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We encourage you to perform a real-time search of NLEBeta
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1

SAFARI 2000 MODIS Airborne Simulator Data  

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

2

How can we use MODIS land surface temperature to validate long-term urban model simulations?  

E-Print Network [OSTI]

of Moderate Resolution Imaging Spectroradiometer (MODIS) data and simulations from the High-Resolution Land Data Assimilation System (HRLDAS) over Greater Houston, Texas, U.S. For the satellite cloud mask (SCM) method, prior to comparison, the cloud mask...

Hu, Leiqiu; Brunsell, Nathaniel A.; Monaghan, Andrew J.; Barlage, Michael; Wilhelmi, Olga V.

2014-03-27T23:59:59.000Z

3

Impact of airborne Doppler wind lidar profiles on numerical simulations of a tropical cyclone  

E-Print Network [OSTI]

Click Here for Full Article Impact of airborne Doppler wind lidar profiles on numerical simulations Regional Campaign (TPARC) field experiment in 2008, an airborne Doppler wind lidar (DWL) was onboard the U measurements on the numerical simulation of Typhoon Nuri (2008) in its formation phase. With an advanced

Pu, Zhaoxia

4

Simulator Evaluation of Airborne Information for Lateral Spacing (AILS) Concept  

Science Journals Connector (OSTI)

The Airborne Information for Lateral Spacing (AILS) concept is designed to support independent parallel approach operations to runways spaced as close as 2500 ft. This report describes the AILS operational concept and the results of a ground-based flight ...

Abbott Terence S.; Elliott Dawn M.

2001-03-01T23:59:59.000Z

5

MODIS Consistent Vegetation Parameter Specifications and Their Impacts on Regional Climate Simulations  

Science Journals Connector (OSTI)

A consistent set of Moderate Resolution Imaging Spectroradiometer (MODIS) vegetation parameters, including leaf and stem area index (LAI and SAI, respectively), land-cover category (LCC), fractional vegetation cover (FVC), and albedo ...

Min Xu; Xin-Zhong Liang; Arthur Samel; Wei Gao

2014-11-01T23:59:59.000Z

6

Transitions of cloud-topped marine boundary layers characterized by AIRS, MODIS, and a large eddy simulation model  

SciTech Connect (OSTI)

Cloud top entrainment instability (CTEI) is a hypothesized positive feedback between entrainment mixing and evaporative cooling near the cloud top. Previous theoretical and numerical modeling studies have shown that the persistence or breakup of marine boundary layer (MBL) clouds may be sensitive to the CTEI parameter. Collocated thermodynamic profile and cloud observations obtained from the Atmospheric Infrared Sounder (AIRS) and Moderate Resolution Imaging Spectroradiometer (MODIS) instruments are used to quantify the relationship between the CTEI parameter and the cloud-topped MBL transition from stratocumulus to trade cumulus in the northeastern Pacific Ocean. Results derived from AIRS and MODIS are compared with numerical results from the UCLA large eddy simulation (LES) model for both well-mixed and decoupled MBLs. The satellite and model results both demonstrate a clear correlation between the CTEI parameter and MBL cloud fraction. Despite fundamental differences between LES steady state results and the instantaneous snapshot type of observations from satellites, significant correlations for both the instantaneous pixel-scale observations and the long-term averaged spatial patterns between the CTEI parameter and MBL cloud fraction are found from the satellite observations and are consistent with LES results. This suggests the potential of using AIRS and MODIS to quantify global and temporal characteristics of the cloud-topped MBL transition.

Yue, Qing; Kahn, Brian; Xiao, Heng; Schreier, Mathias; Fetzer, E. J.; Teixeira, J.; Suselj, Kay

2013-08-16T23:59:59.000Z

7

Airborne wear particles railway research group FEM Simulation of train disc brake behavior  

E-Print Network [OSTI]

1 Airborne wear particles railway research group FEM Simulation of train disc brake behavior a modern train disc brake with brake caliper and high speed pads. During braking, a considerable amount. A model of train brake caliper Aim The overall aim of the MSc degree project is to develop a thermoelastic

Haviland, David

8

MODIS Land Product Subsets  

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

9

MODIS Land Products Subsets  

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

10

MODIS Land Products Subsets  

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

11

MODIS Land Products Subsets  

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

12

MODIS ASCII Subsets Available  

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

13

MODIS Land Products Subsets  

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

14

MODIS Land Products Subsets  

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

15

MODIS Land Products Subsets  

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

16

Evaluating the impact of urban morphology configurations on the accuracy of urban canopy model temperature simulations with MODIS  

E-Print Network [OSTI]

of the urban-built environment within models. Using a 10 year (2003–2012) series of offline 1 km simulations over Greater Houston with the High-Resolution Land Data Assimilation System (HRLDAS), this study explores the model accuracy gained by progressively...

Monaghan, Andrew J.; Hu, Leiqiu; Brunsell, Nathaniel A.; Barlage, Michael; Wilhelmi, Olga V.

2014-06-09T23:59:59.000Z

17

MODIS Land Products Subsets  

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

18

MODIS Land Products Subsets  

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

19

MODIS Land Products Subsets  

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

20

MODIS Land Products Subsets  

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

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

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

Science Journals Connector (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

22

Modeling for Airborne Contamination  

SciTech Connect (OSTI)

The objective of Modeling for Airborne Contamination (referred to from now on as ''this report'') is to provide a documented methodology, along with supporting information, for estimating the release, transport, and assessment of dose to workers from airborne radioactive contaminants within the Monitored Geologic Repository (MGR) subsurface during the pre-closure period. Specifically, this report provides engineers and scientists with methodologies for estimating how concentrations of contaminants might be distributed in the air and on the drift surfaces if released from waste packages inside the repository. This report also provides dose conversion factors for inhalation, air submersion, and ground exposure pathways used to derive doses to potentially exposed subsurface workers. The scope of this report is limited to radiological contaminants (particulate, volatile and gaseous) resulting from waste package leaks (if any) and surface contamination and their transport processes. Neutron activation of air, dust in the air and the rock walls of the drift during the preclosure time is not considered within the scope of this report. Any neutrons causing such activation are not themselves considered to be ''contaminants'' released from the waste package. This report: (1) Documents mathematical models and model parameters for evaluating airborne contaminant transport within the MGR subsurface; and (2) Provides tables of dose conversion factors for inhalation, air submersion, and ground exposure pathways for important radionuclides. The dose conversion factors for air submersion and ground exposure pathways are further limited to drift diameters of 7.62 m and 5.5 m, corresponding to the main and emplacement drifts, respectively. If the final repository design significantly deviates from these drift dimensions, the results in this report may require revision. The dose conversion factors are further derived by using concrete of sufficient thickness to simulate the drift walls. The gamma-ray scattering properties of concrete are sufficiently similar to those of the host rock and proposed insert material; use of concrete will have no significant impact on the conclusions. The information in this report is presented primarily for use in performing pre-closure radiological safety evaluations of radiological contaminants, but it may also be used to develop strategies for contaminant leak detection and monitoring in the MGR. Included in this report are the methods for determining the source terms and release fractions, and mathematical models and model parameters for contaminant transport and distribution within the repository. Various particle behavior mechanisms that affect the transport of contaminant are included. These particle behavior mechanisms include diffusion, settling, resuspension, agglomeration and other deposition mechanisms.

F.R. Faillace; Y. Yuan

2000-08-31T23:59:59.000Z

23

The plume model MODIS: integration in the Hydro-Quebec shell  

Science Journals Connector (OSTI)

The comprehensive numerical model MODIS for the simulation of pollutant dispersion from a point source is integrated in the graphical shell of Hydro-Quebec. The shell has been developed by Hydro-Quebec to offer a valuable scheme for various applications of software products, which were originally conceived only for scientific purposes. MODIS, developed by the GKSS Research Centre Geesthacht and the Ontario Ministry of Environment, is a powerful simulation model, which calculates the behaviour of plumes in the lower atmosphere. The model was validated under a bilateral project in the framework of Canadian-German co-operation by using data of the EPRI Plume Model Validation Project. A further application of MODIS has been undertaken to determine the dispersion of gaseous mercury from a previous strong emission source located in the former German Democratic Republic.

O. Krueger; D.P. Eppel; S. Levesque; G. Lefebvre

1995-01-01T23:59:59.000Z

24

Classifying Airborne Particles  

Science Journals Connector (OSTI)

Considering the selective Rayleigh light scattering behaviour by small particles, this study adopts a new technique to classify nano-scale airborne particles with colour histogram features. Noise was generated using scattered light by five different ... Keywords: Particle classification, Rayleigh scattering, noise histogram, histogram maximum value index

Kapila K. Pahalawatta; Richard Green

2011-12-01T23:59:59.000Z

25

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

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

26

Optical Airborne Particle Counter Operation  

Science Journals Connector (OSTI)

For most cleanroom airborne particle measurements, an optical single particle ... or surrogates of the product or of the cleanroom environment. The last procedure is used to...

Alvin Lieberman

1992-01-01T23:59:59.000Z

27

Airborne electromagnetic surveys as a reconnaissance technique...  

Open Energy Info (EERE)

Airborne electromagnetic surveys as a reconnaissance technique for geothermal exploration Abstract INPUT airborne electromagnetic (AEM) surveys were conducted during 1979 in five...

28

Airborne Wind Turbine  

SciTech Connect (OSTI)

Broad Funding Opportunity Announcement Project: Makani Power is developing an Airborne Wind Turbine (AWT) that eliminates 90% of the mass of a conventional wind turbine and accesses a stronger, more consistent wind at altitudes of near 1,000 feet. At these altitudes, 85% of the country can offer viable wind resources compared to only 15% accessible with current technology. Additionally, the Makani Power wing can be economically deployed in deep offshore waters, opening up a resource which is 4 times greater than the entire U.S. electrical generation capacity. Makani Power has demonstrated the core technology, including autonomous launch, land, and power generation with an 8 meter wingspan, 20 kW prototype. At commercial scale, Makani Power aims to develop a 600 kW, 28 meter wingspan product capable of delivering energy at an unsubsidized cost competitive with coal, the current benchmark for low-cost power.

None

2010-09-01T23:59:59.000Z

29

Cloud Detection with MODIS, Part I: Improvements in the MODIS Cloud Mask for Collection 5 *Richard A. Frey, Steven A. Ackerman, Yinghui Liu, Kathleen I. Strabala, Hong Zhang,  

E-Print Network [OSTI]

Cloud Detection with MODIS, Part I: Improvements in the MODIS Cloud Mask for Collection 5 *Richard.frey@ssec.wisc.edu August 2007 #12;ABSTRACT Significant improvements have been made to the MODIS cloud mask (MOD35 and MYD35 to the 3.9-12 m and 11-12 m cloud tests. More non-MODIS ancillary input data has been added. Land and sea

Sheridan, Jennifer

30

Relating violence to MODIS fire detections in Darfur, Sudan  

Science Journals Connector (OSTI)

The Moderate Resolution Imaging Spectroradiometer (MODIS) Thermal Anomalies and Fire Detection data product can provide an input into early warning and rapid response efforts of interest to human rights, humanitarian and security communities. A review ...

Lars Bromley

2010-03-01T23:59:59.000Z

31

Relating violence to MODIS fire detections in Darfur, Sudan  

Science Journals Connector (OSTI)

The Moderate Resolution Imaging Spectroradiometer MODIS Thermal Anomalies and Fire Detection data product can provide an input into early warning and rapid response efforts of interest to human rights, humanitarian and security communities. A review ...

Lars Bromley

2010-05-01T23:59:59.000Z

32

AIRBORNE, OPTICAL REMOTE SENSNG OF METHANE AND ETHANE FOR NATURAL GAS PIPELINE LEAK DETECTION  

SciTech Connect (OSTI)

Ophir Corporation was awarded a contract by the U. S. Department of Energy, National Energy Technology Laboratory under the Project Title ''Airborne, Optical Remote Sensing of Methane and Ethane for Natural Gas Pipeline Leak Detection'' on October 14, 2002. The scope of the work involved designing and developing an airborne, optical remote sensor capable of sensing methane and, if possible, ethane for the detection of natural gas pipeline leaks. Flight testing using a custom dual wavelength, high power fiber amplifier was initiated in February 2005. Ophir successfully demonstrated the airborne system, showing that it was capable of discerning small amounts of methane from a simulated pipeline leak. Leak rates as low as 150 standard cubic feet per hour (scf/h) were detected by the airborne sensor.

Jerry Myers

2005-04-15T23:59:59.000Z

33

Improvements to a MODIS global terrestrial evapotranspiration algorithm Qiaozhen Mu , Maosheng Zhao, Steven W. Running  

E-Print Network [OSTI]

towers. The global annual total ET over the vegetated land surface is 62.8Ã?103 km3 , agrees very wellImprovements to a MODIS global terrestrial evapotranspiration algorithm Qiaozhen Mu , Maosheng Zhao Vegetation cover fraction MODIS MODIS global evapotranspiration (ET) products by Mu et al. [Mu, Q., Heinsch

Montana, University of

34

Time-series validation of MODIS land biophysical products in a Kalahari woodland, Africa  

E-Print Network [OSTI]

Time-series validation of MODIS land biophysical products in a Kalahari woodland, Africa K. F MODIS variables are produced from the same algorithm. Solar zenith angle effects, differences between counts versus energy) were examined and rejected as explanations for the discrepancies between MODIS

Myneni, Ranga B.

35

Trace Reduction for Virtual Memory Simulations Scott F. Kaplan, Yannis Smaragdakis, and Paul R. Wilson  

E-Print Network [OSTI]

Trace Reduction for Virtual Memory Simulations Scott F. Kaplan, Yannis Smaragdakis, and Paul R reduction. Neither requires that the simulator be modi ed to accept the reduced trace. This research

Smaragdakis, Yannis

36

Geophex airborne unmanned survey system  

SciTech Connect (OSTI)

The purpose of this effort is to design, construct, and evaluate a portable, remotely-piloted, airborne, geophysical survey system. This nonintrusive system will provide {open_quotes}stand-off{close_quotes} capability to conduct surveys and detect buried objects, structures, and conditions of interest at hazardous locations. This system permits two operators to rapidly conduct geophysical characterization of hazardous environmental sites. During a survey, the operators remain remote from, but within visual distance, of, the site. The sensor system never contacts the Earth, but can be positioned near the ground so that weak anomalies can be detected.

Won, I.J.; Taylor, D.W.A.

1995-03-01T23:59:59.000Z

37

MSIV leakage airborne iodine transport  

SciTech Connect (OSTI)

Gaseous iodine deposits on surfaces exposed to vapors. Basic chemical and physical principles predict this behavior, and several laboratory and in-plant measurements demonstrate the characteristic. An empirical model was developed that describes the deposition, resuspension, and transformation of airborne radioiodine molecular species as a stream containing these forms moves along its pathway. The model uses a data base of measured values of deposition and resuspension rates in its application and describes the conversion of the more reactive inorganic iodine species I[sub 2] to the less reactive organic species CH[sub 3]I as the iodine deposits and resuspends along the path. It also considers radioactive decay and chemical surface bonding during residence on surfaces. For the 8-day [sup 131]I, decay during the airborne portion of the transport is negligible. Verification of the model included measurement tests of long gaseous-activity sampling lines of different diameters, operated at different flow rates and stream temperatures. The model was applied to the streams at a boiling water reactor nuclear power plant to describe the transport through leaking main steam isolation valves (MSIVs), following a loss-of-coolant accident.

Cline, J.E. (Cline Associates Inc., Rockville, MD (United States))

1993-01-01T23:59:59.000Z

38

Geophex Airborne Unmanned Survey System  

SciTech Connect (OSTI)

Ground-based surveys place personnel at risk due to the proximity of buried unexploded ordnance (UXO) items or by exposure to radioactive materials and hazardous chemicals. The purpose of this effort is to design, construct, and evaluate a portable, remotely-piloted, airborne, geophysical survey system. This non-intrusive system will provide stand-off capability to conduct surveys and detect buried objects, structures, and conditions of interest at hazardous locations. During a survey, the operators remain remote from, but within visual distance of, the site. The sensor system never contacts the Earth, but can be positioned near the ground so that weak geophysical anomalies can be detected. The Geophex Airborne Unmanned Survey System (GAUSS) is designed to detect and locate small-scale anomalies at hazardous sites using magnetic and electromagnetic survey techniques. The system consists of a remotely-piloted, radio-controlled, model helicopter (RCH) with flight computer, light-weight geophysical sensors, an electronic positioning system, a data telemetry system, and a computer base-station. The report describes GAUSS and its test results.

Won, I.L.; Keiswetter, D.

1995-12-31T23:59:59.000Z

39

Quantifying global marine isoprene fluxes using MODIS chlorophyll observations  

E-Print Network [OSTI]

, with considerable spatial and temporal variability, resulting in a global annual total of 0.1 Tg C/yr. Air vegetation [Guenther et al., 1995], with the tropics responsible for most of the global annual total ($500 TgQuantifying global marine isoprene fluxes using MODIS chlorophyll observations Paul I. Palmer

Palmer, Paul

40

Comparing Four Sub-pixel Algorithms in MODIS Snow Mapping  

E-Print Network [OSTI]

Comparing Four Sub-pixel Algorithms in MODIS Snow Mapping Hongen Zhang College of Environmental monitoring of snow cover extent is an important research goal in the science of Earth systems. Now mixture Machine (SVM). Overall, the LMM and SVM method provided better estimates of the snow cover components than

California at Santa Barbara, University of

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

International MODIS and AIRS processing package: AIRS products and applications  

E-Print Network [OSTI]

International MODIS and AIRS processing package: AIRS products and applications Elisabeth Weisz presented and discussed in this paper demonstrate that the IMAPP AIRS retrieval product is rigorously parameters from the operational AIRS L2 product and data from other instruments. Keywords: AIRS, IMAPP

Li, Jun

42

Principles for Sampling Airborne Radioactivity from Stacks  

SciTech Connect (OSTI)

This book chapter describes the special processes involved in sampling the airborne effluents from nuclear faciities. The title of the book is Radioactive Air Sampling Methods. The abstract for this chapter was cleared as PNNL-SA-45941.

Glissmeyer, John A.

2010-10-18T23:59:59.000Z

43

Survey of airborne mold flora in Panama  

Science Journals Connector (OSTI)

A survey of the airborne fungi was carried out for one year. Petri plates containing Sabouraud's medium were exposed, eight times monthly, at each of six collection sites. A total of 3306 colonies were recovered.

Robert L. Taylor; Archibald W. Mc Fadden

44

An Airborne APT Weather Satellite Imaging System  

Science Journals Connector (OSTI)

This paper describes the development of a novel airborne system that receives a real-time imagery broadcast in the Automatic Picture Transmission (APT) format from polar-orbiting weather satellites. The availability of such real-time imagery ...

James E. Jordan; David L. Marcotte; G. W. K. Moore

1998-02-01T23:59:59.000Z

45

Surface Albedo/BRDF Parameters (Terra/Aqua MODIS)  

DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

Spatially and temporally complete surface spectral albedo/BRDF products over the ARM SGP area were generated using data from two Moderate Resolution Imaging Spectroradiometer (MODIS) sensors on Terra and Aqua satellites. A landcover-based fitting (LBF) algorithm is developed to derive the BRDF model parameters and albedo product (Luo et al., 2004a). The approach employs a landcover map and multi-day clearsky composites of directional surface reflectance. The landcover map is derived from the Landsat TM 30-meter data set (Trishchenko et al., 2004a), and the surface reflectances are from MODIS 500m-resolution 8-day composite products (MOD09/MYD09). The MOD09/MYD09 data are re-arranged into 10-day intervals for compatibility with other satellite products, such as those from the NOVA/AVHRR and SPOT/VGT sensors. The LBF method increases the success rate of the BRDF fitting process and enables more accurate monitoring of surface temporal changes during periods of rapid spring vegetation green-up and autumn leaf-fall, as well as changes due to agricultural practices and snowcover variations (Luo et al., 2004b, Trishchenko et al., 2004b). Albedo/BRDF products for MODIS on Terra and MODIS on Aqua, as well as for Terra/Aqua combined dataset, are generated at 500m spatial resolution and every 10-day since March 2000 (Terra) and July 2002 (Aqua and combined), respectively. The purpose for the latter product is to obtain a more comprehensive dataset that takes advantages of multi-sensor observations (Trishchenko et al., 2002). To fill data gaps due to cloud presence, various interpolation procedures are applied based on a multi-year observation database and referring to results from other locations with similar landcover property. Special seasonal smoothing procedure is also applied to further remove outliers and artifacts in data series.

Trishchenko, Alexander

46

Systematic mapping of Leaf Area Index across Canada using 250-meter MODIS data  

Science Journals Connector (OSTI)

An approach to generate a 250-meter Canada wide Leaf Area Index (LAI) map using 250-meter MODIS data is described. The full processing chain is introduced. The approach is based on intercalibration of Landsat and MODIS vegetation indices (VI's) combined with LAI–VI's empirical relationships. Preliminary validation over two sites where field work was carried out shows promising results. Intercalibration of MODIS VI's before deriving LAI maps provides up to 65% improvement of the LAI overall accuracy.

Nadia Rochdi; Richard Fernandes

2010-01-01T23:59:59.000Z

47

Active airborne contamination control using electrophoresis  

SciTech Connect (OSTI)

In spite of our best efforts, radioactive airborne contamination continues to be a formidable problem at many of the Department of Energy (DOE) weapons complex sites. For workers that must enter areas with high levels of airborne contamination, personnel protective equipment (PPE) can become highly restrictive, greatly diminishing productivity. Rather than require even more restrictive PPE for personnel in some situations, the Rocky Flats Plant (RFP) is actively researching and developing methods to aggressively combat airborne contamination hazards using electrophoretic technology. With appropriate equipment, airborne particulates can be effectively removed and collected for disposal in one simple process. The equipment needed to implement electrophoresis is relatively inexpensive, highly reliable, and very compact. Once airborne contamination levels are reduced, less PPE is required and a significant cost savings may be realized through decreased waste and maximized productivity. Preliminary ``cold,`` or non-radioactive, testing results at the RFP have shown the technology to be effective on a reasonable scale, with several potential benefits and an abundance of applications.

Veatch, B.D.

1994-06-01T23:59:59.000Z

48

New Sampling Methods for Airborne Microorganisms  

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

New Sampling Methods for Airborne Microorganisms New Sampling Methods for Airborne Microorganisms Speaker(s): Klaus Willeke Date: February 27, 2001 - 12:00pm Location: Bldg 90 Seminar Host/Point of Contact: David Faulkner Klaus Willeke and his international team of engineers, physicists, microbiologists, industrial hygienists and environmental scientists have worked for about 15 years on the development of new methods for sampling airborne microorganisms. The following topics will be highlighted: long-term bioaerosol sampling into liquid by swirling air motion ("Biosampler"); personal aerosol sampling with low wind sensitivity and highfilter deposit uniformity ("Button Aerosol Sampler"); collection of microorganisms by electrostatic means; source testing as a predictor for microorganism release from surfaces; particle concentrating from large air

49

Airborne Gravity Survey | Open Energy Information  

Open Energy Info (EERE)

Airborne Gravity Survey Airborne Gravity Survey Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Technique: Airborne Gravity Survey Details Activities (0) Areas (0) Regions (0) NEPA(0) Exploration Technique Information Exploration Group: Geophysical Techniques Exploration Sub Group: Gravity Techniques Parent Exploration Technique: Gravity Techniques Information Provided by Technique Lithology: Distribution of density in the subsurface enables inference of rock type. Stratigraphic/Structural: Delineation of steeply dipping formations, geological discontinuities and faults, intrusions and the deposition of silicates due to hydrothermal activity. Hydrological: Density of sedimentary rocks are strongly influenced by fluid contained within pore space. Dry bulk density refers to the rock with no moisture, while the wet bulk density accounts for water saturation; fluid content may alter density by up to 30%.(Sharma, 1997)

50

Airborne Electromagnetic Survey | Open Energy Information  

Open Energy Info (EERE)

Airborne Electromagnetic Survey Airborne Electromagnetic Survey Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Technique: Airborne Electromagnetic Survey Details Activities (2) Areas (2) Regions (0) NEPA(1) Exploration Technique Information Exploration Group: Geophysical Techniques Exploration Sub Group: Electrical Techniques Parent Exploration Technique: Electromagnetic Techniques Information Provided by Technique Lithology: provide data on rock type and mineral content Stratigraphic/Structural: Hydrological: can be used to detect changes in density of fluids and indicate if there is salt water intrusion Thermal: Cost Information Low-End Estimate (USD): 48.274,827 centUSD 0.0483 kUSD 4.827e-5 MUSD 4.827e-8 TUSD / mile Median Estimate (USD): 317.3831,738 centUSD 0.317 kUSD

51

Micro-Electron Spin Resonance for Airborne Soot Measurement  

Broader source: Energy.gov [DOE]

A real-time method for airborne soot concentration measurement using a miniaturized electron spin resonance sensor is presented.

52

Effect of foliage spatial heterogeneity in the MODIS LAI and FPAR algorithm over broadleaf forests  

E-Print Network [OSTI]

Effect of foliage spatial heterogeneity in the MODIS LAI and FPAR algorithm over broadleaf forests spectroradiometer (MODIS) leaf area index (LAI) and fraction of photosynthetically active radiation (FPAR) algorithm Forest, MA, were used for this purpose. The analysis covers three themes. First, the assumption

Myneni, Ranga B.

53

An empirical approach to derive MODIS ocean color patterns under severe sun glint  

E-Print Network [OSTI]

An empirical approach to derive MODIS ocean color patterns under severe sun glint Chuanmin Hu1 is limited, MODIS ocean color data can be used instead. However, frequent and extensive sun glint prevents such an application when glint reflectance, Lg, is >0.01 sr-1 . Here, an empirical approach is developed to remove sun

Meyers, Steven D.

54

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

SciTech Connect (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

55

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

SciTech Connect (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

56

Assessing inhalation exposure from airborne soil contaminants  

SciTech Connect (OSTI)

A method of estimation of inhalation exposure to airborne soil contaminants is presented. this method is derived from studies of airborne soil particles with radioactive tags. The concentration of contaminants in air (g/m{sup 3}) can be derived from the product of M, the suspended respirable dust mass concentration (g/m{sup 3}), S, the concentration of contaminant in the soil (g/g), and E{sub f}, an enhancement factor. Typical measurement methods and values of M, and E{sub f} are given along with highlights of experiences with this method.

Shinn, J.H.

1998-04-01T23:59:59.000Z

57

Sandia Multispectral Airborne Lidar for UAV Deployment  

SciTech Connect (OSTI)

Sandia National Laboratories has initiated the development of an airborne system for W laser remote sensing measurements. System applications include the detection of effluents associated with the proliferation of weapons of mass destruction and the detection of biological weapon aerosols. This paper discusses the status of the conceptual design development and plans for both the airborne payload (pointing and tracking, laser transmitter, and telescope receiver) and the Altus unmanned aerospace vehicle platform. Hardware design constraints necessary to maintain system weight, power, and volume limitations of the flight platform are identified.

Daniels, J.W.; Hargis,Jr. P.J.; Henson, T.D.; Jordan, J.D.; Lang, A.R.; Schmitt, R.L.

1998-10-23T23:59:59.000Z

58

E-Print Network 3.0 - airborne sunphotometer airborne Sample...  

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

CALNEX AND CARES Chris... (LaRC) airborne high spectral resolution lidar (HSRL) on the NASA B-200 aircraft measured aerosol... distribution of aerosols and to provide the vertical...

59

Methods for Sampling of Airborne Viruses  

Science Journals Connector (OSTI)

...has no effect on the recovery of T3 (131). Prehumidification...has no effect on the recovery of mengovirus 37A...but increases the recovery of bacteriophage S13...increased at high RH by the condensation of the water vapor on the airborne...

Daniel Verreault; Sylvain Moineau; Caroline Duchaine

2008-09-01T23:59:59.000Z

60

E-Print Network 3.0 - aqua modis reflectance Sample Search Results  

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

board both Terra and Aqua, MISR on Terra, POLDER on ADEOS, OMI on Aura, GLAS carried on Ice... SpectroRadiometer) on board Terra launched in 1999, and MODIS aboard Aqua launched...

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

ccpi-airborne_r2 | netl.doe.gov  

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

2 Industrial Carbon Capture and Storage Clean Coal Power Initiative Power Plant Improvement Initiative Clean Coal Technology Demonstration Program FutureGen AIRBORNE PROCESS(tm)...

62

Simulated performance of an airborne lidar wind shear detection system  

E-Print Network [OSTI]

) . . . . 78 53. COq aerosol backseat ter variations II (radial wind velocity) . . 54. COs pulse euergy variations outside atmospheric boundary layer (SXK . ) 79 79 55. 57. COs pulse energy variat, ion outside atmospheric bound ar y layer ( velocity... microburst/pulse energy variation (SNRN) . . 86 67. COz and Ho: YAG wet microburst/pulse energy variation (velocity error) 68. COz and Ho:YAG wet microburst/pulse energy variation (radial wind velocity) 69. COs uniform rain rate variat, ions 87 87 70...

Griffith, Kenneth Scott

2012-06-07T23:59:59.000Z

63

E-Print Network 3.0 - airborne biomass sensing Sample Search...  

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

biomass sensing Search Powered by Explorit Topic List Advanced Search Sample search results for: airborne biomass sensing Page: << < 1 2 3 4 5 > >> 1 We analysed airborne laser...

64

E-Print Network 3.0 - airborne mixtures part Sample Search Results  

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

GLAS Airborne lidar Biomass Height The use of lidar remote sensing for mapping the spatial distribution... and spatially coincident discrete-return airborne lidar data over...

65

E-Print Network 3.0 - airborne acidity estimates Sample Search...  

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

Intercomparisons of airborne measurements of aerosol ionic chemical composition during TRACE-P and ACE-Asia Summary: .: AIRBORNE AEROSOL INTERCOMPARISON 9 of 13 D15S06...

66

E-Print Network 3.0 - airborne sun photometer Sample Search Results  

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

sun photometer Search Powered by Explorit Topic List Advanced Search Sample search results for: airborne sun photometer Page: << < 1 2 3 4 5 > >> 1 BNL -63020 AN AIRBORNE...

67

Methane emissions from Alaska in 2012 from CARVE airborne observations  

Science Journals Connector (OSTI)

...models reported releases in the range of 120...regional-scale airborne measurements...greenhouse gas mole fractions every ?2.5...measured mole fraction, pressure, temperature...from biomass fires and any ocean...High-accuracy continuous airborne measurements...measurements of dry mole fractions of carbon dioxide...

Rachel Y.-W. Chang; Charles E. Miller; Steven J. Dinardo; Anna Karion; Colm Sweeney; Bruce C. Daube; John M. Henderson; Marikate E. Mountain; Janusz Eluszkiewicz; John B. Miller; Lori M. P. Bruhwiler; Steven C. Wofsy

2014-01-01T23:59:59.000Z

68

Airborne Studies of the Smoke from the Kuwait Oil Fires  

Science Journals Connector (OSTI)

...smoke from the Kuwait fires produced a small-scale...Concluding Remarks The airborne studies of the smoke from the Kuwait fires provided a large...1. Uncontrolled releases of oil began in January...and the oil field fires began in late February...Zimmerman). 3. An airborne study of the smoke...

Peter V. Hobbs; Lawrence F. Radke

1992-05-15T23:59:59.000Z

69

Adaptive Restoration of Airborne Daedalus AADS1268 ATM Thermal Data  

SciTech Connect (OSTI)

To incorporate the georegistration and restoration processes into airborne data processing in support of U.S. Department of Energy's nuclear emergency response task, we developed an adaptive restoration filter for airborne Daedalus AADS1268 ATM thermal data based on the Wiener filtering theory. Preliminary assessment shows that this filter enhances the detectability of small weak thermal anomalies in AADS1268 thermal images.

D. Yuan; E. Doak; P. Guss; A. Will

2002-01-01T23:59:59.000Z

70

Robust Multi-loop Airborne SLAM in Unknown Wind Environments  

E-Print Network [OSTI]

Robust Multi-loop Airborne SLAM in Unknown Wind Environments Jonghyuk Kim Department of Engineering for Autonomous Systems University of Sydney, Australia Email: salah@acfr.usyd.edu.au Abstract-- This paper presents a robust multi-loop airborne SLAM structure which also augments wind information. The air velocity

Kim, Jonghyuk "Jon"

71

Model for the transport of airborne radioiodine  

SciTech Connect (OSTI)

Gaseous iodine deposits on surfaces exposed to the vapors. The industry has observed gaseous iodine transport behavior for years, and groups have proposed models describing the phenomena with limited success. The transport models attempt to describe the complicated chemical processes in terms of empirical rate constants. The current model, also empirical, treats deposition, conversion, and resuspension along a path of short segments where the assumption of instantaneous and homogeneous mixing is adequate, passing on the results as input to the next segment. The number of segments depends on line and flow parameters and can be as many as 100,000 for a long, large-diameter pipe with low flow. It includes a chemical bonding reaction rate to iodine deposited on the surface. The model has five compartments in each segment: concentrations of the three airborne iodine species, surface activity available for resuspension, and reacted surface iodine that is fixed on the surface. All iodine in the segment undergoes radioactive decay. The calculation divides the time period into small time division, typically 100, where the assumption of instantaneous equilibrium is applicable. The model initially developed by Science Applications International describes deposition, resuspension, and conversion of iodine in four differential equations that describe, respectively, airborne elemental, HOI and organic, and surface activities.

Cline, J.E.

1991-11-01T23:59:59.000Z

72

Production of potentially hazardous respirable silica airborne particulate from the burning of sugarcane  

Science Journals Connector (OSTI)

In some areas of the world where agricultural burning is practised, the airborne particles produced have been linked to respiratory disease in humans. Here, we investigate the abundance and form of silica (SiO2) minerals found within ash and aerosol produced by the experimental burning of sugarcane. Samples of sugarcane leaf were incinerated over a range of temperatures, time scales and airflow conditions, the latter to investigate the effects of wind and updrafts during natural fires. The silica content of the residual ash (from still air simulations) was measured using an improved wet chemical methodology, described here. This indicated that the release of silica from the plant material into the atmosphere increases with increasing temperature of combustion. Airborne particulate, sampled using air-pump-filter apparatus, was characterised using scanning electron microscopy (SEM) with automated image and elemental analysis. For airborne particulate formed at 1100 °C (with airflow), 17% of the particles are in the respirable size fraction (release of cristobalite to the atmosphere (as sampled on filters). This pilot study shows that potentially toxic particles could be released during sugarcane burning and reinforces the need for further study into the emissions and re-suspension of ash from the burning of biomass.

Jennifer S. Le Blond; Ben J. Williamson; Claire J. Horwell; Alex K. Monro; Caroline A. Kirk; Clive Oppenheimer

2008-01-01T23:59:59.000Z

73

Red tide detection and tracing using MODIS fluorescence data: A regional example in SW Florida coastal waters  

E-Print Network [OSTI]

Red tide detection and tracing using MODIS fluorescence data: A regional example in SW Florida-time data from the MODIS satellite sensor was used to detect and trace a harmful algal bloom (HAB), or red to interferences of other water constituents. The red tide that formed from November to December 2004 off SW

74

Analysis and Flight Test Validation of High Performance AirborneWind Turbines  

Science Journals Connector (OSTI)

Makani Power has developed an autonomous airborne wind turbine prototype incorporating a rigid wing with onboard...

Damon Vander Lind

2013-01-01T23:59:59.000Z

75

Quantitative room-temperature mineralization of airborne formaldehyde using  

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

Quantitative room-temperature mineralization of airborne formaldehyde using Quantitative room-temperature mineralization of airborne formaldehyde using manganese oxide catalysts Title Quantitative room-temperature mineralization of airborne formaldehyde using manganese oxide catalysts Publication Type Journal Article Year of Publication 2011 Authors Sidheswaran, Meera A., Hugo Destaillats, Douglas P. Sullivan, Joern Larsen, and William J. Fisk Journal Applied Catalysis B - Environmental Issue 107 Pagination 34-41 Date Published 2011 Keywords commercial building ventilation & indoor environmental quality group, commercial building ventilation and indoor environmental quality group, energy analysis and environmental impacts department, indoor environment department, indoor environment group DOI 10.1016/j.apcatb.2011.06.032 Attachment Size

76

Airborne chemical baseline evaluation of the 222-S laboratory complex  

SciTech Connect (OSTI)

The 222-S Laboratory complex stores and uses over 400 chemicals. Many of these chemicals are used in laboratory analysis and some are used for maintenance activities. The majority of laboratory analysis chemicals are only used inside of fume hoods or glove boxes to control both chemical and radionuclide airborne concentrations. This evaluation was designed to determine the potential for laboratory analysis chemicals at the 222-S Laboratory complex to cause elevated airborne chemical concentrations under normal conditions. This was done to identify conditions and activities that should be subject to airborne chemical monitoring in accordance with the Westinghouse Hanford Company Chemical Hygiene Plan.

Bartley, P., Fluor Daniel Hanford

1997-02-12T23:59:59.000Z

77

Airborne Process Commercial Scale Demonstration Program  

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

CCPI 2) CCPI 2) contacts Brad tomer Director Office of Major Demonstrations National Energy Technology Laboratory 3610 Collins Ferry Road P.O. Box 880 Morgantown, WV 26507-0880 304-285-4692 brad.tomer@netl.doe.gov PaRtIcIPant Mustang Clean Energy, LLC, a subsidiary of Peabody Energy St. Louis, MO. Airborne Process(tm) commerciAl scAle DemonstrAtion ProgrAm (withDrAwn Prior to AwArD) Project Description Mustang Clean Energy will design, construct, and operate a full scale sodium-based multi-pollutant scrubber in conjunction with a revenue-generating fertilizer by-product processing plant at Mustang Energy Company, LLC's Mustang Generating Station. Both Mustang Clean Energy and Mustang Energy Company are subsidiaries of Peabody Energy, the world's largest coal company. The 300 MW (net) station will

78

The Western Airborne Contaminant Assessment Project (WACAP): An Interdisciplinary Evaluation of the Impacts of Airborne Contaminants in Western U.S. National Parks  

Science Journals Connector (OSTI)

The Western Airborne Contaminant Assessment Project (WACAP): An Interdisciplinary Evaluation of the Impacts of Airborne Contaminants in Western U.S. National Parks ... U.S. Geological Survey, Denver, Colorado ...

Dixon H. Landers; Staci Massey Simonich; Daniel Jaffe; Linda Geiser; Donald H. Campbell; Adam Schwindt; Carl Schreck; Michael Kent; Will Hafner; Howard E. Taylor; Kimberly Hageman; Sascha Usenko; Luke Ackerman; Jill Schrlau; Neil Rose; Tamara Blett; Marilyn Morrison Erway

2010-01-05T23:59:59.000Z

79

The Source of Airborne Lead: Recycling Pb-Contaminated Soils  

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

The Source of Airborne Lead: Recycling The Source of Airborne Lead: Recycling Pb-Contaminated Soils Starting in the 1970s, federal regulatory control and eventual elimination of lead-based "anti-knock" additives in gasoline decreased the level of airborne Pb in the USA by two orders-of-magnitude [1]. Blood lead levels of the USA figure 1 Figure 1. The good, the bad, and the ugly. Ambient airborne particulate matter captured on filters of woven silica fiber (large strips) and TeflonTM (round). Clean fiber filter at bottom for comparison. Take a deep breath? population decreased correspondingly [2,3]. Despite this dramatic improvement in both exposure risk and body burden of Pb, the sources and health threat of the low levels of lead in our "unleaded" air remain topics

80

Airborne asbestos fiber evaluation: a comparison of three methods  

E-Print Network [OSTI]

Najor Subject: Industrial Hygiene AIRBORNE ASBESTOS FIBER EVALUATION-A COMPARISON OF THRFE METHODS A Thesis by EMIL STUDI NKA Approved as to style and content by: ichard B. onzen air ar, of Committee) llaymon L. Johnston (Member) hlilliam P.... Fife (Member) N. . Ellis (Department Head) December 1979 ABSTRACT Airborne Asbestos Fiber Evaluat1on - A Compar1son Of Three Methods. ( December 1979) Emil Studinka, Jr. , S. S. , Clemson University M. S. , Texas A&M University Cha1rman of Ad...

Studinka, Emil

2012-06-07T23:59:59.000Z

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

Forest structure and aboveground biomass in the southwestern United States from MODIS and MISR  

E-Print Network [OSTI]

Forest structure and aboveground biomass in the southwestern United States from MODIS and MISR Mark Keywords: Earth Observing System Forest Structure Biomass Carbon Disturbance Multi-angle BRDF Modeling Land (dimensionless), mean canopy height (m), and aboveground woody biomass (Mg ha- 1 ) on a 250 m grid. Model

Kurapov, Alexander

82

Effect of Scaling Transfer between Evapotranspiration Maps Derived from LandSat 7 and MODIS Images  

E-Print Network [OSTI]

Sung-ho Hong, Jan M.H. Hendrickx and Brian Borchers New Mexico Tech, 801 Leroy place, Socorro, NM 87801 of the spatial distribution of ET over a range of space and time scales is needed for sustainable management coarse resolution images like MODIS provide very useful opportunities to monitor the energy balance

Borchers, Brian

83

A comparison between raw EPS output, (modied) BMA and extended LR using ECMWF EPS precipitation reforecasts  

E-Print Network [OSTI]

A comparison between raw EPS output, (modied) BMA and extended LR using ECMWF EPS precipitation (EPS). 2. Data sets, statistical methods and predictand denitions The data sets used in this study [1 and precipitation data from a reforecasting exper- iment with the ECMWF EPS system. Figure 1: BMA-tted pdf of 24-h

Schmeits, Maurice

84

ASSESSING THE UTILITY OF MODIS FOR MONITORING SNOW AND SEA ICE EXTENT  

E-Print Network [OSTI]

has begun. For the first time daily, global maps of snow cover and sea ice extent are being produced, global maps of snow cover and sea ice extent are being produced in a fully automated fashion from spaceASSESSING THE UTILITY OF MODIS FOR MONITORING SNOW AND SEA ICE EXTENT G. Scharfen, S. Khalsa U

Oldenburg, Carl von Ossietzky Universität

85

HEAT ISLAND OF SAN ANTONIO, TEXAS DETECTED BY MODIS/AQUA TEMPERATURE PRODUCT  

E-Print Network [OSTI]

by Chudnovsky et al. (2004) suggests that the best remote sensing for urban heat environment study shouldHEAT ISLAND OF SAN ANTONIO, TEXAS DETECTED BY MODIS/AQUA TEMPERATURE PRODUCT Hongjie Xie, Huade Guan, and Sandra Ytuarte Laboratory for Remote Sensing and Geoinformatics Department of Earth

Texas at San Antonio, University of

86

Gas Dynamic Effects On Laser Cut Quality Kai Chen, Y. Lawrence Yao, and Vijay Modi  

E-Print Network [OSTI]

Gas Dynamic Effects On Laser Cut Quality Kai Chen, Y. Lawrence Yao, and Vijay Modi Department are very sensitive to gas jet pressure and nozzle standoff distance. Do a high gas pressure and a small shows the same behavior (i.e., discontinuity as gas pressure and standoff change

Yao, Y. Lawrence

87

Automated volcanic eruption detection using MODIS Robert Wright *, Luke Flynn, Harold Garbeil, Andrew Harris, Eric Pilger  

E-Print Network [OSTI]

Automated volcanic eruption detection using MODIS Robert Wright *, Luke Flynn, Harold Garbeil, Harris, & Wright, 2001). Initial research was concerned with the use of high-spatial-, low.g. Flynn Mouginis-Mark, & Horton, 1994; Wright, Flynn, & Harris, 2001), lava domes (e.g. Oppenheimer

Wright, Robert

88

Assessment of the broadleaf crops leaf area index product from the Terra MODIS instrument  

E-Print Network [OSTI]

the cultivated area (52%). The major con- centrations of this biome class are in Asia (39%), North America (22Assessment of the broadleaf crops leaf area index product from the Terra MODIS instrument Bin Tan a) and fraction vegetation absorbed photosynthetically active radiation (FPAR) products for broadleaf crops

Myneni, Ranga B.

89

An Artificial Neural Network Model to Reduce False Alarms in Satellite Precipitation Products Using MODIS and CloudSat Observations  

Science Journals Connector (OSTI)

The Moderate Resolution Imaging Spectroradiometer (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

2013-12-01T23:59:59.000Z

90

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

E-Print Network [OSTI]

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

Shi, Tao

91

Assessment of Time-Series MODIS Data for Cropland Mapping in the U.S. Central Great Plains  

E-Print Network [OSTI]

The goal of this study was to further investigate the potential of MODIS NDVI 250-m data for crop spectral characterization, discrimination, and mapping in the Great Plains of the USA using various exploratory approaches. ...

Masialeti, Iwake

2008-07-23T23:59:59.000Z

92

Detecting long-term trend in precipitable water over the Tibetan Plateau by synthesis of station and MODIS observations  

Science Journals Connector (OSTI)

Long-term trend in precipitable water (PW) is an important component of climate change assessments for the Tibetan Plateau (TP). PW products from Moderate Resolution Imaging Spectroradiometer (MODIS) are able to provide good spatial coverage of PW ...

Ning Lu; Kevin E. Trenberth; Jun Qin; Kun Yang; Ling Yao

93

BioSAR Airborne Biomass Sensing System  

SciTech Connect (OSTI)

This CRADA was developed to enable ORNL to assist American Electronics, Inc. test a new technology--BioSAR. BioSAR is a an airborne, low frequency (80-120 MHz {approx} FM radio frequencies) synthetic aperture radar (SAR) technology which was designed and built for NASA by ZAI-Amelex under Patrick Johnson's direction. At these frequencies, leaves and small branches are nearly transparent and the majority of the energy reflected from the forest and returned to the radar is from the tree trunks. By measuring the magnitude of the back scatter, the volume of the tree trunk and therefore the biomass of the trunks can be inferred. The instrument was successfully tested on tropical rain forests in Panama. Patrick Johnson, with American Electronics, Inc received a Phase II SBIR grant from DOE Office of Climate Change to further test and refine the instrument. Mr Johnson sought ORNL expertise in measuring forest biomass in order for him to further validate his instrument. ORNL provided ground truth measurements of forest biomass at three locations--the Oak Ridge Reservation, Weyerhaeuser Co. commercial pine plantations in North Carolina, and American Energy and Power (AEP) Co. hardwood forests in southern Ohio, and facilitated flights over these forests. After Mr. Johnson processed the signal data from BioSAR instrument, the processed data were given to ORNL and we attempted to derive empirical relationships between the radar signals and the ground truth forest biomass measurements using standard statistical techniques. We were unsuccessful in deriving such relationships. Shortly before the CRADA ended, Mr Johnson discovered that FM signal from local radio station broadcasts had interfered with the back scatter measurements such that the bulk of the signal received by the BioSAR instrument was not backscatter from the radar but rather was local radio station signals.

Graham, R.L.; Johnson, P.

2007-05-24T23:59:59.000Z

94

E-Print Network 3.0 - airborne aura laser Sample Search Results  

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

laser Search Powered by Explorit Topic List Advanced Search Sample search results for: airborne aura laser Page: << < 1 2 3 4 5 > >> 1 We analysed airborne laser altimetry acquired...

95

E-Print Network 3.0 - airborne experimental test-bed Sample Search...  

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

experimental test-bed Search Powered by Explorit Topic List Advanced Search Sample search results for: airborne experimental test-bed Page: << < 1 2 3 4 5 > >> 1 National Airborne...

96

ARM - Evaluation Product - Airborne Visible/Infrared Imaging Spectrometer  

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

ProductsAirborne Visible/Infrared Imaging ProductsAirborne Visible/Infrared Imaging Spectrometer (AVIRIS) Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Evaluation Product : Airborne Visible/Infrared Imaging Spectrometer (AVIRIS) 1997.08.01 - 1997.08.01 Site(s) SGP General Description AVIRIS is an optical sensor that delivers calibrated images of the upwelling spectral radiance in 224 contiguous spectral channels (bands) with wavelengths from 400 to 2500 nanometers. AVIRIS has been flown on two aircraft platforms: a NASA ER-2 jet and the Twin Otter turboprop. The main objective of the AVIRIS project is to identify, measure, and monitor constituents of the Earth's surface and atmosphere based on molecular absorption and particle scattering signatures. Research with

97

Airborne Electromagnetic Survey At Raft River Geothermal Area (1979) | Open  

Open Energy Info (EERE)

Electromagnetic Survey At Raft River Electromagnetic Survey At Raft River Geothermal Area (1979) Exploration Activity Details Location Raft River Geothermal Area Exploration Technique Airborne Electromagnetic Survey Activity Date 1979 Usefulness not indicated DOE-funding Unknown Exploration Basis To show that AEM methods can be useful in exploration for and defining geothermal systems Notes Extensive audio-magnetotelluric (AMT) work by the USGS in KGRA's showed that many geothermal systems do have a near-surface electrical signature which should be detectable by an AEM system. References Christopherson, K.R.; Long, C.L.; Hoover, D.B. (1 September 1980) Airborne electromagnetic surveys as a reconnaissance technique for geothermal exploration Retrieved from "http://en.openei.org/w/index.php?title=Airborne_Electromagnetic_Survey_At_Raft_River_Geothermal_Area_(1979)&oldid=510231

98

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

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

99

Detecting gas flares and estimating flaring volumes at individual flow stations using MODIS data  

Science Journals Connector (OSTI)

Abstract Gas flaring has gained global recognition as a prominent agent of pollution, leading to the establishment of the Global Gas Flaring Reduction (GGFR) initiative, which requires an objective means of monitoring flaring activity. Because auditable information on flaring activity is difficult to obtain there have recently been attempts to detect flares using satellite imagery, typically at global scales. However, to adequately assess the environmental and health impacts of flaring from local to regional scales, it is important that we have a means of acquiring information on the location of individual active flaring sites and the volume of gas combusted at these sites. In this study we developed an approach to the retrieval of such information using nighttime MODIS thermal imagery. The MODIS flare detection technique (MODET) and the MODIS flare volume estimation technique (MOVET) both exploit the absolute and contextual radiometric response of flare sites. The levels of detection accuracy and estimation error were quantified using independent observations of flare location and volume. The MODET and MOVET were applied to an archive of MODIS data spanning 2000–2014 covering the Niger Delta, Nigeria, a significant global hotspot of flaring activity. The results demonstrate the substantial spatial and temporal variability in gas flaring across the region, between states and between onshore and offshore sites. Thus, whilst the estimated total volume of gas flared in the region over the study period is large (350 Billion Cubic Metres), the heterogeneity in the flaring indicates that the impacts of such flares will be highly variable in space and time. In this context, the MODET and MOVET offer a consistent and objective means of monitoring flaring activity over an appropriate range of scales and it is now important that their robustness and transferability is tested in other oil-producing regions of the world.

Obinna C.D. Anejionu; G. Alan Blackburn; J. Duncan Whyatt

2015-01-01T23:59:59.000Z

100

Deriving long term snow cover extent dataset from AVHRR and MODIS data: Central Asia case study  

Science Journals Connector (OSTI)

Abstract We computed the daily AVHRR snow cover from all available AVHRR level1b raw data over central Asia (CA) with an aggregated rating based snow identification scheme. The daily AVHRR snow cover was further processed into an 8-day maximum-snow-extent data, and then went through a set of spatial and temporal filters to fill cloud or gap pixels. A correction method based on known long term snow probability in small sub-regions has been developed for computing corrected 8-day AVHRR snow cover, which is comparable to 8-day MODIS snow data. Validation of the daily AVHRR snow product against ground snow survey suggested a high accuracy of the snow identification scheme. Comparison of the daily AVHRR snow cover with the daily MODIS snow cover in Amu Dar'ya River basin within CA showed high accuracy of daily AVHRR snow, with a general accuracy of 99.60% and Kappa Coefficient of 0.92 in the basin. Comparison of the corrected 8-day AVHRR snow cover with 8-day MODIS cloud/gap free snow cover in the same basin also showed high comparability between both data, with a general accuracy of 95.61% and Kappa Coefficient of 0.84. Seasonal snow cover analysis in Amu Dar'ya River basin revealed the spatial and temporal patterns of snow distribution and negative trends in snow cover duration in 1986 to 2008 due to earlier snow melting dates. The newly developed long-term snow dataset from AVHRR and MODIS data over CA, with its high accuracy and internal comparability, is suitable for seasonal snow cover studies in mountainous regions over CA.

Hang Zhou; Elena Aizen; Vladimir Aizen

2013-01-01T23:59:59.000Z

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

Flight Testing of an Advanced Airborne Natural Gas Leak Detection System  

SciTech Connect (OSTI)

ITT Industries Space Systems Division (Space Systems) has developed an airborne natural gas leak detection system designed to detect, image, quantify, and precisely locate leaks from natural gas transmission pipelines. This system is called the Airborne Natural Gas Emission Lidar (ANGEL) system. The ANGEL system uses a highly sensitive differential absorption Lidar technology to remotely detect pipeline leaks. The ANGEL System is operated from a fixed wing aircraft and includes automatic scanning, pointing system, and pilot guidance systems. During a pipeline inspection, the ANGEL system aircraft flies at an elevation of 1000 feet above the ground at speeds of between 100 and 150 mph. Under this contract with DOE/NETL, Space Systems was funded to integrate the ANGEL sensor into a test aircraft and conduct a series of flight tests over a variety of test targets including simulated natural gas pipeline leaks. Following early tests in upstate New York in the summer of 2004, the ANGEL system was deployed to Casper, Wyoming to participate in a set of DOE-sponsored field tests at the Rocky Mountain Oilfield Testing Center (RMOTC). At RMOTC the Space Systems team completed integration of the system and flew an operational system for the first time. The ANGEL system flew 2 missions/day for the duration for the 5-day test. Over the course of the week the ANGEL System detected leaks ranging from 100 to 5,000 scfh.

Dawn Lenz; Raymond T. Lines; Darryl Murdock; Jeffrey Owen; Steven Stearns; Michael Stoogenke

2005-10-01T23:59:59.000Z

102

A real-time airborne scatterometer data processor  

E-Print Network [OSTI]

Subject: Electrical Fngineering A REAL-TIME AIRBORNE SCATTEROMETER DATA PROCESSOR A Thesis by Gary James Reisor Approved as to style and content by: arrman o Committee Hea o Depa tment em er Mem er August 1976 ABSTRACT A Real-time Airborne... data stream in an industry standard format so that external devices for testing and data storage can be easily interfaced to the RASP system. Bi-phase Level Output (Big-L output) - Provides a high speed, synchronous, bit serial data output port...

Reisor, Gary James

2012-06-07T23:59:59.000Z

103

Methods to determine the size distribution of airborne rhinovirus  

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

Methods to determine the size distribution of airborne rhinovirus Methods to determine the size distribution of airborne rhinovirus Title Methods to determine the size distribution of airborne rhinovirus Publication Type Report Year of Publication 2004 Authors Russell, Marion L., Regine Goth-Goldstein, Michael G. Apte, and William J. Fisk Publisher Lawrence Berkeley National Laboratory Abstract About 50% of viral-induced respiratory illnesses are caused by the human rhinovirus (HRV). Prior research has demonstrated that rhinovirus infections can be transmitted via person-to-person contact and via inhalation of infectious aerosols. Measurements of the concentrations and sizes of bioaerosols are critical for research on building characteristics, aerosol transport, and mitigation measures. To detect airborne HRV, we developed a quantitative reverse transcription-coupled polymerase chain reaction (RT-PCR) assay and verified that this assay detects HRV in nasal lavage samples. A quantitation standard was used to determine the assay detection limit of 5 fg of HRV RNA with a linear range over 10,000-fold. This assay was used to quantify the size distribution of an artificially-produced HRV aerosol captured with an Andersen six-stage cascade impactor. In future studies, we hope to use the methods developed here to characterize the size distribution of naturally occurring viral-aerosols

104

Method for measuring the size distribution of airborne rhinovirus  

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

Method for measuring the size distribution of airborne rhinovirus Method for measuring the size distribution of airborne rhinovirus Title Method for measuring the size distribution of airborne rhinovirus Publication Type Conference Proceedings Year of Publication 2002 Authors Russell, Marion L., Regine Goth-Goldstein, Michael G. Apte, and William J. Fisk Conference Name Proceedings of the Indoor Air 2002 Conference, Monterey, CA Volume 1 Pagination 40-45 Publisher Indoor Air 2002, Santa Cruz, CA Abstract About 50% of viral-induced respiratory illnesses are caused by the human rhinovirus (HRV). Measurements of the concentrations and sizes of bioaerosols are critical for research on building characteristics, aerosol transport, and mitigation measures. We developed a quantitative reverse transcription-coupled polymerase chain reaction (RT-PCR) assay for HRV and verified that this assay detects HRV in nasal lavage samples. A quantitation standard was used to determine a detection limit of 5 fg of HRV RNA with a linear range over 1000-fold. To measure the size distribution of HRV aerosols, volunteers with a head cold spent two hours in a ventilated research chamber. Airborne particles from the chamber were collected using an Andersen Six-Stage Cascade Impactor. Each stage of the impactor was analyzed by quantitative RT-PCR for HRV. For the first two volunteers with confirmed HRV infection, but with mild symptoms, we were unable to detect HRV on any stage of the impactor

105

The study of cirrus clouds using airborne and satellite data  

E-Print Network [OSTI]

Cirrus clouds are known to play a key role in the earth's radiation budget, yet are one of the most uncertain components of the earth-atmosphere system. With the development of instruments such as the Airborne Visible/Infrared Imaging Spectrometer...

Meyer, Kerry Glynne

2004-09-30T23:59:59.000Z

106

Using Airborne Sensing to Map Pools in Rivers  

E-Print Network [OSTI]

Department of Water, Land and Biodiversity Conservation, South Australia #12;#12;Mapping methods · SpaceborneUsing Airborne Sensing to Map Pools in Rivers Michael Stewardson, Jeffrey Walker, Michelle Kan, Luke Kitchen, Stephen Wealands, Payam Ghadirian eWater Cooperative Research Centre, The University

Walker, Jeff

107

Methods for Sampling of Airborne Viruses  

Science Journals Connector (OSTI)

...1971. Effect of simulated solar radiation and sodium fluorescein...Anantharaman, and W. Tang. 2006. Development of a method for bacteria and...Johnson-Lussenburg. 1987. Development of methods to study the survival...Testing of the applicability of battery-powered portable microbial...

Daniel Verreault; Sylvain Moineau; Caroline Duchaine

2008-09-01T23:59:59.000Z

108

Cloud Model Evaluation Using Radiometric Measurements from the Airborne Multiangle Imaging Spectroradiometer (AirMISR)  

SciTech Connect (OSTI)

Detailed information on cloud properties is needed to vigorously test retrieval algorithms for satellite and ground-based remote sensors. The inherent complexity of clouds makes this information difficult to obtain from observations alone and cloud resolving models are often used to generating synthetic datasets that can be used as proxies for real data. We test the ability of a cloud resolving model to reproduce cloud structure in a case study of low-level clouds observed by the Earth Observing System (EOS) validation program in north central Oklahoma on March 3, 2000. A three-dimensional radiative transfer model is applied to synthetic cloud properties generated by a high-resolution three-dimensional cloud model in order to simulate the top of atmosphere radiances. These synthetic radiances are then compared with observations from the airborne Multiangle Imaging SpectroRadiometer (AirMISR), flown on the NASA ER-2 high-altitude aircraft.

Ovtchinnikov, Mikhail; Marchand, Roger T.

2007-03-01T23:59:59.000Z

109

Retrieval of Cloud Microphysical Properties from MODIS and AIRS JUN LI,* HUNG-LUNG HUANG,* CHIAN-YI LIU,* PING YANG, TIMOTHY J. SCHMIT,# HELI WEI,  

E-Print Network [OSTI]

Retrieval of Cloud Microphysical Properties from MODIS and AIRS JUN LI,* HUNG-LUNG HUANG,* CHIAN monitoring of the distribution of clouds during day and night. The MODIS is able to provide a high-spatial-resolution (1­5 km) cloud mask, cloud classification mask, cloud-phase mask, cloud-top pressure (CTP

Li, Jun

110

Airborne electromagnetic surveys as a reconnaissance technique for  

Open Energy Info (EERE)

electromagnetic surveys as a reconnaissance technique for electromagnetic surveys as a reconnaissance technique for geothermal exploration Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Conference Proceedings: Airborne electromagnetic surveys as a reconnaissance technique for geothermal exploration Details Activities (1) Areas (1) Regions (0) Abstract: INPUT airborne electromagnetic (AEM) surveys were conducted during 1979 in five Known Geothermal Resource Areas (KGRA's). AEM work has not been significantly utilized in the past for geothermal purposes because it was thought that a shallow exploration technique would not be effective. Extensive audio-magnetotelluric (AMT) work by the USGS in KGRA's showed that many geothermal systems do have a near-surface electrical signature which should be detectable by an AEM system. INPUT responses in the form of

111

Quantifying forested stands with the pulsed airborne laser profiler  

E-Print Network [OSTI]

) red H. Smeins (Member) Peter T Sprinz (Member) J ~ (Head aries Lee f Departmen ) May 1986 ABSTRACT Quantifying Forested Stands with the Pulsed Airborne Laser Profiler. (May 1986) Michael Craig Whatley, B. S. , Texas A&M University... Digital Data CONCLUSIONS. 48 51 PALP Capabilities and Opportunities in Basal Area Estimation. 53 REFERENCES' APPENDIX A APPENDIX B. VITA. 54 57 78 90 viii LIST OF TASLES Table Page Prediction equations of predicted ground tree height from...

Whatley, Michael Craig

2012-06-07T23:59:59.000Z

112

E-Print Network 3.0 - airborne laser swath Sample Search Results  

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

Powered by Explorit Topic List Advanced Search Sample search results for: airborne laser swath Page: << < 1 2 3 4 5 > >> 1 Natural Environment Research Council May 26, 2010...

113

E-Print Network 3.0 - airborne laser system Sample Search Results  

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

Powered by Explorit Topic List Advanced Search Sample search results for: airborne laser system Page: << < 1 2 3 4 5 > >> 1 Z .ISPRS Journal of Photogrammetry & Remote Sensing...

114

E-Print Network 3.0 - airborne laser scanner Sample Search Results  

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

Powered by Explorit Topic List Advanced Search Sample search results for: airborne laser scanner Page: << < 1 2 3 4 5 > >> 1 International Conference on Machine Control &...

115

NASA multipurpose airborne DIAL system and measurements of ozone and aerosol profiles  

Science Journals Connector (OSTI)

An airborne differential absorption lidar (DIAL) system has been developed for the remote measurement of gas and aerosol profiles in the troposphere and lower stratosphere. The...

Browell, E V; Carter, A F; Shipley, S T; Allen, R J; Butler, C F; Mayo, M N; Siviter, J H; Hall, W M

1983-01-01T23:59:59.000Z

116

E-Print Network 3.0 - airborne gamma-ray surveying Sample Search...  

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

Powered by Explorit Topic List Advanced Search Sample search results for: airborne gamma-ray surveying Page: << < 1 2 3 4 5 > >> 1 Geophysical Research Abstracts Vol. 12,...

117

E-Print Network 3.0 - airborne gamma-ray spectrometry Sample...  

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

Powered by Explorit Topic List Advanced Search Sample search results for: airborne gamma-ray spectrometry Page: << < 1 2 3 4 5 > >> 1 Geophysical Research Abstracts Vol. 12,...

118

E-Print Network 3.0 - airborne gamma spectrometry Sample Search...  

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

blimps (or other airborne agents) carrying instruments and sensors... Mystery of Gamma-Ray Bursts An international team of astronomers has found good support for the idea... that...

119

E-Print Network 3.0 - airborne gamma-ray measurements Sample...  

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

Powered by Explorit Topic List Advanced Search Sample search results for: airborne gamma-ray measurements Page: << < 1 2 3 4 5 > >> 1 Geophysical Research Abstracts Vol. 12,...

120

E-Print Network 3.0 - airborne gamma survey Sample Search Results  

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

blimps (or other airborne agents) carrying instruments and sensors... Mystery of Gamma-Ray Bursts An international team of astronomers has found good support for the idea... that...

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

E-Print Network 3.0 - airborne intelligence surveillance Sample...  

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

surveillance problems. Figure 15.1: Data flow diagram of our modeling approach. Airborne modeling steps... , Berkeley, 1 Based on "Constructing 3D City Models by Merging...

122

E-Print Network 3.0 - airborne carbon 14c Sample Search Results  

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

Bern Collection: Environmental Sciences and Ecology ; Geosciences 65 Biomass and Bioenergy 31 (2007) 646655 Estimating biomass of individual pine trees using airborne...

123

E-Print Network 3.0 - airborne effluent control Sample Search...  

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

Science 7 Effluent Monitoring 4-1 4. Effluent Monitoring Summary: has a comprehensive air pollution control and monitoring program to ensure that airborne discharges... control...

124

E-Print Network 3.0 - airborne particulates european Sample Search...  

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

de mathmatiques Collection: Mathematics 12 Statistical Issues in the Study of Air Pollution Involving Airborne Particulate Matter Summary: Statistical Issues in the Study of...

125

E-Print Network 3.0 - air-borne power ultrasonic Sample Search...  

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

search results for: air-borne power ultrasonic Page: << < 1 2 3 4 5 > >> 1 Center for Industrial Sensors and Measurements Department Materials Science & Engineering Summary:...

126

E-Print Network 3.0 - airborne astronomy missions Sample Search...  

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

test and validate space exploration concepts safely fly-out the Space Shuttle... operations, conduct airborne remote sensing and science observations, and revolutionize...

127

E-Print Network 3.0 - airborne science program Sample Search...  

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

science program Search Powered by Explorit Topic List Advanced Search Sample search results for: airborne science program Page: << < 1 2 3 4 5 > >> 1 Natural Environment Research...

128

E-Print Network 3.0 - airborne moisture-indicating microorganisms...  

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

surface. In order to investigate the microorganisms present... obtained on the Marine Agar plates indicating a possible marine source for some of these airborne Source: Rainey,...

129

E-Print Network 3.0 - airborne bacterial spores Sample Search...  

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

immune recognition of airborne fungal spores, Nature, 460, 1117-1121, 2009... -236, 1966. Gilbert, G. S. and Reynolds, D. R.: Nocturnal fungi: ... Source: Martin, Scot T.- School...

130

E-Print Network 3.0 - airborne fine particulate Sample Search...  

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

particulate matter otherwise known as aerosols. However health risks from these pollutants... Airborne Pollution In urban environments What are the real health effects of...

131

An Airborne Spectrometer and Retrieval Development Project for Air Quality Measurements  

Science Journals Connector (OSTI)

The NASA-funded GeoTASO Instrument Incubator project will develop an airborne spectrometer, participate in field campaigns, and test trace gas and aerosol retrieval performance in...

Leitch, James; Valle, Tim; Hardesty, Chuck; Delker, Tom; Baker, Brian; Eskin, Joshua; Chance, Kelly; Liu, Xiong; Janz, Scott; Pickering, Ken; Wang, Jun

132

E-Print Network 3.0 - airborne trace element Sample Search Results  

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

Search Sample search results for: airborne trace element Page: << < 1 2 3 4 5 > >> 1 AIR-DEPOSITED POLLUTION IN THE ANACOSTIA RIVER WATERSHED Summary: pollution in Lake...

133

Remote Detection of Heated Ethanol Plumes by Airborne Passive Fourier Transform Infrared Spectrometry  

Science Journals Connector (OSTI)

Methodology is developed for the automated detection of heated plumes of ethanol vapor with airborne passive Fourier transform infrared spectrometry. Positioned in a fixed-wing...

Tarumi, Toshiyasu; Small, Gary W; Combs, Roger J; Kroutil, Robert T

2003-01-01T23:59:59.000Z

134

88 JOURNAL OF WEATHER MODiFiCATiON vOLUME 43 -TECHNICAL NOTES -CORRESPONDENCE -BOOK REVIEW  

E-Print Network [OSTI]

88 JOURNAL OF WEATHER MODiFiCATiON vOLUME 43 - TECHNICAL NOTES - CORRESPONDENCE - BOOK REVIEW much to unravel about the intricacies of aerosol interactions with tropical cyclones. First we need of other factors influencing TC intensity including SST, wind shear, and the moisture content of the lower

Rhode Island, University of

135

High Cloud Properties from Three Years of MODIS Terra and Aqua Collection-4 Data over the Tropics  

E-Print Network [OSTI]

High Cloud Properties from Three Years of MODIS Terra and Aqua Collection-4 Data over the Tropics) ABSTRACT This study surveys the optical and microphysical properties of high (ice) clouds over the Tropics on the gridded level-3 cloud products derived from the measurements acquired by the Moderate Resolution Imaging

Baum, Bryan A.

136

The application of hyperspectral image techniques on MODIS data for the detection of oil spills in the RSA1  

E-Print Network [OSTI]

The application of hyperspectral image techniques on MODIS data for the detection of oil spills Oceanography Centre, Empress Dock, Southampton, S014 3ZH, UK ABSTRACT Oil spills pose a serious threat to the sensitive marine ecosystem of the RSA. The study aims to detect and identify oil spills using remote sensing

Quartly, Graham

137

Airborne measurements of carbonaceous aerosols in southern Africa during  

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

Airborne measurements of carbonaceous aerosols in southern Africa during Airborne measurements of carbonaceous aerosols in southern Africa during the dry, biomass burning season Title Airborne measurements of carbonaceous aerosols in southern Africa during the dry, biomass burning season Publication Type Journal Article LBNL Report Number LBNL-50880 Year of Publication 2003 Authors Kirchstetter, Thomas W., Tihomir Novakov, and Peter V. Hobbs Journal Journal of Geophysical Research - Atmospheres Keywords black carbon, evolved gas analysis, light absorption, organic carbon, positive sampling artifact, SAFARI Abstract Particulate matter collected aboard the University of Washington's Convair-580 research aircraft over southern Africa during the dry, biomass burning season was analyzed for total carbon, organic carbon, and black carbon contents using thermal and optical methods. Samples were collected in smoke plumes of burning savanna and in regional haze. A known artifact, produced by the adsorption of organic gases on the quartz filter substrates used to collect the particulate matter samples, comprised a significant portion of the total carbon collected. Consequently, conclusions derived from the data are greatly dependent on whether or not organic carbon concentrations are corrected for this artifact. For example, the estimated aerosol co-albedo (1 - single scattering albedo), which is a measure of aerosol absorption, of the biomass smoke samples is 60% larger using corrected organic carbon concentrations. Thus, the corrected data imply that the biomass smoke is 60% more absorbing than do the uncorrected data. The black carbon to (corrected) organic carbon mass ratio (BC/OC) of smoke plume samples (0.18±0.06) is lower than that of samples collected in the regional haze (0.25±0.08). The difference may be due to mixing of biomass smoke with background air characterized by a higher BC/OC ratio. A simple source apportionment indicates that biomass smoke contributes about three-quarters of the aerosol burden in the regional haze, while other sources (e.g., fossil fuel burning) contribute the remainder.

138

Source Apportionment of Airborne Particulate Matter using Inorganic and  

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

Source Apportionment of Airborne Particulate Matter using Inorganic and Source Apportionment of Airborne Particulate Matter using Inorganic and Organic Species as Tracers Title Source Apportionment of Airborne Particulate Matter using Inorganic and Organic Species as Tracers Publication Type Journal Article Year of Publication 2012 Authors Wang, Yungang, Philip K. Hopke, X. Xia, Oliver V. Rattigan, David C. Chalupa, and M. J. Source Journal Atmospheric Environment Volume 55 Start Page 525 Pagination 525-532 Date Published 01/2012 Keywords source apportionment positive matrix factorization (pmf) particulate matter (pm) molecular markers (mm) aethalometer delta-c Abstract Source apportionment is typically performed on chemical composition data derived from particulate matter (PM) samples. However, many common sources no longer emit significant amounts of characteristic trace elements requiring the use of more comprehensive chemical characterization in order to fully resolve the PM sources. Positive matrix factorization (EPA PMF, version 4.1) was used to analyze 24-hr integrated molecular marker (MM), secondary inorganic ions, trace elements, carbonaceous species and light absorption data to investigate sources of PM2.5 in Rochester, New York between October 2009 and October 2010 to explore the role of specific MMs. An eight-factor solutionwas found for which the factors were identified as isoprene secondary organic aerosol (SOA), airborne soil, other SOA, diesel emissions, secondary sulfate, wood combustion, gasoline vehicle, and secondary nitrate contributing 6.9%, 12.8%, 3.7%, 7.8%, 45.5%, 9.1%, 7.9%, and 6.3% to the average PM2.5 concentration, respectively Concentrations of pentacosane, hexacosane, heptacosane, and octacosane in the gasoline vehicles factor were larger compared to diesel emissions. Aethalometer Delta-C was strongly associated with wood combustion. The compounds, n-heptacosanoic acid and n-octacosanoic acid, occasionally used in the past as tracers for road dust, were found to largely associate with SOA in this study. In comparison with a standard PMF analyses without MM, inclusion of themwas necessary to resolve SOA and wood combustion factors in urban areas.

139

Modular airborne remote sampling and sensing system (MARSSS)  

SciTech Connect (OSTI)

Sandia is developing a modular airborne instrumentation system for the Environmental Protection Agency. This system will allow flexibility in the choice of instruments by standardizing mountings, power supplies and sampling modes. The objective is to make it possible to perform aerial surveys from chartered aircraft that have not been adapted in a more than superficial manner. It will also allow the experimenter to tailor his choice of instruments to the specific problem. Since the equipment will have a stand-alone capability, it can be applied to other problems such as long-term unattended use at remote locations or in toxic or otherwise hazardous environments.

Woods, R.O.

1982-04-01T23:59:59.000Z

140

Prospecting by sampling and analysis of airborne particulates and gases  

DOE Patents [OSTI]

A method is claimed for prospecting by sampling airborne particulates or gases at a ground position and recording wind direction values at the time of sampling. The samples are subsequently analyzed to determine the concentrations of a desired material or the ratios of the desired material to other identifiable materials in the collected samples. By comparing the measured concentrations or ratios to expected background data in the vicinity sampled, one can select recorded wind directions indicative of the upwind position of the land-based source of the desired material.

Sehmel, G.A.

1984-05-01T23:59:59.000Z

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


141

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

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

142

Fast and Extensible Building Modeling from Airborne Qian-Yi Zhou  

E-Print Network [OSTI]

Fast and Extensible Building Modeling from Airborne LiDAR Data Qian-Yi Zhou University of Southern@graphics.usc.edu ABSTRACT This paper presents an automatic algorithm which recon- structs building models from airborne Li LiDAR(light detection and ranging), building modeling, seg- mentation, building footprints 1

Southern California, University of

143

Using Cell Phones to Detect Harmful Airborne Engineering lab named after company that hopes to commercialize  

E-Print Network [OSTI]

Using Cell Phones to Detect Harmful Airborne Substances Engineering lab named after company focused on using mobile devices, such as cell phones, to detect harmful airborne substances in real detection capabilities with mobile devices, including cell phones that can interface global positioning

144

Biomass and Bioenergy 31 (2007) 646655 Estimating biomass of individual pine trees using airborne lidar  

E-Print Network [OSTI]

Biomass and Bioenergy 31 (2007) 646­655 Estimating biomass of individual pine trees using airborne biomass and bio-energy feedstocks. The overall goal of this study was to develop a method for assessing aboveground biomass and component biomass for individual trees using airborne lidar data in forest settings

145

Estimating the Evaporative Cooling Bias of an Airborne Reverse Flow Thermometer YONGGANG WANG AND BART GEERTS  

E-Print Network [OSTI]

Estimating the Evaporative Cooling Bias of an Airborne Reverse Flow Thermometer YONGGANG WANG form 24 June 2008) ABSTRACT Airborne reverse flow immersion thermometers were designed to prevent in cloud is surmised because air decelerates into the thermometer housing, and thus is heated and becomes

Geerts, Bart

146

Generation and analysis of the 2005 land cover map for Mexico using 250 m MODIS data  

Science Journals Connector (OSTI)

Land cover plays a key role in global to regional monitoring and modeling because it affects and is being affected by climate change and thus became one of the essential variables for climate change studies. National and international organizations require timely and accurate land cover information for reporting and management actions. The North American Land Change Monitoring System (NALCMS) is an international cooperation of organizations and entities of Canada, the United States, and Mexico to map land cover change of North America's changing environment. This paper presents the methodology to derive the land cover map of Mexico for the year 2005 which was integrated in the NALCMS continental map. Based on a time series of 250 m Moderate Resolution Imaging Spectroradiometer (MODIS) data and an extensive sample data base the complexity of the Mexican landscape required a specific approach to reflect land cover heterogeneity. To estimate the proportion of each land cover class for every pixel several decision tree classifications were combined to obtain class membership maps which were finally converted to a discrete map accompanied by a confidence estimate. The map yielded an overall accuracy of 82.5% (Kappa of 0.79) for pixels with at least 50% map confidence (71.3% of the data). An additional assessment with 780 randomly stratified samples and primary and alternative calls in the reference data to account for ambiguity indicated 83.4% overall accuracy (Kappa of 0.80). A high agreement of 83.6% for all pixels and 92.6% for pixels with a map confidence of more than 50% was found for the comparison between the land cover maps of 2005 and 2006. Further wall-to-wall comparisons to related land cover maps resulted in 56.6% agreement with the MODIS land cover product and a congruence of 49.5 with Globcover.

René R. Colditz; Gerardo López Saldaña; Pedro Maeda; Jesús Argumedo Espinoza; Carmen Meneses Tovar; Arturo Victoria Hernández; Carlos Zermeño Benítez; Isabel Cruz López; Rainer Ressl

2012-01-01T23:59:59.000Z

147

Airborne Electromagnetic Survey At Chena Area (Erkan, Et. Al., 2008) | Open  

Open Energy Info (EERE)

Airborne Electromagnetic Survey At Chena Area (Erkan, Et. Al., 2008) Airborne Electromagnetic Survey At Chena Area (Erkan, Et. Al., 2008) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Airborne Electromagnetic Survey At Chena Area (Erkan, Et. Al., 2008) Exploration Activity Details Location Chena Geothermal Area Exploration Technique Airborne Electromagnetic Survey Activity Date 2008 Usefulness not indicated DOE-funding Unknown Notes The airborne resistivity (Fig. 2; panel c) shows high values in most of the areas including the Chena pluton, with the exception of the very northern and southern portion of the map where the Paleozoic metamorphic unit is located. Lineations of low resistivity at the west end of the area are generally associated with the location of the valley fill. However, some

148

A Relaxation Strategy for the Optimization of Airborne Wind Energy Sebastien Gros, M. Zanon and Moritz Diehl  

E-Print Network [OSTI]

A Relaxation Strategy for the Optimization of Airborne Wind Energy Systems S´ebastien Gros, M. Zanon and Moritz Diehl Abstract-- Optimal control is recognized by the Airborne Wind Energy (AWE problem. Keywords : airborne wind energy, optimal control, non- convex optimization, flight control I

149

A Case Study of Radar Observations and WRF LES Simulations of the Impact of Ground-Based Glaciogenic Seeding on Orographic Clouds and Precipitation. Part I: Observations and Model Validations  

Science Journals Connector (OSTI)

Profiling airborne radar data and accompanying large-eddy-simulation (LES) modeling are used to examine the impact of ground-based glaciogenic seeding on cloud and precipitation in a shallow stratiform orographic winter storm. This storm occurred ...

Xia Chu; Lulin Xue; Bart Geerts; Roy Rasmussen; Daniel Breed

2014-10-01T23:59:59.000Z

150

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

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

151

COLLECTION OF AIRBORNE PARTICLES BY A HIGH-GRADIENT PERMANENT MAGNETIC METHOD  

SciTech Connect (OSTI)

We report on the use of magnetic force in collection of airborne particles by a high- gradient permanent magnetic separation (HGPMS) device. Three aerosol particles of different magnetic susceptibility (NaCl, CuO, and Fe2O3) were generated in the electrical mobility size range of 10 to 200 nm and were used to study HGPMS collection. One HGPMS matrix element, made of stainless steel wool, was used in the device configuration. Three flow rates were selected to simulate the environmental wind speeds of interest to the study. Magnetic force was found to exhibit an insignificant effect on the separation of NaCl particles, even in the HGPMS configuration. Diffusion was a major mechanism in the removal of the diamagnetic particles; however, diffusion is insignificant under the influence of a high-gradient magnetic field for paramagnetic or ferromagnetic particles. The HGPMS showed high-performance collection (> 99%) of paramagnetic CuO and ferromagnetic Fe2O3 particles for particle sizes greater than or equal to 60 nm. As the wind speed increases, the influence of the magnetic force weakens, and the capability to remove particles from the gas stream diminishes. The results suggest that the HGPMS principle could be explored for development of an advanced miniaturized passive aerosol collector.

Cheng, Mengdawn [ORNL; Allman, Steve L [ORNL; Ludtka, Gerard Michael [ORNL; Avens, Larry R [ORNL

2014-01-01T23:59:59.000Z

152

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

E-Print Network [OSTI]

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

Zhao, Panshu

2012-07-16T23:59:59.000Z

153

New Approaches to Differential Mobility Analysis for Airborne Measurements  

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

to Differential Mobility to Differential Mobility Analysis for Airborne Measurements Rick Flagan Chemical Engineering and Environmental Science and Engineering California Institute of Technology Pasadena, CA 91125 Support: NSF, ONR, Davidow Foundation Differential Mobility Analysis Air Sample Aerosol Charger/Neutralizer (Atmospheric Pressure Chemical Ionization) Sheath Air Q sh ~ 10 Q a Volumetric flow rate Q s Exhaust Q ex =Q sh Differential Mobility Analyzer DMA (Aerodynamic Analog of Sector Mass Spectrometer) E F e =eE F drag = 6πµR p V C slip (λ /R p ) CPC Q a =Q s Steady or Scanned Voltage Migration Velocity * Mobility * Peclet number for migration v E = Z p E Z p = n p e k B T D Pe mig = electrophoretic migration diffusive transport = bv E D = bn p eE k B T Singly Charged Particles  Radial DMA  Cylindrical DMA E = V b Pe = eV k B T E =

154

Application Of Airborne Thermal Infrared Imagery To Geothermal Exploration  

Open Energy Info (EERE)

Thermal Infrared Imagery To Geothermal Exploration Thermal Infrared Imagery To Geothermal Exploration Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Conference Paper: Application Of Airborne Thermal Infrared Imagery To Geothermal Exploration Details Activities (0) Areas (0) Regions (0) Abstract: Burlington Northern (BN) conducted TIR surveys using a fixed wing aircraft over 17 different geothermal prospects in Washington, Montana and Wyoming because of this remote sensing tool's ability to detect variations in the heat emitted from the earth's surface. The surveys were flown at an average elevation of 5000 ft. above the ground surface which gave a spatial resolution of approximately 7 feet diameter. BN found thermal activity which had not been recognized previously in some prospects (e.g., Lester,

155

Final report. Electro-Seise, Inc., Airborne Survey  

SciTech Connect (OSTI)

The Rocky Mountain Oilfield Testing Center (RMOTC) has recently completed a test of an airborne microgravity and electric field sensing technology developed by Electro-Seise, Inc. of Fort Worth, Texas. The test involved the use of a single engine airplane to gather data over the Teapot Dome oil field along a tight grid spacing and along thirty (30) survey lines. The resultant gravity structure maps, based on the field data, were found to overlay the known structure of Teapot Dome. In addition, fault maps, based on the field data, were consistent with the known fault strike at Teapot Dome. Projected hydrocarbon thickness maps corresponded to some of the known production histories at RMOTC. Exceptions to the hydrocarbon thickness maps were also found to be true.

Schulte, Ralph

2001-06-01T23:59:59.000Z

156

Clean enough for industry? An airborne geophysical case study  

SciTech Connect (OSTI)

Data from two airborne geophysical surveys of the Department of Energy`s Oak Ridge Reservation (ORR) were extremely valuable in deciding whether a 1000-acre (400 hectare) parcel of the ORR should be released to the City of Oak Ridge for industrial development. Our findings, based on electromagnetic and magnetic data, were incorporated in the federally mandated Environmental Assessment Statement (EAS), and in general supported claims that this land was never used as a hazardous waste disposal site. We estimated the amount of iron required to produce each anomaly using a simple dipole model. All anomalies with equivalent sources greater than approximately 1000 kg of iron were checked in the field, and the source of all but one identified as either a bridge, reinforced concrete debris, or a similarly benign object. Additionally, some smaller anomalies (equivalent sources of roughly 500 kg) have been checked; thus far, these also have innocuous sources. Airborne video proved invaluable in identifying logging equipment as the source of some of these anomalies. Geologic noise may account for some of the remaining anomalies. Naturally occurring accumulations of magnetic minerals in the soil on the ORR have been shown to produce anomalies which, at a sensor height of 30 m, are comparable to the anomaly produced by about 500 kg of iron. By comparison, the electronic noise of the magnetic gradiometer, 0.01--0.02 nT/m, is equivalent to only about 50--100 kg of iron at a 30 m sensor height. The electromagnetic data, combined with field mapping of karst structures, provided evidence of a northeast-southwest striking conduit spanning the parcel. The possible existence of a karst conduit led the EAS authors to conclude that this is a ``sensitive hydrologic setting.`` We conclude that aerial geophysics is an extremely cost-effective, and efficient technique for screening large tracts of land for environmental characterization.

Nyquist, J.E.; Beard, L.P.

1996-02-01T23:59:59.000Z

157

E-Print Network 3.0 - airborne profiling laser Sample Search...  

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

profiling laser Search Powered by Explorit Topic List Advanced Search Sample search results for: airborne profiling laser Page: << < 1 2 3 4 5 > >> 1 This special issue ofThis...

158

E-Print Network 3.0 - airborne laser mapping Sample Search Results  

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

Powered by Explorit Topic List Advanced Search Sample search results for: airborne laser mapping Page: << < 1 2 3 4 5 > >> 1 This special issue ofThis special issue of...

159

The Airborne Cloud–Aerosol Transport System: Overview and Description of the Instrument and Retrieval Algorithms  

Science Journals Connector (OSTI)

The Airborne Cloud–Aerosol Transport System (ACATS) is a Doppler wind lidar system that has recently been developed for atmospheric science capabilities at the NASA Goddard Space Flight Center (GSFC). ACATS is also a high-spectral-resolution lidar ...

John E. Yorks; Matthew J. McGill; V. Stanley Scott; Shane W. Wake; Andrew Kupchock; Dennis L. Hlavka; William D. Hart; Patrick A. Selmer

2014-11-01T23:59:59.000Z

160

Design of a small fast steering mirror for airborne and aerospace applications  

E-Print Network [OSTI]

This thesis presents the analysis and design of a small advanced fast steering mirror (sAFSM) for airborne and aerospace platforms. The sAFSM provides feedback-controlled articulation of two rotational axes for precision ...

Boulet, Michael Thomas

2008-01-01T23:59:59.000Z

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

E-Print Network 3.0 - airborne particulate samples Sample Search...  

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

<< < 1 2 3 4 5 > >> 1 Correlating Bioaerosol Load with PM2.5 and PM10 Concentrations Jordan Peccia1, Ann M. Dillner1,2, Justin Boreson1 Summary: an airborne sample. Figure 3:...

162

E-Print Network 3.0 - airborne particles pm10 Sample Search Results  

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

<< < 1 2 3 4 5 > >> 1 Correlating Bioaerosol Load with PM2.5 and PM10 Concentrations Jordan Peccia1, Ann M. Dillner1,2, Justin Boreson1 Summary: exposure of airborne biological...

163

E-Print Network 3.0 - airborne fungi particulate Sample Search...  

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

<< < 1 2 3 4 5 > >> 1 Correlating Bioaerosol Load with PM2.5 and PM10 Concentrations Jordan Peccia1, Ann M. Dillner1,2, Justin Boreson1 Summary: of airborne particulate matter....

164

E-Print Network 3.0 - airborne particulates Sample Search Results  

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

<< < 1 2 3 4 5 > >> 1 Correlating Bioaerosol Load with PM2.5 and PM10 Concentrations Jordan Peccia1, Ann M. Dillner1,2, Justin Boreson1 Summary: of airborne particulate matter....

165

E-Print Network 3.0 - airborne particulate matter Sample Search...  

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

<< < 1 2 3 4 5 > >> 1 Correlating Bioaerosol Load with PM2.5 and PM10 Concentrations Jordan Peccia1, Ann M. Dillner1,2, Justin Boreson1 Summary: of airborne particulate matter....

166

NASA Cold Land Processes Experiment (CLPX 2002/03): Airborne Remote Sensing  

Science Journals Connector (OSTI)

This paper describes the airborne data collected during the 2002 and 2003 Cold Land Processes Experiment (CLPX). These data include gamma radiation observations, multi- and hyperspectral optical imaging, optical altimetry, and passive and active ...

Don Cline; Simon Yueh; Bruce Chapman; Boba Stankov; Al Gasiewski; Dallas Masters; Kelly Elder; Richard Kelly; Thomas H. Painter; Steve Miller; Steve Katzberg; Larry Mahrt

2009-02-01T23:59:59.000Z

167

E-Print Network 3.0 - airborne gamma-ray spectra Sample Search...  

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

Powered by Explorit Topic List Advanced Search Sample search results for: airborne gamma-ray spectra Page: << < 1 2 3 4 5 > >> 1 Ivan De Mitri VHE Gamma Ray Astronomy 1 Very High...

168

E-Print Network 3.0 - airborne gamma ray Sample Search Results  

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

Powered by Explorit Topic List Advanced Search Sample search results for: airborne gamma ray Page: << < 1 2 3 4 5 > >> 1 Evaluating the Impact of Advanced Memory Systems on...

169

E-Print Network 3.0 - airborne gamma-ray spectrometer Sample...  

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

Powered by Explorit Topic List Advanced Search Sample search results for: airborne gamma-ray spectrometer Page: << < 1 2 3 4 5 > >> 1 GAMMA RAYS FROM MAJOR ELEMENTS BY THERMAL...

170

Modeling Plot-Level Biomass and Volume Using Airborne and Terrestrial Lidar Measurements  

E-Print Network [OSTI]

The United States Forest Service (USFS) Forest Inventory and Analysis (FIA) program provides a diverse selection of data used to assess the status of the nation’s forested areas using sample locations dispersed throughout the country. Airborne...

Sheridan, Ryan D.

2012-07-16T23:59:59.000Z

171

Airborne release fractions/rates and respirable fractions for nonreactor nuclear facilities. Volume 2, Appendices  

SciTech Connect (OSTI)

This document contains compiled data from the DOE Handbook on Airborne Release Fractions/Rates and Respirable Fractions for Nonreactor Nuclear facilities. Source data and example facilities utilized, such as the Plutonium Recovery Facility, are included.

Not Available

1994-12-01T23:59:59.000Z

172

Airborne Toxic (“Big 5”) and GHG (CO2) Emissions: Italy 1991–1995  

Science Journals Connector (OSTI)

This paper presents a cursory examination of the possible evolution of airborne pollutants in Italy over the period 1991–1995. Also included are two brief digressions of more general scope on (i) cost-effectiv...

Peter L. Fano

1993-01-01T23:59:59.000Z

173

E-Print Network 3.0 - air-borne dust conditions Sample Search...  

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

L., Guo, J., Dan, M., Zhang, W., Wang, Z., and Hao, Z.: The air-borne particulate pollution... Discussions Regional characteristics of spring Asian dust and its impact on...

174

E-Print Network 3.0 - airborne heavy metals Sample Search Results  

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

61 Subpart H: National Emission... - sions, and Table 4-1 presents the airborne release data from each of these facilities during 2003... County Article 12, which regulates storage...

175

Airborne CO2 DIAL measurement of atmospheric tracer gas concentration distributions  

Science Journals Connector (OSTI)

An airborne differential absorption lidar system employing high-energy line-tunable CO2 lasers has been used to map cross-plume vertical distributions resulting from a...

Uthe, Edward E

1986-01-01T23:59:59.000Z

176

Airborne Particulate Matter in HVAC Systems and its Influence on Indoor Air Quality  

E-Print Network [OSTI]

This paper first reviews the mechanisms governing movement of PMs in HVAC systems. Then, the basic equations governing PM deposition in ducts are introduced and investigations on airborne PMs distribution in HVAC systems are reviewed. The influence...

Fu, Z.; Li, N.; Wang, H.

2006-01-01T23:59:59.000Z

177

E-Print Network 3.0 - airborne particle generated Sample Search...  

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

is being developed for airborne... consider the issue of convective heat transfer to the ice and water particles moving with the air flow... particles larger than 100 m are...

178

E-Print Network 3.0 - airborne particles generated Sample Search...  

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

is being developed for airborne... consider the issue of convective heat transfer to the ice and water particles moving with the air flow... particles larger than 100 m are...

179

E-Print Network 3.0 - accidental airborne releases Sample Search...  

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

release in: 1987 12 kg TEQs 1995 3 kg TEQs 12;Human... Exposure to Dioxins Airborne dioxins bind to particles and deposit on plants, soil and in waterways Primary... ;Accidental...

180

Uncertainties Associated with Combining Airborne and Ground-Based Doppler Radar Data  

Science Journals Connector (OSTI)

Observations with airborne Doppler radar can expand the area of coverage and extend the time a moving weather system can remain under observation. Also, additional analysis methods are possible with the increase in independent estimates of the ...

Peter S. Ray; David P. Jorgensen

1988-04-01T23:59:59.000Z

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

A Portable Airborne Scanning Lidar System for Ocean and Coastal Applications  

Science Journals Connector (OSTI)

A portable compact airborne scanning lidar system based on the Riegl LMS-Q240i has been developed and its functionality demonstrated for oceanographic and coastal measurements. Differential GPS (DGPS) and an inertial navigation system are ...

Benjamin D. Reineman; Luc Lenain; David Castel; W. Kendall Melville

2009-12-01T23:59:59.000Z

182

Airborne dust in Saudi Arabia : source areas, entrainment, simulation and composition.  

E-Print Network [OSTI]

??Spatial and temporal characteristics of dust storm activity in Saudi Arabia has been established using coarse-particle (PM10) dust concentrations recorded by the KACST monitoring network… (more)

Alharbi, Badr Hadhidh A

2009-01-01T23:59:59.000Z

183

SIMULATION AND EXPERIMENTAL VALIDATION OF AIRBORNE AND STRUCTURE-BORNE NOISE TRANSMISSION IN HVAC PLENUMS.  

E-Print Network [OSTI]

??This research demonstrates the usage of numerical acoustics to model sound and vibrational energy propagation in HVAC ducts and plenums. Noise and vibration in HVAC… (more)

Ramalingam, Srinivasan

2012-01-01T23:59:59.000Z

184

Airborne sound propagation over sea during offshore wind farm piling  

Science Journals Connector (OSTI)

Offshore piling for wind farm construction has attracted a lot of attention in recent years due to the extremely high noise emission levels associated with such operations. While underwater noise levels were shown to be harmful for the marine biology the propagation of airborne piling noise over sea has not been studied in detail before. In this study detailed numerical calculations have been performed with the Green's Function Parabolic Equation (GFPE) method to estimate noise levels up to a distance of 10?km. Measured noise emission levels during piling of pinpiles for a jacket-foundation wind turbine were assessed and used together with combinations of the sea surface state and idealized vertical sound speed profiles (downwind sound propagation). Effective impedances were found and used to represent non-flat sea surfaces at low-wind sea states 2 3 and 4. Calculations show that scattering by a rough sea surface which decreases sound pressure levels exceeds refractive effects which increase sound pressure levels under downwind conditions. This suggests that the presence of wind even when blowing downwind to potential receivers is beneficial to increase the attenuation of piling sound over the sea. A fully flat sea surface therefore represents a worst-case scenario.

2014-01-01T23:59:59.000Z

185

Dynamic mechanism of micromachined electrostatic airborne ultrasonic transducers  

Science Journals Connector (OSTI)

Micromachining technology allows electrostatic (or capacitive) airborne ultrasonic transducers to be made with highly reproducible characteristics thus providing the possibility to model their behaviors reliably. The behavior of a transducer depends on its geometric structure and the materials to be used. Its mechanical stiffness results from the compressibility of air in cavities the bending stiffness of the diaphragm and the plane tension applied to the diaphragm if any. It is clarified that there are two main types of dynamic mechanisms according to different structures. In one type in which the air in cavities is enclosed the diaphragm can be treated as a thin plate supported by an air spring or a plate founded on an air cushion thus adopting the plate?on?air–spring model or short?tube model such as those transducers with V?grooved U?grooved or pit?array?texture backplates [L.?F. Ge Chin. Sci. Bull. Acad. Sin. 10 (1997)]. In a second type air is not enclosed so that the effect of air spring can be omitted thereby taking the membrane?under?tension model such as conventional condenser microphones and ultrasonic transducers with acoustic holes. Resonant frequencies of a transducer can be determined by the vanishing of the reactance of its inversive impedance [L.?F. Ge J. Acoust. Soc. Am. 96 3318 (1994)]. [Work supported by the 211 Engineering Foundation of Anhui University.

Li?Feng Ge

1997-01-01T23:59:59.000Z

186

Crop specific green area index retrieval from MODIS data at regional scale by controlling pixel-target adequacy  

Science Journals Connector (OSTI)

Information on vegetation status can be retrieved from satellite observations by modelling and inverting canopy radiative transfer. Agricultural monitoring and yield forecasting could greatly benefit from such techniques by coupling crop growth models with crop specific information through data assimilation. An indicator which would be particularly interesting to obtain from remote sensing is the total surface of photosynthetically active plant tissue, or green area index (GAI). Currently, the major limitation is that the imagery that can be used operationally and economically over large areas with high temporal frequency has a coarse spatial resolution. This paper demonstrates how it is possible to characterise the regional crop specific GAI range along with its temporal dynamic using MODIS imagery by controlling the degree at which the observation footprints of the coarse pixels fall within the crop-specific mask delineating the target. This control is done by modelling the instrument's point spread function and by filtering out less reliable GAI estimations in both the spatial and temporal dimensions using thresholds on 3 variables: pixel purity, observation coverage and view zenith angle. The difference in performance between MODIS and fine spatial resolution to estimate the median GAI of a given crop over a 40 × 40 km study region can be reduced to a RMSE of 0.053 m2/m2. The consistency between fine and coarse spatial resolution GAI estimations suggests a possible instrument synergy whereby the high temporal resolution of MODIS provides the general GAI trajectory and while high spatial resolution can be used to estimate the local GAI spatial heterogeneity.

Grégory Duveiller; Frédéric Baret; Pierre Defourny

2011-01-01T23:59:59.000Z

187

Retrieval of Cloud Phase and Crystal Habit from Multiangle Imaging Spectroradiometer (MISR) and Moderate Resolution Imaging Spectroradiometer (MODIS) Data  

SciTech Connect (OSTI)

A method of retrieving cloud phase and the dominant ice crystal habit from radiances measured by the Multi-angle Imaging Spectro-Radiometer (MISR) and the Moderate Resolution Imaging Spectroradiometer (MODIS) has been developed. The retrieval method takes advantage of the differences in the phase function of various particle shapes as a function of scattering angle. Three case studies are presented which illustrate the retrieval method. A comparison with semi-coincident in situ observations for one case study indicates that the retrieved crystal habits are consistent with the observations.

McFarlane, Sally A.; Marchand, Roger T.; Ackerman, Thomas P.

2005-07-22T23:59:59.000Z

188

Emissions of airborne toxics from coal-fired boilers: Mercury  

SciTech Connect (OSTI)

Concerns over emissions of hazardous air Pollutants (air toxics) have emerged as a major environmental issue, and the authority of the US Environmental Protection Agency to regulate such pollutants was greatly expanded through the Clean Air Act Amendments of 1990. Mercury has been singled out for particular attention because of concerns over possible effects of emissions on human health. This report evaluates available published information on the mercury content of coals mined in the United States, on mercury emitted in coal combustion, and on the efficacy of various environmental control technologies for controlling airborne emissions. Anthracite and bituminous coals have the highest mean-mercury concentrations, with subbituminous coals having the lowest. However, all coal types show very significant variations in mercury concentrations. Mercury emissions from coal combustion are not well-characterized, particularly with regard to determination of specific mercury compounds. Variations in emission rates of more than an order of magnitude have been reported for some boiler types. Data on the capture of mercury by environmental control technologies are available primarily for systems with electrostatic precipitators, where removals of approximately 20% to over 50% have been reported. Reported removals for wet flue-gas-desulfurization systems range between 35 and 95%, while spray-dryer/fabric-filter systems have given removals of 75 to 99% on municipal incinerators. In all cases, better data are needed before any definitive judgments can be made. This report briefly reviews several areas of research that may lead to improvements in mercury control for existing flue-gas-clean-up technologies and summarizes the status of techniques for measuring mercury emissions from combustion sources.

Huang, H.S.; Livengood, C.D.; Zaromb, S.

1991-09-01T23:59:59.000Z

189

MODIS NDVI time-series allow the monitoring of Eucalyptus plantation biomass  

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The use of remote sensing is necessary for monitoring forest carbon stocks at large scales. Optical remote sensing, although not the most suitable technique for the direct estimation of stand biomass, offers the advantage of providing large temporal and spatial datasets. In particular, information on canopy structure is encompassed in stand reflectance time series. This study focused on the example of Eucalyptus forest plantations, which have recently attracted much attention as a result of their high expansion rate in many tropical countries. Stand scale time-series of Normalized Difference Vegetation Index (NDVI) were obtained from MODIS satellite data after a procedure involving un-mixing and interpolation, on about 15,000 ha of plantations in southern Brazil. The comparison of the planting date of the current rotation (and therefore the age of the stands) estimated from these time series with real values provided by the company showed that the root mean square error was 35.5 days. Age alone explained more than 82% of stand wood volume variability and 87% of stand dominant height variability. Age variables were combined with other variables derived from the NDVI time series and simple bioclimatic data by means of linear (Stepwise) or nonlinear (Random Forest) regressions. The nonlinear regressions gave r-square values of 0.90 for volume and 0.92 for dominant height, and an accuracy of about 25 m3/ha for volume (15% of the volume average value) and about 1.6 m for dominant height (8% of the height average value). The improvement including NDVI and bioclimatic data comes from the fact that the cumulative NDVI since planting date integrates the interannual variability of leaf area index (LAI), light interception by the foliage and growth due for example to variations of seasonal water stress. The accuracy of biomass and height predictions was strongly improved by using the NDVI integrated over the two first years after planting, which are critical for stand establishment. These results open perspectives for cost-effective monitoring of biomass at large scales in intensively-managed plantation forests.

Guerric le Maire; Claire Marsden; Yann Nouvellon; Clovis Grinand; Rodrigo Hakamada; José-Luiz Stape; Jean-Paul Laclau

2011-01-01T23:59:59.000Z

190

Ground-Based and Airborne (PMS 2-D Probe Canister-Mounted) 183 GHz Water  

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Ground-Based and Airborne (PMS 2-D Probe Canister-Mounted) 183 GHz Water Ground-Based and Airborne (PMS 2-D Probe Canister-Mounted) 183 GHz Water Vapor Radiometer Pazmany, Andrew ProSensing Inc. Category: Instruments ProSensing Inc. has developed a G-band (183 GHz, 1.5 mm wavelength) water vapor radiometer (GVR) for the measurement of low concentrations of atmospheric water vapor and liquid water. The instrument's precipitable water vapor measurement precision is approximately 0.01 mm in dry (<2 mm vapor column) conditions. The ground-based version of the instrument was first deployed at ProSensing's facility in Amherst, MA in February 2005, then at the North Slope of Alaska DOE ARM site in Barrow AK in April 2005, where it has been continuously operating since. An airborne version, designed to operate from a standard PMS 2-D probe canister, is now being

191

A refined biomonitoring study of airborne particulate matter pollution in Rome, with magnetic measurements on Quercus Ilex tree leaves  

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......delineate spatial airborne anthropogenic PM...the PM magnetic fraction which can then be...constructions or natural fires. This study has...particles in the airborne PM by means of standard...idling cars do not release an equally high...of the magnetic fraction. In this study......

Michael Szönyi; Leonardo Sagnotti; Ann M. Hirt

2008-04-01T23:59:59.000Z

192

Direct Insertion of MODIS Radiances in a Global Aerosol Transport Model CLARK WEAVER,* ARLINDO DA SILVA, MIAN CHIN,# PAUL GINOUX,@ OLEG DUBOVIK,&,@@  

E-Print Network [OSTI]

is directly inserted into the Goddard Chemistry and Aerosol Radiation Transport model (GOCART), which aerosol radiative forcing in the thermody- namic equation of GCMs, 3) to account for the reduc- tionDirect Insertion of MODIS Radiances in a Global Aerosol Transport Model CLARK WEAVER,* ARLINDO DA

Chin, Mian

193

Regional Assessments of Low Clouds Against Large-Scale Stability in CAM5 and CAM-CLUBB Using MODIS and ECMWF-Interim Reanalysis Data  

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Daily gridded cloud data from MODIS and ERA-Interim reanalysis have been assessed to examine variations of low cloud fraction (CF) and cloud top height and their dependence on large-scale dynamics and a measure of stability. In order to assess the ...

Terence L. Kubar; Graeme L. Stephens; Matthew Lebsock; Vincent E. Larson; Peter A. Bogenschutz

194

Size Distributions of Airborne Radionuclides from the Fukushima Nuclear Accident at Several Places in Europe  

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Size Distributions of Airborne Radionuclides from the Fukushima Nuclear Accident at Several Places in Europe ... (8) After about 10 days following the beginning of the releases, contaminated air masses reached Europe and yielded to an unusual airborne concentration for 2–3 weeks,(8) even if this was of no concern for public health thanks to atmospheric dispersion and deposition along the route from Japan. ... (35) In our opinion this “gas-to-particle conversion” results mainly from the adsorption of gas on particles. ...

Olivier Masson; Wolfgang Ringer; Helena Malá; Petr Rulik; Magdalena Dlugosz-Lisiecka; Konstantinos Eleftheriadis; Olivier Meisenberg; Anne De Vismes-Ott; François Gensdarmes

2013-09-03T23:59:59.000Z

195

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

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

196

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

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

197

ARM - Field Campaign - NASA Coordinated Airborne CO2 Lidar Flight Test  

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

govCampaignsNASA Coordinated Airborne CO2 Lidar Flight Test Campaign govCampaignsNASA Coordinated Airborne CO2 Lidar Flight Test Campaign Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Campaign : NASA Coordinated Airborne CO2 Lidar Flight Test Campaign 2009.07.27 - 2009.08.07 Lead Scientist : Edward Browell For data sets, see below. Description This airborne field test campaign was designed to obtain a coordinated set of remote CO2 Laser Absorption Spectrometer (LAS) measurements using the NASA Langley/ITT 1.57-micron Continuous-Wave (CW) LAS operating from the NASA Langley UC-12 aircraft; the NASA Goddard 1.57-micron pulsed LAS operating from the NASA Glenn Lear-25 aircraft; and the NASA Jet Propulsion Laboratory 2.0-micron CW-coherent LAS operating from a contracted Twin Otter aircraft. These remote LAS CO2 column measurements were compared with

198

The Airborne Aero-Optics Laboratory, AAOL Eric J. Jumpera1  

E-Print Network [OSTI]

and around an aircraft has on a laser projected or received by an optical system. The background also the usefulness of airborne high-energy lasers [1]. The ALL used a carbon-dioxide, gas- dynamic laser; but, the laser's long wavelength (10.6 m) limited its range and intensity on target. From a diffraction

Gordeyev, Stanislav

199

KuROS: A New Airborne Ku-Band Doppler Radar for Observation of Surfaces  

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This study presents the new airborne Doppler radar Ku-Band Radar for Observation of Surfaces (KuROS), which provides measurements of the normalized radar cross section ?° and of the Doppler velocity over the sea. The system includes two antennas ...

Gérard Caudal; Danièle Hauser; René Valentin; Christophe Le Gac

2014-10-01T23:59:59.000Z

200

DETECTION OF IMPULSE-LIKE AIRBORNE SOUND FOR DAMAGE IDENTIFICATION IN ROTOR BLADES OF WIND TURBINES  

E-Print Network [OSTI]

DETECTION OF IMPULSE-LIKE AIRBORNE SOUND FOR DAMAGE IDENTIFICATION IN ROTOR BLADES OF WIND TURBINES burdens of wind turbines. To detect damage of rotor blades, several research projects focus on an acoustic, rotor blade, wind turbine INTRODUCTION There are several publications of non destructive damage

Boyer, Edmond

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

Airborne release fraction -ARF- and respirable fraction -RF- for foot pack cans in fires  

SciTech Connect (OSTI)

The purpose of this analysis is to provide the airborne release fraction (ARF), respirable fraction (RF) and respirable release as a fraction of initial mass for Food Pack Cans (FPCs) containing plutonium powders (e.g., oxide) that become pressurized to the point of bursting in a fire.

CARSON, D.M.

2002-06-05T23:59:59.000Z

202

Savannah River Site Ingestion Pathway Methodology Manual for Airborne Radioactive Releases  

SciTech Connect (OSTI)

This manual documents a recommended methodology for determining the ingestion pathway consequences of hypothetical accidental airborne radiological releases from facilities at the Savannah River Site. Both particulate and tritiated radioactive contaminants are addressed. Other approaches should be applied for evaluation of routine releases.

Vincent, A.W. III

2001-01-03T23:59:59.000Z

203

Airborne observations of methane emissions from rice cultivation in the Sacramento Valley of California  

E-Print Network [OSTI]

, the California Air Resources Board (CARB) greenhouse gas inventory emission rate of 2.7 Ã? 1010 g CH4/yr is not accounted for in the CARB inventory. Citation: Peischl, J., et al. (2012), Airborne observations of methane California, which include livestock, landfills, wastewater treatment, oil and gas drilling and distribution

Cohen, Ronald C.

204

Analysis and Design of a Novel Three-Level LLCC Inverter Supplying an Airborne Piezoelectric  

E-Print Network [OSTI]

Analysis and Design of a Novel Three-Level LLCC Inverter Supplying an Airborne Piezoelectric Brake on the investigation of a novel single-phase three-level PWM inverter in the kW power range, feeding a high power multi suit best to the needs of ultrasonic motors has been conducted. A resonant inverter with LLCC

Paderborn, Universität

205

Short-Term Temporal Variability in Airborne Bacterial and Fungal Populations  

Science Journals Connector (OSTI)

...Harvard University, Cambridge, Massachusetts 02142 Airborne microorganisms...conditions (e.g., wind speed, solar radiation, and humidity...at the Broad Institute of Massachusetts Institute of Technology and...hPa) 836 833 829 831 833 Solar irradiance (W m2) 394 628...

Noah Fierer; Zongzhi Liu; Mari Rodríguez-Hernández; Rob Knight; Matthew Henn; Mark T. Hernandez

2007-11-02T23:59:59.000Z

206

IONOSPHERIC THREATS TO THE INTEGRITY OF AIRBORNE GPS USERS A DISSERTATION  

E-Print Network [OSTI]

IONOSPHERIC THREATS TO THE INTEGRITY OF AIRBORNE GPS USERS A DISSERTATION SUBMITTED threats to user safety if left unmitigated. This work identifies when such disturbances may occur using indicates the need for a non-trivial threat model for the Federal Aviation Administration's Local Area

Stanford University

207

Resuspension of Soil as a Source of Airborne Lead near Industrial Facilities and Highways  

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Resuspension of Soil as a Source of Airborne Lead near Industrial Facilities and Highways ... To examine the potential significance of this mechanism, surface soil samples with a range of bulk soil Pb concentrations were obtained near five industrial facilities and along roadsides and were resuspended in a specially designed laboratory chamber. ...

Thomas M Young; Deo A. Heeraman; Gorkem Sirin; Lowell L. Ashbaugh

2002-05-04T23:59:59.000Z

208

Control of Airborne Wind Energy Systems Based on Nonlinear Model Predictive Control & Moving Horizon Estimation  

E-Print Network [OSTI]

tethered to the ground at a high velocity across the wind direction. Power can be generated by a, the first option is considered. Because it involves a much lighter structure, a major advantage of powerControl of Airborne Wind Energy Systems Based on Nonlinear Model Predictive Control & Moving

209

IEEE TRANSACTIONS ON CONTROL SYSTEMS TECHNOLOGY 1 Airborne Wind Energy Based on Dual Airfoils  

E-Print Network [OSTI]

airfoil systems, but they are less advantageous at very large scales. Index Terms--Airborne wind energy Wind Energy (AWE) paradigm proposes to eliminate the structural elements not directly involved in power Wind Energy [17]. Crosswind flight extracts power from the airflow by flying an airfoil tethered

210

Estimation and Mapping of Hurricane Turbulent Energy Using Airborne Doppler Measurements  

Science Journals Connector (OSTI)

Hurricane turbulent kinetic energy (TKE) was computed using airborne Doppler measurements from the NOAA WP-3D tail radars, and TKE data were retrieved for a variety of storms at different stages of their life cycle. The geometry of the radar ...

Sylvie Lorsolo; Jun A. Zhang; Frank Marks Jr.; John Gamache

2010-09-01T23:59:59.000Z

211

Determination of Airborne Fission Product Radioactivity using Gamma-Ray Spectrometry  

Science Journals Connector (OSTI)

... portion thereof by means of an end-window Geiger-Miiller counter or other suitable detector. Radon and thoron along with their radioactive daughter products are universally present in surface air in ... determine airborne fission product radioactivity it is necessary to differentiate it from that arising from radon and thoron daughters. The concentration of ...

P. F. GUSTAFSON; S. S. BRAR; U. C. MISHRA

1962-08-11T23:59:59.000Z

212

Economic Sources and Spatial Distribution of Airborne Chromium Risks in the U.S.  

Science Journals Connector (OSTI)

Economic Sources and Spatial Distribution of Airborne Chromium Risks in the U.S. ... Electric power utilities emit Cr(VI) during combustion of chromium-containing fossil fuels, such as coal and oil (22). ... Modern technology, together with an advanced economy, can provide a good or service in myriad ways, giving us choices on what to produce and how to produce it. ...

Amanda P. Rehr; Mitchell J. Small; H. Scott Matthews; Chris T. Hendrickson

2010-02-19T23:59:59.000Z

213

EXTENSION OF AN AUTOMATIC BUILDING EXTRACTION TECHNIQUE TO AIRBORNE LASER SCANNER DATA CONTAINING DAMAGED BUILDINGS  

E-Print Network [OSTI]

EXTENSION OF AN AUTOMATIC BUILDING EXTRACTION TECHNIQUE TO AIRBORNE LASER SCANNER DATA CONTAINING DAMAGED BUILDINGS F. Tarsha-Kurdi a , M. Rehor b , T. Landes a , P. Grussenmeyer a , H.-P. Bähr b-peter.baehr)@ipf.uni-karlsruhe.de KEY WORDS: Laser scanning, LIDAR, Point Cloud, DSM, Segmentation, Extraction, Building, Disaster

Paris-Sud XI, Université de

214

Modeling & Simulation  

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

Modeling & Simulation Modeling & Simulation Research into alternative forms of energy, especially energy security, is one of the major national security imperatives of this...

215

Nanoscale Imaging of Airborne Particles Mike Bogan Stanford PULSE Institute, SLAC National Accelerator Laboratory, 2575 Sand Hill Road,  

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

Diagnostics with an X-ray Laser? Lessons from the First Diagnostics with an X-ray Laser? Lessons from the First Nanoscale Imaging of Airborne Particles Mike Bogan Stanford PULSE Institute, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA 94025, USA What does airborne particulate matter look like? How do we develop quantitative descriptors for particles of complex morphology? These challenges were highlighted in the NIST workshop report "Aerosol Metrology Needs for Climate Science" (Dec, 2011). Sure, we can capture aerosol particles on surfaces - removing them from their airborne state - and probe them with high resolution optical and chemical imaging tools, but what information do we lose about the airborne particles? How can we follow dynamics? In this talk we will explore these very basic questions and their importance to combustion

216

Fuzzy logic approach to supervised segmentation of forest regions infested by Southern Pine Beetle using color airborne images  

E-Print Network [OSTI]

Digital image processing technique and fuzzy logic approach are used to identify forest areas infested with Southern Pine Beetle, SPB, using normal color airborne imageries in this research. This research will be used as a front end of a larger...

Ng, Kit-Tong

1994-01-01T23:59:59.000Z

217

Analysis of airborne visible-infrared imaging spectrometer (AVIRIS) data of the Iron Hill, Colorado, carbonatite-alkalic igneous complex  

Science Journals Connector (OSTI)

...obtained in the SAM analysis... airborne methods algorithms alkalic composition ash-flow tuff AVIRIS calibration carbonatites Cimmaron Fault Colorado faults geophysical methods hydrothermal alteration igneous rocks infrared methods intrusions Iron Hill Complex...

Lawrence C. Rowan; Timothy L. Bowers; James K. Crowley; Carmen Anton-Pacheco; Pablo Gumiel; Marguerite J. Kingston

218

An investigation of sea surface temperature patterns in the Gulf of Mexico as determined by an airborne infrared sensor  

E-Print Network [OSTI]

radiation from the sea surface may be used to delineate reliable horizontal patterns of surface temperature. The airborne data nave revealed horizontal temperature changes of 1. 5C to 4. 0C across the boundary of the major current systems in the Gulf... Surface Temperature. . . . Radiation Characteristics of the Sea Surface. . . Atmospheric Attenuation and Emission of Long-Nave Radiation. III. INSTRPilEK'TATION AND AIRBORNE PLATFORvh . 16 General Radiometer 16 16 Aircraft and Navigational System...

Drennan, Kirby Lee

2012-06-07T23:59:59.000Z

219

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

Science Journals Connector (OSTI)

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

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

2008-01-01T23:59:59.000Z

220

"Airborne Wind Energy - Harnessing a Vast, Untapped Renewable Energy  

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

November 14, 2012, 4:15pm November 14, 2012, 4:15pm Colloquia MBG Auditorium "Airborne Wind Energy - Harnessing a Vast, Untapped Renewable Energy Source" Dr. Kenneth Jensen Makani Power Inc. At just 500 m above the ground, the average power density of the wind is double that at 100 m where wind turbines typically reside. This makes high-altitude wind one of the most concentrated forms of renewable energy after hydro-power. Building conventional wind turbines at this height is uneconomical, which begs the question: how do we harness this concentrated and completely untapped resource? Makani Power is developing a novel airborne wind turbine (AWT), which consists of a turbine-carrying aircraft that is tethered to the ground. Propelled by the wind, the AWT travels in a circular path (similar to the

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

INSIGHTS FROM LABORATORY AND AIRBORNE BRDF MEASUREMENTS FOR SATELLITE REMOTE SENSING  

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

Aerosols and Aerosols and Surface Optical Properties from Airborne Spectral Measurements of Directional Reflectance C.K.Gatebe 1,2 & M.D. King, 2,3 Collaborators: O. Dubovik, 4 A.Sinyuk, 2,5 P. Russell, 6 J. Redemann 6 Acknowledgements: G.T. Arnold (SSAI & GSFC) Gala Wind (SSAI & GSFC) Rajesh Poudyal (SSAI & GSFC) Hal Maring & Andy Roberts (NASA HQ) 1 University of Maryland, Baltimore County 2 NASA Goddard Space Flight Center 3 University of Colorado 4 Laboratoire d'Optique Atmosphérique 5 Science Systems and Applications Inc. 6 NASA Ames Research Center Background: CAR Airborne Platforms 1998-2008 NASA P-3B Convair CV-580 Aerocommander 690A Jetstream-31 AATS SSFR/BBR SSFR CAR The NASA P-3B 2008 BBR CAR Time CAR Quicklook Image 2008 http://car.gsfc.nasa.gov/data/ BRDF Measurements

222

A model for forming airborne synthetic aperture radar images of underground targets  

SciTech Connect (OSTI)

Synthetic Aperture Radar (SAR) from an airborne platform has been proposed for imaging targets beneath the earth`s surface. The propagation of the radar`s energy within the ground, however, is much different than in the earth`s atmosphere. The result is signal refraction, echo delay, propagation losses, dispersion, and volumetric scattering. These all combine to make SAR image formation from an airborne platform much more challenging than a surface imaging counterpart. This report treats the ground as a lossy dispersive half-space, and presents a model for the radar echo based on measurable parameters. The model is then used to explore various imaging schemes, and image properties. Dynamic range is discussed, as is the impact of loss on dynamic range. Modified window functions are proposed to mitigate effects of sidelobes of shallow targets overwhelming deeper targets.

Doerry, A.W.

1994-01-01T23:59:59.000Z

223

Device and method for accurately measuring concentrations of airborne transuranic isotopes  

DOE Patents [OSTI]

An alpha continuous air monitor (CAM) with two silicon alpha detectors and three sample collection filters is described. This alpha CAM design provides continuous sampling and also measures the cumulative transuranic (TRU), i.e., plutonium and americium, activity on the filter, and thus provides a more accurate measurement of airborne TRU concentrations than can be accomplished using a single fixed sample collection filter and a single silicon alpha detector.

McIsaac, Charles V. (Idaho Falls, ID); Killian, E. Wayne (Idaho Falls, ID); Grafwallner, Ervin G. (Arco, ID); Kynaston, Ronnie L. (Blackfoot, ID); Johnson, Larry O. (Pocatello, ID); Randolph, Peter D. (Idaho Falls, ID)

1996-01-01T23:59:59.000Z

224

Geophex Airborne Unmanned Survey System (GAUSS). Topical report, October 1993--March 1995  

SciTech Connect (OSTI)

The objectives of the project are to construct a geophysical sensor system based on a remotely operated model helicopter (ROH) and to evaluate the efficacy of the system for characterization of hazardous environmental sites. Geophex Airborne Unmanned Survey System (GAUSS) is a geophysical survey system that uses a ROH as the survey vehicle. We have selected the ROH because of its advantages over fixed wing and ground based vehicles. Lower air speed and superior maneuverability of the ROH make it better suited for geophysical surveys than a fixed wing model aircraft. The ROH can fly close to the ground, allowing detection of weak or subtle anomalies. Unlike ground based vehicles, the ROH can traverse difficult terrain while providing a stable sensor platform. ROH does not touch the ground during the course of a survey and is capable of functioning over water and surf zones. The ROH has been successfully used in the motion picture industry and by geology companies for payload bearing applications. The only constraint to use of the airborne system is that the ROH must remain visible to the pilot. Obstructed areas within a site can be characterized by relocating the base station to alternate positions. GAUSS consists of a ROH with radio controller, a data acquisition and processing (DAP) system, and lightweight digital sensor systems. The objective of our Phase I research was to develop a DAP and sensors suitable for ROH operation. We have constructed these subsystems and integrated them to produce an automated, hand-held geophysical surveying system, referred to as the ``pre-prototype``. We have performed test surveys with the pre-prototype to determine the functionality of the and DAP and sensor subsystems and their suitability for airborne application. The objective of the Phase II effort will be to modify the existing subsystems and integrate them into an airborne prototype. Efficacy of the prototype for geophysical survey of hazardous sites will then be determined.

NONE

1995-03-01T23:59:59.000Z

225

Variations in mass concentrations of airborne particulate matter over tropical urban environment  

Science Journals Connector (OSTI)

Particulate matter (PM) is an important component of the air pollution that has adverse health effects, ecosystem damage and degraded visibility. We analysed the seasonal variations in PM loading from ground-based measurements of PM1.0 and PM2.5, Aerosol Optical Depth (AOD) Black Carbon (BC) aerosol over Hyderabad, India during January-June, 2006. The PM concentrations showed relatively higher values during winter period and lower values during summer. PM1.0 values showed positive correlation with BC, OMI-AI, MODIS-AOD and ground measured AOD. The seasonal variations in PM1.0 were attributed to vehicular traffic patterns, biomass burning and dust aerosols over the region.

K.V.S. Badarinath; Shailesh Kumar Kharol; V. Krishna Prasad; K. Madhavi Latha; Anu Rani Sharma; E.U.B. Reddy

2010-01-01T23:59:59.000Z

226

Simulation Tools  

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

Building simulation tool screen capture Building simulation tool screen capture Simulation Tools Researchers develop whole-building energy simulation software programs that allow architects and building engineers to design or retrofit buildings for maximum energy efficiency and occupant comfort. Programs developed by researchers include: the EnergyPlus whole building simulation program, the Modelica Buildings library for rapid prototyping and controls design, the Building Controls Virtual Test Bed for co-simulation and for model-based operation, and the GenOpt generic optimization program. Contacts Philip Haves PHaves@lbl.gov (510) 486-6512 Michael Wetter MWetter@lbl.gov (510) 486-6990 Links Simulation Research Group Batteries and Fuel Cells Buildings Energy Efficiency Applications Commercial Buildings

227

Distributed Simulation and Simulation Practice  

Science Journals Connector (OSTI)

The possibilities of distributed simulation have been discussed for well over a decade, yet there is only limited evidence of its implementation, particularly within industry. The reasons for this are discussed by identifying the potential applications ... Keywords: Distributed simulation, complexity, innovation, simulation practice

Stewart Robinson

2005-01-01T23:59:59.000Z

228

Simultaneous Sampling of Indoor and Outdoor Airborne Radioactivity after the Fukushima Daiichi Nuclear Power Plant Accident  

Science Journals Connector (OSTI)

Simultaneous Sampling of Indoor and Outdoor Airborne Radioactivity after the Fukushima Daiichi Nuclear Power Plant Accident ... Large amts. of radioactive substances were released into the environment from the Fukushima Dai-ichi Nuclear Power Plants in eastern Japan as a consequence of the great earthquake (M 9.0) and tsunami of 11 March 2011. ... Proceedings of the International Symposium on Environmental Monitoring and Dose Estimation of Residents after Accident of TEPCO’s Fukushima Daiichi Nuclear Power Station; Shiran Hall, Kyoto, Japan, Dec 14, 2012; http://www.rri.kyoto-u.ac.jp/anzen_kiban/outcome/. ...

Tetsuo Ishikawa; Atsuyuki Sorimachi; Hideki Arae; Sarata Kumar Sahoo; Miroslaw Janik; Masahiro Hosoda; Shinji Tokonami

2014-01-22T23:59:59.000Z

229

Nature of airborne particulates at tropic exposure sites. Final report, November 1982-September 1984  

SciTech Connect (OSTI)

Airborne particulates were collected at five exposure sites in Panama using cascade impactor air samplers. Scanning electron microscopy, energy dispersive x-ray analysis, and culture identification techniques were used to analyze the particulates. Analysis revealed that the particulates consist of silicates, chlorides, and sulfur-rich and phosphorus-rich particles. Atmospheric particle levels were higher in the dry season than in the rainy season, and the predominant fungal species varied at each exposure site. The open direct exposure of culture plates served as a simple, appropriate method for monitoring atmospheric fungal spores.

Chen, F.; Dement, W.A.

1984-09-01T23:59:59.000Z

230

Advances in National Capabilities for Consequence Assessment Modeling of Airborne Hazards  

SciTech Connect (OSTI)

This paper describes ongoing advancement of airborne hazard modeling capabilities in support of multiple agencies through the National Atmospheric Release Advisory Center (NARAC) and the Interagency Atmospheric Modeling and Atmospheric Assessment Center (IMAAC). A suite of software tools developed by Lawrence Livermore National Laboratory (LLNL) and collaborating organizations includes simple stand-alone, local-scale plume modeling tools for end user's computers, Web- and Internet-based software to access advanced 3-D flow and atmospheric dispersion modeling tools and expert analysis from the national center at LLNL, and state-of-the-science high-resolution urban models and event reconstruction capabilities.

Nasstrom, J; Sugiyama, G; Foster, K; Larsen, S; Kosovic, B; Eme, B; Walker, H; Goldstein, P; Lundquist, J; Pobanz, B; Fulton, J

2007-11-26T23:59:59.000Z

231

Quantum Simulation  

E-Print Network [OSTI]

Simulating quantum mechanics is known to be a difficult computational problem, especially when dealing with large systems. However, this difficulty may be overcome by using some controllable quantum system to study another less controllable or accessible quantum system, i.e., quantum simulation. Quantum simulation promises to have applications in the study of many problems in, e.g., condensed-matter physics, high-energy physics, atomic physics, quantum chemistry and cosmology. Quantum simulation could be implemented using quantum computers, but also with simpler, analog devices that would require less control, and therefore, would be easier to construct. A number of quantum systems such as neutral atoms, ions, polar molecules, electrons in semiconductors, superconducting circuits, nuclear spins and photons have been proposed as quantum simulators. This review outlines the main theoretical and experimental aspects of quantum simulation and emphasizes some of the challenges and promises of this fast-growing field.

I. M. Georgescu; S. Ashhab; Franco Nori

2014-03-13T23:59:59.000Z

232

Airborne release fractions/rates and respirable fractions for nonreactor nuclear facilities. Volume 1, Analysis of experimental data  

SciTech Connect (OSTI)

This handbook contains (1) a systematic compilation of airborne release and respirable fraction experimental data for nonreactor nuclear facilities, (2) assessments of the data, and (3) values derived from assessing the data that may be used in safety analyses when the data are applicable. To assist in consistent and effective use of this information, the handbook provides: identification of a consequence determination methodology in which the information can be used; discussion of the applicability of the information and its general technical limits; identification of specific accident phenomena of interest for which the information is applicable; and examples of use of the consequence determination methodology and airborne release and respirable fraction information.

Not Available

1994-12-01T23:59:59.000Z

233

Simulation and Risk Assessment Archived Projects  

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

Archived Projects Archived Projects Advanced Analytical Instrumentation and Facilities for In Situ Reaction Studies NETL 6/2002 Mercury and Air Toxic Element Impacts of Coal Combustion By- Product Disposal and Utilization University of North Dakota Energy and Environmental Research Center 1/23/2003 Risk Assessment for Long-Term Storage of CO 2 in Geologic Formations NETL 3/2005 Geology and Reservoirs Simulation for Brine Field NETL 6/27/2005 Mercury Speciation in Coal-Fired Power Plant Flue Gas - Experimental Studies and Model Development University of Pittsburgh 7/6/2005 Airborne Particulate Threat Assessment ChemImage Biothreat LLC 9/29/2005 Assessments of Environmental Impacts and Beneficial Use of Coalbed Methane Produced Water in the Powder River Basin Western Research Institute 1/1/2006

234

Impact of Airborne Doppler Radar Data Assimilation on the Numerical Simulation of Intensity Changes of Hurricane Dennis near a Landfall  

E-Print Network [OSTI]

of Utah, Salt Lake City, Utah JUANZHEN SUN National Center for Atmospheric Research, Boulder, Colorado, devastate coastal regions, and cause floods and erosion inland through torrential rainfall, high winds

Pu, Zhaoxia

235

Evaluation of annual forest disturbance monitoring using a static decision tree approach and 250 m MODIS data  

Science Journals Connector (OSTI)

Research on change detected has largely focused on method development and evaluation in a temporally dependent manner where training and validation data are from the same temporal period. Monitoring over several change periods needs to account for increased variability resulting from possible combinations of atmosphere, sensor, and surface conditions. Training a change method for each monitoring period (i.e. a dynamic approach) is an option, but can be costly to develop the needed training datasets and may not be warranted if sufficient accuracy can be obtained without retraining (i.e. a static approach). In this research the potential of change detection using a static approach suitable for near-real time annual monitoring was evaluated. The research assessed the influence of feature set size, radiometric normalization, incorporation of temporal information, and change object size and sub-pixel fraction on accuracy. The static approach was based on a decision tree developed using 250 m MODIS data from 2005 to 2006 and applied annually for the period 2001–2005. Change results between years were combined and compared to reference data representing change from 2001 to 2005 to evaluate monitoring performance. Results revealed high accuracy for the decision tree change model development from 2005 to 2006 (bootstrap cross-validation KAPPA = 0.91), with lower accuracy (KAPPA = 0.80) when applied for monitoring from 2001 to 2005. Radiometric normalization increased monitoring accuracy (KAPPA = 0.86). Further improvement was achieved with the incorporation of temporal contextual tests to combine the 2001–2005 inter-annual change maps (KAPPA = 0.90), but required a time lag of 1 year. An alternative temporal test that was not restricted by the 1 year time lag produced slightly lower accuracy (KAPPA = 0.88). Evaluation of the effect of object size on detection accuracy showed that accuracy for objects less than 7 pixels was strongly related to object size, with objects less than 3 pixels having low detection rates. The effect of sub-pixel change fraction was found to be dependent on object size with larger objects reducing detection error across the range of fractions evaluated.

Darren Pouliot; Rasim Latifovic; Richard Fernandes; Ian Olthof

2009-01-01T23:59:59.000Z

236

A comparison of cloud top heights computed from airborne lidar and MAS radiance data using CO2 slicing  

E-Print Network [OSTI]

A comparison of cloud top heights computed from airborne lidar and MAS radiance data using CO2 in assessing the accuracy of the CO2-slicing cloud height algorithm. Infrared measurements of upwelling which included various single- layer and multilayer cloud conditions. Overall, the CO2-slicing method

Sheridan, Jennifer

237

Detecting Moving Objects in Airborne Forward Looking InfraRed Sequences Alexander Strehl and J. K. Aggarwal \\Lambda  

E-Print Network [OSTI]

looking infra­red (FLIR) image sequences taken from an airborne, moving platform. Ego­motion effects classification system. 1 Introduction 1.1 Motivation Forward looking infra­red (FLIR) images are frequently used static FLIR images. A comprehensive recent review by Ratches, Wal­ \\Lambda This research was supported

Strehl, Alexander

238

Detecting Moving Objects in Airborne Forward Looking Infra-Red Sequences Alexander Strehl and J. K. Aggarwal  

E-Print Network [OSTI]

-red (FLIR) image sequences taken from an airborne, moving platform. Ego-motion effects are removed through system. 1 Introduction 1.1 Motivation Forward looking infra-red (FLIR) images are frequently used static FLIR images. A comprehensive recent review by Ratches, Wal- £ This research was supported in part

Strehl, Alexander

239

Snow growth and transport patterns in orographic storms as estimated from airborne vertical-plane dual-Doppler radar data  

Science Journals Connector (OSTI)

Airborne vertical-plane dual-Doppler cloud radar data, collected on wind-parallel flight legs over a mountain in Wyoming in 16 winter storms, are used to analyze the growth, transport, and sedimentation of snow. In all storms the wind is rather ...

Bart Geerts; Yang Yang; Roy Rasmussen; Samuel Haimov; Binod Pokharel

240

Ambient Airborne Solids Concentrations Including Volcanic Ash at Hanford, Washington Sampling Sites Subsequent to the Mount St. Helens Eruption  

SciTech Connect (OSTI)

A major eruption of Mount St. Helens occurred on May 18, 1980. Subsequently, airborne solid concentrations were measured as a function of time at two sites within the southern edge of the fallout plume about 211 km east of Mount St. Helens. This ash was a source for investigating area-wide resuspension. Rain had a variable effect on decreasing airborne concentrations from resuspension. From 0.5 to 1.5 cm of rain were required to significantly reduce airborne solid concentrations through July. For a more aged resuspension source in September, a rain of 2.0 cm had a negligible effect. A monthly average threshold-wind speed for resuspension was defined as 3.6 m/s. For monthly-average wind speeds less than the threshold wind speed, monthly-average airborne concentrations tended to decrease with time. A decrease was recorded between September and October. For this 4-month time period, the half-life was on the order of 50 days, corresponding to a weathering rate of 5.1 year/sup -1/.

Sehmel, G.A.

1982-12-20T23:59:59.000Z

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241

Call for Student Demos and Posters on Unmanned Aerial Systems AIAA workshop on "Airborne Networks and Communications"  

E-Print Network [OSTI]

Call for Student Demos and Posters on Unmanned Aerial Systems AIAA workshop on "Airborne Networks, this workshop will also include a session on student posters and demonstrations of unmanned aerial vehicles. Undergraduate and graduate students whose posters and demos are selected for presentation will be provided

Namuduri, Kamesh

242

Characterization of Airborne Molds, Endotoxins, and Glucans in Homes in New Orleans after Hurricanes Katrina and Rita  

Science Journals Connector (OSTI)

...Airborne Molds, Endotoxins, and Glucans in Homes in New Orleans after Hurricanes Katrina...leading to extraordinary mold growth in homes. To characterize the potential risks of...molds and bacteria in New Orleans area homes. In October 2005, we collected air samples...

Carol Y. Rao; Margaret A. Riggs; Ginger L. Chew; Michael L. Muilenberg; Peter S. Thorne; David Van Sickle; Kevin H. Dunn; Clive Brown

2007-01-05T23:59:59.000Z

243

Airborne Release Fractions/Rates and Respirable Fractions for Nonreactor Nuclear Facilities, Volume II  

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

TS NOT MEASUREMENT SENSITIVE DOE-HDBK-3010-94 December 1994 Reaffirmed 2013 DOE HANDBOOK AIRBORNE RELEASE FRACTIONS/RATES AND RESPIRABLE FRACTIONS FOR NONREACTOR NUCLEAR FACILITIES Volume II - Appendices U.S. Department of Energy AREA SAFT Washington, D.C. 20585 DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited. This document has been reproduced directly from the best available copy. Available to DOE and DOE contractors from the Office of Scientific and Technical Information, P.O. Box 62, Oak Ridge, TN 37831; (615) 576-8401. Available to the public from the U.S. Department of Commerce, Technology Administration, National Technical Information Service, Springfield, VA 22161; (703) 487-4650. Order No. DE95004711 DOE-HDBK-3010-94

244

An Energy-Aware Airborne Dynamic Data-Driven Application System for Persistent Sampling and Surveillance  

Science Journals Connector (OSTI)

Abstract This paper describes an energy-aware, airborne, dynamic data-driven application systems for persistent sensing in complex atmospheric conditions. The work combines i.) new onboard and remote real-time, wind sensing capabilities; ii.) online models for planning based on Gaussian processes for onboard data and dynamic atmospheric models that assimilate Doppler radar data; and iii.) a hierarchical guidance and control framework with algorithms that can adapt to environmental, sensing, and computational resources. The novel aspects of this work include real-time synthesis of multiple Doppler radar data into wind field measurements; creation of atmospheric models for online planning that can be run inside guidance loops; guidance algorithms based on stochastic dynamic programming and ordered upwind methods that can adapt planning horizons, cost function approximations, and mesh representations of the environment; and throttling algorithms that manage the adaptation of the models and guidance algorithms in response to computational resources.

Eric W. Frew; Brian Argrow; Adam Houston; Chris Weiss; Jack Elston

2013-01-01T23:59:59.000Z

245

Evidence of Airborne Transmission of the Severe Acute Respiratory Syndrome Virus  

Science Journals Connector (OSTI)

...rates through doorways and windows (closed and open) were assumed to be dependent on differences in air pressure. Differences in air temperature and winds, as well as the exhaust from fans, could introduce driving pressures. We used the software program MIX, which was developed by Li et al. to model the... This analysis used detailed airflow-dynamics studies to model the possible airborne spread of the virus in the large outbreak of the severe acute respiratory syndrome (SARS) in the Amoy Gardens housing complex in Hong Kong. The spatial distribution of the cases supports the hypothesis that a single index patient was the source of infection and the infection was spread by virus-laden aerosols.

Yu I.T.S.; Li Y.; Wong T.W.

2004-04-22T23:59:59.000Z

246

Airborne Release Fractions/Rates and Respirable Fractions for Nonreactor Nuclear Facilities, Volume 1  

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

TS NOT MEASUREMENT SENSITIVE DOE-HDBK-3010-94 December 1994 Reaffirmed 2013 DOE HANDBOOK AIRBORNE RELEASE FRACTIONS/RATES AND RESPIRABLE FRACTIONS FOR NONREACTOR NUCLEAR FACILITIES Volume I - Analysis of Experimental Data U.S. Department of Energy AREA SAFT Washington, D.C. 20585 DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited. This document has been reproduced directly from the best available copy. Available to DOE and DOE contractors from the Office of Scientific and Technical Information, P.O. Box 62, Oak Ridge, TN 37831; (615) 576-8401. Available to the public from the U.S. Department of Commerce, Technology Administration, National Technical Information Service, Springfield, VA 22161; (703) 487-4650.

247

Occupational exposures of airborne trichloramine at indoor swimming pools in Taipei  

Science Journals Connector (OSTI)

Abstract Ten indoor swimming pools in Taipei, Taiwan were included in the study to assess the exposure of people to airborne trichloramine (NCl3) and also to discover the factors that might affect the associated concentrations. An active air sampling method was performed to determine the levels of NCl3, while questionnaires were administered to swimming pool workers, including lifeguards, swimming instructors, and management employees. The results show that the concentrations of trichloramine ranged from 0.017 to 0.15 mg m? 3, which were generally lower than what have been reported from other studies. Symptoms of sore throat and phlegm were more frequent among lifeguards and swimming instructors (exposure group) than management employees (reference group) (odds ratios were 11.28 and 4.22 for sore throat and phlegm, respectively). It seems that the current exposure limit for airborne NCl3, which was recommended by WHO, was not lower enough to protect the health of pool attendants. Regulated level of free available chlorine in Taipei (i.e., 0.3–0.7 ppm) is lower than what is required in other countries (e.g., 1–3 ppm in the UK). This might be the main reason why the concentrations of \\{NCl3\\} reported elsewhere were higher than what were found in this research. Further international comparisons will help to elucidate if low free chlorine concentration should be adopted as an operating standard. For the indoor swimming pools in Taipei, the air quality is suggested to be improved, since even with the low concentrations of NCl3, higher respiratory ailments among pool workers were observed.

Tsai-Shu Chu; Shu-Fang Cheng; Gen-Shuh Wang; Shih-Wei Tsai

2013-01-01T23:59:59.000Z

248

Assessing sources of airborne mineral dust and other aerosols, in Iraq  

Science Journals Connector (OSTI)

Most airborne particulate matter in Iraq comes from mineral dust sources. This paper describes the statistics and modeling of chemical results, specifically those from Teflon® filter samples collected at Tikrit, Balad, Taji, Baghdad, Tallil and Al Asad, in Iraq, in 2006/2007. Methodologies applied to the analytical results include calculation of correlation coefficients, Principal Components Analysis (PCA), and Positive Matrix Factorization (PMF) modeling. PCA provided a measure of the covariance within the data set, thereby identifying likely point sources and events. These include airborne mineral dusts of silicate and carbonate minerals, gypsum and salts, as well as anthropogenic sources of metallic fumes, possibly from battery smelting operations, and emissions of leaded gasoline vehicles. Five individual PMF factors (source categories) were modeled, four of which being assigned to components of geological dust, and the fifth to gasoline vehicle emissions together with battery smelting operations. The four modeled geological components, dust-siliceous, dust-calcic, dust-gypsum, and evaporate occur in variable ratios for each site and size fraction (TSP, PM10, and PM2.5), and also vary by season. In general, Tikrit and Taji have the largest and Al Asad the smallest percentages of siliceous dust. In contrast, Al Asad has the largest proportion of gypsum, in part representing the gypsiferous soils in that region. Baghdad has the highest proportions of evaporite in both size fractions, ascribed to the highly salinized agricultural soils, following millennia of irrigation along the Tigris River valley. Although dust storms along the Tigris and Euphrates River valleys originate from distal sources, the mineralogy bears signatures of local soils and air pollutants.

Johann P. Engelbrecht; R.K.M. Jayanty

2013-01-01T23:59:59.000Z

249

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

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

250

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

Science Journals Connector (OSTI)

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

Pascal Sirguey; Renaud Mathieu; Yves Arnaud

2009-01-01T23:59:59.000Z

251

Capability of air filters to retain airborne bacteria and molds in heating, ventilating and air-conditioning (HVAC) systems  

Science Journals Connector (OSTI)

The capability of air filters (filterclass: F6, F7) to retain airborne outdoor microorganisms was examined in field experiments in two heating, ventilating and air conditioning (HVAC) systems. At the beginning of the 15-month investigation period, the first filter stages of both HVAC systems were equipped with new unused air filters. The number of airborne bacteria and molds before and behind the filters were determined simultaneously in 14 days-intervals using 6-stage Andersen cascade impactors. Under relatively dry ( 12 °C) outdoor air conditions air filters led to a marked reduction of airborne microorganism concentrations (bacteria by approximately 70 % and molds by > 80 %). However, during long periods of high relative humidity (> 80 % R. H.) a proliferation of bacteria on air filters with subsequent release into the filtered air occured. These microorganisms were mainly smaller than 1.1 ?m therefore being part of the respirable fraction. The results showed furthermore that one possibility to avoid microbial proliferation is to limit the relative humidity in the area of the air filters to 80 % R. H. (mean of 3 days), e. g. by using preheaters in front of air filters in HVAC-systems.

Martin Möritz; Hans Peters; Bettina Nipko; Hennin Rüden

2001-01-01T23:59:59.000Z

252

Characteristics of airborne coal mine dust and its implication to coal workers' pneumoconiosis  

SciTech Connect (OSTI)

Size selective airborne dust samples were collected using 4-stage cassette impactors at nine different locations in continuous mining sections in each of five coal seams located in the Appalachian bituminous coal field. These coal seams were the Upper Freeport, Pittsburgh, Kittanning, Coalburg, and Pocahontas. Mineralogical analyses were performed by an x-ray powder diffraction photographic technique. The distributions of total and respirable dust concentrations were fit best by a log-normal distribution. The effects of the coal seam and the sampling location on dust levels were significant. The results of the particle size distribution analyses suggest that coal mine dust has a multi-modal distribution. The effects of the coal seam and the sampling locations were significant. The distributions obtained were often affected by such mine-related variables as ventilation rate, relative humidity, and the section dimensions. Nine minerals commonly found in the coal mine dust samples collected from the coal seams studied were illite, calcite, kaolinite, quartz, dolomite, siderite, gypsum, anhydrite, and pyrite in descending order of magnitude. Relative abundance of all mineral species except siderite and gypsum was coal seam specific and suggests that existence of coal seam variability of mineral content. Although mineral content was affected by sampling locations and the sections within a mine, the magnitude was small when compared with that of cal seams. Mineral content also appears to be affected by particle size, although no particular pattern was observed.

Kim, H.

1989-01-01T23:59:59.000Z

253

Alternate particle removal technologies for the Airborne Activity Confinement System at the Savannah River Site  

SciTech Connect (OSTI)

This report presents a review of the filtration technologies available for the removal of particulate material from a gas stream. It was undertaken to identify alternate filtration technologies that may be employed in the Airborne Activity Confinement System (AACS) at the Savannah River Plant. This report is organized into six sections: (1) a discussion of the aerosol source term and its definition, (2) a short discussion of particle and gaseous contaminant removal mechanisms, (3) a brief overview of particle removal technologies, (4) a discussion of the existing AACS and its potential shortcomings, (5) an enumeration of issues to be addressed in upgrading the AACS, and, (6) a detailed discussion of the identified technologies. The purpose of this report is to identity available options to the existing particle removal system. This system is in continuous operation during routine operation of the reactor. As will be seen, there are a number of options and the selection of any technology or combination of technologies will depend on the design aerosol source term (yet to be appropriately defined) as well as the flow requirements and configuration. This report does not select a specific technology. It focuses on particulate removal and qualitatively on the removal of radio-iodine and mist elimination. Candidate technologies have been selected from industrial and nuclear gas cleaning applications.

Brockmann, J.E.; Adkins, C.L.J.; Gelbard, F. [Sandia National Labs., Albuquerque, NM (United States)

1991-09-01T23:59:59.000Z

254

Airborne gamma-ray spectrometer and magnetometer survey: Chico quadrangle, California. Final report  

SciTech Connect (OSTI)

An airborne high sensitivity gamma-ray spectrometer and magnetometer survey was conducted over ten (10) areas over northern California and southwestern Oregon. These include the 2/sup 0/ x 1/sup 0/ NTMS quadrangles of Roseburg, Medford, Weed, Alturas, Redding, Susanville, Ukiah, and Chico along with the 1/sup 0/ x 2/sup 0/ areas of the Coos Bay quadrangle and the Crescent City/Eureka areas combined. This report discusses the results obtained over the Chico, California, map area. Traverse lines were flown in an east-west direction at a line spacing of three. Tie lines were flown north-south approximately twelve miles apart. A total of 16,880.5 line miles of geophysical data were acquired, compiled, and interpreted during the survey, of which 3026.4 line miles are in the quadrangle. The purpose of this study is to acquire and compile geologic and other information with which to assess the magnitude and distribution of uranium resources with which to assess the magnitude and distribution of uranium resources and to determine areas favorable for the occurrence of uranium in the United States.

Not Available

1981-05-01T23:59:59.000Z

255

Building Performance Simulation  

E-Print Network [OSTI]

Y (2008). DeST—An integrated building simulation toolkit,Part ? : Fundamentals. Building Simulation, 1: 95 ? 110.Y (2008). DeST—An integrated building simulation toolkit,

Hong, Tianzhen

2014-01-01T23:59:59.000Z

256

E-Print Network 3.0 - airborne vehicle uav Sample Search Results  

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

for multiple Unmanned Aerial Vehicle (UAV) simulations in order to facilitate rapid... , Petri net, modeling, UAV, control structure 1. Introduction Unmanned Aerial...

257

E-Print Network 3.0 - airborne flux measurements Sample Search...  

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

are threefold: (a) to examine how observed and simulated regional variations in surface heat ... Source: Geerts, Bart - Department of Atmospheric Science, University of Wyoming...

258

Digestion Simulations  

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

Digestion Simulations Digestion Simulations Name: Lisa Location: N/A Country: N/A Date: N/A Question: My 5th grade students are beginning an experiment next week and their hypothesis involves edibility(edibleness?). Is there a way to replicate the stomach in, say, a bottle?? Are there ways to test for edibleness(?) without actually ingesting the experiment yourself? Replies: I would not recommend the idea of a bottle stomach. The stomach digests only proteins anyway with HCl [pH 1.0] which is very, very strong acid that will burn seriously if in contact with skin. The intestine is just as much responsible for digestion of lipids [bile], carbohydrates and remaining proteins using enzymes, many of these you do not want to be handling, let alone purchase. As a high school teacher, I have lab exercises dealing with digestion, but I can not recommend any of these unless you are set up with a functional science laboratory and all the safety equipment necessary.

259

Assessment of Unabated Facility Emission Potentials for Evaluating Airborne Radionuclide Monitoring Requirements at Pacific Northwest National Laboratory - 2007  

SciTech Connect (OSTI)

Assessments were performed to evaluate compliance with the airborne radionuclide emission monitoring requirements in the National Emission Standards for Hazardous Air Pollutants (NESHAP – U.S. Code of Federal Regulations, Title 40, Part 61, Subpart H) and Washington Administrative Code (WAC) 246-247: Radiation Protection – Air Emissions. In these NESHAP assessments, potential unabated offsite doses were evaluated for emission locations at buildings that are part of the consolidated laboratory campus of the Pacific Northwest National Laboratory. This report describes the inventory-based methods and provides the results for the NESHAP assessment performed in 2007.

Ballinger, Marcel Y.; Barfuss, Brad C.; Gervais, Todd L.

2008-01-01T23:59:59.000Z

260

SensorFlock: An Airborne Wireless Sensor Network of Micro-Air 1Jude Allred, 1Ahmad Bilal Hasan, 1Saroch Panichsakul, 2William Pisano,2Peter Gray, 1Jyh Huang,  

E-Print Network [OSTI]

SensorFlock: An Airborne Wireless Sensor Network of Micro-Air Vehicles 1Jude Allred, 1Ahmad Bilal.Pisano}@colorado.edu Abstract An airborne wireless sensor network (WSN) composed of bird-sized micro aerial vehicles (MAVs, and wireless communication networking between MAVs. We present experimental results from flight tests of flocks

Mohseni, Kamran

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

Fast In Situ Airborne Measurement of Ammonia Using a Mid-Infrared Off-Axis ICOS Spectrometer  

SciTech Connect (OSTI)

A new ammonia (NH3) spectrometer was developed based on off-axis integrated cavity output spectroscopy. Its feasibility was demonstrated in airborne test flights in the troposphere on board of the Department of Energy (DOE) Gulfstream-1 (G-1) aircraft. This ammonia gas analyzer consists of an optical cell, a quantum-cascade laser, gas sampling system, electronics for control and data acquisition, and data-analysis software. The NH3 mixing ratio is determined from high-resolution NH3 absorption line shapes by tuning the laser wavelength over the sR(3,K) transition of the fundamental vibration band near 9.67 ?m. Excellent linearity is obtained in a wide range (0- 101 ppb) during calibration. The instrument is capable of collecting data at 2 Hz. Two research flights were conducted over Sunnyside, Washington. In the first test flight, the ammonia gas sensor was used to identify signatures of feedstock from local dairy farms with high vertical spatial resolution under low wind and stable atmospheric conditions. In the second flight, the NH3 spectrometer showed high sensitivity in capturing feedstock emission signals under windy and less stable conditions. Our results demonstrate that this new ammonia spectrometer is airborne feasible and that it has the capability to provide fast in situ observations of ammonia to advance our understanding of atmospheric compositions and aerosol formation.

Leen, Brian; Yu, Xiao-Ying; Gupta, Manish; Baer, Douglas S.; Hubbe, John M.; Kluzek, Celine D.; Tomlinson, Jason M.; Hubbell, Michael R.

2013-09-17T23:59:59.000Z

262

''A far more formidable task'': the 101st Airborne Division's pacification of Thua Thien Province, Republic of Vietnam, 1968-1972  

E-Print Network [OSTI]

This thesis seeks to identify, describe, and analyze the tactics used by the 101st Airborne Division in the pacification of the Republic of Vietnam's Thua Thien province from 1968 to 1972. Despite the larger calamity of the Vietnam War, the 101st...

Werkheiser, Edwin Brooks, II

2006-10-30T23:59:59.000Z

263

Mixed Mode Simulation Tools  

E-Print Network [OSTI]

ANSYS CFX, ANSYS Fluent, Autodesk Simulation CFD (formerly CFDesign), Autodesk Vasari, FloVENT, Flowdesigner,

Gandhi, Priya; Brager, Gail; Dutton, Spencer

2014-01-01T23:59:59.000Z

264

DOE-HDBK-3010-94; Airborne Release Fractions/Rates and Respirable Fractions for Nonreactor Nuclear Facilities, Volume II  

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

3010-94 3010-94 December 1994 DOE HANDBOOK AIRBORNE RELEASE FRACTIONS/RATES AND RESPIRABLE FRACTIONS FOR NONREACTOR NUCLEAR FACILITIES Volume II - Appendices U.S. Department of Energy AREA SAFT Washington, D.C. 20585 DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited. This document has been reproduced directly from the best available copy. Available to DOE and DOE contractors from the Office of Scientific and Technical Information, P.O. Box 62, Oak Ridge, TN 37831; (615) 576-8401. Available to the public from the U.S. Department of Commerce, Technology Administration, National Technical Information Service, Springfield, VA 22161; (703) 487-4650. Order No. DE95004711 DOE-HDBK-3010-94 Page i VOLUME II: APPENDICES APPENDIX A

265

Proposed beryllium metal bounding airborne release fractions (ARFs)/rates (ARRs) and respirable fractions (RFs) for DOE facility accidents analyses  

Science Journals Connector (OSTI)

Beryllium metal has special properties for nuclear applications and is used widely within the Department of Energy (DOE) complex. Beryllium is toxic and has the potential to cause health effects (sensitization and chronic beryllium disease) to workers. Due to the type of processing involving large quantities of beryllium metal and powders and potential for significant airborne release under accident conditions, a comprehensive hazard analysis is required by DOE in a safety analysis document that evaluates potential accidents that can cause beryllium releases to the workplace and public or to the environment. The goal of the safety analysis is to identify and evaluate hazards so that appropriate controls or safeguards can be specified to protect the workers and public from potential accidents. A hazard assessment is also required to comply with 10 CFR Part 850, Chronic Beryllium Disease Prevention Program (1999) to protect the workers. DOE safety analyses include a quantitative estimate of releases and downwind concentrations for purposes of hazard classification and determination of the need for additional hazards analysis, accident analysis, and risk assessments. There are no complex-wide accepted Airborne Release Fractions (ARFs) and Respirable Fractions (RFs) that can be used to evaluate the potential downwind consequences of releases of beryllium under various accident conditions (e.g., spill, fire, stress, explosion, etc.). The purpose is to recommend DOE complex-wide \\{ARFs\\} and \\{RFs\\} that can be used to evaluate the potential downwind consequences of accidents. This paper proposes various values for \\{ARFs\\} and \\{RFs\\} that are based on review of the published information and data on the oxidation and ignition behavior of beryllium metal encased in a thin coat of non-porous, adherent oxide (“blue oxide”); the typical form of this material found in DOE facilities. Information is also presented as a function of the morphology of the metal (i.e., large, coherent, pieces; turnings/swarfs; chips/powder; and dust) because the surface to volume ratio is an important factor in evaluating both the amount of beryllium released and the potential for ignition of the metal that may increase the amount of release significantly. Guidance is also provided for the use of the DOE-HDBK-3010-94, Airborne Release Fractions/Rates and Respirable Fraction for Nonreactor Nuclear Facilities, values for oxide releases that result in a more liberal, allowable limiting airborne concentration for determining consequences and hazard classification of the facility. Detailed explanations of the proposed ARF/RF values for the various beryllium metal forms (large coherent pieces, chips/powder, turning/swarfs from processing, and dust) and other aspects of beryllium are provided in a report by Mishima et al. (April 2005). A short version of this report and a summary of the ARF/RF values are presented here.

Jofu Mishima; Terry L. Foppe; J.C. Laul

2008-01-01T23:59:59.000Z

266

HVAC filtration for controlling infectious airborne disease transmission in indoor environments: Predicting risk reductions and operational costs  

Science Journals Connector (OSTI)

Abstract This work describes and applies a methodology for estimating the impact of recirculating heating, ventilating, and air-conditioning (HVAC) particle filters on the control of size-resolved infectious aerosols in indoor environments using a modified version of the Wells-Riley model for predicting risks of infectious disease transmission. Estimates of risk reductions and associated operational costs of both HVAC filtration and equivalent outdoor air ventilation are modeled and compared using a case study of airborne transmission of influenza in a hypothetical office space. Overall, recirculating HVAC filtration was predicted to achieve risk reductions at lower costs of operation than equivalent levels of outdoor air ventilation, particularly for MERV 13–16 filters. Medium efficiency filtration products (MERV 7–11) are also inexpensive to operate but appear less effective in reducing infectious disease risks.

Parham Azimi; Brent Stephens

2013-01-01T23:59:59.000Z

267

Unmanned airborne vehicle (UAV): Flight testing and evaluation of two-channel E-field very low frequency (VLF) instrument  

SciTech Connect (OSTI)

Using VLF frequencies, transmitted by the Navy`s network, for airborne remote sensing of the earth`s electrical, magnetic characteristics was first considered by the United States Geological Survey (USGS) around the mid 1970s. The first VLF system was designed and developed by the USGS for installation and operation on a single engine, fixed wing aircraft used by the Branch of Geophysics for geophysical surveying. The system consisted of five channels. Two E-field channels with sensors consisting of a fixed vertical loaded dipole antenna with pre-amp mounted on top of the fuselage and a gyro stabilized horizontal loaded dipole antenna with pre-amp mounted on a tail boom. The three channel magnetic sensor consisted of three orthogonal coils mounted on the same gyro stabilized platform as the horizontal E-field antenna. The main features of the VLF receiver were: narrow band-width frequency selection using crystal filters, phase shifters for zeroing out system phase variances, phase-lock loops for generating real and quadrature gates, and synchronous detectors for generating real and quadrature outputs. In the mid 1990s the Branch of Geophysics designed and developed a two-channel E-field ground portable VLF system. The system was built using state-of-the-art circuit components and new concepts in circuit architecture. Small size, light weight, low power, durability, and reliability were key considerations in the design of the instrument. The primary purpose of the instrument was for collecting VLF data during ground surveys over small grid areas. Later the system was modified for installation on a Unmanned Airborne Vehicle (UAV). A series of three field trips were made to Easton, Maryland for testing and evaluating the system performance.

NONE

1998-12-01T23:59:59.000Z

268

Alternate airborne release fraction determination for hazardous waste management storage repository hazard categorization at the Lawrence Livermore National Laboratory  

SciTech Connect (OSTI)

Hazardous Waste Management (HWM) facilities are used in the handling and processing of solid and liquid radioactive, hazardous, mixed, and medical wastes generated at Lawrence Livermore National Laboratory (LLNL). Waste may be treated or stored in one of the HWM facility units prior to shipment off site for treatment or disposal. Planned facilities such as the Decontamination and Waste Treatment Facility (DWTF) and the Building 280 Container Storage Unit are expected to handle similar waste streams. A hazard classification was preformed in each facility safety analysis report (SAR) according to the DOE Standard 1027-92 `Hazard Categorization and Accident Analysis Techniques for Compliance with DOE Order 5480.23, Nuclear Safety Analysis Reports.` The general methodology practiced by HWM to determine alternate airborne release fractions (ARFs) in those SARs was based upon a beyond evaluation basis earthquake accident scenario characterized by the release of the largest amount of respirable, airborne radioactive material. The alternate ARF was calculated using a three-factor formula consisting of the fraction of failed waste containers, fraction of material released from failed waste containers,and the fraction of material entrained to the environment. Recently, in deliberation with DOE-Oakland representatives, HWM decided to modify this methodology. In place of the current detailed analysis, a more straightforward process was proposed based upon material form, credible accident environments, and empirical data. This paper will discuss the methodology and derivation of ARFs specific to HWM treatment and storage facilities that are alternative to those presented in DOE-STD-1027-92.

Brumburgh, G.P.

1998-05-01T23:59:59.000Z

269

Robot Hardware Simulator  

E-Print Network [OSTI]

Robotics Simulator is to perform simulations of many heterogeneous types of robots all working within a single, virtual environment. The main components of this project are Robot Simulator, Environment Control Panel and Environment Simulator. Robot simulator consists of three parts: a robot hardware simulator, a robot control program, which will be user supplied, and an environment-based robot object. Robot control program can work with various robot hardware simulators via standard API. The robot hardware simulator will interface to the environment via requests for data from its sensor or requests for action from its actuators. The environment-based robots will be responsible for controlling the individual sensors, based on robot hardware simulator requests, and providing the appropriate data to the sensors, Environment control panel will be a standalone system that connects to the environment simulator to monitor and control the current simulation The environment simulator is the central component in the system. The environment simulator is responsible for keeping track of the actual state of the environment, including each robot. The environment simulator receives requests from simulated robots to read sensors, initiate actuators, and to send and receive communication.

unknown authors

270

Aerosol generation and entrainment model for cough simulations.  

E-Print Network [OSTI]

??The airborne transmission of diseases is of great concern to the public health community. The possible spread of infectious disease by aerosols is of particular… (more)

Ersahin, Cem.

2007-01-01T23:59:59.000Z

271

Dynamic Positioning Simulator Dynamic Positioning Simulator  

E-Print Network [OSTI]

Simulator 5 / 24 #12;Dynamic Positioning Simulator Dynamic Positioning Why Dynamic Positioning? Advantages Dynamic Positioning: No tugboats needed; Offshore set-up is quick; Power saving; Precision situations more on Ship: Wind Force Fw = 1 2 air V 2 rw CXw (rw )AT 1 2 air V 2 rw CYw (rw )AL Mw = 1 2 air V 2 rw CMw (rw

Vuik, Kees

272

DOE-HDBK-3010-94; DOE Handbook Airborne Release Fractions/Rates and Respirable Fractions for Nonreactor Nuclear Facilities, Volume 1  

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

10-94 10-94 December 1994 CHANGE NOTICE NO. 1 March 2000 DOE HANDBOOK AIRBORNE RELEASE FRACTIONS/RATES AND RESPIRABLE FRACTIONS FOR NONREACTOR NUCLEAR FACILITIES Volume I - Analysis of Experimental Data U.S. Department of Energy AREA SAFT Washington, D.C. 20585 DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited. This document has been reproduced from the best available copy. Available to DOE and DOE contractors from ES&H Technical Information Services, U.S. Department of Energy, (800) 473-4375, fax: (301) 903-9823. Available to the public from the U.S. Department of Commerce, Technology Administration, National Technical Information Service, Springfield, VA 22161; (703) 605-6000. Change Notice No. 1 DOE-HDBK-3010-94 March 2000 Airborne Release Fractions/Rates and Respirable Fractions

273

Estimated airborne release of plutonium from the Exxon Nuclear Mixed Oxide Fuel Plant at Richland, Washington as a result of postulated damage from severe wind and earthquake hazard  

SciTech Connect (OSTI)

The potential airborne releases of plutonium from postulated damage sustained by the Exxon Nuclear Company's Mixed Oxide Fabrication Plant at Richland, Washington, as a result of various levels of wind and earthquake hazard, are estimated. The releases are based on damage scenarios that range up to 250 mph for wind hazard and in excess of 1.0 g ground acceleration for seismic hazard, which were developed by other specialists. The approaches and factors used to estimate the releases (inventories of dispersible materials at risk, damage levels and ratios, fractional airborne releases of dispersible materials under stress, atmosphere exchange rates, and source term ranges) are discussed. Release estimates range from less than 10/sup -7/ g to greater than 14 g of plutonium over a four-day period.

Mishima, J.; Schwendiman, L.C.; Ayer, J.E.; Owzarski, E.L.

1980-02-01T23:59:59.000Z

274

MODIS Land Products Subsets Demo  

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

275

Twenty-First-Century Compatible CO2 Emissions and Airborne Fraction Simulated by CMIP5 Earth System Models under Four Representative Concentration Pathways  

Science Journals Connector (OSTI)

The carbon cycle is a crucial Earth system component affecting climate and atmospheric composition. The response of natural carbon uptake to CO2 and climate change will determine anthropogenic emissions compatible with a target CO2 pathway. For ...

Chris Jones; Eddy Robertson; Vivek Arora; Pierre Friedlingstein; Elena Shevliakova; Laurent Bopp; Victor Brovkin; Tomohiro Hajima; Etsushi Kato; Michio Kawamiya; Spencer Liddicoat; Keith Lindsay; Christian H. Reick; Caroline Roelandt; Joachim Segschneider; Jerry Tjiputra

2013-07-01T23:59:59.000Z

276

Evaluation of airborne geophysical surveys for large-scale mapping of contaminated mine pools: draft final report  

SciTech Connect (OSTI)

Decades of underground coal mining has left about 5,000 square miles of abandoned mine workings that are rapidly filling with water. The water quality of mine pools is often poor; environmental regulatory agencies are concerned because water from mine pools could contaminate diminishing surface and groundwater supplies. Mine pools are also a threat to the safety of current mining operations. Conversely, mine pools are a large, untapped water resource that, with treatment, could be used for a variety of industrial purposes. Others have proposed using mine pools in conjunction with heat pumps as a source of heating and cooling for large industrial facilities. The management or use of mine pool water requires accurate maps of mine pools. West Virginia University has predicted the likely location and volume of mine pools in the Pittsburgh Coalbed using existing mine maps, structure contour maps, and measured mine pool elevations. Unfortunately, mine maps only reflect conditions at the time of mining, are not available for all mines, and do not always denote the maximum extent of mining. Since 1999, the National Energy Technology Laboratory (NETL) has been evaluating helicopter-borne, electromagnetic sensing technologies for the detection and mapping of mine pools. Frequency domain electromagnetic sensors are able to detect shallow mine pools (depth < 50 m) if there is sufficient contrast between the conductance of the mine pool and the conductance of the overburden. The mine pools (conductors) most confidently detected by this technology are overlain by thick, resistive sandstone layers. In 2003, a helicopter time domain electromagnetic sensor was applied to mined areas in southwestern Virginia in an attempt to increase the depth of mine pool detection. This study failed because the mine pool targets were thin and not very conductive. Also, large areas of the surveys were degraded or made unusable by excessive amounts of cultural electromagnetic noise that obscured the subtle mine pool anomalies. However, post-survey modeling suggested that thicker, more conductive mine pools might be detected at a more suitable location. The current study sought to identify the best time domain electromagnetic sensor for detecting mine pools and to test it in an area where the mine pools are thicker and more conductive that those in southwestern Virginia. After a careful comparison of all airborne time domain electromagnetic sensors (including both helicopter and fixed-wing systems), the SkyTEM system from Denmark was determined to be the best technology for this application. Whereas most airborne time domain electromagnetic systems were developed to find large, deep, highly conductive mineral deposits, the SkyTEM system is designed for groundwater exploration studies, an application similar to mine pool detection.

Geosciences Division, National Energy Technology Laboratory, US Department of Energy, Pittsburgh, PA; Hammack, R.W.

2006-12-28T23:59:59.000Z

277

LOFT Engineering Simulator  

SciTech Connect (OSTI)

The LOFT Engineering Simulator represents an attempt to develop a simulation with sufficient physical detail (solution of the conservation equations) for moderate accident simulation, but which will still run in real time and provide an interface for the operator to interact with the model. The LOFT Engineering Simulator is presently being used to assist the Augmented Operator Capability (AOC) Program. Part of the AOC program has developed techniques to support the Human Engineering Research for evaluating graphics displays in a nuclear reactor control room. The LOFT Engineering Simulator offers: (1) a unique means of supplying plant equivalent simulation data to drive the various graphics dislays under consideration; and (2) a technique to test and evaluate control strategy. This report describes the hardware and software used for the LOFT Engineering Simulator, including the graphics display computer.

Venhuizen, J.R.

1981-09-01T23:59:59.000Z

278

Multiangle Observations of Arctic Clouds from FIRE ACE: June 3, 1998 Case Study  

SciTech Connect (OSTI)

In May and June 1998 the Airborne Multiangle Imaging Spectroradiometer (AirMISR) participated in the FIRE Arctic Cloud Experiment (ACE). AirMISR is an airborne instrument for obtaining multiangle imagery similar to that of the satellite-borne MISR instrument. This paper presents a detailed analysis of the data collected on June 3, 1998. In particular, AirMISR radiance measurements are compared with measurements made by two other instruments, the Cloud Absorption Radiometer (CAR) and the MODIS airborne simulator (MAS), as well as to plane-parallel radiative transfer simulations. It is found that the AirMISR radiance measurements and albedo estimates compare favorably both with the other instruments and with the radiative transfer simulations. In addition to radiance and albedo, the multiangle AirMISR data can be used to obtain estimates of cloud top height using stereoimaging techniques. Comparison of AirMISR retrieved cloud top height (using the complete MISR-based stereoimaging approach) shows excellent agreement with the measurements from the airborne Cloud Lidar System (CLS) and ground-based millimeter-wave cloud radar.

Marchand, Roger T.; Ackerman, Thomas P.; King, M. D.; Moroney, C.; Davies, R.; Muller, J.-P. A. L.; Gerber, H.

2001-07-27T23:59:59.000Z

279

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

Science Journals Connector (OSTI)

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

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

2014-01-01T23:59:59.000Z

280

An ontology for trajectory simulation  

Science Journals Connector (OSTI)

From the concept exploration for a weapon system to training simulators, from hardware-in-the-loop simulators to mission planning tools, trajectory simulations are used throughout the life cycle of a weapon system. A trajectory simulation can be defined ...

Umut Durak; Halit Oguztuzun; S. Kemal Ider

2006-12-01T23:59:59.000Z

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

Final Report DE-EE0005380: Assessment of Offshore Wind Farm Effects on Sea Surface, Subsurface and Airborne Electronic Systems  

SciTech Connect (OSTI)

Offshore wind energy is a valuable resource that can provide a significant boost to the US renewable energy portfolio. A current constraint to the development of offshore wind farms is the potential for interference to be caused by large wind farms on existing electronic and acoustical equipment such as radar and sonar systems for surveillance, navigation and communications. The US Department of Energy funded this study as an objective assessment of possible interference to various types of equipment operating in the marine environment where offshore wind farms could be installed. The objective of this project was to conduct a baseline evaluation of electromagnetic and acoustical challenges to sea surface, subsurface and airborne electronic systems presented by offshore wind farms. To accomplish this goal, the following tasks were carried out: (1) survey electronic systems that can potentially be impacted by large offshore wind farms, and identify impact assessment studies and research and development activities both within and outside the US, (2) engage key stakeholders to identify their possible concerns and operating requirements, (3) conduct first-principle modeling on the interactions of electromagnetic signals with, and the radiation of underwater acoustic signals from, offshore wind farms to evaluate the effect of such interactions on electronic systems, and (4) provide impact assessments, recommend mitigation methods, prioritize future research directions, and disseminate project findings. This report provides a detailed description of the methodologies used to carry out the study, key findings of the study, and a list of recommendations derived based the findings.

Ling, Hao [The University of Texas at Austin] [The University of Texas at Austin; Hamilton, Mark F. [The University of Texas at Austin Applied Research Laboratories] [The University of Texas at Austin Applied Research Laboratories; Bhalla, Rajan [Science Applications International Corporation] [Science Applications International Corporation; Brown, Walter E. [The University of Texas at Austin Applied Research Laboratories] [The University of Texas at Austin Applied Research Laboratories; Hay, Todd A. [The University of Texas at Austin Applied Research Laboratories] [The University of Texas at Austin Applied Research Laboratories; Whitelonis, Nicholas J. [The University of Texas at Austin] [The University of Texas at Austin; Yang, Shang-Te [The University of Texas at Austin] [The University of Texas at Austin; Naqvi, Aale R. [The University of Texas at Austin] [The University of Texas at Austin

2013-09-30T23:59:59.000Z

282

Whole Building Energy Simulation  

Broader source: Energy.gov [DOE]

Whole building energy simulation, also referred to as energy modeling, can and should be incorporated early during project planning to provide energy impact feedback for which design considerations...

283

Vehicle Modeling and Simulation  

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

* PHEV Simulations and Analysis - Travel Profile Database - PHEV Impact on Components - Integration with Renewable Fuels - PHEV Economics - PHEV Test Procedures * Route-Based...

284

Simulation Supported Decision Making  

E-Print Network [OSTI]

.S. Navy Nuclear Program · Decades of dynamic operations of hundreds of nuclear power plants withoutSimulation Supported Decision Making Gene Allen Naval Surface Warfare Center Carderock Division SI: TO PASS ON WHAT I KNOW on SIMULATION · CAREER FOCUS: HOW TO USE COMPUTERS TO DO HELP MAKE BETTER DECISIONS

285

Simulation in the future  

Science Journals Connector (OSTI)

Seven panelists, all simulation consultants, give their view of the future of simulation. There is some consistency in the views with four areas being mentioned by three of the panelists, and four areas being mentioned by two of the panelists. However, ...

Jerry Banks

2000-12-01T23:59:59.000Z

286

Radiation detector spectrum simulator  

DOE Patents [OSTI]

A small battery operated nuclear spectrum simulator having a noise source nerates pulses with a Gaussian distribution of amplitudes. A switched dc bias circuit cooperating therewith generates several nominal amplitudes of such pulses and a spectral distribution of pulses that closely simulates the spectrum produced by a radiation source such as Americium 241.

Wolf, Michael A. (Los Alamos, NM); Crowell, John M. (Los Alamos, NM)

1987-01-01T23:59:59.000Z

287

Radiation detector spectrum simulator  

DOE Patents [OSTI]

A small battery operated nuclear spectrum simulator having a noise source generates pulses with a Gaussian distribution of amplitudes. A switched dc bias circuit cooperating therewith to generate several nominal amplitudes of such pulses and a spectral distribution of pulses that closely simulates the spectrum produced by a radiation source such as Americium 241.

Wolf, M.A.; Crowell, J.M.

1985-04-09T23:59:59.000Z

288

Estimated airborne release of plutonium from Atomics International's Nuclear Materials Development Facility in the Santa Susana site, California, as a result of postulated damage from severe wind and earthquake hazard  

SciTech Connect (OSTI)

The potential mass of airborne releases of plutonium (source term) that could result from wind and seismic damage is estimated for the Atomics International Company's Nuclear Materials Development Facility (NMDF) at the Santa Susana site in California. The postulated source terms will be useful as the basis for estimating the potential dose to the maximum exposed individual by inhalation and to the total population living within a prescribed radius of the site. The respirable fraction of airborne particles is thus the principal concern. The estimated source terms are based on the damage ratio, and the potential airborne releases if all enclosures suffer particular levels of damage. In an attempt to provide a realistic range of potential source terms that include most of the normal processing conditions, a best estimate bounded by upper and lower limits is provided. The range of source terms is calculated by combining a high best estimate and a low damage ratio, based on a fraction of enclosures suffering crush or perforation, with the airborne release from enclosures based upon an upper limit, average, and lower limit inventory of dispersible materials at risk. Two throughput levels are considered. The factors used to evaluate the fractional airborne release of materials and the exchange rates between enclosed and exterior atmospheres are discussed. The postulated damage and source terms are discussed for wind and earthquake hazard scenarios in order of their increasing severity.

Mishima, J.; Ayer, J.E.

1981-09-01T23:59:59.000Z

289

Computing Stuttering Simulations  

Science Journals Connector (OSTI)

Stuttering bisimulation is a well-known behavioural equivalence ... the next-time operator X. Correspondingly, the stuttering simulation preorder induces a coarser behavioural equivalence ... -time X and globally...

Francesco Ranzato; Francesco Tapparo

2009-01-01T23:59:59.000Z

290

BISEN: Biochemical Simulation Environment  

Science Journals Connector (OSTI)

......how to use MATLAB to generate...265 lines of MATLAB code compute...networks. In Chemical Biophysics...of Cellular Processes. (2008...Supplementary Data 1 - pdf file BISEN: Biochemical Simulation Environment...systems in the MATLAB computing......

J. Vanlier; F. Wu; F. Qi; K. C. Vinnakota; Y. Han; R. K. Dash; F. Yang; D. A. Beard

2009-03-15T23:59:59.000Z

291

Modeling & Simulation publications  

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

Modeling & Simulation » Modeling & Simulation » Modeling & Simulation Publications Modeling & Simulation publications Research into alternative forms of energy, especially energy security, is one of the major national security imperatives of this century. Get Expertise David Harradine Physical Chemistry and Applied Spectroscopy Email Josh Smith Chemistry Email The inherent knowledge of transformation has beguiled sorcerers and scientists alike. D.A. Horner, F. Lambert, J.D. Kress, and L.A. Collins, "Transport properties of lithium hydride from quantum molecular dynamics and orbital-free molecular dynamics," Physical Review B - Condensed Matter and Materials Physics 80(2) (2009). J.D. Kress, D.A. Horner, and L.A. Collins, "Mixing rules for optical and transport properties of warm, dense matter," AIP Conference Proceedings 1195, 931-934 (2009).

292

Applied large eddy simulation  

Science Journals Connector (OSTI)

...2971-2983. doi:10.1098/rsta.2008.0303 . Audio Supplement Audio Supplement Audio files from the Applied large eddy simulation...fidelity. | Whittle Laboratory, Department of Engineering, University of Cambridge, Cambridge CB2 1PZ...

2009-01-01T23:59:59.000Z

293

A restructurable logic simulator  

E-Print Network [OSTI]

elements were strictly binary and time was uniformly quantized. Interconnection information was used to confine simulation effort to active portions of the )ogic network. Delay was modeled with an event scheduling scheme, where logic state transitions... I7. g). Logic )evels become voltages and state transitions become transient responses. The circuit simulators include the effects of numerous parameters in their device models, and then generate their answers by numerically solving systems...

Ledford, Gordon Lee

2012-06-07T23:59:59.000Z

294

Some Aspects of Simulator Design  

Science Journals Connector (OSTI)

...Article Some Aspects of Simulator Design J. M. Dempsey Panellit Ltd., Borehamwood, UK Certain aspects of simulator design are considered with particular reference to the Elliott Nuclear Power......

J. M. Dempsey

1960-01-01T23:59:59.000Z

295

Computer simulation | Open Energy Information  

Open Energy Info (EERE)

simulation Jump to: navigation, search OpenEI Reference LibraryAdd to library Web Site: Computer simulation Author wikipedia Published wikipedia, 2013 DOI Not Provided Check for...

296

Advanced Simulation Capability for  

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

Simulation Capability for Simulation Capability for Environmental Management (ASCEM) ASCEM is being developed to provide a tool and approach to facilitate robust and standardized development of perfor- mance and risk assessments for cleanup and closure activi- ties throughout the EM complex. The ASCEM team is composed of scientists from eight National Laboratories. This team is leveraging Department of Energy (DOE) investments in basic science and applied research including high performance computing codes developed through the Advanced Scientific Computing Research and Advanced Simulation & Computing pro- grams as well as collaborating with the Offices of Science, Fossil Energy, and Nuclear Energy. Challenge Current groundwater and soil remediation challenges that will continue to be addressed in the next decade include

297

Simulation of LMFBR  

SciTech Connect (OSTI)

The title of this session is taken to imply the system-wide thermohydraulic simulation of liquid metal fast breeder reactors (LMFBR). One is interested in predicting the temperatures, pressures, and the coolant flow rates throughout the entire plant including the reactor core, the primary and secondary sodium heat transport circuits, the steam generating system as well as other auxiliary circuits. Such a simulation is needed for (1) scoping studies (i.e., in the pre-design phase of a plant), (2) detailed design development, (3) the safety analysis (post-design development phase), and (4) the operator training and plant operation. This session emphasizes the simulation of LMFBRs for only two key categories of transients: operational disturbances or events and the post-shutdown heat removal.

Agrawal, A.K.

1982-01-01T23:59:59.000Z

298

Computing Stuttering Simulations  

E-Print Network [OSTI]

Stuttering bisimulation is a well-known behavioral equivalence that preserves CTL-X, namely CTL without the next-time operator X. Correspondingly, the stuttering simulation preorder induces a coarser behavioral equivalence that preserves the existential fragment ECTL-{X,G}, namely ECTL without the next-time X and globally G operators. While stuttering bisimulation equivalence can be computed by the well-known Groote and Vaandrager's [1990] algorithm, to the best of our knowledge, no algorithm for computing the stuttering simulation preorder and equivalence is available. This paper presents such an algorithm for finite state systems.

Ranzato, Francesco

2009-01-01T23:59:59.000Z

299

Advanced Simulation and Computing  

National Nuclear Security Administration (NNSA)

NA-ASC-117R-09-Vol.1-Rev.0 NA-ASC-117R-09-Vol.1-Rev.0 Advanced Simulation and Computing PROGRAM PLAN FY09 October 2008 ASC Focal Point Robert Meisner, Director DOE/NNSA NA-121.2 202-586-0908 Program Plan Focal Point for NA-121.2 Njema Frazier DOE/NNSA NA-121.2 202-586-5789 A Publication of the Office of Advanced Simulation & Computing, NNSA Defense Programs i Contents Executive Summary ----------------------------------------------------------------------------------------------- 1 I. Introduction -------------------------------------------------------------------------------------------------------- 2 Realizing the Vision ------------------------------------------------------------------------------------------------- 2 The Future of the Nuclear Weapons Complex ---------------------------------------------------------------- 2

300

Visualizing Gyrokinetic Simulations  

Science Journals Connector (OSTI)

The continuing advancement of plasma science is central to realizing fusion as an inexpensive and safe energy source. Gryokinetic simulations of plasmas are fundamental to the understanding of turbulent transport in fusion plasma. This paper discusses ... Keywords: graphics hardware, non-rectilinear mesh, plasma physics, scientific visualization, texture methods, volume visualization

David Crawford; Kwan-Liu Ma; Min-Yu Huang; Scott Klasky; Stephane Ethier

2004-10-01T23:59:59.000Z

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

Introduction. Biomolecular simulation  

Science Journals Connector (OSTI)

...Chemical bonding is a quantum mechanical phenomenon...account the essential quantum mechanics (QM) are...enzyme reaction involves quantum tunnelling, an area...simulation promises in future to provide exciting new...machines such as biological motors and pumps. This themed...

2008-01-01T23:59:59.000Z

302

Enabling immersive simulation.  

SciTech Connect (OSTI)

The object of the 'Enabling Immersive Simulation for Complex Systems Analysis and Training' LDRD has been to research, design, and engineer a capability to develop simulations which (1) provide a rich, immersive interface for participation by real humans (exploiting existing high-performance game-engine technology wherever possible), and (2) can leverage Sandia's substantial investment in high-fidelity physical and cognitive models implemented in the Umbra simulation framework. We report here on these efforts. First, we describe the integration of Sandia's Umbra modular simulation framework with the open-source Delta3D game engine. Next, we report on Umbra's integration with Sandia's Cognitive Foundry, specifically to provide for learning behaviors for 'virtual teammates' directly from observed human behavior. Finally, we describe the integration of Delta3D with the ABL behavior engine, and report on research into establishing the theoretical framework that will be required to make use of tools like ABL to scale up to increasingly rich and realistic virtual characters.

McCoy, Josh (University of California Santa Cruz, Santa Cruz, CA); Mateas, Michael (University of California Santa Cruz, Santa Cruz, CA); Hart, Derek H.; Whetzel, Jonathan; Basilico, Justin Derrick; Glickman, Matthew R.; Abbott, Robert G.

2009-02-01T23:59:59.000Z

303

ClimateSimulation Biogeochemistry  

E-Print Network [OSTI]

to sequester further CO2 emissions. Chlorophyll concentration from an eddy-resolving POP simulation with full ability of the ocean to sequester further CO2 emissions. Chlorophyll concentration from an eddy release and the future ability of the ocean to sequester further CO2 emissions. Chlorophyll concentration

304

FASTBUS simulation tools  

SciTech Connect (OSTI)

A generalized model of a FASTBUS master is presented. The model is used with simulation tools to aid in the specification, design, and production of FASTBUS slave modules. The model provides a mechanism to interact with the electrical schematics and software models to predict performance. The model is written in the IEEE std 1076-1987 hardware description language VHDL. A model of the ATC logic is also presented. VHDL was chosen to provide portability to various platforms and simulation tools. The models, in conjunction with most commercially available simulators, will perform all of the transactions specified in IEEE std 960-1989. The models may be used to study the behavior of electrical schematics and other software models and detect violations of the FASTBUS protocol. For example, a hardware design of a slave module could be studied, protocol violations detected and corrected before committing money to prototype development. The master model accepts a stream of high level commands from an ASCII file to initiate FASTBUS transactions. The high level command language is based on the FASTBUS standard routines listed in IEEE std 1177-1989. Using this standard-based command language to direct the model of the master, hardware engineers can simulate FASTBUS transactions in the language used by physicists and programmers to operate FASTBUS systems. 15 refs., 6 figs.

Dean, T.D. (Stanford Linear Accelerator Center, Menlo Park, CA (United States)); Haney, M.J. (Illinois Univ., Urbana, IL (United States))

1991-10-01T23:59:59.000Z

305

Regularization strategy for the layered inversion of airborne TEM data: application to VTEM data acquired over the basin of Franceville (Gabon)  

E-Print Network [OSTI]

Airborne transient electromagnetic (TEM) is a cost-effective method to image the distribution of electrical conductivity in the ground. We consider layered earth inversion to interpret large data sets of hundreds of kilometre. Different strategies can be used to solve this inverse problem. This consists in managing the a priori information to avoid the mathematical instability and provide the most plausible model of conductivity in depth. In order to obtain fast and realistic inversion program, we tested three kinds of regularization: two are based on standard Tikhonov procedure which consist in minimizing not only the data misfit function but a balanced optimization function with additional terms constraining the lateral and the vertical smoothness of the conductivity; another kind of regularization is based on reducing the condition number of the kernel by changing the layout of layers before minimizing the data misfit function. Finally, in order to get a more realistic distribution of conductivity, notably...

Guillemoteau, Julien; Behaegel, Mickael; 10.1111/j.1365-2478.2011.00990.x

2012-01-01T23:59:59.000Z

306

Simulation standards: a framework for standard modular simulation  

Science Journals Connector (OSTI)

The primary reason for building manufacturing simulations is to provide support tools that aid the manufacturing decision-making process. Simulations are typically a part of a case study commissioned by manufacturing management to address a particular ...

Charles McLean; Swee Leong

2002-12-01T23:59:59.000Z

307

Simulation for ARPI and the Air Campaign Simulator Scott Anderson  

E-Print Network [OSTI]

' #12;Simulation for ARPI and the Air Campaign Simulator Paul Cohen Scott Anderson David Westbrook will be satis ed, and so forth. Nevertheless, such evaluation is critical to a sci- enti c understanding of how

Southern California, University of

308

Risk Analysis and Simulation  

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

Analysis and Simulation Analysis and Simulation for Geologic Storage of CO 2 BEST PRACTICES for: 2013 Revised Edition Disclaimer This report was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States Government nor any agency thereof, nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights. Reference therein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise does not necessarily constitute or imply its endorsement, recommendation, or favoring by the United States Government or any agency thereof. The

309

Implicit Large Eddy Simulation  

National Nuclear Security Administration (NNSA)

Implicit Implicit Large Eddy Simulation (ILES) for High Reynolds Number Flows Len Margolin Applied Physics Division Los Alamos National Laboratory Collaborators: 1. Bill Rider (LANL) 2. Piotr Smolarkiewicz (NCAR) 3. Andrzej Wysogrodski (NCAR) 4. Fernando Grinstein (NRL) len@lanl.gov 1 Implicit Large Eddy Simulation Outline: * What is ILES? * What are its advantages? * Historical perspective * Why does it work? * Some examples len@lanl.gov 2 What is ILES ILES is the direct application of a fluid solver to a high Reynolds number fluid flow with no explicit turbulence model. · The truncation terms of the algorithm serve as an effective model of the effects of the unresolved scales. · Fluid solvers based on Nonoscillatory Finite Volume (NFV) approximations work effectively for ILES. · Fluid solvers based on pseudospectral methods, leapfrog methods, advective form methods, etc. do not work

310

PEBBLES Mechanics Simulation Speedup  

SciTech Connect (OSTI)

Pebble bed reactors contain large numbers of spherical fuel elements arranged randomly. Determining the motion and location of these fuel elements is required for calculating certain parameters of pebble bed reactor operation. These simulations involve hundreds of thousands of pebbles and involve determining the entire core motion as pebbles are recirculated. Single processor algorithms for this are insufficient since they would take decades to centuries of wall-clock time. This paper describes the process of parallelizing and speeding up the PEBBLES pebble mechanics simulation code. Both shared memory programming with the Open Multi-Processing API and distributed memory programming with the Message Passing Interface API are used in simultaneously in this process. A new shared memory lock-less linear time collision detection algorithm is described. This method allows faster detection of pebbles in contact than generic methods. These combine to make full recirculations on AVR sized reactors possible in months of wall clock time.

Joshua J. Cogliati; Abderrafi M. Ougouag

2010-05-01T23:59:59.000Z

311

The Simulation Intranet Architecture  

SciTech Connect (OSTI)

The Simdarion Infranet (S1) is a term which is being used to dcscribc one element of a multidisciplinary distributed and distance computing initiative known as DisCom2 at Sandia National Laboratory (http ct al. 1998). The Simulation Intranet is an architecture for satisfying Sandia's long term goal of providing an end- to-end set of scrviccs for high fidelity full physics simu- lations in a high performance, distributed, and distance computing environment. The Intranet Architecture group was formed to apply current distributed object technologies to this problcm. For the hardware architec- tures and software models involved with the current simulation process, a CORBA-based architecture is best suited to meet Sandia's needs. This paper presents the initial desi-a and implementation of this Intranct based on a three-tier Network Computing Architecture(NCA). The major parts of the architecture include: the Web Cli- ent, the Business Objects, and Data Persistence.

Holmes, V.P.; Linebarger, J.M.; Miller, D.J.; Vandewart, R.L.

1998-12-02T23:59:59.000Z

312

SATCOM constellation power simulation  

SciTech Connect (OSTI)

Three basic variables directly impact the power and energy generated by the SATCOM satellite constellation and its individual Space Vehicles (SVs). They are (1) telecommunications traffic patterns, (2) network resource management controllables, and (3) system hardware and software performance. This power simulation has verified the robustness of the telecommunications architecture. It has validated the onboard resource allocation process from an SV and network level power and energy perspective. The analyses have led to development of operational procedures that prevent SV node outages, and maximize network telecommunication traffic capacity. The program objective is to optimize overall system operation, availability and quality of service. Achieving this goal requires a thorough understanding of the Electrical Power Subsystem and its interfaces. The EPS simulation model analyzes network level performance by evaluating requirement compliance in the expected operating environments. Specifically, the simulation tool evaluates different design approaches and network operational strategies from a power and energy perspective. As a result, optimal load management solutions will be implemented both on-board the SV and via ground station directed resource allocation strategies.

Capulli, J.; Badke, B.; Davis, G. [Motorola, Chandler, AZ (United States)

1995-12-31T23:59:59.000Z

313

COLLABORATIVE: FUSION SIMULATION PROGRAM  

SciTech Connect (OSTI)

New York University, Courant Institute of Mathematical Sciences, participated in the ���¢��������Fusion Simulation Program (FSP) Planning Activities���¢������� [http://www.pppl.gov/fsp], with C.S. Chang as the institutional PI. FSP���¢��������s mission was to enable scientific discovery of important new plasma phenomena with associated understanding that emerges only upon integration. This requires developing a predictive integrated simulation capability for magnetically-confined fusion plasmas that are properly validated against experiments in regimes relevant for producing practical fusion energy. Specific institutional goal of the New York University was to participate in the planning of the edge integrated simulation, with emphasis on the usage of large scale HPCs, in connection with the SciDAC CPES project which the PI was leading. New York University successfully completed its mission by participating in the various planning activities, including the edge physics integration, the edge science drivers, and the mathematical verification. The activity resulted in the combined report that can be found in http://www.pppl.gov/fsp/Overview.html. Participation and presentations as part of this project are listed in a separation file.

Chang, Choong Seock

2012-06-05T23:59:59.000Z

314

Simulation of the strong interaction  

Science Journals Connector (OSTI)

...Issue New science from high-performance computing organized by Richard Catlow...lattice qcd|simulation|high-performance computing|quark masses|b physics...lattice QCD; simulation; high-performance computing; quark masses; B physics...

2002-01-01T23:59:59.000Z

315

Simulation Modeling of Estuarine Ecosystems  

Science Journals Connector (OSTI)

A simulation model has been developed of Galveston Bay, Texas ecosystem. Secondary productivity measured by harvestable species...

Robert W. Johnson

1980-01-01T23:59:59.000Z

316

December 2003 SIMULATION NEWS EUROPE  

E-Print Network [OSTI]

Simulating High Energy Ball Mills using Discrete Events ­ page 3 Transport Logistics Study Discrete Event, CP, C10, C11, C15 11 Comparison Solutions Comparisons of Modelling and Simulation Techniques Europe, comparisons on simulation techniques Editor-in-Chief: Felix Breitenecker, TU Vienna - ARGESIM, c

Kuzmanov, Georgi

317

Plasma theory and simulation research  

SciTech Connect (OSTI)

Our research group uses both theory and simulation as tools in order to increase the understanding of instabilities, heating, diffusion, transport and other phenomena in plasmas. We also work on the improvement of simulation, both theoretically and practically. Our focus has been more and more on the plasma edge (the sheath''), interactions with boundaries, leading to simulations of whole devices (someday a numerical tokamak).

Birdsall, C.K.

1989-01-01T23:59:59.000Z

318

Bio-threat microparticle simulants  

SciTech Connect (OSTI)

A bio-threat simulant that includes a carrier and DNA encapsulated in the carrier. Also a method of making a simulant including the steps of providing a carrier and encapsulating DNA in the carrier to produce the bio-threat simulant.

Farquar, George Roy; Leif, Roald

2014-09-16T23:59:59.000Z

319

Computer Simulations of Protein Folding  

E-Print Network [OSTI]

CHAPTER 8 Computer Simulations of Protein Folding VIJAY S. PANDE , ERIC J. SORIN , CHRISTOPHER D, CA 94305, USA 8.1 Introduction: Goals and Challenges of Simulating Protein Folding Computer as well as recent applications of this methodology. 8.1.1 Simulating Protein Folding Proteins play

Sorin, Eric J.

320

Simulating Cosmic Reionization  

E-Print Network [OSTI]

The Cosmic Dark Ages and the Epoch of Reionization constitute a crucial missing link in our understanding of the evolution of the intergalactic medium and the formation and evolution of galaxies. Due to the complex nature of this global process it is best studied through large-scale numerical simulations. This presents considerable computational challenges. The dominant contributors of ionizing radiation were dwarf galaxies. These tiny galaxies must be resolved in very large cosmological volumes in order to derive their clustering properties and the corresponding observational signatures correctly, which makes this one of the most challenging problems of numerical cosmology. We have recently performed the largest and most detailed simulations of the formation of early cosmological large-scale structures and their radiative feedback leading to cosmic reionization. This was achieved by running extremely large (up to 29 billion-particle) N-body simulations of the formation of the Cosmic Web, with enough particles and sufficient force resolution to resolve all the galactic halos with total masses larger than 10^8 Solar masses in computational volumes of up to (163 Mpc)^3. These results were then post-processed by propagating the ionizing radiation from all sources by using fast and accurate ray-tracing radiative transfer method. Both of our codes are parallelized using a combination of MPI and OpenMP and to this date have been run efficiently on up to 2048 cores (N-body) and up to 10000 cores (radiative transfer) on the newly-deployed Sun Constellation Linux Cluster at the Texas Advanced Computing Center. In this paper we describe our codes, parallelization strategies, scaling and some preliminary scientific results. (abridged)

Ilian T. Iliev; Paul R. Shapiro; Garrelt Mellema; Hugh Merz; Ue-Li Pen

2008-06-17T23:59:59.000Z

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

Plasma Simulation Program  

SciTech Connect (OSTI)

Many others in the fusion energy and advanced scientific computing communities participated in the development of this plan. The core planning team is grateful for their important contributions. This summary is meant as a quick overview the Fusion Simulation Program's (FSP's) purpose and intentions. There are several additional documents referenced within this one and all are supplemental or flow down from this Program Plan. The overall science goal of the DOE Office of Fusion Energy Sciences (FES) Fusion Simulation Program (FSP) is to develop predictive simulation capability for magnetically confined fusion plasmas at an unprecedented level of integration and fidelity. This will directly support and enable effective U.S. participation in International Thermonuclear Experimental Reactor (ITER) research and the overall mission of delivering practical fusion energy. The FSP will address a rich set of scientific issues together with experimental programs, producing validated integrated physics results. This is very well aligned with the mission of the ITER Organization to coordinate with its members the integrated modeling and control of fusion plasmas, including benchmarking and validation activities. [1]. Initial FSP research will focus on two critical Integrated Science Application (ISA) areas: ISA1, the plasma edge; and ISA2, whole device modeling (WDM) including disruption avoidance. The first of these problems involves the narrow plasma boundary layer and its complex interactions with the plasma core and the surrounding material wall. The second requires development of a computationally tractable, but comprehensive model that describes all equilibrium and dynamic processes at a sufficient level of detail to provide useful prediction of the temporal evolution of fusion plasma experiments. The initial driver for the whole device model will be prediction and avoidance of discharge-terminating disruptions, especially at high performance, which are a critical impediment to successful operation of machines like ITER. If disruptions prove unable to be avoided, their associated dynamics and effects will be addressed in the next phase of the FSP.

Greenwald, Martin

2011-10-04T23:59:59.000Z

322

Unipolar arc simulation device  

SciTech Connect (OSTI)

We describe a simple laboratory device for establishing a vacuum arc plasma discharge that can serve to simulate a unipolar arc. The technique makes use of a triggered vacuum arc plasma gun to generate a plasma plume that in turn causes breakdown of a secondary discharge. The device is in fact a secondary vacuum arc discharge that is triggered by a primary vacuum arc discharge, with some of the features of the secondary plasma discharge having similarities with a unipolar arc configuration. Here we describe the experimental setup and outline how the device can be used for some areas of unipolar arc materials research. [copyright] [ital 1999 American Institute of Physics.

Wang, S.G.; Brown, I.G. (Lawrence Berkeley National Laboratory, University of California, Berkeley, California 94720 (United States))

1999-09-01T23:59:59.000Z

323

SEALING SIMULATED LEAKS  

SciTech Connect (OSTI)

This report details the testing equipment, procedures and results performed under Task 7.2 Sealing Simulated Leaks. In terms of our ability to seal leaks identified in the technical topical report, Analysis of Current Field Data, we were 100% successful. In regards to maintaining seal integrity after pigging operations we achieved varying degrees of success. Internal Corrosion defects proved to be the most resistant to the effects of pigging while External Corrosion proved to be the least resistant. Overall, with limitations, pressure activated sealant technology would be a viable option under the right circumstances.

Michael A. Romano

2004-09-01T23:59:59.000Z

324

Gyrokinetic large eddy simulations  

SciTech Connect (OSTI)

The large eddy simulation approach is adapted to the study of plasma microturbulence in a fully three-dimensional gyrokinetic system. Ion temperature gradient driven turbulence is studied with the GENE code for both a standard resolution and a reduced resolution with a model for the sub-grid scale turbulence. A simple dissipative model for representing the effect of the sub-grid scales on the resolved scales is proposed and tested. Once calibrated, the model appears to be able to reproduce most of the features of the free energy spectra for various values of the ion temperature gradient.

Morel, P.; Navarro, A. Banon; Albrecht-Marc, M.; Carati, D. [Statistical and Plasma Physics Laboratory, Universite Libre de Bruxelles, Bruxelles 1050 (Belgium); Merz, F.; Goerler, T.; Jenko, F. [Max-Planck-Institut fuer Plasmaphysik, Boltzmannstr. 2, D-85748 Garching (Germany)

2011-07-15T23:59:59.000Z

325

THERM NFRC Simulation Manual  

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

/ WINDOW 6.3 / WINDOW 6.3 NFRC Simulation Manual Lawrence Berkeley National Laboratory July 2013 DISCLAIMER This document was prepared as an account of work sponsored by the United States Government. While this document is believed to contain correct information, neither the United States Government nor any agency thereof, nor The Regents of the University of California, nor any of their employees, makes any warranty, express or implied, or assumes any legal responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights. Reference herein to any specific commercial product process, or service by its trade name, trademark, manufacturer, or otherwise, does not necessarily constitute or imply its endorsement,

326

LSST beam simulator  

Science Journals Connector (OSTI)

It is always important to test new imagers for a mosaic camera before device acceptance and constructing the mosaic. This is particularly true of the LSST CCDs due to the fast beam illumination: at long wavelengths there can be significant beam divergence (defocus) inside the silicon because of the long absorption length for photons near the band gap. Moreover, realistic sky scenes need to be projected onto the CCD focal plane Thus, we need to design and build an f/1.2 re-imaging system. The system must simulate the entire LSST1 operation, including a sky with galaxies and stars with approximately black-body spectra superimposed on a spatially diffuse night sky emission with its complex spectral features.

J A Tyson; J Sasian; C Claver; G Muller; K Gilmor; M Klint

2014-01-01T23:59:59.000Z

327

Dynamic simulation of Odoo  

Science Journals Connector (OSTI)

Abstract The thermal habits of Odoo were examined and energy consumption data were also predicted. Special tests were performed for the time of the competition, and whole year was also analysed. The climatic data were of Madrid as the competition took place there. The modelling environment was MATLAB's Simulink with a built-in module of Simscape. It is for especially examining thermal behaviours. MATLAB itself is capable of solving differential equations by time, for this reason dynamic simulations can be performed. First the building structure was created, and then the heatflows affecting the internal temperature were added. In this paper detailed process of creating the model is presented, and some results are discussed, including some possibilities of further improvements.

Gábor Haas-Schnabel; Csaba Szikra

2014-01-01T23:59:59.000Z

328

Environmental gaming simulation network  

Science Journals Connector (OSTI)

This paper describes the construction of an infrastructure for global peace gaming, in particular on the issue of environmental and sustainable development in Third World countries. The gaming is intended to train would-be decision-makers in crisis management, conflict resolution and negotiation techniques. Experience shows that the expertise necessary to participate in peace games does not exist in many parts of the world. To help educate future participants, and to promote the cause of peace by enhancing exchanges of education and joint research, the Global Systems Analysis and Simulation (GLOSAS) Project is attempting to create a global (electronic) university consortium. This paper provides a brief account of the steps taken over the past 12 years which have led to the development of the Global University now being organised to meet the challenge of global issues both today and in the 21st century.

Takeshi Utsumi; Philip S. Gang

1991-01-01T23:59:59.000Z

329

Lattice Boltzmann Simulation Optimization  

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

Boltzmann Boltzmann Simulation Optimization on Leading Multicore Platforms Selected as Best Paper in Application Track, IPDPS 2008, April 14-28, Miami, Florida, USA Samuel Williams † , Jonathan Carter , Leonid Oliker John Shalf , Katherine Yelick † CRD/NERSC, Lawrence Berkeley National Laboratory Berkeley, CA 94720 † CS Division, University of California at Berkeley, Berkeley, CA 94720 {SWWilliams, JTCarter, LOliker, JShalf, KAYelick}@lbl.gov Abstract We present an auto-tuning approach to optimize ap- plication performance on emerging multicore architec- tures. The methodology extends the idea of search- based performance optimizations, popular in linear al- gebra and FFT libraries, to application-specific com- putational kernels. Our work applies this strategy to a lattice Boltzmann application (LBMHD) that histor- ically has made poor use of scalar microprocessors

330

Non-detonable explosive simulators  

DOE Patents [OSTI]

A simulator which is chemically equivalent to an explosive, but is not detonable. The simulator has particular use in the training of explosives detecting dogs and calibrating sensitive analytical instruments. The explosive simulants may be fabricated by different techniques, a first involves the use of standard slurry coatings to produce a material with a very high binder to explosive ratio without masking the explosive vapor, and the second involves coating inert beads with thin layers of explosive molecules. 5 figs.

Simpson, R.L.; Pruneda, C.O.

1994-11-01T23:59:59.000Z

331

Non-detonable explosive simulators  

DOE Patents [OSTI]

A simulator which is chemically equivalent to an explosive, but is not detonable. The simulator has particular use in the training of explosives detecting dogs and calibrating sensitive analytical instruments. The explosive simulants may be fabricated by different techniques, a first involves the use of standard slurry coatings to produce a material with a very high binder to explosive ratio without masking the explosive vapor, and the second involves coating inert beads with thin layers of explosive molecules.

Simpson, Randall L. (Livermore, CA); Pruneda, Cesar O. (Livermore, CA)

1994-01-01T23:59:59.000Z

332

MJO Simulation Diagnostics  

SciTech Connect (OSTI)

The Madden-Julian Oscillation (MJO) interacts with, and influences, a wide range of weather and climate phenomena (e.g., monsoons, ENSO, tropical storms, mid-latitude weather), and represents an important, and as yet unexploited, source of predictability at the subseasonal time scale. Despite the important role of the MJO in our climate and weather systems, current global circulation models (GCMs) exhibit considerable shortcomings in representing this phenomenon. These shortcomings have been documented in a number of multi-model comparison studies over the last decade. However, diagnosis of model performance has been challenging, and model progress has been difficult to track, due to the lack of a coherent and standardized set of MJO diagnostics. One of the chief objectives of the US CLIVAR MJO Working Group is the development of observation-based diagnostics for objectively evaluating global model simulations of the MJO in a consistent framework. Motivation for this activity is reviewed, and the intent and justification for a set of diagnostics is provided, along with specification for their calculation, and illustrations of their application. The diagnostics range from relatively simple analyses of variance and correlation, to more sophisticated space-time spectral and empirical orthogonal function analyses. These diagnostic techniques are used to detect MJO signals, to construct composite life-cycles, to identify associations of MJO activity with the mean state, and to describe interannual variability of the MJO.

Waliser, D; Sperber, K; Hendon, H; Kim, D; Maloney, E; Wheeler, M; Weickmann, K; Zhang, C; Donner, L; Gottschalck, J; Higgins, W; Kang, I; Legler, D; Moncrieff, M; Schubert, S; Stern, W; Vitart, F; Wang, B; Wang, W; Woolnough, S

2008-06-02T23:59:59.000Z

333

2, 209232, 2006 Simulation of  

E-Print Network [OSTI]

Seas, causing an expansion of sea ice that produces10 additional cooling. The consequenceCPD 2, 209­232, 2006 Simulation of Holocene cooling events H. Renssen et al. Title Page Abstract climate model simulation of Holocene cooling events: solar forcing triggers oceanic feedback H. Renssen1

Paris-Sud XI, Université de

334

Crowd modeling and simulation technologies  

Science Journals Connector (OSTI)

As a collective and highly dynamic social group, the human crowd is a fascinating phenomenon that has been frequently studied by experts from various areas. Recently, computer-based modeling and simulation technologies have emerged to support investigation ... Keywords: Crowd simulation, crowd dynamics, human behavior, multi-agent system

Suiping Zhou; Dan Chen; Wentong Cai; Linbo Luo; Malcolm Yoke Hean Low; Feng Tian; Victor Su-Han Tay; Darren Wee Sze Ong; Benjamin D. Hamilton

2010-10-01T23:59:59.000Z

335

MESOSCALE SIMULATIONS OF POWDER COMPACTION  

SciTech Connect (OSTI)

Mesoscale 3D simulations of shock compaction of metal and ceramic powders have been performed with an Eulerian hydrocode GEODYN. The approach was validated by simulating a well-characterized shock compaction experiment of a porous ductile metal. Simulation results using the Steinberg material model and handbook values for solid 2024 aluminum showed good agreement with experimental compaction curves and wave profiles. Brittle ceramic materials are not as well studied as metals, so a simple material model for solid ceramic (tungsten carbide) has been calibrated to match experimental compaction curves. Direct simulations of gas gun experiments with ceramic powders have been performed and showed good agreement with experimental data. The numerical shock wave profile has same character and thickness as that measured experimentally using VISAR. The numerical results show reshock states above the single-shock Hugoniot line as observed in experiments. We found that for good quantitative agreement with experiments 3D simulations are essential.

Lomov, Ilya; Fujino, Don; Antoun, Tarabay; Liu, Benjamin [Lawrence Livermore National Laboratory, P. O. Box 808, Livermore CA 94551 (United States)

2009-12-28T23:59:59.000Z

336

NASA MODIS Previews NPOESS VIIRS Capabilities  

Science Journals Connector (OSTI)

The Visible/Infrared Imager Radiometer Suite (VIIRS), scheduled to fly on the satellites of the National Polar-orbiting Operational Environmental Satellite System, will combine the missions of the Advanced Very High Resolution Radiometer (AVHRR), ...

Thomas F. Lee; Steven D. Miller; Carl Schueler; Shawn Miller

2006-08-01T23:59:59.000Z

337

The Xygra gun simulation tool.  

SciTech Connect (OSTI)

Inductive electromagnetic launchers, or coilguns, use discrete solenoidal coils to accelerate a coaxial conductive armature. To date, Sandia has been using an internally developed code, SLINGSHOT, as a point-mass lumped circuit element simulation tool for modeling coilgun behavior for design and verification purposes. This code has shortcomings in terms of accurately modeling gun performance under stressful electromagnetic propulsion environments. To correct for these limitations, it was decided to attempt to closely couple two Sandia simulation codes, Xyce and ALEGRA, to develop a more rigorous simulation capability for demanding launch applications. This report summarizes the modifications made to each respective code and the path forward to completing interfacing between them.

Garasi, Christopher Joseph; Lamppa, Derek C.; Aubuchon, Matthew S.; Shirley, David Noyes; Robinson, Allen Conrad; Russo, Thomas V.

2008-12-01T23:59:59.000Z

338

Challenges in Merger Simulation Analysis  

E-Print Network [OSTI]

In this paper, we share our experience with merger simulations using a Random Coefficient Logit model on the demand side and assuming a static Bertrand game on the supply side. Drawing largely from our work in Knittel and ...

Knittel, Christopher Roland

339

Adaptive Sampling in Hierarchical Simulation  

SciTech Connect (OSTI)

We propose an adaptive sampling methodology for hierarchical multi-scale simulation. The method utilizes a moving kriging interpolation to significantly reduce the number of evaluations of finer-scale response functions to provide essential constitutive information to a coarser-scale simulation model. The underlying interpolation scheme is unstructured and adaptive to handle the transient nature of a simulation. To handle the dynamic construction and searching of a potentially large set of finer-scale response data, we employ a dynamic metric tree database. We study the performance of our adaptive sampling methodology for a two-level multi-scale model involving a coarse-scale finite element simulation and a finer-scale crystal plasticity based constitutive law.

Knap, J; Barton, N R; Hornung, R D; Arsenlis, A; Becker, R; Jefferson, D R

2007-07-09T23:59:59.000Z

340

Heat Recovery Steam Generator Simulation  

E-Print Network [OSTI]

The paper discusses the applications of Heat Recovery Steam Generator Simulation. Consultants, plant engineers and plant developers can evaluate the steam side performance of HRSGs and arrive at the optimum system which matches the needs...

Ganapathy, V.

Note: This page contains sample records for the topic "modis airborne simulator" 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 Parallel Quantum Computer Simulator  

E-Print Network [OSTI]

A Quantum Computer is a new type of computer which can efficiently solve complex problems such as prime factorization. A quantum computer threatens the security of public key encryption systems because these systems rely on the fact that prime factorization is computationally difficult. Errors limit the effectiveness of quantum computers. Because of the exponential nature of quantum com puters, simulating the effect of errors on them requires a vast amount of processing and memory resources. In this paper we describe a parallel simulator which accesses the feasibility of quantum computers. We also derive and validate an analytical model of execution time for the simulator, which shows that parallel quantum computer simulation is very scalable.

Kevin M. Obenland; Alvin M. Despain

1998-04-16T23:59:59.000Z

342

Simulating Afterburn with LLNL Hydrocodes  

SciTech Connect (OSTI)

Presented here is a working methodology for adapting a Lawrence Livermore National Laboratory (LLNL) developed hydrocode, ALE3D, to simulate weapon damage effects when afterburn is a consideration in the blast propagation. Experiments have shown that afterburn is of great consequence in enclosed environments (i.e. bomb in tunnel scenario, penetrating conventional munition in a bunker, or satchel charge placed in a deep underground facility). This empirical energy deposition methodology simulates the anticipated addition of kinetic energy that has been demonstrated by experiment (Kuhl, et. al. 1998), without explicitly solving the chemistry, or resolving the mesh to capture small-scale vorticity. This effort is intended to complement the existing capability of either coupling ALE3D blast simulations with DYNA3D or performing fully coupled ALE3D simulations to predict building or component failure, for applications in National Security offensive strike planning as well as Homeland Defense infrastructure protection.

Daily, L D

2004-06-11T23:59:59.000Z

343

The simulation system SIMPLEX II  

E-Print Network [OSTI]

in the response of the model. Sensitivity analysis can determine regions of instability in the parameter range space and therefore point to parameters, which have to be estimated with increased care. Using a stochastic simulation model we will demonstrate how...

Schinagl, Josef Georg

1995-01-01T23:59:59.000Z

344

Terascale Simulation Tools and Technologies  

SciTech Connect (OSTI)

We report the development of front tracking method as a simulation tool and technology for the computation on several important SciDAC and SciDAC associated applications. The progress includes the extraction of an independent software library from the front tracking code, conservative front tracking, applications of front tracking to the simulation of fusion pellet injection in a magnetically confined plasma, the study of a fuel injection jet, and the study of fluid chaotic mixing, among other problems.

Li, Xiaolin

2007-03-09T23:59:59.000Z

345

Numerical simulation of hydraulic fracturing  

E-Print Network [OSTI]

NUMERICAL SIMULATION OF HYDRAULIC FRACTURING A Thesis by JOSEPH BARNES WARNER Submitted to the Graduate College of Texas A&M University in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE May 1987 Maj or Subj ect...: Petroleum Engineering NUMERICAL SIMULATION OF HYDRAULIC FRACTURING A Thesis by JOSEPH BARNES WARNER Approved as to style and content by: S. A. Holditch (Chairman of Committee) D. D. Van Fleet (member) J. E. Russell (m be ) W. D. Von onten ( ead...

Warner, Joseph Barnes

2012-06-07T23:59:59.000Z

346

Building Technologies Office: House Simulation Protocols Report  

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

House Simulation House Simulation Protocols Report to someone by E-mail Share Building Technologies Office: House Simulation Protocols Report on Facebook Tweet about Building Technologies Office: House Simulation Protocols Report on Twitter Bookmark Building Technologies Office: House Simulation Protocols Report on Google Bookmark Building Technologies Office: House Simulation Protocols Report on Delicious Rank Building Technologies Office: House Simulation Protocols Report on Digg Find More places to share Building Technologies Office: House Simulation Protocols Report on AddThis.com... About Take Action to Save Energy Partner With DOE Activities Solar Decathlon Building America Research Innovations Research Tools Building Science Education Climate-Specific Guidance Solution Center

347

Sandia National Laboratories: Computational Modeling & Simulation  

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

Simulated Wind Data for Wave Resource Characterization at US Test Sites On September 17, 2014, in Computational Modeling & Simulation, Energy, News, News & Events, Renewable...

348

Compositional changes in heavy oil steamflood simulators.  

E-Print Network [OSTI]

??The numerical simulation of heavy oil steamfloods has generally been conducted assuming that the oil is non-volatile. Reservoir simulation has traditionally ignored compositional effect s… (more)

Lolley, Christopher Scott

2012-01-01T23:59:59.000Z

349

simulation-engineering | netl.doe.gov  

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

Simulation Engineering Sensors & Controls Simulation Engineering High Performance Materials Innovative Energy Concepts Water Management R&D University Research CCSI NRAP Program...

350

Clot Busting Simulations Test Potential Stroke Treatment  

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

Clot Busting Simulations Test Potential Stroke Treatment Clot Busting Simulations Test Potential Stroke Treatment September 24, 2013 | Tags: Biological and Environmental Research...

351

Vehicle & Systems Simulation & Testing | Department of Energy  

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

Vehicle & Systems Simulation & Testing Vehicle & Systems Simulation & Testing 2011 DOE Hydrogen and Fuel Cells Program, and Vehicle Technologies Program Annual Merit Review and...

352

Accelerated Molecular Dynamics Simulation of Thermal Desorption.  

E-Print Network [OSTI]

??Desorption is a process ubiquitous in phenomena involving surfaces. However, it has rarely been simulated on the molecular level. Molecular dynamics simulation can provide the… (more)

Becker, Kelly

2008-01-01T23:59:59.000Z

353

Verification and Validation of Simulation Model  

E-Print Network [OSTI]

Verification and Validation of Simulation Model 1 Verification and Validation 2 #12;Verification · Examples ­ simulation model: open networks with exponential interarrival time distribution and uniform

Shihada, Basem

354

Estimated airborne release of plutonium from the 102 Building at the General Electric Vallecitos Nuclear Center, Vallecitos, California, as a result of damage from severe wind and earthquake hazard  

SciTech Connect (OSTI)

This report estimates the potential airborne releases of plutonium as a consequence of various severities of earthquake and wind hazard postulated for the 102 Building at the General Electric Vallecitos Nuclear Center in California. The releases are based on damage scenarios developed by other specialists. The hazard severities presented range up to a nominal velocity of 230 mph for wind hazard and are in excess of 0.8 g linear acceleration for earthquakes. The consequences of thrust faulting are considered. The approaches and factors used to estimate the releases are discussed. Release estimates range from 0.003 to 3 g Pu.

Mishima, J.; Ayer, J.E.; Hays, I.D.

1980-12-01T23:59:59.000Z

355

Perspective of a hydrographic LIDAR in space: Specifications and results of a simulation  

E-Print Network [OSTI]

Oldenburg, Germany* ABSTRACT Long-term surveillance of coastal zones like the German Bight with airborne chlorophyll a will be given in the following section. Ocean monitoring on basin-wide global scales

Oldenburg, Carl von Ossietzky Universität

356

LFSC - Linac Feedback Simulation Code  

SciTech Connect (OSTI)

The computer program LFSC (Simulation Code>) is a numerical tool for simulation beam based feedback in high performance linacs. The code LFSC is based on the earlier version developed by a collective of authors at SLAC (L.Hendrickson, R. McEwen, T. Himel, H. Shoaee, S. Shah, P. Emma, P. Schultz) during 1990-2005. That code was successively used in simulation of SLC, TESLA, CLIC and NLC projects. It can simulate as pulse-to-pulse feedback on timescale corresponding to 5-100 Hz, as slower feedbacks, operating in the 0.1-1 Hz range in the Main Linac and Beam Delivery System. The code LFSC is running under Matlab for MS Windows operating system. It contains about 30,000 lines of source code in more than 260 subroutines. The code uses the LIAR ('Linear Accelerator Research code') for particle tracking under ground motion and technical noise perturbations. It uses the Guinea Pig code to simulate the luminosity performance. A set of input files includes the lattice description (XSIF format), and plane text files with numerical parameters, wake fields, ground motion data etc. The Matlab environment provides a flexible system for graphical output.

Ivanov, Valentin; /Fermilab

2008-05-01T23:59:59.000Z

357

Stochastic models: theory and simulation.  

SciTech Connect (OSTI)

Many problems in applied science and engineering involve physical phenomena that behave randomly in time and/or space. Examples are diverse and include turbulent flow over an aircraft wing, Earth climatology, material microstructure, and the financial markets. Mathematical models for these random phenomena are referred to as stochastic processes and/or random fields, and Monte Carlo simulation is the only general-purpose tool for solving problems of this type. The use of Monte Carlo simulation requires methods and algorithms to generate samples of the appropriate stochastic model; these samples then become inputs and/or boundary conditions to established deterministic simulation codes. While numerous algorithms and tools currently exist to generate samples of simple random variables and vectors, no cohesive simulation tool yet exists for generating samples of stochastic processes and/or random fields. There are two objectives of this report. First, we provide some theoretical background on stochastic processes and random fields that can be used to model phenomena that are random in space and/or time. Second, we provide simple algorithms that can be used to generate independent samples of general stochastic models. The theory and simulation of random variables and vectors is also reviewed for completeness.

Field, Richard V., Jr.

2008-03-01T23:59:59.000Z

358

Mesoscale Simulations of Power Compaction  

SciTech Connect (OSTI)

Mesoscale 3D simulations of metal and ceramic powder compaction in shock waves have been performed with an Eulerian hydrocode GEODYN. The approach was validated by simulating shock compaction of porous well-characterized ductile metal using Steinberg material model. Results of the simulations with handbook values for parameters of solid 2024 aluminum have good agreement with experimental compaction curves and wave profiles. Brittle ceramic materials are not so well studied as metals, so material model for ceramic (tungsten carbide) has been fitted to shock compression experiments of non-porous samples and further calibrated to match experimental compaction curves. Direct simulations of gas gun experiments with ceramic powder have been performed and showed good agreement with experimental data. Numerical shock wave profile has same character and thickness as measured with VISAR. Numerical results show reshock states above the single-shock Hugoniot line also observed in experiments. They found that to receive good quantitative agreement with experiment it is essential to perform 3D simulations.

Lomov, I; Fujino, D; Antoun, T; Liu, B

2009-08-06T23:59:59.000Z

359

Radiation in molecular dynamic simulations  

SciTech Connect (OSTI)

Hot dense radiative (HDR) plasmas common to Inertial Confinement Fusion (ICF) and stellar interiors have high temperature (a few hundred eV to tens of keV), high density (tens to hundreds of g/cc) and high pressure (hundreds of Megabars to thousands of Gigabars). Typically, such plasmas undergo collisional, radiative, atomic and possibly thermonuclear processes. In order to describe HDR plasmas, computational physicists in ICF and astrophysics use atomic-scale microphysical models implemented in various simulation codes. Experimental validation of the models used to describe HDR plasmas are difficult to perform. Direct Numerical Simulation (DNS) of the many-body interactions of plasmas is a promising approach to model validation but, previous work either relies on the collisionless approximation or ignores radiation. We present a new numerical simulation technique to address a currently unsolved problem: the extension of molecular dynamics to collisional plasmas including emission and absorption of radiation. The new technique passes a key test: it relaxes to a blackbody spectrum for a plasma in local thermodynamic equilibrium. This new tool also provides a method for assessing the accuracy of energy and momentum exchange models in hot dense plasmas. As an example, we simulate the evolution of non-equilibrium electron, ion, and radiation temperatures for a hydrogen plasma using the new molecular dynamics simulation capability.

Glosli, J; Graziani, F; More, R; Murillo, M; Streitz, F; Surh, M

2008-10-13T23:59:59.000Z

360

No-Arbitrage ROM simulation  

Science Journals Connector (OSTI)

Abstract Ledermann et al. (2011) propose random orthogonal matrix (ROM) simulation for generating multivariate samples matching means and covariances exactly. Its computational efficiency compared to standard Monte Carlo methods makes it an interesting alternative. In this paper we enhance this method?s attractiveness by focusing on applications in finance. Many financial applications require simulated asset returns to be free of arbitrage opportunities. We analytically derive no-arbitrage bounds for expected excess returns to be used in the context of ROM simulation, and we establish the theoretical relation between the number of states (i.e., the sample size) and the size of (no-)arbitrage regions. Based on these results, we present a No-Arbitrage ROM simulation algorithm, which generates arbitrage-free random samples by purposefully rotating a simplex. Hence, the proposed algorithm completely avoids any need for checking samples for arbitrage. Compared to the alternative of (potentially frequent) re-sampling followed by arbitrage checks, it is considerably more efficient. As a by-product, we provide interesting geometrical insights into affine transformations associated with the No-Arbitrage ROM simulation algorithm.

Alois Geyer; Michael Hanke; Alex Weissensteiner

2014-01-01T23:59:59.000Z

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

MOOSE: Multiphysics Object-Oriented Simulation Environment  

SciTech Connect (OSTI)

An overview of Idaho National Laboratory's MOOSE: Multiphysics Object-Oriented Simulation Environment

Gaston, Derek

2014-04-09T23:59:59.000Z

362

MOOSE: Multiphysics Object-Oriented Simulation Environment  

ScienceCinema (OSTI)

An overview of Idaho National Laboratory's MOOSE: Multiphysics Object-Oriented Simulation Environment

Gaston, Derek

2014-05-30T23:59:59.000Z

363

Visualization of Fuel Cell Simulations Niklas Rober  

E-Print Network [OSTI]

Simulation einer Brennstoffzelle. Dieser Datensatz ist ausserdem multimodal und besteht aus 5 Skalaren und

Zhang, Richard "Hao"

364

Modeling Asphaltene Precipitation in Reservoir Simulation  

Science Journals Connector (OSTI)

The primary goal of this study was to simulate the effects of asphaltene precipitation on miscible-gas flooding. ... We simulated three different cases to investigate the effect of asphaltene precipitation on oil production for different rock fabrics. ... (7) The simplified algorithm for asphaltene precipitation gives simulation results in agreement with simulations using the pseudo-multiphase algorithm and saves significant computational time. ...

Xiangjun Qin; Peng Wang; Kamy Sepehrnoori; Gary A. Pope

2000-06-28T23:59:59.000Z

365

Simulation Model Driven Engineering for Manufacturing Cell  

E-Print Network [OSTI]

Simulation Model Driven Engineering for Manufacturing Cell Hironori Hibino1 , Toshihiro Inukai2 Abstract. In our research, the simulation model driven engineering for manufacturing cell (SMDE on the simulation model and to extend the range of control applications and simulation applications using the PC

Paris-Sud XI, Université de

366

Special nuclear material simulation device  

DOE Patents [OSTI]

An apparatus for simulating special nuclear material is provided. The apparatus typically contains a small quantity of special nuclear material (SNM) in a configuration that simulates a much larger quantity of SNM. Generally the apparatus includes a spherical shell that is formed from an alloy containing a small quantity of highly enriched uranium. Also typically provided is a core of depleted uranium. A spacer, typically aluminum, may be used to separate the depleted uranium from the shell of uranium alloy. A cladding, typically made of titanium, is provided to seal the source. Methods are provided to simulate SNM for testing radiation monitoring portals. Typically the methods use at least one primary SNM spectral line and exclude at least one secondary SNM spectral line.

Leckey, John H.; DeMint, Amy; Gooch, Jack; Hawk, Todd; Pickett, Chris A.; Blessinger, Chris; York, Robbie L.

2014-08-12T23:59:59.000Z

367

Lattice Simulations and Infrared Conformality  

DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

We examine several recent lattice-simulation data sets, asking whether they are consistent with infrared conformality. We observe, in particular, that for an SU(3) gauge theory with 12 Dirac fermions in the fundamental representation, recent simulation data can be described assuming infrared conformality. Lattice simulations include a fermion mass m which is then extrapolated to zero, and we note that this data can be fit by a small-m expansion, allowing a controlled extrapolation. We also note that the conformal hypothesis does not work well for two theories that are known or expected to be confining and chirally broken, and that it does work well for another theory expected to be infrared conformal.

Appelquist, Thomas; Fleming, George T.; Lin, Meifeng; Neil, Ethan T.; Schaich, David A.

2011-09-01T23:59:59.000Z

368

A Simbol-X Event Simulator  

SciTech Connect (OSTI)

The ASI Science Data Center (ASDC) has developed an X-ray event simulator to support users (and team members) in simulation of data taken with the two cameras on board the Simbol-X X-Ray Telescope. The Simbol-X simulator is very fast and flexible, compared to ray-tracing simulator. These properties make our simulator advantageous to support the user in planning proposals and comparing real data with the theoretical expectations and for a quick detection of unexpected features. We present here the simulator outline and a few examples of simulated data.

Puccetti, S.; Giommi, P. [ASI Science data Center, via Galileo Galilei, 00044 Frascati (Italy); Fiore, F. [INAF-OAR, via Frascati 33, Monteporzio, I-00040 (Italy)

2009-05-11T23:59:59.000Z

369

Simulation of jets at colliders  

Science Journals Connector (OSTI)

Abstract We review the development of the physics behind event generators during the last decade. After a more general description of parton showers, we focus mostly on the perturbative side of the simulations. Two newer developments of parton showers, as implemented in herwig++, are described in greater detail. Matching and merging of parton showers with fixed order computations are discussed. We describe some developments of multiple partonic interactions which are relevant for the simulation of jets from the underlying event, where the implementation in herwig++  is again taken as a generic example. Finally, we compare some event generator results to collider data from LEP and the LHC.

Stefan Gieseke

2013-01-01T23:59:59.000Z

370

Slide 1  

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

Aircraft Observations: Simulation Results E. Kassianov, M. Ovtchinnikov, L. Berg, S. McFarlane and C. Flynn Pacific Northwest National Laboratoty Background * MODIS...

371

Global tropospheric ozone modeling: Quantifying errors due to grid resolution  

E-Print Network [OSTI]

model-derived monthly climatologies [Tegen et al. , 1997],extent that the MODIS climatology does. [ 11 ] The standarduse the optional aerosol climatology. These simulations are

Wild, Oliver; Prather, Michael J

2006-01-01T23:59:59.000Z

372

CFD Simulation of Riser VIV  

E-Print Network [OSTI]

jsjj , ?? ??? ? +?= m DB s?2 , 1=C , Eq. (13) is simplified as 0** 2 =++ CGBGA , and the amplification factor G is given by: A ACBBG 2 42 2,1 ???= . 17 For the special case of 0=sD and 0=w (i.e., Tj = const), the present... OF TABLES .................................................................................................... xx CHAPTER I INTRODUCTION AND LITERATURE REVIEW............................ 1 II VIV SIMULATION TECHNIQUES...

Huang, Zhiming

2012-07-16T23:59:59.000Z

373

Modeling Molecular Dynamics from Simulations  

SciTech Connect (OSTI)

Many important processes in biology occur at the molecular scale. A detailed understanding of these processes can lead to significant advances in the medical and life sciences. For example, many diseases are caused by protein aggregation or misfolding. One approach to studying these systems is to use physically-based computational simulations to model the interactions and movement of the molecules. While molecular simulations are computationally expensive, it is now possible to simulate many independent molecular dynamics trajectories in a parallel fashion by using super- or distributed- computing methods such as Folding@Home or Blue Gene. The analysis of these large, high-dimensional data sets presents new computational challenges. In this seminar, I will discuss a novel approach to analyzing large ensembles of molecular dynamics trajectories to generate a compact model of the dynamics. This model groups conformations into discrete states and describes the dynamics as Markovian, or history-independent, transitions between the states. I will discuss why the Markovian state model (MSM) is suitable for macromolecular dynamics, and how it can be used to answer many interesting and relevant questions about the molecular system. I will also discuss many of the computational and statistical challenges in building such a model, such as how to appropriately cluster conformations, determine the statistical reliability, and efficiently design new simulations.

Hinrichs, Nina Singhal (University of Chicago) [University of Chicago

2009-01-28T23:59:59.000Z

374

Radiation transport calculations and simulations  

Science Journals Connector (OSTI)

......obtain with good accuracy. The water content can affect critically...has a density variable with atmospheric pressure. In general, these...uniform pseudo-random number generator. ACM T. Model. Comput...Muraro S., Sala P. R. Atmospheric muon simulation using the......

A. Fassò; A. Ferrari; P. R. Sala

2009-11-01T23:59:59.000Z

375

Quantum simulation I. M. Georgescu  

E-Print Network [OSTI]

, and therefore, would be easier to construct. A number of quantum systems such as neutral atoms, ions, polar, Saitama, 351-0198, Japan and Qatar Environment and Energy Research Institute, Doha, Qatar Franco Nori CEMS, high-energy physics, atomic physics, quantum chemistry, and cosmology. Quantum simulation could

Nori, Franco

376

An advanced fuel cell simulator  

E-Print Network [OSTI]

of Fuel Cells ...................... 4 D. Fuel Cell Power Plant ..................... 4 E. Challenges in Fuel Cell Development ............ 5 F. Previous Work ......................... 6 G. Solar Array Simulators .................... 8 H. Battery... ............................. 54 28 Under-voltage Fault ........................... 55 1 CHAPTER I INTRODUCTION The depleting fossil fuel resources and increasing pollution are leading to the research and development of alternate energy generation techniques like fuel cells...

Acharya, Prabha Ramchandra

2005-11-01T23:59:59.000Z

377

Xyce parallel electronic simulator design.  

SciTech Connect (OSTI)

This document is the Xyce Circuit Simulator developer guide. Xyce has been designed from the 'ground up' to be a SPICE-compatible, distributed memory parallel circuit simulator. While it is in many respects a research code, Xyce is intended to be a production simulator. As such, having software quality engineering (SQE) procedures in place to insure a high level of code quality and robustness are essential. Version control, issue tracking customer support, C++ style guildlines and the Xyce release process are all described. The Xyce Parallel Electronic Simulator has been under development at Sandia since 1999. Historically, Xyce has mostly been funded by ASC, the original focus of Xyce development has primarily been related to circuits for nuclear weapons. However, this has not been the only focus and it is expected that the project will diversify. Like many ASC projects, Xyce is a group development effort, which involves a number of researchers, engineers, scientists, mathmaticians and computer scientists. In addition to diversity of background, it is to be expected on long term projects for there to be a certain amount of staff turnover, as people move on to different projects. As a result, it is very important that the project maintain high software quality standards. The point of this document is to formally document a number of the software quality practices followed by the Xyce team in one place. Also, it is hoped that this document will be a good source of information for new developers.

Thornquist, Heidi K.; Rankin, Eric Lamont; Mei, Ting; Schiek, Richard Louis; Keiter, Eric Richard; Russo, Thomas V.

2010-09-01T23:59:59.000Z

378

Using HLA and Grid for Distributed Multiscale Simulations  

E-Print Network [OSTI]

) and hydro dynamics (simulation of collisions - in micro scale). Combining simulations of different scale

Amsterdam, Universiteit van

379

Airborne Observations of Natural Radioactivity  

Science Journals Connector (OSTI)

... al. on cosmic rays; (2) the results of the direct determination of the radon content of free atmosphere at different altitudes made as early as 1928 by Wigand and ... in a series of airplane measurements:

F. B?HOUNEK

1966-03-26T23:59:59.000Z

380

Predictive Simulation | Department of Energy  

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

Predictive Predictive Simulation Predictive Simulation Empirical To First Principle Models Computing tools currently used in nuclear industry and regulatory practice are based primarily on empirical math models to approximate, or fit, existing experimental data. Many have a pedigree reaching back to the 1970s and 1980s and were designed to support decision making and evaluate everything from behavior of individual fuel pellets to severe accident scenarios for an entire power plant. Programs like SAPHIRE, FRAPCON, RELAP5, and MELCOR are just a few examples of current computing tools used in the regulation and operation of nuclear power plants. While these conventional tools have been updated for today's technology, they still suffer from limitations of their original

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


381

NUMERICAL SIMULATIONS OF CHROMOSPHERIC MICROFLARES  

SciTech Connect (OSTI)

With gravity, ionization, and radiation being considered, we perform 2.5 dimensional (2.5D) compressible resistive magnetohydrodynamic (MHD) simulations of chromospheric magnetic reconnection using the CIP-MOCCT scheme. The temperature distribution of the quiet-Sun atmospheric model VALC and the helium abundance (10%) are adopted. Our 2.5D MHD simulation reproduces qualitatively the temperature enhancement observed in chromospheric microflares. The temperature enhancement DELTAT is demonstrated to be sensitive to the background magnetic field, whereas the total evolution time DELTAt is sensitive to the magnitude of the anomalous resistivity. Moreover, we found a scaling law, which is described as DELTAT/DELTAt {approx} n{sub H} {sup -1.5} B {sup 2.1}eta{sub 0} {sup 0.88}. Our results also indicate that the velocity of the upward jet is much greater than that of the downward jet, and the X-point may move up or down.

Jiang, R. L.; Fang, C.; Chen, P. F., E-mail: fangc@nju.edu.c [Department of Astronomy, Nanjing University, Nanjing 210093 (China)

2010-02-20T23:59:59.000Z

382

Simulation Research Group, LBNL, USA  

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

* T. Hong () Simulation Research Group, LBNL, USA e-mail: thong@lbl.gov Building Energy Benchmarking between the United States and China: Methods and Challenges Tianzhen Hong 1,* , Le Yang 2 , Jianjun Xia 2 , Wei Feng 1 1 Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720, USA 2 Tsinghua University, Beijing 100084, China Abstract. Currently, buildings in the U.S. account for more than 40% of total primary energy. In China the

383

Simulated Distillation for Biofuel Analysis  

Science Journals Connector (OSTI)

Simulated Distillation for Biofuel Analysis ... SimDis therefore can easily be used to classifiy novel biofuels, for example, also bidodiesel made of algae or novel oilseed, regarding boiling characteristics and quality. ... and potential of biofuels in the transport sector including types of biofuel, feedstocks and technologies and some of the possible socio-economic, environmental and political implications of the widespread use of biofuels in our society. ...

Christine Bachler; Sigurd Schober; Martin Mittelbach

2009-12-30T23:59:59.000Z

384

Modeling and Simulation for Safeguards  

SciTech Connect (OSTI)

The purpose of this talk is to give an overview of the role of modeling and simulation in Safeguards R&D and introduce you to (some of) the tools used. Some definitions are: (1) Modeling - the representation, often mathematical, of a process, concept, or operation of a system, often implemented by a computer program; (2) Simulation - the representation of the behavior or characteristics of one system through the use of another system, especially a computer program designed for the purpose; and (3) Safeguards - the timely detection of diversion of significant quantities of nuclear material. The role of modeling and simulation are: (1) Calculate amounts of material (plant modeling); (2) Calculate signatures of nuclear material etc. (source terms); and (3) Detector performance (radiation transport and detection). Plant modeling software (e.g. FACSIM) gives the flows and amount of material stored at all parts of the process. In safeguards this allow us to calculate the expected uncertainty of the mass and evaluate the expected MUF. We can determine the measurement accuracy required to achieve a certain performance.

Swinhoe, Martyn T. [Los Alamos National Laboratory

2012-07-26T23:59:59.000Z

385

Lattice Boltzmann simulations of complex fluids  

Science Journals Connector (OSTI)

......research-article Articles Lattice Boltzmann simulations of complex fluids...OX1 3NP, UK We discuss how lattice Boltzmann simulations can be used to model...binary and lamellar fluids. lattice Boltzmann|complex fluids|shear flow......

J. M. YEOMANS; ALEXANDER J. WAGNER

2000-10-01T23:59:59.000Z

386

Simulating control of the ankle joint  

E-Print Network [OSTI]

Computing environments such as Matlab that are conventionally used to simulate dynamics of rigid body systems can be used to model interactions between the system and its environment. However, creating these simulations ...

Vasquez, Rebecca (Rebecca Ann)

2012-01-01T23:59:59.000Z

387

Robot Paintings Evolved Using Simulated Robots  

Science Journals Connector (OSTI)

We describe our efforts to evolve robot paintings using simulated robots. Our evolutionary framework considers only the initial positions and initial directions of the simulated robots. Our fitness functions d...

Gary Greenfield

2006-01-01T23:59:59.000Z

388

Muon Simulation at the Daya Bay SIte  

E-Print Network [OSTI]

Muon simulation at the Daya Bay site Guan Mengyun ? Caowe simulated the underground muon background at the Daya Baysite. To get the sea-level muon ?ux parameteri- zation, a

Mengyun, Guan

2011-01-01T23:59:59.000Z

389

Interactive physically-based cloud simulation  

E-Print Network [OSTI]

computational fluid solver. This allows us to simulate the complex air motion that contributes to cloud formation in our atmosphere. Among the natural processes that we simulate are buoyancy, relative humidity, and condensation. Because we have built...

Overby, Derek Robert

2012-06-07T23:59:59.000Z

390

Computer simulation of neutron capture therapy.  

E-Print Network [OSTI]

Analytical methods are developed to simulate on a large digital computer the production and use of reactor neutron beams f or boron capture therapy of brain tumors. The simulation accounts for radiation dose distributions ...

Olson, Arne Peter

1967-01-01T23:59:59.000Z

391

Computer simulation of neutron capture therapy  

E-Print Network [OSTI]

Analytical methods are developed to simulate on a large digital computer the production and use of reactor neutron beams f or boron capture therapy of brain tumors. The simulation accounts for radiation dose distributions ...

Olson, Arne Peter

1967-01-01T23:59:59.000Z

392

Comprehensive Simulation Framework for Power System Operation  

Science Journals Connector (OSTI)

The Electric Power and Communication Synchronizing Simulator (EPOCHS) [13, 14...] has been the first approach to combine simulators for power system and communication networks. Here, the authors connected the two...

Sven Christian Müller; Hanno Georg…

2014-01-01T23:59:59.000Z

393

Parameters Identification for Motorcycle Simulator's Platform Characterization  

E-Print Network [OSTI]

Parameters Identification for Motorcycle Simulator's Platform Characterization L. Nehaoua H modeling and parameters identification of a motorcycle simulator's platform. This model begins with some (cars and motorcycles) is possible by taking in care some characteristics of land vehicles. Indeed

Paris-Sud XI, Université de

394

Simulating Complex Window Systems using BSDF Data  

E-Print Network [OSTI]

Daylighting, Design tools and methods INTRODUCTION Simulations enable designers and engineers to evaluate and select the best available window solutions

Konstantoglou, Maria

2011-01-01T23:59:59.000Z

395

Modellierung und Simulation der Direktverdampfung in Absorberrohren  

E-Print Network [OSTI]

Modelling and simulation of direct steam generation in the absorber tubes of solar thermal power plants vonModellierung und Simulation der Direktverdampfung in Absorberrohren solarthermischer Kraftwerke Verwendung des WENO Schemas. Zur Simulation wird die numerische L¨osung in einer Software unter C++ umgesetzt

Ábrahám, Erika

396

Simulation and Formal Analysis of Visual Attention  

E-Print Network [OSTI]

a simulation model for visual attention is discussed and formally analysed. The model is part of the design of the situation in the field. A case study is described in which the model is used to simulate a human subject these specifications. Keywords: Visual attention, ambient intelligence, cognitive modeling, simulation, philosophical

Treur, Jan

397

Comparing Aerodynamic Models for Numerical Simulation of  

E-Print Network [OSTI]

Comparing Aerodynamic Models for Numerical Simulation of Dynamics and Control of Aircraft and simulation of aircraft, yet other aerodynamics models exist that can provide more accurate results for certain simulations without a large increase in computational time. In this paper, sev- eral aerodynamics

Peraire, Jaime

398

Simulation levels of detail for plant motion  

E-Print Network [OSTI]

and determine the allowable error in the simulation of branch motion. This allows us to choose the appropriate simulation level of detail and we provide smooth transitions from level to level. Our level of detail approach affects only the simulation parameters...

Beaudoin, Jacob Michael

2013-02-22T23:59:59.000Z

399

Collaborative use & design of interactive simulations  

Science Journals Connector (OSTI)

Interactive simulations hold great potential as a communication vehicle capable of improving the usefulness of technology in education. While some benefit can be gained by simply using pre-built simulations, learners benefit most from designing all or ... Keywords: agents & intelligent systems, collaboration, end-user programming, interactive simulations, multimedia, use vs. design

Alexander Repenning; Andri Ioannidou; Jonathan Phillips

1999-12-01T23:59:59.000Z

400

September 23, 2011 Simulation for the Masses  

E-Print Network [OSTI]

does "leisure science" need simulation? Friday, September 23, 2011 #12;September 23, 2011 Uses networks Why does science need simulation? Friday, September 23, 2011 #12;September 23, 2011 UsesSeptember 23, 2011 Simulation for the Masses L. Felipe Perrone http

Perrone, Luiz Felipe

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

Simulation Technologies for Health Sciences Curriculum  

Science Journals Connector (OSTI)

In this paper we discuss the main elements of an approach to teach simulation discipline in a small university with an interdisciplinary specialization in pharmaceutics, biology, health sciences, and computer science which are combined into a health ... Keywords: Simulation, education, health science curriculum, interdisciplinary approach, problem-solving skills reinforcement, simulation technology

Anatoly Kurkovsky

2006-11-01T23:59:59.000Z

402

Software Architecture for Object-Oriented Simulation Modeling and Simulation Environments  

E-Print Network [OSTI]

Software Architecture for Object-Oriented Simulation Modeling and Simulation Environments: Case been a steady migration towards object-oriented modeling and simulation environments. There exist many issues besides use of a modeling and simulation approach and an object-oriented programming language

403

Nested-grid simulation of mercury over North America  

E-Print Network [OSTI]

middle), nested America. IPR simulation (bottom). TheSTD simulation (middle), nested IPR simulation (bottom). Thesimulation; Right panel: IPR nested-grid Fig. 3. Scatter

2012-01-01T23:59:59.000Z

404

ThermoElectric Power System Simulator (TEPSS) | Department of...  

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

ThermoElectric Power System Simulator (TEPSS) ThermoElectric Power System Simulator (TEPSS) It describes the tool ThermoElectric Power System Simulator (TEPSS) which enables...

405

Advanced Simulation Capability for Environmental Management (ASCEM) |  

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

Advanced Simulation Capability for Environmental Management (ASCEM) Advanced Simulation Capability for Environmental Management (ASCEM) Advanced Simulation Capability for Environmental Management (ASCEM) Advanced Simulation Capability for Environmental Management (ASCEM) ASCEM is being developed to provide a tool and approach to facilitate robust and standardized development of performance and risk assessments for cleanup and closure activities throughout the EM complex. The ASCEM team is composed of scientists from eight National Laboratories. This team is leveraging Department of Energy (DOE) investments in basic science and applied research including high performance computing codes developed through the Advanced Scientific Computing Research and Advanced Simulation & Computing programs as well as collaborating with the Offices of Science,

406

Autonomie Automotive Simulation Tool | Open Energy Information  

Open Energy Info (EERE)

Autonomie Automotive Simulation Tool Autonomie Automotive Simulation Tool Jump to: navigation, search Tool Summary LAUNCH TOOL Name: Autonomie Automotive Simulation Tool Agency/Company /Organization: Argonne National Laboratory Focus Area: Economic Development, Vehicles Phase: Create a Vision Topics: Pathways analysis Resource Type: Software/modeling tools User Interface: Desktop Application Website: www.transportation.anl.gov/modeling_simulation/PSAT/autonomie.html OpenEI Keyword(s): Energy Efficiency and Renewable Energy (EERE) Tools Language: English References: Autonomie[1] Rapidly evaluate new powertrain and propulsion technologies for improving fuel economy through virtual design and analysis in a math-based simulation environment. Argonne has developed a new tool, called Autonomie, to accelerate the

407

Simulation of Radon Transport in Geothermal Reservoirs  

SciTech Connect (OSTI)

Numerical simulation of radon transport is a useful adjunct in the study of radon as an in situ tracer of hydrodynamic and thermodynamic numerical model has been developed to assist in the interpretation of field experiments. The model simulates transient response of radon concentration in wellhead geofluid as a function of prevailing reservoir conditions. The radon simulation model has been used to simulate radon concentration response during production drawdown and two flowrate transient tests in vapor-dominated systems. Comparison of model simulation with experimental data from field tests provides insight in the analysis of reservoir phenomena such as propagation of boiling fronts, and estimates of reservoir properties of porosity and permeability thickness.

Semprini, Lewis; Kruger, Paul

1983-12-15T23:59:59.000Z

408

Development of an Improved Permeability Modification Simulator  

SciTech Connect (OSTI)

This report describes the development of an improved permeability modification simulator performed jointly by BDM Petroleum Technologies and Schlumberger Dowell under a cooperative research and development agreement (CRADA) with the US Department of Energy. The improved simulator was developed by modifying NIPER's PC-GEL permeability modification simulator to include a radial model, a thermal energy equation, a wellbore simulator, and a fully implicit time-stepping option. The temperature-dependent gelation kinetics of a delayed gel system (DGS) is also included in the simulator.

Gao, H.W.; Elphnick, J.

1999-03-09T23:59:59.000Z

409

Advanced Modeling & Simulation | Department of Energy  

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

Advanced Modeling & Simulation Advanced Modeling & Simulation Advanced Modeling & Simulation Advanced Modeling & Simulation ADVANCING THE STATE OF THE ART Innovation advances science. Historically, innovation resulted almost exclusively from fundamental theories combined with observation and experimentation over time. With advancements in engineering, computing power and visualization tools, scientists from all disciplines are gaining insights into physical systems in ways not possible with traditional approaches alone. Modeling and simulation has a long history with researchers and scientists exploring nuclear energy technologies. In fact, the existing fleet of currently operating reactors was licensed with computational tools that were produced or initiated in the 1970s. Researchers and scientists in

410

Simulations of pulsar wind formation  

E-Print Network [OSTI]

We present initial results of the first self-consistent numerical model of the outer magnetosphere of a pulsar. By using the relativistic ``particle-in-cell'' method with special boundary conditions to represent plasma dynamics in 3D, we are able to follow magnetospheric plasma through the light cylinder into the wind zone for arbitrary magnetic inclination angles. For aligned rotators we confirm the ``disk-dome'' charge-separated structure of the magnetosphere and find that this configuration is unstable to a 3D nonaxisymmetric diocotron instability. This instability allows plasma to move across the field lines and approach the corotating Goldreich-Julian solution within several rotation periods. For oblique rotators formation of the spiral ``striped wind'' in the equatorial direction is demonstrated and the acceleration of the wind and its magnetization is discussed. We find that the wind properties vary with stellar latitude; however, whether injection conditions at the pulsar are responsible for the observed jet-equator geometry of Crab and Vela is currently under investigation. We also comment on the electrodynamics of the simulated magnetospheres, their current closure, and future simulations.

Anatoly Spitkovsky; Jonathan Arons

2002-01-22T23:59:59.000Z

411

Simulated nuclear reactor fuel assembly  

DOE Patents [OSTI]

An apparatus for electrically simulating a nuclear reactor fuel assembly. It includes a heater assembly having a top end and a bottom end and a plurality of concentric heater tubes having electrical circuitry connected to a power source, and radially spaced from each other. An outer target tube and an inner target tube is concentric with the heater tubes and with each other, and the outer target tube surrounds and is radially spaced from the heater tubes. The inner target tube is surrounded by and radially spaced from the heater tubes and outer target tube. The top of the assembly is generally open to allow for the electrical power connection to the heater tubes, and the bottom of the assembly includes means for completing the electrical circuitry in the heater tubes to provide electrical resistance heating to simulate the power profile in a nuclear reactor. The embedded conductor elements in each heater tube is split into two halves for a substantial portion of its length and provided with electrical isolation such that each half of the conductor is joined at one end and is not joined at the other end.

Berta, V.T.

1993-04-06T23:59:59.000Z

412

Benchmarking ICRF simulations for ITER  

SciTech Connect (OSTI)

Abstract Benchmarking of full-wave solvers for ICRF simulations is performed using plasma profiles and equilibria obtained from integrated self-consistent modeling predictions of four ITER plasmas. One is for a high performance baseline (5.3 T, 15 MA) DT H-mode plasma. The others are for half-field, half-current plasmas of interest for the pre-activation phase with bulk plasma ion species being either hydrogen or He4. The predicted profiles are used by seven groups to predict the ICRF electromagnetic fields and heating profiles. Approximate agreement is achieved for the predicted heating power partitions for the DT and He4 cases. Profiles of the heating powers and electromagnetic fields are compared.

R. V. Budny, L. Berry, R. Bilato, P. Bonoli, M. Brambilla, R.J. Dumont, A. Fukuyama, R. Harvey, E.F. Jaeger, E. Lerche, C.K. Phillips, V. Vdovin, J. Wright, and members of the ITPA-IOS

2010-09-28T23:59:59.000Z

413

Simulation of Siberian tiger vocalization  

Science Journals Connector (OSTI)

The excised larynx of a Siberian tiger which died of natural causes was studied on a laboratory bench. Pressure?flow relations were determined as well as modes of vibration of the vocal pads. In addition CT scans of the animal were made available (from previous health examinations) which allowed the vocal?tract airway to be quantified. The larynx and vocal tract?data were then used to simulate the sound production of the animal. Results showed that multiple tissue modes are excited to produce a tiger roar and that the production is highly efficient for aerodynamic to acoustic energy conversion. Scaling factors for linear dimensions of the larynx and vocal tract are derived to compare the phonation of this large mammal to human phonation.

2006-01-01T23:59:59.000Z

414

International symposium on fuel rod simulators: development and application  

SciTech Connect (OSTI)

Separate abstracts are included for each of the papers presented concerning fuel rod simulator operation and performance; simulator design and evaluation; clad heated fuel rod simulators and fuel rod simulators for cladding investigations; fuel rod simulator components and inspection; and simulator analytical modeling. Ten papers have previously been input to the Energy Data Base.

McCulloch, R.W. (comp.)

1981-05-01T23:59:59.000Z

415

Emulation to simulate low resolution atmospheric data  

SciTech Connect (OSTI)

Climate simulations require significant compute power, they are complex and therefore it is time consuming to simulate them. We have developed an emulator to simulate unknown climate datasets. The emulator uses stochastic collocation and multi-dimensional in- terpolation to simulate the datasets. We have used the emulator to determine various physical quantities such as temperature, short and long wave cloud forcing, zonal winds etc. The emulation gives results which are very close to those obtained by simulations. The emulator was tested on 2 degree atmospheric datasets. The work evaluates the pros and cons of evaluating the mean first and inter- polating and vice versa. To determine the physical quantities, we have assumed them to be a function of time, longitude, latitude and a random parameter. We have looked at parameters that govern high stable clouds, low stable clouds, timescale for convection etc. The emulator is especially useful as it requires negligible compute times when compared to the simulation itself.

Hebbur Venkata Subba Rao, Vishwas [ORNL; Archibald, Richard K [ORNL; Evans, Katherine J [ORNL

2012-08-01T23:59:59.000Z

416

Model Validation with Hybrid Dynamic Simulation  

SciTech Connect (OSTI)

Abstract—Model validation has been one of the central topics in power engineering studies for years. As model validation aims at obtaining reasonable models to represent actual behavior of power system components, it has been essential to validate models against actual measurements or known benchmark behavior. System-wide model simulation results can be compared with actual recordings. However, it is difficult to construct a simulation case for a large power system such as the WECC system and to narrow down to problematic models in a large system. Hybrid dynamic simulation with its capability of injecting external signals into dynamic simulation enables rigorous comparison of measurements and simulation in a small subsystem of interest. This paper presents such a model validation methodology with hybrid dynamic simulation. Two application examples on generator and load model validation are presented to show the validity of this model validation methodology. This methodology is further extended for automatic model validation and dichotomous subsystem model validation.

Huang, Zhenyu; Kosterev, Dmitry; Guttromson, Ross T.; Nguyen, Tony B.

2006-06-18T23:59:59.000Z

417

Retrieval of Aerosol Optical Depth in Vicinity of Broken Clouds from Reflectance Ratios: Case Study  

SciTech Connect (OSTI)

A recently developed reflectance ratio (RR) method for the retrieval of aerosol optical depth (AOD) is evaluated using extensive airborne and ground-based data sets collected during the Cloud and Land Surface Interaction Campaign (CLASIC) and the Cumulus Humilis Aerosol Processing Study (CHAPS), which took place in June 2007 over the U.S. Department of Energy (DOE) Atmospheric Radiation Measurement (ARM) Southern Great Plains site. A detailed case study is performed for a field of single-layer shallow cumuli observed on June 12, 2007. The RR method is applied to retrieve the spectral values of AOD from the reflectance ratios measured by the MODIS Airborne Simulator (MAS) for two pairs of wavelengths (660 and 470 nm and 870 and 470 nm) collected at a spatial resolution of 0.05 km. The retrieval is compared with an independent AOD estimate from three ground-based Multi-filter Rotating Shadowband Radiometers (MFRSRs). The interpolation algorithm that is used to project MFRSR point measurements onto the aircraft flight tracks is tested using AOD derived from NASA Langley High Spectral Resolution Lidar (HSRL). The RR AOD estimates are in a good agreement (within 5%) with the MFRSR-derived AOD values for the 660-nm wavelength. The AODs obtained from MAS reflectance ratios overestimate those derived from MFRSR measurements by 15-30% for the 470-nm wavelength and underestimate the 870-nm AOD by the same amount.

Kassianov, Evgueni I.; Ovchinnikov, Mikhail; Berg, Larry K.; McFarlane, Sally A.; Flynn, Connor J.; Ferrare, Richard; Hostetler, Chris A.; Alexandrov, Mikhail

2010-10-06T23:59:59.000Z

418

Utility System Simulation: A Nonlinear Approach  

E-Print Network [OSTI]

UTILITY SYSTEM SIMULATION: A NONLINEAR APPROACH STEPHEN R. DELK, P.E. Owner The MESA Company The Woodlands, Texas ABSTRACT Computer simulation of plant utility systems allows an engineer to rapidly I) analyze operation changes, 2...) analyze design changes, and 3) optimize the steam/electric system for the lowest operating cost. MESA (Modular Energy System Analyzer) is a PC-based computer program that can be configured to accurately simulate plant utility systems. MESA uses a...

Delk, S. R.

419

Explosive simulants for testing explosive detection systems  

DOE Patents [OSTI]

Explosives simulants that include non-explosive components are disclosed that facilitate testing of equipment designed to remotely detect explosives. The simulants are non-explosive, non-hazardous materials that can be safely handled without any significant precautions. The simulants imitate real explosives in terms of mass density, effective atomic number, x-ray transmission properties, and physical form, including moldable plastics and emulsions/gels.

Kury, John W. (Danville, CA); Anderson, Brian L. (Lodi, CA)

1999-09-28T23:59:59.000Z

420

Development and Characterization of Boehmite Component Simulant  

SciTech Connect (OSTI)

According to Bechtel National Inc.’s (BNI’s) Test Specification 24590-PTF-TSP-RT-06-006, Rev 0, “Simulant Development to Support the Development and Demonstration of Leaching and Ultrafiltration Pretreatment Processes,” simulants for boehmite, gibbsite, and filtration are to be developed that can be used in subsequent bench and integrated testing of the leaching/filtration processes. These simulants will then be used to demonstrate the leaching process and to help refine processing conditions that may impact safety basis considerations (Smith 2006). This report documents the results of the boehmite simulant development.

Russell, Renee L.; Peterson, Reid A.; Smith, Harry D.; Rinehart, Donald E.; Aker, Pamela M.; Buck, Edgar C.

2009-03-10T23:59:59.000Z

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

Improved Solvers for Advanced Engine Combustion Simulation  

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

Volvo; multi-zone cycle simulation, OpenFOAM model development Bosch; High Performance Computing of HCCISI transition Delphi; direct injection GE Research; new...

422

Density Functional Theory (DFT) Simulated Annealing (SA)  

E-Print Network [OSTI]

. . . . . . . . 9 2009 #12;! " # $ % & - " # $ %' ! " # # $ % & # ( # " ) Density Functional Theory) % Lattice-Boltzmann (LBM) #12;! " # $ % & - " # $ %' ! " # # $ % & # ( # " ) Density Functional Theory (DFT;! " # $ % & - " # $ %' ! " # # $ % & # ( # " ) Density Functional Theory (DFT) Simulated Annealing (SA) Monte Carlo &$ ' ' (GCMC

423

Incorporating LCA tools in integrated simulation environments  

E-Print Network [OSTI]

and Meil, J. K. , "ATHENA™: An LCA Decision Support Tool -in the Proceedings. INCORPORATING LCA TOOLS IN INTEGRATEDof Energy. INCORPORATING LCA TOOLS IN INTEGRATED SIMULATION

Pal, Vineeta; Papamichael, Konstantinos; Bourassa, Norman; Loffeld, John J.

2001-01-01T23:59:59.000Z

424

Nuclear Systems Modeling, Simulation & Validation | Nuclear Science...  

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

Research Areas Fuel Cycle Science & Technology Fusion Nuclear Science Isotope Development and Production Nuclear Security Science & Technology Nuclear Systems Modeling, Simulation...

425

Sandia National Laboratories: Computational Fluid Dynamics Simulations...  

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

Canal, Yakima Washington Sandia Publishes Five Reports on the Environmental Effects of Wave-Energy Converters Computational Fluid Dynamics Simulations Provide Insight for Rotor...

426

Large-eddy simulations of scramjet engines.  

E-Print Network [OSTI]

??The main objective of this dissertation is to develop large-eddy simulation (LES) based computational tools for supersonic inlet and combustor design. In the recent past,… (more)

Koo, Heeseok

2011-01-01T23:59:59.000Z

427

LLNL-CONF-555171 Simulation Tools  

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

government or Lawrence Livermore National Security, LLC, and shall not be used for advertising or product endorsement purposes. Simulation Tools for Modeling Thermal Spallation...

428

Simulations to save time, money, and lives  

SciTech Connect (OSTI)

The Laboratory`s Conflict Simulation Laboratory (CSL) has been developing computerized programs to simulate combat and other conflicts since 1974. All branches of the military use these systems for training purposes and to prepare for operations as diverse as the 1989 invasion of Panama and peacekeeping in Somalia. The CSL is presently continuing development of the Joint Tactical Simulation (JTS) and recently began work on the Joint Conflict and Tactical Simulation (JCATS) program for the Joint Chiefs of Staff. The Army is still using the CSL`s first model, Janus.

Sackett, D.E. [Lawrence Livermore National Lab., CA (United States)

1996-11-01T23:59:59.000Z

429

MOLECULAR DYNAMICS SIMULATIONS OF NANOPARTICLE INTERACTIONS.  

E-Print Network [OSTI]

??Molecular dynamics simulations using the Embedded Atom Method were performed to describe the interparticle behavior of two single crystal spherical nickel nanoparticles during compaction based… (more)

Stone, Tonya Williams

2006-01-01T23:59:59.000Z

430

Towards Industrial Strength Discrete Optimization via Simulation...  

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

Towards Industrial Strength Discrete Optimization via Simulation: Multi-Fidelity Optimization and Data-Driven Robustness Event Sponsor: Mathematics and Computing Science - LANS...

431

MOOSE simulating nuclear reactor CRUD buildup  

SciTech Connect (OSTI)

This simulation uses multiple physical models to show how the buildup of boron deposits on reactor fuel can affect performance and the reactor's power profile.

None

2014-02-06T23:59:59.000Z

432

Dynameomics Database of Molecular Dynamics Simulations Project...  

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

in determining protein behavior and function. Accomplishments: Over 11,000 protein folding simulations are now available in the world's largest public database of protein...

433

Sandia National Laboratories: Offshore Wind Energy Simulation...  

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

Offshore Wind Energy Simulation Toolkit Sandia Vertical-Axis Wind-Turbine Research Presented at Science of Making Torque from Wind Conference On July 8, 2014, in Computational...

434

Dynamic Simulators | netl.doe.gov  

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

to Develop Dynamic Simulators for Supercritical Pulverized Coal and Natural Gas Combined Cycle Power Plants A screen shot of the new generic supercritical once-through...

435

Posters Comparison Between General Circulation Model Simulation...  

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

triangulation interpolation. For the GCM simulation, the monthly mean surface latent heat flux is sampled at the grid points closest to the buoy sites, then interpolated the...

436

Multidimensional simulation and chemical kinetics development...  

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

Developing chemical kinetic mechanisms and applying them to simulating engine combustion processes. deer09aceves.pdf More Documents & Publications Chemical Kinetic Research on...

437

Molecular dynamics simulation studies of electrolytes andelectrolyte...  

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

Merit Review and Peer Evaluation Meeting, May 18-22, 2009 -- Washington D.C. es40smith.pdf More Documents & Publications Molecular Dynamics Simulation Studies of...

438

Simulation-based scheduling for parcel consolidation terminals: a comparison of iterative improvement and simulated annealing  

Science Journals Connector (OSTI)

This research explores the application of a simulation-based scheduling algorithm to generate unload schedules for processing feeder trailers in a parcel consolidation terminal. The study compares the performance of iterative improvement and simulated ...

Douglas L. McWilliams

2005-12-01T23:59:59.000Z

439

Facebook or Fakebook? The effects of simulated mobile applications on simulated mobile networks  

Science Journals Connector (OSTI)

The credibility of mobile ad hoc network simulations depends on accurate characterisations of user behaviour, e.g., mobility and application usage. If simulated nodes communicate at different rates to real nodes, or move in an unrealistic fashion, this ... Keywords: Opportunistic networks, Privacy, Simulation, Social networks, Social-network routing

Iain Parris; Fehmi Ben Abdesslem; Tristan Henderson

2014-01-01T23:59:59.000Z

440

Magnetohydrodynamic Turbulence Simulations on the Earth Simulator Using the Lattice Boltzmann  

E-Print Network [OSTI]

Magnetohydrodynamic Turbulence Simulations on the Earth Simulator Using the Lattice Boltzmann Method ABSTRACT Highly optimized large-scale lattice Boltzmann simulations of 3D magnetohydrodynamic-Krylov algorithms. Lattice Boltzmann (LB) schemes are an alternate approach that circumvent the resolution problems

Oliker, Leonid

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

Radial Alignment in Simulated Clusters  

E-Print Network [OSTI]

Observational evidence for the radial alignment of satellites with their dark matter host has been accumulating steadily in the past few years. The effect is seen over a wide range of scales, from massive clusters of galaxies down to galaxy-sized systems, yet the underlying physical mechanism has still not been established. To this end, we have carried out a detailed analysis of the shapes and orientations of dark matter substructures in high-resolution N-body cosmological simulations. We find a strong tendency for radial alignment of the substructure with its host halo: the distribution of halo major axes is very anisotropic, with the majority pointing towards the center of mass of the host. The alignment peaks once the sub-halo has passed the virial radius of the host for the first time, but is not subsequently diluted, even after the halos have gone through as many as four pericentric passages. This evidence points to the existence of a very rapid dynamical mechanism acting on these systems and we argue that tidal torquing throughout their orbits is the most likely candidate.

Maria J. Pereira; Greg L. Bryan; Stuart P. D. Gill

2008-01-23T23:59:59.000Z

442

Quantum Simulations for Dense Matter  

SciTech Connect (OSTI)

High pressure systems are important, for example, to understand the interiors of giant planets (Jupiter and Saturn), for experiments at NIF (the National Ignition Facility at Livermore) related to inertially confined fusion and for other interests of DOE. In this project, we are developing innovative simulation methods (Quantum Monte Carlo methods) to allow more accurate calculation of properties of systems under extreme conditions of pressure and temperature. These methods can use the power of current day supercomputers made of very many processors, starting from the basic equations of physics to model quantum phenomena important at the microscopic scale. During the grant period, we have settled two important questions of the physics of hydrogen and helium under extreme conditions. We have found the pressures and temperatures when hydrogen and helium mix together; this is important to understand the difference of the interiors of the planets Jupiter and Saturn. Secondly, we have shown that there exists a sharp transition as a function of pressure between molecular and atomic liquid hydrogen at temperatures below 2000K. This prediction can be confirmed with high pressure experiments.

Ceperley, David M

2010-06-07T23:59:59.000Z

443

Simulating Collisions for Hydrokinetic Turbines  

SciTech Connect (OSTI)

Evaluations of blade-strike on an axial-flow Marine Hydrokinetic turbine were conducted using a conventional methodology as well as an alternative modeling approach proposed in the present document. The proposed methodology integrates the following components into a Computa- tional Fluid Dynamics (CFD) model: (i) advanced eddy-resolving flow simulations, (ii) ambient turbulence based on field data, (iii) moving turbine blades in highly transient flows, and (iv) Lagrangian particles to mimic the potential fish pathways. The sensitivity of blade-strike prob- ability to the following conditions was also evaluated: (i) to the turbulent environment, (ii) to fish size and (iii) to mean stream flow velocity. The proposed methodology provided fraction of collisions and offered the capability of analyzing the causal relationships between the flow envi- ronment and resulting strikes on rotating blades. Overall, the conventional methodology largely overestimates the probability of strike, and lacks the ability to produce potential fish and aquatic biota trajectories as they interact with the rotating turbine. By using a set of experimental corre- lations of exposure-response of living fish colliding on moving blades, the occurrence, frequency and intensity of the particle collisions was next used to calculate the survival rate of fish crossing the MHK turbine. This step indicated survival rates always greater than 98%. Although the proposed CFD framework is computationally more expensive, it provides the advantage of evaluating multiple mechanisms of stress and injury of hydrokinetic turbine devices on fish.

Richmond, Marshall C.; Romero Gomez, Pedro DJ; Rakowski, Cynthia L.

2013-10-01T23:59:59.000Z

444

Transient simulation of absorption machines  

SciTech Connect (OSTI)

This paper presents a model for a water-cooled Lithium-Bromide/water absorption chiller and predicts its transient response both during the start-up phase and during the shutoff period. The simulation model incorporates such influencing factors as the thermodynamic properties of the working fluid, the absorbent, the heat-transfer configuration of different components of the chiller and related physical data. The time constants of different components are controlled by a set of key parameters that have been identified in this study. The results show a variable but at times significant amount of time delay before the chiller capacity gets close to its steady-state value. The model is intended to provide an insight into the mechanism of build-up to steady-state performance. By recognizing the significant factors contributing to transient degradation, steps can be taken to reduce such degradation. The evaluation of the residual capacity in the shut-off period will yield more realistic estimates of chiller COP for a chiller satisfying dynamic space cooling load.

Anand, D.K.; Allen, R.W.; Kumar, B.

1982-08-01T23:59:59.000Z

445

Transient simulation of absorption machines  

SciTech Connect (OSTI)

This paper presents a model for a water-cooled Lithium-Bromide/water absorption chiller and predicts its transient response both during the start-up phase and during the shutoff period. The simulation model incorporates such influencing factors as the thermodynamic properties of the working fluid, the absorbent, the heat-transfer configuration of different components of the chiller and related physical data. The time constants of different components are controlled by a set of key parameters that have been identified in this study. The results show a variable but at times significant amount of time delay before the chiller capacity gets close to its steadystate value. The model is intended to provide an insight into the mechanism of build-up to steady-state performance. By recognizing the significant factors contributing to transient degradation, steps can be taken to reduce such degradation. The evaluation of the residual capacity in the shut-off period will yield more realistic estimates of chiller COP for a chiller satisfying dynamic space cooling load.

Anand, D.K.; Allen, R.W.; Kumar, B.

1982-08-01T23:59:59.000Z

446

UNDERSTANDING RETAIL PRODUCTIVITY BY SIMULATING MANAGEMENT PRACTICES  

E-Print Network [OSTI]

UNDERSTANDING RETAIL PRODUCTIVITY BY SIMULATING MANAGEMENT PRACTICES Peer-Olaf Siebers1 , Uwe and simulation to investigate a set of problems in a retail context. Specifically, we are working to understand the relationship between human resource management practices and retail productivity. Despite the fact we

Aickelin, Uwe

447

Seminaire Farman -2 juin 2010 Simulation + Incertitude  

E-Print Network [OSTI]

S´eminaire Farman - 2 juin 2010 Simulation + Incertitude = Model Checking Laurent Fribourg LSV 2010 - S´eminaire Farman 1 / 33 #12;Plan Plan 1 Verification in presence of Uncertainty 2 Numerical Fribourg Lsv - ENS Cachan () SIMULATION + INCERTITUDE = MODEL CHECKING2 juin 2010 - S´eminaire Farman 2

448

Detonation Structure Simulation with AMROC Ralf Deiterding  

E-Print Network [OSTI]

Detonation Structure Simulation with AMROC Ralf Deiterding California Institute of Technology, 1200 detonation waves. But the accurate approximation of realistic detonations is extremely de- manding, because in simulating multi- dimensional detonations with detailed and highly stiff chemical kinetics on recent parallel

Barr, Al

449

The SimCore/Alpha Functional Simulator  

Science Journals Connector (OSTI)

We have developed a function-level processor simulator, SimCore/Alpha Functional Simulator Version 2.0 (SimCore Version 2.0), for processor architecture research and processor education. This paper describes the design and implementation of SimCore Version ...

Kenji Kise; Takahiro Katagiri; Hiroki Honda; Toshitsugu Yuba

2004-06-01T23:59:59.000Z

450

COMPOSABLE SIMULATION MODELS AND THEIR FORMAL VALIDATION  

E-Print Network [OSTI]

COMPOSABLE SIMULATION MODELS AND THEIR FORMAL VALIDATION CLAUDIA SZABO B. Eng., "POLITEHNICA and simulation, shared models are reused and as- sembled in various combinations to meet different user strings simplifies and facilitates automated syntactic verification and model discovery and selection. An

Teo, Yong-Meng

451

Computer Simulations Reveal Multiple Functions for Aromatic  

E-Print Network [OSTI]

Computer Simulations Reveal Multiple Functions for Aromatic Residues in Cellulase Enzymes NREL researchers use high-performance computing to demonstrate fundamental roles of aromatic residues in cellulase enzyme tunnels. National Renewable Energy Laboratory (NREL) computer simulations of a key indus- trial

452

Improved Simulation of Stabilizer Circuits Scott Aaronson #  

E-Print Network [OSTI]

Improved Simulation of Stabilizer Circuits Scott Aaronson # University of California, Berkeley---that is, a quantum circuit con­ sisting solely of CNOT, Hadamard, and phase gates---can be simulated e that stabilizer circuits are probably not even universal for classical computation. Third, we give e

Aaronson, Scott

453

Realistic Solar Convection Simulations Robert F. Stein  

E-Print Network [OSTI]

Realistic Solar Convection Simulations Robert F. Stein Michigan State University, East Lansing, MIAFG, Juliane Maries Vej 30, Dk­2100 Copenhagen �, Denmark Abstract. We report on realistic simulations of solar and intensity spectra, the p­mode excitation rate, and the depth of the convection zone. We describe how solar

Stein, Robert

454

Molecular Dynamics Simulations of Supported Pt Nanoclusters  

E-Print Network [OSTI]

¤Introduction and Background ¤Constructing a Physical Model ¤Details of the Simulation ¤Results and Conclusions · Petroleum reformation · Gasification of biomass for biofuels #12;Previous Investigation of NanoclustersMolecular Dynamics Simulations of Supported Pt Nanoclusters Jeffrey Moore #12;A Brief Outline

Washington at Seattle, University of - Department of Physics, Electroweak Interaction Research Group

455

Threedimensional numerical simulation for various geometries  

E-Print Network [OSTI]

Three­dimensional numerical simulation for various geometries of solid oxide fuel cells J.R. Ferguson 1 , J.M. Fiard 2 , and R. Herbin 3 Abstract A 3D mathematical model of a Solid Oxide Fuel Cell modelling and numerical simulation of natural gas­fed solid oxide cells (Solid Oxide Fuel Cell, SOFC

Herbin, Raphaèle

456

Discrete Optimization A simulated annealing approach  

E-Print Network [OSTI]

for the constrained and the unconstrained circular cutting problem based upon simulated annealing. We define an energyDiscrete Optimization A simulated annealing approach for the circular cutting problem Mhand Hifi corner of the initial rectangle. Such values of the energy correspond to configurations where pieces

Zissimopoulos, Vassilis

457

DEMAND SIMULATION FOR DYNAMIC TRAFFIC ASSIGNMENT  

E-Print Network [OSTI]

of the response of travelers to real-time pre- trip information. The demand simulator is an extension of dynamicDEMAND SIMULATION FOR DYNAMIC TRAFFIC ASSIGNMENT Constantinos Antoniou, Moshe Ben-Akiva, Michel Bierlaire, and Rabi Mishalani Massachusetts Institute of Technology, Cambridge, MA 02139 Abstract

Bierlaire, Michel

458

Investigation of light pipe simulation algorithms  

E-Print Network [OSTI]

and/or stochastic progressive photon mapping can be used in daylight simulations of interior of a room in a robust way with bounded memory consumption, while converging to the correct solution. To simulate the sky solution HOLIG- ILM [KDK08], and an implementation of path tracing. #12;ii #12;Summary (Danish) Emnet

459

Modeling and simulating electronic textile applications  

Science Journals Connector (OSTI)

This paper describes our design of a simulation environment for electronic textiles (e-textiles) and our experiences with that environment. This simulation environment, based upon Ptolemy II, enables us to model a diverse range of areas related to the ... Keywords: context awareness, electronic textiles, smart fabrics, wearable computing

Thomas Martin; Mark Jones; Joshua Edmison; Tanwir Sheikh; Zahi Nakad

2004-07-01T23:59:59.000Z

460

Numerical Simulation of Cooling Gas Injection Using  

E-Print Network [OSTI]

Numerical Simulation of Cooling Gas Injection Using Adaptive Multiscale Techniques Wolfgang Dahmen: finite volume method, film cooling, cooling gas injection, multiscale techniques, grid adaptation AMS@igpm.rwth-aachen.de (Thomas Gotzen) #12;Numerical simulation of cooling gas injection using adaptive multiscale techniques

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


461

SIMULATION OF RESIDENTIAL HVAC SYSTEM PERFORMANCE  

E-Print Network [OSTI]

1 LBNL-47622 SIMULATION OF RESIDENTIAL HVAC SYSTEM PERFORMANCE Walker, I., Siegel, J ..................................................... 9 #12;3 ABSTRACT In many parts of North America residential HVAC systems are installed outside of the simulations is that they are dynamic - which accounts for cyclic losses from the HVAC system and the effect

462

Atomistic Protein Folding Simulations on the  

E-Print Network [OSTI]

Atomistic Protein Folding Simulations on the Submillisecond Time Scale Using Worldwide Distributed Abstract: Atomistic simulations of protein folding have the potential to be a great complement. Biopolymers 68: 91­109, 2003 Keywords: atomistic protein folding; microsecond time scale; computer hardware

Snow, Christopher

463

Guest Editorial: ObjectOriented Simulation  

E-Print Network [OSTI]

Guest Editorial: Object�Oriented Simulation: Aspects of the Model Development Lifecycle John A Issue is the use of object�oriented concepts throughout the li� fecycle of software/model development of the object�oriented paradigm is to be fully realized in simulation. The papers in this Special Issue make

Miller, John A.

464

Whole Building Energy Simulation | Department of Energy  

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

Energy Simulation Energy Simulation Whole Building Energy Simulation October 16, 2013 - 4:39pm Addthis Whole building energy simulation, also referred to as energy modeling, can and should be incorporated early during project planning to provide energy impact feedback for which design considerations may be pursued. Whole building energy simulation software adequately assesses the interactions between complex building systems and equally complex schedules and utility rates structures for projects in specific locations throughout the world. Energy models incorporate actual building construction, internal load sources, and associated schedules using annual hourly weather data specific to the project location. These models can be used early in the design process when little information is known and updated, continually

465

NREL: Energy Storage - Modeling and Simulation  

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

Modeling and Simulation Modeling and Simulation Two NREL researchers are silhouetted in front of computer screens displaying thermal model images. NREL modeling and simulation experts use an extensive portfolio of validated tools to assess ES solutions for advanced vehicles. Photo by Dennis Schroeder, NREL/PIX 22009 Multi-physics simulation of energy storage (ES) devices provides a less expensive, faster, and more controlled alternative to in-lab testing in the early stages of research and development (R&D)-which eventually leads to longer lasting, dependable and powerful batteries. NREL is a recognized leader in systems-level thermal design, performance, lifespan, reliability, and safety modeling and simulation. The lab's 1-D and 3-D steady-state and transient multi-physics models are used to examine heat transfer,

466

House Simulation Protocols Report | Department of Energy  

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

Residential Buildings » Building America » House Simulation Residential Buildings » Building America » House Simulation Protocols Report House Simulation Protocols Report This image shows a cover of a report titled Building America House Simulation Protocols. The Building America logo is shown in the lower left corner of the report cover. Building America's House Simulation Protocols report is designed to assist researchers in tracking the progress of multiyear, whole-building energy reduction against research goals for new and existing homes. These protocols are preloaded into BEopt and use a consistent approach for defining a reference building, so that all projects can be compared to each other. The steps involved in conducting performance analysis include: Defining the appropriate reference building Various climate regions, house sizes, and house ages require slightly

467

Dynamic simulation of a reverse Brayton refrigerator  

SciTech Connect (OSTI)

A test refrigerator based on the modified Reverse Brayton cycle has been developed in the Chinese Academy of Sciences recently. To study the behaviors of this test refrigerator, a dynamic simulation has been carried out. The numerical model comprises the typical components of the test refrigerator: compressor, valves, heat exchangers, expander and heater. This simulator is based on the oriented-object approach and each component is represented by a set of differential and algebraic equations. The control system of the test refrigerator is also simulated, which can be used to optimize the control strategies. This paper describes all the models and shows the simulation results. Comparisons between simulation results and experimental data are also presented. Experimental validation on the test refrigerator gives satisfactory results.

Peng, N.; Xiong, L. Y.; Dong, B.; Liu, L. Q. [State Key Laboratory of Technologies in Space Cryogenic Propellants, Technical Institute of Physics and Chemistry, CAS, Beijing, 100190 (China); Lei, L. L.; Tang, J. C. [State Key Laboratory of Technologies in Space Cryogenic Propellants, Technical Institute of Physics and Chemistry, CAS, Beijing, 100190 China and Graduate University of Chinese Academy of Sciences, Beijing, 100190 (China)

2014-01-29T23:59:59.000Z

468

Method for simulating discontinuous physical systems  

DOE Patents [OSTI]

The mathematical foundations of conventional numerical simulation of physical systems provide no consistent description of the behavior of such systems when subjected to discontinuous physical influences. As a result, the numerical simulation of such problems requires ad hoc encoding of specific experimental results in order to address the behavior of such discontinuous physical systems. In the present invention, these foundations are replaced by a new combination of generalized function theory and nonstandard analysis. The result is a class of new approaches to the numerical simulation of physical systems which allows the accurate and well-behaved simulation of discontinuous and other difficult physical systems, as well as simpler physical systems. Applications of this new class of numerical simulation techniques to process control, robotics, and apparatus design are outlined.

Baty, Roy S. (Albuquerque, NM); Vaughn, Mark R. (Albuquerque, NM)

2001-01-01T23:59:59.000Z

469

A NEW GENERATION CHEMICAL FLOODING SIMULATOR  

SciTech Connect (OSTI)

The premise of this research is that a general-purpose reservoir simulator for several improved oil recovery processes can and should be developed so that high-resolution simulations of a variety of very large and difficult problems can be achieved using state-of-the-art computing and computers. Such a simulator is not currently available to the industry. The goal of this proposed research is to develop a new-generation chemical flooding simulator that is capable of efficiently and accurately simulating oil reservoirs with at least a million gridblocks in less than one day on massively parallel computers. Task 1 is the formulation and development of solution scheme, Task 2 is the implementation of the chemical module, and Task 3 is validation and application.

Gary A. Pope; Kamy Sepehrnoori; Mojdeh Delshad

2002-09-30T23:59:59.000Z

470

A NEW GENERATION CHEMICAL FLOODING SIMULATOR  

SciTech Connect (OSTI)

The premise of this research is that a general-purpose reservoir simulator for several improved oil recovery processes can and should be developed so that high-resolution simulations of a variety of very large and difficult problems can be achieved using state-of-the-art algorithms and computers. Such a simulator is not currently available to the industry. The goal of this proposed research is to develop a new-generation chemical flooding simulator that is capable of efficiently and accurately simulating oil reservoirs with at least a million gridblocks in less than one day on massively parallel computers. Task 1 is the formulation and development of solution scheme, Task 2 is the implementation of the chemical module, and Task 3 is validation and application. In this final report, we will detail our progress on Tasks 1 through 3 of the project.

Gary A. Pope; Kamy Sepehrnoori; Mojdeh Delshad

2005-01-01T23:59:59.000Z

471

3-D GRMHD Simulations of Generating Jets  

E-Print Network [OSTI]

We have performed a first fully 3-D GRMHD simulation with Schwarzschild black hole with a free falling corona. The initial simulation results show that a jet is created as in the previous simulations using the axisymmetric geometry with the mirror symmetry at the equator. However, the time to generate the jet is longer than in the 2-D axisymmetric simulations. We expect that due to the additional freedom in the azimuthal dimension without axisymmetry with respect to the z axis and reflection symmetry with respect to the equatorial plane, the dynamics of jet formation can be modified. Further simulations are required for the study of instabilities along the azimuthal direction such as accretion-eject instability

Nishikawa, K I; Shibata, K; Kudoh, T; Sol, H

2002-01-01T23:59:59.000Z

472

3-D GRMHD Simulations of Generating Jets  

E-Print Network [OSTI]

We have performed a first fully 3-D GRMHD simulation with Schwarzschild black hole with a free falling corona. The initial simulation results show that a jet is created as in the previous simulations using the axisymmetric geometry with the mirror symmetry at the equator. However, the time to generate the jet is longer than in the 2-D axisymmetric simulations. We expect that due to the additional freedom in the azimuthal dimension without axisymmetry with respect to the z axis and reflection symmetry with respect to the equatorial plane, the dynamics of jet formation can be modified. Further simulations are required for the study of instabilities along the azimuthal direction such as accretion-eject instability

K. -I. Nishikawa; S. Koide; K. Shibata; T. Kudoh; H. Sol

2002-08-05T23:59:59.000Z

473

Building Energy Software Tools Directory: Frame Simulator  

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

Frame Simulator Frame Simulator Frame Simulator logo Frame Simulator makes calculation of the thermal transmittance in windows and building components an extremely easy process. It can be used to: analyze how heat flows through building components and fenestrations estimate surface temperatures and predict condensation problems discover weak points in window frames calculate thermal transmittance Uf and linear conductance Lf2d of any type of window frame as well as the Uw thermal transmittance of entire complex fenestration. Precise simulation of the heat transfer is performed using a two-dimensional numerical method for steady state boundary conditions conforming to ISO 10077-2 (finite elements). Screen Shots Keywords 2D, heat transfer, thermal analysis, thermal transmittance, thermal

474

Morphology of Gas Release in Physical Simulants  

SciTech Connect (OSTI)

This report documents testing activities conducted as part of the Deep Sludge Gas Release Event Project (DSGREP). The testing described in this report focused on evaluating the potential retention and release mechanisms of hydrogen bubbles in underground radioactive waste storage tanks at Hanford. The goal of the testing was to evaluate the rate, extent, and morphology of gas release events in simulant materials. Previous, undocumented scoping tests have evidenced dramatically different gas release behavior from simulants with similar physical properties. Specifically, previous gas release tests have evaluated the extent of release of 30 Pa kaolin and 30 Pa bentonite clay slurries. While both materials are clays and both have equivalent material shear strength using a shear vane, it was found that upon stirring, gas was released immediately and completely from bentonite clay slurry while little if any gas was released from the kaolin slurry. The motivation for the current work is to replicate these tests in a controlled quality test environment and to evaluate the release behavior for another simulant used in DSGREP testing. Three simulant materials were evaluated: 1) a 30 Pa kaolin clay slurry, 2) a 30 Pa bentonite clay slurry, and 3) Rayleigh-Taylor (RT) Simulant (a simulant designed to support DSGREP RT instability testing. Entrained gas was generated in these simulant materials using two methods: 1) application of vacuum over about a 1-minute period to nucleate dissolved gas within the simulant and 2) addition of hydrogen peroxide to generate gas by peroxide decomposition in the simulants over about a 16-hour period. Bubble release was effected by vibrating the test material using an external vibrating table. When testing with hydrogen peroxide, gas release was also accomplished by stirring of the simulant.

Daniel, Richard C.; Burns, Carolyn A.; Crawford, Amanda D.; Hylden, Laura R.; Bryan, Samuel A.; MacFarlan, Paul J.; Gauglitz, Phillip A.

2014-07-03T23:59:59.000Z

475

Simulating Microbial Community Patterning Using Biocellion  

SciTech Connect (OSTI)

Mathematical modeling and computer simulation are important tools for understanding complex interactions between cells and their biotic and abiotic environment: similarities and differences between modeled and observed behavior provide the basis for hypothesis forma- tion. Momeni et al. [5] investigated pattern formation in communities of yeast strains engaging in different types of ecological interactions, comparing the predictions of mathematical modeling and simulation to actual patterns observed in wet-lab experiments. However, simu- lations of millions of cells in a three-dimensional community are ex- tremely time-consuming. One simulation run in MATLAB may take a week or longer, inhibiting exploration of the vast space of parameter combinations and assumptions. Improving the speed, scale, and accu- racy of such simulations facilitates hypothesis formation and expedites discovery. Biocellion is a high performance software framework for ac- celerating discrete agent-based simulation of biological systems with millions to trillions of cells. Simulations of comparable scale and accu- racy to those taking a week of computer time using MATLAB require just hours using Biocellion on a multicore workstation. Biocellion fur- ther accelerates large scale, high resolution simulations using cluster computers by partitioning the work to run on multiple compute nodes. Biocellion targets computational biologists who have mathematical modeling backgrounds and basic C++ programming skills. This chap- ter describes the necessary steps to adapt the original Momeni et al.'s model to the Biocellion framework as a case study.

Kang, Seung-Hwa; Kahan, Simon H.; Momeni, Babak

2014-04-17T23:59:59.000Z

476

Dynamics Simulation in a Wave Environment  

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

Coupled Dynamic Simulation in a Wave Coupled Dynamic Simulation in a Wave Environment (Navatek, AEGIR, and WECs) Marine and Hydrokinetics Instrumentation Workshop 9 July 2012 David Kring, Navatek Ltd. Presentation Overview * Introduction to Navatek * AEGIR brief: resistance, seakeeping, global and local loads a 3D, NURBS-based, high-order, Rankine boundary element method ... from same lab as at MIT as WAMIT and SWAN, with pFFT acceleration coupling with controls, structures, aerodynamics, power take-offs * Some WEC applications at Navatek 2 Honolulu, Hawaii, USA Company Background A "Research Shipyard" based in Honolulu, HI Combining simulation-based design with prototype construction

477

Modeling techniques for simulating well behavior  

E-Print Network [OSTI]

for each reservoir systems. It is a single phase, 2D simulator that is originally developed to simulate real gas flow. Later, it was modified to include the ability to simulate liquid case. It is written in Visual Basic code for Excel. It has been used... . . . . (3-2) Analytical solutions for radial flow case were calculated using a program written in Visual Basic code for Excel. It uses numerical inversion suggested by Stehfest to GO solve the flow equations in Laplace space. Analytical solutions...

Rattu, Bungen Christina

2012-06-07T23:59:59.000Z

478

Physical simulation study of dynamic voltage instability  

SciTech Connect (OSTI)

This paper presents a physical simulation of the dynamic behavior of voltage instability in an interconnected multimachine environment. The dynamic evolving process leading to eventual voltage collapse, the scenario of the progressive reactive support reduction resulting from the MXL protection relays, the OLTC operation, and the effect of switched-in capacitor banks are examined using physical facilities in the laboratory. The physical simulation results are also compared with digital simulation results. This physical investigation provides a reliable foundation for the effective development of assessment approaches and countermeasures.

Tso, S.K.; Zhu, T.X. [Univ. of Hong Kong (Hong Kong); Zeng, Q.Y. [Electric Power Research Inst., Beijing (China); Lo, K.L. [Univ. of Strathclyde, Glasgow (United Kingdom). Dept. of Electrical and Electrical Engineering

1995-12-31T23:59:59.000Z

479

Some theoretical issues on computer simulations  

SciTech Connect (OSTI)

The subject of this paper is the development of mathematical foundations for a theory of simulation. Sequentially updated cellular automata (sCA) over arbitrary graphs are employed as a paradigmatic framework. In the development of the theory, the authors focus on the properties of causal dependencies among local mappings in a simulation. The main object of and study is the mapping between a graph representing the dependencies among entities of a simulation and a representing the equivalence classes of systems obtained by all possible updates.

Barrett, C.L.; Reidys, C.M.

1998-02-01T23:59:59.000Z

480

Distribution of oceanic 137Cs from the Fukushima Dai-ichi Nuclear Power Plant simulated numerically by a regional ocean model  

Science Journals Connector (OSTI)

Radioactive materials were released to the environment from the Fukushima Dai-ichi Nuclear Power Plant as a result of the reactor accident after the Tohoku earthquake and tsunami of 11 March 2011. The measured 137Cs concentration in a seawater sample near the Fukushima Dai-ichi Nuclear Power Plant site reached 68 kBq L?1 (6.8 × 104 Bq L?1) on 6 April. The two major likely pathways from the accident site to the ocean existed: direct release of high radioactive liquid wastes to the ocean and the deposition of airborne radioactivity to the ocean surface. By analysis of the 131I/137Cs activity ratio, we determined that direct release from the site contributed more to the measured 137Cs concentration than atmospheric deposition did. We then used a regional ocean model to simulate the 137Cs concentrations resulting from the direct release to the ocean off Fukushima and found that from March 26 to the end of May the total amount of 137Cs directly released was 3.5 ± 0.7 PBq ((3.5 ± 0.7) × 1015 Bq). The simulated temporal change in 137Cs concentrations near the Fukushima Daini Nuclear Power Plant site agreed well with observations. Our simulation results showed that (1) the released 137Cs advected southward along the coast during the simulation period; (2) the eastward-flowing Kuroshio and its extension transported 137C during May 2011; and (3) 137Cs concentrations decreased to less than 10 Bq L?1 by the end of May 2011 in the whole simulation domain as a result of oceanic advection and diffusion. We compared the total amount and concentration of 137Cs released from the Fukushima Dai-ichi reactors to the ocean with the 137Cs released to the ocean by global fallout. Even though the measured 137Cs concentration from the Fukushima accident was the highest recorded, the total released amount of 137Cs was not very large. Therefore, the effect of 137Cs released from the Fukushima Dai-ichi reactors on concentration in the whole North Pacific was smaller than that of past release events such as global fallout, and the amount of 137Cs expected to reach other oceanic basins is negligible comparing with the past radioactive input.

Daisuke Tsumune; Takaki Tsubono; Michio Aoyama; Katsumi Hirose

2012-01-01T23:59:59.000Z

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481

Modeling and Simulation Data Generation.pub  

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

Simulation Data Simulation Data Generation Oak Ridge National Laboratory managed by UT-Battelle, LLC for the U.S. Department of Energy under Contract number DE-AC05-00OR22725 Research Areas Freight Flows Passenger Flows Supply Chain Efficiency Transportation: Energy Environment Safety Security Vehicle Technologies Research Brief A n ORNL team supported the Rapid Data Generation (RDG) Project from 2009 to 2012. This work was performed for the Joint Training Integration and Evaluation Center and the Modeling and Simulation Coordination Office. The objective of RDG is to reduce the resources required to produce, integrate, and correlate data, eliminate or reduce duplicative efforts, and promote data commonality for modeling and simulation (M&S) activities across the Department of

482

Property:Simulated Beach | Open Energy Information  

Open Energy Info (EERE)

Simulated Beach Simulated Beach Jump to: navigation, search Property Name Simulated Beach Property Type String Pages using the property "Simulated Beach" Showing 25 pages using this property. (previous 25) (next 25) 1 1.5-ft Wave Flume Facility + No + 10-ft Wave Flume Facility + No + 11-ft Wave Flume Facility + No + 2 2-ft Flume Facility + No + 3 3-ft Wave Flume Facility + No + 5 5-ft Wave Flume Facility + No + 6 6-ft Wave Flume Facility + No + A Alden Large Flume + No + Alden Small Flume + No + Alden Wave Basin + Yes + B Breakwater Research Facility + No + C Carderock Maneuvering & Seakeeping Basin + Yes + Carderock Tow Tank 2 + Yes + Carderock Tow Tank 3 + Yes + Chase Tow Tank + No + Coastal Harbors Modeling Facility + No + Coastal Inlet Model Facility + No +

483

Advanced Process Engineering Co-simulation  

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

7 7 AdvAnced Process engineering co-simulAtion Description The National Energy Technology Laboratory (NETL) and its R&D collaboration partners are developing the Advanced Process Engineering Co-Simulator (APECS) as an innovative software tool that combines process simulation with high-fidelity equipment models based on computational fluid dynamics (CFD). Winner of a 2004 R&D 100 Award and a 2007 Federal Laboratory Consortium (FLC) Excellence in Technology Transfer Award, this powerful co-simulation technology, for the first time, provides the necessary level of detail and accuracy essential for engineers to analyze and optimize the coupled fluid flow, heat and mass transfer, and chemical reactions that drive overall plant performance. Combined with advanced visualization and high-performance computing,

484

Thermal Simulation of Advanced Powertrain Systems  

Broader source: Energy.gov [DOE]

Under this project, the Volvo complete vehicle model was modified to include engine and exhaust system thermal outputs and cooling system to enable WHR simulations from a system perspective.

485

Wind Power System Simulation of Switch Control  

Science Journals Connector (OSTI)

In order to find a balance between energy efficiency and reliability of wind power generation system, this paper presents a ... switch control strategy. This paper establishes a wind power system simulation model...

Yuehua Huang; Guangxu Li; Huanhuan Li

2014-01-01T23:59:59.000Z

486

Eyewitness identification: Simulating the “Weapon effect”  

Science Journals Connector (OSTI)

The present experiment investigates the effect of weapons on eyewitness recall and recognition using a ... experimental paradigm in which a syringe serves as weapon simulation. Contrary to previous weapon manipul...

Anne Maass; Günther Köhnken

1989-12-01T23:59:59.000Z

487

Vehicular racing simulation: a MEL scripting approach  

E-Print Network [OSTI]

The purpose of this thesis is to develop an automated technique for controlling the animation of computer-generated cars for the application of motorsports, also known as car racing. The basic idea is similar to previous work simulating flocks...

Chan, Hobart

2004-11-15T23:59:59.000Z

488

Development and Characterization of Gibbsite Component Simulant  

SciTech Connect (OSTI)

According to Bechtel National, Inc.’s (BNI’s) Test Specification 24590-PTF-TSP-RT-06-006, Rev 0, "Simulant Development to Support the Development and Demonstration of Leaching and Ultrafiltration Pretreatment Processes," simulants for boehmite, gibbsite, and filtration are to be developed so they can be used in subsequent bench and integrated testing of the leaching/filtration processes for the River Protection Project-Waste Treatment and Immobilization Plant (RPP-WTP). These simulants will then be used to demonstrate the leaching process and to help refine processing conditions that may impact safety basis considerations (Smith 2006). This report documents PNNL’s results of the gibbsite simulant development.

Russell, Renee L.; Smith, Harry D.; Rinehart, Donald E.; Peterson, Reid A.

2009-01-29T23:59:59.000Z

489

Numerical simulation of electrokinetically driven micro flows  

E-Print Network [OSTI]

Spectral element based numerical solvers are developed to simulate electrokinetically driven flows for micro-fluidic applications. Based on these numerical solvers, basic phenomena and devices for electrokinetic applications in micro and nano flows...

Hahm, Jungyoon

2005-11-01T23:59:59.000Z

490

Simulating quantum systems on a quantum computer  

Science Journals Connector (OSTI)

...A-eigenstates in the original system state. Also after each observation...1998) Simulating quantum systems on a quantum computer 321 system will be in an eigenstate of...the energy eigenstates. An analysis shows that the relative accuracy...

1998-01-01T23:59:59.000Z

491

Numerical techniques of rigid body simulation  

E-Print Network [OSTI]

In recent years, the modeling of physical phenomena has become an integral part of computer applications in diverse areas from engineering to entertainment. This thesis focuses on a particular aspect of this modeling, the simulation of rigid...

Eberle, David Michael

2012-06-07T23:59:59.000Z

492

Analytical Modeling and Simulation of Thermoelectric Devices  

Broader source: Energy.gov [DOE]

A high-level strategy for semi-empirical modeling and numerical simulation tools using top-down/bottom-up approaches to define TE design operating conditions and optimization.

493

Simulation data architecture for sustainable development  

Science Journals Connector (OSTI)

Reducing costs, improving quality, shortening the time-to-market, and at the same time act and think sustainable are major challenges for manufacturing industries. To strive towards these objectives, discrete event simulation (DES) has proven to be an ...

Adrien Boulonne; Björn Johansson; Anders Skoogh; Mark Aufenanger

2010-12-01T23:59:59.000Z

494

Simulation of synchrotron motion with rf noise  

SciTech Connect (OSTI)

The theoretical formulation is described that is behind an algorithm for synchrotron phase-space tracking with rf noise and some preliminary simulation results of bunch diffusion under rf noise obtained by actual tracking.

Leemann, B.T.; Forest, E.; Chattopadhyay, S.

1986-08-01T23:59:59.000Z

495

Development of intelligent simulations at LLNL  

SciTech Connect (OSTI)

The Virtual Commander Project (VCom) is developing a capability for semiautomated optimal control of simulation entities. Properties of our control paradigm are goal-directed planning, hierarchical plan generation, automated fault detection, adaptive plan repair, and optimized cooperation and coordination among units, in addition to more conventional rule-driven behaviors. VCom has been applied to planning armor engagements at the battalion level and below. We are currently investigating movement-to-contact and fire-and-movement maneuvers. These capabilities will be demonstrated in April in conjunction with the Joint Conflict Model (JCM) a large, entity-level, constructive combat simulation. Both simulations have been developed to interoperate in a distributed computing environment using Distributed Interactive Simulation (DIS) protocols. Prototype applications have been demonstrated in other civilian and military contexts. A focus of our current work is the rapid prototyping of such applications.

Cunningham, C.T.

1994-03-01T23:59:59.000Z

496

First trillion particle cosmological simulation completed  

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

high-resolution cyber images of our cosmos. December 3, 2014 Simulation of the cosmic web of the dark matter mass distribution. This region represents about 110,000 of the...

497

Numerical Simulation in a Supercirtical CFB Boiler  

Science Journals Connector (OSTI)

The dimension of the hot circulation loop of the supercritical CFB boiler is large, and there are many ... simulation of gas-solid flow in a supercritical CFB boiler was conducted by using FLUENT software. ... th...

Yanjun Zhang; Xiang Gaol; Zhongyang Luo…

2010-01-01T23:59:59.000Z

498

Transportation Analysis, Modeling, and Simulation (TAMS) Application  

E-Print Network [OSTI]

Transportation Analysis, Modeling, and Simulation (TAMS) Application Center for Transportation Passenger Flows Supply Chain Efficiency Transportation: Energy Environment Safety Security Vehicle Technologies T he Center for Transportation Analysis (CTA) TAMS application is a web-based tool that supports

499

Refinery burner simulation design architecture summary.  

SciTech Connect (OSTI)

This report describes the architectural design for a high fidelity simulation of a refinery and refinery burner, including demonstrations of impacts to the refinery if errors occur during the refinery process. The refinery burner model and simulation are a part of the capabilities within the Sandia National Laboratories Virtual Control System Environment (VCSE). Three components comprise the simulation: HMIs developed with commercial SCADA software, a PLC controller, and visualization software. All of these components run on different machines. This design, documented after the simulation development, incorporates aspects not traditionally seen in an architectural design, but that were utilized in this particular demonstration development. Key to the success of this model development and presented in this report are the concepts of the multiple aspects of model design and development that must be considered to capture the necessary model representation fidelity of the physical systems.

Pollock, Guylaine M.; McDonald, Michael James; Halbgewachs, Ronald D.

2011-10-01T23:59:59.000Z

500

MODELING, ANALYSIS AND SIMULATION OF MULTIBODY SYSTEMS  

E-Print Network [OSTI]

painting device to the simulation of hundreds of mobile robots in a complex environment. Former "Graspees of multibody systems plays an important role in a wide range of fields, from robotics to computer animation

Plotkin, Joshua B.