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Highway Infrastructure: Perceptions of Stakeholders on Approaches to Reduce Highway Project Completion Time (open access)

Highway Infrastructure: Perceptions of Stakeholders on Approaches to Reduce Highway Project Completion Time

A letter report issued by the General Accounting Office with an abstract that begins "Constructing, improving, and repairing roads is fundamental to meeting the nation's mobility needs. The Federal Highway Administration (FHWA) supplies most of the money (about $20 billion in fiscal year 2003), and state departments of transportation are primarily responsible for completing projects. Many federal and state agencies (called resource agencies) help ensure that environmental and other concerns are considered. These and other organizations have recognized that the time it takes to complete complex federally funded highway projects is too long--in some cases nearly 20 years. GAO was asked to report the views of knowledgeable officials on the most promising approaches for reducing completion time for federally funded highway projects. GAO obtained the views of 33 officials from federal, state, and private organizations with interests in federally funded roads."
Date: April 9, 2003
Creator: United States. General Accounting Office.
Object Type: Report
System: The UNT Digital Library
VA Health Care: Recruitment and Retention Challenges and Efforts to Make Salaries Competitive for Nurse Anesthetists (open access)

VA Health Care: Recruitment and Retention Challenges and Efforts to Make Salaries Competitive for Nurse Anesthetists

Testimony issued by the Government Accountability Office with an abstract that begins "Certified registered nurse anesthetists (CRNA), registered nurses who have completed a master's degree program in nurse anesthesia, provide the majority of anesthesia care in the Department of Veterans Affairs (VA) medical facilities. There are approximately 500 VA-employed CRNAs (VA CRNA) who provide care to veterans in VA medical facilities. While the demand for CRNAs has increased, many employed by VA are nearing retirement eligibility age. Concerns have been raised about the challenges VA may face in making VA CRNA salaries competitive in order to maintain its VA CRNA workforce, particularly in local markets that can be highly competitive. This testimony is based on GAO work reported in VA Health Care: Many Medical Facilities Have Challenges in Recruiting and Retaining Nurse Anesthetists, (GAO-08-56, Dec. 13, 2007). This testimony (1) identifies workforce challenges that VA medical facilities experience related to VA CRNAs, and (2) identifies a key mechanism that VA medical facilities have to help make VA CRNA salaries competitive and the extent to which VA facilities use this mechanism. For the December 2007 report, GAO analyzed surveys sent to VA chief anesthesiologists, VA human resources officers, and VA CRNAs. …
Date: April 9, 2008
Creator: United States. Government Accountability Office.
Object Type: Text
System: The UNT Digital Library
High-Level Leadership Needed to Help Guam Address Challenges Caused by DOD-Related Growth (open access)

High-Level Leadership Needed to Help Guam Address Challenges Caused by DOD-Related Growth

Correspondence issued by the Government Accountability Office with an abstract that begins "In an effort to improve the U.S. military's flexibility to address conventional and terrorist threats worldwide, the Department of Defense (DOD) plans to relocate more than 8,000 Marines and an estimated 9,000 dependents from Okinawa, Japan, to Guam as well as expand other U.S. force capabilities on the island at an estimated cost of more than $13 billion. Guam is an integral part of DOD's logistical support system and serves as an important forward operational hub for a mix of military mission requirements. According to DOD, Guam provides strategic flexibility, freedom of action, and prompt global action for the Global War on Terrorism, peace and wartime engagement, and crisis response. DOD plans to begin construction on Guam during fiscal year 2010 in order to meet the desired buildup deadline of fiscal year 2014 indicated in the agreement reached by the U.S.-Japan Security Consultative Committee on October 29, 2005. As a result of the military buildup, Guam's current population of 171,000 will increase by an estimated 25,000 active duty military personnel and dependents (or 14.6 percent), to 196,000. In addition, the realignment will require additional workers to move to …
Date: April 9, 2009
Creator: United States. Government Accountability Office.
Object Type: Text
System: The UNT Digital Library
Military Operations: DOD Needs to Provide Central Direction for Supporting Coalition Liaison Officers (open access)

Military Operations: DOD Needs to Provide Central Direction for Supporting Coalition Liaison Officers

A letter report issued by the General Accounting Office with an abstract that begins "In the National Defense Authorization Act for Fiscal Year 2003, Congress authorized the Secretary of Defense to provide administrative services and support to foreign coalition liaison officers temporarily assigned to the headquarters of a combatant command or any of its subordinate commands. Congress required GAO to assess the implementation of this legislation. Specifically, GAO's objectives were to determine (1) what guidance the Department of Defense (DOD) has provided on the implementation of this legislation, (2) the extent to which the commands are aware of and are using this legislation, and (3) the level of support being provided by commands using this legislation and the benefits derived from it."
Date: April 9, 2004
Creator: United States. General Accounting Office.
Object Type: Report
System: The UNT Digital Library
Department of Housing and Urban Development: Status of Efforts to Implement an Integrated Financial Management System (open access)

Department of Housing and Urban Development: Status of Efforts to Implement an Integrated Financial Management System

Correspondence issued by the General Accounting Office with an abstract that begins "Weaknesses in the Department of Housing and Urban Development's (HUD) financial management systems have been a long-standing challenge for the department and have contributed to our designating two of its major programs areas as high-risk and the financial management information systems in particular as a major management challenge. While some progress has been made, both GAO and the HUD Office of the Inspector General (IG) have reported extensively on weaknesses related to HUD's financial management systems. In audits of HUD's consolidated financial statements, the IG has consistently identified several material internal control weaknesses resulting from inadequate financial management systems. In recent audit reports, the HUD OIG also noted that the completion of the development of adequate financial management systems is the most critical need faced by HUD in improving its financial management control environment. Responsive financial management systems are particularly critical to HUD's ability to meet its mission, deliver key services, and establish sufficient management control over its operations. In light of these issues, Congress asked that we (1) summarize HUD's past efforts to implement an integrated financial management system, (2) identify the challenges HUD faces with its …
Date: April 9, 2003
Creator: United States. General Accounting Office.
Object Type: Text
System: The UNT Digital Library
United Nations: Renovation Schedule Accelerated after Delays, but Risks Remain in Key Areas (open access)

United Nations: Renovation Schedule Accelerated after Delays, but Risks Remain in Key Areas

Correspondence issued by the Government Accountability Office with an abstract that begins "The United Nations (UN) headquarters in New York City neither conforms to current building codes nor meets UN technology or security requirements. As the UN's host country and largest contributor, the United States has a substantial interest in the success of the Capital Master Plan (CMP), a project to renovate the complex. In this update, GAO reviewed the following key areas: renovation approach, schedule, cost, funding, risk management, project progress, procurement, and oversight. To perform this work, GAO reviewed UN documents and met with officials from the CMP office and other UN departments. To assess oversight and monitoring, GAO reviewed UN documents and oversight reports and interviewed UN officials from the Office of Internal Oversight Services (OIOS) and officials from the U.S. Department of State (State)."
Date: April 9, 2008
Creator: United States. Government Accountability Office.
Object Type: Text
System: The UNT Digital Library
Protecting The Public's Interest: Considerations for Addressing Selected Regulatory Oversight, Auditing, Corporate Governance, and Financial Reporting Issues (open access)

Protecting The Public's Interest: Considerations for Addressing Selected Regulatory Oversight, Auditing, Corporate Governance, and Financial Reporting Issues

Testimony issued by the General Accounting Office with an abstract that begins "In the wake of the Enron collapse and the proliferation of earnings restatements and pro forma earnings assertions by other companies, questions are being raised about the soundness of private sector financial reporting, auditor independence, and corporate governance. In addressing these issues, the government's role could range from direct intervention to encouraging non-governmental and private-sector entities to adopt practices that would strengthen public confidence. GAO believes that Congress should consider a holistic approach that takes into account the many players and interrelated issues that brought about the Enron situation."
Date: April 9, 2002
Creator: United States. General Accounting Office.
Object Type: Text
System: The UNT Digital Library
Fiscal Year 2004 Budget Request: U.S. General Accounting Office (open access)

Fiscal Year 2004 Budget Request: U.S. General Accounting Office

Testimony issued by the General Accounting Office with an abstract that begins "GAO is a key source of objective information and analyses and, as such, plays a crucial role in supporting congressional decision-making and helping improve government for the benefit of the American people. This testimony focuses on GAO's (1) fiscal year 2002 performance and results, (2) efforts to maximize our effectiveness, responsiveness and value, and (3) our budget request for fiscal year 2004 to support the Congress and serve the American public."
Date: April 9, 2003
Creator: United States. General Accounting Office.
Object Type: Text
System: The UNT Digital Library
Census 2010: Census at Critical Juncture for Implementing Risk Reduction Strategies (open access)

Census 2010: Census at Critical Juncture for Implementing Risk Reduction Strategies

Testimony issued by the Government Accountability Office with an abstract that begins "In 2007, the U.S. Census Bureau (Bureau) estimated the 2010 Census would cost $11.5 billion, including $3 billion on automation and technology. At a March hearing, the Department of Commerce (Commerce) stated that the Field Data Collection Automation (FDCA) program was likely to incur significant cost overruns and announced a redesign effort. At that time, GAO designated the 2010 Decennial Census as high risk, citing long-standing concerns in managing information technology (IT) investments and uncertain costs and operations. This testimony is based on past work and work nearing completion, including GAO's observation of the address canvassing dress rehearsal. For IT acquisitions, GAO analyzed system documentation, including deliverables, cost estimates, other acquisitions-related documents, and interviewed Bureau officials and contractors. This testimony describes the implications of redesign for (1) dress rehearsal and decennial operations, (2) IT acquisitions management, and (3) Decennial Census costs."
Date: April 9, 2008
Creator: United States. Government Accountability Office.
Object Type: Text
System: The UNT Digital Library
Private Pensions: Improving Worker Coverage and Benefits (open access)

Private Pensions: Improving Worker Coverage and Benefits

A letter report issued by the General Accounting Office with an abstract that begins "Although pensions are an important source of income for many retirees, millions of workers lack individual pension coverage. Only half of the nation's workers have been covered by private employer-sponsored pensions since the 1970s. Traditional reforms to the voluntary, single-employer-based pension system have limited potential to expand pension coverage and improve worker benefits. These pension reforms have concentrated mainly on improving tax incentives and reducing the regulatory burden on small employers. Furthermore, efforts to increase retirement savings by restricting the use of lump-sum distributions could limit worker participation in and contributions to pension plans. Three categories of reform--pooled employer reforms, universal access reforms, and universal participation reforms--go beyond the voluntary, single-employer private pension system. Pooled employer reforms seek to increase the number of firms offering pension coverage by creating centralized third-party administration and increasing pension plan portability. Universal access reforms seek to boost savings by offering payroll-based accounts, albeit without mandating employer contributions. Universal participation reforms would mandate pension availability and participation for all workers, similar to the existing Social Security system."
Date: April 9, 2002
Creator: United States. General Accounting Office.
Object Type: Report
System: The UNT Digital Library
Employee Security: Implementation of Identification Cards and DOD's Personnel Security Clearance Program Need Improvement (open access)

Employee Security: Implementation of Identification Cards and DOD's Personnel Security Clearance Program Need Improvement

Testimony issued by the Government Accountability Office with an abstract that begins "In an effort to increase the quality and security of federal identification (ID) practices, the President issued Homeland Security Presidential Directive 12 (HSPD-12) in August 2004. This directive requires the establishment of a governmentwide standard for secure and reliable forms of ID. GAO was asked to testify on its report, being released today, assessing the progress selected agencies have made in implementing HSPD-12. For this report, GAO selected eight agencies with a range of experience in implementing ID systems and analyzed actions these agencies had taken. GAO was also asked to summarize challenges in the DOD personnel security clearance process. This overview is based on past work including reviews of clearance-related documents. Military servicemembers, federal workers, and industry personnel must obtain security clearances to gain access to classified information. Long-standing delays in processing applications for these clearances led GAO to designate the Department of Defense's (DOD) program as a high-risk area in 2005. In its report on HSPD-12, GAO made recommendations to the Office of Management and Budget (OMB), to, among other things, set realistic milestones for implementing the electronic authentication capabilities. GAO has also made recommendations to …
Date: April 9, 2008
Creator: United States. Government Accountability Office.
Object Type: Text
System: The UNT Digital Library
Internal Revenue Service: Assessment of Budget Request for Fiscal Year 2003 and Interim Results of 2002 Tax Filing Season (open access)

Internal Revenue Service: Assessment of Budget Request for Fiscal Year 2003 and Interim Results of 2002 Tax Filing Season

Testimony issued by the General Accounting Office with an abstract that begins "This testimony discusses the Internal Revenue Service (IRS) fiscal year 2003 budget request for the 2002 tax filing season. GAO found that IRS's plans for hiring and redirecting staff may be optimistic because budgets are prepared so far in advance of the fiscal year involved. IRS assumed (1) labor and nonlabor savings of 2,287 staff years and $157.5 million and (2) additional savings of $38.5 million from better business practices. IRS's justification does not always adequately link the resources being requested and the agency's performance goals. Although IRS provided adequate support to justify the $450 million request for its multiyear capital account for business systems modernization, it did not adequately support $1.63 billion of the $1.68 billion requested for its information systems. In the area of agency performance, GAO found that IRS has generally processed returns smoothly and seen continued growth in electronic filing. The one exception to smooth processing has been the large number of errors related to the rate reduction credit. IRS has had to correct millions of returns due to the credit, and taxpayers' call about the credit have greatly increased the demand on IRS's …
Date: April 9, 2002
Creator: United States. General Accounting Office.
Object Type: Text
System: The UNT Digital Library
Medicare: Observations on Program Sustainability and Strategies to Control Spending on Any Proposed Drug Benefit (open access)

Medicare: Observations on Program Sustainability and Strategies to Control Spending on Any Proposed Drug Benefit

Testimony issued by the General Accounting Office with an abstract that begins "The House Committee on Ways and Means is holding a hearing on modernizing Medicare and integrating prescription drugs into the program. There are growing concerns about gaps in the Medicare program, most notably the lack of outpatient prescription drug coverage, which may leave Medicare's most vulnerable beneficiaries with high out-of-pocket costs. At the same time, Medicare already faces a huge projected financial imbalance that has worsened significantly in the past year. This statement discusses the challenges of adding a drug benefit to Medicare in the context of the program's current and projected financial condition. It also examines program design issues to be considered with respect to administering any proposed drug benefit. Specifically, it discusses how private sector health plans have used entities called pharmacy benefit managers (PBM) to control drug benefit expenditures."
Date: April 9, 2003
Creator: United States. General Accounting Office.
Object Type: Text
System: The UNT Digital Library
Infectious Disease Outbreaks: Bioterrorism Preparedness Efforts Have Improved Public Health Response Capacity, but Gaps Remain (open access)

Infectious Disease Outbreaks: Bioterrorism Preparedness Efforts Have Improved Public Health Response Capacity, but Gaps Remain

Testimony issued by the General Accounting Office with an abstract that begins "Following the bioterrorist events of the fall of 2001, there has been concern that the nation may not be prepared to respond to a major public health threat, such as the current outbreak of Severe Acute Respiratory Syndrome (SARS). Whether a disease outbreak occurs naturally or is due to the intentional release of a harmful biological agent by a terrorist, much of the initial response would occur at the local level, particularly hospitals and their emergency departments. Efforts to plan for worldwide influenza pandemics are useful for understanding public health preparedness for other large-scale outbreaks. GAO was asked to examine (1) the preparedness of state and local public health agencies and organizations for responding to a large-scale infectious disease outbreak, (2) the preparedness of hospitals for responding to a large-scale infectious disease outbreak, and (3) federal and state efforts to prepare for an influenza pandemic. This testimony is based on GAO's report, Bioterrorism: Preparedness Varied across State and Local Jurisdictions, GAO-03-373 (Apr. 7, 2003), a survey of hospitals GAO conducted to assess their level of emergency preparedness, and information updating GAO's prior report on federal and state planning …
Date: April 9, 2003
Creator: United States. General Accounting Office.
Object Type: Text
System: The UNT Digital Library
U.S. Government Financial Statements: FY 2001 Results Highlight the Continuing Need to Accelerate Federal Financial Management Reform (open access)

U.S. Government Financial Statements: FY 2001 Results Highlight the Continuing Need to Accelerate Federal Financial Management Reform

Testimony issued by the General Accounting Office with an abstract that begins "As in the past four years, GAO was unable to express an opinion on the federal government's consolidated financial statements for fiscal years 2000 and 2001 because of material weaknesses in internal control and accounting and reporting issues. These conditions prevented GAO from providing Congress and American citizens with an opinion as to whether the consolidated financial statements are fairly stated in conformity with U.S. generally accepted accounting principles. Until these problems are adequately addressed, the government will continue to have difficulty (1) reporting its assets, liabilities, and costs; (2) adequately measuring the full cost and financial performance of programs and effectively manage related operations; and (3) adequately safeguarding significant assets and and properly recording transactions."
Date: April 9, 2002
Creator: United States. General Accounting Office.
Object Type: Text
System: The UNT Digital Library
Department of Homeland Security: Progress Made in Implementation of Management Functions, but More Work Remains (open access)

Department of Homeland Security: Progress Made in Implementation of Management Functions, but More Work Remains

Testimony issued by the Government Accountability Office with an abstract that begins "The Department of Homeland Security (DHS) began operations in March 2003 with missions that include preventing terrorist attacks from occurring within the United States, reducing U.S. vulnerability to terrorism, minimizing damages from attacks that occur, and helping the nation recover from any attacks. GAO has reported that the implementation and transformation of DHS is an enormous management challenge. GAO's prior work on mergers and acquisitions found that successful transformations of large organizations, even those faced with less strenuous reorganizations than DHS, can take at least 5 to 7 years to achieve. This testimony addresses (1) the progress made by DHS in implementing its management functions; and (2) key issues that have affected the department's implementation efforts. This testimony is based on GAO's August 2007 report evaluating DHS's progress between March 2003 and July 2007; selected reports issued since July 2007; and GAO's institutional knowledge of homeland security and management issues."
Date: April 9, 2008
Creator: United States. Government Accountability Office.
Object Type: Text
System: The UNT Digital Library
IRS Management: IRS Practices Contribute to Its Resilience, but It Would Benefit from Additional Emergency Planning Efforts (open access)

IRS Management: IRS Practices Contribute to Its Resilience, but It Would Benefit from Additional Emergency Planning Efforts

A letter report issued by the Government Accountability Office with an abstract that begins "The Internal Revenue Service (IRS) collects the revenues that fund the federal government and issues billions of dollars in refunds. Consequently, IRS's ability to demonstrate agility and speed in restoring its functions after a disruption is vital to the government and the economy. GAO (1) identified the definition and attributes of organizational resilience; (2) examined the extent to which these attributes are exhibited within IRS; and (3) reviewed the challenges and opportunities faced by the IRS in becoming more resilient. GAO gathered and analyzed the attributes of resilience based on discussions with academic and practitioner experts in the field. GAO then reviewed IRS human capital and emergency preparedness policies and strategic plans, observed campus operations and emergency working group meetings, and interviewed officials from headquarters and each of the four business units."
Date: April 9, 2009
Creator: United States. Government Accountability Office.
Object Type: Report
System: The UNT Digital Library
ENCAPSULATION OF PALLADIUM IN POROUS WALL HOLLOW GLASS MICROSPHERES (open access)

ENCAPSULATION OF PALLADIUM IN POROUS WALL HOLLOW GLASS MICROSPHERES

A new encapsulation method was investigated in an attempt to develop an improved palladium packing material for hydrogen isotope separation. Porous wall hollow glass microspheres (PWHGMs) were produced by using a flame former, heat treating and acid leaching. The PWHGMs were then filled with palladium salt using a soak-and-dry process. The palladium salt was reduced at high temperature to leave palladium inside the microspheres.
Date: April 9, 2008
Creator: Heung, L.; George Wicks, G. & Ray Schumacher, R.
Object Type: Article
System: The UNT Digital Library
ELECTROCHEMICAL CORROSION TEST RESULTS FOR TANK 241-SY-102 SUPERNATE GRAB SAMPLES (open access)

ELECTROCHEMICAL CORROSION TEST RESULTS FOR TANK 241-SY-102 SUPERNATE GRAB SAMPLES

This report describes the electrochemical corrosion scans and conditions for testing of SY-102 supernatant samples taken December 2004. The testing was performed because the tank was under a Justification for Continued Operation allowing the supernatant composition to be outside the chemistry limits of Administrative Control 5.16, 'Corrosion Mitigation program'. A new electrochemical working electrode of A516 Grade 60 carbon steel was used for each scan; all scans were measured against a saturated calomel electrode, with carbon counter electrodes, and all scans were carried out at 50 C. The samples were scanned twice, once as received and once sparged with argon to deoxygenate the sample. For those scans conducted after argon purging, the corrosion rates ranged from 0.012 to 0.019 mpy. A test for stress corrosion cracking was carried out on one sample (2SY-04-07) with negative results.
Date: April 9, 2007
Creator: JB, DUNCAN
Object Type: Report
System: The UNT Digital Library
Ion Exclusion by Sub 2-nm Carbon Nanotube Pores (open access)

Ion Exclusion by Sub 2-nm Carbon Nanotube Pores

Carbon nanotubes offer an outstanding platform for studying molecular transport at nanoscale, and have become promising materials for nanofluidics and membrane technology due to their unique combination of physical, chemical, mechanical, and electronic properties. In particular, both simulations and experiments have proved that fluid flow through carbon nanotubes of nanometer size diameter is exceptionally fast compared to what continuum hydrodynamic theories would predict when applied on this length scale, and also, compared to conventional membranes with pores of similar size, such as zeolites. For a variety of applications such as separation technology, molecular sensing, drug delivery, and biomimetics, selectivity is required together with fast flow. In particular, for water desalination, coupling the enhancement of the water flux with selective ion transport could drastically reduce the cost of brackish and seawater desalting. In this work, we study the ion selectivity of membranes made of aligned double-walled carbon nanotubes with sub-2 nm diameter. Negatively charged groups are introduced at the opening of the carbon nanotubes by oxygen plasma treatment. Reverse osmosis experiments coupled with capillary electrophoresis analysis of permeate and feed show significant anion and cation rejection. Ion exclusion declines by increasing ionic strength (concentration) of the feed and by lowering solution …
Date: April 9, 2008
Creator: Fornasiero, F; Park, H G; Holt, J K; Stadermann, M; Grigoropoulos, C P; Noy, A et al.
Object Type: Article
System: The UNT Digital Library
IMPLEMENTING CHANGES TO AN APPROVED AND IN-USE DOCUMENTED SAFETY ANALYSIS (open access)

IMPLEMENTING CHANGES TO AN APPROVED AND IN-USE DOCUMENTED SAFETY ANALYSIS

None
Date: April 9, 2008
Creator: JP, KING
Object Type: Article
System: The UNT Digital Library
Secretory pathway Ca2+/Mn2+-ATPase isoform 2 and lactation: specific localization of plasmalemmal and secretory pathway Ca2+ pump isoforms in the mammary gland (open access)

Secretory pathway Ca2+/Mn2+-ATPase isoform 2 and lactation: specific localization of plasmalemmal and secretory pathway Ca2+ pump isoforms in the mammary gland

The supply of calcium to the developing neonate via milk is an important physiological process. Until recently the mechanism for the enrichment of milk with calcium was thought to be almost entirely mediated via the secretory pathway. However, recent studies suggest that a specific isoform of the plasma membrane calcium ATPase, PMCA2, is the primary mechanism for calcium transport into milk, highlighting a major role for apical calcium transport. We compared the expression of the recently identified secretory calcium ATPase, SPCA2, and SPCA1, in the mouse mammary gland during different stages of development. SPCA2 levels increased over 35 fold during lactation, while SPCA1 increased only a modest two fold. The potential importance of SPCA2 in lactation was also highlighted by its localization to luminal secretory cells of the mammary gland during lactation, while SPCA1 was expressed throughout the cells of the mammary gland. We also observed major differences in the localization of PMCA2 and PMCA1 during lactation. Using the SCp2 mouse mammary epithelial cell 3D culture model, differences in the sub-cellular distribution of PMCA2 and PMCA1 were clear. These studies highlight the likely specific roles of PMCA2 and SPCA2 in lactation, and link the recently characterized SPCA2 calcium pump to …
Date: April 9, 2008
Creator: Faddy, Helen M.; Smart, Chanel E.; Xu, Ren; Lee, Genee Y.; Kenny, Paraic A.; Feng, Mingye et al.
Object Type: Article
System: The UNT Digital Library
Constructing a large-scale 3D Geologic Model for Analysis of the Non-Proliferation Experiment (open access)

Constructing a large-scale 3D Geologic Model for Analysis of the Non-Proliferation Experiment

We have constructed a regional 3D geologic model of the southern Great Basin, in support of a seismic wave propagation investigation of the 1993 Nonproliferation Experiment (NPE) at the Nevada Test Site (NTS). The model is centered on the NPE and spans longitude -119.5{sup o} to -112.6{sup o} and latitude 34.5{sup o} to 39.8{sup o}; the depth ranges from the topographic surface to 150 km below sea level. The model includes the southern half of Nevada, as well as parts of eastern California, western Utah, and a portion of northwestern Arizona. The upper crust is constrained by both geologic and geophysical studies, while the lower crust and upper mantle are constrained by geophysical studies. The mapped upper crustal geologic units are Quaternary basin fill, Tertiary deposits, pre-Tertiary deposits, intrusive rocks of all ages, and calderas. The lower crust and upper mantle are parameterized with 5 layers, including the Moho. Detailed geologic data, including surface maps, borehole data, and geophysical surveys, were used to define the geology at the NTS. Digital geologic outcrop data were available for both Nevada and Arizona, whereas geologic maps for California and Utah were scanned and hand-digitized. Published gravity data (2km spacing) were used to determine …
Date: April 9, 2008
Creator: Wagoner, J & Myers, S
Object Type: Report
System: The UNT Digital Library
Highly Insulating Glazing Systems using Non-Structural Center Glazing Layers (open access)

Highly Insulating Glazing Systems using Non-Structural Center Glazing Layers

Three layer insulating glass units with two low-e coatings and an effective gas fill are known to be highly insulating, with center-of-glass U-factors as low as 0.57 W/m{sup 2}-K (0.10 Btu/h-ft{sup 2}- F). Such units have historically been built with center layers of glass or plastic which extend all the way through the spacer system. This paper shows that triple glazing systems with non-structural center layers which do not create a hermetic seal at the edge have the potential to be as thermally efficient as standard designs, while potentially removing some of the production and product integration issues that have discouraged the use of triples.
Date: April 9, 2008
Creator: Kohler, Christian; Arasteh, Dariush; Goudey, Howdy & Kohler, Christian
Object Type: Article
System: The UNT Digital Library