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Large Data Visualization on Distributed Memory Mulit-GPU Clusters (open access)

Large Data Visualization on Distributed Memory Mulit-GPU Clusters

Data sets of immense size are regularly generated on large scale computing resources. Even among more traditional methods for acquisition of volume data, such as MRI and CT scanners, data which is too large to be effectively visualization on standard workstations is now commonplace. One solution to this problem is to employ a 'visualization cluster,' a small to medium scale cluster dedicated to performing visualization and analysis of massive data sets generated on larger scale supercomputers. These clusters are designed to fit a different need than traditional supercomputers, and therefore their design mandates different hardware choices, such as increased memory, and more recently, graphics processing units (GPUs). While there has been much previous work on distributed memory visualization as well as GPU visualization, there is a relative dearth of algorithms which effectively use GPUs at a large scale in a distributed memory environment. In this work, we study a common visualization technique in a GPU-accelerated, distributed memory setting, and present performance characteristics when scaling to extremely large data sets.
Date: March 1, 2010
Creator: Childs, Henry R.
Object Type: Article
System: The UNT Digital Library
Overview of SOFC Anode Interactions with Coal Gas Impurities (open access)

Overview of SOFC Anode Interactions with Coal Gas Impurities

An overview of the results of SOFC anode interactions with phosphorus, arsenic, selenium, sulfur, antimony, and hydrogen chloride as single contaminants or in combinations is discussed. Tests were performed using both anode- and electrolyte-supported cells in synthetic and actual coal gas for periods greater than 1000 hours. Post-test analyses were performed to identify reaction products formed and their distribution, and compared to phases expected from thermochemical modeling. The ultimate purpose of this work is to establish maximum permissible concentrations for impurities in coal gas, to aid in the selection of appropriate coal gas clean-up technologies.
Date: March 1, 2010
Creator: Marina, O. A.; Pederson, L. R.; Gemmen, R.; Gerdes, K.; Finklea, H. & Celik, I. B.
Object Type: Report
System: The UNT Digital Library
Silicon-Based Thermoelectrics: Harvesting Low Quality Heat Using Economically Printed Flexible Nanostructured Stacked Thermoelectric Junctions (open access)

Silicon-Based Thermoelectrics: Harvesting Low Quality Heat Using Economically Printed Flexible Nanostructured Stacked Thermoelectric Junctions

Broad Funding Opportunity Announcement Project: UIUC is experimenting with silicon-based materials to develop flexible thermoelectric devices—which convert heat into energy—that can be mass-produced at low cost. A thermoelectric device, which resembles a computer chip, creates electricity when a different temperature is applied to each of its sides. Existing commercial thermoelectric devices contain the element tellurium, which limits production levels because tellurium has become increasingly rare. UIUC is replacing this material with microscopic silicon wires that are considerably cheaper and could be equally effective. Improvements in thermoelectric device production could return enough wasted heat to add up to 23% to our current annual electricity production.
Date: March 1, 2010
Creator: unknown
Object Type: Text
System: The UNT Digital Library
Study of the (e,e'p) quasi-elastic reaction in complex nuclei: theory and experiment (open access)

Study of the (e,e'p) quasi-elastic reaction in complex nuclei: theory and experiment

Experimental coincidence cross section and transverse-longitudinal asymmetry A{sub TL} have been obtained for the quasielastic (e,e'p) reaction in {sup 16}O, {sup 12}C, and {sup 208}Pb in constant q-ω kinematics in the missing momentum range -350 < p{sub miss} < 350 MeV/c. In these experiments, performed in experimental Hall A of the Thomas Jefferson National Accelerator Facility (JLAB), the beam energy and the momentum and angle of the scattered electrons were kept fixed, while the angle between the proton momentum and the momentum transfer q was varied in order to map out the missing momentum distribution. The experimental cross section and A{sub TL} asymmetry have been compared with Monte Carlo simulations based on Distorted Wave Impulse Approximation (DWIA) calculations with both relativistic and non-relativistic spinor structure. The spectroscopic factors obtained for both models are in agreement with previous experimental values, while A{sub TL} measurements favor the relativistic DWIA calculation. This thesis describes the details of the experimental setup, the calibration of the spectrometers, the techniques used in the data analysis to derive the final cross sections and the A{sub TL}, the ingredients of the theoretical calculations employed and the comparison of the results with the simulations based on these theoretical models.
Date: March 1, 2010
Creator: Herraiz, Joaquin Lopez
Object Type: Thesis or Dissertation
System: The UNT Digital Library
X-ray CT Observations of Methane Hydrate Distribution Changes over Time in a Natural Sediment Core from the BPX-DOE-USGS Mount Elbert Gas Hydrate Stratigraphic Test Well (open access)

X-ray CT Observations of Methane Hydrate Distribution Changes over Time in a Natural Sediment Core from the BPX-DOE-USGS Mount Elbert Gas Hydrate Stratigraphic Test Well

When maintained under hydrate-stable conditions, methane hydrate in laboratory samples is often considered a stable and immobile solid material. Currently, there do not appear to be any studies in which the long-term redistribution of hydrates in sediments has been investigated in the laboratory. These observations are important because if the location of hydrate in a sample were to change over time (e.g. by dissociating at one location and reforming at another), the properties of the sample that depend on hydrate saturation and pore space occupancy would also change. Observations of hydrate redistribution under stable conditions are also important in understanding natural hydrate deposits, as these may also change over time. The processes by which solid hydrate can move include dissociation, hydrate-former and water migration in the gas and liquid phases, and hydrate formation. Chemical potential gradients induced by temperature, pressure, and pore water or host sediment chemistry can drive these processes. A series of tests were performed on a formerly natural methane-hydrate-bearing core sample from the BPX-DOE-USGS Mount Elbert Gas Hydrate Stratigraphic Test Well, in order to observe hydrate formation and morphology within this natural sediment, and changes over time using X-ray computed tomography (CT). Long-term observations (over several weeks) …
Date: March 1, 2010
Creator: Kneafsey, T.J. & Rees, E.V.L.
Object Type: Report
System: The UNT Digital Library
Public Health, Workforce, Quality, and Related Provisions in H.R. 3590, as Passed by the Senate (open access)

Public Health, Workforce, Quality, and Related Provisions in H.R. 3590, as Passed by the Senate

This report summarizes the workforce, prevention, quality, and related provisions in H.R. 3590, as passed by the Senate. It begins with some background on health care delivery reform, followed by an overview of the report’s content and organization
Date: March 1, 2010
Creator: Redhead, C. Stephen & Williams, Erin D.
Object Type: Report
System: The UNT Digital Library
International Treaty on Plant Genetic Resources for Food and Agriculture (open access)

International Treaty on Plant Genetic Resources for Food and Agriculture

This report provides an overview of the international treaty on plant genetic resources for food and agricultural.
Date: March 1, 2010
Creator: Ho, Melissa D.
Object Type: Report
System: The UNT Digital Library
War Bonds in the Second World War: A Model for a New Iraq/Afghanistan War Bond? (open access)

War Bonds in the Second World War: A Model for a New Iraq/Afghanistan War Bond?

This report discusses the high costs of fighting the wars in Iraq and Afghanistan that have rekindled congressional interest in the concept of the sale of a Treasury security to help finance these war costs.
Date: March 1, 2010
Creator: Bickley, James M.
Object Type: Report
System: The UNT Digital Library
Afghanistan: Post-Taliban Governance, Security, and U.S. Policy (open access)

Afghanistan: Post-Taliban Governance, Security, and U.S. Policy

This report discusses the current political state of Iran, focusing particularly on the influence of the Taliban and other militant groups and on the leadership of Afghan President Hamid Karzai. This report also discusses the U.S.-Iran relationship and U.S. efforts under the Obama Administration to provide military, reconstructive, and stabilization aid.
Date: March 1, 2010
Creator: Katzman, Kenneth
Object Type: Report
System: The UNT Digital Library
Financial Audit: American Battle Monuments Commission's Financial Statements for Fiscal Years 2009 and 2008 (open access)

Financial Audit: American Battle Monuments Commission's Financial Statements for Fiscal Years 2009 and 2008

A letter report issued by the Government Accountability Office with an abstract that begins "In accordance with 36 U.S.C. 2103, GAO is responsible for conducting audits of the agencywide financial statements of the American Battle Monuments Commission (the Commission). GAO audited the financial statements of the Commission for the fiscal years ended September 30, 2009, and 2008. The audits were done to determine whether, in all material respects, (1) the Commission's financial statements were presented fairly and (2) Commission management maintained effective internal control over financial reporting. GAO also tested Commission management's compliance with selected laws and regulations. Created in 1923, the Commission operates and maintains 24 American military cemeteries on foreign soil; 25 federal memorials, monuments, and markers; and 7 nonfederal memorials. GAO is not making any recommendations in this report, but will be reporting separately on our recommendations for strengthening the Commission's controls. In commenting on a draft of this report, the Commission concurred with its facts and conclusions. Further, the Commission stated it would report the Antideficency Act violation and noted that the appointment of Commissioners to provide governance resides with the President of the United States."
Date: March 1, 2010
Creator: United States. Government Accountability Office.
Object Type: Report
System: The UNT Digital Library
NPP-16/Nup50 Function and CDK-1 Inactivation Are Associated with Anoxia-induced Prophase Arrest in Caenorhabditis elgans (open access)

NPP-16/Nup50 Function and CDK-1 Inactivation Are Associated with Anoxia-induced Prophase Arrest in Caenorhabditis elgans

Article discussing how NPP-16/Nup50 function and CDK-1 inactivation are associated with anoxia-induced prophase arrest in Caenorhabditis elegans.
Date: March 1, 2010
Creator: Hajeri, Vinita A.; Little, Brent A.; Ladage, Mary L. & Padilla, Pamela A.
Object Type: Article
System: The UNT Digital Library

Ensemble: 2010-03-01 – Spectrum

Access: Use of this item is restricted to the UNT Community
Composition recital presented at the UNT College of Music Recital Hall.
Date: March 1, 2010
Creator: unknown
Object Type: Sound
System: The UNT Digital Library

Faculty Lecture: 2010-03-01 - Eric Nestler

Access: Use of this item is restricted to the UNT Community
Faculty lecture recital presented at the UNT College of Music Recital Hall.
Date: March 1, 2010
Creator: Nestler, Eric M.
Object Type: Sound
System: The UNT Digital Library
Sweetwater Reporter (Sweetwater, Tex.), Vol. 112, No. 090, Ed. 1 Monday, March 1, 2010 (open access)

Sweetwater Reporter (Sweetwater, Tex.), Vol. 112, No. 090, Ed. 1 Monday, March 1, 2010

Daily newspaper from Sweetwater, Texas that includes local, state, and national news along with advertising.
Date: March 1, 2010
Creator: unknown
Object Type: Newspaper
System: The Portal to Texas History
[Funeral Program for Barbara Jean Maxey, March 1, 2010] (open access)

[Funeral Program for Barbara Jean Maxey, March 1, 2010]

Funeral program for Mrs. Barbara Jean Maxey, born March 31, 1930 and died February 22, 2010. The funeral was held Monday, March 1, 2010 at Second Baptist Church, officiated by Rev. Dr. Robert L. Jemerson, Pastor. Funeral arrangements were made through Lewis Funeral Home and she was buried in Fort Sam Houston National Cemetery near San Antonio, Texas.
Date: March 1, 2010
Creator: unknown
Object Type: Pamphlet
System: The Portal to Texas History
Federal Register, Volume 75, Number 39, March 1, 2010, Pages 9085-9326 (open access)

Federal Register, Volume 75, Number 39, March 1, 2010, Pages 9085-9326

Daily publication of the U.S. Office of the Federal Register contains rules and regulations, proposed legislation and rule changes, and other notices, including "Presidential proclamations and Executive Orders, Federal agency documents having general applicability and legal effect, documents required to be published by act of Congress, and other Federal agency documents of public interest" (p. ii). Table of Contents starts on page iii.
Date: March 1, 2010
Creator: United States. Office of the Federal Register.
Object Type: Journal/Magazine/Newsletter
System: The UNT Digital Library