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A texture-based framework for improving CFD data visualization in a virtual environment

Description: In the field of computational fluid dynamics (CFD) accurate representations of fluid phenomena can be simulated hut require large amounts of data to represent the flow domain. Most datasets generated from a CFD simulation can be coarse, {approx}10,000 nodes or cells, or very fine with node counts on the order of 1,000,000. A typical dataset solution can also contain multiple solutions for each node, pertaining to various properties of the flow at a particular node. Scalar properties such as den… more
Date: May 5, 2005
Creator: Bivins, Gerrick O'Ron
Partner: UNT Libraries Government Documents Department
open access

A texture-based frameowrk for improving CFD data visualization in a virtual environment

Description: In the field of computational fluid dynamics (CFD) accurate representations of fluid phenomena can be simulated but require large amounts of data to represent the flow domain. Most datasets generated from a CFD simulation can be coarse, {approx} 10,000 nodes or cells, or very fine with node counts on the order of 1,000,000. A typical dataset solution can also contain multiple solutions for each node, pertaining to various properties of the flow at a particular node. Scalar properties such as de… more
Date: May 1, 2005
Creator: Biveins, Gerrick O'Ron
Partner: UNT Libraries Government Documents Department
open access

Elastic Wave Radiation from a Line Source of Finite Length

Description: Straightforward algebraic expressions describing the elastic wavefield produced by a line source of finite length are derived in circular cylindrical coordinates. The surrounding elastic medium is assumed to be both homogeneous and isotropic, anc[ the source stress distribution is considered axisymmetic. The time- and space-domain formulae are accurate at all distances and directions from the source; no fa-field or long-wavelength assumptions are adopted for the derivation. The mathematics yiel… more
Date: November 4, 1998
Creator: Aldridge, D.F.
Partner: UNT Libraries Government Documents Department
open access

Standard Atomic Weights Tables 2007 Abridged to Four and Five Significant Figures

Description: In response to a recommendation to the Commission on Isotopic Abundances and Atomic Weights (CIAAW) that abridged versions of the Table on Standard Atomic Weights be prepared and published, this report has been prepared. A brief history is presented of such Atomic Weight tables that have been abridged to four significant figures and to five significant figures are noted. Tables of Standard Atomic Weight values abridged to four places and five places from the official 2007 Table of Atomic Weight… more
Date: August 1, 2007
Creator: Holden, N. E.
Partner: UNT Libraries Government Documents Department
open access

Evaluated Decay Data for {Sup 246}CM.

Description: The Nuclear Data and Measurement Series document results of studies in the field of microscopic nuclear data. The primary objective is the dissemination of information in the comprehensive form required for nuclear technology applications. This Series is devoted to: (a) measured microscopic nuclear parameters, (b) experimental techniques and facilities employed in measurements, (c) the analysis, correlation and interpretation of nuclear data, and (d) the compilation and evaluation of nuclear da… more
Date: February 26, 2007
Creator: Kondev, F. G.
Partner: UNT Libraries Government Documents Department
open access

Fast-neutrons incident on gadolinium.

Description: Reports in the Argonne National Laboratory Nuclear Data and Measurement Series present results of studies in the field of microscopic nuclear data. The primary objective of the series is the dissemination of information in the comprehensive form required for nuclear technology applications. This Series is devoted to: (a) measured microscopic nuclear parameters, (b) experimental techniques and facilities employed in measurements, (c) the analysis, correlation and interpretation of nuclear data, … more
Date: May 24, 2004
Creator: Smith, A. B.
Partner: UNT Libraries Government Documents Department
open access

Hanford Site Environmental Surveillance Data Report for Calendar Year 2001

Description: This document contains the tables of data on which PNNL's environmental surveillance summary information is based. This data report contains the actual raw data used to create the tables and summaries in the Hanford Site Environmental Report for Calendar Year 2001.
Date: September 2, 2002
Creator: Bisping, Lynn E.
Partner: UNT Libraries Government Documents Department
open access

Characteristics of seismic waves from Soviet peaceful nuclear explosions in salt

Description: The report is carried out by the Institute for Dynamics of the Geospheres, Russian Academy of Sciences under contract NB280344 with Lawrence Livermore National Laboratory, University of California. The work includes investigation of seismic waves generation and propagation from Soviet peaceful underground nuclear explosions in salt based on the data from temporary and permanent seismic stations. The explosions were conducted at the sites Azgir and Vega within the territory of the Caspian depres… more
Date: April 1, 1995
Creator: Adushkin, V. V.; Kaazik, P. B.; Kostyuchenko, V. N.; Kuznetsov, O. P.; Nedoshivin, N. I.; Rubinshtein, K. D. et al.
Partner: UNT Libraries Government Documents Department
open access

The size of a polymer of string-bits: a numerical investigation

Description: In string bit models, string is described as a polymer of point-like constituents. We attempt to use string-bit ideas to investigate how the size of string is affected by string interactions in a non-perturbative context. Lacking adequate methods to deal with the full complications of bit rearrangement interactions, we study instead a simplified analog model with only ``direct`` potential interactions among the bits. We use the variational principle in an approximate calculation of the mean-squ… more
Date: April 1, 1997
Creator: Bergman, Oren & Thorn, Charles B.
Partner: UNT Libraries Government Documents Department
open access

Proper motion with HST: Searching for high-velocity stars in the core of the globular cluster 47 Tucanae

Description: Binary stars play an essential role during the late phases of the dynamical evolution of a globular cluster. They transfer energy to passing stars and so can strongly influence the cluster evolution, enough to delay, halt, and even reverse core collapse. Hard binaries are known to exist in cluster cores, e.g., in the form of millisecond pulsars (about half of the millisecond pulsars observed in 47 Tucanae are such hard binaries). The presence of hard binaries may also be revealed by searching f… more
Date: February 13, 1996
Creator: Meylan, G.; Minniti, D.; Pryor, C.; Tinney, C.G.; Phinney, E.S. & Sams, B.
Partner: UNT Libraries Government Documents Department
open access

Random polycrystals of grains containing cracks: Model ofquasistatic elastic behavior for fractured systems

Description: A model study on fractured systems was performed using aconcept that treats isotropic cracked systems as ensembles of crackedgrains by analogy to isotropic polycrystalline elastic media. Theapproach has two advantages: (a) Averaging performed is ensembleaveraging, thus avoiding the criticism legitimately leveled at mosteffective medium theories of quasistatic elastic behavior for crackedmedia based on volume concentrations of inclusions. Since crack effectsare largely independent of the volume … more
Date: July 8, 2006
Creator: Berryman, James G. & Grechka, Vladimir
Partner: UNT Libraries Government Documents Department
open access

Quantifying Flaw Characteristics from IR NDE Data

Description: Work is presented which allows flaw characteristics to be quantified from the transient IR NDE signature. The goal of this effort was to accurately determine the type, size and depth of flaws revealed with IR NDE, using sonic IR as the example IR NDE technique. Typically an IR NDE experiment will result in a positive qualitative indication of a flaw such as a cold or hot spot in the image, but will not provide quantitative data thereby leaving the practitioner to make educated guesses as to the… more
Date: February 14, 2003
Creator: Miller, W; Philips, N R; Burke, M W & Robbins, C L
Partner: UNT Libraries Government Documents Department
open access

Semi-annual report of the Department of Energy, Office of Environmental Management, Quality Assessment Program

Description: This Quality Assessment Program (QAP) is designed to test the quality of the environmental measurements being reported to the Department of Energy by its contractors. Since 1976, real or synthetic environmental samples that have been prepared and thoroughly analyzed at the Environmental Measurements Laboratory (EML) have been distributed at first quarterly and then semi-annually to these contractors. Their results, which are returned to EML within 90 days, are compiled with EML`s results and ar… more
Date: July 1, 1998
Creator: Greenlaw, P. D. & Minick, S. K.
Partner: UNT Libraries Government Documents Department
open access

Managing Senegalese water resources: Definition and relative importance of information needs

Description: This report provides an overview of the results of the Vital Issues process as implemented for the Senegal Water Resources Management Initiative, a collaborative effort between the Senegalese Ministry of Water Resources and Sandia National Laboratories. This Initiative is being developed to assist in the development of an efficient and sustainable water resources management system for Senegal. The Vital Issues process was used to provide information for the development of a proposal that will r… more
Date: September 1998
Creator: Engi, D.
Partner: UNT Libraries Government Documents Department
open access

Annual Hanford seismic report -- fiscal year 1996

Description: Seismic monitoring (SM) at the Hanford Site was established in 1969 by the US Geological Survey (USGS) under a contract with the US Atomic Energy Commission. Since 1980, the program has been managed by several contractors under the US Department of Energy (USDOE). Effective October 1, 1996, the Seismic Monitoring workscope, personnel, and associated contracts were transferred to the USDOE Pacific Northwest National Laboratory (PNNL). SM is tasked to provide an uninterrupted collection and archi… more
Date: December 1, 1996
Creator: Hartshorn, D. C. & Reidel, S. P.
Partner: UNT Libraries Government Documents Department
open access

Evaluation of options for reclamation of the Salton Sea

Description: Los Alamos National Laboratory, which is operated by the University of California for the Department of Energy, was asked last May by the Congressional Salton Sea Task Force to provide technical support for the remediation of the ecological problems in the Salton Sea. The results of their work in evaluating various concepts for addressing high salinity and variable water levels of the Sea relate to H.R. 3267 is presented. The results are preliminary and in some cases qualitative, but they can b… more
Date: November 1998
Creator: Hardie, R. W.
Partner: UNT Libraries Government Documents Department
open access

Semi-annual report of the Department of Energy, Office of Environmental Management, Quality Assessment Program

Description: This report presents the results from the analysis of the 44th set of environmental quality assessment samples (QAP XLIV) that were received on or before June 3, 1996. The QAP is designed to test the quality of environmental measurements being reported to the Department of Energy by it`s contractors. Since 1976, samples have been prepared and analyzed by the Environmental measurements Laboratory.
Date: July 1, 1996
Creator: Sanderson, C.G. & Greenlaw, P.
Partner: UNT Libraries Government Documents Department
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