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Private Collection of Jim Bell
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115
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46
National WASP WWII Museum
35
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34
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The Black Academy of Arts and Letters Records
1,219
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753
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424
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328
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187
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90
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78
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Assessment of Dose to the Nursing Infant from Radionuclides in Breast Milk
A computer software package was developed to predict tissue doses to an infant due to intake of radionuclides in breast milk based on bioassay measurements and exposure data for the mother. The package is intended mainly to aid in decisions regarding the safety of breast feeding by a mother who has been acutely exposed to a radionuclide during lactation or pregnancy, but it may be applied to previous intakes during the mother s adult life. The package includes biokinetic and dosimetric information needed to address intake of Co-60, Sr-90, Cs-134, Cs-137, Ir-192, Pu-238, Pu-239, Am-241, or Cf-252 by the mother. It has been designed so that the library of biokinetic and dosimetric files can be expanded to address a more comprehensive set of radionuclides without modifying the basic computational module. The methods and models build on the approach used in Publication 95 of the International Commission on Radiological Protection (ICRP 2004), Doses to Infants from Ingestion of Radionuclides in Mothers Milk . The software package allows input of case-specific information or judgments such as chemical form or particle size of an inhaled aerosol. The package is expected to be more suitable than ICRP Publication 95 for dose assessment for real …
Date:
March 1, 2010
Creator:
Leggett, Richard Wayne & Eckerman, Keith F
Object Type:
Report
System:
The UNT Digital Library
Atomistic Simulations of Chemical Reactivity of TATB Under Thermal and Shock Conditions
None
Date:
March 4, 2010
Creator:
Manaa, M. R.; Reed, E. J. & Fried, L. E.
Object Type:
Article
System:
The UNT Digital Library
An Audit Report on American Recovery and Reinvestment Act Funds for Selected Programs at the Texas Education Agency
Report of the Texas State Auditor's Office related to funds granted to select programs of the Texas Education Agency (TEA) by the American Recovery and Reinvestment Act (ARRA).
Date:
March 2010
Creator:
Texas. Office of the State Auditor.
Object Type:
Report
System:
The Portal to Texas History
An Audit Report on the Department of Criminal Justice's Oversight of Selected Providers That Deliver Residential Services and Substance Abuse Treatment Programs
Report of the Texas State Auditor's Office related to determining whether the activities of the Private Facilities Contract Monitoring and Oversight Division (Division) at the Department of Criminal Justice (Department) provide reasonable assurance that contractors operating private facilities comply with contractual terms governing operations and financial matters.
Date:
March 2010
Creator:
Texas. Office of the State Auditor.
Object Type:
Report
System:
The Portal to Texas History
An Audit Report on the Supplemental Nutrition Assistance Program at the Health and Human Services Commission
Report of the Texas State Auditor's Office related to determining the cause(s) of the current backlog in processing applications for the Supplemental Nutrition Assistance Program (SNAP) at the Health and Human Services Commission (Commission) and identifying opportunities for improvement; determining the Commission's compliance with selected federal and state laws, rules, and regulations regarding fraud prevention and detection in SNAP; and reviewing other processes, systems, and information related to SNAP.
Date:
March 2010
Creator:
Texas. Office of the State Auditor.
Object Type:
Report
System:
The Portal to Texas History
Authorizing the Dot Specification 6m Packaging for Continued Use at the Savannah River Site
The U.S. Department of Transportation (DOT) Specification 6M packaging was in extensive use for more than 40 years for in-commerce shipments of Type B quantities of fissile and radioactive material (RAM) across the USA, among the Department of Energy (DOE) laboratories, and between facilities in the DOE production complex. In January 2004, the DOT Research and Special Programs Administration (RSPA) Agency issued a final rule in the Federal Register to ammend requirements in the Hazardous Materials Regulations (HMR) pertaining to the transportation of radioactive materials. The final rule became effective on October 1, 2004. One of those changes discontinued the use of the DOT specification 6M, along with other DOT specification packagings, on October 1, 2008. A main driver for the change was due to the fact that 6M specification packagings were not supported by a Safety Analysis Report for Packagings (SARP) that was compliant with Title 10 of the Code of Federal Regulations (CFR) Part 71 (10 CFR 71). The regulatory rules for the discontinued use have been edited in Title 49 of the CFR Parts 100-185, 2004 edition and thereafter. Prior to October 1, 2008, the use of the 6M within the boundaries of the Savannah River Site …
Date:
March 4, 2010
Creator:
Watkins, R.; Loftin, B. & Hoang, D.
Object Type:
Article
System:
The UNT Digital Library
AutomaDeD: Automata-Based Debugging for Dissimilar Parallel Tasks
Today's largest systems have over 100,000 cores, with million-core systems expected over the next few years. This growing scale makes debugging the applications that run on them a daunting challenge. Few debugging tools perform well at this scale and most provide an overload of information about the entire job. Developers need tools that quickly direct them to the root cause of the problem. This paper presents AutomaDeD, a tool that identifies which tasks of a large-scale application first manifest a bug at a specific code region at a specific point during program execution. AutomaDeD creates a statistical model of the application's control-flow and timing behavior that organizes tasks into groups and identifies deviations from normal execution, thus significantly reducing debugging effort. In addition to a case study in which AutomaDeD locates a bug that occurred during development of MVAPICH, we evaluate AutomaDeD on a range of bugs injected into the NAS parallel benchmarks. Our results demonstrate that detects the time period when a bug first manifested itself with 90% accuracy for stalls and hangs and 70% accuracy for interference faults. It identifies the subset of processes first affected by the fault with 80% accuracy and 70% accuracy, respectively and the …
Date:
March 23, 2010
Creator:
Bronevetsky, G; Laguna, I; Bagchi, S; de Supinski, B R; Ahn, D & Schulz, M
Object Type:
Article
System:
The UNT Digital Library
Automated Political Telephone Calls ("Robo Calls") in Federal Campaigns: Overview and Policy Options
This report provides an overview of how automated political calls are used in federal campaigns, including attention to recent spending estimates and polling data regarding these calls. The report also discusses legislation that would affect the calls, with descriptions of various policy options and how the options or their regulation may be related to campaign finance law and to the First Amendment.
Date:
March 22, 2010
Creator:
Garrett, R. S. & Ruane, Kathleen Ann
Object Type:
Report
System:
The UNT Digital Library
Aviation Security: TSA Is Increasing Procurement and Deployment of the Advanced Imaging Technology, but Challenges to This Effort and Other Areas of Aviation Security Remain
Testimony issued by the Government Accountability Office with an abstract that begins "The attempted bombing of Northwest flight 253 highlighted the importance of detecting improvised explosive devices on passengers. This testimony focuses on (1) the Transportation Security Administration's (TSA) efforts to procure and deploy advanced imaging technology (AIT), and related challenges; and (2) TSA's efforts to strengthen screening procedures and technology in other areas of aviation security, and related challenges. This testimony is based on related products GAO issued from March 2009 through January 2010, selected updates conducted from December 2009 through March 2010 on the AIT procurement, and ongoing work on air cargo security. For the ongoing work and updates, GAO obtained information from the Department of Homeland Security (DHS) and TSA and interviewed senior TSA officials regarding air cargo security and the procurement, deployment, operational testing, and assessment of costs and benefits of the AIT."
Date:
March 17, 2010
Creator:
United States. Government Accountability Office.
Object Type:
Text
System:
The UNT Digital Library
[Awning at Kaigler's]
Photograph of the top floor exterior of a building above a blue awning at Kaigler's clothing store in Lockhart, Texas.
Date:
March 10, 2010
Creator:
Bell, Jim
Object Type:
Photograph
System:
The Portal to Texas History
Axions from cosmic string and wall decay
If inflation occurred with a reheat temperature > T{sub PQ}, axions from the decay of global axion strings and domain walls would make an important contribution to the cosmological energy density, comparable to that from vacuum misalignment. Several groups have numerically studied the evolution of axion strings and walls in the past, however substantial uncertainties remain in their contribution to the present density {Omega}{sub a,string+wall} {approx} 1-100 (f{sub a}/10{sup 12} GeV){sup 7/6}, where f{sub a} is the axion decay constant. I will describe the numerical methods used in our simulations and show results for several string and wall configurations.
Date:
March 10, 2010
Creator:
Hagmann, C A
Object Type:
Article
System:
The UNT Digital Library
Bacillus anthracis genome organization in light of whole transcriptome sequencing
Emerging knowledge of whole prokaryotic transcriptomes could validate a number of theoretical concepts introduced in the early days of genomics. What are the rules connecting gene expression levels with sequence determinants such as quantitative scores of promoters and terminators? Are translation efficiency measures, e.g. codon adaptation index and RBS score related to gene expression? We used the whole transcriptome shotgun sequencing of a bacterial pathogen Bacillus anthracis to assess correlation of gene expression level with promoter, terminator and RBS scores, codon adaptation index, as well as with a new measure of gene translational efficiency, average translation speed. We compared computational predictions of operon topologies with the transcript borders inferred from RNA-Seq reads. Transcriptome mapping may also improve existing gene annotation. Upon assessment of accuracy of current annotation of protein-coding genes in the B. anthracis genome we have shown that the transcriptome data indicate existence of more than a hundred genes missing in the annotation though predicted by an ab initio gene finder. Interestingly, we observed that many pseudogenes possess not only a sequence with detectable coding potential but also promoters that maintain transcriptional activity.
Date:
March 22, 2010
Creator:
Martin, Jeffrey; Zhu, Wenhan; Passalacqua, Karla D.; Bergman, Nicholas & Borodovsky, Mark
Object Type:
Article
System:
The UNT Digital Library
[Balcony Above Courthouse Entrance]
Photograph of an outside second floor balcony above the front entrance to the Comal County courthouse in New Braunfels, Texas. There is a bell tower visible on top of the building.
Date:
March 10, 2010
Creator:
Bell, Jim
Object Type:
Photograph
System:
The Portal to Texas History
[Balcony Above Courthouse Entrance]
Photograph of columns holding up the balcony above the front entrance to the Comal County courthouse in New Braunfels, Texas.
Date:
March 10, 2010
Creator:
Bell, Jim
Object Type:
Photograph
System:
The Portal to Texas History
[Balcony in County Courtroom]
Photograph of a second floor balcony in a courtroom in the Lee County courthouse in Giddings, Texas. Lamps and a fan hang from the ceiling.
Date:
March 9, 2010
Creator:
Bell, Jim
Object Type:
Photograph
System:
The Portal to Texas History
[Balcony in Courtroom]
Photograph of a balcony in a courtroom in the Lee County courthouse in Giddings, Texas.
Date:
March 9, 2010
Creator:
Bell, Jim
Object Type:
Photograph
System:
The Portal to Texas History
[Balcony in Courtroom]
Photograph of a second floor balcony in a courtroom in the Lee County courthouse in Giddings, Texas. Several lamps and a fan hang from the ceiling.
Date:
March 9, 2010
Creator:
Bell, Jim
Object Type:
Photograph
System:
The Portal to Texas History
[Balcony in Courtroom]
Photograph of a second floor balcony in a courtroom in Gonzales County courthouse in Gonzales, Texas.
Date:
March 10, 2010
Creator:
Bell, Jim
Object Type:
Photograph
System:
The Portal to Texas History
[Balcony on Courthouse]
Photograph of a second floor balcony on the exterior of the Gonzales County courthouse, above the front entrance, in Gonzales, Texas.
Date:
March 10, 2010
Creator:
Bell, Jim
Object Type:
Photograph
System:
The Portal to Texas History
Ballistic penetration test results for Ductal and ultra-high performance concrete samples.
This document provides detailed test results of ballistic impact experiments performed on several types of high performance concrete. These tests were performed at the Sandia National Laboratories Shock Thermodynamic Applied Research Facility using a 50 caliber powder gun to study penetration resistance of concrete samples. This document provides test results for ballistic impact experiments performed on two types of concrete samples, (1) Ductal{reg_sign} concrete is a fiber reinforced high performance concrete patented by Lafarge Group and (2) ultra-high performance concrete (UHPC) produced in-house by DoD. These tests were performed as part of a research demonstration project overseen by USACE and ERDC, at the Sandia National Laboratories Shock Thermodynamic Applied Research (STAR) facility. Ballistic penetration tests were performed on a single stage research powder gun of 50 caliber bore using a full metal jacket M33 ball projectile with a nominal velocity of 914 m/s (3000 ft/s). Testing was observed by Beverly DiPaolo from ERDC-GSL. In all, 31 tests were performed to achieve the test objectives which were: (1) recovery of concrete test specimens for post mortem analysis and characterization at outside labs, (2) measurement of projectile impact velocity and post-penetration residual velocity from electronic and radiographic techniques and, (3) high-speed photography …
Date:
March 1, 2010
Creator:
Reinhart, William Dodd & Thornhill, Tom Finley, III (KTech)
Object Type:
Report
System:
The UNT Digital Library
Band Collapse and the Quantum Hall Effect in Graphene
The recent Quantum Hall experiments in graphene have confirmed the theoretically well-understood picture of the quantum Hall (QH) conductance in fermion systems with continuum Dirac spectrum. In this paper we take into account the lattice, and perform an exact diagonalization of the Landau problem on the hexagonal lattice. At very large magnetic fields the Dirac argument fails completely and the Hall conductance, given by the number of edge states present in the gaps of the spectrum, is dominated by lattice effects. As the field is lowered, the experimentally observed situation is recovered through a phenomenon which we call band collapse. As a corollary, for low magnetic field, graphene will exhibit two qualitatively different QHE's: at low filling, the QHE will be dominated by the 'relativistic' Dirac spectrum and the Hall conductance will be odd-integer; above a certain filling, the QHE will be dominated by a non-relativistic spectrum, and the Hall conductance will span all integers, even and odd.
Date:
March 16, 2010
Creator:
Bernevig, B.Andrei; Hughes, Taylor L.; Zhang, Shou-Cheng; /Stanford U., Phys. Dept.; Chen, Han-Dong; /Illinois U., Urbana et al.
Object Type:
Article
System:
The UNT Digital Library
Barrier Coatings for Thin Film Solar Cells: Final Subcontract Report, September 1, 2002 -- January 30, 2008
This program has involved investigations of the stability of CdTe and copper-indium-gallium-diselenide (CIGS) solar cells under damp heat conditions and effects of barrier coatings.
Date:
March 1, 2010
Creator:
Olsen, L. C.
Object Type:
Report
System:
The UNT Digital Library
[Base of a Monument]
Photograph of a base of a monument to the soldiers of the Confederate States of America on the lawn of the Bastrop County courthouse in Bastrop, Texas.
Date:
March 9, 2010
Creator:
Bell, Jim
Object Type:
Photograph
System:
The Portal to Texas History
[Base of Columns on Courthouse]
Photograph of the base of columns on the exterior of the Caldwell County courthouse in Lockhart, Texas.
Date:
March 10, 2010
Creator:
Bell, Jim
Object Type:
Photograph
System:
The Portal to Texas History