Veterans' Benefits: Quality Assurance for Disability Claims Processing (open access)

Veterans' Benefits: Quality Assurance for Disability Claims Processing

Correspondence issued by the General Accounting Office with an abstract that begins "Congress, the Department of Veterans Affairs, and veterans service organizations have all raised concerns about the accuracy of claims processing in the Veterans Benefits Administration (VBA). In 1998, VBA launched its systematic technical accuracy review (STAR) system to better measure the accuracy of claims processing. The system determines accuracy rates for (1) the nation as a whole, (2) each VBA service delivery network, and (3) each VBA regional office. GAO reported in 1999 that the accuracy rates for claims processing at regional offices was being determined by regional staff who themselves were involved in processing claims and who reported to managers responsible for claims processing. This arrangement did not meet either the government's internal control standard calling for the segregation of key duties or the performance audit standard calling for organizational independence for those who review and evaluate program performance. Congress subsequently required VBA to institute a quality assurance program that met government standards. VBA plans to modify the STAR system by October 1, 2001, to bring it into compliance with the standards on the segregation of duties and organizational independence. All STAR reviews will be done by …
Date: August 23, 2001
Creator: United States. General Accounting Office.
Object Type: Text
System: The UNT Digital Library
Synthesis of Amino- and Nitro-Substituted Heterocycles as Insensitive Energetic Materials (open access)

Synthesis of Amino- and Nitro-Substituted Heterocycles as Insensitive Energetic Materials

In this paper we will describe the synthesis of several amino- and nitro-substituted heterocycles, examples from a continuing research project targeted at the synthesis of new, insensitive energetic materials that possess at least 80% the power of HMX (28% more power than TATB). Recently we reported the synthesis and scale-up of the insensitive energetic material, 2,6-diamino-3,5-dinitropyrazine-1-oxide (LLM-105). The energy content (81% the power of HMX) and thermal stability of LLM-105 make it a viable candidate material for insensitive boosters and deep oil perforation. We will report on recent synthetic improvements and several performance and safety tests performed on LLM-105, including a 1 in. cylinder shot and plate dent. We will also report on the synthesis and characterization of 4-amino-3,5-dinitropyrazole (LLM-116), an interesting new insensitive energetic material with a measured crystal density of 1.90 g/cc, to our knowledge the highest density yet measured for a five-membered heterocycle containing amino- and nitro-substituents. LLM-116 was synthesized by reacting 3,5-dinitropyrazole with 1,1,1-trimethylhydrazinium iodide (TMHI) in DMSO in the presence of base. The synthesis and characterization of 4-amino-5-nitro-1,2,3-triazole (ANTZ) and 43-dinitro-1,2,3-triazole (DNTZ), first described by Baryshnikov and coworkers, will also be presented along with the synthesis of several new energetic materials derived from ANTZ and …
Date: August 23, 2001
Creator: Pagoria, P. F.; Lee, G. S.; Mitchell, A. R. & Schmidt, R. D.
Object Type: Article
System: The UNT Digital Library
Molten Salt Oxidation: A Thermal Technology for Waste Treatment and Demilitarization (open access)

Molten Salt Oxidation: A Thermal Technology for Waste Treatment and Demilitarization

MSO is a good alternative to incineration for the treatment of a variety of organic wastes including obsolete explosives, low-level mixed waste streams, PCB contaminated oils, spent resins and carbon. The Lawrence Livermore National Laboratory (LLNL) has demonstrated the MSO process for the effective destruction of explosives, explosives-contaminated materials, and other wastes on a 1.5 kg/hr bench-scale unit and in an integrated MSO facility capable of treating 8 kg/hr of low-level radioactive mixed wastes. LLNL, under the direction and support of the Joint Demilitarization Technology (JDT) program, is currently building an integrated MSO plant for destroying explosives, explosives-contaminated sludge and explosives-contaminated activated charcoal. In a parallel effort, LLNL also provides technical support to DOE for the implementation of the MSO technology at industrial scale at Richland, Washington. Over 30 waste streams have been demonstrated with LLNL-built MSO systems. In this paper we will present our latest experimental data, our operational experience with MSO and also discuss its process capabilities.
Date: August 23, 2001
Creator: Hsu, P C; Watkins, B; Pruneda, C & Kwak, S
Object Type: Article
System: The UNT Digital Library
Final report, DOE Award No. DE-FG02-86ER13504 [Photoinduced electron transfer processes in homogeneous & microheterogeneous solutions] (open access)

Final report, DOE Award No. DE-FG02-86ER13504 [Photoinduced electron transfer processes in homogeneous & microheterogeneous solutions]

The focus of this research has been the study and development of useful chemical reactions initiated via photoinduced electron transfer events.
Date: August 23, 2001
Creator: Whitten, David G.
Object Type: Report
System: The UNT Digital Library
Development and use of GREET 1.6 fuel-cycle model for transportation fuels and vehicle technologies. (open access)

Development and use of GREET 1.6 fuel-cycle model for transportation fuels and vehicle technologies.

Since 1995, with funds from the U.S. Department of Energy's (DOE's) Office of Transportation Technologies (OTT), Argonne National Laboratory has been developing the Greenhouse gases, Regulated Emissions, and Energy use in Transportation (GREET) model. The model is intended to serve as an analytical tool for use by researchers and practitioners in estimating fuel-cycle energy use and emissions associated with alternative transportation fuels and advanced vehicle technologies. Argonne released the first version of the GREET mode--GREET 1.0--in June 1996. Since then, it has released a series of GREET versions with revisions, updates, and upgrades. In February 2000, the latest public version of the model--GREET 1.5a--was posted on Argonne's Transportation Technology Research and Development Center (TTRDC) Web site (www.transportation.anl.gov/ttrdc/greet).
Date: August 23, 2001
Creator: Wang, M. Q.
Object Type: Report
System: The UNT Digital Library
Well-to-tank energy use and greenhouse gas emissions of transportation fuels vol. 1, 2, 3. (open access)

Well-to-tank energy use and greenhouse gas emissions of transportation fuels vol. 1, 2, 3.

There are differing yet strongly held views among the various ''stakeholders'' in the advanced fuel/propulsion system debate. In order for the introduction of advanced technology vehicles and their associated fuels to be successful, it seems clear that four important stakeholders must view their introduction as a ''win'': (1) Society, (2) Automobile manufacturers and their key suppliers, (3) Fuel providers and their key suppliers, and (4)Auto and energy company customers. If all four of these stakeholders, from their own perspectives, are not positive regarding the need for and value of these advanced fuels/vehicles, the vehicle introductions will fail. This study was conducted to help inform public and private decision makers regarding the impact of the introduction of such advanced fuel/propulsion system pathways from a societal point of view. The study estimates two key performance criteria of advanced fuel/propulsion systems on a total system basis, that is, ''well'' (production source of energy) to ''wheel'' (vehicle). These criteria are energy use and greenhouse gas emissions per unit of distance traveled. The study focuses on the U.S. light-duty vehicle market in 2005 and beyond, when it is expected that advanced fuels and propulsion systems could begin to be incorporated in a significant percentage of …
Date: August 23, 2001
Creator: unknown
Object Type: Report
System: The UNT Digital Library
Department of Agriculture: Status of Achieving Key Outcomes and Addressing Major Management Challenges (open access)

Department of Agriculture: Status of Achieving Key Outcomes and Addressing Major Management Challenges

A letter report issued by the General Accounting Office with an abstract that begins "The Department of Agriculture's (USDA) fiscal year 2000 performance report and fiscal year 2002 performance plan have the potential for focusing the department's missions, but these efforts are compromised in several areas. USDA's goals and measures are too general to give insight into what USDA is actually trying to achieve. It is difficult to assess USDA's progress when it uses unrealistic goals to achieve strategic outcomes and when it uses untimely data that has not been consistently verified. In two areas--strategic human capital management and information security--progress in measuring USDA's performance has been frustrated by the lack of goals and measures for identified issues. Finally, by not sharing information about the major management challenges identified by its own Inspector General, USDA's agencies miss the opportunity to develop strategies and plans to respond to these issues."
Date: August 23, 2001
Creator: United States. General Accounting Office.
Object Type: Report
System: The UNT Digital Library
Multi-Kilovolt X-Ray Conversion Efficiencies (open access)

Multi-Kilovolt X-Ray Conversion Efficiencies

X-ray sources in the 3-7 keV energy regime can be produced by laser-irradiating mid- and high-Z gas-filled targets with high-powered lasers. A series of experiments have been performed using underdense targets that are supersonically heated with {approx} 35 kJ of 0.35 {micro}m laser light. These targets were cylindrical Be enclosures that were filled with 1-2 atms of Xe or Ar gas. L-shell x-ray emission is emitted from the plasma and detected by Bragg crystal spectrometers and x-ray diodes. Absolute flux measurements show conversion efficiencies of {approx} 10% in the multi-kilovolt x-ray emission. These sources can be used as bright x-ray backlighters or for material testing.
Date: August 23, 2001
Creator: Back, C. A.; Davis, J. L.; Grun, J.; Landen, O. L.; Miller, M. C. & Suter, L. J.
Object Type: Article
System: The UNT Digital Library
Target Designs for an Inertial Fusion Energy Power Plant Driven by Heavy Ions (open access)

Target Designs for an Inertial Fusion Energy Power Plant Driven by Heavy Ions

We present two indirect drive inertial fusion targets driven by heavy ions beams for fusion energy production. Because there are uncertainties in the ion beam focal spot size and uncertainties in the accelerator cost, we have tried to design targets that cover a large parameter space. One of the designs requires small ion beam focal spots but produces more than adequate gain at low driver energy (gain 130 from 3.3 MJ of beam energy). The other design allows a large beam spot, but requires more driver energy (gain 55 from 6.7 MJ of beam energy). Target physics issues as well as the implications for the accelerator from each design are discussed.
Date: August 23, 2001
Creator: Callahan, D A & Tabak, M
Object Type: Article
System: The UNT Digital Library
Recent Progress in the Scale-Up of TATB by the VNS Method (open access)

Recent Progress in the Scale-Up of TATB by the VNS Method

The explosive TATB is used in the Department of Energy's main charges and boosters, where its extraordinary insensitivity to impact, spark and heat make it highly advantageous. This IHE is also used in booster applications in naval weapons, and is being tested as a main charge fill for hard target penetrator projectiles. (Slides 2-5) In order to meet demand, a continuing supply of TATB will be required. However, no production base exists in the U.S. for TATB production, and processes once used to make TATB are relatively expensive, complicated, and considered environmentally hazardous (Slide 6). The primary objective of this project is to reestablish the industrial base for TATB production, using LLNL's new Vicarious Nucleophilic Substitution (VNS) methodology. A secondary objective is to enable a reduction in the cost of TATB production, thus making this explosive attractive to U.S. Department of Defense and commercial customers. This presentation will update information presented at the 1998 NDIA IM & EM meeting held in San Diego, California.
Date: August 23, 2001
Creator: Schmidt, R. D.; Mitchell, A. R.; Lee, G. S.; Quinlin, W. T.; Cates, M. & Coburn, M. D.
Object Type: Article
System: The UNT Digital Library
Argonne National Laboratory-East site environmental report for calendar year 2000. (open access)

Argonne National Laboratory-East site environmental report for calendar year 2000.

This report discusses the results of the environmental protection program at Argonne National Laboratory-East (ANL-E) for calendar year 2000. To evaluate the effects of ANL-E operations on the environment, samples of environmental media collected on the site, at the site boundary, and off the ANL-E site were analyzed and compared with applicable guidelines and standards. A variety of radionuclides were measured in air, surface water, on-site groundwater, and bottom sediment samples. In addition, chemical constituents in surface water, groundwater, and ANL-E effluent water were analyzed. External penetrating radiation doses were measured, and the potential for radiation exposure to off-site population groups was estimated. Results are interpreted in terms of the origin of the radioactive and chemical substances (i.e., natural, fallout, ANL-E, and other) and are compared with applicable environmental quality standards. A U.S. Department of Energy dose calculation methodology, based on International Commission on Radiological Protection recommendations and the U.S. Environmental Protection Agency's CAP-88 (Clean Air Act Assessment Package-1988) computer code, was used in preparing this report. The status of ANL-E environmental protection activities with respect to the various laws and regulations that govern waste handling and disposal is discussed, along with the progress of environmental corrective actions and restoration …
Date: August 23, 2001
Creator: Golchert, N. W.; Kolzow, R. G. & Moos, L. P.
Object Type: Report
System: The UNT Digital Library
Towards the Development of a Molecular Map in Switchgrass: I. Microsatellite Marker Development (open access)

Towards the Development of a Molecular Map in Switchgrass: I. Microsatellite Marker Development

The long-term goal of the switchgrass breeding program is to improve regionally adapted varieties and increase biomass yield and feedstock quality. Although, to some extent, biomass yields are dependent on environmental constraints, increased yield can be achieved through the development of genotypes with improved seasonal adaptation, tolerance to unfavorable environmental conditions, and improved resistance to pest and disease. To date, improvement in switchgrass has relied on recurrent breeding strategies based on phenotypic or genotypic selection. Yield improvements have been modest by this method. If we expect to make significant increase in yields, we need tools that will allow us to map complex traits and uncover the genes that influence them. A genetic linkage map could be a powerful tool for accelerating switchgrass development through marker-assisted selection, breeding and recombination. This type of mapping requires the development of markers that can be associated with phenotypic traits in a population of known pedigree. The most commonly used markers for mapping include restriction fragment length polymorphisms (RFLP) and simple sequence repeats (SSR). At ORNL, we have been concentrating on the development of SSR markers, while our colleagues at the University of Georgia are developing RFLP markers in order to select parents to produce …
Date: August 23, 2001
Creator: Gunter, L. E.
Object Type: Report
System: The UNT Digital Library
Aging and Phase Stability of Waste Package Outer Barrier (open access)

Aging and Phase Stability of Waste Package Outer Barrier

This Analysis Model Report (AMR) was prepared in accordance with the Work Direction and Planning Document, ''Aging and Phase Stability of Waste Package Outer Barrier'' (CRWMS M&O 1999a). ICN 01 of this AMR was developed following guidelines provided in TWP-MGR-MD-000004 REV 01, ''Technical Work Plan for: Integrated Management of Technical Product Input Department'' (BSC 2001, Addendum B). It takes into consideration the Enhanced Design Alternative II (EDA II), which has been selected as the preferred design for the Engineered Barrier System (EBS) by the License Application Design Selection (LADS) program team (CRWMS M&O 1999b). The salient features of the EDA II design for this model are a waste package (WP) consisting of an outer barrier of Alloy 22 and an inner barrier of Type 316L stainless steel. This report provides information on the phase stability of Alloy 22l, the current waste-package-outer-barrier (WPOB) material. These phase stability studies are currently divided into three general areas: (1) Long-range order reactions; (2) Intermetallic and carbide precipitation in the base metal; and (3) Intermetallic and carbide precipitation in welded samples.
Date: August 23, 2001
Creator: Summers, Tammy S. Edgecumble
Object Type: Report
System: The UNT Digital Library
Wear and friction behavior of Zr implanted D3 steel (open access)

Wear and friction behavior of Zr implanted D3 steel

Multicharged, pure, high current and pulsed ion beams of Zr have been extracted from a metal vapor vacuum arc (MEVVA) source and implanted into AISI D3 (C: 2-2,35%, Mn: 0,60%, Si: 0,60%, Cr: 11-13,50%, Ni: 0,30%, W: 1%, V: 1%) tool steel samples at the 3,6.1016, 5.1016 and 1.1017 ions/cm2 doses. The wear resistance and friction coefficient have been estimated using pin-on-disc wear tests. Implantation of Zr decreased the wear loss and friction coefficient. RBS, AES and SEM Microprobe analyses were used as a guide for explanation of implantation's effects.
Date: August 23, 2001
Creator: Akbas, N.; Saklakoglu, I.E.; Monteiro, O.R. & Brown, I.G.
Object Type: Article
System: The UNT Digital Library
Advanced Techniques for Reservoir Simulation and Modeling of Non-Conventional Wells (open access)

Advanced Techniques for Reservoir Simulation and Modeling of Non-Conventional Wells

Research results for the second year of this project on the development of improved modeling techniques for non-conventional (e.g., horizontal, deviated or multilateral) wells were presented. The overall program entails the development of enhanced well modeling and general simulation capabilities. A general formulation for black-oil and compositional reservoir simulation was presented.
Date: August 23, 2001
Creator: Durlofsky, Louis J. & Aziz, Khalid
Object Type: Report
System: The UNT Digital Library
Estimating the Overall Impact of a Change in Agricultural Practices on Atmospheric CO{sub 2} (open access)

Estimating the Overall Impact of a Change in Agricultural Practices on Atmospheric CO{sub 2}

One option for sequestering carbon in the terrestrial biosphere is to increase the carbon (C) stocks in agricultural soils. There is now an extensive literature on the amount of C that has been lost from soils as a consequence of humans disturbing natural ecosystems, and of the amount of C that might be returned to soils with improved management practices. Improvements in management practices could include efficient use of fertilizers and irrigation water, use of crop rotations, and changing from conventional tillage (CT) to conservation tillage (or, more specifically, to no-till (NT)). The Intergovernmental Panel on Climate Change (IPCC) has estimated that 55 x 10{sup 9} Mg of soil C have been lost, globally, largely as a result of cultivating former grasslands, forests, and wetlands. The IPCC estimated further that 22-29 x 10{sup 9} Mg of C could be returned to existing, world, agricultural soils under improved management regimes. Historical losses of soil organic C (SOC) in the US, due to cultivation, have been estimated to be 1.3 {+-} 0.3 x 10{sup 9} Mg (Kern and Johnson 1993). Kern and Johnson projected that by increasing NT practice in the US from 27% in 1990 to 76%, a total of 0.4 …
Date: August 23, 2001
Creator: West, T.O.
Object Type: Article
System: The UNT Digital Library
Education Savings Accounts for Elementary and Secondary Education (open access)

Education Savings Accounts for Elementary and Secondary Education

The Economic Growth and Tax Relief Reconciliation Act of 2001 (P.L. 107-16) that President Bush signed on June 7, 2001, includes these changes, effective after 2001. The most prominent issue they raise is whether the federal government should assist families whose children are educated in private schools. Policy questions include what effect such assistance might have on public schools and student performance and whether it would be constitutional. Concerns have also been expressed that the legislation would create compliance problems and is most likely to benefit better-off families. P.L. 107-22 renamed the accounts Coverdell education savings accounts.
Date: August 23, 2001
Creator: Lyke, Bob & Stedman, James B.
Object Type: Report
System: The UNT Digital Library
Immigration of Agricultural Guest Workers: Policy, Trends, and Legislative Issues (open access)

Immigration of Agricultural Guest Workers: Policy, Trends, and Legislative Issues

This report discusses the revision of U.S. immigration policy on agricultural guest workers that are coming from various perspectives, and several major bills have already been introduced in the 107th Congress
Date: August 23, 2001
Creator: Wasem, Ruth Ellen & Collver, Geoffrey K
Object Type: Report
System: The UNT Digital Library