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Nuclear Waste: DOE Lacks Critical Information Needed to Assess Its Tank Management Strategy at Hanford

Description: A letter report issued by the Government Accountability Office with an abstract that begins "The Department of Energy (DOE) manages more than 56 million gallons of radioactive and hazardous waste stored in 149 single-shell and 28 double-shell underground tanks at its Hanford Site in Washington State. Many of these aging tanks have already leaked waste into the soil. Meanwhile, DOE's planned process for emptying the tanks and treating the waste--mixing it with molten glass and solidifying it in … more
Date: June 30, 2008
Creator: United States. Government Accountability Office.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Veterans Affairs: Health Information System Modernization Far from Complete; Improved Project Planning and Oversight Needed

Description: A letter report issued by the Government Accountability Office with an abstract that begins "The Department of Veterans Affairs (VA), through its Veterans Health Administration (VHA), provides health care for more than 5 million veterans each year. In 2001, VHA began an initiative, HealtheVet, to modernize its current medical information system. GAO's objectives were to determine the status of the modernization, VA's overall plan for completing it, and how VA is providing oversight to ensure th… more
Date: June 30, 2008
Creator: United States. Government Accountability Office.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Nuclear Safety: NRC's Oversight of Fire Protection at U.S. Commercial Nuclear Reactor Units Could Be Strengthened

Description: A letter report issued by the Government Accountability Office with an abstract that begins "After a 1975 fire at the Browns Ferry nuclear plant in Alabama threatened the unit's ability to shut down safely, the Nuclear Regulatory Commission (NRC) issued prescriptive fire safety rules for commercial nuclear units. However, nuclear units with different designs and different ages have had difficulty meeting these rules and have sought exemptions to them. In 2004, NRC began to encourage the nation'… more
Date: June 30, 2008
Creator: United States. Government Accountability Office.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Long-Term Care Insurance: Oversight of Rate Setting and Claims Settlement Practices

Description: A letter report issued by the Government Accountability Office with an abstract that begins "As the baby boom generation ages, the demand for long-term care services, which include nursing home care, is likely to grow and could strain state and federal resources. The increased use of long-term care insurance (LTCI) may be a way of reducing the share of long-term care paid by state and federal governments. Oversight of LTCI is primarily the responsibility of states, but over the past 12 years, t… more
Date: June 30, 2008
Creator: United States. Government Accountability Office.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Commercial Drivers: Certification Process for Drivers with Serious Medical Conditions

Description: A letter report issued by the Government Accountability Office with an abstract that begins "Millions of drivers hold commercial driver licenses (CDL), allowing them to operate commercial vehicles. The Department of Transportation (DOT) established regulations requiring medical examiners to certify that these drivers are medically fit to operate their vehicles and provides oversight of their implementation. Little is known on the extent to which individuals with serious medical conditions hold … more
Date: June 30, 2008
Creator: United States. Government Accountability Office.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Highlights of the Joint Forum on Tax Compliance: Options for Improvement and Their Budgetary Potential

Description: Other written product issued by the Government Accountability Office with an abstract that begins "The tax gap--the difference between the tax amounts taxpayers pay voluntarily and on time and what they should pay under the law--has been a long-standing problem in spite of many efforts to reduce it. When some taxpayers fail to comply, the burden of funding the nation's commitments falls more heavily on compliant taxpayers. reducing the tax gap would help improve the nation's fiscal stability. F… more
Date: June 30, 2008
Creator: United States. Government Accountability Office.
Item Type: Refine your search to only Text
Partner: UNT Libraries Government Documents Department
open access

Examples of Job Hopping by Commercial Drivers After Failing Drug Tests

Description: Correspondence issued by the Government Accountability Office with an abstract that begins "Millions of American drivers hold commercial driver's licenses (CDL), allowing them to operate a variety of commercial vehicles, such as school buses, cargo vans, and tractor trailers. While most commercial drivers do not test positive for drugs and alcohol, Department of Transportation (DOT) data show that each year from 1994 through 2005, from 1.3 percent to 2.8 percent of truck drivers tested positive… more
Date: June 30, 2008
Creator: United States. Government Accountability Office.
Item Type: Refine your search to only Text
Partner: UNT Libraries Government Documents Department
open access

Using SPARK as a Solver for Modelica

Description: Modelica is an object-oriented acausal modeling language that is well positioned to become a de-facto standard for expressing models of complex physical systems. To simulate a model expressed in Modelica, it needs to be translated into executable code. For generating run-time efficient code, such a translation needs to employ algebraic formula manipulations. As the SPARK solver has been shown to be competitive for generating such code but currently cannot be used with the Modelica language, we … more
Date: June 30, 2008
Creator: Wetter, Michael; Wetter, Michael; Haves, Philip; Moshier, Michael A. & Sowell, Edward F.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Atmospheric Properties from the 2006 Niamey Deployment and Climate Simulation with a Geodesic Grid Coupled Climate Model Third Quarter 2008

Description: In 2008, the Atmospheric Radiation Measurement (ARM) Program and the Climate Change Prediction Program (CCPP) have been asked to produce joint science metrics. For CCPP, the metrics will deal with a decade-long control simulation using geodesic grid-coupled climate model. For ARM, the metrics will deal with observations associated with the 2006 deployment of the ARM Mobile Facility (AMF) to Niamey, Niger. Specifically, ARM has been asked to deliver data products for Niamey that describe cloud, … more
Date: June 30, 2008
Creator: Mather, JH; Randall, DA & Flynn, CJ
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Shot-Noise Seeded Microbunching Instability: Second-Order Correction to the Gain Function

Description: We determine the second-order correction to the gain function of the microbunching instability in single-pass systems of interest for the next generation of light sources. The calculation applies to the case where the instability is seeded by shot noise. We examine an analytically treatable model of beam dynamics where collective forces are active only in non-dispersive sections of the linac. We find that the second order term can augment the linear gain significantly while affecting the spectr… more
Date: June 30, 2008
Creator: Venturini, Marco
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Strategies to Address Identified Education Gaps in the Preparation of a National Security Workforce

Description: This report will discuss strategies available to address identified gaps and weaknesses in education efforts aimed at the preparation of a skilled and properly trained national security workforce.The need to adequately train and educate a national security workforce is at a critical juncture. Even though there are an increasing number of college graduates in the appropriate fields, many of these graduates choose to work in the private sector because of more desirable salary and benefit packages… more
Date: June 30, 2008
Item Type: Refine your search to only Text
Partner: UNT Libraries Government Documents Department
open access

Commercial Off-the-Shelf (COTS) Components and Enterprise Component Information System (eCIS)

Description: The purpose of the project was to develop the processes for using commercial off-the-shelf (COTS) parts for WR production and to put in place a system for implementing the data management tools required to disseminate, store, track procurement, and qualify vendors. Much of the effort was devoted to determining if the use of COTS parts was possible. A basic question: How does the Nuclear Weapons Complex (NWC) begin to use COTS in the weapon Stockpile Life Extension Programs with high reliability… more
Date: June 30, 2008
Creator: Minihan, John; Schmidt, Ed; Enserro, Greg & Thompson, Melissa
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

A New Type of Steady and Stable, Laminar, Premixed Flame in Ultra-Lean, Hydrogen-Air Combustion

Description: Ultra-lean, hydrogen-air mixtures are found to support another kind of laminar flame that is steady and stable beside flat flames and flame balls. Direct numerical simulations are performed of flames that develop into steadily and stably propagating cells. These cells were the original meaning of the word"flamelet'' when they were observed in lean flammability studies conducted early in the development of combustion science. Several aspects of these two-dimensional flame cells are … more
Date: June 30, 2008
Creator: Grcar, Joseph F. & Grcar, Joseph F
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

A Bio-Based Fuel Cell for Distributed Energy Generation

Description: The technology we propose consists primarily of an improved design for increasing the energy density of a certain class of bio-fuel cell (BFC). The BFCs we consider are those which harvest electrons produced by microorganisms during their metabolism of organic substrates (e.g. glucose, acetate). We estimate that our technology will significantly enhance power production (per unit volume) of these BFCs, to the point where they could be employed as stand-alone systems for distributed energy gener… more
Date: June 30, 2008
Creator: Terrinoni, Anthony & Gifford, Sean
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Wide-Area Energy Storage and Management system to Balance Intermittent Resources in the Bonneville Power Administration and California ISO Control Areas

Description: The entire project addresses the issue of mitigating additional intermittency and fast ramps that occur at higher penetration of intermittent resources, including wind genera-tion, in the Bonneville Power Administration (BPA) and the California Independent Sys-tem Operator (California ISO) control areas. The proposed Wide Area Energy Storage and Management System (WAEMS) will address the additional regulation requirement through the energy exchange between the participating control areas and th… more
Date: June 30, 2008
Creator: Makarov, Yuri V.; Yang, Bo; DeSteese, John G.; Lu, Shuai; Miller, Carl H.; Nyeng, Preben et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Hierarchical Adaptive Solution of Radiation Transport Problems on Unstructured Grids

Description: Computational radiation transport has steadily gained acceptance in the last decade as a viable modeling tool due to the rapid advancements in computer software and hardware technologies. It can be applied for the analysis of a wide range of problems which arise in nuclear reactor physics, medical physics, atmospheric physics, astrophysics and other areas of engineering physics. However, radiation transport is an extremely chanllenging computational problem since the governing equation is seven… more
Date: June 30, 2008
Creator: Oliveira, Dr. Cassiano R. E de
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

The Soret Effect in Naturally Propagating, Premixed, Lean, Hydrogen-Air Flames

Description: Comparatively little attention has been given to multicomponent diffusion effects in lean hydrogen-air flames, in spite of the importance of these flames in safety and their potential importance to future energy technologies. Prior direct numerical simulations either have considered only the mixture-averaged transport model, or have been limited to stabilized flames that do not exhibit the thermo-diffusive instability. The so-called full, multicomponent transport model with cross-diffusion is f… more
Date: June 30, 2008
Creator: Grcar, Joseph F.; Grcar, Joseph F.; Bell, John B. & Day, Marcus S.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Reduction of Water Use in Wet FGD Systems

Description: Cooperative Agreement DE-FC26-06NT42726 was established in January 2006, and is current through Amendment 2, April 2006. The current reporting period, April 1, 2008 through June 30, 2008, is the eighth progress-reporting period for the project. However, this report will be the final report (instead of a quarterly report) because this project is being terminated. Efforts to bring this project to a close over the past several months focused on internal project discussions, and subsequent communic… more
Date: June 30, 2008
Creator: Rencher, David
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Demonstration and Validation Assets: User Manual Development

Description: This report documents the development of a database-supported user manual for DEMVAL assets in the NSTI area of operations and focuses on providing comprehensive user information on DEMVAL assets serving businesses with national security technology applications in southern New Mexico. The DEMVAL asset program is being developed as part of the NSPP, funded by both Department of Energy (DOE) and NNSA. This report describes the development of a comprehensive user manual system for delivering index… more
Date: June 30, 2008
Item Type: Refine your search to only Text
Partner: UNT Libraries Government Documents Department
open access

A Modular Building Controls Virtual Test Bed for the Integrations of Heterogeneous Systems

Description: This paper describes the Building Controls Virtual Test Bed (BCVTB) that is currently under development at Lawrence Berkeley National Laboratory. An earlier prototype linked EnergyPlus with controls hardware through embedded SPARK models and demonstrated its value in more cost-effective envelope design and improved controls sequences for the San Francisco Federal Building. The BCVTB presented here is a more modular design based on a middleware that we built using Ptolemy II, a modular software … more
Date: June 30, 2008
Creator: Wetter, Michael; Wetter, Michael & Haves, Philip
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Imaging Reservoir Quality: Seismic Signatures of Geologic Processes

Description: Lithofacies successions from diverse depositional environments show distinctive patterns in various rock-physics planes (velocity-porosity, velocity-density and porosity-clay). Four clear examples of decameter-scale lithofacies sequences are documented in this study: (1) Micocene fluvial deposits show an inverted-V pattern indicative of dispersed fabric, (2) a fining-upward sequence of mud-rich deep deposits shows a linear trend associated with laminated sand-clay mixtures, (3) sand-rich deposi… more
Date: June 30, 2008
Creator: Stanford University. Department of Geophysics.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Fundamental Studies of Ignition Process in Large Natural Gas Engines Using Laser Spark Ignition

Description: Past research has shown that laser ignition provides a potential means to reduce emissions and improve engine efficiency of gas-fired engines to meet longer-term DOE ARES (Advanced Reciprocating Engine Systems) targets. Despite the potential advantages of laser ignition, the technology is not seeing practical or commercial use. A major impediment in this regard has been the 'open-path' beam delivery used in much of the past research. This mode of delivery is not considered industrially practica… more
Date: June 30, 2008
Creator: Yalin, Azer & Willson, Bryan
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Technology demonstration for reducing mercury emissions from small-scale gold refining facilities.

Description: Gold that is brought from artisanal and small-scale gold mining areas to gold shops for processing and sale typically contains 5-40% mercury. The uncontrolled removal of the residual mercury in gold shops by using high-temperature evaporation can be a significant source of mercury emissions in urban areas where the shops are located. Emissions from gold shop hoods during a burn can exceed 1,000 mg/m{sup 3}. Because the saturation concentration of mercury vapor at operating temperatures at the h… more
Date: June 30, 2008
Creator: Habegger, L. J.; Fernandez, L. E.; Engle, M.; Bailey, J. L.; Peterson, D. P.; MacDonell, M. M. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

FTR GO14246

Description: The Maine Forest Bioproducts Research and Development project originally focused on the State’s interest in the development of an integrated forest products refinery (IFPR). The original intent was that Research and Development (R&D) funded by this award will allow Maine to refine its strategy and pursue development of an integrated biorefinery. Activities were to be divided into three major R&D projects: (a) Establish the potential for a forest products biorefinery in Maine, by determining the… more
Date: June 30, 2008
Creator: Bentley, Martha
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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