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Critical Infrastructure Protection: Update to National Infrastructure Protection Plan Includes Increased Emphasis on Risk Management and Resilience

Description: A letter report issued by the Government Accountability Office with an abstract that begins "According to the Department of Homeland Security (DHS), there are thousands of facilities in the United States that if destroyed by a disaster could cause casualties, economic losses, or disruptions to national security. The Homeland Security Act of 2002 gave DHS responsibility for leading and coordinating the nation's effort to protect critical infrastructure and key resources (CIKR). Homeland Security… more
Date: March 5, 2010
Creator: United States. Government Accountability Office.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Recovery Act: California's Use of Funds and Efforts to Ensure Accountability

Description: Testimony issued by the Government Accountability Office with an abstract that begins "The American Recovery and Reinvestment Act of 2009 (Recovery Act) specifies several roles for GAO, including conducting bimonthly reviews of selected states' and localities' use of funds made available under the act. This testimony is based on GAO's bimonthly work in California, where the Recovery Act provided more than $85 billion--or about 10 percent of the funds available nationally--for program funding an… more
Date: March 5, 2010
Creator: United States. Government Accountability Office.
Item Type: Refine your search to only Text
Partner: UNT Libraries Government Documents Department
open access

Cybersecurity: Progress Made but Challenges Remain in Defining and Coordinating the Comprehensive National Initiative

Description: A letter report issued by the Government Accountability Office with an abstract that begins "In response to the ongoing threats to federal systems and operations posed by cyber attacks, President Bush established the Comprehensive National Cybersecurity Initiative (CNCI) in 2008. This initiative consists of a set of projects aimed at reducing vulnerabilities, protecting against intrusions, and anticipating future threats. GAO was asked to determine (1) what actions have been taken to develop in… more
Date: March 5, 2010
Creator: United States. Government Accountability Office.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Energy Star Program: Covert Testing Shows the Energy Star Program Certification Process Is Vulnerable to Fraud and Abuse

Description: A letter report issued by the Government Accountability Office with an abstract that begins "American consumers, businesses, and federal agencies rely on the Energy Star program to identify products that decrease greenhouse emissions and lower energy costs. In addition, the federal government and various states offer tax credits and other incentives to encourage the use of energy-efficient products including Energy Star products. Specifically, approximately $300 million from the American Recove… more
Date: March 5, 2010
Creator: United States. Government Accountability Office.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Visualization and Analysis-Oriented Reconstruction of Material Interfaces

Description: Reconstructing boundaries along material interfaces from volume fractions is a difficult problem, especially because the under-resolved nature of the input data allows for many correct interpretations. Worse, algorithms widely accepted as appropriate for simulation are inappropriate for visualization. In this paper, we describe a new algorithm that is specifically intended for reconstructing material interfaces for visualization and analysis requirements. The algorithm performs well with respec… more
Date: March 5, 2010
Creator: Childs, Henry R.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Mechanisms underlying cellular responses of cells from haemopoietic tissue to low dose/low LET radiation

Description: To accurately define the risks associated with human exposure to relevant environmental doses of low LET ionizing radiation, it is necessary to completely understand the biological effects at very low doses (i.e., less than 0.1 Gy), including the lowest possible dose, that of a single electron track traversal. At such low doses, a range of studies have shown responses in biological systems which are not related to the direct interaction of radiation tracks with DNA. The role of these “non-targe… more
Date: March 5, 2010
Creator: Kadhim, Munira A
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

High-Power Electrostatic Discharges in PETN: Threshold and Scaling Experiments

Description: There is a considerable set of data establishing the safety of PETN-based detonators that are insulted by electrostatic discharge (ESD) from a human body. However, the subject of ESD safety has garnered renewed interest because of the sparse data on high-power, low-impedance discharges that result when the source is a metallic object such as a tool. Experiments on as-built components, using pin-to-cap fault circuits through PETN-based detonators, showed significant evidence of a power dependenc… more
Date: March 5, 2010
Creator: Liou, W.; McCarrick, J. F.; Hodgin, R. L. & Phillips, D. F.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Propagation of Reactions in Thermally-damaged PBX-9501

Description: A thermally-initiated explosion in PBX-9501 (octahydro-1,3,5,7-tetranitro-1,3,5,7-tetrazocine) is observed in situ by flash x-ray imaging, and modeled with the LLNL multi-physics arbitrary-Lagrangian-Eulerian code ALE3D. The containment vessel deformation provides a useful estimate of the reaction pressure at the time of the explosion, which we calculate to be in the range 0.8-1.4 GPa. Closely-coupled ALE3D simulations of these experiments, utilizing the multi-phase convective burn model, provi… more
Date: March 5, 2010
Creator: Tringe, J W; Glascoe, E A; Kercher, J R; Willey, T M; Springer, H K; Greenwood, D W et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Thermal Degradation Studies of Polyurethane/POSS Nanohybrid Elastomers

Description: Reported here is the synthesis of a series of Polyurethane/POSS nanohybrid elastomers, the characterization of their thermal stability and degradation behavior at elevated temperatures using a combination of Thermal Gravimetric Analysis (TGA) and Thermal Volatilization Analysis (TVA). A series of PU elastomers systems have been formulated incorporating varying levels of 1,2-propanediol-heptaisobutyl-POSS (PHIPOSS) as a chain extender unit, replacing butane diol. The bulk thermal stability of th… more
Date: March 5, 2010
Creator: Lewicki, J P; Pielichowski, K; TremblotDeLaCroix, P; Janowski, B; Todd, D & Liggat, J J
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Pressure-induced isostructural transition in PdN2

Description: We show that a synthesized Pd-N compound crystallize into the pyrite structure by comparison of experimental and calculated Raman intensities. The decreasing Raman intensities with decreasing pressure is explained by a closing of the fundamental band gap. We further discuss the experimental decomposition of this compound at 11 GPa in terms of an isostructural transition within the pyrite structure.
Date: March 5, 2010
Creator: Aberg, D; Erhart, P; Crowhurst, J; Zaug, J M; Goncharov, A F & Sadigh, B
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Towards the understanding of PETN initiation by a fast, high power arc source

Description: We present a thorough characterization of a capacitor driven arc source that can deliver up to 200 mJ of energy to the arc and high explosive in a well-controlled, repeatable manner on the hundreds of nanoseconds time-scale. Our ultimate purpose is to create a platform to study high explosive kinetics under extreme conditions of high-temperature. In the current paper, we characterize the behavior of our arc source by electrical discharge over a thin PETN film. Temperature and density are determ… more
Date: March 5, 2010
Creator: Grant, C D; Tang, V; Glascoe, E A & McCarrick, J F
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Comparison of the Growth of Pore and Shear Band Driven Detonations

Description: The authors examine the effect of ignition site topology on the rate of reaction of a detonating material. The hot plane, hot line, and hot finite patch topologies are added to previous work on hot spot ignition. The hot plane and hot patch ignition forms would arise from ignition due to shear banding, and the hot line ignition form is shown to complete the topological set. The limiting behavior of instantaneous ignition is considered and used to construct simple reaction rate vs. extent of rea… more
Date: March 5, 2010
Creator: Nichols, A. L.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Improved Modeling and Understanding of Diffusion-Media Wettability on Polymer-Electrolyte-Fuel-Cell Performance

Description: A macroscopic-modeling methodology to account for the chemical and structural properties of fuel-cell diffusion media is developed. A previous model is updated to include for the first time the use of experimentally measured capillary pressure -- saturation relationships through the introduction of a Gaussian contact-angle distribution into the property equations. The updated model is used to simulate various limiting-case scenarios of water and gas transport in fuel-cell diffusion media. An… more
Date: March 5, 2010
Creator: Weber, Adam
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Fracture Induced Sub-Band Absorption as a Precursor to Optical Damage on Fused Silica Surfaces

Description: The optical damage threshold of indentation induced flaws on fused silica surfaces was explored. Mechanical flaws were characterized by laser damaged testing, SEM, optical, and photoluminescence microscopy. Localized polishing, chemical etching, and the control of indentation morphology were used to isolate the structural features which limit optical damage. A thin defect layer on fracture surfaces, including those smaller than the wavelength of visible light, was found to be the dominant sourc… more
Date: March 5, 2010
Creator: Miller, P E; Bude, J D; Suratwala, T I; Shen, N; Laurence, T A; Steele, W A et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Brazil-U.S. Relations

Description: This report analyzes Brazil's political, economic, and social conditions, and how those conditions affect its role in the region and its relationship with the United States.
Date: March 5, 2010
Creator: Meyer, Peter J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Managing the Nuclear Fuel Cycle: Policy Implications of Expanding Global Access to Nuclear Power

Description: This report discusses motivating factors underlying the resurgent interest in nuclear power, the nuclear power industry's current state of affairs, and the interdependence of the various stages of the nuclear fuel cycle. A number of proposals have been offered that are aimed at limiting direct participation in the global nuclear fuel industry by assuring access to nuclear fuel supplies.
Date: March 5, 2010
Creator: Nikitin, Mary Beth; Andrews, Anthony & Holt, Mark
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department

[Woman and man in Pepsico offices]

Description: A photograph of two people standing together at the Pepsico offices. A couch, staircase, and hallway are visible behind them. There are also logos on the floor and the staircase behind them.
Date: March 5, 2010
Creator: University of North Texas. Multicultural Center.
Item Type: Refine your search to only Photograph
Partner: UNT Libraries Special Collections
open access

Documented Safety Analysis for the Waste Storage Facilities March 2010

Description: This Documented Safety Analysis (DSA) for the Waste Storage Facilities was developed in accordance with 10 CFR 830, Subpart B, 'Safety Basis Requirements,' and utilizes the methodology outlined in DOE-STD-3009-94, Change Notice 3. The Waste Storage Facilities consist of Area 625 (A625) and the Decontamination and Waste Treatment Facility (DWTF) Storage Area portion of the DWTF complex. These two areas are combined into a single DSA, as their functions as storage for radioactive and hazardous wa… more
Date: March 5, 2010
Creator: Laycak, D T
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

International Species Conservation Funds

Description: This report provides a brief overview of Multinational Species Conservation Fund (MSCF) and Neotraopical Migratory Bird Conservation Fund (NMBCF) and their funding and possible changes to appropriations.
Date: March 5, 2010
Creator: Sheikh, Pervaze A. & Corn, Lynne M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Greenhouse Gas Emission Drivers: Population, Economic Development and Growth, and Energy Use

Description: The interactions of three variables underlie debates on the issue of climate change and what responses might be justified: the magnitude and rates of change of (1) population growth, (2) incomes, and (3) intensity of greenhouse gas emissions relative to economic activities. This report examines the interrelationships of the variables to explore their implications for policies that address climate change.
Date: March 5, 2010
Creator: Blodgett, John & Parker, Larry
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department

Ensemble: 2010-03-05 – Opera and Symphony Orchestra

Description: Recording of the second Friday evening performance of the opera "Prodaná nevěsta (The Bartered Bride)" at the UNT College of Music Lyric Theater.
Access: Restricted to UNT Community Members. Login required if off-campus.
Date: March 5, 2010, 8:00 p.m.
Duration: 2 hours 4 minutes 42 seconds
Creator: University of North Texas. Division of Vocal Studies. Opera.
Item Type: Refine your search to only Sound
Location: 33.206333 -97.155065
Partner: UNT Music Library
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