Resource Type

167 Matching Results

Results open in a new window/tab.

Best Practices: Setting Requirements Differently Could Reduce Weapon Systems' Total Ownership Costs (open access)

Best Practices: Setting Requirements Differently Could Reduce Weapon Systems' Total Ownership Costs

A chapter report issued by the General Accounting Office with an abstract that begins "For fiscal year 2003, the Department of Defense (DOD) asked for about $185 billion to develop, procure, operate, and maintain its weapon systems. This request represents an increase of 18 percent since 2001 for the total ownership costs of DOD weapon systems. Often, DOD systems need expensive spare parts and support systems after they are fielded to meet required readiness levels. DOD has been increasingly concerned that the high cost of maintaining systems has limited its ability to modernize and invest in new weapons. This report examines the best practices of leading commercial firms to manage a product's total ownership costs and determines if those practices can be applied to DOD."
Date: February 11, 2003
Creator: United States. General Accounting Office.
System: The UNT Digital Library
Securities Investor Protection: Update on Matters Related to the Securities Investor Protection Corporation (open access)

Securities Investor Protection: Update on Matters Related to the Securities Investor Protection Corporation

A letter report issued by the General Accounting Office with an abstract that begins "As result of ongoing concerns about the adequacy of disclosures provided to investors about the Securities Investor Protection Corporation (SIPC) and investors' responsibilities to protect their investments, GAO issued a report in 2001 entitled Securities Investor Protection: Steps Needed to Better Disclose SIPC Policies to Investors (GAO-01-653). GAO was asked to determine the status of recommendations made to the Securities and Exchange Commission (SEC) and SIPC in that report. GAO was also asked to review a number of issues involving excess SIPC insurance, private insurance securities firms purchase to cover accounts that are in excess of SIPC's statutory limits."
Date: July 11, 2003
Creator: United States. General Accounting Office.
System: The UNT Digital Library
HUD Purchase Cards: Poor Internal Controls Resulted in Improper and Questionable Purchases (open access)

HUD Purchase Cards: Poor Internal Controls Resulted in Improper and Questionable Purchases

A letter report issued by the General Accounting Office with an abstract that begins "Due to the Department of Housing and Urban Development's (HUD) increasing use of purchase cards and the inherent risk associated with their use, Congress asked GAO to audit the purchase card program concentrating on assessing internal controls and determining whether purchases being made are a valid use of government funds."
Date: April 11, 2003
Creator: United States. General Accounting Office.
System: The UNT Digital Library
Forest Service Purchase Cards: Internal Control Weaknesses Resulted in Instances of Improper, Wasteful, and Questionable Purchases (open access)

Forest Service Purchase Cards: Internal Control Weaknesses Resulted in Instances of Improper, Wasteful, and Questionable Purchases

A letter report issued by the General Accounting Office with an abstract that begins "Since 1999, GAO has designated Forest Service's financial management as a high-risk area because of internal control and accounting weaknesses that have been identified by the Inspector General and GAO. Given these known risks and the hundreds of millions of dollars in credit card purchases made by the agency each year, GAO was asked to review the Forest Service's fiscal year 2001 purchase card transactions to determine whether (1) existing internal controls were designed to provide reasonable assurance that improper purchases would be prevented or detected, (2) purchases were made in accordance with established policies and procedures, and (3) purchases were made for a reasonable cost and reflected a legitimate government need."
Date: August 11, 2003
Creator: United States. General Accounting Office.
System: The UNT Digital Library
Homeland Defense: DOD Needs to Assess the Structure of U.S. Forces for Domestic Military Missions (open access)

Homeland Defense: DOD Needs to Assess the Structure of U.S. Forces for Domestic Military Missions

A letter report issued by the General Accounting Office with an abstract that begins "The way in which the federal government views the defense of the United States has dramatically changed since September 11, 2001. Consequently, the Department of Defense (DOD) has adjusted its strategic and operational focus to encompass not only traditional military concerns posed by hostile states overseas but also the asymmetric threats directed at our homeland by both terrorists and hostile states. GAO was asked to review DOD's domestic missions, including (1) how DOD's military and nonmilitary missions differ; (2) how DOD's military and nonmilitary missions have changed since September 11, 2001; (3) how the 1878 Posse Comitatus Act affects DOD's nonmilitary missions; and (4) the extent to which DOD's organizations, plans, and forces are adequate for domestic military missions and the consequent sustainability of the current mission approach."
Date: July 11, 2003
Creator: United States. General Accounting Office.
System: The UNT Digital Library
Defense Trade: Better Information Needed to Support Decisions Affecting Proposed Weapons Transfers (open access)

Defense Trade: Better Information Needed to Support Decisions Affecting Proposed Weapons Transfers

A letter report issued by the General Accounting Office with an abstract that begins "The heightened visibility of advanced U.S. weapons in military conflicts has prompted foreign countries to seek to purchase such weaponry. In 2001, transfers of U.S. weapons and technologies to foreign governments totaled over $12 billion. The potential loss of U.S. technological advantage has been raised as an issue in recently approved transfers of advanced military weapons and technologies--such as military aircraft that were reported in the media to contain superior radar and avionics than those in the Department of Defense's (DOD) inventory. GAO looked at how releasability of advanced weapons is determined, how U.S. technological advantage is considered and protected, and what information is needed to make informed decisions on the potential release of advanced weapons."
Date: July 11, 2003
Creator: United States. General Accounting Office.
System: The UNT Digital Library
Free Trade Area of the Americas: Negotiations Progress, but Successful Ministerial Hinges on Intensified U.S. Preparations (open access)

Free Trade Area of the Americas: Negotiations Progress, but Successful Ministerial Hinges on Intensified U.S. Preparations

A letter report issued by the General Accounting Office with an abstract that begins "Establishing a 34-nation Free Trade Area of the Americas agreement has been under negotiation since 1998. This agreement would eliminate tariffs and create common trade and investment rules for these nations. Most recently, the United States, along with Brazil, assumed the leadership of the negotiations. GAO was asked to analyze (1) the challenges for the current negotiating phase, which will include a ministerial meeting in Miami, Florida, in November 2003; and (2) the U.S.'s readiness to serve as co-chair of the negotiations and host of the November 2003 ministerial."
Date: April 11, 2003
Creator: United States. General Accounting Office.
System: The UNT Digital Library
Tax Administration: IRS Should Reassess the Level of Resources for Testing Forms and Instructions (open access)

Tax Administration: IRS Should Reassess the Level of Resources for Testing Forms and Instructions

A letter report issued by the General Accounting Office with an abstract that begins "Taxpayers rated the Internal Revenue Service's (IRS) ability to provide clear and easy-to-use forms and instructions among the lowest of 27 indicators of service in 1993. Due to continuing concerns about unclear forms and instructions, GAO was asked to determine (1) whether and how often IRS tests the clarity of new and revised individual income tax forms and instructions; (2) the benefits, if any, of testing forms and instructions for clarity prior to their use; and (3) whether any factors limit IRS's ability to do more tests and if so, how they can be addressed."
Date: April 11, 2003
Creator: United States. General Accounting Office.
System: The UNT Digital Library
Human Capital: Selected Agency Actions to Integrate Human Capital Approaches to Attain Mission Results (open access)

Human Capital: Selected Agency Actions to Integrate Human Capital Approaches to Attain Mission Results

A letter report issued by the General Accounting Office with an abstract that begins "Successful strategic human capital management requires the integration of human capital approaches with strategies for accomplishing organizational missions and program goals. Such integration allows the agency to ensure that its core processes efficiently and effectively support mission-related outcomes. Based on the recommendations of various human capital experts, GAO identified six executive branch agencies that had taken key actions to integrate their human capital approaches with their strategic planning and decision making. The agencies were the Federal Emergency Management Agency, the General Services Administration, the Internal Revenue Service, the Social Security Administration, the U.S. Coast Guard, and the U.S. Geological Survey. These key actions may prove helpful to other agencies as they seek to ensure that their human capital approaches are aligned with their program goals."
Date: April 11, 2003
Creator: United States. General Accounting Office.
System: The UNT Digital Library
A STUDY OF THE DISCREPANCY BETWEEN FEDERAL AND STATE MEASUREMENTS OF ON-HIGHWAY FUEL CONSUMPTION (open access)

A STUDY OF THE DISCREPANCY BETWEEN FEDERAL AND STATE MEASUREMENTS OF ON-HIGHWAY FUEL CONSUMPTION

Annual highway fuel taxes are collected by the Treasury Department and placed in the Highway Trust Fund (HTF). There is, however, no direct connection between the taxes collected by the Treasury Department and the gallons of on-highway fuel use, which can lead to a discrepancy between these totals. This study was conducted to determine how much of a discrepancy exists between the total fuel usages estimated based on highway revenue funds as reported by the Treasury Department and the total fuel usages used in the apportionment of the HTF to the States. The analysis was conducted using data from Highway Statistics Tables MF-27 and FE-9 for the years 1991-2001. It was found that the overall discrepancy is relatively small, mostly within 5% difference. The amount of the discrepancy varies from year to year and varies among the three fuel types (gasoline, gasohol, special fuels). Several potential explanations for these discrepancies were identified, including issues on data, tax measurement, gallon measurement, HTF receipts, and timing. Data anomalies caused by outside forces, such as deferment of tax payments from one fiscal year to the next, can skew fuel tax data. Fuel tax evasion can lead to differences between actual fuel use and …
Date: August 11, 2003
Creator: Hwang, HL
System: The UNT Digital Library
Vision 21 Systems Analysis Methodologies Annual Report: 2001 (open access)

Vision 21 Systems Analysis Methodologies Annual Report: 2001

Under the sponsorship of the U.S. Department of Energy/National Energy Technology Laboratory, a multi-disciplinary team led by the Advanced Power and Energy Program of the University of California at Irvine is defining the system engineering issues associated with the integration of key components and subsystems into power plant systems that meet performance and emission goals of the Vision 21 program. The study efforts have narrowed down the myriad of fuel processing, power generation, and emission control technologies to selected scenarios that identify those combinations having the potential to achieve the Vision 21 program goals of high efficiency and minimized environmental impact while using fossil fuels. The technology levels considered are based on projected technical and manufacturing advances being made in industry and on advances identified in current and future government supported research. Included in these advanced systems are solid oxide fuel cells and advanced cycle gas turbines. The results of this investigation will serve as a guide for the U. S. Department of Energy in identifying the research areas and technologies that warrant further support.
Date: August 11, 2003
Creator: Samuelsen, G.S.; Rao, A.; Robson, F. & Washom, B.
System: The UNT Digital Library
Microstructural Evolution Based on Fundamental Interfacial Properties (open access)

Microstructural Evolution Based on Fundamental Interfacial Properties

This first CMSN project has been operating since the summer of 1999. The main achievement of the project was to bring together a community of materials scientists, physicists and mathematicians who share a common interest in the properties of interfaces and the impact of those properties on microstructural evolution. Six full workshops were held at Carnegie Mellon (CMU), Northwestern (NWU), Santa Fe, Northeastern University (NEU), National Institute for Standards and Technology (NIST), Ames Laboratory, and at the University of California in San Diego (UCSD) respectively. Substantial scientific results were obtained through the sustained contact between the members of the project. A recent issue of Interface Science (volume 10, issue 2/3, July 2002) was dedicated to the output of the project. The results include: the development of methods for extracting anisotropic boundary energy and mobility from molecular dynamics simulations of solid/liquid interfaces in nickel; the extraction of anisotropic energies and mobilities in aluminum from similar MD simulations; the application of parallel computation to the calculation of interfacial properties; the development of a method to extract interfacial properties from the fluctuations in interface position through consideration of interfacial stiffness; the use of anisotropic interface properties in studies of abnormal grain growth; the …
Date: July 11, 2003
Creator: Rollett, A. D.; Srolovitz, D. J. & Karma, A.
System: The UNT Digital Library
A Study of Experience Credit for Professional Engineering Licensure (open access)

A Study of Experience Credit for Professional Engineering Licensure

Oak Ridge National Laboratory performed a study of experience credit for professional engineering licensure for the Department of Energy's Industrial Assessment Center (IAC) Program. One of the study's goals was to determine how state licensure boards grant experience credit for engineering licensure, particularly in regards to IAC experience and experience prior to graduation. Another goal involved passing IAC information to state licensure boards to allow the boards to become familiar with the program and determine if they would grant credit to IAC graduates. The National Council of Examiners for Engineers and Surveyors (NCEES) has adopted a document, the ''Model Law''. This document empowers states to create state engineering boards and oversee engineering licensure. The board can also interpret and adopt rules and regulations. The Model Law also gives a general ''process'' for engineering licensure, the ''Model Law Engineer''. The Model Law Engineer requires that an applicant for professional licensure, or professional engineering (PE) licensure, obtain a combination of formal education and professional experience and successfully complete the fundamentals of engineering (FE) and PE exams. The Model Law states that a PE applicant must obtain four years of ''acceptable'' engineering experience after graduation to be allowed to sit for the PE …
Date: August 11, 2003
Creator: Martin, M.A.
System: The UNT Digital Library
Re-Assessing the Maximum Allowed Infrared (IR) Power for Enchanced Layering in a Conduction Dominated Cryogenic NIF-Scale Hohlraum (open access)

Re-Assessing the Maximum Allowed Infrared (IR) Power for Enchanced Layering in a Conduction Dominated Cryogenic NIF-Scale Hohlraum

Recent measurements of the infrared (IR) absorption coefficient of CH and CD capsules differ significantly from earlier estimated values from thin flat samples. The optimum wavelength for IR enhanced layering of DT and D{sub 2} ice layers inside of a NIF scale hohlraum depends on the relative ice and capsule absorption coefficients. This update of a previous memo shows the maximum ice heating with IR as a function of ice and capsule absorption instead of at discrete wavelengths. Also discussed is the leverage of other parameters, such as the IR absorption of the hohlraum wall and thermal conductivities of the support rods and exchange gas. The most likely capsule and ice absorption values limit the IR heating to between 2-7 Q{sub DT}. We find most leverage of the IR heating comes from increasing the ice to capsule absorption ratio. As before, this is the conduction only limit to IR, with convection potentially playing a large role.
Date: August 11, 2003
Creator: Kozioziemski, B J
System: The UNT Digital Library
Investigate Methods to Decrease Compilation Time-AX-Program Code Group Computer Science R& D Project (open access)

Investigate Methods to Decrease Compilation Time-AX-Program Code Group Computer Science R& D Project

Large simulation codes can take on the order of hours to compile from scratch. In Kull, which uses generic programming techniques, a significant portion of the time is spent generating and compiling template instantiations. I would like to investigate methods that would decrease the overall compilation time for large codes. These would be methods which could then be applied, hopefully, as standard practice to any large code. Success is measured by the overall decrease in wall clock time a developer spends waiting for an executable. Analyzing the make system of a slow to build project can benefit all developers on the project. Taking the time to analyze the number of processors used over the life of the build and restructuring the system to maximize the parallelization can significantly reduce build times. Distributing the build across multiple machines with the same configuration can increase the number of available processors for building and can help evenly balance the load. Becoming familiar with compiler options can have its benefits as well. The time improvements of the sum can be significant. Initial compilation time for Kull on OSF1 was {approx} 3 hours. Final time on OSF1 after completion is 16 minutes. Initial compilation time …
Date: June 11, 2003
Creator: Cottom, T
System: The UNT Digital Library
Limiting Court Jurisdiction Over Federal Constitutional Issues: “Court-Stripping” (open access)

Limiting Court Jurisdiction Over Federal Constitutional Issues: “Court-Stripping”

This report discusses various proposals that have been made to limit the jurisdiction of federal courts to hear cases regarding particular areas of constitutional law such as busing, abortion, prayer in school, and most recently, reciting the Pledge of Allegiance. Proposals of this type are often referred to as “court-stripping” legislation.
Date: December 11, 2003
Creator: Thomas, Kenneth R.
System: The UNT Digital Library
Countries of the World and International Organizations: Sources of Information (open access)

Countries of the World and International Organizations: Sources of Information

This report provides a selection of materials for locating information on foreign countries and international organizations. In the general information section, it presents sources giving an overview of politics, economics, and history.
Date: June 11, 2003
Creator: Salazar, Barbara A.
System: The UNT Digital Library
Large Diffractive Optics for GEo-Based Earth Surveillance (open access)

Large Diffractive Optics for GEo-Based Earth Surveillance

The natural vantage point for performing Earth-centric operations from space is geosynchronous orbit (GEO); a platform there moves at the same rate as the Earth's surface, so appears to continually ''hover'' over a fixed site on the Earth. Unlike spacecraft in other orbits, which rapidly fly-over targets, a GEO-based platform remains in-position all the time. In order to insure continual access to sites using low earth orbit (LEO) platforms, one needs a large enough constellation ({approx} 50) of spacecraft so that one is always overhead; in contrast, a single GEO platform provides continuous coverage over sites throughout Euro-Asia. This permanent coverage comes, unfortunately, with a stiff price-tag; geosynchronous orbit is 36,000 km high, so space platforms there must operate at ranges roughly 100 times greater than ones located in LEO. For optical-based applications, this extreme range is difficult to deal with; for surveillance the price is a 100-fold loss of resolution, for laser weapons it is a 10,000-fold loss in flux-on-target. These huge performance penalties are almost always unacceptable, preventing us from successfully using GEO-based platforms. In practice, we are forced to either settle for brief, infrequent access to targets, or, if we demand continuous coverage, to invest in large, …
Date: September 11, 2003
Creator: Hyde, R A
System: The UNT Digital Library
Retirement Savings and Household Wealth: A Summary of Recent Data (open access)

Retirement Savings and Household Wealth: A Summary of Recent Data

None
Date: December 11, 2003
Creator: unknown
System: The UNT Digital Library
Final Report for "Improved Representations of Cloud Microphysics for Model and Remote Sensing Evaluation using Data Collected during ISDAC, TWP-ICE and RACORO (open access)

Final Report for "Improved Representations of Cloud Microphysics for Model and Remote Sensing Evaluation using Data Collected during ISDAC, TWP-ICE and RACORO

We were funded by ASR to use data collected during ISDAC and TWP-ICE to evaluate models with a variety of temporal and spatial scales, to evaluate ground-based remote sensing retrievals and to develop cloud parameterizations with the end goal of improving the modeling of cloud processes and properties and their impact on atmospheric radiation. In particular, we proposed to: 1) Calculate distributions of microphysical properties observed in arctic stratus during ISDAC for initializing and evaluating LES and GCMs, and for developing parameterizations of effective particle sizes, mean fall velocities, and mean single-scattering properties for such models; 2) Improve representations of particle sizes, fall velocities and scattering properties for tropical and arctic cirrus using TWP-ICE, ISDAC and M-PACE data, and to determine the contributions that small ice crystals, with maximum dimensions D less than 50 μm, make to mass and radiative properties; 3) Study fundamental interactions between clouds and radiation by improving representations of small quasi-spherical particles and their scattering properties. We were additionally funded 1-year by ASR to use RACORO data to develop an integrated product of cloud microphysical properties. We accomplished all of our goals.
Date: June 11, 2003
Creator: McFarquhar, Greg M.
System: The UNT Digital Library
Medicare Prescription Drug Proposals: Estimates of Aged Beneficiaries Who Fall Below Income Criteria, by State (open access)

Medicare Prescription Drug Proposals: Estimates of Aged Beneficiaries Who Fall Below Income Criteria, by State

This report discusses bills related to Medicare benefits, which include additional assistance for low-income beneficiaries. The assistance would have been in the form of reduced, subsidized or eliminated premiums, deductibles and other cost-sharing. Proposals in the 108th Congress will probably also include some of these features for low-income beneficiaries.
Date: February 11, 2003
Creator: Peterson, Chris L. & Morgan, Paulette C.
System: The UNT Digital Library
Sugar Transport and Metabolism in Thermotoga (open access)

Sugar Transport and Metabolism in Thermotoga

The work conducted under this grant demonstrated that the hyperthermophilic bacterium Thermotoga neapolitana carries out glucose and lactose transport in a sodium-dependent manner and that energization of anaerobic cells is required to observe transport. We also demonstrated that Thermotoga maritima carries out maltose and glucose transport using periplasmic sugar binding proteins. We began defining patterns of expression of genes encoding sugar transport and catabolic functions in both T. maritima and T. neapolitana. We began a collaborative effort to identify all the genes regulated at the transcriptional level in response to sugars substrates. These funds also allowed us to begin an examination of the functions of several periplasmic substrate binding proteins encoded in the genome of T. maritima.
Date: February 11, 2003
Creator: Noll, Kenneth M. & Romano, Antonio H.
System: The UNT Digital Library
An Ab Initio Approach Towards Engineering Fischer-Tropsch Surface Chemistry (open access)

An Ab Initio Approach Towards Engineering Fischer-Tropsch Surface Chemistry

As the US seeks to develop an energy strategy that reduces the reliance on foreign oil, there is a renewed interest in the research and development of the Fischer Tropsch synthesis for converting syngas into long chain hydrocarbon products. This report investigates some of the basic elementary steps for Fischer-Tropsch synthesis over ideal Pt, Ru and carbon-covered Pt and Ru metal surfaces by using ab initio density functional theoretical calculations. We examine in detail the adsorption sites as well as the binding energies for C, CH, CH{sub 2}, CH3 and CH4 on Pt(111), Ru(0001), 2x2-C-Pt(111) and 2x2-C-Ru(0001). The results indicate that the binding energies increase with decreasing the hydrogen in the fragment molecule, i.e. CH{sub 4} < CH{sub 3} < CH{sub 2} < CH < C. More specifically the work analyzes the elementary steps involved in the activation of methane. This is simply the reverse set of steps necessary for the hydrogenation of C to CH{sub 4}. The results indicate that these hydrocarbon intermediates bind more strongly to Ru than Pt. The introduction of co-adsorbed carbon atoms onto both Ru(0001) as well as Pt(111) significantly increased the overall energies as well as the activation barriers for C-H bond activation. The …
Date: September 11, 2003
Creator: Neurock, Matthew & Chopra, Siddharth
System: The UNT Digital Library
Accelerator Based Neutron Beams for Neutron Capture Therapy (open access)

Accelerator Based Neutron Beams for Neutron Capture Therapy

The DOE-funded accelerator BNCT program at the Massachusetts Institute of Technology has resulted in the only operating accelerator-based epithermal neutron beam facility capable of generating significant dose rates in the world. With five separate beamlines and two different epithermal neutron beam assemblies installed, we are currently capable of treating patients with rheumatoid arthritis in less than 15 minutes (knee joints) or 4 minutes (finger joints) or irradiating patients with shallow brain tumors to a healthy tissue dose of 12.6 Gy in 3.6 hours. The accelerator, designed by Newton scientific Incorporated, is located in dedicated laboratory space that MIT renovated specifically for this project. The Laboratory for Accelerator Beam Applications consists of an accelerator room, a control room, a shielded radiation vault, and additional laboratory space nearby. In addition to the design, construction and characterization of the tandem electrostatic accelerator, this program also resulted in other significant accomplishments. Assemblies for generating epithermal neutron beams were designed, constructed and experimentally evaluated using mixed-field dosimetry techniques. Strategies for target construction and target cooling were implemented and tested. We demonstrated that the method of submerged jet impingement using water as the coolant is capable of handling power densities of up to 6 x 10(sup …
Date: April 11, 2003
Creator: Yanch, Jacquelyn C.
System: The UNT Digital Library