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Note: This page contains sample records for the topic "modis moderate 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

High-Spatial-Resolution Surface and Cloud-Type Classification from MODIS Multispectral Band Measurements  

Science Conference Proceedings (OSTI)

A method for automated classification of surface and cloud types using Moderate Resolution Imaging Spectroradiometer (MODIS) radiance measurements has been developed. The MODIS cloud mask is used to define the training sets. Surface and cloud-...

Jun Li; W. Paul Menzel; Zhongdong Yang; Richard A. Frey; Steven A. Ackerman

2003-02-01T23:59:59.000Z

2

Global Percent Tree Cover at a Spatial Resolution of 500 Meters: First Results of the MODIS Vegetation Continuous Fields Algorithm  

Science Conference Proceedings (OSTI)

The first results of the Moderate Resolution Imaging Spectroradiometer (MODIS) vegetation continuous field algorithm's global percent tree cover are presented. Percent tree cover per 500-m MODIS pixel is estimated using a supervised regression ...

M. C. Hansen; R. S. DeFries; J. R. G. Townshend; M. Carroll; C. Dimiceli; R. A. Sohlberg

2003-10-01T23:59:59.000Z

3

Cloud Detection with MODIS. Part II: Validation  

Science Conference Proceedings (OSTI)

An assessment of the performance of the Moderate Resolution Imaging Spectroradiometer (MODIS) cloud mask algorithm for Terra and Aqua satellites is presented. The MODIS cloud mask algorithm output is compared with lidar observations from ground [...

S. A. Ackerman; R. E. Holz; R. Frey; E. W. Eloranta; B. C. Maddux; M. McGill

2008-07-01T23:59:59.000Z

4

AIRS Subpixel Cloud Characterization Using MODIS Cloud Products  

Science Conference Proceedings (OSTI)

The Moderate Resolution Imaging Spectroradiometer (MODIS) and the Atmospheric Infrared Sounder (AIRS) measurements from the Earth Observing System's (EOS's) Aqua satellite enable improved global monitoring of the distribution of clouds. MODIS is ...

Jun Li; W. Paul Menzel; Fengying Sun; Timothy J. Schmit; James Gurka

2004-08-01T23:59:59.000Z

5

Using MODIS to Estimate Cloud Contamination of the AVHRR Data Record  

Science Conference Proceedings (OSTI)

A study of the improvement in cloud-masking capability of data from a Moderate Resolution Imaging Spectroradiometer (MODIS) relative to data from an Advanced Very High Resolution Radiometer (AVHRR) is performed. MODIS offers significant advances ...

Andrew K. Heidinger; Venkata Rao Anne; Charles Dean

2002-05-01T23:59:59.000Z

6

Global ice cloud observations: radiative properties and statistics from moderate-resolution imaging spectroradiometer measurements  

E-Print Network (OSTI)

Ice clouds occur quite frequently, yet so much about these clouds is unknown. In recent years, numerous investigations and field campaigns have been focused on the study of ice clouds, all with the ultimate goal of gaining a better understanding of microphysical and optical properties, as well as determining the radiative impact. Perhaps one of the most recognized instruments used for such research is the Moderate-resolution Imaging Spectroradiometer (MODIS), carried aboard the NASA EOS satellites Terra and Aqua. The present research aims to support ongoing efforts in the field of ice cloud research by use of observations obtained from Terra and Aqua MODIS. First, a technique is developed to infer ice cloud optical depth from the MODIS cirrus reflectance parameter. This technique is based on a previous method developed by Meyer et al. (2004). The applicability of the algorithm is demonstrated with retrievals from level-2 and -3 MODIS data. The technique is also evaluated with the operational MODIS cloud retrieval product and a method based on airborne ice cloud observations. From this technique, an archive of daily optical depth retrievals is constructed. Using simple statistics, the global spatial and temporal distributions of ice clouds are determined. Research has found that Aqua MODIS observes more frequent ice clouds and larger optical depths and ice water paths than does Terra MODIS. Finally, an analysis of the time series of daily optical depth values revealed that ice clouds at high latitudes, which are most likely associated with synoptic scale weather sytems, persist long enough to move with the upper level winds. Tropical ice clouds, however, dissipate more rapidly, and are in all likelihood associated with deep convective cells.

Meyer, Kerry Glynne

2007-08-01T23:59:59.000Z

7

Synergistic Use of MODIS and AIRS in a Variational Retrieval of Cloud Parameters  

Science Conference Proceedings (OSTI)

The Moderate Resolution Imaging Spectroradiometer (MODIS) and the Atmospheric Infrared Sounder (AIRS) measurements from the Earth Observing System's (EOS's) Aqua satellite enable global monitoring of the distribution of clouds. MODIS is able to ...

Jun Li; W. Paul Menzel; Wenjian Zhang; Fengying Sun; Timothy J. Schmit; James J. Gurka; Elisabeth Weisz

2004-11-01T23:59:59.000Z

8

Direct Insertion of MODIS Radiances in a Global Aerosol Transport Model  

Science Conference Proceedings (OSTI)

In this paper results are presented from a simple offline assimilation system that uses radiances from the Moderate Resolution Imaging Spectroradiometer (MODIS) channels that sense atmospheric aerosols over land and ocean. The MODIS information ...

Clark Weaver; Arlindo da Silva; Mian Chin; Paul Ginoux; Oleg Dubovik; Dave Flittner; Aahmad Zia; Lorraine Remer; Brent Holben; Watson Gregg

2007-03-01T23:59:59.000Z

9

Exploration of the MODIS Cloud-Top Property Products for the Investigation of Equatorial Wave Systems  

Science Conference Proceedings (OSTI)

The Moderate Resolution Imaging Spectroradiometer (MODIS) observations provide an unprecedented opportunity for studying cloud macrophysical (cloud-top pressure, temperature, height, and phase), microphysical (effective particle size), and ...

Yue Li; Gerald R. North; Ping Yang; Bryan A. Baum

2010-09-01T23:59:59.000Z

10

Particle Growth and Drop Collection Efficiency of Warm Clouds as Inferred from Joint CloudSat and MODIS Observations  

Science Conference Proceedings (OSTI)

This study describes an approach for combining CloudSat and Moderate Resolution Imaging Spectroradiometer (MODIS) satellite observations to investigate the microphysical processes of warm clouds on the global scale. MODIS column optical thickness ...

Kentaroh Suzuki; Takashi Y. Nakajima; Graeme L. Stephens

2010-09-01T23:59:59.000Z

11

MODIS ASCII Subsets Available  

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

ASCII Subsets Available ASCII Subsets Available The ORNL DAAC announces the availability of subsets from the Moderate Resolution Imaging Spectroradiometer (MODIS) sensor for 274 field sites. These subsetted products, which are in ASCII format for a 7 x 7 km area centered on the field sites, are especially useful for tracking seasonal dynamics. Please see http://www.fluxnet.ornl.gov/fluxnet/modis.cfm for details. Weekly MODIS Land Products from MODIS sensors onboard the Terra and Aqua platforms include the following: -Leaf Area Index and Fraction of Photosynthetically Absorbed Radiation (LAI/fPAR, MOD15A2, MYD15A2), -Normalized Difference Vegetation Index and Enhanced Vegetation Index (NDVI/EVI, MOD13A2, MYD13A2), -Gross Primary Productivity (GPP, MOD17A2, MYD17A2), -Net Primary Productivity (NPP, MOD17A3, MYD17A2),

12

Comparing MODIS and AIRS Infrared-Based Cloud Retrievals  

Science Conference Proceedings (OSTI)

Comparisons are described for infrared-derived cloud products retrieved from the Moderate Resolution Imaging Spectroradiometer (MODIS) and the Atmospheric Infrared Sounder (AIRS) using measured spatial response functions obtained from prelaunch ...

Shaima L. Nasiri; H. Van T. Dang; Brian H. Kahn; Eric J. Fetzer; Evan M. Manning; Mathias M. Schreier; Richard A. Frey

2011-05-01T23:59:59.000Z

13

Retrieval of Cloud Microphysical Properties from MODIS and AIRS  

Science Conference Proceedings (OSTI)

The Moderate Resolution Imaging Spectroradiometer (MODIS) and the Atmospheric Infrared Sounder (AIRS) measurements from the NASA Earth Observing System Aqua satellite enable global monitoring of the distribution of clouds during day and night. ...

Jun Li; Hung-Lung Huang; Chian-Yi Liu; Ping Yang; Timothy J. Schmit; Heli Wei; Elisabeth Weisz; Li Guan; W. Paul Menzel

2005-10-01T23:59:59.000Z

14

Radiance Comparisons of MODIS and AIRS Using Spatial Response Information  

Science Conference Proceedings (OSTI)

The combination of multiple satellite instruments on a pixel-by-pixel basis is a difficult task, even for instruments collocated in space and time, such as the Moderate Resolution Imaging Spectroradiometer (MODIS) and Atmospheric Infrared Sounder ...

M. M. Schreier; B. H. Kahn; A. Eldering; D. A. Elliott; E. Fishbein; F. W. Irion; T. S. Pagano

2010-08-01T23:59:59.000Z

15

Next-Generation MODIS for Polar Operational Environmental Satellites  

Science Conference Proceedings (OSTI)

The Moderate Resolution Imaging Spectroradiometer (MODIS) protoflight model has been delivered to the NASA Earth Observing System AM-1 platform project to provide highly calibrated, near daily, global atmosphere, land, and ocean observation in 36 ...

Carl F. Schueler; William L. Barnes

1998-04-01T23:59:59.000Z

16

MODIS Cloud-Top Property Refinements for Collection 6  

Science Conference Proceedings (OSTI)

This paper summarizes the Collection-6 refinements in the Moderate Resolution Imaging Spectroradiometer (MODIS) operational cloud-top properties algorithm. The focus is on calibration improvements and on cloud macrophysical properties including ...

Bryan A. Baum; W. Paul Menzel; Richard A. Frey; David C. Tobin; Robert E. Holz; Steve A. Ackerman; Andrew K. Heidinger; Ping Yang

2012-06-01T23:59:59.000Z

17

Subsetting Tools Available for New MODIS Land Products (Collection 5)  

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

Subsetting Tools Available for New MODIS Land Products (Collection 5) Subsetting Tools Available for New MODIS Land Products (Collection 5) The ORNL DAAC announces two tools for subsetting land products from the Moderate Resolution Imaging Spectroradiometer (MODIS) sensors onboard the Terra and Aqua satellites. The first tool allows users to obtain MODIS land products for 1,052 selected sites worldwide in ASCII format (7 x 7 km) and in GeoTIFF format (25 x 25 km). To access this tool see http://daac.ornl.gov/modisfixedsite. The global subsetting tool creates MODIS land product subsets for user-selected areas worldwide from one pixel up to 201 x 201 km area and for a user-selected time period during the MODIS record. To access this tool, please see http://daac.ornl.gov/modisglobal. Both tools subset the following MODIS Land Products:

18

Evaluation of a MODIS-Based Potential Evapotranspiration Product at the Point Scale  

Science Conference Proceedings (OSTI)

This paper outlines the development of a continuous, daily time series of potential evapotranspiration (PET) using Moderate Resolution Imaging Spectroradiometer (MODIS) sensor data from the Terra satellite platform. The approach is based on the ...

Jongyoun Kim; Terri S. Hogue

2008-06-01T23:59:59.000Z

19

Assessment of the Quality of MODIS Cloud Products from Radiance Simulations  

Science Conference Proceedings (OSTI)

Observations made by the Moderate Resolution Imaging Spectroradiometer (MODIS), the Atmospheric Infrared Sounder (AIRS), the Cloud–Aerosol Lidar and Infrared Pathfinder Satellite Observation (CALIPSO), and CloudSat are synergistically used to ...

Seung-Hee Ham; Byung-Ju Sohn; Ping Yang; Bryan A. Baum

2009-08-01T23:59:59.000Z

20

MODIS Observations of Ship Tracks in Summertime Stratus off the West Coast of the United States  

Science Conference Proceedings (OSTI)

Three years of 1-km Moderate Resolution Imaging Spectroradiometer (MODIS) observations for morning (Terra) and afternoon (Aqua) summertime marine stratus off the west coast of the United States were analyzed to determine the response of the ...

Matthew S. Segrin; James A. Coakley Jr.; William R. Tahnk

2007-12-01T23:59:59.000Z

Note: This page contains sample records for the topic "modis moderate 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

Comparing Ship-Track Droplet Sizes Inferred from Terra and Aqua MODIS Data  

Science Conference Proceedings (OSTI)

In this study of ship tracks, Moderate Resolution Imaging Spectroradiometer (MODIS) measurements from late-morning (Terra) and early-afternoon (Aqua) Earth Observing System platforms are analyzed in five separate geographically distributed cases ...

Burcu Kabatas; W. Paul Menzel; Ata Bilgili; Liam E. Gumley

2013-01-01T23:59:59.000Z

22

Satellite-Based Imagery Techniques for Daytime Cloud/Snow Delineation from MODIS  

Science Conference Proceedings (OSTI)

This paper presents two multispectral enhancement techniques for distinguishing between regions of cloud and snow cover using optical spectrum passive radiometer satellite observations from the Moderate Resolution Imaging Spectroradiometer (MODIS)...

Steven D. Miller; Thomas F. Lee; Robert L. Fennimore

2005-07-01T23:59:59.000Z

23

Assimilating MODIS and AMSR-E Snow Observations in a Snow Evolution Model  

Science Conference Proceedings (OSTI)

In this paper four simple computationally inexpensive, direct insertion data assimilation schemes are presented, and evaluated, to assimilate Moderate Resolution Imaging Spectroradiometer (MODIS) snow cover, which is a binary observation, and ...

Steven J. Fletcher; Glen E. Liston; Christopher A. Hiemstra; Steven D. Miller

2012-10-01T23:59:59.000Z

24

Multilayer Cloud Detection with the MODIS Near-Infrared Water Vapor Absorption Band  

Science Conference Proceedings (OSTI)

Data Collection 5 processing for the Moderate Resolution Imaging Spectroradiometer (MODIS) on board the NASA Earth Observing System (EOS) Terra and Aqua spacecraft includes an algorithm for detecting multilayered clouds in daytime. The main ...

Galina Wind; Steven Platnick; Michael D. King; Paul A. Hubanks; Michael J. Pavolonis; Andrew K. Heidinger; Ping Yang; Bryan A. Baum

2010-11-01T23:59:59.000Z

25

The Relationship of the Terra MODIS Fire Product and Anthropogenic Features in the Central Siberian Landscape  

Science Conference Proceedings (OSTI)

Fires are a common occurrence in the Siberian boreal forest. The thermal anomalies product of the Terra/Moderate Resolution Imaging Spectroradiometer (MODIS) product suite is designed to detect thermal anomalies (i.e., hotspots or fires) on the ...

Katalin Kovacs; K. Jon Ranson; Guoqing Sun; Vlacheslav I. Kharuk

2004-12-01T23:59:59.000Z

26

Relating Satellite-Observed Cloud Properties from MODIS to Meteorological Conditions for Marine Boundary Layer Clouds  

Science Conference Proceedings (OSTI)

This study examines 6 yr of cloud properties observed by the Moderate Resolution Imaging Spectroradiometer (MODIS) on board the NASA Terra satellite in five prominent marine boundary layer (MBL) cloud regions (California, Peru, Canary, Angola, ...

Guang J. Zhang; Andrew M. Vogelmann; Michael P. Jensen; William D. Collins; Edward P. Luke

2010-03-01T23:59:59.000Z

27

Application of CALIOP Measurements to the Evaluation of Cloud Phase Derived from MODIS Infrared Channels  

Science Conference Proceedings (OSTI)

In this study, Moderate Resolution Imaging Spectroradiometer (MODIS) infrared-based cloud thermodynamic phase retrievals are evaluated using Cloud-Aerosol Lidar with Orthogonal Polarization (CALIOP) retrievals for the 6 months from January to ...

Hyoun-Myoung Cho; Shaima L. Nasiri; Ping Yang

2009-10-01T23:59:59.000Z

28

Updating a Land Surface Model with MODIS-Derived Snow Cover  

Science Conference Proceedings (OSTI)

A simple scheme for updating snow-water storage in a land surface model using snow cover observations is presented. The scheme makes use of snow cover observations retrieved from the Moderate Resolution Imaging Spectroradiometer (MODIS) aboard ...

M. Rodell; P. R. Houser

2004-12-01T23:59:59.000Z

29

Arctic Cloud Characteristics as Derived from MODIS, CALIPSO, and CloudSat  

Science Conference Proceedings (OSTI)

The Moderate Resolution Imaging Spectroradiometer (MODIS), Cloud–Aerosol Lidar with Orthogonal Polarization (CALIOP), and CloudSat Cloud Profiling Radar (CPR) set of sensors, all in the Afternoon Constellation (A-Train), has been regarded as among ...

Mark Aaron Chan; Josefino C. Comiso

2013-05-01T23:59:59.000Z

30

Terrestrial Carbon Sinks for the United States Predicted from MODIS Satellite Data and Ecosystem Modeling  

Science Conference Proceedings (OSTI)

A simulation model based on satellite observations of monthly vegetation cover from the Moderate Resolution Imaging Spectroradiometer (MODIS) was used to estimate monthly carbon fluxes in terrestrial ecosystems of the conterminous United States ...

Christopher Potter; Steven Klooster; Alfredo Huete; Vanessa Genovese

2007-08-01T23:59:59.000Z

31

The MODIS Aerosol Algorithm, Products, and Validation  

Science Conference Proceedings (OSTI)

The Moderate Resolution Imaging Spectroradiometer (MODIS) aboard both NASA’s Terra and Aqua satellites is making near-global daily observations of the earth in a wide spectral range (0.41–15 ?m). These measurements are used to derive spectral ...

L. A. Remer; Y. J. Kaufman; D. Tanré; S. Mattoo; D. A. Chu; J. V. Martins; R.-R. Li; C. Ichoku; R. C. Levy; R. G. Kleidman; T. F. Eck; E. Vermote; B. N. Holben

2005-04-01T23:59:59.000Z

32

SAFARI 2000 MODIS Data Sets Available  

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

Resolution Imaging Spectroradiometer (MODIS) for the SAFARI 2000 project. The data set "SAFARI 2000 MODIS MOD04L2 Aerosol Data, GRANT Format, for Southern Africa" contains...

33

Climate Sensitivity of Moderate- and Low-Resolution Versions of CCSM3 to Preindustrial Forcings  

Science Conference Proceedings (OSTI)

Preindustrial (PI) simulations of the Community Climate System Model version 3 (CCSM3) at two resolutions, a moderate and a low resolution, are described and compared to the standard controls for present-day (PD) simulations. Because of ...

Bette L. Otto-Bliesner; Robert Tomas; Esther C. Brady; Caspar Ammann; Zav Kothavala; Gabriel Clauzet

2006-06-01T23:59:59.000Z

34

MODIS Land Products Subsets  

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

MODIS ASCII Subset Products - FTP Access MODIS ASCII Subset Products - FTP Access All of the MODIS ASCII Subsets are available from the ORNL DAAC's ftp site. The directory structure of the ftp site is based on the abbreviated names for the MODIS Products. Terra MODIS products are abbreviated "MOD", Aqua MODIS products are abbreviated "MYD" and combined Terra and Aqua MODIS products are abbreviated "MCD". The abbreviated names also include the version number (also known as collection). For specific products, please refer to the following table: Product Acronym Spatial Resolution Temporal Frequency Terra V005 SIN Aqua V005 SIN Terra/Aqua Combined V005 SIN Surface Reflectance SREF 500 m 8 day composites MOD09A1 MYD09A1 ---------- Land Surface Temperature and Emissivity TEMP 1 km 8 day composites MOD11A2 MYD11A2 ----------

35

Principal Component Image Analysis of MODIS for Volcanic Ash. Part II: Simulation of Current GOES and GOES-M Imagers  

Science Conference Proceedings (OSTI)

In Part I of this paper the infrared bands of the Moderate Resolution Imaging Spectroradiometer (MODIS) were analyzed using principal component image analysis for volcanic ash signals. The analyses performed determined that several of the thermal ...

Donald W. Hillger; James D. Clark

2002-10-01T23:59:59.000Z

36

Principal Component Image Analysis of MODIS for Volcanic Ash. Part I: Most Important Bands and Implications for Future GOES Imagers  

Science Conference Proceedings (OSTI)

In Part I of this paper, the infrared bands of the Moderate Resolution Imaging Spectroradiometer (MODIS) are analyzed for volcanic ash signals using principal component image analysis. Target volcanoes included Popocatepetl volcano near Mexico ...

Donald W. Hillger; James D. Clark

2002-10-01T23:59:59.000Z

37

Diagnosis of the Warm Rain Process in Cloud-Resolving Models Using Joint CloudSat and MODIS Observations  

Science Conference Proceedings (OSTI)

This study examines the warm rain formation process in global and regional cloud-resolving models. Methodologies developed to analyze CloudSat and Moderate Resolution Imaging Spectroradiometer (MODIS) satellite observations are employed to ...

Kentaroh Suzuki; Graeme L. Stephens; Susan C. van den Heever; Takashi Y. Nakajima

2011-11-01T23:59:59.000Z

38

A Study of the Characteristics and Assimilation of Retrieved MODIS Total Precipitable Water Data in Severe Weather Simulations  

Science Conference Proceedings (OSTI)

This study determined the accuracy and biases associated with retrieved Moderate Resolution Imaging Spectroradiometer (MODIS) total precipitable water (TPW) data, and it investigated the impact of these data on severe weather simulations using ...

Shu-Hua Chen; Zhan Zhao; Jennifer S. Haase; Aidong Chen; Francois Vandenberghe

2008-09-01T23:59:59.000Z

39

Using Air Temperature to Quantitatively Predict the MODIS Fractional Snow Cover Retrieval Errors over the Continental US (CONUS)  

Science Conference Proceedings (OSTI)

Understanding and quantifying satellite-based remotely sensed snow cover uncertainty are critical for its successful utilization. The Moderate Resolution Imaging Spectroradiometer (MODIS) snow cover errors have been previously recognized to be ...

Jiarui Dong; Mike Ek; Dorothy Hall; Christa Peters-Lidard; Brian Cosgrove; Jeff Miller; George Riggs; Youlong Xia

40

New Vegetation Albedo Parameters and Global Fields of Soil Background Albedo Derived from MODIS for Use in a Climate Model  

Science Conference Proceedings (OSTI)

New values are derived for snow-free albedo of five plant functional types (PFTs) and the soil/litter substrate from data acquired by the Moderate Resolution Imaging Spectroradiometer (MODIS) sensors on board Terra and Aqua. The derived albedo ...

Caroline J. Houldcroft; William M. F. Grey; Mike Barnsley; Christopher M. Taylor; Sietse O. Los; Peter R. J. North

2009-02-01T23:59:59.000Z

Note: This page contains sample records for the topic "modis moderate 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

Evaluating Cloud Contamination in Clear-Sky MODIS Terra Daytime Land Surface Temperatures Using Ground-Based Meteorology Station Observations  

Science Conference Proceedings (OSTI)

Environment Canada meteorological station hourly sampled air temperatures Tair at four stations in the southwest Yukon were used to identify cloud contamination in the Moderate Resolution Imaging Spectroradiometer (MODIS) Terra clear-sky daytime ...

Scott N. Williamson; David S. Hik; John A. Gamon; Jeffrey L. Kavanaugh; Saewan Koh

2013-03-01T23:59:59.000Z

42

An Artificial Neural Network model to reduce false alarms in satellite precipitation products using MODIS and CloudSat observations  

Science Conference Proceedings (OSTI)

The Moderate Resolution Imaging Spectro-radiometer (MODIS) instrument aboard the NASA Earth Observing System (EOS) Aqua and Terra platform with 36 spectral bands provides valuable information about cloud microphysical characteristics and therefore ...

Nasrin Nasrollahi; Kuolin Hsu; Soroosh Sorooshian

43

Mountain Wave Signatures in MODIS 6.7-?m Imagery and Their Relation to Pilot Reports of Turbulence  

Science Conference Proceedings (OSTI)

A technique for nowcasting turbulent mountain waves over the Front Range of the state of Colorado is investigated using Moderate Resolution Imaging Spectroradiometer (MODIS) water vapor (6.7 ?m) channel imagery. Pilot reports of turbulence were ...

N. L. Uhlenbrock; K. M. Bedka; W. F. Feltz; S. A. Ackerman

2007-06-01T23:59:59.000Z

44

Model Assessment of the Ability of MODIS to Measure Top-of-Atmosphere Direct Radiative Forcing from Smoke Aerosols  

Science Conference Proceedings (OSTI)

The new generation of satellite sensors such as the moderate resolution imaging spectroradiometer (MODIS) will be able to detect and characterize global aerosols with an unprecedented accuracy. The question remains whether this accuracy will be ...

Lorraine A. Remer; Yoram J. Kaufman; Zev Levin; Steven Ghan

2002-02-01T23:59:59.000Z

45

MODIS-Derived Boundary Conditions for a Mesoscale Climate Model: Application to Irrigated Agriculture in the Euphrates Basin  

Science Conference Proceedings (OSTI)

In arid and semiarid parts of the world, evaporation from irrigated fields may significantly influence humidity, near-surface winds, and precipitation. Using Moderate Resolution Imaging Spectroradiometer (MODIS) Terra imagery from summer and ...

Benjamin F. Zaitchik; Jason Evans; Ronald B. Smith

2005-06-01T23:59:59.000Z

46

A SOAP Web Service for accessing MODIS land product subsets  

Science Conference Proceedings (OSTI)

Remote sensing data from satellites have provided valuable information on the state of the earth for several decades. Since March 2000, the Moderate Resolution Imaging Spectroradiometer (MODIS) sensor on board NASA s Terra and Aqua satellites have been providing estimates of several land parameters useful in understanding earth system processes at global, continental, and regional scales. However, the HDF-EOS file format, specialized software needed to process the HDF-EOS files, data volume, and the high spatial and temporal resolution of MODIS data make it difficult for users wanting to extract small but valuable amounts of information from the MODIS record. To overcome this usability issue, the NASA-funded Distributed Active Archive Center (DAAC) for Biogeochemical Dynamics at Oak Ridge National Laboratory (ORNL) developed a Web service that provides subsets of MODIS land products using Simple Object Access Protocol (SOAP). The ORNL DAAC MODIS subsetting Web service is a unique way of serving satellite data that exploits a fairly established and popular Internet protocol to allow users access to massive amounts of remote sensing data. The Web service provides MODIS land product subsets up to 201 x 201 km in a non-proprietary comma delimited text file format. Users can programmatically query the Web service to extract MODIS land parameters for real time data integration into models, decision support tools or connect to workflow software. Information regarding the MODIS SOAP subsetting Web service is available on the World Wide Web (WWW) at http://daac.ornl.gov/modiswebservice.

SanthanaVannan, Suresh K [ORNL; Cook, Robert B [ORNL; Pan, Jerry Yun [ORNL; Wilson, Bruce E [ORNL

2011-01-01T23:59:59.000Z

47

On the Annual Cycle, Variability, and Correlations of Oceanic Low-Topped Clouds with Large-Scale Circulation Using Aqua MODIS and ERA-Interim  

Science Conference Proceedings (OSTI)

Eight years of Aqua Moderate Resolution Imaging Spectroradiometer (MODIS) level-3 cloud data in conjunction with collocated Interim ECMWF Re-Analysis are used to investigate relationships between isolated low-topped cloud fraction (LCF) and ...

Terence L. Kubar; Duane E. Waliser; J.-L. Li; Xianan Jiang

2012-09-01T23:59:59.000Z

48

A Study of Air Quality in the Southeastern Hampton–Norfolk–Virginia Beach Region with Airborne Lidar Measurements and MODIS Aerosol Optical Depth Retrievals  

Science Conference Proceedings (OSTI)

A study of air quality was performed using a compact, aircraft aerosol lidar designed in the Science Directorate at NASA Langley Research Center and Moderate Resolution Imaging Spectroradiometer (MODIS) aerosol optical depth (AOD) retrievals. ...

Jasper Lewis; Russell De Young; D. Allen Chu

2010-01-01T23:59:59.000Z

49

Evaluation of MODIS gross primary productivity and land cover products for the humid tropics using oil palm trees in Peninsular Malaysia and Google Earth imagery  

Science Conference Proceedings (OSTI)

Conducting quantitative studies on the carbon balance or productivity of oil palm is important in understanding the role of this ecosystem in global climate change. In this study, we evaluated the accuracy of MODIS Moderate Resolution Imaging Spectroradiometer ...

Arthur Philip Cracknell, Kasturi Devi Kanniah, Kian Pang Tan, Lei Wang

2013-10-01T23:59:59.000Z

50

MODIS Calibration: A Brief Review of the Strategy for the At-Launch Calibration Approach  

Science Conference Proceedings (OSTI)

The Moderate-Resolution Imaging Spectroradiometer (MODIS) is a key instrument on the NASA Earth Observing System. It is a multispectral sensor that will be used to track long-term global change in the land, atmosphere, and ocean components of the ...

B. Guenther; W. Barnes; E. Knight; J. Barker; J. Harnden; R. Weber; M. Roberto; G. Godden; H. Montgomery; P. Abel

1996-04-01T23:59:59.000Z

51

Observations of SO2 production and transport from Bezymianny volcano, Kamchatka using the MODerate resolution Infrared Spectroradiometer (MODIS)  

Science Conference Proceedings (OSTI)

Bezymianny volcano, Kamchatka Peninsula, Russia, is one of the most active volcanoes in the North Pacific (NOPAC) region and erupts violently on average every 6 months. We report the SO2 cloud mass, emission and transport rates for the eruption of Bezymianny ...

C. S. Kearney; K. Dean; V. J. Realmuto; I. M. Watson; J. Dehn; F. Prata

2008-11-01T23:59:59.000Z

52

MODIS Land Products Subsets  

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

ORNL DAAC MODIS Land Product Subsets MODIS Collection 5 Global Subsetting and Visualization Tool Create subset for user selected site, area, product, and time period. Data for...

53

MODIS Land Product Subsets  

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

Validation > MODIS Land Subsets Validation > MODIS Land Subsets MODIS Land Product Subsets Overview Earth, Western Hemisphere The goal of the MODIS Land Product Subsets project is to provide summaries of selected MODIS Land Products for the community to use for validation of models and remote-sensing products and to characterize field sites. Output files contain pixel values of MODIS land products in text format and in GeoTIFF format. In addition, data visualizations (time series plots and grids showing single composite periods) are available. MODIS Land Product Subsets Resources The following MODIS Land Product Subsets resources are maintained by the ORNL DAAC: MODIS Land Products Offered Background Citation Policy Methods and formats MODIS Sinusoidal Grid - Google Earth KMZ Classroom Exercises

54

MODTRAN: a moderate resolution model for LOWTRAN. Technical report, 12 May 1986-11 May 1987  

SciTech Connect

This interim technical report describes a new band-model formulation for the LOWTRAN 6 atmospheric transmittance/radiation computer code. Band-model parameters for H/sub 2/O, CO/sub 2/, O/sub 3/, CO, CH/sub 4/, O/sub 2/, and N/sub 2/ were calculated using the 1986 HITRAN line atlas. They were calculated for 1 /cm bins from 0 - 17,900/cm and at five temperatures from 200 to 300K. This transmittance model and associated subroutines were integrated into LOWTRAN 6. The spectral resolution of this new option is better than 5/cm (FWHM). A preliminary version of the code was delivered to AFGL for testing. Validation against FASCOD2 calculations will be the emphasis for the remainder of this effort.

Berk, A.; Bernstein, L.S.; Robertson, D.C.

1987-07-08T23:59:59.000Z

55

MODIS Land Products Subsets  

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

Data for Selected Field Sites (n=1147) Data for Selected Field Sites (n=1147) Obtain MODIS data for areas centered on selected field sites or flux towers from around the world. The goal of the MODIS Subsets for Selected Field Sites is to prepare summaries of selected MODIS Land Products for the community to use for validation of models and remote sensing products and to characterize field sites. Search for data: By Site from a Map Server from Google Earth (Install Google Earth) From FTP site (ASCII) Methods Data products were first subsetted from one or more 1200x1200-km MODIS tiles to 25 x 25-km arrays by the MODIS Science Data Support Team (MODAPS). These products were further subsetted (7x7) and reformatted from their native HDF-EOS to ASCII using version 2.2 of the MODIS Reprojection Tool (MRT) in combination with code developed at the ORNL DAAC.

56

MODIS Land Products Subsets  

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

Citation When using subsets of MODIS Land Products from the ORNL DAAC, please use the citation: Oak Ridge National Laboratory Distributed Active Archive Center (ORNL DAAC). 2011....

57

Retrieval of Cloud Phase Using the Moderate Resolution Imaging Spectroradiometer Data during the Mixed-Phase Arctic Cloud Experiment  

SciTech Connect

Improving climate model predictions over Earth's polar regions requires a comprehensive knowledge of polar cloud microphysics. Over the Arctic, there is minimal contrast between the clouds and background snow surface, making it difficult to detect clouds and retrieve their phase from space. Snow and ice cover, temperature inversions, and the predominance of mixed-phase clouds make it even more difficult to determine cloud phase. Also, since determining cloud phase is the first step toward analyzing cloud optical depth, particle size, and water content, it is vital that the phase be correct in order to obtain accurate microphysical and bulk properties. Changes in these cloud properties will, in turn, affect the Arctic climate since clouds are expected to play a critical role in the sea ice albedo feedback. In this paper, the IR trispectral technique (IRTST) is used as a starting point for a WV and 11-{micro}m brightness temperature (T11) parameterization (WVT11P) of cloud phase using MODIS data. In addition to its ability to detect mixed-phase clouds, the WVT11P also has the capability to identify thin cirrus clouds overlying mixed or liquid phase clouds (multiphase ice). Results from the Atmospheric Radiation Measurement (ARM) MODIS phase model (AMPHM) are compared to the surface-based cloud phase retrievals over the ARM North Slope of Alaska (NSA) Barrow site and to in-situ data taken from University of North Dakota Citation (CIT) aircraft which flew during the Mixed-Phase Arctic Cloud Experiment (MPACE). It will be shown that the IRTST and WVT11P combined to form the AMPHM can achieve a relative high accuracy of phase discrimination compared to the surface-based retrievals. Since it only uses MODIS WV and IR channels, the AMPHM is robust in the sense that it can be applied to daytime, twilight, and nighttime scenes with no discontinuities in the output phase.

Spangenberg, D.; Minnis, P.; Shupe, M.; Uttal, T.; Poellot, M.

2005-03-18T23:59:59.000Z

58

MODIS Land Products Subsets  

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

Introduction Introduction Collection 5 The MODIS data from the Terra and Aqua satellites are being reprocessed using revised algorithms beginning in September 2006. This new set of MODIS Products is called Collection 5. To view the product changes that took place in going from Collection 4 to Collection 5, please visit the following Web site: http://landweb.nascom.nasa.gov/cgi-bin/QA_WWW/newPage.cgi?fileName=MODLAND_C005_changes The ORNL DAAC provides subsets of the Collection 5 MODIS Land Products. Investigators from around the world have shown a great deal of interest in this activity, asking that over 1000 field and flux tower sites be included in Collection 5 subsetting (up from 280 sites for Collection 4 MODIS subsetting). Availability of the Collection 5 Data Products

59

MODIS Land Products Subsets  

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

Geography of the MODIS Land Subsets for selected Field Sites Geography of the MODIS Land Subsets for selected Field Sites The 7- x 7-km grid containing the field or tower site is provided to enable comparison of pixel values of MODIS products with field data collected at a site. The values are intended to be examined over time either as a collection of individual values or combined (e.g., the average and range) within a 3- x 3-km grid or a 5- x 5-km grid around the site. Examples of analyses using the ASCII subset data can be found in presentations. If users would like to examine the MODIS data spatially in a map, we suggest that they obtain the GeoTIFF subsets or MODIS products from the LP DAAC. Please note that the grid and pixel sizes are not exact multiples of 1 km, but are only approximations. For instance, the grid and pixel size for the 1 km Sinusoidal grid is approximately 926 m. For additional information, please view the MODIS Web site.

60

MODIS Land Products Subsets  

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

Presentations Presentations Web and Web Services based tool that provides Subsets and Visualization of MODIS land products to facilitate land validation and field site characterization. S.K. Santhana Vannan; R. B. Cook; B. E. Wilson. AGU Fall Meeting, San Francisco, CA, December 14-18 2009 MODIS Land Product Subsets,S.K. Santhana Vannan; R. B. Cook. November, 2009 MODIS Web Service, S.K. Santhana Vannan. ORNL DAAC UWG Meeting, May 2009 Subsetting Tools for MODIS Land Products: Time-series data for field sites, R. B. Cook, S. M. Margle, S. K. Santhana Vannan, S. K. Holladay, and T. W. Beaty. Global Vegetation Workshop, Missoula MT, August 8-10, 2006 MODIS ASCII Subsets, R. B. Cook. May 2006 Subsets of Remote Sensing Products for AmeriFlux Sites: MODIS ASCII Subsets, AmeriFlux Annual Meeting, R. B. Cook, S. M. Margle, S. K. Holladay, F. A. Heinsch, and C. B. Schaaf. October 5-7, 2004, Boulder, Colorado

Note: This page contains sample records for the topic "modis moderate 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

MODIS Land Products Subsets  

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

Introduction Introduction The goal of the MODIS Land Product Subsets project is to provide summaries of selected MODIS Land Products for the community to use for validation of models and remote-sensing products, and to characterize field sites. The MODIS Land Product Subsets are derived from MODIS products that were generated with Collection 4 or later algorithms. Please be advised that these products are subject to continual review and revision. The MODIS land product subsets are provided in ASCII and GeoTIFF format. The subsets are stored as individual text(ASCII) files, each file represents one field site and one MODIS product.The ASCII data covers 7x7 km of the field site. These ASCII files contain comma-delimited rows of parameter values (image bands) for each pixel in the selected area. Each row in the file will contain data from one 8-day, 16-day, or annual period (depending on the temporal frequency of the data product represented).

62

Retrieval of Ice Cloud Properties from AIRS and MODIS Observations Based on a Fast High-Spectral-Resolution Radiative Transfer Model  

Science Conference Proceedings (OSTI)

A computationally efficient high-spectral-resolution cloudy-sky radiative transfer model (HRTM) in the thermal infrared region (700–1300 cm?1, 0.1 cm?1 spectral resolution) is advanced for simulating the upwelling radiance at the top of atmosphere ...

Chenxi Wang; Ping Yang; Steven Platnick; Andrew K. Heidinger; Bryan A. Baum; Thomas Greenwald; Zhibo Zhang; Robert E. Holz

2013-03-01T23:59:59.000Z

63

MODIS Land Products Subsets  

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

Use of MODIS Subsetting Tool in the Classroom Use of MODIS Subsetting Tool in the Classroom Please contact the professors before using their exercises in your class. If you create a new classroom exercise or script that utlize the ORNL DAAC MODIS subsetting tools please consider contributing to the list. Hongjie Xie Associate Professor Director of Remote Sensing and Geoinformatics Lab Department of Geological Sciences University of Texas at San Antonio Hongjie.Xie@utsa.edu http://www.utsa.edu/LRSG/ Lab Exercise 1 Lab Exercise 2 David Roy Senior Scientist, Professor of Geography Geographic Information Science Center of Excellence South Dakota State University david.roy@sdstate.edu http://globalmonitoring.sdstate.edu/faculty/roy/roy.html Lab Exercise James T. Randerson Professor Department of Earth System Science

64

SAFARI 2000 MODIS Airborne Simulator Data  

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

Airborne Simulator Data Airborne Simulator Data The ORNL DAAC announces the release of a new SAFARI 2000 data set. The data set "SAFARI 2000 MODIS Airborne Simulator Data, Southern Africa, Dry Season 2000" contains MODIS Airborne Simulator (MAS) multispectral data collected during the SAFARI 2000 project. Twenty flights with the MAS instrument were undertaken over Southern Africa by the NASA ER-2 aircraft during August and September 2000. The MAS spectrometer collects 50 multispectral bands at 16-bit resolution with a ground resolution of 50 meters from 20,000 meters altitude and a cross track scan width of 85.92 degrees. This data set is organized by flight, and each flight consists of several straight-line segments called tracks. There is a MAS multispectral data file for each track. The data are available in Hierarchical Data Format

65

MODIS Land Products Subsets  

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

methods methods This section describes methods used to generate MODIS Land Subsets for Collection 4 and Collection 5 data products. Methods for Selected Sites (Collections 4 and 5) Methods for North America Tool (Collection 4) Methods for the Global Tool (Collection 5) Methods for Selected Sites (Collection 4 and 5) Source for Selected Site Data: Full MODIS scenes (1200-km x 1200-km) are initially subset to 11-km x 31-km (Collection 4) or 25-km x 25-km (Collection 5) by the MODAPS; these initial subsets contain the field site or flux tower. Reformatting and additional subsetting to 7-km x 7-km containing the field site or flux tower are done by the ORNL DAAC. Tools Used: The ORNL DAAC uses the MODIS Reprojection Tool (MRT) to reformat the MODIS data from HDF-EOS to binary format. A tool developed at ORNL is then used to convert the binary format to ASCII. The MRT is available from the Land Processes DAAC. Whereas the MRT can also be used to reproject data from its native projection to other projections, ORNL chose to forgo the resampling associated with reprojection to minimize data manipulation and distortion. The MOD12Q1 Land Cover Collection 3 data are in I-Sin projection, and the Collection 4 and Collection 5 data are in Sinusoidal projection.

66

MODIS Land Products Subsets  

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

Method Used to Calculate Albedo from the MODIS Albedo Model Parameter Product MCD43A1 Method Used to Calculate Albedo from the MODIS Albedo Model Parameter Product MCD43A1 Albedo MCD43A The ALBEDO data are based on the Terra and Aqua(Combined) MODIS BRDF / Albedo Model Parameter Product (MCD43A1). The primary BRDF model parameters from MCD43A1 are used in the following equations to calculate Black-sky, white-sky, and actual (blue-sky) albedo. We have used a solar zenith angle (szn) equal to local solar noon and an optical depth of 0.2 as default values in calculating these data files. Black-sky Albedo = Parameters_01 + Parameters_02 * (-0.007574 + (-0.070987 * szn2) + (0.307588 * szn3)) + Parameters_03 * (-1.284909 + (-0.166314 * szn2) + (0.041840 * szn3)) White-sky Albedo = Parameters_01 + Parameters_02 * (0.189184) + Parameters_03 * (-1.377622)

67

MODIS Land Products Subsets Web Service  

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

Web Service The MODIS Web service provides users with subsets of MODIS Land Products through standards based SOAP (Simple Object Access Protocol) Web service. Through the Web...

68

MODIS Land Products Subsets  

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

Global Subsetting and Visualization Tool Global Subsetting and Visualization Tool The Global Subsetting and Visualization Tool provides customized subsets of MODIS Land products in ASCII format on demand for any location on Earth. Users select a site (either from a picklist or by entering the site's geographic coordinates) and the area surrounding that site, from one pixel up to 201 x 201 km. The tool is expected to take up to 60 minutes to complete the processing, and the tool will send you an email message containing the URL where you can access the output. The tool provides time series plots of the measurement, an ASCII file of the pixel values for the selected product along with quality information, average and standard deviations for the area selected, and a file that can be imported directly into GIS software. In addition we provide a land cover grid (IGBP classification) of the area, along with an estimate of heterogeneity (Shannon richness and evenness).

69

Estimation of Net Ecosystem Carbon Exchange for the Conterminous UnitedStates by Combining MODIS and AmeriFlux Data  

Science Conference Proceedings (OSTI)

Eddy covariance flux towers provide continuous measurements of net ecosystem carbon exchange (NEE) for a wide range of climate and biome types. However, these measurements only represent the carbon fluxes at the scale of the tower footprint. To quantify the net exchange of carbon dioxide between the terrestrial biosphere and the atmosphere for regions or continents, flux tower measurements need to be extrapolated to these large areas. Here we used remotely-sensed data from the Moderate Resolution Imaging Spectrometer (MODIS) instrument on board NASA's Terra satellite to scale up AmeriFlux NEE measurements to the continental scale. We first combined MODIS and AmeriFlux data for representative U.S. ecosystems to develop a predictive NEE model using a regression tree approach. The predictive model was trained and validated using NEE data over the periods 2000-2004 and 2005-2006, respectively. We found that the model predicted NEE reasonably well at the site level. We then applied the model to the continental scale and estimated NEE for each 1 km x 1 km cell across the conterminous U.S. for each 8-day period in 2005 using spatially-explicit MODIS data. The model generally captured the expected spatial and seasonal patterns of NEE. Our study demonstrated that our empirical approach is effective for scaling up eddy flux NEE measurements to the continental scale and producing wall-to-wall NEE estimates across multiple biomes. Our estimates may provide an independent dataset from simulations with biogeochemical models and inverse modeling approaches for examining the spatiotemporal patterns of NEE and constraining terrestrial carbon budgets for large areas.

Xiao, Jingfeng; Zhuang, Qianlai; Baldocchi, Dennis D.; Law, Beverly E.; Richardson, Andrew D.; Chen, Jiquan; Oren, Ram; Starr, Gregory; Noormets, Asko; Ma, Siyan; Verma, Shashi B.; Wharton, Sonia; Wofsy, Steven C.; Bolstad, Paul V.; Burns, Sean P.; Cook, David R.; Curtis, Peter S.; Drake, Bert G.; Falk, Matthias; Fischer, Marc L.; Foster, David R.; Gu, Lianhong; Hadley, Julian L.; Hollinger, David Y.; Katul, Gabriel G.; Litvak, Marcy; Martin, Timothy A.; Matamala, Roser; McNulty, Steve; Meyers, Tilden P.; Monson, Russell K.; Munger, J. William; Oechel, Walter C.; U, Kyaw Tha Paw; Schmid, Hans Peter; Scott, Russell L.; Sun, Ge; Suyker, Andrew E.; Torn, Margaret S.

2009-03-06T23:59:59.000Z

70

Estimation of net ecosystem carbon exchange for the conterminous United States by combining MODIS and AmeriFlux data  

Science Conference Proceedings (OSTI)

Eddy covariance flux towers provide continuous measurements of net ecosystem carbon exchange (NEE) for a wide range of climate and biome types. However, these measurements only represent the carbon fluxes at the scale of the tower footprint. To quantify the net exchange of carbon dioxide between the terrestrial biosphere and the atmosphere for regions or continents, flux tower measurements need to be extrapolated to these large areas. Here we used remotely sensed data from the Moderate Resolution Imaging Spectrometer (MODIS) instrument on board the National Aeronautics and Space Administration's (NASA) Terra satellite to scale up AmeriFlux NEE measurements to the continental scale. We first combined MODIS and AmeriFlux data for representative U.S. ecosystems to develop a predictive NEE model using a modified regression tree approach. The predictive model was trained and validated using eddy flux NEE data over the periods 2000-2004 and 2005-2006, respectively. We found that the model predicted NEE well (r = 0.73, p < 0.001). We then applied the model to the continental scale and estimated NEE for each 1 km x 1 km cell across the conterminous U.S. for each 8-day interval in 2005 using spatially explicit MODIS data. The model generally captured the expected spatial and seasonal patterns of NEE as determined from measurements and the literature. Our study demonstrated that our empirical approach is effective for scaling up eddy flux NEE measurements to the continental scale and producing wall-to-wall NEE estimates across multiple biomes. Our estimates may provide an independent dataset from simulations with biogeochemical models and inverse modeling approaches for examining the spatiotemporal patterns of NEE and constraining terrestrial carbon budgets over large areas.

Xiao, Jingfeng; Zhuang, Qianlai; Baldocchi, Dennis D.; Bolstad, Paul V.; Burns, Sean P.; Chen, Jiquan; Cook, David R.; Curtis, Peter S.; Drake, Bert G.; Foster, David R.; Gu, Lianhong; Hadley, Julian L.; Hollinger, David Y.; Katul, Gabriel G.; Law, Beverly E.; Litvak, Marcy; Ma, Siyan; Martin, Timothy A.; Matamala, Roser; McNulty, Steve; Meyers, Tilden P.; Monson, Russell K.; Munger, J. William; Noormets, Asko; Oechel, Walter C.; Oren, Ram; Richardson, Andrew D.; Schmid, Hans Peter; Scott, Russell L.; Starr, Gregory; Sun, Ge; Suyker, Andrew E.; Torn, Margaret S.; Paw, Kyaw; Verma, Shashi B.; Wharton, Sonia; Wofsy, Steven C.

2008-10-01T23:59:59.000Z

71

Techniques for Using MODIS Data to Remotely Sense Lake Water Surface Temperatures  

Science Conference Proceedings (OSTI)

This study describes a step-wise methodology used to provide daily, high spatial-resolution water surface temperatures from MODIS satellite data for use in a near-real-time system for the Great Salt Lake (GSL). Land surface temperature (LST) is ...

Joseph A. Grim; Jason C. Knievel; Erik T. Crosman

72

Strong Links Between Teleconnections and Ecosystem Exchange Found at a Pacific Northwest Old-Growth Forest from Flux Tower and MODIS EVI Data  

SciTech Connect

Variability in three Pacific teleconnection patterns are examined to see if net carbon exchange at a low-elevation, old-growth forest is affected by climatic changes associated with these periodicities. Examined are the Pacific Decadal Oscillation (PDO), Pacific/North American Oscillation (PNA) and El Nino-Southern Oscillation (ENSO). We use nine years of eddy covariance CO{sub 2}, H{sub 2}O and energy fluxes measured at the Wind River AmeriFlux site, Washington, USA and eight years of tower-pixel remote sensing data from the Moderate Resolution Imaging Spectroradiometer (MODIS) to address this question. We compute a new Composite Climate Index (CCI) based on the three Pacific Oscillations to divide the measurement period into positive- (2003 and 2005), negative- (1999 and 2000) and neutral-phase climate years (2001, 2002, 2004, 2006 and 2007). The forest transitioned from an annual net carbon sink (NEP = + 217 g C m{sup -2} year{sup -1}, 1999) to a source (NEP = - 100 g C m{sup -2} year{sup -1}, 2003) during two dominant teleconnection patterns. Net ecosystem productivity (NEP), water use efficiency (WUE) and light use efficiency (LUE) were significantly different (P < 0.01) during positive (NEP = -0.27 g C m{sup -2} day{sup -1}, WUE = 4.1 mg C/g H{sub 2}O, LUE = 0.94 g C MJ{sup -1}) and negative (NEP = +0.37 g C m{sup -2} day{sup -1}, WUE = 3.4 mg C/g H{sub 2}O, LUE = 0.83 g C MJ{sup -1}) climate phases. The CCI was linked to variability in the MODIS Enhanced Vegetation Index (EVI) but not to MODIS Fraction of absorbed Photosynthetically Active Radiation (FPAR). EVI was highest during negative climate phases (1999 and 2000) and was positively correlated with NEP and showed potential for using MODIS to estimate teleconnection-driven anomalies in ecosystem CO{sub 2} exchange in old-growth forests. This work suggests that any increase in the strength or frequency of ENSO coinciding with in-phase, low frequency Pacific oscillations (PDO and PNA) will likely increase CO{sub 2} uptake variability in Pacific Northwest conifer forests.

Wharton, S; Chasmer, L; Falk, M; Paw U, K T

2009-03-12T23:59:59.000Z

73

Collection 4 MODIS Land Product Subsets will be decommissioned...  

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

4 MODIS Land Product Subsets will be decommissioned on January 31, 2009 The ORNL NASA DAAC will discontinue the distribution of Collection 4 MODIS Land Product Subsets on January...

74

The Plane-Parallel Albedo Bias of Liquid Clouds from MODIS Observations  

Science Conference Proceedings (OSTI)

The authors present the global plane-parallel shortwave albedo bias of liquid clouds for two months, July 2003 and January 2004. The cloud optical properties necessary to perform the bias calculations come from the operational Moderate Resolution ...

Lazaros Oreopoulos; Robert F. Cahalan; Steven Platnick

2007-10-01T23:59:59.000Z

75

Assessment of Aerosol Modes Used in the MODIS Ocean Aerosol Retrieval  

Science Conference Proceedings (OSTI)

Coastal and island Aerosol Robotic Network (AERONET) sites are used to determine characteristic aerosol modes over marine environments. They are compared with the assumed modes used in the operational Moderate Resolution Imaging Spectroradiometer (...

Jiacheng Wang; Qiang Zhao; Shengcheng Cui; Chengjie Zhu

2012-12-01T23:59:59.000Z

76

Evaluating Satellite-Based Cloud Persistence and Displacement Nowcasting Techniques over Complex Terrain  

Science Conference Proceedings (OSTI)

The Moderate Resolution Imaging Spectroradiometer (MODIS) sensor aboard the Terra and Aqua satellites allows roughly for the same region of Earth to be sampled twice in a nowcasting time frame. Using the MODIS cloud mask at 5-km resolution and ...

Eric M. Guillot; Thomas H. Vonder Haar; John M. Forsythe; Steven J. Fletcher

2012-04-01T23:59:59.000Z

77

FLUID MODERATED REACTOR  

DOE Patents (OSTI)

A reactor which utilizes fissionable fuel elements in rod form immersed in a moderator or heavy water and a means of circulating the heavy water so that it may also function as a coolant to remove the heat generated by the fission of the fuel are described. In this design, the clad fuel elements are held in vertical tubes immersed in heavy water in a tank. The water is circulated in a closed system by entering near the tops of the tubes, passing downward through the tubes over the fuel elements and out into the tank, where it is drawn off at the bottom, passed through heat exchangers to give up its heat and then returned to the tops of the tubes for recirculation.

Wigner, E.P.; Ohlinger, L.A.; Young, G.J.; Weinberg, A.M.

1957-10-22T23:59:59.000Z

78

Moderate Temperature | Open Energy Information  

Open Energy Info (EERE)

Moderate Temperature Moderate Temperature Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Print PDF Sanyal Temperature Classification: Moderate Temperature Dictionary.png Moderate Temperature: No definition has been provided for this term. Add a Definition Sanyal Temp Classification This temperature scheme was developed by Sanyal in 2005 at the request of DOE and GEA, as reported in Classification of Geothermal Systems: A Possible Scheme. Extremely Low Temperature Very Low Temperature Low Temperature Moderate Temperature High Temperature Ultra High Temperature Steam Field Reservoir fluid between 190°C and 230°C is considered by Sanyal to be "moderate temperature." "The next higher resource temperature limit is chosen as 230°C, which is lower than the minimum initial resource temperature encountered in

79

Variations in Subpixel Fire Properties with Season and Land Cover in Southern Africa  

Science Conference Proceedings (OSTI)

Some of the most widely used datasets for monitoring the world’s fires come from the Moderate Resolution Imaging Spectroradiometer (MODIS) sensors aboard NASA’s Terra and Aqua satellites. For virtually all remote sensing systems, including MODIS, ...

Ted C. Eckmann; Christopher J. Still; Dar A. Roberts; Joel C. Michaelsen

2010-06-01T23:59:59.000Z

80

Use of Remotely Sensed Actual Evapotranspiration to Improve Rainfall–Runoff Modeling in Southeast Australia  

Science Conference Proceedings (OSTI)

This paper explores the use of the Moderate Resolution Imaging Spectroradiometer (MODIS), mounted on the polar-orbiting Terra satellite, to determine leaf area index (LAI), and use actual evapotranspiration estimated using MODIS LAI data combined ...

Yongqiang Zhang; Francis H. S. Chiew; Lu Zhang; Hongxia Li

2009-08-01T23:59:59.000Z

Note: This page contains sample records for the topic "modis moderate 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

Moderator materials and neutronic performance  

SciTech Connect

The great variety of instruments proposed for LANSCE-II entails an equally varied set of requirements for the target stations moderators. Besides the obvious features such as intensity and pulse width of the neutron pulse, a number of more pragmatic questions have to be addressed such as fast neutron background and energy deposition in the moderators, especially at large proton beam powers such as the 1 MW proton beam power proposed for LANSCE-II.

Daemen, L.L.; Russell, G.J.; Pitcher, E.J.; Lujan, M. Jr.

1993-12-31T23:59:59.000Z

82

Estimating The Effect of Biofuel on Land Cover Change Using Multi-Year Modis Land Cover Data  

SciTech Connect

There has been a growing debate on the effects of the increase in demands of biofuels on land use land cover (LULC) change with apprehension in some quarters that the growing demand for bioenergy as a clean fuel will result in widespread direct and indirect LULC change. However estimating both direct and indirect LULC change is challenging and will require development of accurate high frequency, high resolution (temporal and spatial) land use land cover data as well as new LULC models which can be used to locate, quantify and predict these changes. To assess whether the demand for biofuel has caused significant LULC we used MODIS land cover data (MCD12Q1) from 2001 to 2008 along with cropland data layer (CDL) to estimate cropland and grassland changes in United States for the years 2002-2008 as well as its correlation with biofuel growth.

Singh, Nagendra [ORNL; Bhaduri, Budhendra L [ORNL

2010-01-01T23:59:59.000Z

83

Moderated ruthenium fischer-tropsch synthesis catalyst  

DOE Patents (OSTI)

The subject Fischer-Tropsch catalyst comprises moderated ruthenium on an inorganic oxide support. The preferred moderator is silicon. Preferably the moderator is effectively positioned in relationship to ruthenium particles through simultaneous placement on the support using reverse micelle impregnation.

Abrevaya, Hayim (Wilmette, IL)

1991-01-01T23:59:59.000Z

84

Comparison of CALIPSO-Like, LaRC, and MODIS Retrievals of Ice-Cloud Properties over SIRTA in France and Florida during CRYSTAL-FACE  

Science Conference Proceedings (OSTI)

This study compares cirrus-cloud properties and, in particular, particle effective radius retrieved by a Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observation (CALIPSO)-like method with two similar methods using Moderate-Resolution ...

M. Chiriaco; H. Chepfer; P. Minnis; M. Haeffelin; S. Platnick; D. Baumgardner; P. Dubuisson; M. McGill; V. Noël; J. Pelon; D. Spangenberg; S. Sun-Mack; G. Wind

2007-03-01T23:59:59.000Z

85

Impact of the Aqua MODIS band 6 Restoration on Cloud/Snow Discrimination  

Science Conference Proceedings (OSTI)

Distinguishing between clouds and snow is an intrinsically challenging problem because both have similar high albedo across many bands. The 1.6?m channel (band 6) on the MODIS instrument provides an essential tool for distinguishing clouds from ...

Irina Gladkova; Fazlul Shahriar; Michael Grossberg; Richard A. Frey; W. Paul Menzel

86

HEAVY WATER MODERATED NEUTRONIC REACTOR  

DOE Patents (OSTI)

A nuclear reactor of the type which utilizes uranium fuel elements and a liquid coolant is described. The fuel elements are in the form of elongated tubes and are disposed within outer tubes extending through a tank containing heavy water, which acts as a moderator. The ends of the fuel tubes are connected by inlet and discharge headers, and liquid bismuth is circulated between the headers and through the fuel tubes for cooling. Helium is circulated through the annular space between the outer tubes in the tank and the fuel tubes to cool the water moderator to prevent boiling. The fuel tubes are covered with a steel lining, and suitable control means, heat exchange means, and pumping means for the coolants are provided to complete the reactor assembly.

Szilard, L.

1958-04-29T23:59:59.000Z

87

Nighttime Multilayered Cloud Detection Using MODIS and ARM Data  

Science Conference Proceedings (OSTI)

This study reports on recent progress toward the discrimination between pixels containing multilayered clouds, specifically optically thin cirrus overlying lower-level water clouds, and those containing single-layered clouds in nighttime Moderate ...

Bryan A. Baum; Richard A. Frey; Gerald G. Mace; Monica K. Harkey; Ping Yang

2003-07-01T23:59:59.000Z

88

LIGHT WATER MODERATED NEUTRONIC REACTOR  

DOE Patents (OSTI)

A uranium fuel reactor designed to utilize light water as a moderator is described. The reactor core is in a tank at the bottom of a substantially cylindrical cross-section pit, the core being supported by an apertured grid member and comprised of hexagonal tubes each containing a pluralily of fuel rods held in a geometrical arrangement between end caps of the tubes. The end caps are apertured to permit passage of the coolant water through the tubes and the fuel elements are aluminum clad to prevent corrosion. The tubes are hexagonally arranged in the center of the tank providing an amulus between the core and tank wall which is filled with water to serve as a reflector. In use, the entire pit and tank are filled with water in which is circulated during operation by coming in at the bottom of the tank, passing upwardly through the grid member and fuel tubes and carried off near the top of the pit, thereby picking up the heat generated by the fuel elements during the fission thereof. With this particular design the light water coolant can also be used as the moderator when the uranium is enriched by fissionable isotope to an abundance of U/sup 235/ between 0.78% and 2%.

Christy, R.F.; Weinberg, A.M.

1957-09-17T23:59:59.000Z

89

Cold moderators for pulsed neutron sources  

SciTech Connect

This paper reviews cold moderators in pulsed neutron sources and provides details of the performance of different cold moderator materials and configurations. Analytical forms are presented which describe wavelength spectra and emission time distributions. Several types of cooling arrangements used in pulsed source moderators are described. Choices of materials are surveyed. The author examines some of the radiation damage effects in cold moderators, including the phenomenon of burping'' in irradiated cold solid methane. 9 refs., 15 figs., 4 tabs.

Carpenter, J.M.

1990-01-01T23:59:59.000Z

90

Some concluding remarks about cold moderator development  

DOE Green Energy (OSTI)

This paper is the transcription of remarks made at the conclusion of the Workshop on Cold Neutron Sources held at the Los Angeles National Laboratory, Los Alamos, New Mexico, March 5--7, 1990. Areas of interest include the following: scattering functions; cold moderator materials; radiation mixing of chemical composition; comparison of some pulsed moderator spectra; hydrogen mixtures; premoderators and shields; composite reflectors; exotic moderator materials; deuterated methanes; mixed moderator materials; and test facility availabilities. 2 refs., 4 figs., 1 tab. (MHB)

Carpenter, J.M.

1990-01-01T23:59:59.000Z

91

MODERATOR ELEMENTS FOR UNIFORM POWER NUCLEAR REACTOR  

DOE Patents (OSTI)

This patent describes a method of obtaining a flatter flux and more uniform power generation across the core of a nuclear reactor. The method comprises using moderator elements having differing moderating strength. The elements have an increasing amount of the better moderating material as a function of radial and/or axial distance from the reactor core center. (AEC)

Balent, R.

1963-03-12T23:59:59.000Z

92

Estimating forest biomass in the USA using generalized allometric models and MODIS land products  

E-Print Network (OSTI)

Estimating forest biomass in the USA using generalized allometric models and MODIS land products 2006; published 11 May 2006. [1] Spatially-distributed forest biomass components are essential to understand carbon cycle and the impact of biomass burning emissions on air quality. We estimated the density

Kuligowski, Bob

93

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;

94

Moderators - Instrument Support | ORNL Neutron Sciences  

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

Moderators Moderators Detailed design of scattering instruments requires detailed knowledge of the neutron beam emitted from the moderator in question. We are currently providing moderator performance estimates based on the result of detailed Monte Carlo simulations of the entire target system. These simulations are being performed for both the High Power Target Station (HPTS) and the Long Wavelength Target Station (LWTS), and have been performed for the Intense Pulsed Neutron Source (IPNS) in the same manner. We make the IPNS source files available as a means to benchmark instrument simulation codes. These files follow a particular "source file format" which will adapt to the changing needs of instrument simulation as necessary. We also provide worked examples showing how to use the information in the source files

95

Understanding the AIRS, ARM, and MODIS cloud products by cross-comparison  

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

Understanding the AIRS, ARM, and MODIS cloud products by cross-comparison Understanding the AIRS, ARM, and MODIS cloud products by cross-comparison Kahn, Brian Jet Propulsion Laboratory Eldering, Annmarie Jet Propulsion Laboratory Category: Cloud Properties We present comparisons of the Atmospheric Infrared Sounder (AIRS) operational cloud top height (CTH) to the active surface-based measurements of the Atmospheric Radiation Measurement (ARM) program sites in the tropical Western Pacific. The agreement is found to be consistent to other comparisons of passive IR-derived CTH from other measurement platforms despite the nominal footprint size of 45 km at nadir view. Independent comparisons of CTH to the millimeter-wave cloud radar at Manus Island and the micropulse lidar at Nauru Island indicate that the CTH retrieved by AIRS is statistically significant at the 5% level or less for cirrus cases

96

Inventory Mistakes and the Great Moderation  

E-Print Network (OSTI)

Why did the volatility of U.S. real GDP decline by more than the volatility of final sales with the Great Moderation in the mid-1980s? One possible explanation is that firms shifted their inventory behaviour towards a greater emphasis on production smoothing. In this paper, we investigate the role of inventories in the Great Moderation by estimating an unobserved components model that identifies inventory and sales shocks and their propagation. We find only mixed evidence of increased production smoothing. Instead, it was a reduction in inventory mistakes that accounts for the excess volatility reduction in output relative to sales. The inventory mistakes are informational errors related to production that must be set in advance and their reduction also helps to explain the changed forecasting role of inventories since the mid-1980s. Our findings provide an optimistic prognosis for the continuation of the Great Moderation.

James Morley; Aarti Singh

2009-01-01T23:59:59.000Z

97

Acquisition Conflict Resolution  

Acquisition Conflict Resolution At the option of the Supplier, a concern may be brought to the Ombuds Office or may be taken to the Internal Conflict Resolution Process

98

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

99

Cold-moderator scattering kernel methods  

SciTech Connect

An accurate representation of the scattering of neutrons by the materials used to build cold sources at neutron scattering facilities is important for the initial design and optimization of a cold source, and for the analysis of experimental results obtained using the cold source. In practice, this requires a good representation of the physics of scattering from the material, a method to convert this into observable quantities (such as scattering cross sections), and a method to use the results in a neutron transport code (such as the MCNP Monte Carlo code). At Los Alamos, the authors have been developing these capabilities over the last ten years. The final set of cold-moderator evaluations, together with evaluations for conventional moderator materials, was released in 1994. These materials have been processed into MCNP data files using the NJOY Nuclear Data Processing System. Over the course of this work, they were able to develop a new module for NJOY called LEAPR based on the LEAP + ADDELT code from the UK as modified by D.J. Picton for cold-moderator calculations. Much of the physics for methane came from Picton`s work. The liquid hydrogen work was originally based on a code using the Young-Koppel approach that went through a number of hands in Europe (including Rolf Neef and Guy Robert). It was generalized and extended for LEAPR, and depends strongly on work by Keinert and Sax of the University of Stuttgart. Thus, their collection of cold-moderator scattering kernels is truly an international effort, and they are glad to be able to return the enhanced evaluations and processing techniques to the international community. In this paper, they give sections on the major cold moderator materials (namely, solid methane, liquid methane, and liquid hydrogen) using each section to introduce the relevant physics for that material and to show typical results.

MacFarlane, R.E.

1998-08-01T23:59:59.000Z

100

A Decade of the Moderate Resolution Imaging Spectroradiometer: Is a Solar–Cloud Link Detectable?  

Science Conference Proceedings (OSTI)

Based on the results of decadal correlation studies between the International Satellite Cloud Climatology Project–detected cloud anomalies and the galactic cosmic ray (GCR) flux, it has been suggested that a relationship exists between solar ...

Benjamin Laken; Enric Pallé; Hiroko Miyahara

2012-07-01T23:59:59.000Z

Note: This page contains sample records for the topic "modis moderate 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

An Observational and Modeling Study of Characteristics of Urban Heat Island and Boundary Layer Structures in Beijing  

Science Conference Proceedings (OSTI)

In this paper, the characteristics of urban heat island (UHI) and boundary layer structures in the Beijing area, China, are analyzed using conventional and Moderate Resolution Imaging Spectroradiometer (MODIS) observations. The Weather Research ...

Shiguang Miao; Fei Chen; Margaret A. LeMone; Mukul Tewari; Qingchun Li; Yingchun Wang

2009-03-01T23:59:59.000Z

102

Seasonal Variations of the Urban Heat Island at the Surface and the Near-Surface and Reductions due to Urban Vegetation in Mexico City  

Science Conference Proceedings (OSTI)

The contrast of vegetation cover in urban and surrounding areas modulates the magnitude of the urban heat island (UHI). This paper examines the seasonal variations of the UHI using the Moderate Resolution Imaging Spectroradiometer (MODIS), surface ...

Yu Yan Cui; Benjamin de Foy

2012-05-01T23:59:59.000Z

103

Multi-Instrument Comparison of Top-of-Atmosphere Reflected Solar Radiation  

Science Conference Proceedings (OSTI)

Observations from the Clouds and the Earth’s Radiant Energy System (CERES), Moderate Resolution Imaging Spectroradiometer (MODIS), Multiangle Imaging Spectroradiometer (MISR), and Sea-Viewing Wide-Field-of-View Sensor (SeaWiFS) between 2000 and ...

Norman G. Loeb; Bruce A. Wielicki; Wenying Su; Konstantin Loukachine; Wenbo Sun; Takmeng Wong; Kory J. Priestley; Grant Matthews; Walter F. Miller; R. Davies

2007-02-01T23:59:59.000Z

104

Why Is Remote Sensing of Amazon Forest Greenness So Challenging?  

Science Conference Proceedings (OSTI)

The prevalence of clouds and aerosols and their impact on satellite-measured greenness levels of forests in southern and central Amazonia are explored in this article using 10 years of NASA Moderate Resolution Imaging Spectroradiometer (MODIS) ...

Arindam Samanta; Sangram Ganguly; Eric Vermote; Ramakrishna R. Nemani; Ranga B. Myneni

2012-06-01T23:59:59.000Z

105

Integrating Remote Sensing Data with WRF for Improved Simulations of Oasis Effects on Local Weather Processes over an Arid Region in Northwestern China  

Science Conference Proceedings (OSTI)

Land use/cover types derived by satellite remote sensing data from the Earth Observing System Moderate Resolution Imaging Spectroradiometer (MODIS) were used to replace the U.S. Geological Survey (USGS) data in the Weather Research and Forecasting ...

Xiaohang Wen; Shihua Lu; Jiming Jin

2012-04-01T23:59:59.000Z

106

Boundary Layer and Cloud Structure Controls on Tropical Low Cloud Cover Using A-Train Satellite Data and ECMWF Analyses  

Science Conference Proceedings (OSTI)

The Cloud–Aerosol Lidar and Infrared Pathfinder Satellite Observations (CALIPSO), CloudSat radar, and the Moderate Resolution Imaging Spectroradiometer (MODIS) cloud data on the A-Train constellation complemented with the European Centre for ...

Terence L. Kubar; Duane E. Waliser; J-L. Li

2011-01-01T23:59:59.000Z

107

Saharan Dust Aerosol Radiative Forcing Measured from Space  

Science Conference Proceedings (OSTI)

This study uses data collected from the Clouds and the Earth's Radiant Energy System (CERES) and the Moderate Resolution Imaging Spectroradiometer (MODIS) instruments to determine Saharan dust broadband shortwave aerosol radiative forcing over ...

F. Li; A. M. Vogelmann; V. Ramanathan

2004-07-01T23:59:59.000Z

108

Biogeography of Tropical Montane Cloud Forests. Part I: Remote Sensing of Cloud-Base Heights  

Science Conference Proceedings (OSTI)

Cloud-base heights over tropical montane cloud forests are determined using Moderate Resolution Imaging Spectroradiometer (MODIS) cloud products and National Centers for Environmental Prediction global tropospheric final analysis (FNL) fields. ...

Ronald M. Welch; Salvi Asefi; Jian Zeng; Udaysankar S. Nair; Qingyuan Han; Robert O. Lawton; Deepak K. Ray; Vani Starry Manoharan

2008-04-01T23:59:59.000Z

109

A Satellite-Derived Climate-Quality Data Record of the Clear-Sky Surface Temperature of the Greenland Ice Sheet  

Science Conference Proceedings (OSTI)

The authors have developed a climate-quality data record of the clear-sky surface temperature of the Greenland Ice Sheet using the Moderate-Resolution Imaging Spectroradiometer (MODIS) ice-surface temperature (IST) algorithm. Daily and monthly ...

Dorothy K. Hall; Josefino C. Comiso; Nicolo E. DiGirolamo; Christopher A. Shuman; Jeffrey R. Key; Lora S. Koenig

2012-07-01T23:59:59.000Z

110

Estimation of the North–South Transect of Eastern China forest biomass using remote sensing and forest inventory data  

Science Conference Proceedings (OSTI)

The assessment of forest biomass is required for the estimation of carbon sinks and a myriad other ecological and environmental factors. In this article, we combined satellite data Thematic Mapper TM and Moderate Resolution Imaging Spectrometer MODIS, ...

Yanhua Gao, Xinxin Liu, Chengcheng Min, Honglin He, Guirui Yu, Min Liu, Xudong Zhu, Qiao Wang

2013-08-01T23:59:59.000Z

111

Retrieval of Cirrus Microphysical Properties with a Suite of Algorithms for Airborne and Spaceborne Lidar, Radar, and Radiometer Data  

Science Conference Proceedings (OSTI)

Algorithms are developed to convert data streams from multiple airborne and spaceborne remote sensors into layer-averaged cirrus bulk microphysical properties. Radiometers such as the Moderate-Resolution Imaging Spectroradiometer (MODIS) observe ...

Yuying Zhang; Gerald G. Mace

2006-12-01T23:59:59.000Z

112

Boundary Layer Depth, Entrainment, and Decoupling in the Cloud-Capped Subtropical and Tropical Marine Boundary Layer  

Science Conference Proceedings (OSTI)

Estimates of marine boundary layer (MBL) depth and degree of decoupling for two regions of the subtropical and tropical east Pacific are presented using satellite observations from the Moderate Resolution Imaging Spectroradiometer (MODIS) and the ...

Robert Wood; Christopher S. Bretherton

2004-09-01T23:59:59.000Z

113

Test of the Fixed Anvil Temperature Hypothesis  

Science Conference Proceedings (OSTI)

The fixed anvil temperature (FAT) hypothesis is examined based on the Aqua Moderate Resolution Imaging Spectroradiometer (MODIS)-based cloud-top temperature (CTT) in conjunction with the tropical atmospheric profiles and sea surface temperature (...

Yue Li; Ping Yang; Gerald R. North; Andrew Dessler

2012-07-01T23:59:59.000Z

114

A decadal satellite analysis of the origins and impacts of smoke in Colorado  

E-Print Network (OSTI)

We analyze the record of aerosol optical depth (AOD) measured by the MODerate resolution Imaging Spectroradiometer (MODIS) aboard the Terra satellite in combination with surface PM[subscript 2.5] to investigate the impact ...

Val Martin, M.

115

Spatial Variability of Liquid Water Path in Marine Low Cloud: The Importance of Mesoscale Cellular Convection  

Science Conference Proceedings (OSTI)

Liquid water path (LWP) mesoscale spatial variability in marine low cloud over the eastern subtropical oceans is examined using two months of daytime retrievals from the Moderate Resolution Imaging Spectroradiometer (MODIS) on the NASA Terra ...

Robert Wood; Dennis L. Hartmann

2006-05-01T23:59:59.000Z

116

Terrestrial Vegetation Dynamics and Global Climate Controls in North America: 2001–05  

Science Conference Proceedings (OSTI)

Monthly composite data from the Moderate Resolution Imaging Spectroradiometer (MODIS) satellite sensor was used to reconstruct vegetation dynamics in response to climate patterns over the period 2001–05 for North America. Results imply that plant ...

Christopher Potter; Shyam Boriah; Michael Steinbach; Vipin Kumar; Steven Klooster

2008-07-01T23:59:59.000Z

117

Time Series of Daily Averaged Cloud Fractions over Landfast First-Year Sea Ice from Multiple Data Sources  

Science Conference Proceedings (OSTI)

The time series of daily averaged cloud fractions (CFs) collected from different platforms—two Moderate Resolution Imaging Spectroradiometer (MODIS) instruments on Terra and Aqua satellites, the National Centers for Environmental Prediction (NCEP)...

Xin Jin; John M. Hanesiak; David G. Barber

2007-11-01T23:59:59.000Z

118

Droplet Growth in Warm Water Clouds Observed by the A-Train. Part II: A Multisensor View  

Science Conference Proceedings (OSTI)

Hydrometeor droplet growth processes are inferred from a combination of Aqua/Moderate Resolution Imaging Spectroradiometer (MODIS) cloud particle size observations and CloudSat/Cloud Profiling Radar (CPR) observations of warm water clouds. This ...

Takashi Y. Nakajima; Kentaroh Suzuki; Graeme L. Stephens

2010-06-01T23:59:59.000Z

119

Radiative and Convective Driving of Tropical High Clouds  

Science Conference Proceedings (OSTI)

Using satellite cloud data from the Aqua Moderate Resolution Imaging Spectroradiometer (MODIS) and collocated precipitation rates from the Advanced Microwave Scanning Radiometer (AMSR), it is shown that rain rate is closely related to the amount ...

Terence L. Kubar; Dennis L. Hartmann; Robert Wood

2007-11-01T23:59:59.000Z

120

AN ORGANIC MODERATED REACTOR FOR PROCESS HEAT  

SciTech Connect

A review is given of the potentialities of an organic moderated reactor for the supply of heat to factories having a large demand for low-pressure steam, together with a requirement for power produced by back-pressure turbine generation. By choosing a suitable steam cycle it is possible to cover the range of typical power demand/head load ratios found in the chemical industry. The economic developments of a reactor installed for such a duty are briefly considered to show the reductions in operating cost that might be brought about during the operating lifetlme of the reactor and its associated plant. (auth)

Baines, B.D.; Conway-Jones, J.M.

1962-02-01T23:59:59.000Z

Note: This page contains sample records for the topic "modis moderate 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

Optimally moderated nuclear fission reactor and fuel source therefor  

DOE Patents (OSTI)

An improved nuclear fission reactor of the continuous fueling type involves determining an asymptotic equilibrium state for the nuclear fission reactor and providing the reactor with a moderator-to-fuel ratio that is optimally moderated for the asymptotic equilibrium state of the nuclear fission reactor; the fuel-to-moderator ratio allowing the nuclear fission reactor to be substantially continuously operated in an optimally moderated state.

Ougouag, Abderrafi M. (Idaho Falls, ID); Terry, William K. (Shelley, ID); Gougar, Hans D. (Idaho Falls, ID)

2008-07-22T23:59:59.000Z

122

Fischer-Tropsch synthesis process employing a moderated ruthenium catalyst  

DOE Patents (OSTI)

A Fischer-Tropsch type process produces hydrocarbons from carbon monoxide and hydrogen using a novel catalyst comprising moderated ruthenium on an inorganic oxide support. The preferred moderator is silicon. Preferably the moderator is effectively positioned in relationship to ruthenium particles through simultaneous placement on the support using reverse micelle impregnation. 1 fig.

Abrevaya, H.

1990-07-31T23:59:59.000Z

123

Fischer-Tropsch synthesis process employing a moderated ruthenium catalyst  

DOE Green Energy (OSTI)

A Fischer-Tropsch type process produces hydrocarbons from carbon monoxide and hydrogen using a novel catalyst comprising moderated ruthenium on an inorganic oxide support. The preferred moderator is silicon. Preferably the moderator is effectively positioned in relationship to ruthenium particles through simultaneous placement on the support using reverse micelle impregnation.

Abrevaya, Hayim (Wilmette, IL)

1990-01-01T23:59:59.000Z

124

Derivation of Seasonal Cloud Properties at ARM-NSA from Multispectral MODIS Data  

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

Derivation of Seasonal Cloud Properties at ARM-NSA Derivation of Seasonal Cloud Properties at ARM-NSA from Multispectral MODIS Data D. A. Spangenberg Analytical Services and Materials, Inc. Hampton, Virginia P. Minnis National Aeronautics and Space Administration Langley Research Center Hampton, Virginia T. Uttal National Oceanic and Atmospheric Administration Environmental Technology Laboratory Boulder, Colorado Q. Z. Trepte and S. S.-Mack Science Applications International Corporation Hampton, Virginia Introduction Improving climate model predictions over earth's Polar Regions requires a complete knowledge of polar cloud microphysics. Over the Arctic, there is minimal contrast between the clouds and background snow surface observed in satellite data, especially for visible wavelengths. This makes it difficult to

125

Acquisition Conflict Resolution  

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

a fair process that maximizes the opportunity for resolution. The Ombuds Office does not conduct official investigations. Note: Contacting the Ombuds Office does not automatically...

126

Space bounds for resolution  

Science Conference Proceedings (OSTI)

We introduce a new way to measure the space needed in a resolution refutation of a CNF formula in propositional logic. With the former definition [6] the space required for the resolution of any unsatisfiable formula in CNF is linear in the number of ...

Juan Luis Esteban; Jacobo Torán

1999-03-01T23:59:59.000Z

127

Validation of MODIS-Retrieved Cloud Fractions Using Whole Sky Imager Measurements at the Three ARM Sites  

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

MODIS-Retrieved Cloud Fractions Using MODIS-Retrieved Cloud Fractions Using Whole Sky Imager Measurements at the Three ARM Sites Z. Li, M. C. Cribb, and F.-L. Chang Earth System Science Interdisciplinary Center University of Maryland College Park, Maryland A. P. Trishchenko Canada Centre for Remote Sensing Ottawa, Ontario, Canada Introduction Given the importance of clouds in modulating the surface energy budget, it is critical to obtain accurate estimates of their fractional amount in the atmospheric column for use in modeling studies. Satellite remote sensing of cloud properties such as cloud amount has the advantage of providing global coverage on a regular basis. Ground-based surveys of cloud fraction offer a practical database for use in determining the accuracy of these remotely sensed estimates of cloud fraction on a regional scale.

128

Preferred methods of analysis for chemical tracers in moderate...  

Open Energy Info (EERE)

Preferred methods of analysis for chemical tracers in moderate- and high-temperature geothermal environments Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Report:...

129

Improving the Health & Performance of Miners Working at Moderate ...  

Science Conference Proceedings (OSTI)

Cross Pollination between Industry and Engineering Programs/Students in Manitoba · Improving the Health & Performance of Miners Working at Moderate to

130

In pursuit of moderation: nine common errors and teir solutions  

Science Conference Proceedings (OSTI)

One result of the increasing sophistication and complexity of MIS theory and research is the number of studies hypothesizing and testing for moderation effects. A review of the MIS and broader management literatures suggests researchers investigating ... Keywords: PLS, contingency models, tests of moderation

Traci A. Carte; Craig J. Russell

2003-09-01T23:59:59.000Z

131

NWX-NOAA USEC & ADMIN OFFICES Moderator: Linda Belton  

E-Print Network (OSTI)

NWX-NOAA USEC & ADMIN OFFICES Moderator: Linda Belton 08-13-13/2:00 pm CT Confirmation # 1496113-NOAA USEC & ADMIN OFFICES Moderator: Linda Belton August 13, 2013 2:00 pm CT Coordinator: Welcome and thank with the Department of Commerce. Administrative NOAA has assigned NOAA's Office of Legislative #12;NWX-NOAA USEC

132

Development of High Resolution Land Surface Parameters for the Community Land Model  

SciTech Connect

There is a growing need for high-resolution land surface parameters as land surface models are being applied at increasingly higher spatial resolution offline as well as in regional and global models. The default land surface parameters for the most recent version of the Community Land Model (i.e. CLM 4.0) are at 0.5° or coarser resolutions, released with the Community Earth System Model (CESM). Plant Functional Types (PFTs), vegetation properties such as Leaf Area Index (LAI), Stem Area Index (SAI), and non-vegetated land covers were developed using remotely sensed datasets retrieved in late 1990’s and the beginning of this century. In this study, we developed new land surface parameters for CLM 4.0, specifically PFTs, LAI, SAI and non-vegetated land cover composition, at 0.05° resolution globally based on the most recent MODIS land cover and improved MODIS LAI products. Compared to the current CLM 4.0 parameters, the new parameters produced a decreased coverage by bare soil and trees, but an increased coverage by shrub, grass, and cropland. The new parameters result in a decrease in global seasonal LAI, with the biggest decrease in boreal forests; however, the new parameters also show a large increase in LAI in tropical forest. Differences between the new and the current parameters are mainly caused by changes in the sources of remotely sensed data and the representation of land cover in the source data. Advantages and disadvantages of each dataset were discussed in order to provide guidance on the use of the data. The new high-resolution land surface parameters have been used in a coupled land-atmosphere model (WRF-CLM) applied to the western U.S. to demonstrate their use in high-resolution modeling. A remapping method from the latitude/longitude grid of the CLM data to the WRF grids with map projection was also demonstrated. Future work will include global offline CLM simulations to examine the impacts of source data resolution and subsequent land parameter changes on simulated land surface processes.

Ke, Yinghai; Leung, Lai-Yung R.; Huang, Maoyi; Coleman, Andre M.; Li, Hongyi; Wigmosta, Mark S.

2012-11-06T23:59:59.000Z

133

Laboratory Measurements of Spontaneous Oscillations for Moderate-Size Raindrops  

Science Conference Proceedings (OSTI)

The natural oscillations of moderate-size raindrops were studied in a seven-story fall column using a computer-controlled generator to produce isolated water drops at terminal speed. Instantaneous shapes were photographed to obtain oscillation ...

Rodney J. Kubesh; Kenneth V. Beard

1993-04-01T23:59:59.000Z

134

CONVERSION RATIOS IN SLIGHTLY ENRICHED URANIUM, WATER MODERATED LATTICES  

SciTech Connect

An experiment is described in which the conversion ratios were measured using highly enriched U-Al foils as catchers. Data are included on the ratios of epi-cadmium to sub-cadmium fission rates of U/sup 235/ in l% enriched U light water moderated lattices, and on conversion ratios of 1% enriched U light water moderated lattices. (J.R.D.)

Tassan, S.

1963-10-31T23:59:59.000Z

135

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 is disclosed. 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. 12 figs.

Perez-Mendez, V.

1992-12-15T23:59:59.000Z

136

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. 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.

1992-12-31T23:59:59.000Z

137

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

138

High resolution telescope  

DOE Patents (OSTI)

A large effective-aperture, low-cost optical telescope with diffraction-limited resolution enables ground-based observation of near-earth space objects. The telescope has a non-redundant, thinned-aperture array in a center-mount, single-structure space frame. It employs speckle interferometric imaging to achieve diffraction-limited resolution. The signal-to-noise ratio problem is mitigated by moving the wavelength of operation to the near-IR, and the image is sensed by a Silicon CCD. The steerable, single-structure array presents a constant pupil. The center-mount, radar-like mount enables low-earth orbit space objects to be tracked as well as increases stiffness of the space frame. In the preferred embodiment, the array has elemental telescopes with subaperture of 2.1m in a circle-of-nine configuration. The telescope array has an effective aperture of 12m which provides a diffraction-limited resolution of 0.02 arc seconds. Pathlength matching of the telescope array is maintained by an electro-optical system employing laser metrology. Speckle imaging relaxes pathlength matching tolerance by one order of magnitude as compared to phased arrays. Many features of the telescope contribute to substantial reduction in costs. These include eliminating the conventional protective dome and reducing on-site construction activities. The cost of the telescope scales with the first power of the aperture rather than its third power as in conventional telescopes. 9 figs., 1 tab.

Massie, N.A.; Oster, Y.

1990-01-01T23:59:59.000Z

139

High resolution telescope  

DOE Patents (OSTI)

A large effective-aperture, low-cost optical telescope with diffraction-limited resolution enables ground-based observation of near-earth space objects. The telescope has a non-redundant, thinned-aperture array in a center-mount, single-structure space frame. It employs speckle interferometric imaging to achieve diffraction-limited resolution. The signal-to-noise ratio problem is mitigated by moving the wavelength of operation to the near-IR, and the image is sensed by a Silicon CCD. The steerable, single-structure array presents a constant pupil. The center-mount, radar-like mount enables low-earth orbit space objects to be tracked as well as increases stiffness of the space frame. In the preferred embodiment, the array has elemental telescopes with subaperture of 2.1 m in a circle-of-nine configuration. The telescope array has an effective aperture of 12 m which provides a diffraction-limited resolution of 0.02 arc seconds. Pathlength matching of the telescope array is maintained by an electro-optical system employing laser metrology. Speckle imaging relaxes pathlength matching tolerance by one order of magnitude as compared to phased arrays. Many features of the telescope contribute to substantial reduction in costs. These include eliminating the conventional protective dome and reducing on-site construction activites. The cost of the telescope scales with the first power of the aperture rather than its third power as in conventional telescopes.

Massie, Norbert A. (San Ramon, CA); Oster, Yale (Danville, CA)

1992-01-01T23:59:59.000Z

140

High resolution telescope  

DOE Patents (OSTI)

A large effective-aperture, low-cost optical telescope with diffraction-limited resolution enables ground-based observation of near-earth space objects. The telescope has a non-redundant, thinned-aperture array in a center-mount, single-structure space frame. It employs speckle interferometric imaging to achieve diffraction-limited resolution. The signal-to-noise ratio problem is mitigated by moving the wavelength of operation to the near-IR, and the image is sensed by a Silicon CCD. The steerable, single-structure array presents a constant pupil. The center-mount, radar-like mount enables low-earth orbit space objects to be tracked as well as increases stiffness of the space frame. In the preferred embodiment, the array has elemental telescopes with subaperture of 2.1m in a circle-of-nine configuration. The telescope array has an effective aperture of 12m which provides a diffraction-limited resolution of 0.02 arc seconds. Pathlength matching of the telescope array is maintained by an electro-optical system employing laser metrology. Speckle imaging relaxes pathlength matching tolerance by one order of magnitude as compared to phased arrays. Many features of the telescope contribute to substantial reduction in costs. These include eliminating the conventional protective dome and reducing on-site construction activities. The cost of the telescope scales with the first power of the aperture rather than its third power as in conventional telescopes. 9 figs., 1 tab.

Massie, N.A.; Oster, Y.

1990-12-31T23:59:59.000Z

Note: This page contains sample records for the topic "modis moderate 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.
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to obtain the most current and comprehensive results.


141

NACP Data Set Released  

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

is pleased to announce the release of a data set associated is pleased to announce the release of a data set associated with The North American Carbon Program (NACP): NACP: MODIS Daily Land Incident 4-km PAR Images for North America, 2003-2005 . Data set prepared by S. Liang and D. Wang. This data set contains daily Moderate Resolution Imaging Spectroradiometer (MODIS) land incident photosynthetically active radiation (PAR) Images over North America for the years 2003 - 2005. The daily images were derived by integrating MODIS/Terra and MODIS/Aqua instantaneous PAR data where the instantaneous PAR data is estimated directly from Terra or Aqua MODIS 5-min L1b swath data (Liang et al., 2006 and Wang et al., 2010). The spatial distribution of this data set includes the MODIS tile subsets covering North America, Central America, portions of South America, and

142

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

143

Preferred methods of analysis for chemical tracers in moderate- and  

Open Energy Info (EERE)

Preferred methods of analysis for chemical tracers in moderate- and Preferred methods of analysis for chemical tracers in moderate- and high-temperature geothermal environments Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Report: Preferred methods of analysis for chemical tracers in moderate- and high-temperature geothermal environments Details Activities (2) Areas (2) Regions (0) Abstract: This report describes the sampling and analytical techniques used for tracer analysis in the Raft River and East Mesa field tests. The collection procedures and sample preservation techniques, analytical methods and possible sources of contamination or error are discussed in detail. Author(s): Kroneman, R. L.; Yorgason, K. R.; Moore, J. N. Published: DOE Information Bridge, 12/1/1984 Document Number: Unavailable DOI: 10.2172/5121460

144

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

145

Mixing in a Moderately Sheared Salt-Fingering Layer  

Science Conference Proceedings (OSTI)

Mixing due to sheared salt fingers is studied by means of direct numerical simulations (DNS) of a double-diffusively unstable shear layer. The focus is on the “moderate shear” case, where shear is strong enough to produce Kelvin–Helmholtz (KH) ...

W. D. Smyth; S. Kimura

2011-07-01T23:59:59.000Z

146

NWX-NOAA-USEC & ADMIN OFFICES Moderator: Linda Belton  

E-Print Network (OSTI)

NWX-NOAA-USEC & ADMIN OFFICES Moderator: Linda Belton 07-17-13/2:00 pm CT Confirmation #1496093 for Government-to-Government Consultation with Federally Recognized Indian Tribes and Alaska Natives." NWX-NOAA-USEC and Intergovernmental Affairs, and most recently I've been appointed NOAA's Tribal Liaison. #12;NWX-NOAA-USEC & ADMIN

147

Detecting and Evaluating the Effect of Overlaying Thin Cirrus Cloud on MODIS Retrieved Water-Cloud Droplet Effective Radius  

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

Detecting and Evaluating the Effect Detecting and Evaluating the Effect of Overlaying Thin Cirrus Cloud on MODIS Retrieved Water-Cloud Droplet Effective Radius F.-L Chang and Z. Li Earth System Science Interdisciplinary Center University of Maryland College Park, Maryland Z. Li Department of Meteorology University of Maryland College Park, Maryland Introduction Cirrus clouds can largely modify the solar reflected and terrestrial emitted radiances. The ubiquitous presence of cirrus clouds has a global coverage of about 20% to30% and more than 70% in the tropics (Wylie et al. 1994). The probability of cirrus clouds overlaying a low-level boundary layer cloud system is greater than 50% (Hahn et al. 1982, 1984; Tian and Curry 1989; Mace et al. 1997). They are often optically thin and semitransparent and frequently reside in high altitude overlapping with a low-level

148

Cloud Microphysical and Radiative Properties Derived from MODIS, VIRS, AVHRR, and GMS Data Over the Tropical Western Pacific  

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

Microphysical and Radiative Properties Derived Microphysical and Radiative Properties Derived from MODIS, VIRS, AVHRR, and GMS Data Over the Tropical Western Pacific G. D. Nowicki, M. L. Nordeen, P. W. Heck, D. R. Doelling, and M. M. Khaiyer Analytical Services and Materials, Inc. Hampton, Virginia P. Minnis National Aeronautics and Space Administration Atmospheric Sciences Division Langley Research Center Hampton, Virginia S. Sun-Mack Science Applications International Corporation Hampton, Virginia Introduction Utilization of the geostationary meteorological satellite (GMS) imagery has allowed for the derivation of cloud and radiative properties over the Tropical Western Pacific (TWP) on relatively high spatial and temporal scales. The layered bispectral threshold method (LBTM) has been applied to GMS data

149

Characterization and space/time downscaling of the inundation extent over the Inner Niger Delta using GIEMS and MODIS data  

Science Conference Proceedings (OSTI)

Our objective is to develop downscaling methodologies to obtain long time record of inundation extent at high spatial resolution, based on the existing low spatial resolution results of the Global Inundation Extent from Multi-Satellite dataset. In ...

Filipe Aires; Fabrice Papa; Catherine Prigent; Jean-François Crétaux; Muriel Berge-Nguyen

150

Unstructured grid and unstructured grid porous methods for numerical analysis of TACR moderator calandria  

Science Conference Proceedings (OSTI)

In the design of the Thorium-based Advanced CANDU Reactor (TACR), the moderator system is used to remove the moderator heat in normal operations and to remove the residual heat in accidents. The numerical methods to analyze the heat transfer in the moderator ... Keywords: CANDU, Moderator calandria, Porous method, Thorium, Unstructured grid

Jue Yang; Baoshan Jia

2008-05-01T23:59:59.000Z

151

Innovative Graphite Removal Technology for Graphite Moderated Reactor Decommissioning  

Science Conference Proceedings (OSTI)

This report defines a trial program to support the development of a new concept for the removal of reactor graphite by remote in-situ size reduction and vacuum transfer, known as nibble-and-vacuum. This new approach to graphite retrieval has significant potential for simplifying the decommissioning process of graphite moderated reactors. It produces graphite gravel, which has potential as feedstock for processes such as gasification/steam reforming. This report includes definition of the trial program, t...

2010-09-28T23:59:59.000Z

152

Apparent resolution enhancement for animations  

Science Conference Proceedings (OSTI)

Presenting the variety of high resolution images captured by high-quality devices, or generated on the computer, is challenging due to the limited resolution of current display devices. Our recent work addressed this problem by taking into account human ... Keywords: eye tracking, image reconstruction, perception

Krzysztof Templin; Piotr Didyk; Tobias Ritschel; Elmar Eisemann; Karol Myszkowski; Hans-Peter Seidel

2011-04-01T23:59:59.000Z

153

Resolution-enhanced photometric stereo  

Science Conference Proceedings (OSTI)

Conventional photometric stereo has a fundamental limitation that the scale of recovered geometry is limited to the resolution of the input images. However, surfaces that contain sub-pixel geometric structures are not well modelled by a single normal ...

Ping Tan; Stephen Lin; Long Quan

2006-05-01T23:59:59.000Z

154

High resolution digital delay timer  

DOE Patents (OSTI)

Method and apparatus are provided for generating an output pulse following a trigger pulse at a time delay interval preset with a resolution which is high relative to a low resolution available from supplied clock pulses. A first lumped constant delay (20) provides a first output signal (24) at predetermined interpolation intervals corresponding to the desired high resolution time interval. Latching circuits (26, 28) latch the high resolution data (24) to form a first synchronizing data set (60). A selected time interval has been preset to internal counters (142, 146, 154) and corrected for circuit propagation delay times having the same order of magnitude as the desired high resolution. Internal system clock pulses (32, 34) count down the counters to generate an internal pulse delayed by an interval which is functionally related to the preset time interval. A second LCD (184) corrects the internal signal with the high resolution time delay. A second internal pulse is then applied to a third LCD (74) to generate a second set of synchronizing data (76) which is complementary with the first set of synchronizing data (60) for presentation to logic circuits (64). The logic circuits (64) further delay the internal output signal (72) to obtain a proper phase relationship of an output signal (80) with the internal pulses (32, 34). The final delayed output signal (80) thereafter enables the output pulse generator (82) to produce the desired output pulse (84) at the preset time delay interval following input of the trigger pulse (10, 12).

Martin, Albert D. (Los Alamos, NM)

1988-01-01T23:59:59.000Z

155

Nonlinear effects in kinetic resolutions  

E-Print Network (OSTI)

The impact of nonlinear effects in the asymmetric catalysis of kinetic resolutions is analyzed. It is found with minimal assumptions that the kinetics of homocompetitive reactions should apply generally to kinetic resolutions involving partially resolved catalysts, and this is supported by experimental observations with the Jacobsen hydrolytic kinetic resolution (HKR) of epoxides. The criterion for a nonlinear effect in asymmetric catalysis--a nonlinear correlation between the enantiomeric excess in a choral ligand and the product enantiomeric excess obtained from a reaction--is examined. The nonlinear effect idea is found to be generalizable to kinetic resolutions and other reactions by replacing consideration of the product enantiomeric excess with the quantity (k[]/k[]-1)/(k[]/k[]+1), a differential kinetic enantiomeric enhancement (DKEE). A nonlinear effect may then be defined by a nonlinear correlation between the DKEE and the chiral ligand enantiomeric excess. The application of these ideas to previously reported kinetic resolutions of sulfoxides and to nonlinear effects in the Jacobsen HKR is described. Relatively small nonlinear effects in kinetic resolutions are sufficient to obtain large asymmetric amplifications. A catalyst modification in the Jacobsen HKR also allows for the development of a novel recyclable system for the iterative enhancement of optical activity.

Johnson, Derrell W.

1999-01-01T23:59:59.000Z

156

The Stokes-Einstein Relation at Moderate Schmidt Number  

E-Print Network (OSTI)

The Stokes-Einstein relation for the self-diffusion coefficient of a spherical particle suspended in an incompressible fluid is an asymptotic result in the limit of large Schmidt number, that is, when momentum diffuses much faster than the particle. When the Schmidt number is moderate, which happens in most particle methods for hydrodynamics, deviations from the Stokes-Einstein prediction are expected. We study these corrections computationally using a recently-developed minimally-resolved method for coupling particles to an incompressible fluctuating fluid in both two and three dimensions. We find that for moderate Schmidt numbers the diffusion coefficient is reduced relative to the Stokes-Einstein prediction by an amount inversely proportional to the Schmidt number in both two and three dimensions. We find, however, that the Einstein formula is obeyed at all Schmidt numbers, consistent with linear response theory. The numerical data is in good agreement with an approximate self-consistent theory, which can be used to estimate finite-Schmidt number corrections in a variety of methods. Our results indicate that the corrections to the Stokes-Einstein formula come primarily from the fact that the particle itself diffuses together with the momentum. Our study separates effects coming from corrections to no-slip hydrodynamics from those of finite separation of time scales, allowing for a better understanding of widely observed deviations from the Stokes-Einstein prediction in particle methods such as molecular dynamics.

F. Balboa Usabiaga; X. Xie; R. Delgado-Buscalioni; A. Donev

2013-09-27T23:59:59.000Z

157

An Active Gain-control System for Avalanche Photo-Diodes under Moderate Temperature Variations  

E-Print Network (OSTI)

Avalanche photodiodes (APDs) are promising light sensor for various fields of experimental physics. It has been argued, however, that variation of APD gain with temperature could be a serious problem preventing APDs from replacing traditional photomultiplier tubes (PMTs) in some applications. Here we develop an active gain-control system to keep the APD gain stable under moderate temperature variations. As a performance demonstration of the proposed system, we have tested the response of a scintillation photon detector consisting of a 5x5 mm^2 reverse-type APD optically coupled with a CsI(Tl) crystal. We show that the APD gain was successfully controlled under a temperature variation of DT = 20deg, within a time-cycle of 6000 sec. The best FWHM energy resolution of 6.1+-0.2 % was obtained for 662 keV gamma-rays, and the energy threshold was as low as 6.5 keV, by integrating data from +20deg - 0deg cycles. The corresponding values for -20deg - 0deg cycles were 6.9+-0.2 % and 5.2 keV, respectively. These results are comparable, or only slightly worse than that obtained at a fixed temperature. Our results suggest new potential uses for APDs in various space researches and nuclear physics. As examples, we briefly introduce the NeXT and Cute-1.7 satellite missions that will carry the APDs as scientific instruments for the first time.

J. Kataoka; R. Sato; T. Ikagawa; J. Kotoku; Y. Kuramoto; Y. Tsubuku; T. Saito; Y. Yatsu; N. Kawai; Y. Ishikawa; N. Kawabata

2006-02-17T23:59:59.000Z

158

VARIABLE MODERATOR REACTOR DEVELOPMENT PROGRAM. Quarterly Progress Report No. 1  

SciTech Connect

Development of the boiling water UO/sub 2/ fueled Variable Moderator Reactor (VMR) is conducted under contract for the USAEC. The initiation and progress of work under Phase I of the contract, Physics and Kinetic Analysis and Initial Evaluation,'' and the preparation for Phase II, Critical Experiment and Analysis of Results,'' are reported. A hydrodynamic flow sheet representing the sequence of calculations for the BOCH program was prepared. A preliminary block diagram of the kinetics model of the VMR was prepared. Work is reported on the PUREE code which is designed to give an accurate representation of the physics of the VMR core. A fuel element fabrication speciftcation was prepared and released for quotations. A study was made to select the most appropriate material for void simulation throughout the range of interest in the VMR. (W.D.M.)

1959-08-31T23:59:59.000Z

159

SAFETY EVALUATION OF LIGHT-WATER-MODERATED POWER REACTOR  

SciTech Connect

Important problems associated with safety evaluation are reviewed. In contrast to absolute safety,'' the concept of social safety'' is explained and factors to compose social safety'' are evaluated. Some comments are made on the philosophy of safety evaluation. A core spray and enclosure spray systems, which are essential with respect to safety evaluation of the maximum credible accident of light-water-moderated power reactors, are analyzed in detail. In evaluation of a core spray system, detailed analysis is made on loss-of- coolant accident, and effects of core spray system design (spray initiation time, spray flow rate, spray distribution, etc.) on fission release are quantitatively clarified. In evaluation of an enclosure spray system, various product release reduction factors are calculated and relative importance of an enclosure spray system is discussed. A hypothetical accident is analyzed. (auth)

Togo, Y.

1963-03-01T23:59:59.000Z

160

THE USE OF MODERATELY HIGH PRESSURES AT CRYOGENIC TEMPERATURES  

SciTech Connect

The application of moderately high pressures to work at low temperatures is described. The problems involved in the merging of these two disciplines are discussed as they relate to laboratory research as well as to large scale nuclear rocket testing facility usage. The equipment used to determine some physical properties of liquid cryogens up to 50000 lb/in./sup 2/ are also described. The methods of obtaining and applying the low temperature to the high pressure volume will be mentioned. The use of a reciprocating piston pump to pump cryogenic liquids to high pressures is described. Consideration is also given to the problems of cryogenic seals for large size vacuum jacketed cryogenic piping. Safety requirements are also mentioned. (P.C.H.)

Edeskuty, F.J.; Mills, R.L.

1963-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "modis moderate 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

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.

162

3-Dimensional Imaging At Nanometer Resolutions  

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

Information Technology & Communications 3-Dimensional Imaging At Nanometer Resolutions 3-Dimensional Imaging At Nanometer Resolutions An apparatus and method for enabling...

163

Dielectric microscopy with submillimeter resolution  

E-Print Network (OSTI)

In analogy with optical near-field scanning methods, we use tapered dielectric waveguides as probes for a millimeter wave vector network analyzer. By scanning thin samples between two such probes we are able to map the spatially varying dielectric properties of materials with sub-wavelength resolution; using a 150 GHz probe in transmision mode we see spatial resolution of around 500 microns. We have applied this method to a variety of highly heterogeneous materials. Here we show dielectric maps of granite and oil shale.

Nathan S. Greeney; John A. Scales

2007-06-20T23:59:59.000Z

164

GAMMA PROPORTIONAL COUNTER CONTAINING HIGH Z GAS AND LOW Z MODERATOR  

DOE Patents (OSTI)

A gamma radiation counter employing a gas proportional counter is described. The radiation counter comprises a cylindrical gas proportional counter which contains a high atomic number gas and is surrounded by a low atomic number gamma radiation moderator material. At least one slit is provided in the moderator to allow accident gamma radiation to enter the moderator in the most favorable manner for moderation, and also to allow low energy gamma radiation to enter the counter without the necessity of passing through the moderator. This radiation counter is capable of detecting and measuring gamma radiation in the energy range of 0.5-5 Mev. (AEC)

Fox, R.

1963-07-23T23:59:59.000Z

165

Moderation control in low enriched {sup 235}U uranium hexafluoride packaging operations and transportation  

Science Conference Proceedings (OSTI)

Moderation control is the basic parameter for ensuring nuclear criticality safety during the packaging and transport of low {sup 235}U enriched uranium hexafluoride before its conversion to nuclear power reactor fuel. Moderation control has permitted the shipment of bulk quantities in large cylinders instead of in many smaller cylinders and, therefore, has resulted in economies without compromising safety. Overall safety and uranium accountability have been enhanced through the use of the moderation control. This paper discusses moderation control and the operating procedures to ensure that moderation control is maintained during packaging operations and transportation.

Dyer, R.H. [USDOE Oak Ridge Operations Office, TN (United States); Kovac, F.M. [Oak Ridge National Lab., TN (United States); Pryor, W.A. [PAI Corp., Oak Ridge, TN (United States)

1993-10-01T23:59:59.000Z

166

Conceptual design of a pressure tube light water reactor with variable moderator control  

SciTech Connect

This paper presents the development of innovative pressure tube light water reactor with variable moderator control. The core layout is derived from a CANDU line of reactors in general, and advanced ACR-1000 design in particular. It should be stressed however, that while some of the ACR-1000 mechanical design features are adopted, the core design basics of the reactor proposed here are completely different. First, the inter fuel channels spacing, surrounded by the calandria tank, contains a low pressure gas instead of heavy water moderator. Second, the fuel channel design features an additional/external tube (designated as moderator tube) connected to a separate moderator management system. The moderator management system is design to vary the moderator tube content from 'dry' (gas) to 'flooded' (light water filled). The dynamic variation of the moderator is a unique and very important feature of the proposed design. The moderator variation allows an implementation of the 'breed and burn' mode of operation. The 'breed and burn' mode of operation is implemented by keeping the moderator tube empty ('dry' filled with gas) during the breed part of the fuel depletion and subsequently introducing the moderator by 'flooding' the moderator tube for the 'burn' part. This paper assesses the conceptual feasibility of the proposed concept from a neutronics point of view. (authors)

Rachamin, R.; Fridman, E. [Reactor Safety Div., Inst. of Resource Ecology, Helmholtz-Zentrum Dresden-Rossendorf, POB 51 01 19, 01314 Dresden (Germany); Galperin, A. [Dept. of Nuclear Engineering, Ben-Gurion Univ. of the Negev, POB 653, Beer Sheva 84105 (Israel)

2012-07-01T23:59:59.000Z

167

Effect Size and Moderators of Effects for Token Economy Interventions  

E-Print Network (OSTI)

There is a clear call to use evidence-based practice (EBP) in schools, and a growing knowledge base of practices that have proven to be effective in helping students achieve in educational settings. In addition, the current trends of Positive Behavior Supports (PBS) and Response to Intervention (RtI) advocate for preventative and proactive strategies. Token economies (TE) are one intervention that is proactive and can be flexible to use with students across a wide range of behaviors and settings. According to Higgins, Williams, and McLaughlin, token economy (TE) is an effective way to improve classroom behavior. Unfortunately, limited recent research is available that evaluated the effects and moderators of token economies in classroom settings. The purpose of this investigation was to Meta-analyze the single case research on TE implemented in school and is the first to offer effect size analysis and identify moderators. The use of TE's has been widely established as an evidence-based intervention for use in prisons, psychiatric hospitals, and school settings. However, very few articles discuss size of effects to expect, the essential elements required, or the practical implementation issues within a classroom. Many myths surround the use of a TE, i.e., many assume a token system is effective only for individuals and this is not so, as TE is effective for groups as well as individuals. In an age of accountability and emphasis on preventative evidence based practice evidence for using a TE and how to implement a TE is needed in our literature. Empirical evidence for the use of a token economy in a classroom is presented along with suggested implementation ideas. Twenty four studies were included in this Meta-analysis with an overall combined Tau-U ES of .78 of data showing improvement between phase A and B with CI90 [.72, .83]. Tau-U effect sizes ranged from .35 to 1.0. TE is effective with all ages evaluated (ages 3 - 15); however, statistically significant results indicated it was more effective with ages 6 - 15. Active ingredients (i.e. procedural steps) were evaluated, combined, and reported. Results indicate that TE is an evidence-based intervention to increase academic readiness behaviors and to decrease inappropriate behaviors.

Soares, Denise

2011-12-01T23:59:59.000Z

168

Molecular image resolution in electron microscopy  

Science Conference Proceedings (OSTI)

In order to determine the ultimate molecular resolution attainable with a conventional electron microscope

Natsu Uyeda; Takashi Kobayashi; Eiji Suito; Yoshiyasu Harada

1972-01-01T23:59:59.000Z

169

Design of a Moderated Multidetector Neutron Spectrometer for Optimal Specificity  

Science Conference Proceedings (OSTI)

Neutron spectrometry can play an important role in the detection and identification of neutron-emitting sources in various security applications. In the present work, a portable filtered array neutron spectrometer, consisting of twelve 6LiF-based thermal neutron detectors embedded within a single heterogeneous volume was designed and its expected performance compared to that of a commercially available 12-sphere Bonner spheres spectrometer. Each detector within the volume was designed to optimally respond to a unique portion of the neutron spectrum by varying the type and thickness of materials used to filter the spectrum as well as the thickness of the moderator in front of the detector. The available design space was permuted and performance metrics developed to identify the optimal geometries. The top performing detector geometries were then combinatorially explored to identify the best array of geometries that yielded the most information about a neutron spectrum. The best performing filtered array was found to provide as much spectral information as, or more than, the commercially available 12-sphere Bonner spheres spectrometer to which it was compared.

Harrison, Mark J [ORNL; Cherel, Quentin [University of Florida, Gainesville; Monterial, Mateusz [ORNL

2011-01-01T23:59:59.000Z

170

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

171

A Power and Resolution Adaptive  

E-Print Network (OSTI)

A new power and resolution adaptive flash ADC, named PRA-ADC, is proposed. The PRA-ADC enables exponential power reduction with linear resolution reduction. Unused parallel voltage comparators are switched to standby mode. The voltage comparators consume only the leakage power during the standby mode. The PRA-ADC, capable of operating at 5-bit, 6-bit, 7-bit, and 8-bit precision, dissipates 69 mW at 5-bit and 435 mW at 8-bit. The PRA-ADC was designed and simulated with 0.18 m CMOS technology. The PRA-ADC design is applicable to RF portable communication devices, allowing tighter management of power and e#ciency.

Flash Analog-To-Digital Converter; Jincheol Yoo; Daegyu Lee; Kyusun Choi; Jongsoo Kim

2002-01-01T23:59:59.000Z

172

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.

173

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

174

Neutronic Design Calculations on Moderators for the Spallation Neutron Source (SNS)  

DOE Green Energy (OSTI)

The Spallation Neutron Source (SNS) to be built at the Oak Ridge National Laboratory will provide an intense source of neutrons for a large variety of experiments. It consists of a high-energy (1-GeV) and high-power ({approximately}1-MW) proton accelerator, an accumulator ring, together with a target station and an experimental area. In the target itself, the proton beam will produce neutrons via the spallation process and these will be converted to low-energy (<2-eV) neutrons in moderators located close to the target. Current plans are to have two liquid-hydrogen (20-K) moderators and two room-temperature H{sub 2}O moderators. Extensive engineering design work has been conducted on the moderator vessels. For our studies we have produced realistic neutronic representations of these moderators. We report on neutronic studies conducted on these representations of the moderators using Monte Carlo simulation techniques.

Murphy, D.B.

1999-11-14T23:59:59.000Z

175

Regenerable Sorbents for CO2 Capture from Moderate and High Temperatur...  

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

(NETL) is seeking licensing partners interested in implementing United States Patent Number 7,314,847 entitled "Regenerable sorbents for CO 2 capture from moderate and...

176

Smooth mixed-resolution GPU volume rendering  

Science Conference Proceedings (OSTI)

We propose a mixed-resolution volume ray-casting approach that enables more flexibility in the choice of downsampling positions and filter kernels, allows freely mixing volume bricks of different resolutions during rendering, and does not require modifying ...

Johanna Beyer; Markus Hadwiger; Torsten Möller; Laura Fritz

2008-08-01T23:59:59.000Z

177

The Low-Resolution CCSM4  

Science Conference Proceedings (OSTI)

The low-resolution version of the Community Climate System Model, version 4 (CCSM4) is a computationally efficient alternative to the intermediate and standard resolution versions of this fully coupled climate system model. It employs an ...

Christine A. Shields; David A. Bailey; Gokhan Danabasoglu; Markus Jochum; Jeffrey T. Kiehl; Samuel Levis; Sungsu Park

2012-06-01T23:59:59.000Z

178

High Resolution Transmission Microscopy Characterization of an ...  

Science Conference Proceedings (OSTI)

High Resolution Transmission Microscopy Characterization of an Oxide ... Line Dislocation Dynamics Simulation of fundamental dislocation properties in ...

179

MODIS Land Products Subsets  

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

Shaaf, and the FLUXNET validation communities to choose sites and to identify the land products needed for validation. We also worked with MODAPS on subsetting the Land...

180

MODIS Land Products Subsets  

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

6,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49 where HDFname - string of fields separated by "periods" (e.g., "MOD13A2.A2000305.fnuswipark01.003.200127522...

Note: This page contains sample records for the topic "modis moderate 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

MODIS Land Products Subsets  

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

(Meter) MCD12Q1 LC MODISTerra+Aqua Lan Cover ( LC ) Type Yearly L3 Global 500m SIN Grid annual 500 MCD12Q2 LCD MODISTerra+Aqua Land Cover Dynamics ( LCD ) Yearly L3 Global...

182

Options for Pursuing Moderator Exclusion for Application to Spent-Fuel Transportation Packages  

Science Conference Proceedings (OSTI)

This report discusses options for pursuing moderator exclusion, either by itself or in combination with burnup credit, for application to the criticality evaluation of spent nuclear fuel transportation packages. Also, information is provided on how to proceed in developing a request for rulemaking if the industry determines that changes to the existing regulations for streamlining implementation of moderator exclusion are highly desirable.

2005-12-15T23:59:59.000Z

183

Options for Pursuing Moderator Exclusion for Application to Spent-Fuel Transportation Packages  

Science Conference Proceedings (OSTI)

This report discusses the concept of moderator exclusion, either by itself or in combination with burnup credit, for application to the criticality evaluation of spent nuclear fuel transportation packages. Information is also provided on how to proceed in the development of regulatory amendments if the industry determines that changes to the existing regulations for streamlining implementation of moderator exclusion are highly desirable.

2004-12-23T23:59:59.000Z

184

Leader personal influences on membership decisions in moderated online social networking groups  

Science Conference Proceedings (OSTI)

Moderated online social networking (MOSN) groups have become a prominent way for Internet users to form relationships, learn about specialized topics, and share their understandings with others. However, unlike traditional social and work groups, very ... Keywords: Attraction-selection-attrition (ASA) theory, Homogeneity, Leader-member congruence, Leadership style, Moderated online social network, Personal values, Personality

Gary F. Templeton; Xin (Robert) Luo; Tomas R. Giberson; Natalie Campbell

2012-12-01T23:59:59.000Z

185

Reconcile: A Coreference Resolution Research Platform  

Science Conference Proceedings (OSTI)

Despite the availability of standard data sets and metrics, approaches to the problem of noun phrase coreference resolution are hard to compare empirically due to the different evaluation setting stemming, in part, from the lack of comprehensive coreference resolution research platforms. In this tech report we present Reconcile, a coreference resolution research platform that aims to facilitate the implementation of new approaches to coreference resolution as well as the comparison of existing approaches. We discuss Reconcile's architecture and give results of running Reconcile on six data sets using four evaluation metrics, showing that Reconcile's performance is comparable to state-of-the-art systems in coreference resolution.

Stoyanov, V; Cardie, C; Gilbert, N; Riloff, E; Buttler, D; Hysom, D

2009-10-29T23:59:59.000Z

186

Reducing ADC Resolution by Using . . .  

E-Print Network (OSTI)

This contribution compares the required resolution of an analog-to-digital converter (ADC) when analog or digital band-pass filters are used for band separating in FDD based VDSL. It considers different band allocation scenarios, mostly for FTTCab deployment, and analyzes the reduction of the received signal dynamic range when analog filters are used. The obtained results are line code independent and show that a significant possible relaxation in ADC requirements may be achieved if analog band-pass filters are used instead of digital ones. Notice This document has been prepared to assist the Standard Committee T1-Telecommunications. It is offered to the Committee as a basis for discussion and is not a binding proposal on the companies involved. The requirements presented in this document are subject to change in form and numerical value after more study. The companies involved specifically reserve the right to add to, or amend, the statements contained herein. ----------------------...

Vladimir Oksman

1999-01-01T23:59:59.000Z

187

A Global Climatology of Single-Layer and Overlapped Clouds and their Optical Properties Developed Using a New Algorithm Applied to Terra/MODIS Data  

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

Global Climatology of Single-Layer and Overlapped Global Climatology of Single-Layer and Overlapped Clouds and their Optical Properties Developed Using a New Algorithm Applied to Terra/MODIS Data F.-L. Chang and Z. Li Earth System Science Interdisciplinary Center University of Maryland College Park, Maryland Z. Li Department of Meteorology University of Maryland College Park, Maryland Introduction To date, weather satellites are the only tool to measure cloud and climate variables on a global scale, an objective addressed by the International Satellite Cloud Climatology Project (ISCCP) (Rossow and Schiffer 1991; Rossow and Schiffer 1999). However, there is a dearth of information concerning the global climatology of cloud vertical structure and cirrus cloud properties. This is because the often-used

188

ARM - Publications: Science Team Meeting Documents  

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

On the Detection and Analysis of Multilayered Clouds: Comparison of MODIS On the Detection and Analysis of Multilayered Clouds: Comparison of MODIS Analyses with ARM CART Site Cloud Products Baum, B.A.(a), Nasiri, S.L.(b), and Mace, G.G.(c), NASA Langley Research Center (a), University of Wisconsin-Madison (b), University of Utah (c) Twelfth Atmospheric Radiation Measurement (ARM) Science Team Meeting We will present new ideas regarding the detection and analysis of multilayered clouds in Moderate Resolution Imaging Spectroradiometer (MODIS) imagery. Over the past year, the MODIS cloud property retrieval effort has matured considerably as algorithms have been improved and the instrument performance has been characterized more accurately. Errors caused by noise, striping, and out-of-band response have been reduced. We have developed and tested different approaches for daytime and nighttime

189

ARM - Publications: Science Team Meeting Documents  

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

Evaluation of Terra MODIS Aerosol and Water Vapor Measurements Using ARM Evaluation of Terra MODIS Aerosol and Water Vapor Measurements Using ARM SGP Data Ferrare, R.A. (a), Brasseur, L.H. (b), Turner, D.D. (c,d), Tooman, T.P. (e), Remer, L. (f), and Gao, B-C. (g), NASA Langley Research Center (a), Science Applications International Corporation/NASA/LaRC (b), Pacific Northwest National Laboratory (c), University of Wisconsin-Madison (d), Sandia National Laboratories (e), NASA Goddard Space Flight Center (f), Naval Research Laboratory (g) Eleventh Atmospheric Radiation Measurement (ARM) Science Team Meeting NASA's Moderate-Resolution Imaging Spectroradiometer (MODIS) sensor on the Earth Observing System (EOS) Terra satellite platform has been measuring aerosol and water vapor parameters since February 2000. The MODIS aerosol

190

Slide 1  

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

the New Collection of MODIS Aerosol Retrievals the New Collection of MODIS Aerosol Retrievals Against Ground-based Measurements Feng Niu and Zhanqing Li Department of Atmospheric and Oceanic Science, University of Maryland - College Park Introduction Aerosol retrievals over land are a major challenge and to date, only a handful of such products are available. The MODerate resolution Imaging Spectroradiometer (MODIS) currently provides the most extensive aerosol retrievals on a global basis, but validation is limited to a small number of ground stations. This study presents a comprehensive evaluation of Collection 4 and 5 MODIS aerosol products using ground measurements from the hand-held sunphotometer in China. The Collection 5 product uses a new algorithm to determine the surface reflectance and a new aerosol model

191

Retrieval of Atmospheric Optical Depth Profiles from Downward-Looking High-Resolution O2 A-Band Measurements: Optically Thin Conditions  

Science Conference Proceedings (OSTI)

A quasi-linear retrieval was developed to profile moderately thin atmospheres using a high-resolution O2 A-band spectrometer. The retrieval is explicitly linear with respect to single scattering; the multiple-scattering contribution is treated as ...

Qilong Min; Lee C. Harrison

2004-10-01T23:59:59.000Z

192

High Range Resolution Radar Measurements of the Speed Distribution of Breaking Events in Wind-Generated Ocean Waves: Surface Impulse and Wave Energy Dissipation Rates  

Science Conference Proceedings (OSTI)

A set of X-band radar measurements, backscattered from the sea surface at near grazing incidence with very high spatial and temporal resolution (30 cm in range and 2000-Hz pulse repetition frequency) in moderate wind conditions, are dominated by ...

O. M. Phillips; F. L. Posner; J. P. Hansen

2001-02-01T23:59:59.000Z

193

Performance of long-pulse source reference target-moderator-reflector configurations  

DOE Green Energy (OSTI)

We have calculated the performance of five similar target-moderator-reflector geometries that are reasonably well optimized for long-pulse source applications. For all cases, the moderators are fully coupled; that is, no poisons, decouplers, or liners are used. For each case, the energy- and time-dependent characteristics of the moderator source brightness have been parameteterized using empirical functions. These parameterizations have been made available to users of the Monte Carlo neutron scattering instrument design code MCLIB for use in evaluating the performance of neutron scattering instruments on a long-pulse source.

Pitcher, E.J.; Russell, G.J.; Seeger, P.A.; Ferguson, P.D.

1995-12-31T23:59:59.000Z

194

Internal Technical Report, Low-To-Moderate Temperature Reservoir Engineering Research Program - Fiscal Year 1982  

DOE Green Energy (OSTI)

Numerous low (<90 C) to moderate (90 C-150 C) geothermal resources occur in many areas of the United States. The reservoir research conducted at the Idaho National Engineering Laboratory (INEL) is designed to develop innovative techniques that can be used to evaluate reservoir characteristics and improve reservoir management for low-to-moderate temperature resources. The purpose of this report is to review the program accomplishments for FY 1982 and present the initial data and results obtained from the ongoing research program. The project tasks reported in this document are: (1) Low-To-Moderate Temperature Hydrothermal Reservoir Engineering Handbook; and (2) Reservoir Assessment Technique Development--data analysis and reaction kinetics.

Russell, B.F.; Dolenc, M.R.; Downs, W.F.; Hull, L.C.

1982-09-01T23:59:59.000Z

195

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

196

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

197

High Resolution Chemical and Mechanical Characterization of ...  

Science Conference Proceedings (OSTI)

Presentation Title, High Resolution Chemical and Mechanical Characterization of Energy Related Materials. Author(s), Michel L Trudeau, Lisa Rodrigue, René ...

198

Dispute Resolution Information | Department of Energy  

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

Department of the Navy ADR DOE's Office of Civil Rights and Diversity EEOC Federal Sector Alternative Dispute Resolution EEOC Laws, Regulations & Policy Guidance Federal Energy...

199

3D Micron-resolution Laue Diffraction  

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

by single rotation - Time resolution (4D) Grain outline determined - Ray tracing - conical slit - Back-projection tomography E>50 keV allows deep measurements Tensile...

200

Property:TemporalResolution | Open Energy Information  

Open Energy Info (EERE)

Property Edit with form History Facebook icon Twitter icon Property:TemporalResolution Jump to: navigation, search This is a property of type String. Pages using the property...

Note: This page contains sample records for the topic "modis moderate 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

Property:SpatialResolution | Open Energy Information  

Open Energy Info (EERE)

Property Edit with form History Facebook icon Twitter icon Property:SpatialResolution Jump to: navigation, search This is a property of type String. Pages using the property...

202

Is CO2 an Indoor Pollutant? Direct Effects of Low-to-Moderate...  

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

Is CO2 an Indoor Pollutant? Direct Effects of Low-to-Moderate CO2 Concentrations on Human Decision-Making Performance Title Is CO2 an Indoor Pollutant? Direct Effects of...

203

Meta-analysis of age and job performance relation: Is job complexity a moderator?.  

E-Print Network (OSTI)

??I conducted a meta-analysis of 121 samples (N = 18,694) that examined the relation between age and job performance with job complexity as a moderator.… (more)

Hardigree, Anna E.

2006-01-01T23:59:59.000Z

204

Hailstone Growth Trajectories in the Dynamic Evolution of a Moderate Hailstorm  

Science Conference Proceedings (OSTI)

For the purpose of studying the growth environment of hailstones in a moderate storm, more than 200 hailstones, collected at several points along the storm path, were investigated by crystallographic and isotopic analysis. The majority of the ...

Jean-Claude Grenier; Pierre Admirat Sadok Zair

1983-06-01T23:59:59.000Z

205

Zoning and occupancy-moderation for residential space-conditioning under demand-driven electricity pricing  

E-Print Network (OSTI)

Occupancy-moderated zonal space-conditioning (OZS) refers to the partitioning of a residence into different zones and independently operating the space-conditioning equipment of each zone based on its occupancy. OZS remains ...

Leow, Woei Ling, 1977-

2012-01-01T23:59:59.000Z

206

Vertical Transports by Plumes within the Moderately Convective Marine Atmospheric Surface Layer  

Science Conference Proceedings (OSTI)

Bursts in the kinematic vertical transports of heat and horizontal momentum in a moderately convective marine atmospheric surface layer are studied by applying the variable interval time averaging (VITA) detection method to principal components ...

Richard A. Mason; Hampton N. Shirer; Robert Wells; George S. Young

2002-04-01T23:59:59.000Z

207

A Case Study of Ships Forming and Not Forming Tracks in Moderately Polluted Clouds  

Science Conference Proceedings (OSTI)

The effects of anthropogenic particulate emissions from ships on the radiative, microphysical, and chemical properties of moderately polluted marine stratiform clouds are examined. A case study of two ships in the same air mass is presented where ...

Kevin J. Noone; Elisabeth Öström; Ronald J. Ferek; Tim Garrett; Peter V. Hobbs; Doug W. Johnson; Jonathan P. Taylor; Lynn M. Russell; Richard C. Flagan; John H. Seinfeld; Colin D. O’Dowd; Michael H. Smith; Philip A. Durkee; Kurt Nielsen; James G. Hudson; Robert A. Pockalny; Lieve De Bock; René E. Van Grieken; Richard F. Gasparovic; Ian Brooks

2000-08-01T23:59:59.000Z

208

An Intercomparison of Acoustic Current Meter Measurements in Low to Moderate Flow Regions  

Science Conference Proceedings (OSTI)

Instrumented, subsurface moorings deployed in the Scotian shelf and slope regions of the North Atlantic provide data in low to moderate flows for a current meter intercomparison. The primary instruments being evaluated are two acoustic Doppler ...

Adam Drozdowski; Blair J. W. Greenan

2013-08-01T23:59:59.000Z

209

Properties and Parameterization of the Stable Boundary Layer over Moderate Topography  

Science Conference Proceedings (OSTI)

Numerical simulations are used to investigate the impact on the stable boundary layer of moderate topography (with hill heights in some cases comparable to the undisturbed boundary layer depth). Area-averaged properties of the resulting boundary ...

A. R. Brown; N. Wood

2003-11-01T23:59:59.000Z

210

The Low-Resolution CCSM3  

Science Conference Proceedings (OSTI)

The low-resolution fully coupled configuration of the Community Climate System Model version 3 (CCSM3) is described and evaluated. In this most economical configuration, an ocean at nominal 3° resolution is coupled to an atmosphere model at T31 ...

Stephen G. Yeager; Christine A. Shields; William G. Large; James J. Hack

2006-06-01T23:59:59.000Z

211

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

212

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

213

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

214

Design studies of the Moderated Thermonic Heat Pipe Reactor (MOHTR) concept  

DOE Green Energy (OSTI)

Design studies, based primarily on neutronics analysis, have been conducted on a thermionic reactor concept that uses a combined beryllium and zirconium hydride moderator to facilitate the incorporation of heat pipe cooling into compact thermionic fuel element (TFE) based designs useful in the tens of kilowatts electrical power regime. The goal of the design approach is to achieve a single point failure free system with technologies such as TFEs, high-temperature heat pipes, and ZrH moderation, which have extensive test data bases and have been shown to be capable of long lifetimes. Beryllium is used to thermally couple redundant heat pipes to TFEs and ZrH is added to reduce critical size. Neutronic analysis undertaken to investigate this design approach shows that greater reactivity can be achieved for a given geometry with a combination of the two moderator materials than with ZrH alone and that the combined moderator is much less sensitive to hydrogen loss than more traditional ZrH-moderated thermionic reactor designs. These and other analytical approaches have demonstrated the credibility of a heat pipe cooled thermionic reactor concept that has a reactor height and diameter of 60 cm and a reactor mass of 400 kg for 30-kWe power output. 14 refs., 8 figs.

Ranken, W.A.; Turner, J.A.

1991-01-01T23:59:59.000Z

215

BIGFOOT Project Page  

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

BIGFOOT BIGFOOT The BigFoot Project Overview [bigfoot Logo] The goal of the BigFoot project was to support the validation of land products from the Moderate Resolution Imaging Spectrometer (MODIS) onboard NASA's Earth Observing System (EOS) satellite, Terra. Reflectance data from MODIS were used to produce several science products including land cover, leaf area index (LAI), and net primary production (NPP). The BigFoot project began in 1999,concluded in 2003, and was funded by NASA's Terrestrial Ecology Program. To validate these products, BigFoot combined ground measurements, high-resolution remote-sensing data, and ecosystem process models at nine flux tower sites representing different biomes to evaluate the effects of the spatial and temporal patterns of ecosystem characteristics on MODIS

216

Is CO2 an Indoor Pollutant? Direct Effects of Low-to-Moderate CO2  

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

Is CO2 an Indoor Pollutant? Direct Effects of Low-to-Moderate CO2 Is CO2 an Indoor Pollutant? Direct Effects of Low-to-Moderate CO2 Concentrations on Human Decision-Making Performance Title Is CO2 an Indoor Pollutant? Direct Effects of Low-to-Moderate CO2 Concentrations on Human Decision-Making Performance Publication Type Journal Article Refereed Designation Refereed LBNL Report Number LBNL-6196E Year of Publication 2012 Authors Satish, Usha, Mark J. Mendell, Krishnamurthy Shekhar, Toshifumi Hotchi, Douglas P. Sullivan, Siegfried Streufert, and William J. Fisk Journal Environmental Health Perspectives Volume 120 Issue 12 Pagination 1671-1677 Date Published 09/20/2012 Keywords carbon dioxide, cognition, Decision Making, human performance, indoor environmental quality, ventilation Abstract Background - Associations of higher indoor carbon dioxide (CO2) concentrations with impaired

217

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.

218

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

219

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

220

A probabilistic model for associative anaphora resolution  

Science Conference Proceedings (OSTI)

This paper proposes a probabilistic model for associative anaphora resolution in Japanese. Associative anaphora is a type of bridging anaphora, in which the anaphor and its antecedent are not coreferent. Our model regards associative anaphora as a kind ...

Ryohei Sasano; Sadao Kurohashi

2009-08-01T23:59:59.000Z

Note: This page contains sample records for the topic "modis moderate 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

Adopting ontologies for multisource identity resolution  

Science Conference Proceedings (OSTI)

Identity resolution aims at identifying the newly presented facts and linking them to their previous mentions. Our main hypothesis is that variations of one and the same fact can be recognised, duplications removed and their aggregation actually increases ...

Milena Yankova; Horacio Saggion; Hamish Cunningham

2008-10-01T23:59:59.000Z

222

Range resolution of unequal strength targets  

E-Print Network (OSTI)

This paper examines the problem of resolving targets whose amplitudes may differ. A common metric used for resolution that assumes targets of equal strength is modified for the subject scenario. An expression for range ...

Carlson, Blair D.

223

Sensitivity of Simulated Climate to Model Resolution  

Science Conference Proceedings (OSTI)

Dynamical measures of the climate (e.g., winds, eddy fluxes) simulated by a general circulation model are compared at different horizontal and vertical resolutions for the December, January, and February period. The simulations of the troposphere ...

Byron A. Boville

1991-05-01T23:59:59.000Z

224

Computer-optimized design of polyethylene-moderated {sup 3}He counters for fast neutrons  

Science Conference Proceedings (OSTI)

Because polyethylene-moderated {sup 3}He counters are rugged and reliable, they are generally the instruments of choice for field detection of fast neutrons in gamma-ray backgrounds. Their main drawback is the bulky, massive moderator needed to reduce the incident neutron energies to the sensitive range of the {sup 3}He+n capture reaction. This report discusses an optimization approach that provides a detector with uniform angular response and the maximum detection efficiency per unit mass. The key assumption is that each parameter has a geometrical interpretation and its effect on the response can be evaluated independently from that of the others. Specifically, the detection efficiency can be written as a product of separate functions for the moderator mass, gas pressure, tube position, etc., and the uniformity of the angular response is determined by the symmetry of the moderator dimensions. This analytical model was tested by compiling a comprehensive database of detector efficiencies as functions of the different parameters, including one- versus two-tube detectors, moderator masses from 1 to 6 kg, gas pressures from 1 to 20 atm, etc. In general, the model reproduced both the magnitude and angular dependence of the efficiency to within about 10%. To a high degree, the most important parameters are polyethylene mass and the quantity of {sup 3}He gas; because of neutron diffusion out of the moderator, the optimum tube positions are near the center of the detector. The highest value of the efficiency per unit mass occurs near 3 kg, a result that requires the most compact detectors to use more than a single {sup 3}He tube. In this case, the optimum detector has two tubes and a total mass of 3.0 kg. Although they could use 4-atm tubes with 2.54-cm diameters, increasing the gas volume could easily provide a 20% increase in efficiency with no changes in other parameters.

R. C. Byrd

2000-05-01T23:59:59.000Z

225

"Development and Neutronic Validation of pelletized Cold and Very Cold Moderators for Pulsed Neutron Sources" Phase II Final report  

Science Conference Proceedings (OSTI)

Intense beams of cold neutrons are produced at several DOE facilities and are used by researchers to study the microscopic structure of materials. Energetic neutrons are produced by a high energy proton beam impacting a target. The fast neutrons are converted to the desired cold neutrons passing through a cryogenic moderator vessel, presently filled with dense cold hydrogen gas. Moderators made from solid methane have demonstrated superior performance to the hydrogen moderators but cannot be implemented on high power sources such as the SNS due to the difficulty of removing heat from the solid blocks of methane. Cryogenic Applications F, Inc has developed the methane pellet formation and transport technologies needed to produce a hydrogen cooled solid methane pellet moderator, potentially capable of being used in a high power spallation neutron facility. Such a methane pellet moderator could double the brightness of the neutron beam. Prior to this work a methane pellet moderator had not been produced or studied. The Indiana University LENS facility is a small pulsed neutron source used in part to study and develop cold neutron moderators. In this project cold neutrons were produced in a solid methane pellet moderator and analyzed with the LENS facility diagnostics. The results indicated that the neutron beam formed by the pellet moderator was similar to that of a solid methane block moderator.

Foster, Christopher; Baxter, David V

2012-11-17T23:59:59.000Z

226

Extended Kantorovich method for static analysis of moderately thick functionally graded sector plates  

Science Conference Proceedings (OSTI)

In this paper, an iterative procedure based on the extended Kantorovich method (EKM) is presented to gain highly accurate solution for bending of moderately thick functionally graded (FG) fully clamped sector plates. Effective mechanical properties of ... Keywords: Bending analysis, Extended Kantorovich method, Fully clamped sector plates, Functionally graded material

M. M. Aghdam; N. Shahmansouri; M. Mohammadi

2012-12-01T23:59:59.000Z

227

On-Line Determination of the MTC 1 On-Line Determination of the MTC (Moderator  

E-Print Network (OSTI)

for water moderated power reactors, an American National Standard. American Nuclear Society, ANSI/ANS-19 temperature coefficient of pressurized water reactors: I. Theory. Nuc. Sci. Eng. 108: 331-340 27. Thomas JR Jr Coefficient) by Neutron Noise and Gamma-Thermometer Signals C. Demazière and I. Pázsit Department of Reactor

Demazière, Christophe

228

IDAHO NATIONAL LABORATORY TRANSPORTATION TASK REPORT ON ACHIEVING MODERATOR EXCLUSION AND SUPPORTING STANDARDIZED TRANSPORTATION  

SciTech Connect

Following the defunding of the Yucca Mountain Project, it is reasonable to assume that commercial used fuel will remain in storage for the foreseeable future. This report proposes supplementing the ongoing research and development work related to potential degradation of used fuel, baskets, poisons, and storage canisters during an extended period of storage with a parallel path. This parallel path can assure criticality safety during transportation by implementing a concept that achieves moderator exclusion (no in-leakage of moderator into the used fuel cavity). Using updated risk assessment insights for additional technical justification and relying upon a component inside of the transportation cask that provides a watertight function, a strong argument can be made that moderator intrusion is not credible and should not be a required assumption for criticality evaluations during normal conditions of transportation. A demonstrating testing program supporting a detailed analytical effort as well as updated risk assessment insights can provide the basis for moderator exclusion during hypothetical accident conditions. This report also discusses how this engineered concept can support the goal of standardized transportation.

D.K. Morton

2011-09-01T23:59:59.000Z

229

Development of a Method for Measuring the Moderator Temperature Coefficient by Noise Analysis and Its Experimental  

E-Print Network (OSTI)

of Technology, Department of Reactor Physics SE-41296 Gothenburg, Sweden Received February 6, 2003 Accepted if the reactor can be operated until its expected EOC. According to the newest U.S. standard, the MTC is definedDevelopment of a Method for Measuring the Moderator Temperature Coefficient by Noise Analysis

Demazière, Christophe

230

Recently developed well test insrumentation for low-to-moderate temperature hydrothermal reservoirs  

DOE Green Energy (OSTI)

The engineering drawings, assembly instructions, and recommended usage for several of the instruments developed for low and moderate temperature (< 150/sup 0/C) hydrothermal well testing are presented. Included are the drawings for: a downhole pressure and temperature instrument, a multi-conductor cablehead, a line driver to be used with the downhole pressure and temperature instrument, and a fluid-level detector.

Solbau, R.; Goranson, C.B.; Benson, S.M.

1981-08-01T23:59:59.000Z

231

High resolution fossil fuel combustion CO2 emission fluxes for...  

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

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

232

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

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

Marketing Administration Other Agencies You are here Home Revised Continuing Appropriations Resolution, 2007, P.L. 110-5 Revised Continuing Appropriations Resolution, 2007,...

233

Observation of Lithium Ions at Atomic Resolution Using an ...  

Science Conference Proceedings (OSTI)

Presentation Title, Observation of Lithium Ions at Atomic Resolution Using an ... at atomic resolution in several important electrode materials for Li-ion batteries.

234

A remark on higher order RUE-resolution with EXTRUE  

E-Print Network (OSTI)

We show that a prominent counterexample for the completeness of first order RUE-resolution does not apply to the higher order RUE-resolution approach EXTRUE.

Benzmueller, Christoph

2009-01-01T23:59:59.000Z

235

High resolution electron crystallography of protein molecules  

Science Conference Proceedings (OSTI)

Electron diffraction data and high resolution images can now be used to obtain accurate, three-dimensional density maps of biological macromolecules. These density maps can be interpreted by building an atomic-resolution model of the structure into the experimental density. The Cowley-Moodie formalism of dynamical diffraction theory has been used to validate the use of kinematic diffraction theory, strictly the weak phase object approximation, in producing such 3-D density maps. Further improvements in the preparation of very flat specimens and in the retention of diffraction to a resolution of 0.2 nm or better could result in electron crystallography becoming as important a technique as x-ray crystallography currently is for the field of structural molecular biology.

Glaeser, R.M. [California Univ., Berkeley, CA (United States). Dept. of Molecular and Cell Biology]|[Lawrence Berkeley Lab., CA (United States); Downing, K.H. [Lawrence Berkeley Lab., CA (United States)

1993-06-01T23:59:59.000Z

236

CONSTRUCTING A WISE HIGH RESOLUTION GALAXY ATLAS  

Science Conference Proceedings (OSTI)

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

237

Transformational leadership and group affective well-being and job satisfaction: a group-level test of two potential moderators.  

E-Print Network (OSTI)

??This study examines the relationship between supervisors’ transformational leadership behaviors and their work groups’ subsequent affective well-being and job satisfaction under specific moderating conditions (collective… (more)

Bruning, Patrick

2010-01-01T23:59:59.000Z

238

High resolution simulation of the South Asian monsoon using a variable resolution global climate model  

E-Print Network (OSTI)

High resolution simulation of the South Asian monsoon using a variable resolution global climate understand regional aspects of the South Asian monsoon rainfall distribution and the interactions between monsoon circulation and precipitation. For this purpose, two sets of ten member realizations are produced

Hourdin, Chez Frédéric

239

High resolution A/D conversion based on piecewise conversion at lower resolution  

SciTech Connect

Piecewise conversion of an analog input signal is performed utilizing a plurality of relatively lower bit resolution A/D conversions. The results of this piecewise conversion are interpreted to achieve a relatively higher bit resolution A/D conversion without sampling frequency penalty.

Terwilliger, Steve (Albuquerque, NM)

2012-06-05T23:59:59.000Z

240

RAPID DAMAGE ASSESSMENT FROM HIGH RESOLUTION IMAGERY  

SciTech Connect

Disaster impact modeling and analysis uses huge volumes of image data that are produced immediately following a natural or an anthropogenic disaster event. Rapid damage assessment is the key to time critical decision support in disaster management to better utilize available response resources and accelerate recovery and relief efforts. But exploiting huge volumes of high resolution image data for identifying damaged areas with robust consistency in near real time is a challenging task. In this paper, we present an automated image analysis technique to identify areas of structural damage from high resolution optical satellite data using features based on image content.

Vijayaraj, Veeraraghavan [ORNL; Bright, Eddie A [ORNL; Bhaduri, Budhendra L [ORNL

2008-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "modis moderate resolution" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
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We encourage you to perform a real-time search of NLEBeta
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241

Bootstrapping path-based pronoun resolution  

Science Conference Proceedings (OSTI)

We present an approach to pronoun resolution based on syntactic paths. Through a simple bootstrapping procedure, we learn the likelihood of coreference between a pronoun and a candidate noun based on the path in the parse tree between the two entities. ...

Shane Bergsma; Dekang Lin

2006-07-01T23:59:59.000Z

242

Apparent display resolution enhancement for moving images  

Science Conference Proceedings (OSTI)

Limited spatial resolution of current displays makes the depiction of very fine spatial details difficult. This work proposes a novel method applied to moving images that takes into account the human visual system and leads to an improved perception ... Keywords: eye tracking, image reconstruction, perception

Piotr Didyk; Elmar Eisemann; Tobias Ritschel; Karol Myszkowski; Hans-Peter Seidel

2010-07-01T23:59:59.000Z

243

Spatial Resolution of the Pressure Anemometer  

Science Conference Proceedings (OSTI)

One of the important characteristics of an anemometer is its spatial resolution. A three-dimensional generalization is given of a method to calculate the transfer function as a function of the wavenumber, devised by Kaimal et al. for a sonic ...

W. A. Oost; G. J. Komen

1983-12-01T23:59:59.000Z

244

The development of solid methane neutron moderators at the Intense Pulsed Neutron Source facility of Argonne National Laboratory.  

DOE Green Energy (OSTI)

The Intense Pulsed Neutron Source (IPNS) started using solid methane moderators in 1985 because of their efficient conversion (about 3.5 times greater than was achieved with a liquid hydrogen moderator) of fast neutrons to long wavelength neutrons. However, the solid methane moderators experienced numerous failures due to pressure surges caused by a combination of (1) the release of stored energy, which occurred when methane radiolytic products recombined, and (2) the expansion of hydrogen, which built up in the solid methane during irradiation. During the ensuing years studies were made to determine how to operate the solid methane moderators without causing failure. The rate at which stored energy built up during irradiation and the temperature at which hydrogen was released during annealing were determined. Since 1993 IPNS has successfully operated the solid methane moderators (at about 30 K) by periodically annealing to the liquid state around 90 K after every roughly three days of irradiation.

Carpenter, J. M.; Miller, M. E.; Scott, T. L.

1999-03-10T23:59:59.000Z

245

CFD Simulation of the CANDU-6 Moderator Circulation Under Normal Operating Conditions  

Science Conference Proceedings (OSTI)

A steady-state 3D simulation for predicting the local subcooling of the moderator in the vicinity of the calandria tubes in a CANDU-6 reactor is performed. For the current simulation, a set of grid structures with the same geometry as the CANDU-6 moderator tank, called 'calandria vessel', is generated and the momentum, heat and continuity equations are solved by CFX-4.3, a CFD code developed by AEA technology. The standard k-{epsilon} turbulence model associated with logarithmic wall treatment is used to model turbulence generation and dissipation within the vessel. The moderator fluid is heavy water. Buoyancy forces are modeled using the Boussinesq approximation in which density is assumed to be a linear function of temperature. The matrix of the calandria tubes in the center region of the calandria vessel is simplified by the porous media approach. The anisotropic hydraulic impedance of the calandria tubes is modeled using the frictional pressure drop correlations suggested by Idelchik and Szymanski. The heat load in this steady-state simulation is conservatively set as 103 MW of 103% full power, consisting of 96.7 MW to the core region and 6.3 MW to the reflector region. The total volumetric flow rate through eight inlet nozzles is 940 L/s and the outlet temperature is constantly 71.0 deg. C. The thermal boundary condition of the circumferential vessel wall is assumed a little heat flux out. As a result, the velocity field and temperature distribution of a CANDU-6 moderator in the operating condition are presented. The flow pattern identified in this simulation is the weak jet momentum-dominated flow, which is generated by the interaction between the buoyancy force by heating and the dominant momentum forces by inlet jets. The calculated maximum temperature of the moderator is 83.0 deg. C at the lower center region of the core, which corresponds to the minimum subcooling of 33.0 deg. C considering the boiling point increase due to the hydrostatic pressure change. (authors)

Bo Wook Rhee; Churl Yoon; Byung-Joo Min [Korea Atomic Energy Research Institute, 150, Dukjin-Dong, Yusong-Gu, Taejon 305-353 (Korea, Republic of)

2002-07-01T23:59:59.000Z

246

The other high resolution post accelerator approach  

Science Conference Proceedings (OSTI)

There has been significant discussion in consideration of a high resolution mass separator followed by a RFQ and a linear accelerator as the basic format for IsoSpin Laboratory. There exists another strong possibility-namely a low-resolution mass separator coupled to a cyclotron. The major objection to this approach has been that the conversion from the +1 mass separator beam to a q/m beam of 1/4 to 1/3 is thought to be highly inefficient. Since we are in the fortunate position of having the two expensive components of this system available for tests (an on-line mass separator and an ECR source), we intend to couple these devices to actually measure these efficiencies and to test ideas for improving the efficiency. We present some specifics of this approach.

Moltz, D.M.; Tighe, R.J.; Rowe, M.W.; Ognibene, T.J.; Cerny, J.

1993-05-24T23:59:59.000Z

247

High resolution patterning of silica aerogels  

SciTech Connect

Three-dimensional metallic structures are fabricated with high spatial resolution in silica aerogels. In our method, silica hydrogels are prepared with a standard base-catalyzed route, and exchanged with an aqueous solution typically containing Ag{sup +} ions (1 M) and 2-propanol (0.2 M). The metal ions are reduced photolytically with a table-top ultraviolet lamp, or radiolytically, with a focused X-ray beam. We fabricated dots and lines as small as 30 x 70 {micro}m, protruding for several mm into the bulk of the materials. The hydrogels are eventually supercritically dried to yield aerogels, without any measurable change in the shape and spatial resolution of the lithographed structures. Transmission electron microscopy shows that illuminated regions are composed by Ag clusters with a size of several {micro}m, separated by thin layers of silica.

Bertino, M.F.; Hund, J.F.; Sosa, J.; Zhang, G.; Sotiriou-Leventis, C.; Leventis, N.; Tokuhiro, A.T.; Terry, J. (UMR-MUST); (IIT)

2008-10-30T23:59:59.000Z

248

High resolution x-ray microscope  

Science Conference Proceedings (OSTI)

The authors present x-ray images of grid meshes and biological material obtained using a microspot x-ray tube with a multilayer optic and a 92-element parabolic compound refractive lens (CRL) made of a plastic containing only hydrogen and carbon. Images obtained using this apparatus are compared with those using an area source with a spherical lens and a spherical lens with multilayer condenser. The authors found the best image quality using the multilayer condenser with a parabolic lens, compared to images with a spherical lens and without the multilayer optics. The resolution was measured using a 155-element parabolic CRL and a multilayer condenser with the microspot tube. The experiment demonstrates about 1.1 {mu}m resolution.

Gary, C. K.; Park, H.; Lombardo, L. W.; Piestrup, M. A.; Cremer, J. T.; Pantell, R. H.; Dudchik, Y. I. [Adelphi Technology, Inc. 981-B Industrial Road, San Carlos, California 94070 (United States); Department of Electrical Engineering, Stanford University, Stanford, California 94305 (United States); Institute of Applied Physics Problems, Kurchatova 7, Minsk 220064 (Belarus)

2007-04-30T23:59:59.000Z

249

ARM - Publications: Science Team Meeting Documents  

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

Validation of CERES/MODIS Cloud Property Retrievals Using Ground-Based Validation of CERES/MODIS Cloud Property Retrievals Using Ground-Based Measurements Obtained at the DOE ARM SGP Site Dong, X.(a), Minnis, P.(b), Sun-Mack, S.(b), and Mace, G.G.(a), University of Utah (a), NASA Langley Research Center (b) Twelfth Atmospheric Radiation Measurement (ARM) Science Team Meeting Cloud macrophysical and microphysical properties derived from the NASA TERRA (EOS-AM) Moderate Resolution Spectroradiometer (MODIS) as part of the Clouds and the Earth's Radiant Energy System (CERES) project during November 2000-June 2001 are compared to simultaneous ground-based observations. The ground-based data taken by the Atmospheric Radiation Measurement (ARM) Program are used as "ground truth" data set in the validation of the CERES cloud products and to improve the CERES daytime and

250

ARM - Publications: Science Team Meeting Documents  

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

Validation of TERRA MODIS Cloud Properties Using Ground-Based Measurements Validation of TERRA MODIS Cloud Properties Using Ground-Based Measurements at the DOE ARM SGP Site Dong, X.(a), Xi, B.(a), Minnis, P.(b), Wielicki, B.(b), Sun-Mack, S.(c), Chen,Y.(c), and Mace, G.G.(d), University of North Dakota (a), NASA/Langley Research Center (b), SAIC, Inc. (c), University of Utah (d) Cloud macrophysical and microphysical/optical properties derived from the Moderate Resolution Imaging Spectroradiometer (MODIS) on Terra as part of the Clouds and the Earth's Radiant Energy System (CERES) project during February 2000-December 2001 are compared to simultaneous ground-based observations. The ground-based data taken over the Atmospheric Radiation Measurement (ARM) Program Southern Great Plains (SGP) site are used as cloud truth data set in the validation of the CERES Science Team derived

251

BigFoot GPP and NPP Summaries, 2000-2004  

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

GPP and NPP Summaries, 2000-2004 GPP and NPP Summaries, 2000-2004 Reflectance data from MODIS, the Moderate Resolution Imaging Spectrometer onboard NASA's Earth Observing System (EOS) satellite Terra ( http://landval.gsfc.nasa.gov/MODIS/index.html ), is used to produce several science products including land cover, leaf area index (LAI), gross primary production (GPP) and net primary production (NPP). The overall goal of the BigFoot Project was to provide validation of these products. Background information on the BigFoot Project is available at: http://www.fsl.orst.edu/larse/bigfoot/index.html. A set of NPP/GPP summary figures was developed for each of the 9 BigFoot sites. Each set contains images and figures associated with creating the BigFoot NPP and GPP products, comparing them to MODIS products, and

252

ITER TCWS Conceptual Design Chit Resolution Report  

SciTech Connect

Design Chits resulted from the External Conceptual Design Review (CDR) held at Cadarache on July 21-23, 2009 (Reference [5.1.3]). Those Chits were categorized into 3 categories in accordance with the following rules: Category 1 - Chits to be resolved before proceeding with preliminary design; Category 2 - Chits to be resolved during preliminary design; and Category 3 - Chits already resolved or covered by higher category Chits such that no further action is required. Prior to the preliminary design, all the category 1 chits were resolved and the category chit 1 resolution report was approved (Reference [5.1.4]). However, as the design has been evolving, one of the category 1 chits needs to be re-addressed. The purpose of this report is to present the resolutions to one CDR Category 1 Chit (Cat 1 Chit No.5) and twenty-three CDR Category 2 Chits. The Category 2 Chit resolutions presented are listed in order from item number one to item number twenty-three.

Berry, Jan [ORNL

2012-02-01T23:59:59.000Z

253

FUEL CYCLE COSTS IN A GRAPHITE MODERATED SLIGHTLY ENRICHED FUSED SALT REACTOR  

SciTech Connect

A fuel cycle economic study has been made for a 315Mwe graphite- moderated slightly enriched fused-salt reactor. Fuel cycle costs of less than 1.5 mills may be possible for such reactors operating on a ten-year cycle even when the fuel is discarded at the end of the cycle. Recovery of the uranium and plutonium at the end of the cycle reduces the fuel cycle costs to approximates 1 mill/kwh. Changes in the waste storage cost, reprocessing cost or salt inventory have a relatively minor effect on fuel cycle costs. (auth)

Guthrie, C.E.

1959-01-01T23:59:59.000Z

254

Heat Capacity of MgB2: Evidence for Moderately Strong Coupling Behavior  

E-Print Network (OSTI)

We characterize the superconducting state of a phase pure polycrystalline sample of the new layered high-temperature superconductor MgB2 by specific heat measurements in magnetic fields up to 9 Tesla. The characteristic jump at the superconducting transition is observed and compared with the predictions of weak coupling BCS-theory and the ?-model. Our analysis shows excellent agreement with the predictions for ? = ?/kBTC = 2.1(1) with a Sommerfeld term ? of 1.1(1) mJ/mol K indicating that MgB2 is a superconductor in the moderately strong electron-phonon coupling regime.

R. K. Kremer; B. J. Gibson; K. Ahn

2001-01-01T23:59:59.000Z

255

Case studies of low-to-moderate temperature hydrothermal energy development  

DOE Green Energy (OSTI)

Six development projects are examined that use low- (less than 90/sup 0/C (194/sup 0/F)) to-moderate (90 to 150/sup 0/C (194 to 302/sup 0/F)) temperature geothermal resources. These projects were selected from 22 government cost-shared projects to illustrate the many facets of hydrothermal development. The case studies describe the history of this development, its exploratory methods, and its resource definition, as well as address legal, environmental, and institutional constraints. A critique of procedures used in the development is also provided and recommendations for similar future hydrothermal projects are suggested.

Not Available

1981-10-01T23:59:59.000Z

256

METHANE AND n-BUTANE OXIDATION WITH CO2 UNDER RADIOFREQUENCY PLASMAS OF MODERATE PRESSURES (*)  

E-Print Network (OSTI)

1205 METHANE AND n-BUTANE OXIDATION WITH CO2 UNDER RADIOFREQUENCY PLASMAS OF MODERATE PRESSURES) Résumé. 2014 L'oxydation du méthane et du n-butane avec CO2 a été étudiée dans des décharges électriques intermédiaires en C2 (C2H2, C2H4, C2H6) qui est la voie principale pour convertir mé- thane et n-butane en CO

Paris-Sud XI, Université de

257

100-MW NUCLEAR POWER PLANT UTILIZING A SODIUM COOLED, GRAPHITE MODERATED REACTOR  

SciTech Connect

The conceptual design of a 100 Mw(e) nuclear power plant is described. The plant utilized a sodium-cooled graphite-moderated reactor with stainless- steel clad. slightiy enriched UO/sub 2/ fuel. The reactor is provided with three main coolant circuits, and the steam cycle has three stages of regenerative heating. The plant control system allows automatic operation over the range of 20 to 100% load, or manual operation at all loads. The site, reactor, sodium systems, reactor auxiliaries, fuel handling, instrumentation, turbine-generator, buildings. and safety measures are described. Engineering drawings are included. (W.D.M.)

1958-02-28T23:59:59.000Z

258

EVALUATION OF CALANDRIA, THIMBLE, AND CANNED-MODERATOR CONCEPTS FOR SODIUM GRAPHITE REACTORS  

SciTech Connect

In efforts to improve the neutron economy and lower the capital costs of sodium graphite reactors, several methods of separating the sodium and graphite were investigated including the calandria, the thimble, and the canned moderator reactors. An analysis including nuclear, heat transfer, and economic comparisons was made of these SGR concepts. Based upon neutron economy and feasibility of core fabrication, the calandria concept appears to offer the greatest potential for improvement in 8GR design. The thimble concept provides some improvement in neutron economy but introduced numerous problems requiring developmental work. (auth)

Reed, G.L.

1960-06-10T23:59:59.000Z

259

MODIS Land Products Subsets Demo  

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

GLOBAL Subsetting and GLOBAL Subsetting and Visualization Tool Webinar: Bringing time-series satellite-based land data to the field scientist National Aeronautics and Space Administration www.nasa.gov Suresh K.S. Vannan and Tammy Walker Beaty Oak Ridge National Laboratory Distributed Active Archive Center, ORNL DAAC July 24 and 25, 2013 National Aeronautics and Space Administration Tammy Walker Beaty 2 About ORNL DAAC * The Oak Ridge National Laboratory Distributed Active Archive Center (ORNL DAAC) for biogeochemical dynamics is one of the National Aeronautics and Space Administration (NASA) Earth Observing System Data and Information System (EOSDIS) data centers managed by the Earth Science Data and Information System (ESDIS) Project, which is responsible for providing users with access to data from NASA's Earth Science

260

HEAVY-WATER-MODERATED POWER REACTORS ENGINEERING AND ECONOMIC EVALUATIONS. VOLUME I. SUMMARY REPORT  

SciTech Connect

Capital investments and the cost of power were estimated for 21 heavy- water-moderated, natural-uraniumfueled power-reactor plants, ranging in capacity from 100 to 460 Mw(e). Comparisons were made of hot- and coldmoderator reactors and of the relative merits of pressuretube and pressure-vessel designs. Reactors cooled with liquid D/sub 2/O, boiling D/sub 2/O, /sub 2/O steam, and helium were evalunted. A cold-moderator pressure-tube reactor cooled with boiling D/sub 2/O shows the most economic promise of the D/sub 2/Omoderated reactor systems studied to date. Reactors of this type have sufficient reactivity to permit satisfactory fuel exposures, but the development of additional technology is a prerequisite for optimum designs. At capacities of 300 and 400 Mw(e), the estimated power costs from the current designs of boiling-D/sub 2/O pressure-tabe reactor plants are 11.3 and 9.8 mills/kwh, respectively. From liquid-D/sub 2/-cooled concepts of comparable capacities the indicated power costs are 7 to 20% higher. With an active development program, a power cost of 8.0 to 8.5 mills/kwh may be attained in a 300 Mw(e) boiling-D/sub 2/O reactor plant within the next decade. (auth)

1960-06-01T23:59:59.000Z

Note: This page contains sample records for the topic "modis moderate 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

SOCIAL SUPPORT: MEDIATORS AND MODERATORS OF DEPRESSION IN A SPINAL CORD INJURY SAMPLE WITH CHRONIC PAIN  

E-Print Network (OSTI)

Chronic pain and depression are frequently co-reported secondary complications following spinal cord injury (SCI) that impact multiple psychosocial domains. This study investigated the contribution of pain intensity, perceived stress, pain coping strategies, pain interference, and social support in depression and sought to identify mediator and moderator effects in the pain-depression relationship among persons with chronic SCI pain. Perceived stress, pain coping strategies, and pain interference were proposed as likely mediators of pain intensity and depression. Different types of social support were proposed as likely moderators of pain intensity and depression. The SCI sample consisted of 60 people with chronic pain who completed measures of pain intensity, perceived stress, pain coping strategies, pain interference, social support, and depression. Demographic and injury-related factors were also examined as confounding variables. Occupational status, positive reframing, behavioral disengagement, self-blame, emotional support, perceived stress, and pain interference were associated with depression, with 7% of variance in depression accounted for by occupational status, 19 % of variance in

Michael W. Wilson; J. Scott Richards; Timothy R. Elliott; Warren T. Jackson; Adrian Hal Thurstin; Rudy Vuchinich; Michael W. Wilson

2007-01-01T23:59:59.000Z

262

High-resolution flurescence spectroscopy in immunoanalysis  

SciTech Connect

The work presented in this dissertation combines highly sensitive and selective fluorescence line-narrowing spectroscopy (FLNS) detection with various modes of immunoanalytical techniques. It has been shown that FLNS is capable of directly probing molecules immunocomplexed with antibodies, eliminating analytical ambiguities that may arise from interferences that accompany traditional immunochemical techniques. Moreover, the utilization of highly cross-reactive antibodies for highly specific analyte determination has been demonstrated. Finally, they demonstrate the first example of the spectral resolution of diastereomeric analytes based on their interaction with a cross-reactive antibody.

Grubor, Nenad M.

2005-05-01T23:59:59.000Z

263

Resolution and Polarization Distribution in Cryogenic DNP/MAS Experiments  

E-Print Network (OSTI)

This contribution addresses four potential misconceptions associated with high-resolution dynamic nuclear polarization/magic angle spinning (DNP/MAS) experiments. First, spectral resolution is not generally compromised at ...

Barnes, Alexander

264

Predicting Performance Impacts due to Resolution Changes in Parallel Simulations  

Science Conference Proceedings (OSTI)

Multi-resolution models are often used to accelerate simulation-based analysis without significantly impacting the fidelity of the simulations. We have developed a web-enabled, component-based, multi-resolution modeling and Time Warp synchronized parallel ...

Dhananjai M. Rao; Philip A. Wilsey

2008-10-01T23:59:59.000Z

265

Applied high resolution digital control for universal precision systems  

E-Print Network (OSTI)

This thesis describes the design and characterization of a high-resolution analog interface for dSPACE digital control systems and a high-resolution, high-speed data acquisition and control system. These designs are intended ...

Gawlik, Aaron John

2008-01-01T23:59:59.000Z

266

Documentation of high resolution solar resource assessment (10km...  

Open Energy Info (EERE)

resolution solar resource assessment for China provided by DLR. The high resolution solar data (10kmx10km) provide country maps of the annual and monthly sums of hourly global...

267

Documentation of high resolution solar resource assessment (10km...  

Open Energy Info (EERE)

resolution solar resource assessment for Nepal provided by DLR. The high resolution solar data (10kmx10km) provide country maps of the annual and monthly sums of hourly global...

268

Documentation of high resolution solar resource assessment (10km...  

Open Energy Info (EERE)

resolution solar resource assessment for Kenya provided by DLR. The high resolution solar data (10kmx10km) provide country maps of the annual and monthly sums of hourly global...

269

Documentation of high resolution solar resource assessment for...  

Open Energy Info (EERE)

resolution solar resource assessment for Ghana provided by DLR. The high resolution solar data (10kmx10km) provide country maps of the annual and monthly sums of hourly global...

270

An Evaluation of Radiometric Products from Fixed-Depth and Continuous In-Water Profile Data from Moderately Complex Waters  

Science Conference Proceedings (OSTI)

Radiometric products determined from fixed-depth and continuous in-water profile data collected at a coastal site characterized by moderately complex waters were compared to investigate differences and limitations between the two measurement ...

Giuseppe Zibordi; Jean-François Berthon; Davide D’Alimonte

2009-01-01T23:59:59.000Z

271

Direct super-resolution and registration using raw CFA images  

Science Conference Proceedings (OSTI)

Super-resolution has been applied mainly to grayscale images, but producing a high-resolution color image using a single CCD sensor has not been investigated in detail until recently. This work aims at producing a high-resolution color image directly ...

Tomomasa Gotoh; Masatoshi Okutomi

2004-06-01T23:59:59.000Z

272

Layout impact of resolution enhancement techniques: impediment or opportunity?  

Science Conference Proceedings (OSTI)

This tutorial introduces the reader to the basic concepts of optical lithography, derives fundamental resolution limits, reviews the challenges facing future technology nodes, explains the principles of resolution enhancement techniques and their impact ... Keywords: design for manufacturability, lithography, radically restricted designs, resolution enhancement techniques

Lars W. Liebmann

2003-04-01T23:59:59.000Z

273

A process-driven tool to support online dispute resolution  

Science Conference Proceedings (OSTI)

This demonstration shows a prototype tool that projects an impression of how execution of a formally defined process will facilitate dispute resolution. Tool flexibility supports projecting the look and feel of a range of different processes, facilitating ... Keywords: dispute resolution, grievance mediation, online dispute resolution, participatory design, process, process technology, prototyping

Lori Clarke; Alan Gaitenby; Daniel Gyllstrom; Ethan Katsh; Matthew Marzilli; Leon J. Osterweil; Norman K. Sondheimer; Leah Wing; Alexander Wise; Daniel Rainey

2006-05-01T23:59:59.000Z

274

Unique microchannel plate process doubles MCPI resolution  

Science Conference Proceedings (OSTI)

Applying a dielectric layer to the output of a microchannel plate (MCP) has allowed the screen voltage of a sealed microchannel-plate intensifier tube (MCPI) to be raised to over 10 kV, producing a field strength of 36 kV/mm without any detectable field emission or breakdown of the MCP/screen gap. Tube resolution exceeded 16 lp/mm at 50% modulation. Breakdown is higher in a dielectric than in a vacuum. In a concept being patented by Gary Power, a few-{mu}m-thick layer of a dielectric was sputtered onto the output surface of an 18-mm MCP, which was incorporated into a tube under a contract for four tube starts. This process is applicable to any device incorporating a proximity-focused MCP and screen, including streak tubes and gated MCP x-ray imagers. Other improvements discussed include a patented use of a collimator for eliminating the electrons that are elastically scattered from the screen. This method also provides for further improvements in screen gap limited resolution to any desired degree by eliminating electrons with high transverse energy. This occurs at the expense of output brightness, which can be recovered through an appropriate increase in screen voltage.

Thomas, S.; Power, G.

1994-08-22T23:59:59.000Z

275

High-Resolution Scintimammography: A Pilot Study  

Science Conference Proceedings (OSTI)

This study evaluated a novel high-resolution breast-specific gamma camera (HRBGC) for the detection of suggestive breast lesions. Methods: Fifty patients (with 58 breast lesions) for whom a scintimammogram was clinically indicated were prospectively evaluated with a general-purpose gamma camera and a novel HRBGC prototype. The results of conventional and high-resolution nuclear studies were prospectively classified as negative (normal or benign) or positive (suggestive or malignant) by 2 radiologists who were unaware of the mammographic and histologic results. All of the included lesions were confirmed by pathology. Results: There were 30 benign and 28 malignant lesions. The sensitivity for detection of breast cancer was 64.3% (18/28) with the conventional camera and 78.6% (22/28) with the HRBGC. The specificity with both systems was 93.3% (28/30). For the 18 nonpalpable lesions, sensitivity was 55.5% (10/18) and 72.2% (13/18) with the general-purpose camera and the HRBGC, respectively. For lesions 1 cm, 7 of 15 were detected with the general-purpose camera and 10 of 15 with the HRBGC. Four lesions (median size, 8.5 mm) were detected only with the HRBGC and were missed by the conventional camera. Conclusion: Evaluation of indeterminate breast lesions with an HRBGC results in improved sensitivity for the detection of cancer, with greater improvement shown for nonpalpable and 1-cm lesions.

Rachel F. Brem; Joelle M. Schoonjans; Douglas A. Kieper; Stan Majewski; Steven Goodman; Cahid Civelek

2002-07-01T23:59:59.000Z

276

Reproductive and endocrine parameters of fat versus moderately conditioned mares following parturition  

E-Print Network (OSTI)

An increase in time to ovulation following parturition could result in economic loss if the mare cannot successfully conceive within a short time after foaling. To evaluate if a difference exists in reproductive efficiency of fat- (body condition score of 7 to 8) versus moderately-conditioned (body condition score of 5 to 6), 24 mares were allotted to and maintained in their respective group from late gestation until pregnancy was confirmed following breeding on the second post-partum estrus. Days to ovulation, interovulatory intervals, conception rates, and endocrine profiles were analyzed. Serum concentrations of thyroxine (T4), insulin-like growth factor-1 (IGF-1) and leptin were assayed in order to characterize normal circulating blood concentrations. There were no differences (P>0.05) in mean interval from parturition to first ovulation (14.41 ± 1.07 and 16.18 ± 1.06 d), first to second postpartum ovulation (22.91 ± 1.07 and 24.33 ± 0.93 d), or in conception rates (91.67% and 83.33%) between the 2 groups. However, mares in moderate conditioning did lose a greater percentage of body fat upon foaling as compared to fleshier mares (0.82% versus 0.35%). Leptin concentrations were not different between the groups (P>0.05). Nevertheless, serum concentrations of T4 were higher (P<0.01) and IGF-1 concentrations lower (P<0.01) in moderate- as compared to fat-conditioned mares during times of ovulation and the interovulatory period. Results indicate that mares maintained in a fleshy body condition are not prone to reproductive dysfunction or lowered levels of fertility. The significance of the current results is important as it reassures the breeder that mares in a fatter body condition score (BCS of 7-8) should not demonstrate sub-fertility related to level of body fat. Additionally, results indicate that mares may need to be kept in a BCS of 6 in order to avoid losing enough weight upon parturition and early lactation to bring the BCS below 5. It suggests that varying amounts of circulating T4 and IGF-1 do not affect reproductive capabilities of mares in a BCS of greater than 5 following parturition.

Cavinder, Clay Alan

2006-08-01T23:59:59.000Z

277

High resolution simulation of the South Asian monsoon using a variable4 resolution global climate model5  

E-Print Network (OSTI)

1 1 2 3 High resolution simulation of the South Asian monsoon using a variable4 resolution global of the South Asian monsoon rainfall distribution and the interactions27 between monsoon circulation of resolution on the overall quality of the simulated regional33 monsoon fields. It is found that the monsoon

Dufresne, Jean-Louis

278

EMatch: Discovery of High Resolution Structural Homologues of Protein Domains in Intermediate Resolution Cryo-EM Maps  

Science Conference Proceedings (OSTI)

Cryo-EM has become an increasingly powerful technique for elucidating the structure, dynamics, and function of large flexible macromolecule assemblies that cannot be determined at atomic resolution. However, due to the relatively low resolution of cryo-EM ... Keywords: Structural bioinformatics, intermediate resolution cryo-EM maps, 3D alignment of secondary structures, macromolecular assemblies, cyclic symmetry.

Keren Lasker; Oranit Dror; Maxim Shatsky; Ruth Nussinov; Haim J. Wolfson

2007-01-01T23:59:59.000Z

279

Remote sensing evaluation of CLM4 GPP for the period 2000 to 2009  

SciTech Connect

The ability of a process-based ecosystem model like Version 4 of the Community Land Model (CLM4) to provide accurate estimates of CO2 flux is a top priority for researchers, modelers and policy makers. Remote sensing can provide long-term and large scale products suitable for ecosystem model evaluation. Global estimations of gross primary production (GPP) at the 1 km spatial resolution from years 2000 to 2009 from the MODIS (Moderate Resolution Imaging Spectroradiometer) sensor offer a unique opportunity for evaluating the temporal and spatial patterns of global GPP and its relationship with climate for CLM4. We compare monthly GPP simulated by CLM4 at half-degree resolution with satellite estimates of GPP from the MODIS GPP (MOD17) dataset for the 10-yr period, January 2000 December 2009. The assessment is presented in terms of long-term mean carbon assimilation, seasonal mean distributions, amplitude and phase of the annual cycle, and intra-annual and inter-annual GPP variability and their responses to climate variables. For the long-term annual and seasonal means, major GPP patterns are clearly demonstrated by both products. Compared to the MODIS product, CLM4 overestimates the magnitude of GPP for tropical evergreen forests. CLM4 has longer carbon uptake period than MODIS for most plant functional types (PFTs) with an earlier onset of GPP in spring and later decline of GPP in autumn. Empirical Orthogonal Function (EOF) analysis of the monthly GPP changes indicates that on the intra-annual scale, both CLM4 and MODIS display similar spatial representations and temporal patterns for most terrestrial ecosystems except in northeast Russia and the very dry region in central Australia. For 2000-2009, CLM4 simulates increases in annual averaged GPP over both hemispheres, however estimates from MODIS suggest a reduction in the Southern Hemisphere (-0.2173 PgC/year) balancing the significant increase over the Northern Hemisphere (0.2157 PgC/year).

Mao, Jiafu [ORNL; Thornton, Peter E [ORNL; Shi, Xiaoying [ORNL; Zhao, Maosheng [ORNL; Post, Wilfred M [ORNL

2012-01-01T23:59:59.000Z

280

The Advection of High-Resolution Tracers by Low-Resolution Winds  

Science Conference Proceedings (OSTI)

The usefulness of any simulation of atmospheric tracers using low-resolution winds relies on both the dominance of large spatial scales in the strain and time dependence that results in a cascade in tracer scales. Here, a quantitative study on ...

John Methven; Brian Hoskins

1999-09-01T23:59:59.000Z

Note: This page contains sample records for the topic "modis moderate 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

Optimal fracture stimulation of a moderate-permeability reservoir; Kuparuk River Unit, Alaska  

SciTech Connect

Sixty-five percent of the reserves of the Kuparuk River field, the second-largest producing oil field in the U.S., is contained in a 20- 80-md-permeability sandstone. This paper provides details of stimulation design advances made over the past 3 years in this formation. The design steps for optimizing fracture treatments in a moderate-permeability formation require primary emphasis on fracture conductivity rather than on treatment size or fracture length. This philosophy was used for the 140 new wells documented in this paper. Treatment size was gradually increased once a commensurate increase in fracture conductivity was obtained. Applying the new design to the refracturing of 88 producing wells in the field resulted in an incremental 40,000 BOPD, a significant portion of the field's 300,000 BOPD.

Pearson, C.M.; Bond, A.J.; Eck, M.E.; Lynch, K.W. (Arco Alaska, Inc. (US))

1992-08-01T23:59:59.000Z

282

A SODIUM COOLED, GRAPHITE MODERATED, LOW ENRICHMENT URANIUM REACTOR FOR THE PRODUCTION OF USEFUL POWER  

SciTech Connect

A design study is presented for a sodium cooled, graphite moderated power reactor utilizing low enrichment uranium fuel. The design is characterized by dependence on existing technology and the use of standard, or nearly standard, components. The reactor has a nominal rating of 167 thermal megawatts, and a plant comprising three such reactors for a total output of 500 thermal megawatts is described. Sodium in a secondary, non-radioactive, circulation system carries the heat to a steam generator at 910 deg F and is returned at 420 deg F. Steam conditions at the turbine throttle are 600 psig and 825 deg F. Cost of the complete reactor power plant, consisting of the three reactors and one 150- megawatt turbogenerator, is estimated to be approximately ,165,000. (auth)

Weisner, E.F. ed.

1954-09-15T23:59:59.000Z

283

STORED ENERGY: GROWTH AND ANNEALING STATUS OF GRAPHITE MODERATOR IN THE BNL RESEARCH REACTOR. Final Report  

SciTech Connect

The present sthtus, past annealing procedures and experiences, future annealing procedures, annealing sehedule, revised annealing procedure (1958), procedure for combating a graphite fire in fuel channel, high-temperature stored energy, and graphite burning experiments are reportcd for the BNL Research Reactor. The following subjccts are discussed in the appendixes: control of radiation damage in a graphitc reactor; annealing of graphite moderator structure in the BNL; annealing operation in BNL graphite reactor; effect of pile radiation on mechanical and other properties of graphite; neutron sensing instrumentation; instrumentation for sensing fuel failures; thermocouple pattern for enriched fuel loading; environmental hazard from a molten fuel element; retention of volatile flssion products on filters; retention of volatile fission products on water tube coolers; retention of volatile fission products in molten fuel plates; and release of the lowtemperature stored energy in the BEPO Pile. (W.L.H.)

1959-10-31T23:59:59.000Z

284

Ultra-high resolution computed tomography imaging  

DOE Patents (OSTI)

A method for ultra-high resolution computed tomography imaging, comprising the steps of: focusing a high energy particle beam, for example x-rays or gamma-rays, onto a target object; acquiring a 2-dimensional projection data set representative of the target object; generating a corrected projection data set by applying a deconvolution algorithm, having an experimentally determined a transfer function, to the 2-dimensional data set; storing the corrected projection data set; incrementally rotating the target object through an angle of approximately 180.degree., and after each the incremental rotation, repeating the radiating, acquiring, generating and storing steps; and, after the rotating step, applying a cone-beam algorithm, for example a modified tomographic reconstruction algorithm, to the corrected projection data sets to generate a 3-dimensional image. The size of the spot focus of the beam is reduced to not greater than approximately 1 micron, and even to not greater than approximately 0.5 microns.

Paulus, Michael J. (Knoxville, TN); Sari-Sarraf, Hamed (Knoxville, TN); Tobin, Jr., Kenneth William (Harriman, TN); Gleason, Shaun S. (Knoxville, TN); Thomas, Jr., Clarence E. (Knoxville, TN)

2002-01-01T23:59:59.000Z

285

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

286

HEAVY-WATER-MODERATED POWER REACTORS ENGINEERING AND ECONOMIC EVALUATIONS. VOLUME II. ENGINEERING STUDIES AND TECHNICAL DATA  

SciTech Connect

The results of preliminary design and evaluation studies of various concepts of a power reactor that is moderated by heavy water and fueled with natural uranium are presented. Twenty-nine conceptal designs were developed for reactors ranging in capacity from 100 Mwe to 460 Mwe. Resigns were prepared for hot- and cold-moderator reac tors of the pressure vessel type, with liquid D/sub 2/O, boiling D/sub 2/O, E/sub 2/O steam, and helium as coolants. Also studied were cold-moderator pressure tube reactors cooled with liquid D/sub 2/O and boiling D/sub 2/O. The repont includes the results of engineering studies of the reactor systems, electrical generation facilities, and auxiliary equipment. (auth)

1960-12-01T23:59:59.000Z

287

Adequacy of the 123-group cross-section library for criticality analyses of water-moderated uranium systems  

SciTech Connect

In a recent criticality analysis for an array of water-moderated packages containing highly enriched uranium, the 123-group cross-section library in the SCALE system was observed to have a nonconservative discrepancy of approximately 3 to 3.5% when compared with more recently developed libraries. A simple representative system of UO{sub 2}F{sub 2}-H{sub 2}O was used to identify that the problem results from a lack of resonance data for {sup 235}U. Only a single set of self-shielded cross sections, most likely corresponding to a water-moderated infinite dilute system, was provided with the original data. The UO{sub 2}F{sub 2}-H{sub 2}O study indicates that this limitation may cause nonconservative discrepancies as high as 5.5% for some water-moderated, highly enriched uranium systems. Characteristics of the systems where the discrepancy is evident are identified and discussed.

Parks, C.V.; Wright, R.Q.; Jordan, W.C. [Oak Ridge National Lab., TN (United States)

1995-08-01T23:59:59.000Z

288

Monte Carlo calculations of the effective area and directional response of a polyethylene-moderated neutron counter  

Science Conference Proceedings (OSTI)

Two recent reports on Monte Carlo studies have examined the angular response of a multiple-rod neutron scintillator and the energy response of a moderated {sup 3}He neutron counter. This report extends those studies to provide calculations of the effective area and angular sensitivity of a polyethylene-moderated neutron detector that has multiple {sup 3}He tubes. The results (1) provide a more accurate and general determination of the sensor`s detection efficiency, (2) suggest new techniques for obtaining information about the source direction, and (3) allow evaluation of proposals to improve the high-energy detection efficiency by using the production of (n,2n) neutrons in high-density material added to the moderator.

Not Available

1995-01-01T23:59:59.000Z

289

Actinide destruction and power peaking analysis in a 1000 MWt advanced burner reactor using moderated heterogeneous target assemblies  

SciTech Connect

The purpose of this research was to determine the effect of moderated heterogeneous subassemblies located in the core of a sodium-cooled fast reactor on minor actinide (MA) destruction rates over the lifecycle of the core. Additionally, particular emphasis was placed on the power peaking of the pins and the assemblies with the moderated targets as compared to standard unmoderated heterogeneous targets and a core without MA targets present. Power peaking analysis was performed on the target assemblies and on the fuel assemblies adjacent to the targets. The moderated subassemblies had a marked improvement in the overall destruction of heavy metals in the targets. The design with acceptable power peaking results had a 12.25% greater destruction of heavy metals than a similar ex-core unmoderated assembly. The increase in minor actinide destruction was most evident with americium where the moderated assemblies reduced the initial amount to less than 3% of the initial loading over a period of five years core residency. In order to take advantage of the high minor actinide destruction and minimize the power peaking effects, a hybrid scenario was devised where the targets resided ex-core in a moderated assembly for the first 506.9 effective full power days (EFPDs) and were moved to an in-core arrangement with the moderated targets removed for the remainder of the lifecycle. The hybrid model had an assembly and pin power peaking of less than 2.0 and a higher heavy metal and minor actinide destruction rate than the standard unmoderated heterogeneous targets either in-core or ex-core. The hybrid model has a 54.5% greater Am reduction over the standard ex-core model. It also had a 27.8% greater production of Cm and a 41.5% greater production of Pu than the standard ex-core model. The radiotoxicity of the targets in the hybrid design was 20% less than the discharged standard ex-core targets.

Kenneth Allen; Travis Knight; Samuel Bays

2011-05-01T23:59:59.000Z

290

2 x 2 Polyethylene Reflected and Moderated Highly Enriched Uranium System with Rhenium  

SciTech Connect

The 2 × 2 array HEU-Re experiment was performed on the Planet universal critical assembly machine on November 4th, 2003 at the Los Alamos Critical Experiments Facility (LACEF) at Los Alamos National Laboratory (LANL). For this experiment, there were 10 ½ units, each full unit containing four HEU foils and two rhenium foils. The top unit contained only two HEU foils and two rhenium foils. A total of 42 HEU foils were used for this experiment. Rhenium is a desirable cladding material for space nuclear power applications. This experiment consisted of HEU foils interleaved with rhenium foils and is moderated and reflected by polyethylene plates. A unit consisted of a polyethylene plate, which has a recess for rhenium foils, and four HEU foils in a single layer in the top recess of each polyethylene plate. The Planet universal criticality assembly machine has been previously used in experiments containing HEU foils interspersed with SiO2 (HEU-MET-THERM-001), Al (HEU-MET-THERM-008), MgO (HEU-MET-THERM-009), Gd foils (HEU-MET-THERM-010), 2 × 2 × 26 Al (HEU-MET-THERM-012), Fe (HEU-MET-THERM-013 and HEU-MET-THERM-015), 2 × 2 × 23 SiO2 (HEU-MET-THERM-014), 2 × 2 × 11 hastalloy plates (HEU-MET-THERM-016), and concrete (HEU-MET-THERM-018). The 2 × 2 array of HEU-Re is considered acceptable for use as a benchmark critical experiment.

A. Nichole Ellis; Jesson Hutchinson; John D. Bess; Dmitry N. Polyakov; Evgeny S. Glushkov; Alexey E. Glushkov

2010-09-01T23:59:59.000Z

291

Analysis of binary thermodynamic cycles for a moderately low-temperature geothermal resource  

DOE Green Energy (OSTI)

Analyses of a number of geothermal binary-cycles were made with the objective of finding a cycle which can produce low-cost electrical energy from a moderately low-temperature geothermal resource. Cycles were screened which included isobutane, pentane, cis-2-butene, and several mixed-hydrocarbon working fluids. Dual- and triple-boiling cycles were analyzed. Both shell-and-tube and direct-contact boilers, heaters, and condensers were assessed. A geothermal fluid (geo-fluid), typical of Raft River resource conditions was assumed, which has a temperature of 290/sup 0/F and 52 parts per million dissolved nitrogen. Special emphasis in the analyses was directed toward investigation of several methods for keeping the loss of working fluid for the cycle at an acceptable level. It was concluded that for the Raft River geo-fluid, the direct-contact cycle has a potential for net geofluid utilization effectiveness values, (watt-hr/lbm geo-fluid) equivalent to those of the shell-and-tube cycle. Therefore, because of the lower cost of direct-contact components, a potential exists for the direct-contact plant to produce lower cost electrical energy than a comparable shell-and-tube plant. Advanced cycles were assessed which showed improvements in net geo-fluid utilization effectivness, relative to the first Raft River 5-MW Pilot Plant (dual-boiling, shell-and-tube isobutane cycle), of up to 19%.

Demuth, O.J.

1979-07-01T23:59:59.000Z

292

Cooling by Heat Conduction Inside Magnetic Flux Loops and the Moderate Cluster Cooling Flow Model  

E-Print Network (OSTI)

I study non-radiative cooling of X-ray emitting gas via heat conduction along magnetic field lines inside magnetic flux loops in cooling flow clusters of galaxies. I find that such heat conduction can reduce the fraction of energy radiated in the X-ray band by a factor of 1.5-2. This non-radiative cooling joins two other proposed non-radiative cooling processes, which can be more efficient. These are mixing of cold and hot gas, and heat conduction initiated by magnetic fields reconnection between hot and cold gas. These processes when incorporated into the moderate cooling flow model lead to a general cooling flow model with the following ingredients. (1) Cooling flow does occur, but with a mass cooling rate about 10 times lower than in old versions of the cooling flow model. Namely, heating occurs such that the effective age of the cooling flow is much below the cluster age, but the heating can't prevent cooling altogether. (2) The cooling flow region is in a non-steady state evolution. (3) Non-radiative cooling of X-ray emitting gas can bring the model to a much better agreement with observations. (4) The general behavior of the cooling flow gas, and in particular the role played by magnetic fields, make the intracluster medium in cooling flow clusters similar in some aspects to the active solar corona.

Noam Soker

2003-11-02T23:59:59.000Z

293

A graphite-moderated pulsed spallation ultra-cold neutron source  

E-Print Network (OSTI)

Proposals exist and efforts are under way to construct pulsed spallation ultra-cold neutron (UCN) sources at accelerator laboratories around the world. At the Paul Scherrer Institut (PSI), Switzerland, and at the Los Alamos National Laboratory (LANL), U.S.A., it is planned to use solid deuterium (SD_2) for the UCN production from cold neutrons. The philosophies about how the cold neutrons are obtained are quite different, though. The present proposal describes a third approach which applies a temperature optimized graphite moderator in combination with the SD_2 and qualitatively combines advantages of the different schemes. The scheme described here allows to build a powerful UCN source. Assuming a pulsed 2 mA, 590 MeV proton beam with an average current of 10 microA, one obtains UCN densities in excess of 2000 cm^{-3}, UCN fluxes of about 10^6 cm^{-2} s^{-1}, and total numbers of UCN in excess of 2*10^9 every 800 s.

Klaus Kirch

2001-09-05T23:59:59.000Z

294

Brazil-nut effect versus reverse Brazil-nut effect in a moderately dense granular fluid  

E-Print Network (OSTI)

A new segregation criterion based on the inelastic Enskog kinetic equation is derived to show the transition between the Brazil-nut effect (BNE) and the reverse Brazil-nut effect (RBNE) by varying the different parameters of the system. In contrast to previous theoretical attempts the approach is not limited to the near-elastic case, takes into account the influence of both thermal gradients and gravity and applies for moderate densities. The form of the phase-diagrams for the BNE/RBNE transition depends sensitively on the value of gravity relative to the thermal gradient, so that it is possible to switch between both states for given values of the mass and size ratios, the coefficients of restitution and the solid volume fraction. In particular, the influence of collisional dissipation on segregation becomes more important when the thermal gradient dominates over gravity than in the opposite limit. The present analysis extends previous results derived in the dilute limit case and is consistent with the findings of some recent experimental results.

Vicente Garzo

2008-03-18T23:59:59.000Z

295

Development of Probabilistic Design Basis Earthquake (DBE) Parameters for Moderate and High Hazard Facilities at INEEL  

SciTech Connect

Design Basis Earthquake (DBE) horizontal and vertical response spectra are developed for moderate and high hazard facilities or Performance Categories (PC) 3 and 4, respectively, at the Idaho National Engineering and Environmental Laboratory (INEEL). The probabilistic DBE response spectra will replace the deterministic DBE response spectra currently in the U.S. Department of Energy Idaho Operations Office (DOE-ID) Architectural Engineering Standards that govern seismic design criteria for several facility areas at the INEEL. Probabilistic DBE response spectra are recommended to DOE Naval Reactors for use at the Naval Reactor Facility at INEEL. The site-specific Uniform Hazard Spectra (UHS) developed by URS Greiner Woodward Clyde Federal Services are used as the basis for developing the DBE response spectra. In 1999, the UHS for all INEEL facility areas were recomputed using more appropriate attenuation relationships for the Basin and Range province. The revised UHS have lower ground motions than those produced in the 1996 INEEL site-wide probabilistic ground motion study. The DBE response spectra were developed by incorporating smoothed broadened regions of the peak accelerations, velocities, and displacements defined by the site-specific UHS. Portions of the DBE response spectra were adjusted to ensure conservatism for the structural design process.

S. M. Payne; V. W. Gorman; S. A. Jensen; M. E. Nitzel; M. J. Russell; R. P. Smith

2000-03-01T23:59:59.000Z

296

Exposure characteristics of high?resolution negative resists  

Science Conference Proceedings (OSTI)

Positive and negative resist systems are both essential in the microfabrication of experimental devices. While numerous positive resists have been shown to have high?resolution

Kaolin Grace Chiong; Shalom Wind; David Seeger

1990-01-01T23:59:59.000Z

297

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

Open Energy Info (EERE)

Of High-Resolution Thermal Infrared Sensors For Geothermal Exploration At The Salton Sea, California Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Conference...

298

High Resolution Solar Energy Resource Assessment within the UNEP...  

Open Energy Info (EERE)

High Resolution Solar Energy Resource Assessment within the UNEP Project SWERA

(Abstract):  To expand the world wide use of renewable energy a consistent,...

299

Ex-Situ High Resolution NMR and MRI - Lawrence Berkeley ...  

Alexander Pines and colleagues have opened the way to high resolution ex situ nuclear magnetic resonance (NMR) and magnetic resonance imaging (MRI).

300

Atomic-resolution Chemical Analysis by Aberration-corrected ...  

Science Conference Proceedings (OSTI)

In fact, it is possible to analyze materials in the atomic resolution since both the ... State-of-the-art strain Microscopy for Ferroelectrics and Battery Materials.

Note: This page contains sample records for the topic "modis moderate 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

Minimally invasive diagnostic imaging using high resolution Optical Coherence Tomography  

E-Print Network (OSTI)

Advances in medical imaging have given researchers unprecedented capabilities to visualize, characterize and understand biological systems. Optical Coherence Tomography (OCT) is a high speed, high resolution imaging technique ...

Herz, Paul Richard, 1972-

2004-01-01T23:59:59.000Z

302

Merging High Resolution Geophysical and Geochemical Surveys to...  

Open Energy Info (EERE)

This program will combine detailed gravity, high resolution aeromagnetic, and LIDAR data, all of which will be combined for structural modeling, with hyperspectral data,...

303

Cloud properties derived from the High Spectral Resolution Lidar...  

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

Cloud properties derived from the High Spectral Resolution Lidar during MPACE Eloranta, Edwin University of Wisconsin Category: Field Campaigns Cloud properties were derived from...

304

1  

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

Assessment of Albedo Derived from Moderate- Assessment of Albedo Derived from Moderate- Resolution Imaging Spectroradiometer at the Southern Great Plains Site C. Schaaf, A. Strahler, J. Salomon, M. Roman, J. Hodges, and J. Liu Department of Geography/Center for Remote Sensing Boston University Boston, Massachusetts Summary The moderate-resolution imaging spectroradiometer (MODIS) bidirectional reflectance distribution function (BRDF)/Albedo product (Schaaf et al. 2002; Lucht et al. 2000) has been produced at 1 km resolution from Terra since March 2000 and as a combined product from Aqua and Terra since July 2002. The retrieval algorithm uses multi-spectral, atmospherically corrected, cloud-free surface reflectances over a 16-day period with a semi-empirical kernel-driven BRDF model to characterize the

305

Iterative Collision Resolution in Wireless Networks  

E-Print Network (OSTI)

With the growing popularity of smart phones and tablets, development of multimedia applications is on the rise. Speedy transmission of this massive amount information is already pushing the limits of the capacity of wireless networks, and in upcoming years wireless data traffic is projected to continue increasing dramatically. Advances in wireless network throughput are necessary to keep up with society’s data demands. In an uncoordinated wireless communications system, transmissions collide and interfere as multiple users transmit data to a central receiver. Slotted-ALOHA, the conventional method that schedules user transmissions, has only 37% throughput efficiency. However, theoretical results in recent studies suggest that scheduling transmissions over a number of random, fixed timeslots and employing iterative collision resolution techniques achieves optimal throughput efficiency of approximately 100%. This research considers how real-world conditions affect these theoretical results. A MATLAB model was developed create random graphs, representing users transmitting packets over such timeslots, and the packets were resolved by this method. This model was simulated extensively, representing networks of up to 10,000 users over 10,000 to 15,000 timeslots, and the number of packets resolved in each iteration was measured. These simulations have generated empirical data that backs up the theoretical claim. The distribution of the number of packets resolved also led to modifications of the current model to increase the percentage of packets resolved in each iteration. Furthermore, by investigating low density parity check coding techniques, other modifications to the current model can optimize the throughput over several consecutive transmissions where unresolved packets are resent with higher probability of recovery. These results demonstrate the potential of this method in handling uncoordinated transmissions in communications systems, even in the presence of finite conditions. This suggests that this method could eventually be employed in actual wireless systems.

Stuckman, Katherine Christine

2013-05-01T23:59:59.000Z

306

High Resolution River Hydraulic and Water Quality Characterization Using Rapidly Deployable Networked Infomechanical Systems (NIMS RD)  

E-Print Network (OSTI)

High Resolution River Hydraulic and Water Quality1594. High Resolution River Hydraulic and Water Qualityobserving spatiotemporal hydraulic and chemical properties

Thomas C. Harmon; Richard F. Ambrose; Robert M. Gilbert; Jason C. Fisher; Michael Stealey; William J. Kaiser

2006-01-01T23:59:59.000Z

307

Note: Finding a tree structure in a resolution proof is NP-complete  

Science Conference Proceedings (OSTI)

The resolution tree problem consists of deciding whether a given sequence-like resolution refutation admits a tree structure. This paper shows the NP-completeness of both the resolution tree problem and a natural generalization of the resolution tree ... Keywords: NP-completeness, Resolution, Tree-like resolution

Jan Hoffmann

2009-05-01T23:59:59.000Z

308

Resource investigation of low- and moderate-temperature geothermal areas in San Bernardino, California  

SciTech Connect

The California Division of Mines and Geology (CDMG) selected the San Bernardino area for detailed geothermal resource investigation because the area was known to contain promising geothermal resource sites, the area contained a large population center, and the City of San Bernardino had expressed serious interest in developing the area's geothermal resource. Ninety-seven geothermal wells and springs were identified and plotted on a compiled geologic map of the 40-square-mile study area. These wells and springs were concentrated in three distinguishable resource areas: Arrowhead Hot Springs, South San Bernardino, and Harlem Hot Springs--in each of which detailed geophysical, geochemical, and geological surveys were conducted. The Arrowhead Hot Springs geothermal area lies just north of the City of San Bernardino in the San Bernardino Mountains astride a shear zone (offshoot of the San Andreas fault) in pre-Cambrian gneiss and schist. The Harlem Hot Springs geothermal area, on the east side of the City, and the South San Bernardino geothermal area, on the south side, have geothermal reservoirs in Quaternary alluvial material which overlies a moderately deep sedimentary basin bound on the southwest by the San Jacinto fault (a ground water barrier). Geothermometry calculations suggest that the Arrowhead Hot Springs geothermal area, with a maximum reservoir temperature of 142 C, may have the highest maximum reservoir temperature of the three geothermal areas. The maximum temperature recorded by CDMG in the South San Bernardino geothermal area was 56 C from an artesian well, while the maximum temperature recorded in the Harlem Hot Springs geothermal areas was 49.5 C at 174 meters (570 feet) in an abandoned water well.

Youngs, Leslie G.

1982-07-01T23:59:59.000Z

309

Cyclone Tracking in Different Spatial and Temporal Resolutions  

Science Conference Proceedings (OSTI)

The quality of cyclone tracks associated with model output of various resolutions is determined using a high-resolution dataset (1.125° × 1.125°, 2 h) mapped to different spatial (triangular truncations, T21, T42, T63, T84) and temporal ...

R. Blender; M. Schubert

2000-02-01T23:59:59.000Z

310

Intercomparison of High-Resolution Precipitation Products over Northwest Europe  

Science Conference Proceedings (OSTI)

Satellite-derived high-resolution precipitation products (HRPP) have been developed to address the needs of the user community and are now available with 0.25° × 0.25° (or less) subdaily resolutions. This paper evaluates a number of commonly ...

C. Kidd; P. Bauer; J. Turk; G. J. Huffman; R. Joyce; K.-L. Hsu; D. Braithwaite

2012-02-01T23:59:59.000Z

311

Fast high-resolution appearance editing using superimposed projections  

Science Conference Proceedings (OSTI)

We present a system that superimposes multiple projections onto an object of arbitrary shape and color to produce high-resolution appearance changes. Our system produces appearances at an improved resolution compared to prior works and can change appearances ... Keywords: Appearance editing, compensation, light transport, multi-projector, optimization

Daniel G. Aliaga; Yu Hong Yeung; Alvin Law; Behzad Sajadi; Aditi Majumder

2012-04-01T23:59:59.000Z

312

Does increasing model stratospheric resolution improve extended range forecast skill?  

E-Print Network (OSTI)

Does increasing model stratospheric resolution improve extended range forecast skill? Greg Roff,1 forecast skill at high Southern latitudes is explored. Ensemble forecasts are made for two model configurations that differ only in vertical resolution above 100 hPa. An ensemble of twelve 30day forecasts

313

High Resolution Aerosol Modeling: Decadal Changes in Radiative Forcing  

Science Conference Proceedings (OSTI)

The Atmospheric Science Division of LLNL has performed high-resolution calculations of direct sulfate forcing using a DOE-provided computer resource at NERSC. We integrated our global chemistry-aerosol model (IMPACT) with the LLNL high-resolution global climate model (horizontal resolution as high as 100 km) to examine the temporal evolution of sulfate forcing since 1950. We note that all previous assessments of sulfate forcing reported in IPCC (2001) were based on global models with coarse spatial resolutions ({approx} 300 km or even coarser). However, the short lifetime of aerosols ({approx} days) results in large spatial and temporal variations of radiative forcing by sulfate. As a result, global climate models with coarse resolutions do not accurately simulate sulfate forcing on regional scales. It requires much finer spatial resolutions in order to address the effects of regional anthropogenic SO{sub 2} emissions on the global atmosphere as well as the effects of long-range transport of sulfate aerosols on the regional climate forcing. By taking advantage of the tera-scale computer resources at NERSC, we simulated the historic direct sulfate forcing at much finer spatial resolutions than ever attempted before. Furthermore, we performed high-resolution chemistry simulations and saved monthly averaged oxidant fields, which will be used in subsequent simulations of sulfate aerosol formation and their radiative impact.

Bergmann, D J; Chuang, C C; Govindasamy, B; Cameron-Smith, P J; Rotman, D A

2005-02-01T23:59:59.000Z

314

A low power, variable resolution two-step flash ADC  

Science Conference Proceedings (OSTI)

In this paper, a new low power and configurable resolution two step flash ADC is proposed. Comparators of conventional flash ADC are replaced with CMOS inverters whose threshold can be varied dynamically. A novel peak-detector circuit is employed to ... Keywords: low power, two-step flash ADC, variable resolution

Mahesh Kumar Adimulam; Krishna Kumar Movva; Sreehari Veeramachaneni; N. Moorthy Muthukrishnan; M. B. Srinivas

2010-05-01T23:59:59.000Z

315

FY 2012 USED FUEL DISPOSITION CAMPAIGN TRANSPORTATION TASK REPORT ON INL EFFORTS SUPPORTING THE MODERATOR EXCLUSION CONCEPT AND STANDARDIZED TRANSPORTATION  

SciTech Connect

Following the defunding of the Yucca Mountain Project, it is reasonable to assume that commercial used fuel will remain in storage for a longer time period than initially assumed. Previous transportation task work in FY 2011, under the Department of Energy’s Office of Nuclear Energy, Used Fuel Disposition Campaign, proposed an alternative for safely transporting used fuel regardless of the structural integrity of the used fuel, baskets, poisons, or storage canisters after an extended period of storage. This alternative assures criticality safety during transportation by implementing a concept that achieves moderator exclusion (no in-leakage of moderator into the used fuel cavity). By relying upon a component inside of the transportation cask that provides a watertight function, a strong argument can be made that moderator intrusion is not credible and should not be a required assumption for criticality evaluations during normal or hypothetical accident conditions of transportation. This Transportation Task report addresses the assigned FY 2012 work that supports the proposed moderator exclusion concept as well as a standardized transportation system. The two tasks assigned were to (1) promote the proposed moderator exclusion concept to both regulatory and nuclear industry audiences and (2) advance specific technical issues in order to improve American Society of Mechanical Engineers Boiler and Pressure Vessel Code, Section III, Division 3 rules for storage and transportation containments. The common point behind both of the assigned tasks is to provide more options that can be used to resolve current issues being debated regarding the future transportation of used fuel after extended storage.

D. K. Morton

2012-08-01T23:59:59.000Z

316

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

317

Application of Precision Mechanical Engineering Techniques to the Design of a Moderate Energy Beam Transport for the FAA Explosive Detection System  

E-Print Network (OSTI)

Application of Precision Mechanical Engineering Techniques to the Design of a Moderate Energy Beam Transport for the FAA Explosive Detection System

Lujan, R

1993-01-01T23:59:59.000Z

318

Preliminary analysis of gain measurements at the HFBR liquid hydrogen moderator  

DOE Green Energy (OSTI)

The High Flux Beam Reactor (HFBR) is a 60 MW steady state neutron source. As part of the facility a cold neutron source is included in one of the beam tubes (H-9). The arrangement of this source is shown in Figure 1, which shows the reactor core, beam tube H-9, and the cold source with its attached helium cooling lines and hydrogen feed lines. The liquid hydrogen chamber is in the shape of an oblate spheroid and has a volume of 1.466 liters, and an aspect ratio of 1:3. Aluminum is used as the material of construction. The wall thickness of the chamber varies, with the thinnest value being on the flatter parts of the oblate spheroid. This design minimizes the amount of metal in the direction of the neutron beam of interest. Gain is defined as the ratio of the flux at a specific wave length leaking from the front face of the cold source, with and without the liquid hydrogen present. Measurements of the gain were made at several wavelength for the HFBR cold source. The change in the neutron spectrum at a particular wave length is a strong function of the scattering kernel of the moderator. Thus, these measurements can be used as integral data to validate calculational models and scattering kernel data for liquid hydrogen, and shed light on the actual mixture of ortho/para hydrogen in the cold source. Two scattering kernels for each of the states of liquid hydrogen (ortho and para) were available at the beginning of the study. The total scattering cross section for each of these are shown. The two ortho kernels are seen to be quite similar. However, in the case of para-hydrogen there is seen to be a significant difference between the two cross sections at lower energies or longer wavelengths. This difference implies a similar difference in the scattering kernel. In the following analysis both para-hydrogen kernels and only one ortho-hydrogen kernel will be used. In addition, a free proton gas kernel (no molecular binding) will be used for comparison purposes.

Ludewig, H.; Aronson, A.; Todosow, M.; Passell, L.; Wildgruber, U.

1998-05-01T23:59:59.000Z

319

Development of a Safeguards Approach for a Small Graphite Moderated Reactor and Associated Fuel Cycle Facilities  

E-Print Network (OSTI)

Small graphite-moderated and gas-cooled reactors have been around since the beginning of the atomic age. Though their existence in the past has been associated with nuclear weapons programs, they are capable of being used in civilian power programs. The simpler design constraints associated with this type of reactor would make them ideal for developing nations to bolster their electricity generation and help promote a greater standard of living in those nations. However, the same benefits that make this type of reactor desirable also make it suspicious to the international community as a possible means to shorten that state?s nuclear latency. If a safeguards approach could be developed for a fuel cycle featuring one of these reactors, it would ease the tension surrounding their existence and possibly lead to an increased latency through engineered barriers. The development of this safeguards approach follows a six step procedure. First, the fuel cycle was analyzed for the types of facilities found in it and how nuclear material flows between facilities. The goals of the safeguards system were established next, using the normal IAEA standards for the non-detection and false alarm probabilities. The 5 MWe Reactor was modeled for both plutonium production and maximum power capacity. Each facility was analyzed for material throughput and the processes that occur in each facility were researched. Through those processes, diversion pathways were developed to test the proposed safeguards system. Finally, each facility was divided into material balance areas and a traditional nuclear material accountancy system was set up to meet the established safeguards goals for the facility. The DPRK weapons program is a great example of the type of fuel cycle that is the problem. The three major facilities in the fuel cycle, the Fuel Fabrication Facility, the 5 MWe Reactor, and the Radiochemical Laboratory, can achieve the two goals of safeguards using traditional methods. Each facility can be adequately safeguarded using methods and practices that are relatively inexpensive and can obtain material balance periods close to the timeliness limits set forth by the IAEA. The Fuel Fabrication Facility can be safeguarded at both its current needed capacity and its full design capacity using inexpensive measurements. The material balance period needed for both capacities are reasonable. For the 5 MWe reactor, plutonium production is simulated to be 6.7 kg per year and is on the high side of estimates. The Radiochemical Laboratory can also be safeguarded at its current capacity. In fact, the timeliness goal for the facility dictates what the material balance period must be for the chosen set of detectors which make it very reasonable.

Rauch, Eric B.

2009-05-01T23:59:59.000Z

320

Inverse Kriging to Enhance Spatial Resolution of Imagery  

Science Conference Proceedings (OSTI)

We describe a unique approach to image resolution enhancement, inverse kriging (IK), which takes advantage of the spatial relationship between high- and low-resolution images within an area of overlap. Once established, this mathematical relationship then can be applied across the entire low-resolution image to significantly sharpen the image. The mathematical relationship uses the spatial correlations within the low-resolution image and between the low and high spatial-resolution imagery. Two of the most important requirements of the technique are that the images be co-registered well within the resolution of the larger pixels and that the spatial structure of the training area (where the spatial correlation statistics are compared) is similar to the structure of the remaining image area where it will be applied. Testing was performed using same-sensor and multi-sensor imagery. We show results that indicate that the method does improve the low spatial-resolution imagery. The selection of a training area spatial structure similar to the area being processed is important, as areas with different spatial structure (e.g., vegetation versus buildings and roads) will produce poor results. Comparisons with bilinear interpolation demonstrate that IK could be used as an improved interpolation tool, for example, in the image-registration process.

Petrie, Gregg M. (BATTELLE (PACIFIC NW LAB)); Heasler, Patrick G. (BATTELLE (PACIFIC NW LAB)); Perry, Eileen M. (BATTELLE (PACIFIC NW LAB)); Thompson, Sandra E. (BATTELLE (PACIFIC NW LAB)); Daly, Don S. (BATTELLE (PACIFIC NW LAB))

2002-12-15T23:59:59.000Z

Note: This page contains sample records for the topic "modis moderate 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

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 measured, while the low-resolution data are pervasive, but less accurate or less precise. Combining the two datasets could supposedly make a better prediction of the geometric surface of a manufactured part than using a single dataset. One challenge in combining the metrology datasets is the misalignment which exists between the low- and high-resolution data points. This dissertation attempts to provide a Bayesian hierarchical model that can handle such misaligned datasets, and includes the following components: (a) a Gaussian process for modeling metrology data at the low-resolution level; (b) a heuristic matching and alignment method that produces a pool of candidate matches and transformations between the two datasets; (c) a linkage model, conditioned on a given match and its associated transformation, that connects a high-resolution data point to a set of low-resolution data points in its neighborhood and makes a combined prediction; and finally (d) Bayesian model averaging of the predictive models in (c) over the pool of candidate matches found in (b). This Bayesian model averaging procedure assigns weights to different matches according to how much they support the observed data, and then produces the final combined prediction of the surface based on the data of both resolutions. The proposed method improves upon the methods of using a single dataset as well as a combined prediction without addressing the misalignment problem. This dissertation demonstrates the improvements over alternative methods using both simulated data and the datasets from a milled sine-wave part, measured by two coordinate measuring machines of different resolutions, respectively.

Xia, Haifeng

2008-12-01T23:59:59.000Z

322

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

323

High intrinsic energy resolution photon number resolving detectors  

E-Print Network (OSTI)

Transition Edge Sensors (TESs) are characterized by the intrinsic figure of merit to resolve both the energy and the statistical distribution of the incident photons. These properties lead TES devices to become the best single photon detector for quantum technology experiments. For a TES based on titanium and gold has been reached, at telecommunication wavelength, an unprecedented intrinsic energy resolution (0.113 eV). The uncertainties analysis of both energy resolution and photon state assignment has been discussed. The thermal properties of the superconductive device have been studied by fitting the bias curve to evaluate theoretical limit of the energy resolution.

L. Lolli; E. Taralli; C. Portesi; E. Monticone; M. Rajteri

2013-06-23T23:59:59.000Z

324

Gas-cooled, Li/sub 2/O moderator/breeder canister blanket for fusion-synfuels  

DOE Green Energy (OSTI)

A new integrated power and breeding blanket is described. The blanket incorporates features that make it suitable for synthetic fuel production. It is matched to the thermal and electrical requirements of the General atomic water-splitting process for producing hydrogen. The fusion reaction is the Tandem Mirror Reactor (TMR) using Mirror Advanced Reactor Study (MARS) physics. The canister blanket is a high temperature, pressure balanced, cross-flow heat exchanger contained within a low activity, independently cooled, moderate temperature, first wall structural envelope. The canister uses Li/sub 2/O as the moderator/breeder and helium as the coolant. In situ tritium control, combined with slip stream processing and self-healing permeation barriers, assures a hydrogen product essentially free of tritium. The blanket is particularly adapted to synfuels production but is equally useful for electricity production or co-generation.

Werner, R.W.; Hoffman, M.A.

1983-03-24T23:59:59.000Z

325

CIVILIAN POWER REACTOR PROGRAM. PART II. ECONOMIC POTENTIAL AND DEVELOPMENT PROGRAM. HEAVY WATER-MODERATED POWER REACTOR  

SciTech Connect

The reactor design which forms the base for the current economic status of D/sub 2/O-moderated reactors was estimated from developments in several reactor programs. However, since a heavy water-moderated reactor was not operated on natural U fuel at power reactor conditions, considerable improvement from this current status can be foreseen. A summary of improvements is presented concerning the concept which would result solely from operation of succeeding generation plants without a parallel development program, and improvements which would result from the successful completion of the development program as presented. One plant size was used in the evaluation of plant potential, with a 300 Mw/sub e/ nominal rating. The boiling D/sub 2/O-cooled, pressure tube direct cycle plant design was used. The current development program is outlined; this work includes several items leading to the long-range development of the concept. (auth)

Hutton, J.H.; Davis, S.A.; Graves, C.C.; Duffy, J.G. comps.

1960-08-19T23:59:59.000Z

326

The oxidation of Ba dosed Mo(100) surfaces with O/sub 2/ at moderately high temperatures  

DOE Green Energy (OSTI)

The oxidation of Mo(100) and Ba-covered Mo(100) by O/sub 2/ have been examined at moderately high temperature (700 to 1400/sup 0/K) using x-ray photoelectron spectroscopy. Results indicate that the Ba or BaO overlayer retards but does not prevent oxidation of the underlying Mo surface. The high temperature surface chemistry of the O/Ba/Mo surface is described. 11 refs., 3 figs.

Rogers, J.W. Jr.; Blair, D.S.; Paffett, M.T.

1987-01-01T23:59:59.000Z

327

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

328

Resolution Requirements for the Simulation of Deep Moist Convection  

Science Conference Proceedings (OSTI)

The spatial resolution appropriate for the simulation of deep moist convection is addressed from a turbulence perspective. To provide a clear theoretical framework for the problem, techniques for simulating turbulent flows are reviewed, and the ...

George H. Bryan; John C. Wyngaard; J. Michael Fritsch

2003-10-01T23:59:59.000Z

329

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

330

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

331

Imaging Lithium Atoms at Sub-Angstrom Resolution  

E-Print Network (OSTI)

110] orientation for LiCoO 2 without lithium atoms ( upper)and with lithium atoms (lower). Images are simulated at 0.9ÅHorn LBNL-56646 resolution of lithium ions in LiCoO 2 . Fall

O'Keefe, Michael A.; Shao-Horn, Yang

2005-01-01T23:59:59.000Z

332

Does Increasing Horizontal Resolution Produce More Skillful Forecasts?  

Science Conference Proceedings (OSTI)

This paper examines the impacts of increasing horizontal resolution on the performance of mesoscale numerical weather prediction models. A review of previous studies suggests that decreasing grid spacing to approximately 10 km orless generally ...

Clifford F. Mass; David Ovens; Ken Westrick; Brian A. Colle

2002-03-01T23:59:59.000Z

333

High Resolution Forward And Inverse Earthquake Modeling on Terascale Computers  

Science Conference Proceedings (OSTI)

For earthquake simulations to play an important role in the reduction of seismic risk, they must be capable of high resolution and high fidelity. We have developed algorithms and tools for earthquake simulation based on multiresolution hexahedral meshes. ...

Vokan Akcelik; Jacobo Bielak; George Biros; Ioannis Epanomeritakis; Antonio Fernandez; Omar Ghattas; Eui Joong Kim; Julio Lopez; David O'Hallaron; Tiankai Tu; John Urbanic

2003-11-01T23:59:59.000Z

334

Combating terrorism insurgency resolution software: a research note  

Science Conference Proceedings (OSTI)

This is a research note to propose the development of a combating terrorism (CbT) insurgency resolution software that would operationalize and visualize all the processes involved in resolving terrorist-type insurgencies, including metrics for measures ...

Joshua Sinai

2006-05-01T23:59:59.000Z

335

The New England High-Resolution Temperature Program  

Science Conference Proceedings (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

336

Entrainment in Cumulus Clouds: What Resolution is Cloud-Resolving?  

Science Conference Proceedings (OSTI)

Systematic numerical experiments were conducted to determine the spatial resolution required to resolve a moist thermal show convergence at a scale proportional to the smaller of the initial thermal diameter D0 and a buoyancy length scale Lbuoy. ...

George C. Craig; Andreas Dörnbrack

2008-12-01T23:59:59.000Z

337

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

Open Energy Info (EERE)

Number 02-384 DOI Not Provided Check for DOI availability: http:crossref.org Online Internet link for High-Resolution Aeromagnetic Survey to Image Shallow Faults, Dixie Valley...

338

High-Resolution Satellite Imagery for Mesoscale Meteorological Studies  

Science Conference Proceedings (OSTI)

In this article high-resolution satellite imagery from a variety of meteorological and environmental satellites is compared. Digital datasets from Geostationary Operational Environmental Satellite (GOES), National Oceanic and Atmospheric ...

David B. Johnson; Pierre Flament; Robert L. Bernstein

1994-01-01T23:59:59.000Z

339

Performance evaluation and optimization of nested high resolution weather simulations  

Science Conference Proceedings (OSTI)

Weather models with high spatial and temporal resolutions are required for accurate prediction of meso-micro scale weather phenomena. Using these models for operational purposes requires forecasts with sufficient lead time, which in turn calls for large ...

Preeti Malakar; Vaibhav Saxena; Thomas George; Rashmi Mittal; Sameer Kumar; Abdul Ghani Naim; Saiful Azmi Bin Hj Husain

2012-08-01T23:59:59.000Z

340

A Radar Simulator for High-Resolution Nonhydrostatic Models  

Science Conference Proceedings (OSTI)

A full radar simulator for high-resolution (1–5 km) nonhydrostatic models has been developed within the research nonhydrostatic mesoscale atmospheric (Meso-NH) model. This simulator is made up of building blocks, each of which describes a ...

Olivier Caumont; Véronique Ducrocq; Guy Delrieu; Marielle Gosset; Jean-Pierre Pinty; Jacques Parent du Châtelet; Hervé Andrieu; Yvon Lemaître; Georges Scialom

2006-08-01T23:59:59.000Z

Note: This page contains sample records for the topic "modis moderate 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 Global Numerical Weather Prediction Model with Variable Resolution  

Science Conference Proceedings (OSTI)

A conformal transformation suggested by F. Schmidt is followed to implement a global spectral model with variable resolution. A conformal mapping is defined from a physical sphere (like the earth) to a transformed (computational) sphere. The ...

Vivek Hardiker

1997-01-01T23:59:59.000Z

342

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

343

Compact high resolution isobar separator for study of exotic...  

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

Compact high resolution isobar separator for study of exotic decays A. Piechaczek 1 , V. Shchepunov 1 , H. K. Carter 1 J. C. Batchelder 1 , E. F. Zganjar 2 1 UNIRIB, Oak Ridge...

344

Higher Resolution in an Operational Ensemble Kalman Filter  

Science Conference Proceedings (OSTI)

Recently, the computing facilities available to the Meteorological Service of Canada were significantly upgraded. This provided an opportunity to improve the resolution of the global Ensemble Kalman Filter (EnKF) and the medium-range Global ...

P. L. Houtekamer; Xingxiu Deng; Herschel L. Mitchell; Seung-Jong Baek; Normand Gagnon

345

High-resolution Urban Image Classification Using Extended Features  

SciTech Connect

High-resolution image classification poses several challenges because the typical object size is much larger than the pixel resolution. Any given pixel (spectral features at that location) by itself is not a good indicator of the object it belongs to without looking at the broader spatial footprint. Therefore most modern machine learning approaches that are based on per-pixel spectral features are not very effective in high- resolution urban image classification. One way to overcome this problem is to extract features that exploit spatial contextual information. In this study, we evaluated several features in- cluding edge density, texture, and morphology. Several machine learning schemes were tested on the features extracted from a very high-resolution remote sensing image and results were presented.

Vatsavai, Raju [ORNL

2011-01-01T23:59:59.000Z

346

GHIS—The GOES High-Resolution Interferometer Sounder  

Science Conference Proceedings (OSTI)

A high spectral resolution interferometer sounder (GHIS) has been designed for flight on future geostationary meteorological satellites. It incorporates the measurement principles of an aircraft prototype instrument, which has demonstrated the ...

W. L. Smith; H. E. Revercomb; H. B. Howell; H-L. Huang; R. O. Knuteson; E. W. Koenig; D. D. LaPorte; S. Silverman; L. A. Sromovsky; H. M. Woolf

1990-12-01T23:59:59.000Z

347

Vertical Resolution and Accuracy of Atmospheric Infrared Sounding Spectrometers  

Science Conference Proceedings (OSTI)

A theoretical analysis is performed to evaluate the accuracy and vertical resolution of atmospheric profiles obtained with the HIRS/2, GOES I/M, and HIS instruments. In addition, a linear simultaneous retrieval algorithm is used with aircraft ...

Hung-Lung Huang; William L. Smith; Harold M. Woolf

1992-03-01T23:59:59.000Z

348

A framework for multi-resolution modeling of sustainable manufacturing  

Science Conference Proceedings (OSTI)

This paper proposes a multi-resolution framework for application of system dynamics modeling to sustainable manufacturing. Sustainable manufacturing involves interaction of four complex systems namely manufacturing, environmental, financial, and social ...

Sanjay Jain; Deogratias Kibira

2010-12-01T23:59:59.000Z

349

Documentation of high resolution solar resource assessment (10km...  

Open Energy Info (EERE)

solar resource assessment for Ethiopia provided by DLR. The high resolution solar data (10kmx10km) provide country maps of the annual and monthly sums of hourly global...

350

Documentation of high resolution solar resource assessment for...  

Open Energy Info (EERE)

solar resource assessment for Sri Lanka provided by DLR. The high resolution solar data (10kmx10km) provide country maps of the annual and monthly sums of hourly global...

351

Design and enhanced evaluation of a robust anaphor resolution algorithm  

Science Conference Proceedings (OSTI)

Syntactic coindexing restrictions are by now known to be of central importance to practical anaphor resolution approaches. Since, in particular due to structural ambiguity, the assumption of the availability of a unique syntactic reading proves to be ...

Roland Stuckardt

2001-12-01T23:59:59.000Z

352

U.N. Security Council Resolution 1540: Taking Stock  

SciTech Connect

More than two years have passed since the United Nations (U.N.) Security Council unanimously passed Resolution 1540. This seminal measure requires all U.N. Member States to enact and enforce “effective measures to establish domestic controls to prevent the proliferation of nuclear, chemical, biological weapons and their means of delivery.” Has this Resolution been successful? Did the 1540 Committee established by the Resolution fulfill its mandate? What does the future hold for Resolution 1540? Will it become an integral part of the web of nonproliferation treaties and regimes or will it recede into history as a well-meaning but unfulfilled attempt to prevent proliferation? These questions are timely and important to the nuclear materials management community and a discourse on their answers is needed.

Durbin, Karyn R.; Mladineo, Stephen V.

2006-08-01T23:59:59.000Z

353

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

354

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.

355

Resolution adopting energy conservation policies for the City of Seattle and setting forth a schedule for implementing them: resolution 25259  

SciTech Connect

The Seattle City Council by Resolution 24283 adopted goals and objectives for the year 2000 including: reaching a steady level of per capita energy consumption, using energy efficiency in providing for Seattle's demands, and formulating an energy policy for the city. The nine resolutions adopted concerning energy conservation and the schedule set forth to implement the policy are established. Resolution 25257 is also presented in which the City of Seattle intends to adopt the ASHRAE Standard 90-75 entitled ''Energy Conservation in New Building Design'' to be effective January 1, 1978. (MCW)

1976-01-01T23:59:59.000Z

356

Sensitivity of aerosol radiative forcing calculations to spectral resolution  

DOE Green Energy (OSTI)

Potential impacts of aerosol radiative forcing on climate have generated considerable recent interest. An important consideration in estimating the forcing from various aerosol components is the spectral resolution used for the solar radiative transfer calculations. This paper examines the spectral resolution required from the viewpoint of overlapping spectrally varying aerosol properties with other cross sections. A diagnostic is developed for comparing different band choices, and the impact of these choices on the radiative forcing calculated for typical sulfate and biomass aerosols was investigated.

Grant, K.E.

1996-10-01T23:59:59.000Z

357

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.

358

Hungry for Respect: The Moderating Roles of Status and Justice Orientation on Relationships between Interpersonal Justice and Emotions  

E-Print Network (OSTI)

Affective reactions to unfair treatment date back to the earliest work on organizational justice. Seminal research on inequity identifies anger and guilt as primary responses to judgments of low justice. More recently, interpersonal justice has been linked to emotions such as anger and hostility. In fact, interpersonal justice is arguably the most emotionally charged of all the justice types. Yet, despite the strong theoretical support and empirical evidence linking interpersonal justice to negative emotions, we are unsure whether dignity and respect from a supervisor may also influence positive emotions. Justice scholars have also begun to investigate the moderating influence of status on to the effects of interpersonal justice. It has been suggested, and empirically demonstrated, that people of lower objective status (hierarchical position, race) react more strongly to fairness relative to those higher in status. However, we do not yet know how the effects of interpersonal justice may be moderated by employees’ perceptions of personal status, workgroup status, or supervisor status. Furthermore, scholars have yet to examine the moderating influence of status on emotional reactions to interpersonal justice. In this dissertation, I answer recent calls for further investigation into the relationships between interpersonal justice and emotions and between interpersonal justice and status. Specifically, I draw from affective events theory and self-enhancement theory to develop a model of interpersonal justice, status, and emotions. In this model, I hypothesize a mediating effect of emotions on the relationships between interpersonal justice and a number of distal attitudes and behaviors. I further predict a moderating influence of justice orientation and three types of status—personal (self) status, workgroup status, and supervisor status—on the interpersonal justice to emotions relationships. A sample of 427 university-based military cadets provided partial support for my model. As expected, interpersonal justice predicted a number of important distal outcomes indirectly through both positive and negative emotions. Personal status, supervisor status, and justice orientation moderated several of the relationships between interpersonal justice and emotions. Implications for practice and theory are discussed.

Stoverink, Adam C

2013-08-01T23:59:59.000Z

359

Using a low-resolution entity model for shaping initial conditions for high-resolution combat models  

Science Conference Proceedings (OSTI)

Determining the initial conditions for high-resolution combat models presents a challenging modeling problem. These initial conditions can have a major impact on the outcome of the analysis, and yet there is a significant difficulty setting those conditions ...

Darryl Ahner; Arnold Buss; John Ruck

2007-12-01T23:59:59.000Z

360

An interactive super resolution coding approach of images and videos for enhanced user visualization  

Science Conference Proceedings (OSTI)

In this paper we propose an interactive super resolution coding technique to enhance user's visualization of received low resolution (LR) images. The proposed technique hides/embeds high frequencies and edges in the LR image, and constructs a high resolution ...

Gamal Fahmy

2011-12-01T23:59:59.000Z

Note: This page contains sample records for the topic "modis moderate 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

A Variable-Resolution Stretched-Grid General Circulation Model: Regional Climate Simulation  

Science Conference Proceedings (OSTI)

The development of and results obtained with a variable-resolution stretched-grid GCM for the regional climate simulation mode are presented. A global variable-resolution stretched grid used in the study has enhanced horizontal resolution over ...

Michael S. Fox-Rabinovitz; Lawrence L. Takacs; Ravi C. Govindaraju; Max J. Suarez

2001-03-01T23:59:59.000Z

362

Spatial resolution of a ?PIC-based neutron imaging detector  

E-Print Network (OSTI)

We present a detailed study of the spatial resolution of our time-resolved neutron imaging detector utilizing a new neutron position reconstruction method that improves both spatial resolution and event reconstruction efficiency. Our prototype detector system, employing a micro-pattern gaseous detector known as the micro-pixel chamber ({\\mu}PIC) coupled with a field-programmable-gate-array-based data acquisition system, combines 100{\\mu}m-level spatial and sub-{\\mu}s time resolutions with excellent gamma rejection and high data rates, making it well suited for applications in neutron radiography at high-intensity, pulsed neutron sources. From data taken at the Materials and Life Science Experimental Facility within the Japan Proton Accelerator Research Complex (J-PARC), the spatial resolution was found to be approximately Gaussian with a sigma of 103.48 +/- 0.77 {\\mu}m (after correcting for beam divergence). This is a significant improvement over that achievable with our previous reconstruction method (334 +/- 13 {\\mu}m), and compares well with conventional neutron imaging detectors and with other high-rate detectors currently under development. Further, a detector simulation indicates that a spatial resolution of less than 60 {\\mu}m may be possible with optimization of the gas characteristics and {\\mu}PIC structure. We also present an example of imaging combined with neutron resonance absorption spectroscopy.

Joseph D. Parker; Masahide Harada; Kaori Hattori; Satoru Iwaki; Shigeto Kabuki; Yuji Kishimoto; Hidetoshi Kubo; Shunsuke Kurosawa; Yoshihiro Matsuoka; Kentaro Miuchi; Tetsuya Mizumoto; Hironobu Nishimura; Takayuki Oku; Tatsuya Sawano; Takenao Shinohara; Jun-ichi Suzuki; Atsushi Takada; Toru Tanimori; Kazuki Ueno

2013-05-16T23:59:59.000Z

363

Benchmark test of neutron transport calculations: Indium, nickel, gold, europium, and cobalt activation with and without energy moderated fission neutrons by iron simulating the Hiroshima atomic bomb casing  

Science Conference Proceedings (OSTI)

A benchmark test of the Monte Carlo neutron and photon transport code system (MCNP) was performed using a bare- and energy-moderated {sup 252}Cf fission neutron source which was obtained by transmission through 10-cm-thick iron. An iron plate was used to simulate the effect of the Hiroshima atomic bomb casing. This test includes the activation of indium and nickel for fast neutrons and gold, europium, and cobalt for thermal and epithermal neutrons, which were inserted in the moderators. The latter two activations are also to validate {sup 152}Eu and {sup 60}Co activity data obtained from the atomic bomb-exposed specimens collected at Hiroshima and Nagasaki, Japan. The neutron moderators used were Lucite and Nylon 6 and the total thickness of each moderator was 60 cm or 65 cm. Measured activity data (reaction yield) of the neutron-irradiated detectors in these moderators decreased to about 1/1,000th or 1/10,000th, which corresponds to about 1,500 m ground distance from the hypocenter in Hiroshima. For all of the indium, nickel, and gold activity data, the measured and calculated values agreed within 25%, and the corresponding values for europium and cobalt were within 40%. From this study, the MCNP code was found to be accurate enough for the bare- and energy-moderated {sup 252}Cf neutron activation calculations of these elements using moderators containing hydrogen, carbon, nitrogen, and oxygen. 18 refs., 10 figs., 4 tabs.

Iwatani, Kazuo; Shizuma, Kiyoshi; Hasai, Hiromi; Hoshi, Masaharu; Hiraoka, Masayuki; Hayakawa, Norihiko [Hiroshima Univ., Higashi-Hiroshima (Japan); Oka, Takamitsu [Kure Women`s College, Hiroshima-ken (Japan)

1994-10-01T23:59:59.000Z

364

CORRELATION OF CRITICAL MASS DATA ON LIGHT WATER MODERATED, FULLY ENRICHED URANIUM, STAINLESS STEEL REACTORS. PART I  

SciTech Connect

Experimental data were collected on over 70 light water moderated, fully enriched uranium, stainless steel, critical cores. An equation for the critical mass of cores with a buckling of 0.007 cm/sup -2/ that is lineally dependent on stainless steel volume fraction and grams of B/sup 10/ was compared with available critical experiments and found to yield reasonable results. A correlation method, relating buckling to ( xi SIGMA /sub s// SIGMA /sub a/) was found to fit the available experiments. (auth)

Lee, D.H.

1962-07-17T23:59:59.000Z

365

Analysis of the burping behavior of the cold solid methane moderator at IPNS (Intense Pulsed Neutron Source)  

SciTech Connect

Examination of the cold solid methane moderator at IPNS (Model II) revealed that a circumferential weld failed due to high internal pressure, such as would be caused by thermal expansion of solid methane or the release of Hydrogen gas upon spontaneous heating. This weld is the main object of current attention for a design of a replacement. The present paper deals with the processes which lead to the burping behavior and outlines the analysis of some of the consequences. The purpose is to determine conditions under which the system can operate at the lowest possible temperature, avoiding the problems experienced to data.

Carpenter, J.M.; Walter, U.

1986-01-01T23:59:59.000Z

366

Portable electro-mechanically cooled high-resolution germanium detector  

SciTech Connect

We have integrated a small, highly-reliable, electro-mechanical cryo-cooler with a high-resolution germanium detector for portable/field applications. The system weighs 6.8 kg and requires 40 watts of power to operate once the detector is cooled to its operating temperature. the detector is a 500 mm{sup 2} by 20-mm thick low-energy configuration that gives a full-width at half maximum (FWHM) energy resolution of 523 eV at 122 keV, when cooled with liquid nitrogen. The energy resolution of the detector, when cooled with the electro-mechanical cooler, is 570 eV at 122 keV. We have field tested this system in measurements of plutonium and uranium for isotopic and enrichment information using the MGA and MGAU analysis programs without any noticeable effects on the results.

Neufeld, K.W.; Ruhter, W.D.

1995-05-01T23:59:59.000Z

367

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

368

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.

369

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)

370

A high-resolution two-dimensional imaging velocimeter  

Science Conference Proceedings (OSTI)

Velocity interferometers are typically used to measure velocities of surfaces at a single point or along an imaged line as a function of time. We describe an optical arrangement that enables high-resolution measurements of the two-dimensional velocity field across a shock front or shocked interface. The technique is employed to measure microscopic fluctuations in shock fronts that have passed through materials being considered as ablators for indirect-drive inertial confinement fusion. With picosecond time resolution the instrument captures velocity modes with wavelengths as short as 2.5 {mu}m at a resolution of {approx}10 m/s rms on velocity fields averaging many km/s over an 800 {mu}m field of view.

Celliers, P. M.; Erskine, D. J.; Sorce, C. M.; Braun, D. G.; Landen, O. L.; Collins, G. W. [Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94551 (United States)

2010-03-15T23:59:59.000Z

371

The theory and practice of high resolution scanning electron microscopy  

Science Conference Proceedings (OSTI)

Recent advances in instrumentation have produced the first commercial examples of what can justifiably be called High Resolution Scanning Electron Microscopes. The key components of such instruments are a cold field emission gun, a small-gap immersion probe-forming lens, and a clean dry-pumped vacuum. The performance of these microscopes is characterized by several major features including a spatial resolution, in secondary electron mode on solid specimens, which can exceed 1nm on a routine basis; an incident probe current density of the order of 10{sup 6} amps/cm{sup 2}; and the ability to maintain these levels of performance over an accelerating voltage range of from 1 to 30keV. This combination of high resolution, high probe current, low contamination and flexible electron-optical conditions provides many new opportunitites for the application of the SEM to materials science, physics, and the life sciences. 27 refs., 14 figs.

Joy, D.C. (Tennessee Univ., Knoxville, TN (USA) Oak Ridge National Lab., TN (USA))

1990-01-01T23:59:59.000Z

372

Broadband high resolution X-ray spectral analyzer  

DOE Patents (OSTI)

A broad bandwidth high resolution x-ray fluorescence spectrometer has a performance that is superior in many ways to those currently available. It consists of an array of 4 large area microcalorimeters with 95% quantum efficiency at 6 keV and it produces x-ray spectra between 0.2 keV and 7 keV with an energy resolution of 7 to 10 eV. The resolution is obtained at input count rates per array element of 10 to 50 Hz in real-time, with analog pulse processing and thermal pile-up rejection. This performance cannot be matched by currently available x-ray spectrometers. The detectors are incorporated into a compact and portable cryogenic refrigerator system that is ready for use in many analytical spectroscopy applications as a tool for x-ray microanalysis or in research applications such as laboratory and astrophysical x-ray and particle spectroscopy.

Silver, Eric H. (Berkeley, CA); Legros, Mark (Berkeley, CA); Madden, Norm W. (Livermore, CA); Goulding, Fred (Lafayette, CA); Landis, Don (Pinole, CA)

1998-01-01T23:59:59.000Z

373

Broadband high resolution X-ray spectral analyzer  

DOE Patents (OSTI)

A broad bandwidth high resolution X-ray fluorescence spectrometer has a performance that is superior in many ways to those currently available. It consists of an array of 4 large area microcalorimeters with 95% quantum efficiency at 6 keV and it produces X-ray spectra between 0.2 keV and 7 keV with an energy resolution of 7 to 10 eV. The resolution is obtained at input count rates per array element of 10 to 50 Hz in real-time, with analog pulse processing and thermal pile-up rejection. This performance cannot be matched by currently available X-ray spectrometers. The detectors are incorporated into a compact and portable cryogenic refrigerator system that is ready for use in many analytical spectroscopy applications as a tool for X-ray microanalysis or in research applications such as laboratory and astrophysical X-ray and particle spectroscopy. 6 figs.

Silver, E.H.; Legros, M.; Madden, N.W.; Goulding, F.; Landis, D.

1998-07-07T23:59:59.000Z

374

High-Resolution Differential Ion Mobility Spectrometry of a Protein  

SciTech Connect

Use of elevated electric fields and helium-rich gases has recently enabled differential IMS with resolving power up to R ~ 300. Here we applied that technique to proteins (namely, mass-selected ubiquitin ions), achieving R up to ~80 and separating many previously mixed conformers. While still limited by conformational multiplicity within each observed feature, this resolution is some four times the highest previously reported using either conventional or differential IMS. The capability for fine resolution of protein conformers may open new avenues for variant separation in top-down proteomics.

Shvartsburg, Alexandre A.; Smith, Richard D.

2013-01-17T23:59:59.000Z

375

High resolution BPMS with integrated gain correction system  

Science Conference Proceedings (OSTI)

High resolution beam position monitors (BPM) are an essential tool to achieve and reproduce a low vertical beam emittance at the KEK Accelerator Test Facility (ATF) damping ring. The ATF damping ring (DR) BPMs are currently upgraded with new high resolution read-out electronics. Based on analog and digital down-conversion techniques, the upgrade includes an automatic gain calibration system to correct for slow drift effects and ensure high reproducible beam position readings. The concept and its technical realization, as well as preliminary results of beam studies are presented.

Wendt, M.; Briegel, C.; Eddy, N.; Fellenz, B.; Gianfelice, E.; Prieto, P.; Rechenmacher, R.; Voy, D.; /Fermilab; Terunuma, N.; Urakawa, J.; /KEK, Tsukuba

2009-08-01T23:59:59.000Z

376

Improved Spatial Resolution For Reflection Mode Infrared Spectromicroscopy  

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 numerical 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 a microscope coupled to a synchrotron source.

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

2009-08-13T23:59:59.000Z

377

High-resolution seismic studies applied to injected geothermal fluids  

DOE Green Energy (OSTI)

The application of high-resolution microseismicity studies to the problem of monitoring injected fluids is one component of the Geothermal Injection Monitoring Project at LLNL. The evaluation of microseismicity includes the development of field techniques, and the acquisition and processing of events during the initial development of a geothermal field. To achieve a specific detection threshold and location precision, design criteria are presented for seismic networks. An analysis of a small swarm near Mammoth Lakes, California, demonstrates these relationships and the usefulness of high-resolution seismic studies. A small network is currently monitoring the Mammoth-Pacific geothermal power plant at Casa Diablo as it begins production.

Smith, A.T.; Kasameyer, P.

1985-01-01T23:59:59.000Z

378

Winter Forecast Problems Associated with Light to Moderate Snow Events in the Mid-Atlantic States on 14 and 22 February 1986  

Science Conference Proceedings (OSTI)

Two cases of light and moderate snow events over the Washington, DC area are presented for 14 and 22 February 1986. These cases were selected since the upper-tropospheric and surface features were quite similar, yet significantly different ...

Jeffrey Homan; Louis W. Uccellini

1987-09-01T23:59:59.000Z

379

ARM - Publications: Science Team Meeting Documents  

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

Evaluation of Terra Aerosol and Water Vapor Measurements Using ARM SGP Data Evaluation of Terra Aerosol and Water Vapor Measurements Using ARM SGP Data Ferrare, R.A.(a), Brasseur, L.H.(b), Clayton, M.B.(b), Turner, D.D.(c), Remer, L.(d), and Gao, B.C.(e), NASA Langley (a), SAIC (b), Pacific Northwest National Laboratory (c), NASA Goddard (d), Naval Research Laboratory (e) Twelfth Atmospheric Radiation Measurement (ARM) Science Team Meeting Measurements from the Department of Energy Atmospheric Radiation Measurement (ARM) Southern Great Plains (SGP) site are used to evaluate atmospheric measurements derived from NASA's Moderate-Resolution Imaging Spectroradiometer (MODIS) and Multiangle Imaging Spectroradiometer (MISR) sensors on board the Terra satellite. MODIS and MISR AOT retrievals are evaluated using ARM SGP Cimel Sun photometer and MultiFilter Rotating

380

ARM - Publications: Science Team Meeting Documents  

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

Scale Analysis of Spatial and Temporal Variability of Aerosol Optical Scale Analysis of Spatial and Temporal Variability of Aerosol Optical Properties Over the SGP Site based on MFRSR and MODIS Data Alexandrov, M.D.(a,b), Marshak, A.(b), Cairns, B.(a,b), Lacis, A.A.(b), and Carlson, B.E.(b), Columbia University (a), NASA (b) Thirteenth Atmospheric Radiation Measurement (ARM) Science Team Meeting We present scale-by-scale analysis of variability of atmospheric aerosol optical thickness (AOT) and (preliminary) of the Angstrom exponent. This analysis is based on retrievals from Multi-Filter Rotating Shadowband Radiometers (MFRSRs) and from Moderate Resolution Imaging Spectroradiometer (MODIS) satellite data. This type of analysis has been applied to a remote sensing aerosol dataset for the first time. The MFRSR data were collected

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they are not comprehensive nor are they the most current set.
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to obtain the most current and comprehensive results.


381

Comparison of Cloud Top Height and Optical Depth Histograms from ISCCP,  

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

Comparison of Cloud Top Height and Optical Depth Histograms from ISCCP, Comparison of Cloud Top Height and Optical Depth Histograms from ISCCP, MISR, and MODIS Marchand, Roger Pacific Northwest National Laboratory Ackerman, Thomas Pacific Northwest National Laboratory Category: Cloud Properties Joint histograms of Cloud Top Height (CTH) and Optical Depth (OD) derived by the International Satellite Cloud Climatology Project (ISCCP) are being widely used by the climate modeling community in evaluating global climate models. Similar joint histograms of CTH-OD are now being produced by the NASA Multi-angle Imaging Spectro-Radiometer (MISR) and Moderate Resolution Imaging Spectroradiometer (MODIS) instruments. There are notable differences in the histograms being produced by these three projects. In this poster we analyze some of the differences and discuss how the

382

LBA-ECO Data Sets Released, January 2007  

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

announces the release of two data sets associated with the announces the release of two data sets associated with the LBA-ECO component of the Large Scale Biosphere-Atmosphere Experiment in Amazonia (LBA). The data set entitled "LBA-ECO TG-07 Forest Structure Measurements for GLAS Validation: Santarem 2004" provides the results of GLAS (the Geoscience Laser Altimer System) forest structure validation surveys conducted along transects at the Santarem and Sao Jorge forest sites. The data set entitled "LBA-ECO LC-23 ASTER and MODIS Fire Data Comparison for Brazil: 2003-2004" provides data associated with MODIS (Moderate Resolution Imaging Spectroradiometer) fire maps generated using two different algorithms and compared against fire maps produced by ASTER (Advanced Spaceborne Thermal Emission and Reflection Radiometer). One

383

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.

384

High-resolution ion mobility measurements Ph. Dugourd,a)  

E-Print Network (OSTI)

High-resolution ion mobility measurements Ph. Dugourd,a) R. R. Hudgins, D. E. Clemmer,b) and M. F; accepted for publication 28 October 1996 Gas phase ion mobility measurements can resolve structural isomers for polyatomic ions and provide information about their geometries. A new experimental apparatus for performing

Clemmer, David E.

385

Accelerated High-Resolution Differential Ion Mobility Separations Using Hydrogen  

SciTech Connect

The resolving power of differential ion mobility spectrometry (FAIMS) was dramatically increased recently by the introduction of carrier gases comprising up to 75% He or various vapors, enabling many new applications. However, the gains were often at the expense of analysis speed, in particular making high-resolution FAIMS incompatible with online liquid-phase separations. Here, we report FAIMS employing hydrogen, specifically in mixtures with N2 containing up to 98.4% H2. Such compositions raise the mobilities of all ions and thus resolving power, while avoiding the electrical breakdown inevitable in He-rich mixtures. The increases of resolving power and ensuing peak resolution are especially significant at the greatest H2 fractions - above {approx}80 - 90%. Higher resolution can be exchanged for acceleration of the analyses by up to {approx}20 times. For more mobile species such as multiply-charged peptides, this exchange is presently forced by the constraints of existing FAIMS devices, but future designs optimized for H2 should consistently improve resolution for all analytes.

Shvartsburg, Alexandre A.; Smith, Richard D.

2011-11-10T23:59:59.000Z

386

High-resolution lithography based on selective removal of atoms  

Science Conference Proceedings (OSTI)

A new method of high-resolution lithography based on selective removal of atoms is described. Drawbacks of lift-off lithography in comparison with the method proposed are pointed out and test structures of metal (Mo) stripes with a thickness of 50 nm are obtained.

Domantovskii, A. G.; Gurovich, B. A.; Maslakov, K. I. [Russian Research Centre Kurchatov Institute (Russian Federation)

2006-12-15T23:59:59.000Z

387

SLGAD Resolution for Inference on Logic Programs with Annotated Disjunctions  

Science Conference Proceedings (OSTI)

Logic Programs with Annotated Disjunctions (LPADs) allow to express probabilistic information in logic programming. The semantics of an LPAD is given in terms of the well-founded models of the normal logic programs obtained by selecting one disjunct ... Keywords: Logic Programs with Annotated Disjunctions, Probabilistic Logic Programming, SLG Resolution, Well-Founded Semantics

Fabrizio Riguzzi

2010-08-01T23:59:59.000Z

388

High-Resolution Structure of Viruses from Random Snapshots  

E-Print Network (OSTI)

The advent of the X-ray Free Electron Laser (XFEL) has made it possible to record snapshots of biological entities injected into the X-ray beam before the onset of radiation damage. Algorithmic means must then be used to determine the snapshot orientations and reconstruct the three-dimensional structure of the object. Existing approaches are limited in reconstruction resolution to at best 1/30th of the object diameter, with the computational expense increasing as the eighth power of the ratio of diameter to resolution. We present an approach capable of exploiting object symmetries to recover three-dimensional structure to 1/100th of the object diameter, and thus reconstruct the structure of the satellite tobacco necrosis virus to atomic resolution. Combined with the previously demonstrated capability to operate at ultralow signal, our approach offers the highest reconstruction resolution for XFEL snapshots to date, and provides a potentially powerful alternative route for analysis of data from crystalline and...

Hosseinizadeh, A; Dashti, A; Fung, R; D'Souza, R M; Ourmazd, A

2013-01-01T23:59:59.000Z

389

Director's Protest Resolution Report Programmatic Land Use Plan  

E-Print Network (OSTI)

1 Director's Protest Resolution Report Programmatic Land Use Plan Amendments for Solar Energy......................................................................................... 68 #12;Reader How do The Dire excerpts Land Ma Report How do 1. F al 2. In n Issue T NEPA Issue N Organi Protest Issue E Rather renewab Summa There i Respon Specific decision 's Guide I read the R ector

Argonne National Laboratory

390

Gravity Waves Appearing in a High-Resolution GCM Simulation  

Science Conference Proceedings (OSTI)

Global characteristics of gravity waves in the lower stratosphere are examined using a GCM with high resolution in both the horizontal (T106, corresponding to about 120 km) and the vertical (600 m). The bottom boundary condition of the model is ...

Kaoru Sato; Toshiro Kumakura; Masaaki Takahashi

1999-04-01T23:59:59.000Z

391

RESOLUTION NO. 2011-82 ADOPTING MODESTO IRRIGATION DISTRICT'S RENEWABLE  

E-Print Network (OSTI)

RESOLUTION NO. 2011-82 ADOPTING MODESTO IRRIGATION DISTRICT'S RENEWABLE ENERGY RESOURCES. 2003-245, the Board of Directors ofthe Modesto Irrigation District adopted a Renewable Portfolio Standard (RPS) in an effort to meet 20 percent ofits retail energy sales with renewable resources by 2017

392

High Resolution Aircraft Scanner Mapping of Geothermal and Volcanic Areas  

DOE Green Energy (OSTI)

High spectral resolution GEOSCAN Mkll multispectral aircraft scanner imagery has been acquired, at 3-6 m spatial resolutions, over much of the Taupo Volcanic Zone as part of continuing investigations aimed at developing remote sensing techniques for exploring and mapping geothermal and volcanic areas. This study examined the 24-band: visible, near-IR (NIR), mid-IR (MIR) and thermal-IR (TIR) imagery acquired over Waiotapu geothermal area (3 m spatial resolution) and White Island volcano (6 m resolution). Results show that color composite images composed of visible and NIR wavelengths that correspond to color infrared (CIR) photographic wavelengths can be useful for distinguishing among bare ground, water and vegetation features and, in certain cases, for mapping various vegetation types. However, combinations which include an MIR band ({approx} 2.2 {micro}m) with either visible and NIR bands, or two NIR bands, are the most powerful for mapping vegetation types, water bodies, and bare and hydrothermally altered ground. Combinations incorporating a daytime TIR band with NIR and MIR bands are also valuable for locating anomalously hot features and distinguishing among different types of surface hydrothermal alteration.

Mongillo, M.A.; Cochrane, G.R.; Wood, C.P.; Shibata, Y.

1995-01-01T23:59:59.000Z

393

Very high resolution etching of magnetic nanostructures in organic gases  

Science Conference Proceedings (OSTI)

Two methods for high resolution dry etching of permalloy (NiFe) and iron (Fe) nanostructures are presented and discussed. The first involves the use of carbon monoxide (CO) and ammonia (NH"3) as etching gases, the second uses methane (CH"4), hydrogen ... Keywords: CH4/H2/O2, CO/NH3, Dry etching, Fe, NiFe

X. Kong; D. Krása; H. P. Zhou; W. Williams; S. McVitie; J. M. R. Weaver; C. D. W. Wilkinson

2008-05-01T23:59:59.000Z

394

Spatial resolution limits for synchrotron-based infrared spectromicroscopy  

SciTech Connect

Detailed spatial resolution tests were performed on beamline 1.4.4 at the Advanced Light Source synchrotron facility in Berkeley, CA. The high-brightness synchrotron source is coupled at this beamline to a Thermo-Electron Continumum XL infrared microscope. Two types of resolution tests in both the mid-IR (using a KBr beamsplitter and an MCT-A* detector) and in the near-IR (using a CaF2 beamsplitter and an InGaAS detector) were performed and compared to a simple diffraction-limited spot size model. At the shorter wavelengths in the near-IR the experimental results begin to deviate from only diffraction-limited. The entire data set is fit using a combined diffraction-limit and demagnified electron beam source size model. This description experimentally verifies how the physical electron beam size of the synchrotron source demagnified to the sample stage on the endstation begins to dominate the focussed spot size and therefore spatial resolution at higher energies. We discuss how different facilities, beamlines, and microscopes will affect the achievable spatial resolution.

Levenson, Erika; Lerch, Philippe; Martin, Michael C.

2007-10-15T23:59:59.000Z

395

High-resolution ionization detector and array of such detectors  

DOE Patents (OSTI)

A high-resolution ionization detector and an array of such detectors are described which utilize a reference pattern of conductive or semiconductive material to form interaction, pervious and measurement regions in an ionization substrate of, for example, CdZnTe material. The ionization detector is a room temperature semiconductor radiation detector. Various geometries of such a detector and an array of such detectors produce room temperature operated gamma ray spectrometers with relatively high resolution. For example, a 1 cm.sup.3 detector is capable of measuring .sup.137 Cs 662 keV gamma rays with room temperature energy resolution approaching 2% at FWHM. Two major types of such detectors include a parallel strip semiconductor Frisch grid detector and the geometrically weighted trapezoid prism semiconductor Frisch grid detector. The geometrically weighted detector records room temperature (24.degree. C.) energy resolutions of 2.68% FWHM for .sup.137 Cs 662 keV gamma rays and 2.45% FWHM for .sup.60 Co 1.332 MeV gamma rays. The detectors perform well without any electronic pulse rejection, correction or compensation techniques. The devices operate at room temperature with simple commercially available NIM bin electronics and do not require special preamplifiers or cooling stages for good spectroscopic results.

McGregor, Douglas S. (Ypsilanti, MI); Rojeski, Ronald A. (Pleasanton, CA)

2001-01-16T23:59:59.000Z

396

Efficient routing and conflict resolution in F and IADM networks  

Science Conference Proceedings (OSTI)

The paper introduces a novel routing technique and a way to realize passable permutations in F and IADM redundant multistage interconnection networks. The simplicity of selecting alternate routes for a given source-destination pair is demonstrated by ... Keywords: F networks, redundant networks, fault tolerance, network topology, conflict resolution, IADM networks, routing, passable permutations, multistage interconnection networks, cycles

Anand; Agrawal; Kini

1990-12-01T23:59:59.000Z

397

FULL TEXT OF FACULTY SENATE RESOLUTIONS January 2010 December 2011  

E-Print Network (OSTI)

Standards Committee for further review and consideration. Resolution #10-09 Approved by the Faculty Senate Committee establishes the university radiation safety policy. This committee reviews each proposal to use on the campus of ECUmust undergo a review by the office of Radiation and Biological Safety and gain approval

398

High-Resolution Initialization and Simulations of Typhoon Morakot (2009)  

Science Conference Proceedings (OSTI)

A model self-bogus vortex is constructed by cycle runs using the Weather Research and Forecasting (WRF) model to provide high-resolution initial conditions for tropical cyclone (TC) simulations. The vortex after 1 h of model simulation is used to ...

Hiep Van Nguyen; Yi-Leng Chen

2011-05-01T23:59:59.000Z

399

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

400

Weaver/Friedman RESOLUTION NO. 12-202  

E-Print Network (OSTI)

with State Environmental Mandates 1. Resolution approving the 2012 GWP Renewable Portfolio Standard (RPS of both compliance with California's state RPS mandates and implementation of Califomia's cap Standard (RPS) Requirements GWP is required by state law to comply with recently enacted RPS mandates

Note: This page contains sample records for the topic "modis moderate 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

Adaptive high-resolution simulation of realistic gaseous detonation waves  

DOE Green Energy (OSTI)

The numerical approximation of detonation waves in gaseous combustible mixtures is extremely demanding since a wide range of scales needs to be resolved. A dynamically adaptive high-resolution finite volume method is described that has enabled accurately resolved computational investigations of the transient behavior of regularly oscillating detonations in low-pressure hydrogen-oxygen mixtures in realistic two-dimensional geometry.

Deiterding, Ralf [ORNL

2007-01-01T23:59:59.000Z

402

Dispute prevention and dispute resolution in networked health information technology  

Science Conference Proceedings (OSTI)

The United States has committed to promote Health Information Technology through Electronic Health Records that will be exchanged among participants in the healthcare enterprise. In anticipation of problems, legal remedies have been established to protect ... Keywords: accuracy, disputes, electronic health records, medical information systems, misunderstandings, online dispute resolution, process, security

Norman Sondheimer; Ethan Katsh; Lori Clarke; Leon Osterweil; Daniel Rainey

2009-05-01T23:59:59.000Z

403

Strategy for resolution of the flammable gas safety issue  

DOE Green Energy (OSTI)

This document provides a strategy for resolution of the Flammable Gas Safety Issue. It defines the key elements required for the following: Closing the Flammable Gas Unreviewed Safety Question (USQ); Providing the administrative basis for resolving the safety issue; Defining the data needed to support these activities; and Providing the technical and administrative path for removing tanks from the Watch List.

Johnson, G.D.

1997-05-23T23:59:59.000Z

404

Probe for high resolution NMR with sample reorientation  

DOE Patents (OSTI)

An improved NMR probe and method are described which substantially improve the resolution of NMR measurements made on powdered or amorphous or otherwise orientationally disordered samples. The apparatus mechanically varies the orientation of the sample such that the time average of two or more sets of spherical harmonic functions are zero.

Pines, Alexander (Berkeley, CA); Samoson, Ago (Tallinn, SU)

1990-01-01T23:59:59.000Z

405

Probe for high resolution NMR with sample reorientation  

DOE Patents (OSTI)

An improved NMR probe and method are described which substantially improve the resolution of NMR measurements made on powdered or amorphous or otherwise orientationally disordered samples. The apparatus mechanically varies the orientation of the sample such that the time average of two or more sets of spherical harmonic functions are zero. 8 figs.

Pines, A.; Samoson, A.

1990-02-06T23:59:59.000Z

406

Resolution and noise trade-off analysis for volumetric CT  

Science Conference Proceedings (OSTI)

Until recently, most studies addressing the trade-off between spatial resolution and quantum noise were performed in the context of single-slice CT. In this study, we extend the theoretical framework of previous works to volumetric CT and further extend it by taking into account the actual shapes of the preferred reconstruction kernels. In the experimental study, we also attempt to explore a three-dimensional approach for spatial resolution measurement, as opposed to the conventional two-dimensional approaches that were widely adopted in previously published studies. By scanning a finite-sized sphere phantom, the MTF was measured from the edge profile along the spherical surface. Cases of different resolutions (and noise levels) were generated by adjusting the reconstruction kernel. To reduce bias, the total photon fluxes were matched: 120 kVp, 200 mA, and 1 s per gantry rotation. All data sets were reconstructed using a modified FDK algorithm under the same condition: Scan field-of-view (SFOV)=10 cm, and slice thickness=0.625 mm. The theoretical analysis indicated that the variance of noise is proportional to >4th power of the spatial resolution. Our experimental results supported this conclusion by showing the relationship is 4.6th (helical) or 5th (axial) power.

Li Baojun; Avinash, Gopal B.; Hsieh, Jiang [Applied Science Laboratory, General Electric Healthcare, Waukesha, Wisconsin 53188 (United States)

2007-10-15T23:59:59.000Z

407

Moderate Degree of Input Negative Entropy Flow and Decrease of Entropy in Astrophysics, Biology, Psychology and Social Systems  

E-Print Network (OSTI)

Thermodynamics have been applied to astronomy, biology, psychology, some social systems and so on. But, various evolutions from astronomy to biology and social systems cannot be only increase of entropy. When fluctuations are magnified due to internal interactions, the statistical independence and the second law of the thermodynamics are not hold. The existence of internal interactions is necessary condition of decrease of entropy in isolated system. We calculate quantitatively the entropy of plasma. Then we discuss the thermodynamics of biology, and obtain a mathematical expression on moderate degree of input negative entropy flow, which is a universal scientific law. Further, the thermodynamics of physiology and psychology, and the thought field are introduced. Qigong and various religious practices are related to these states of order, in which decrease of entropy is shown due to internal interactions of the isolated systems. Finally we discuss possible decrease of entropy in some social systems.

Yi-Fang Chang

2009-10-04T23:59:59.000Z

408

Microsoft Word - 5Lab_High_Resolution.doc  

National Nuclear Security Administration (NNSA)

Proceedings from the Five Lab Confernce 2005 LA-UR-05-3732 Rider, W. J. et al. UNCLASSIFIED Approaches to Improved High-Resolution Methods for Eulerian Hydrodynamics (U) William Rider*, Jeff Greenough ** and Jim Kamm* *LANL, MS F699, Los Alamos, NM 87545 ** LLNL, Livermore, CA 94550 We have extended the usual notions used in high-resolution methods. Rather than applying a single principle such as monotonicity or essentially non-oscillatory stencil selection, we hybridize multiple principles applying them where they are most effective. We define methods that blend high-order accuracy with essentially non-oscillatory methods when monotonicity conditions are violated. The methods can be defined with a number of variants leading to results with differing properties. We also focus on the

409

Documentation of high resolution solar resource assessment for Ghana  

Open Energy Info (EERE)

Ghana Ghana provided by DLR Dataset Summary Description (Abstract): Documentation of the satellite-based high resolution solar resource assessment for Ghana provided by DLR. The high resolution solar data (10kmx10km) provide country maps of the annual and monthly sums of hourly global horizontal and direct normal irradiance (GHI and DNI) for the year 2000, 2001 and 2002. Additionally, for selected sites hourly values of GHI and DNI are provided.The Documentation gives an overview about the used input data and used methodology, shows example maps and describes a comparison with ground data (if provided by the country) (Purpose): The data are helpful for the assessment of the solar potential of the country and can give projet developer a first impression of the solar resource of the country. For the selected

410

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

411

Documentation of high resolution solar resource assessment for Sri Lanka  

Open Energy Info (EERE)

Sri Lanka Sri Lanka provided by DLR Dataset Summary Description (Abstract): Documentation of the satellite-based high resolution solar resource assessment for Sri Lanka provided by DLR. The high resolution solar data (10kmx10km) provide country maps of the annual and monthly sums of hourly global horizontal and direct normal irradiance (GHI and DNI) for the year 2000, 2002 and 2003. Additionally, for selected sites hourly values of GHI and DNI are provided.The Documentation gives an overview about the used input data and used methodology, shows example maps and describes a comparison with ground data (if provided by the country) (Purpose): The data are helpful for the assessment of the solar potential of the country and can give project developer a first impression of the solar resource of the country. For the selected sites, the hourly time series can be used for the simulation of Photovoltaic (PV)-systems or Concentrating Solar Power (CSP)-systems.

412

Human Capital: The Role of Ombudsmen in Dispute Resolution  

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

to the Ranking Member, to the Ranking Member, Subcommittee on International Security, Proliferation, and Federal Services, Committee on Government Affairs, U.S. Senate United States General Accounting Office GAO April 2001 HUMAN CAPITAL The Role of Ombudsmen in Dispute Resolution GAO-01-466 Page i GAO-01-466 The Role of Ombudsmen in Dispute Resolution Letter 1 Results in Brief 2 Background 5 Objectives, Scope, and Methodology 12 Some Agencies Use Ombudsmen to Deal With Workplace Issues 14 The Case Illustrations: Varied Approaches to a Shared Goal 15 Forums Exist for Sharing Best Practices and Lessons Learned 24 Conclusions 27 Recommendation to the Attorney General 28 Comments of Experts 28 Comments from the Attorney General 29 Appendix I Ombudsman-Related Internet Resources 31 Appendix II Federal Workplace Ombudsman Offices as of

413

Documentation of high resolution solar resource assessment (10km) for  

Open Energy Info (EERE)

for for Ethiopia provided by DLR Dataset Summary Description (Abstract): Documentation of the satellite-based high resolution solar resource assessment for Ethiopia provided by DLR. The high resolution solar data (10kmx10km) provide country maps of the annual and monthly sums of hourly global horizontal and direct normal irradiance (GHI and DNI) for the year 2000, 2001 and 2002. Additionally, for selected sites hourly values of GHI and DNI are provided.The Documentation gives an overview about the used input data and used methodology, shows example maps and describes a comparison with ground data (if provided by the country) (Purpose): The data are helpful for the assessment of the solar potential of the country and can give project developer a first impression of the solar resource of the country. For the selected

414

Collimator application for microchannel plate image intensifier resolution improvement  

DOE Patents (OSTI)

A collimator is included in a microchannel plate image intensifier (MCPI). Collimators can be useful in improving resolution of MCPIs by eliminating the scattered electron problem and by limiting the transverse energy of electrons reaching the screen. Due to its optical absorption, a collimator will also increase the extinction ratio of an intensifier by approximately an order of magnitude. Additionally, the smooth surface of the collimator will permit a higher focusing field to be employed in the MCP-to-collimator region than is currently permitted in the MCP-to-screen region by the relatively rough and fragile aluminum layer covering the screen. Coating the MCP and collimator surfaces with aluminum oxide appears to permit additional significant increases in the field strength, resulting in better resolution.

Thomas, Stanley W. (Livermore, CA)

1996-02-27T23:59:59.000Z

415

Collimator application for microchannel plate image intensifier resolution improvement  

DOE Patents (OSTI)

A collimator is included in a microchannel plate image intensifier (MCPI). Collimators can be useful in improving resolution of MCPIs by eliminating the scattered electron problem and by limiting the transverse energy of electrons reaching the screen. Due to its optical absorption, a collimator will also increase the extinction ratio of an intensifier by approximately an order of magnitude. Additionally, the smooth surface of the collimator will permit a higher focusing field to be employed in the MCP-to-collimator region than is currently permitted in the MCP-to-screen region by the relatively rough and fragile aluminum layer covering the screen. Coating the MCP and collimator surfaces with aluminum oxide appears to permit additional significant increases in the field strength, resulting in better resolution. 2 figs.

Thomas, S.W.

1996-02-27T23:59:59.000Z

416

High-Resolution Field Effect Sensing of Ferroelectric Charges  

Science Conference Proceedings (OSTI)

Nanoscale manipulation of surface charges and their imaging are essential for understanding local electronic behaviors of polar materials and advanced electronic devices. Electrostatic force microscopy and Kelvin probe force microscopy have been extensively used to probe and image local surface charges responsible for electrodynamics and transport phenomena. However, they rely on the weak electric force modulation of cantilever that limits both spatial and temporal resolutions. Here we present a field effect transistor embedded probe that can directly image surface charges on a length scale of 25 nm and a time scale of less than 125 {micro}s. On the basis of the calculation of net surface charges in a 25 nm diameter ferroelectric domain, we could estimate the charge density resolution to be as low as 0.08 {micro}C/cm{sup 2}, which is equivalent to 1/20 electron per nanometer square at room temperature.

Ko, Hyoungsoo [Samsung Advanced Institute of Science and Technology, Korea; Ryu, Kyunghee [Kookmin University; Park, Hongsik [Samsung Advanced Institute of Science and Technology, Korea; Park, Chulmin [Samsung Advanced Institute of Science and Technology, Korea; Jeon, Daeyoung [Samsung Advanced Institute of Science and Technology, Korea; Kim, Yong Kwan [Samsung Advanced Institute of Science and Technology, Korea; Jung, Juhwan [Samsung Advanced Institute of Science and Technology, Korea; Min, Dong-Ki [Samsung Advanced Institute of Science and Technology, Korea; Kim, Yunseok [Max-Planck-Institut fur Mikrostrukturphysik, Germany; Lee, Ho Nyung [ORNL; Park, Yoondong [Samsung Advanced Institute of Science and Technology, Korea; Shin, Hyunjung [Kookmin University; Hong, Seungbum [Samsung Advanced Institute of Science and Technology, Korea

2011-01-01T23:59:59.000Z

417

High-resolution, cryogenic, side-entry type specimen stage  

DOE Patents (OSTI)

A high-resolution, cryogenic side-entry type specimen stage includes a copper block within which a specimen can be positioned in the electron beam of an electron microscope, one end of the copper block constituting a specimen heat exchanger, means for directing a flow of helium at cryogenic temperature into the heat exchanger, and electrical leads running from the specimen to the exterior of the microscope for four point D.C. electrical resistivity measurements.

King, Wayne E. (Woodridge, IL); Merkle, Karl L. (Clarendon Hills, IL)

1979-01-01T23:59:59.000Z

418

Resolution of reservoir scale electrical anisotropy from marine CSEM data  

Science Conference Proceedings (OSTI)

A combination of 1D and 3D forward and inverse solutions is used to quantify the sensitivity and resolution of conventional controlled source electromagnetic (CSEM) data collected using a horizontal electric dipole source to transverse electrical anisotropy located in a deep-water exploration reservoir target. Since strongly anisotropic shale layers have a vertical resistivity that can be comparable to many reservoirs, we examine how CSEM can discriminate confounding shale layers through their characteristically lower horizontal resistivity. Forward modeling demonstrates that the sensitivity to reservoir level anisotropy is very low compared to the sensitivity to isotropic reservoirs, especially when the reservoir is deeper than about 2 km below the seabed. However, for 1D models where the number of inversion parameters can be fixed to be only a few layers, both vertical and horizontal resistivity of the reservoir can be well resolved using a stochastic inversion. We find that the resolution of horizontal resistivity increases as the horizontal resistivity decreases. We show that this effect is explained by the presence of strong horizontal current density in anisotropic layers with low horizontal resistivity. Conversely, when the reservoir has a vertical to horizontal resistivity ratio of about 10 or less, the current density is vertically polarized and hence has little sensitivity to the horizontal resistivity. Resistivity anisotropy estimates from 3D inversion for 3D targets suggest that resolution of reservoir level anisotropy for 3D targets will require good a priori knowledge of the background sediment conductivity and structural boundaries.

Brown, V.; Hoversten, G.M.; Key, K.; Chen, J.

2011-10-01T23:59:59.000Z

419

HIGH-RESOLUTION CH OBSERVATIONS OF TWO TRANSLUCENT MOLECULAR CLOUDS  

SciTech Connect

We present high-resolution (1.'3 x 1.'6) observations of the CH {sup 2}{pi}{sub 1/2} (F = 1-1) emission line at 3335 MHz in two high-latitude translucent clouds, MBM 3 and 40. At the assumed cloud distances, the angular resolution corresponds to {approx}0.05 pc, nearly an order of magnitude better than previous studies. Comparisons of the CH emission with previously obtained CO(1-0) data are difficult to interpret: the CO and CH line emission correlates in MBM 40 but not in MBM 3. In both clouds, there is a spatial offset in the peak emission, and perhaps in velocity for MBM 40. The difference in emission characteristics for the two tracers are noticeable in these two nearby clouds because of the high spatial resolution. Since both CH and CO are deemed to be reliable tracers of H{sub 2}, our results indicate that more care should be taken when using one of these tracers to determine the mass of a nearby molecular cloud.

Chastain, Raymond J. [Department of Physics and Astronomy, Louisiana State University, 368 Nicholson Hall, Tower Dr. Baton Rouge, LA 70803 (United States); Cotten, David; Magnani, Loris [Department of Physics and Astronomy, University of Georgia, Athens, GA 30602 (United States)

2010-01-15T23:59:59.000Z

420

Viewing Geometry Dependencies in MODIS Cloud Products  

Science Conference Proceedings (OSTI)

Characterizing the earth’s global cloud field is important for the proper assessment of the global radiation budget and hydrologic cycle. This characterization can only be achieved with satellite measurements. For complete daily coverage across ...

B. C. Maddux; S. A. Ackerman; S. Platnick

2010-09-01T23:59:59.000Z

Note: This page contains sample records for the topic "modis moderate 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

Cloud detection of MODIS multispectral images  

Science Conference Proceedings (OSTI)

Methods coming from statistics and pattern recognition to estimate the cloud mask from radiance measured by visible and infrared sensors onboard satellites are gaining greater and greater consideration for their ability to properly exploit the ...

Loredana Murino; Umberto Amato; Maria Francesca Carfora; Anestis Antoniadis; Bormin Huang; W. Paul Menzel; Carmine Serio

422

ORNL DAAC MODIS Subsetting and Visualization tool  

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

Architecture: WebGIS System Architecture: ESRI ArcIMS 9.3 Image Server Extract Server Query Server Minnesota Mapserver 5.2.0 WCS Server v1.0.0 MS SQL Server 2005 ESRI ArcSDE 9.3...

423

FURTHER STUDIES ON THE RELATIONSHIP BETWEEN EXPOSURE TIME AND DEPTH OF DAMAGE OF MODERATE AND SEVERE CUTANEOUS BURNS  

SciTech Connect

To extend our earlier studies on the relationship between exposure time and depth of damage of moderate and severe burns, injuries were produced by each of six radiant exposures delivered during varying exposure times. The exposures investigated were: 5, 8, 10, 13, 16, and 20 calories per square centimeter. Within this range, as the radiant exposure increased, the exposure time for the production of maximum damage also increased. Injury from a given radiant exposure was less with exposure times either longer or shorter than some immediate time which led to the most severe injury. The relationship between steam bleb formation and decreased depth of injury from short exposure times is pointed out. When the superficial layers of the skin become so hot that vaporization of tissue fluid occurs, energy which might otherwise damage the deep layers is diverted by the conversion of water to steam. For radiant exposures between 8 cal/cm/sup 2/ and 20 cal/cm/sup 2/ delivered with a square pulse, it is possible to predict with fair accuracy the exposure time which will result in the deepest burn. (auth)

Payne, F.W.; Hinshaw, J.R.

1957-10-31T23:59:59.000Z

424

Interpretation of Strong Short-Term Central Perturbations in the Light Curves of Moderate-Magnification Microlensing Events  

E-Print Network (OSTI)

To improve the planet detection efficiency, current planetary microlensing experiments are focused on high-magnification events searching for planetary signals near the peak of lensing light curves. However, it is known that central perturbations can also be produced by binary companions and thus it is important to distinguish planetary signals from those induced by binary companions. In this paper, we analyze the light curves of microlensing events OGLE-2007-BLG-137/MOA-2007-BLG-091, OGLE-2007-BLG-355/MOA-2007-BLG-278, and MOA-2007-BLG-199/OGLE-2007-BLG-419, for all of which exhibit short-term perturbations near the peaks of the light curves. From detailed modeling of the light curves, we find that the perturbations of the events are caused by binary companions rather than planets. From close examination of the light curves combined with the underlying physical geometry of the lens system obtained from modeling, we find that the short time-scale caustic-crossing feature occurring at a low or a moderate base ...

Han, C; Kim, D; Udalski, A; Abe, F; Monard, L A B; McCormick, J; Szymanski, M K; Kubiak, M; Pietrzynski, G; Soszynski, I; Szewczyk, O; Wyrzykowski, L; Ulaczyk, K; Bond, I A; Botzler, C S; Fukui, A; Furusawa, K; Hearnshaw, J B; Itow, Y; Kamiya, K; Kilmartin, P M; Korpela, A; Lin, W; Ling, C H; Masuda, K; Matsubara, Y; Miyake, N; Muraki, Y; Nagaya, M; Ohnishi, K; Tokumura, T; Perrott, Y C; Rattenbury, N; Saito, To; Sako, T; Skuljan, L; Sullivan, D S; Sumi, T; Sweatman, W L; Tristram, P J; Yock, P C M; Allen, W; Christie, G W; DePoy, D L; Dong, S; Gaudi, B S; Gould, A; Lee, C -U; Natusch, T; Park, B -G; Pogge, R W; Albrow, M D; Allan, A; Batista, V; Beaulieu, J P; Bennett, D P; Brillant, S; Bode, M; Bramich, D M; Burgdorf, M; Caldwell, J A R; Calitz, H; Cassan, A; Corrales, E; Dieters, S; Prester, D D; Dominik, M; Donatowicz, J; Fouque, P; Greenhill, J; Hill, K; Hoffman, M; Horne, K; Jorgensen, U G; Kains, N; Kubas, D; Marquette, J B; Martin, R; Meintjes, P; Menzies, J; Pollard, K R; Sahu, K C; Snodgrass, C; Steele, I; Street, R; Tsapras, Y; Wambsganss, J; Williams, A; Zub, M

2009-01-01T23:59:59.000Z

425

NREL GIS Data: Continental United States Photovoltaic High Resolution |  

Open Energy Info (EERE)

Photovoltaic High Resolution Photovoltaic High Resolution Dataset Summary Description Abstract: Monthly and annual average solar resource potential for 48 Contiguous United States. Purpose: Provide information on the solar resource potential for the 48 contiguous states. Supplemental_Information: This data provides monthly average and annual average daily total solar resource averaged over surface cells of 0.1 degrees in both latitude and longitude, or about 10 km in size. This data was developed using the State University of New York/Albany satellite radiation model. This model was developed by Dr. Richard Perez and collaborators at the National Renewable Energy Laboratory and other universities for the U.S. Department of Energy. Specific information about this model can be found in Perez, et al. (2002). This model uses hourly radiance images from geostationary weather satellites, daily snow cover data, and monthly averages of atmospheric water vapor, trace gases, and the amount of aerosols in the atmosphere to calculate the hourly total insolation (sun and sky) falling on a horizontal surface. 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 avalable at a 10km 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.

426

High Resolution Atmospheric Modeling for Wind Energy Applications  

SciTech Connect

The ability of the WRF atmospheric model to forecast wind speed over the Nysted wind park was investigated as a function of time. It was found that in the time period we considered (August 1-19, 2008), the model is able to predict wind speeds reasonably accurately for 48 hours ahead, but that its forecast skill deteriorates rapidly after 48 hours. In addition, a preliminary analysis was carried out to investigate the impact of vertical grid resolution on the forecast skill. Our preliminary finding is that increasing vertical grid resolution does not have a significant impact on the forecast skill of the WRF model over Nysted wind park during the period we considered. Additional simulations during this period, as well as during other time periods, will be run in order to validate the results presented here. Wind speed is a difficult parameter to forecast due the interaction of large and small length scale forcing. To accurately forecast the wind speed at a given location, the model must correctly forecast the movement and strength of synoptic systems, as well as the local influence of topography / land use on the wind speed. For example, small deviations in the forecast track or strength of a large-scale low pressure system can result in significant forecast errors for local wind speeds. The purpose of this study is to provide a preliminary baseline of a high-resolution limited area model forecast performance against observations from the Nysted wind park. Validating the numerical weather prediction model performance for past forecasts will give a reasonable measure of expected forecast skill over the Nysted wind park. Also, since the Nysted Wind Park is over water and some distance from the influence of terrain, the impact of high vertical grid spacing for wind speed forecast skill will also be investigated.

Simpson, M; Bulaevskaya, V; Glascoe, L; Singer, M

2010-03-18T23:59:59.000Z

427

High-resolution radio observations of submillimetre galaxies  

E-Print Network (OSTI)

We have produced sensitive, high-resolution radio maps of 12 SMGs in the Lockman Hole using combined MERLIN and VLA data at a frequency of 1.4 GHz. Integrating for 350hr yielded an r.m.s. noise of 6.0 uJy/beam and a resolution of 0.2-0.5". For the first time, wide-field data from the two arrays have been combined in the (u,v) plane and the bandwidth smearing response of the VLA data has been removed. All of the SMGs are detected in our maps as well as sources comprising a non-submm luminous control sample. We find evidence that SMGs are more extended than the general uJy radio population and that therefore, unlike in local ULIRGs, the starburst component of the radio emission is extended and not confined to the galactic nucleus. For the eight sources with redshifts we measure linear sizes between 1 and 8 kpc with a median of 5 kpc. Therefore, they are in general larger than local ULIRGs which may support an early-stage merger scenario for the starburst trigger. X-rays betray AGN in six of the 33 sources in the combined sample. All but one of these are in the control sample, suggesting a lower incidence of AGN amongst the submm-luminous galaxies which is, in turn, consistent with increased X-ray absorption in these dust-obscured starbursts. Only one of our sources is resolved into multiple, distinct components with our high-resolution data. Finally, compared to a previous study of faint radio sources in the GOODS-N field we find systematically smaller source sizes and no evidence for a tail extending to ~4". Possible reasons for this are discussed.

A. D. Biggs; R. J. Ivison

2007-12-18T23:59:59.000Z

428

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.

429

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.

430

Atomic Resolution Imaging with a sub-50 pm Electron Probe  

SciTech Connect

Using a highly coherent focused electron probe in a 5th order aberration-corrected transmission electron microscope, we report on resolving a crystal spacing less than 50 pm. Based on the geometrical source size and residual coherent and incoherent axial lens aberrations, an electron probe is calculated, which is theoretically capable of resolving an ideal 47 pm spacing with 29percent contrast. Our experimental data show the 47 pm spacing of a Ge 114 crystal imaged with 11-18percent contrast at a 60-95percent confidence level, providing the first direct evidence for sub 50-pm resolution in ADF STEM imaging.

Erni, Rolf P.; Rossell, Marta D.; Kisielowski, Christian; Dahmen, Ulrich

2009-03-02T23:59:59.000Z

431

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.

432

Heuristic optimization in penumbral image for high resolution reconstructed image  

SciTech Connect

Penumbral imaging is a technique which uses the fact that spatial information can be recovered from the shadow or penumbra that an unknown source casts through a simple large circular aperture. The size of the penumbral image on the detector can be mathematically determined as its aperture size, object size, and magnification. Conventional reconstruction methods are very sensitive to noise. On the other hand, the heuristic reconstruction method is very tolerant of noise. However, the aperture size influences the accuracy and resolution of the reconstructed image. In this article, we propose the optimization of the aperture size for the neutron penumbral imaging.

Azuma, R.; Nozaki, S. [Transdisciplinary Research Organization for Subtropics and Island Studies, University of the Ryukyus, Okinawa 903-0213 (Japan); Fujioka, S. [Institute of Laser Engineering, Osaka University, Osaka 565-0871 (Japan); Chen, Y. W. [College of Information Science and Engineering, Ritsumeikan University, Shiga 525-8577 (Japan); Namihira, Y. [Faculty of Engineering, University of the Ryukyus, Okinawa 903-0213 (Japan)

2010-10-15T23:59:59.000Z

433

Toroidal magnetic detector for high resolution measurement of muon momenta  

DOE Patents (OSTI)

A muon detector system including central and end air-core superconducting toroids and muon detectors enclosing a central calorimeter/detector are described in this paper. Muon detectors are positioned outside of toroids and all muon trajectory measurements are made in a nonmagnetic environment. Internal support for each magnet structure is provided by sheets, located at frequent and regularly spaced azimuthal planes, which interconnect the structural walls of the toroidal magnets. In a preferred embodiment, the shape of the toroidal magnet volume is adjusted to provide constant resolution over a wide range of rapidity.

Bonanos, P.

1990-11-30T23:59:59.000Z

434

Toroidal magnetic detector for high resolution measurement of muon momenta  

DOE Patents (OSTI)

A muon detector system including central and end air-core superconducting toroids and muon detectors enclosing a central calorimeter/detector. Muon detectors are positioned outside of toroids and all muon trajectory measurements are made in a nonmagnetic environment. Internal support for each magnet structure is provided by sheets, located at frequent and regularly spaced azimuthal planes, which interconnect the structural walls of the toroidal magnets. In a preferred embodiment, the shape of the toroidal magnet volume is adjusted to provide constant resolution over a wide range of rapidity. 4 figs.

Bonanos, P.

1992-01-07T23:59:59.000Z

435

Clickstream data yields high-resolution maps of science  

SciTech Connect

Intricate maps of science have been created from citation data to visualize the structure of scientific activity. However, most scientific publications are now accessed online. Scholarly web portals record detailed log data at a scale that exceeds the number of all existing citations combined. Such log data is recorded immediately upon publication and keeps track of the sequences of user requests (clickstreams) that are issued by a variety of users across many different domains. Given these advantagees of log datasets over citation data, we investigate whether they can produce high-resolution, more current maps of science.

Bollen, Johan [Los Alamos National Laboratory; Van De Sompel, Herbert [Los Alamos National Laboratory; Hagberg, Aric [Los Alamos National Laboratory; Bettencourt, Luis [Los Alamos National Laboratory; Chute, Ryan [Los Alamos National Laboratory; Rodriguez, Marko A [Los Alamos National Laboratory; Balakireva, Lyudmila [Los Alamos National Laboratory

2009-01-01T23:59:59.000Z

436

Resolution-independent surface rendering using programmable graphics hardware  

DOE Patents (OSTI)

Surfaces defined by a Bezier tetrahedron, and in particular quadric surfaces, are rendered on programmable graphics hardware. Pixels are rendered through triangular sides of the tetrahedra and locations on the shapes, as well as surface normals for lighting evaluations, are computed using pixel shader computations. Additionally, vertex shaders are used to aid interpolation over a small number of values as input to the pixel shaders. Through this, rendering of the surfaces is performed independently of viewing resolution, allowing for advanced level-of-detail management. By individually rendering tetrahedrally-defined surfaces which together form complex shapes, the complex shapes can be rendered in their entirety.

Loop, Charles T. (Bellevue, WA); Blinn, James Frederick (Bellevue, WA)

2008-12-16T23:59:59.000Z

437

Visualization of High Resolution Spatial Mass Spectrometric Data during Acquisition  

Science Conference Proceedings (OSTI)

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

438

Operation Castle. Project 18. 3. High-resolution spectroscopy  

SciTech Connect

The high-resolution work undertaken at Castle with three spectrographs of relatively high dispersion is described and analyzed. Profitable results were obtained from the spectra taken with the JACO 21-foot Wadsworth-mount spectrograph, mainly the highest violet cutoff to date and a very predominant NO/sub 2/ spectrum in absorption. There is a definite indication that the NO/sub 2/ exists in a state of excitation above that observed at ordinary room temperature. The observation as a function of time of the formation NO/sub 2/, which conceivably can be formed in different ways during different intervals of the explosion, would be of great interest.

Beck, C.A.; Campbell, J.H.

1985-09-01T23:59:59.000Z

439

Optimization in multi-scale segmentation of high-resolution satellite images for artificial feature recognition  

Science Conference Proceedings (OSTI)

Multi-resolution segmentation, as one of the most popular approaches in object-oriented image segmentation, has been greatly enabled by the advent of the commercial software, eCognition. However, the application of multi-resolution segmentation still ...

J. Tian; D. -M. Chen

2007-10-01T23:59:59.000Z

440

The Value of a Variable Resolution Approach to Numerical Weather Prediction  

Science Conference Proceedings (OSTI)

It is shown that a numerical weather prediction system with variable resolution, higher in the early forecast range and lower afterward, provides more skilful forecasts than a system with constant resolution. Results indicate that the advantage ...

Roberto Buizza

2010-04-01T23:59:59.000Z

Note: This page contains sample records for the topic "modis moderate 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

Very High-Resolution Regional Climate Simulations over Scandinavia—Present Climate  

Science Conference Proceedings (OSTI)

The hydrological cycle on a regional scale is poorly represented with a present-day coarse resolution general circulation model (GCM). With a dynamical downscaling technique, in which a regional higher-resolution climate model (RCM) is nested ...

Ole B. Christensen; Jens H. Christensen; Bennert Machenhauer; Michael Botzet

1998-12-01T23:59:59.000Z

442

The Vertical Resolution of the Kennedy Space Center 50-MHz Wind Profiler  

Science Conference Proceedings (OSTI)

The effective vertical resolution of the Kennedy Space Center 50-MHz Doppler radar wind profiler is determined using vertical wavenumber spectra and temporal coherence. The resolution ranges from being Nyquist limited at 300 m to as coarse as 900 ...

Francis J. Merceret

1999-09-01T23:59:59.000Z

443

Spatial Resolution Impacts on National Meteorological Center Nested Grid Model Simulations  

Science Conference Proceedings (OSTI)

Forecasts from different resolution versions of the National Meteorological Center Nested Grid Model (NGM) are compared for two case studies to assess an optimal ratio of model vertical and horizontal resolutions. Four combinations are considered:...

David D. Houghton; Ralph A. Petersen; Richard L. Wobus

1993-05-01T23:59:59.000Z

444

Effects of Rain Gauge Temporal Resolution on the Specification of a Z–R Relationship  

Science Conference Proceedings (OSTI)

The weather radar is an efficient alternative for measuring spatially varying rainfall covering a large area at a high temporal resolution. This paper studies the impact of rainfall gauge temporal resolution on optimal relationships between radar ...

Punpim Puttaraksa Mapiam; Nutchanart Sriwongsitanon; Siriluk Chumchean; Ashish Sharma

2009-07-01T23:59:59.000Z

445

Effects of Resolution of Satellite-based Rainfall Estimates on Hydrologic Modeling Skill at Different Scales  

Science Conference Proceedings (OSTI)

Uncertainty due to resolution of current satellite-based rainfall products is believed to be an important source of error in applications of hydrologic modeling and forecasting systems. A method to account for input’s resolution and to accurately ...

Humberto Vergara; Yang Hong; Jonathan J. Gourley; Emmanouil N. Anagnostou; Viviana Maggioni; Dimitrios Stampoulis; Pierre-Emmanuel Kirstetter

446

The NCEM one-Angstrom microscope project reaches 0.89 Angstrom resolution  

SciTech Connect

Sub-Angstrom transmission electron microscopy to a resolution of 0.89 has been achieved at the National Center for Electron Microscopy and is available to electron microscopists who have a requirement for this level of resolution.

O'Keefe, Michael A.; Wang, Y.C.

2000-02-17T23:59:59.000Z

447

High-Resolution Doppler Lidar for Boundary Layer and Cloud Research  

Science Conference Proceedings (OSTI)

The high-resolution Doppler lidar (HRDL) was developed to provide higher spatial, temporal, and velocity resolution and more reliable performance than was previously obtainable with CO2-laser-based technology. The improved performance is needed ...

Christian J. Grund; Robert M. Banta; Joanne L. George; James N. Howell; Madison J. Post; Ronald A. Richter; Ann M. Weickmann

2001-03-01T23:59:59.000Z

448

Home Energy Audits Can Help You Keep That New Year's Resolution...  

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

Home Energy Audits Can Help You Keep That New Year's Resolution Home Energy Audits Can Help You Keep That New Year's Resolution January 3, 2013 - 8:25am Addthis Blower door test...

449

High-resolution NMR spectroscopy of biological tissues using projected Magic Angle Spinning  

E-Print Network (OSTI)

High-resolution NMR spectroscopy of biological tissues using486-5744 pines@berkeley.edu NMR spectroscopy of biologicalAbstract: High-resolution NMR spectra of materials subject

Martin, Rachel W.; Jachmann, Rebecca C.; Sakellariou, Dimitris; Nielsen, Ulla Gro; Pines, Alexander

2005-01-01T23:59:59.000Z

450

High-Precision, High-Resolution Measurements of Absorption in the Oxygen A-Band  

Science Conference Proceedings (OSTI)

Issues arising in the application of high-resolution, high-precision spectroscopy to remote sensing are discussed in the context of deriving surface pressure from absorption in the O2 A-band. This application requires spectral resolution ...

D. M. O’Brien; S. A. English; Grant Da Costa

1997-02-01T23:59:59.000Z

451

The Use of a High-Resolution Standardized Precipitation Index for Drought Monitoring and Assessment  

Science Conference Proceedings (OSTI)

A high-resolution drought-monitoring tool was developed to assess drought on multiple time scales using the standardized precipitation index (SPI). Daily precipitation data at 4-km resolution are obtained from the Advanced Hydrologic Prediction ...

D. Brent McRoberts; John W. Nielsen-Gammon

2012-01-01T23:59:59.000Z

452

Regulatory Impact Review Implementation of Inter-American Tropical Tuna Commission Resolutions Adopted in  

E-Print Network (OSTI)

Regulatory Impact Review Implementation of Inter-American Tropical Tuna Commission Resolutions to implement the decisions of the IATTC. The Tuna Conventions Act (16 U.S.C. 951-961) authorizes the Secretary the Resolution on Tuna Conservation 2011-2013 (C-11-01), the Resolution Prohibiting Fishing on Data Buoys (C-11

453

Implementation and optimization of a new super-resolution technique in PET imaging  

Science Conference Proceedings (OSTI)

Super-Resolution (SR) techniques are used in PET imaging to generate a high-resolution image by combining multiple low-resolution images that have been acquired from different points of view (POV). In this paper, we propose a new implementation of the ...

Guoping Chang; Tinsu Pan; John W. Clark; Osama R. Mawlawi

2009-06-01T23:59:59.000Z

454

Experimental application of process technology to the creation and adoption of online dispute resolution  

Science Conference Proceedings (OSTI)

We report on the development of formal models of alternative dispute resolution processes, the creation of an online dispute resolution system based on this model and initial experimental analysis of this system. Early results suggest that formalizing ... Keywords: mediation, online dispute resolution, process technology

Ethan Katsh; Leon J. Osterweil; Norman K. Sondheimer; Daniel Rainey

2006-05-01T23:59:59.000Z

455

FREE RESOLUTIONS OVER SHORT LOCAL RINGS LUCHEZAR L. AVRAMOV, SRIKANTH B. IYENGAR, AND LIANA M. SEGA  

E-Print Network (OSTI)

FREE RESOLUTIONS OVER SHORT LOCAL RINGS LUCHEZAR L. AVRAMOV, SRIKANTH B. IYENGAR, AND LIANA M. S¸EGA To the memory of our friend and colleague Anders Frankild. Abstract. The structure of minimal free resolutions This paper is concerned with the structure of minimal free resolutions of finite (that is, finitely generated

Sega, Liana - Department of Mathematics and Statistics, University of Missouri

456

Compact high resolution isobar separator for study of exotic decays  

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

Compact high resolution isobar separator for study of Compact high resolution isobar separator for study of exotic decays A. Piechaczek 1 , V. Shchepunov 1 , H. K. Carter 1 J. C. Batchelder 1 , E. F. Zganjar 2 1 UNIRIB, Oak Ridge Associated Universities, Oak Ridge, TN 37830 2 Department of Physics & Astronomy, Louisiana State University, Baton Rouge, LA 70803 A compact isobar separator, based on the Multi-Pass-Time-of-Flight (MTOF) principle, is developed [1]. A mass resolving power (MRP) as spectrometer of 110,000 (FWHM) is achieved in Time-of-Flight spectra of N 2 molecules (no physical ion separation) after 300 laps or ToF = 9.7 ms. Operated as a separator [2], molecules of N 2 and CO with ∆M/M = 1/2500 or 10.433 MeV are separated with a Bradbury Nielsen electrostatic ion gate, and the MRP (FWHM) is about 40,000 after 120 laps. In the separator as well as in

457

A new “Variable Resolution Associative Memory” for High Energy Physics  

E-Print Network (OSTI)

We describe an important advancement for the Associative Memory device (AM). The AM is a VLSI processor for pattern recognition based on Content Addressable Memory (CAM) architecture. The AM is optimized for on-line track finding in high-energy physics experiments. Pattern matching is carried out finding track candidates in coarse resolution “roads”. A large AM bank stores all trajectories of interest, called “patterns”, for a given detector resolution. The AM extracts roads compatible with a given event during detector read-out. Two important variables characterize the quality of the AM bank: its “coverage” and the level of “found fakes”. The coverage, which describes the geometric efficiency of a bank, is defined as the fraction of tracks that match at least a pattern in the bank. Given a certain road size, the coverage of the bank can be increased just adding patterns to the bank, while the number of found fakes unfortunately is roughly proportional to this number of patterns in the bank. M...

Annovi, A; The ATLAS collaboration; Beretta, M; Bossini, E; Crescioli, F; Dell'Orso, M; Giannetti, P; Hoff, J; Liberali, V; Liu, T; Magalotti, D; Piendibene, M; Sacco, A; Schoening, A; Soltveit, H K; Stabile, A; Tripiccione, R; Vitillo, R; Volpi, G

2011-01-01T23:59:59.000Z

458

A new Variable Resolution Associative Memory for High Energy Physics  

E-Print Network (OSTI)

We describe an important advancement for the Associative Memory device (AM). The AM is a VLSI processor for pattern recognition based on Content Addressable Memory (CAM) architecture. The AM is optimized for on-line track finding in high-energy physics experiments. Pattern matching is carried out finding track candidates in coarse resolution “roads”. A large AM bank stores all trajectories of interest, called “patterns”, for a given detector resolution. The AM extracts roads compatible with a given event during detector read-out. Two important variables characterize the quality of the AM bank: its “coverage” and the level of “found fakes”. The coverage, which describes the geometric efficiency of a bank, is defined as the fraction of tracks that match at least a pattern in the bank. Given a certain road size, the coverage of the bank can be increased just adding patterns to the bank, while the number of found fakes unfortunately is roughly proportional to this number of patterns in the bank. M...

Annovi, A; The ATLAS collaboration; Beretta, M; Bossini, E; Crescioli, F; Dell'Orso, M; Giannetti, P; Hoff, J; Liberali, V; Liu, T; Magalotti, D; Piendibene, M; Sacco, A; Schoening, A; Soltveit, H K; Stabile, A; Tripiccione, R; Vitillo, R; Volpi, G

2011-01-01T23:59:59.000Z

459

A High-Resolution Solution of the Ribosome Structure  

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

Resolution Solution of the Ribosome Structure Resolution Solution of the Ribosome Structure Researchers using high-brilliance x-ray beams from the Structural Biology Center undulator beamline 19-ID at the Advanced Photon Source have obtained a detailed picture of how the ribosome allows accurate translation of the genetic code. What they found offers new information on how proteins are formed and how they create the chain of proteins that make up an organism. The rRNA of the 30S ribosomal subunit, as determined at the Structural Biology Center. The parts of the rRNA as shown here are: messenger RNA (purple), head (green), central domain ((blue), and body (red) with H44 in cyan. The gold ribbons represent the binding from the anticodon stem loop. Left: The rRNA of the 30S ribosomal subunit, as determined at the Structural Biology Center. The parts of the rRNA as shown here are: messenger RNA (purple), head (green), central domain ((blue), and body (red) with H44 in cyan. The gold ribbons represent the binding from the anticodon stem loop. (Courtesy of the Medical Research Council Laboratory of Molecular Biology, UK)

460

A Unitary Anesthetic Binding Site at High Resolution  

DOE Green Energy (OSTI)

Propofol is the most widely used injectable general anesthetic. Its targets include ligand-gated ion channels such as the GABA{sub A} receptor, but such receptor-channel complexes remain challenging to study at atomic resolution. Until structural biology methods advance to the point of being able to deal with systems such as the GABA{sub A} receptor, it will be necessary to use more tractable surrogates to probe the molecular details of anesthetic recognition. We have previously shown that recognition of inhalational general anesthetics by the model protein apoferritin closely mirrors recognition by more complex and clinically relevant protein targets; here we show that apoferritin also binds propofol and related GABAergic anesthetics, and that the same binding site mediates recognition of both inhalational and injectable anesthetics. Apoferritin binding affinities for a series of propofol analogs were found to be strongly correlated with the ability to potentiate GABA responses at GABA{sub A} receptors, validating this model system for injectable anesthetics. High resolution x-ray crystal structures reveal that, despite the presence of hydrogen bond donors and acceptors, anesthetic recognition is mediated largely by van der Waals forces and the hydrophobic effect. Molecular dynamics simulations indicate that the ligands undergo considerable fluctuations about their equilibrium positions. Finally, apoferritin displays both structural and dynamic responses to anesthetic binding, which may mimic changes elicited by anesthetics in physiologic targets like ion channels.

Vedula, L. Sangeetha; Brannigan, Grace; Economou, Nicoleta J.; Xi, Jin; Hall, Michael A.; Liu, Renyu; Rossi, Matthew J.; Dailey, William P.; Grasty, Kimberly C.; Klein, Michael L.; Eckenhoff, Roderic G.; Loll, Patrick J.; (Drexel-MED); (UPENN)

2009-10-21T23:59:59.000Z

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461

Atomic-Resolution STEM at Low Primary Energies  

Science Conference Proceedings (OSTI)

Aberration-corrected scanning transmission electron microscopes (STEMs) can now produce electron probes as small as 1 {angstrom} at 60 keV. This level of performance allows individual light atoms to be imaged in various novel materials including graphene, monolayer boron nitride, and carbon nanotubes. Operation at 60 keV avoids direct knock-on damage in such materials, but some radiation damage often remains, and limits the maximum usable electron dose. Elemental identification by electron energy loss spectroscopy (EELS) is then usefully supplemented by annular dark-field (ADF) imaging, for which the signal is much larger and the spatial resolution significantly better. Because of its strong dependence on the atomic number Z, ADF can be used to identify the chemical type of individual atoms, both heavy and light. We review the instrumental requirements for atomic resolution imaging at 60 keV and lower energies, and we illustrate the kinds of studies that have now become possible by ADF images of graphene, monolayer BN, and single-wall carbon nanotubes, and by ADF images and EEL spectra of carbon nanotubes containing nanopods filled with single atoms of Er. We then discuss likely future developments.

Krivanek, Ondrej L. [Nion Co; Chisholm, Matthew F [ORNL; Dellby, N. [Nion Company, WA; Murfitt, M. F. [Nion Company, WA

2011-01-01T23:59:59.000Z

462

Atomic Resolution Coherent Diffractive Imaging and Ultrafast Science  

Science Conference Proceedings (OSTI)

A major scientific challenge is determining the 3-D atomic structure of small nanostructures, including single molecules. Coherent diffractive imaging (CDI) is a promising approach. Recent progress has demonstrated coherent diffraction patterns can be recorded from individual nanostructures and phased to reconstruct their structure. However, overcoming the dose limit imposed by radiation damage is a major obstacle toward the full potential of CDI. One approach is to use ultrafast x-ray or electron pulses. In electron diffraction, amplitudes recorded in a diffraction pattern are unperturbed by lens aberrations, defocus, and other microscope resolution-limiting factors. Sub-A signals are available beyond the information limit of direct imaging. Significant contrast improvement is obtained compared to high-resolution electron micrographs. progress has also been made in developing time-resolved electron diffraction and imaging for the study of ultrafast dynamic processes in materials. This talk will cover these crosscutting issues and the convergence of electron and x-ray diffraction techniques toward structure determination of single molecules.

Zuo, Jian-min [University of Illinois

2011-01-12T23:59:59.000Z

463

A Unitary Anesthetic Binding Site at High Resolution  

DOE Green Energy (OSTI)

Propofol is the most widely used injectable general anesthetic. Its targets include ligand-gated ion channels such as the GABA{sub A} receptor, but such receptor-channel complexes remain challenging to study at atomic resolution. Until structural biology methods advance to the point of being able to deal with systems such as the GABA{sub A} receptor, it will be necessary to use more tractable surrogates to probe the molecular details of anesthetic recognition. We have previously shown that recognition of inhalational general anesthetics by the model protein apoferritin closely mirrors recognition by more complex and clinically relevant protein targets; here we show that apoferritin also binds propofol and related GABAergic anesthetics, and that the same binding site mediates recognition of both inhalational and injectable anesthetics. Apoferritin binding affinities for a series of propofol analogs were found to be strongly correlated with the ability to potentiate GABA responses at GABA{sub A} receptors, validating this model system for injectable anesthetics. High resolution x-ray crystal structures reveal that, despite the presence of hydrogen bond donors and acceptors, anesthetic recognition is mediated largely by van der Waals forces and the hydrophobic effect. Molecular dynamics simulations indicate that the ligands undergo considerable fluctuations about their equilibrium positions. Finally, apoferritin displays both structural and dynamic responses to anesthetic binding, which may mimic changes elicited by anesthetics in physiologic targets like ion channels.

L Vedula; G Brannigan; N Economou; J Xi; M Hall; R Liu; M Rossi; W Dailey; K Grasty; et. al.

2011-12-31T23:59:59.000Z

464

High Resolution Irradiance Spectrum from 300 to 1000 nm  

E-Print Network (OSTI)

The FTS scans that made up the Kitt Peak Solar Flux Atlas by Kurucz, Furenlid, Brault, and Testerman (1984) have been re-reduced. An approximate telluric atmospheric model was determined for each FTS scan. Large-scale features produced by O3 and O2 dimer were computed and divided out. The solar continuum level was found by fitting a smooth curve to high points in each scan. The scans were normalized to the fitted continuum to produce a residual flux spectrum for each FTS scan. The telluric line spectrum was computed using HITRAN and other line data for H2O, O2, and CO2. The line parameters were adjusted for an approximate match to the observed spectra. The scans were divided by the computed telluric spectra to produce residual irradiance spectra. Artifacts from wavelength mismatches, deep lines, etc, were removed by hand and replaced by linear interpolation. Overlapping scans were fitted together to make a continuous spectrum from 300 to 1000 nm. All the above steps were iterative. The monochromatic error varies from 0.1 to 1.0 percent. The residual spectrum was calibrated two different ways: First by normalizing it to the continuum of theoretical solar model ASUN (Kurucz 1992), and second, by degrading the spectrum to the resolution of the observed irradiance (Thuillier et al. 2004) to determine a normalization function that was then applied to the high resolution spectrum.

Robert L. Kurucz

2006-05-01T23:59:59.000Z

465

Alternative dispute resolution in electricity: Just do it!  

Science Conference Proceedings (OSTI)

Using mediation and arbitration, rather than traditional litigation, would produce enormous savings to the utility industry - in costs, time, and sparing use of key management resources. The time to institutionalize ADR is now! Prior to the recent formation of the first regional transmission groups (RTGs), the electric utility industry had made relatively sparing use of alternative dispute resolution (ADR). Historically, the industry`s time-honored reaction, when confronted with disputes of any significance, has been to sound the alarm and have its lawyers man their litigation battle stations. The results of these efforts have been mixed for both winners and losers - but the most common result has been high legal fees and multi-year litigation. In contrast to the electric utility industry`s marginal use of ADR, alternative dispute resolution is widely used to resolve disputes in such areas as: environmental cleanup, product liability, intellectual property and construction contract disputes, to name just a few. Internationally, disputes arising in North America Free Trade Agreement-related matters are subject to arbitration.

Coughlin, J.T.

1995-11-01T23:59:59.000Z

466

HEXOS—Humidity Exchange Over the Sea A Program for Research on Water-Vapor and Droplet Fluxes from Sea of Air at Moderate to High Wind Speeds  

Science Conference Proceedings (OSTI)

HEXOS is an international program for the study of evaporation and spray-droplet flux from sea to air. The program includes measurements in the field at moderate-to-high wind speeds, wind-tunnel studies, instrument development, boundary-layer ...

Kristina B. Katsaros; Stuart D. Smith; Wiebe A. Oost

1987-05-01T23:59:59.000Z

467

Estimation procedures and error analysis for inferring the total plutonium (Pu) produced by a graphite-moderated reactor  

Science Conference Proceedings (OSTI)

Graphite isotope ratio method (GIRM) is a technique that uses measurements and computer models to estimate total plutonium (Pu) production in a graphite-moderated reactor. First, isotopic ratios of trace elements in extracted graphite samples from the target reactor are measured. Then, computer models of the reactor relate those ratios to Pu production. Because Pu is controlled under nonproliferation agreements, an estimate of total Pu production is often required, and a declaration of total Pu might need to be verified through GIRM. In some cases, reactor information (such as core dimensions, coolant details, and operating history) are so well documented that computer models can predict total Pu production without the need for measurements. However, in most cases, reactor information is imperfectly known, so a measurement and model-based method such as GIRM is essential. Here, we focus on GIRM’s estimation procedure and its associated uncertainty. We illustrate a simulation strategy for a specific reactor that estimates GIRM’s uncertainty and determines which inputs contribute most to GIRM’s uncertainty, including inputs to the computer models. These models include a ‘‘local’’ code that relates isotopic ratios to the local Pu production, and a ‘‘global’’ code that predicts the Pu production shape over the entire reactor. This predicted shape is included with other 3D basis functions to provide a ‘‘hybrid basis set’’ that is used to fit the local Pu production estimates. The fitted shape can then be integrated over the entire reactor to estimate total Pu production. This GIRM evaluation provides a good example of several techniques of uncertainty analysis and introduces new reasons to fit a function using basis functions in the evaluation of the impact of uncertainty in the true 3D shape.

Heasler, Patrick G.; Burr, Tom; Reid, Bruce D.; Gesh, Christopher J.; Bayne, Charles K.

2006-10-01T23:59:59.000Z

468

Compact and mobile high resolution PET brain imager  

DOE Patents (OSTI)

A brain imager includes a compact ring-like static PET imager mounted in a helmet-like structure. When attached to a patient's head, the helmet-like brain imager maintains the relative head-to-imager geometry fixed through the whole imaging procedure. The brain imaging helmet contains radiation sensors and minimal front-end electronics. A flexible mechanical suspension/harness system supports the weight of the helmet thereby allowing for patient to have limited movements of the head during imaging scans. The compact ring-like PET imager enables very high resolution imaging of neurological brain functions, cancer, and effects of trauma using a rather simple mobile scanner with limited space needs for use and storage.

Majewski, Stanislaw (Yorktown, VA); Proffitt, James (Newport News, VA)

2011-02-08T23:59:59.000Z

469

Results from the High Resolution Fly's Eye Experiment  

SciTech Connect

The High Resolution Fly's Eye (HiRes) Experiment operated two fluorescence detector sites in the western Utah desert between 1997 and 2006. The HiRes results on the cosmic ray spectrum are consistent with the GZK Suppression predicted at 10{sup 19.8} eV and observe an ankle structure at 10{sup 18.5} eV. These spectral features are consistent with a proton-dominated composition for cosmic rays at the highest energies. The HiRes composition studies of both the mean and the variance of the shower maximum depth (X{sub max}) also give results that are completely consistent with a predominately protonic composition, and inconsistent with heavy nuclei such as iron. We also report on the result of anisotropy studies.

Jui, C. C. H. [Department of Physics, University of Utah, 115 S. 1400 E. Rm. 201 Salt Lake City, Utah, 84112-0830 (United States)

2011-09-22T23:59:59.000Z

470

Microsoft Word - Dispute Resolution Agreement August 2009.doc  

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

BILL RICHARDSON BILL RICHARDSON Governor DIANE DENISH Lieutenant Governor NEW MEXICO ENVIRONMENT DEPARTMENT Hazardous Waste Bureau 2905 Rodeo Park Drive East, Building 1 Santa Fe, New Mexico 87505-6303 Phone (505) 476-6000 Fax (505) 476-6030 www.nmenv.state.nm.us RON CURRY Secretary JON GOLDSTEIN Deputy Secretary CERTIFIED MAIL - RETURN RECEIPT REQUESTED August 4, 2009 David Moody, Manager Farok Sharif, President Carlsbad Field Office Washington TRU Solutions LLC Department of Energy P.O. Box 2078 P.O. Box 3090 Carlsbad, New Mexico 88221-5608 Carlsbad, New Mexico 88221-3090 RE: MAY 26, 2009 DISPUTE RESOLUTION - TERMS OF AGREEMENT WASTE ISOLATION PILOT PLANT EPA I.D. NUMBER NM4890139088 Dear Dr. Moody and Mr. Sharif: On May 18, 2009, the New Mexico Environment Department (NMED) issued comments on the

471

HIGH-RESOLUTION ATMOSPHERIC ENSEMBLE MODELING AT SRNL  

Science Conference Proceedings (OSTI)

The High-Resolution Mid-Atlantic Forecasting Ensemble (HME) is a federated effort to improve operational forecasts related to precipitation, convection and boundary layer evolution, and fire weather utilizing data and computing resources from a diverse group of cooperating institutions in order to create a mesoscale ensemble from independent members. Collaborating organizations involved in the project include universities, National Weather Service offices, and national laboratories, including the Savannah River National Laboratory (SRNL). The ensemble system is produced from an overlapping numerical weather prediction model domain and parameter subsets provided by each contributing member. The coordination, synthesis, and dissemination of the ensemble information are performed by the Renaissance Computing Institute (RENCI) at the University of North Carolina-Chapel Hill. This paper discusses background related to the HME effort, SRNL participation, and example results available from the RENCI website.

Buckley, R.; Werth, D.; Chiswell, S.; Etherton, B.

2011-05-10T23:59:59.000Z

472

A High Resolution Luminosity Monitor for SLAC Experiment E158  

DOE Green Energy (OSTI)

A calorimetric detector based on ionization has been employed as a low-angle luminosity monitor for the parity violation experiment E158 at SLAC. The experiment utilizes a 50 GeV polarized electron beam on a liquid hydrogen target. The detector looks at high energy Mott and Moller scattered electrons, with a per pulse flux of 4 x 10{sup 8} particles. This large signal allows the device to serve the dual role of monitoring target density fluctuations, as well as detecting false asymmetries. In the first physics run of the experiment, the detector has achieved a per-pulse intensity asymmetry resolution of 170 parts per million. The linearity of the device also has been verified to {<=} 1%.

Jones, Gary M

2003-09-18T23:59:59.000Z

473

Compact and mobile high resolution PET brain imager  

Science Conference Proceedings (OSTI)

A brain imager includes a compact ring-like static PET imager mounted in a helmet-like structure. When attached to a patient's head, the helmet-like brain imager maintains the relative head-to-imager geometry fixed through the whole imaging procedure. The brain imaging helmet contains radiation sensors and minimal front-end electronics. A flexible mechanical suspension/harness system supports the weight of the helmet thereby allowing for patient to have limited movements of the head during imaging scans. The compact ring-like PET imager enables very high resolution imaging of neurological brain functions, cancer, and effects of trauma using a rather simple mobile scanner with limited space needs for use and storage.

Majewski, Stanislaw (Yorktown, VA); Proffitt, James (Newport News, VA)

2011-02-08T23:59:59.000Z

474

High resolution, high rate x-ray spectrometer  

DOE Patents (OSTI)

It is an object of the invention to provide a pulse processing system for use with detected signals of a wide dynamic range which is capable of very high counting rates, with high throughput, with excellent energy resolution and a high signal-to-noise ratio. It is a further object to provide a pulse processing system wherein the fast channel resolving time is quite short and substantially independent of the energy of the detected signals. Another object is to provide a pulse processing system having a pile-up rejector circuit which will allow the maximum number of non-interfering pulses to be passed to the output. It is also an object of the invention to provide new methods for generating substantially symmetrically triangular pulses for use in both the main and fast channels of a pulse processing system.

Goulding, F.S.; Landis, D.A.

1983-07-14T23:59:59.000Z

475

A Global, Multi-Resolution Approach to Regional Ocean Modeling  

SciTech Connect

In this collaborative research project between Pennsylvania State University, Colorado State University and Florida State University, we mainly focused on developing multi-resolution algorithms which are suitable to regional ocean modeling. We developed hybrid implicit and explicit adaptive multirate time integration method to solve systems of time-dependent equations that present two signi#12;cantly di#11;erent scales. We studied the e#11;ects of spatial simplicial meshes on the stability and the conditioning of fully discrete approximations. We also studies adaptive #12;nite element method (AFEM) based upon the Centroidal Voronoi Tessellation (CVT) and superconvergent gradient recovery. Some of these techniques are now being used by geoscientists(such as those at LANL).

Du, Qiang

2013-11-08T23:59:59.000Z

476

High-Resolution Design of a Protein Loop  

DOE Green Energy (OSTI)

Despite having irregular structure, protein loops often adopt specific conformations that are critical to protein function. Most studies in de novo protein design have focused on creating proteins with regular elements of secondary structure connected by very short loops or turns. To design longer protein loops that adopt specific conformations, we have developed a protocol within the Rosetta molecular modeling program that iterates between optimizing the sequence and conformation of a loop in search of low-energy sequence-structure pairs. We have tested the procedure by designing 10-residue loops for the connection between the second and third strand in the {beta}-sandwich protein tenascin. Three low-energy designs from 7,200 flexible backbone trajectories were selected for experimental characterization. All three designs, called LoopA, LoopB, and LoopC, adopt stable folded structures. High-resolution crystal structures of LoopA and LoopB have been solved. LoopB adopts a structure very similar to the design model (0.46 Angstroms rmsd), and all but one of the side chains are modeled in the correct rotamers. LoopA crystallized at low pH in a structure that differs dramatically from our design model. It forms a strand-swapped dimer mediated by hydrogen bonds to protonated glutamic acids. Gel filtration indicates that the protein is not a dimer at neutral pH. These results suggest that the high-resolution design of protein loops is possible; however, they also highlight how small changes in protein energetics can dramatically perturb the low free energy structure of a protein.

Hu,X.; Wang, H.; Ke, H.; Kuhlman, B.

2007-01-01T23:59:59.000Z

477

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

478

A nuclear criticality safety assessment of the loss of moderation control in 2 1/2 and 10-ton cylinders containing enriched UF sub 6  

Science Conference Proceedings (OSTI)

Moderation control for maintaining nuclear criticality safety in 2-1/2-ton, 10-ton, and 14-ton cylinders containing enriched uranium hexafluoride (UF{sub 6}) has been used safely within the nuclear industry for over thirty years, and is dependent on cylinder integrity and containment. This assessment evaluates the loss of moderation control by the breaching of containment and entry of water into the cylinders. The first objective of this study was to estimate the required amounts of water entering these large UF{sub 6} cylinders to react with, and to moderate the uranium compounds sufficiently to cause criticality. Hypothetical accident situations were modeled as a uranyl fluoride (UO{sub 2}F{sub 2}) slab above a UF{sub 6} hemicylinder, and a UO{sub 2} sphere centered within a UF{sub 6} hemicylinder. These situations were investigated by computational analyses utilizing the KENO V.a Monte Carlo Computer Code. The results were used to estimate both the masses of water required for criticality, and the limiting masses of water that could be considered safe. The second objective of the assessment was to calculate the time available for emergency control actions before a criticality would occur, i.e., a safetime,'' for various sources of water and different size openings in a breached cylinder. In the situations considered, except the case for a fire hose, the safetime appears adequate for emergency control actions. The assessment shows that current practices for handling moderation controlled cylinders of low enriched UF{sub 6}, along with the continuation of established personnel training programs, ensure nuclear criticality safety for routine and emergency operations. 2 refs., 5 figs., 1 tab.

Newvahner, R.L. (Portsmouth Gaseous Diffusion Plant, OH (United States)); Pryor, W.A. (PAI Corp., Oak Ridge, TN (United States))

1991-08-16T23:59:59.000Z

479

High-Resolution Aeromagnetic Survey to Image Shallow Faults, Dixie Valley  

Open Energy Info (EERE)

Resolution Aeromagnetic Survey to Image Shallow Faults, Dixie Valley Resolution Aeromagnetic Survey to Image Shallow Faults, Dixie Valley Geothermal Field, Nevada Jump to: navigation, search OpenEI Reference LibraryAdd to library Report: High-Resolution Aeromagnetic Survey to Image Shallow Faults, Dixie Valley Geothermal Field, Nevada Abstract N/A Author V. J. S. Grauch Published U.S. Geological Survey, 2002 Report Number 02-384 DOI Not Provided Check for DOI availability: http://crossref.org Online Internet link for High-Resolution Aeromagnetic Survey to Image Shallow Faults, Dixie Valley Geothermal Field, Nevada Citation V. J. S. Grauch. 2002. High-Resolution Aeromagnetic Survey to Image Shallow Faults, Dixie Valley Geothermal Field, Nevada. (!) : U.S. Geological Survey. Report No.: 02-384. Retrieved from "http://en.openei.org/w/index.php?title=High-Resolution_Aeromagnetic_Survey_to_Image_Shallow_Faults,_Dixie_Valley_Geothermal_Field,_Nevada&oldid=682601"

480

Sensor orientation for high-resolution satellite imagery  

E-Print Network (OSTI)

As high-resolution satellite imagery (HRSI) attracts usage in a broader range of mapping and GIS applications, so the demand for higher 3D accuracy increases. One of the notable recent innovations in sensor orientation modelling for HRSI has been bias compensated RPC bundle adjustment, which has shown that geopositioning to high accuracy can be achieved with minimal ground control; indeed, only one control point may be required. Bias-compensated RPCs and related issues are further examined in this paper, with attention being paid to the impact of terrain height variation and the issue of scanning mode. Image scanning characteristics can significantly influence metric performance, with the effect being more pronounced for HRSI sensors that dynamically vary their orientation during scene capture. Through experimental testing with IKONOS and QuickBird stereo imagery, the authors demonstrate that bias-corrected RPCs are capable of yielding sub-pixel geopositioning from base-level imagery products. Thus, bias-compensated RPCs are not only favourable in regard to optimising accuracy capability; they also offer cost advantages. 1.

H. B. Hanley; C. S. Fraser

2002-01-01T23:59:59.000Z

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481

Resolution of the Hanford site ferrocyanide safety issue  

Science Conference Proceedings (OSTI)

The Ferrocyanide Safety Issue at the Hanford Site was officially resolved in December 1996. This paper summarizes the key activities that led to final resolution of this safety hazard, a process that began in 1990 after it and other safety concerns were identified for the underground high-level waste storage tanks at the Hanford Site. At the time little was known about ferrocyanide-nitrate/nitrite reactions and their potential to cause offsite releases of radioactivity. The ferrocyanide hazard was a perceived problem, but it took six years of intense studies and analyses of tank samples to prove that the problem no longer exists. The issue revolved around the fact that ferrocyanide and nitrate mixtures can be made to explode violently if concentrated, dry, and heated to temperatures of at least 250 {degrees}C. The studies conducted over the last six years have shown that the combined effects of temperature, radiation, and pH during 40 or more years of storage have destroyed almost all of the ferrocyanide originally added to tanks. This was shown in laboratory experiments using simulant wastes and confirmed by actual samples taken from the ferrocyanide tanks. The tank waste sludges are now too dilute to support a sustained exothermic reaction, even if dried out and heated to high temperatures. 2 tabs., 18 refs.

Cash, R.J.; Lilga, M.A.; Babad, H., Fluor Daniel Hanford

1997-02-27T23:59:59.000Z

482

Atomic resolution of Lithium Ions in LiCoO  

SciTech Connect

LiCoO2 is the most common lithium storage material for lithium rechargeable batteries, used widely to power portable electronic devices such as laptop computers. Lithium arrangements in the CoO2 framework have a profound effect on the structural stability and electrochemical properties of LixCoO2 (0 < x < 1), however, probing lithium ions has been difficult using traditional X-ray and neutron diffraction techniques. Here we have succeeded in simultaneously resolving columns of cobalt, oxygen, and lithium atoms in layered LiCoO2 battery material using experimental focal series of LiCoO2 images obtained at sub-Angstrom resolution in a mid-voltage transmission electron microscope. Lithium atoms are the smallest and lightest metal atoms, and scatter electrons only very weakly. We believe our observations of lithium to be the first by electron microscopy, and that they show promise to direct visualization of the ordering of lithium and vacancy in LixCoO2.

Shao-Horn, Yang; Croguennec, Laurence; Delmas, Claude; Nelson, Chris; O' Keefe, Michael A.

2003-03-18T23:59:59.000Z

483

Measurement of {sup 17}F+p reactions at RESOLUT  

SciTech Connect

The {sup 14}O({alpha},p){sup 17}F reaction is important for understanding the {alpha}p process that occurs in X-ray bursts, but the rate of this reaction remains uncertain due to the uncertain properties of states in {sup 18}Ne. We measured the {sup 17}F(p,p){sup 17}F and {sup 17}F(p,{alpha}){sup 14}O reactions to study the properties of states in {sup 18}Ne that are important for the {sup 14}O({alpha},p){sup 17}F reaction using {sup 17}F radioactive beams from the RESOLUT facility at Florida State University. Double-sided silicon strip detectors were used to detect light particles, and recoiling heavy ions were detected in coincidence using a gas ionization chamber at forward angles. The performance of the system was first tested using the {sup 17}O(p,{alpha}){sup 14}N reaction. This was the first measurement using the ASIC electronics and recoil detector being developed for the Array for Nuclear Astrophysics Studies with Exotic Nuclei (ANASEN). We report on the performance and preliminary results.

Linhardt, L. E.; Baby, L.; Bardayan, D. W.; Blackmon, J. C.; Gardiner, H.; Johnson, E.; Koschiy, E.; Macon, K. T.; Rasco, B. C.; Rogachev, G.; Santiago-Gonzalez, D.; Wiedenhoever, I. [Department of Physics and Astronomy, Louisiana State University, 202 Nicholson Hall, Tower Dr., Baton Rouge, LA 70803 (United States); Department of Physics, Florida State University, 315 Keen Building, Tallahasse, FL 32306 (United States); Physics Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831 (United States); Department of Physics and Astronomy, Louisiana State University, 202 Nicholson Hall, Tower Dr., Baton Rouge, LA 70803 (United States); Department of Physics, Florida State University, 315 Keen Building, Tallahasse, FL 32306 (United States); Department of Physics and Astronomy, Louisiana State University, 202 Nicholson Hall, Tower Dr., Baton Rouge, LA 70803 (United States); Department of Physics, Florida State University, 315 Keen Building, Tallahasse, FL 32306 (United States)

2012-11-20T23:59:59.000Z

484

High Resolution FIR and IR Spectroscopy of Methanol Isotopologues  

Science Conference Proceedings (OSTI)

New astronomical facilities such as HIFI on the Herschel Space Observatory, the SOFIA airborne IR telescope and the ALMA sub-mm telescope array will yield spectra from interstellar and protostellar sources with vastly increased sensitivity and frequency coverage. This creates the need for major enhancements to laboratory databases for the more prominent interstellar 'weed' species in order to model and account for their lines in observed spectra in the search for new and more exotic interstellar molecular 'flowers'. With its large-amplitude internal torsional motion, methanol has particularly rich spectra throughout the FIR and IR regions and, being very widely distributed throughout the galaxy, is perhaps the most notorious interstellar weed. Thus, we have recorded new spectra for a variety of methanol isotopic species on the high-resolution FTIR spectrometer on the CLS FIR beamline. The aim is to extend quantum number coverage of the data, improve our understanding of the energy level structure, and provide the astronomical community with better databases and models of the spectral patterns with greater predictive power for a range of astrophysical conditions.

Lees, R. M.; Xu, Li-Hong [Centre for Laser, Atomic and Molecular Studies (CLAMS), University of New Brunswick, 100 Tucker Park Road, Saint John, NB E2L 4L5 (Canada); Appadoo, D. R. T.; Billinghurst, B. [Canadian Light Source, Univ. of Saskatchewan, 101 Perimeter Rd, Saskatoon, SK S7N 0X4 (Canada)

2010-02-03T23:59:59.000Z

485

The High Time Resolution Spectral Evolution of Gamma-Ray Bursts  

E-Print Network (OSTI)

Previous studies of the evolution of gamma-ray burst spectra have generally relied on fitting sequences of spectra. These studies usually were confined to bright bursts and often lacked sufficient temporal resolution. We have developed techniques which sacrifice spectral resolution for temporal resolution. First, the crosscorrelations between intensity lightcurves in different energy bands allow for the classification of the spectral evolution of a large burst sample. Second, the energy correlation of pairs of counts places limits on short-duration, narrowband emission.

David Band; Lyle Ford

1997-11-27T23:59:59.000Z

486

2007 R&D 100 Award: Ultra-High-Resolution Mammography System...  

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

7 R&D 100 Awards: Ultra-High-Resolution Mammography System (UHRMS) Director's Welcome Organization Achievements Awards Patents Professional Societies Highlights Fact Sheets,...

487

Minimal free resolutions and Betti diagrams of the algebras of $SL_2$-invariants  

E-Print Network (OSTI)

For the algebras of $SL_2$-invariants of small homological dimension theirs minimal free graded resolutions and graded Betti diagrams calculated.

Bedratyuk, Leonid

2011-01-01T23:59:59.000Z

488

Action Plan and Status of Resolutions for LWRS Steering Committee Recommendations Dated August 13, 2009  

Science Conference Proceedings (OSTI)

The resolutions to the recommendations from the Report of the Steering Committee for the LWRS Program Dated August 13, 2009 are documented.

Hongbin Zhang

2009-08-01T23:59:59.000Z