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Repair Welding of Fusion Reactor Components (open access)

Repair Welding of Fusion Reactor Components

Recent experimental investigations indicate that the repair welding of irradiated materials containing greater than 1 to 2.5 appm helium leads to catastrophic cracking in the heat affected zone of the weld. The high temperatures and cooling tensile stresses which occur during the welding process lead to enhanced helium bubble growth in the heat affected zone region, resulting in catastrophic cracking upon cooling. An investigation is proposed which seeks to determine the effect of stress state on the helium bubble growth process and develop engineering modifications to the welding process based upon this understanding in an attempt to alleviate or eliminate the weld cracking problem in type 316 stainless steel materials.
Date: May 20, 1992
Creator: Chin, Bryan A.
System: The UNT Digital Library
The military-industrial complex. A current reading list. 1969 (open access)

The military-industrial complex. A current reading list. 1969

This report consists of list of the military-industrial complex.
Date: May 20, 1969
Creator: Browne, Marjorie Ann
System: The UNT Digital Library
Fusion product deposition and energy balance (open access)

Fusion product deposition and energy balance

Extensive Monte-Carlo calculations were performed of alpha-particle deposition in the Hill's Vortex configuration, as reported in D.E. Driemeyer's Ph.D. Thesis (University of Illinois, 1980). This has generally been done including a cold plasma density, n/sub c/, on the open field lines, with n/sub C//T/sub C//sup 3/2/ approx. = n/sub H//T/sub H//sup 3/2/ - i.e. with the slowing down ratio tau/sub H//tau/sub C/ lying between .1 and 10. Since many of the alpha particles spend a significant amount of their time on the open field lines, values of tau/sub H//tau/sub C/ greater than unity lead to significant removal of alpha-particle ash from the closed-field region. Surprisingly, one is able to perform this ash removal and still retain enough energy to raise the reactor Q significantly (or even ignite it).
Date: May 20, 1980
Creator: Condit, W.C. & Driemeyer, D.E.
System: The UNT Digital Library
Survey of Magnetic Fields Near BPA 230-kV and 500-kV Transmission Lines. (open access)

Survey of Magnetic Fields Near BPA 230-kV and 500-kV Transmission Lines.

The purpose of this study was to characterize typical levels and variability of 60Hz magnetic fields at the centerline and edge of right-of-way of Bonneville Power Administration (BPA) 230-kV and 500-kV transmission lines. This was accomplished by taking magnetic field measurements at over 800 spans in Oregon and Washington. The spans were sampled using a stratified random sampling procedure with region (East vs. West), voltage (230-kV vs 500-kV), and circuit configuration as strata. There were five different circuit configuration groups for each region/voltage category requiring a total of 200 strata. Magnetic field measurements were taken at 13 locations under each span using an EMDEX-C as a survey meter. Additional information recorded for each span included conductor height (at 10 locations), right-of-way width, longitudinal and lateral slope, time of day, vegetation, terrain, weather conditions, temperature, wind speed, span length and presence of other lines in the corridor. 9 refs., 17 figs., 26 tabs.
Date: May 20, 1991
Creator: Perrin, Nancy; Aggarwal, Rajinder Pal & Bracken, T. Daniel
System: The UNT Digital Library
Climate Change: Improvements Needed to Clarify National Priorities and Better Align Them with Federal Funding Decisions (open access)

Climate Change: Improvements Needed to Clarify National Priorities and Better Align Them with Federal Funding Decisions

A letter report issued by the Government Accountability Office with an abstract that begins "Climate change poses risks to many environmental and economic systems, including agriculture, infrastructure, and ecosystems. Federal law has periodically required the Office of Management and Budget (OMB) to report on federal climate change funding. GAO was asked to examine (1) federal funding for climate change activities and how these activities are organized; (2) the extent to which methods for defining and reporting climate change funding are interpreted consistently across the federal government; (3) federal climate change strategic priorities, and the extent to which funding is aligned with these priorities; and (4) what options, if any, are available to better align federal climate change funding with strategic priorities. GAO analyzed OMB funding reports and responses to a Web-based questionnaire sent to federal officials, reviewed available literature, and interviewed stakeholders."
Date: May 20, 2011
Creator: United States. Government Accountability Office.
System: The UNT Digital Library
Sovereign Wealth Funds: Laws Limiting Foreign Investment Affect Certain U.S. Assets and Agencies Have Various Enforcement Processes (open access)

Sovereign Wealth Funds: Laws Limiting Foreign Investment Affect Certain U.S. Assets and Agencies Have Various Enforcement Processes

A letter report issued by the Government Accountability Office with an abstract that begins "Foreign investors in U.S. companies or assets include individuals, companies, and government entities. One type of foreign investor that has been increasingly active in world markets is sovereign wealth funds (SWF), government-controlled funds that seek to invest in other countries. As the activities of these funds have grown they have been praised as providing valuable capital to world markets, but questions have been raised about their lack of transparency and the potential impact of their investments on recipient countries. GAO's second report on SWFs reviews (1) U.S. laws that specifically affect foreign investment, including that by SWFs, in the United States and (2) processes agencies use to enforce them. GAO reviewed policy statements, treaties, and U.S. laws, and interviewed and obtained information from agencies responsible for enforcing these laws. GAO also interviewed legal experts and organizations that track state foreign investment issues."
Date: May 20, 2009
Creator: United States. Government Accountability Office.
System: The UNT Digital Library
Homelessness: Information on Administrative Costs for HUD's Emergency Shelter Grants Program (open access)

Homelessness: Information on Administrative Costs for HUD's Emergency Shelter Grants Program

A letter report issued by the Government Accountability Office with an abstract that begins "The Homeless Emergency Assistance and Rapid Transition to Housing Act of 2009 (HEARTH Act) directed GAO to study the appropriate administrative costs of the U.S. Department of Housing and Urban Development (HUD) Emergency Shelter Grants Program (ESG)--a widely used, formula-based program that supports services to persons experiencing homelessness. This report discusses (1) for selected recipients, the types of administrative activities performed and administrative costs incurred under the ESG program, and the extent to which grant proceeds cover these administrative costs; (2) how the ESG program's allowance for administrative costs compares with administrative cost allowances for selected other targeted federal homeless grant programs, plus selected other HUD formula-based grant programs; and (3) how the nature or amount of administrative costs might be different under changes Congress made to the ESG program in the HEARTH Act that expand the types of activities that may be funded. To address these issues, GAO reviewed relevant policies and documents, interviewed officials of HUD and other agencies, made site visits in four states, reviewed HUD and other available standards on eligible administrative costs for federal grants, and reviewed cost allowances for homeless …
Date: May 20, 2010
Creator: United States. Government Accountability Office.
System: The UNT Digital Library
Military and Veterans' Benefits: Enhanced Services Could Improve Transition Assistance for Reserves and National Guard (open access)

Military and Veterans' Benefits: Enhanced Services Could Improve Transition Assistance for Reserves and National Guard

A letter report issued by the Government Accountability Office with an abstract that begins "The National Defense Authorization Act for Fiscal Year 2005 mandated that GAO review whether the transition assistance program (TAP) is meeting the needs of service members leaving the military. GAO (1) assessed TAP administration, including program participation, and (2) identified actions agencies are taking to improve TAP and challenges that remain. TAP serves military personnel with at least 180 days of active duty who separate or retire and members of the Reserves and National Guard who are released from active duty, a process termed demobilization. Recently, the Reserves and National Guard have been called to active duty in greater numbers than at any other time since the Korean War."
Date: May 20, 2005
Creator: United States. Government Accountability Office.
System: The UNT Digital Library
Paperwork Reduction Act: New Approach May Be Needed to Reduce Government Burden on Public (open access)

Paperwork Reduction Act: New Approach May Be Needed to Reduce Government Burden on Public

A letter report issued by the Government Accountability Office with an abstract that begins "Americans spend billions of hours each year providing information to federal agencies by filling out information collections (forms, surveys, or questionnaires). A major aim of the Paperwork Reduction Act (PRA) is to balance the burden of these collections with their public benefit. Under the act, agencies' Chief Information Officers (CIO) are responsible for reviewing information collections before they are submitted to the Office of Management and Budget (OMB) for approval. As part of this review, CIOs must certify that the collections meet 10 standards set forth in the act. GAO was asked to assess, among other things, this review and certification process, including agencies' efforts to consult with the public. To do this, GAO reviewed a governmentwide sample of collections, reviewed processes and collections at four agencies that account for a large proportion of burden, and performed case studies of 12 approved collections."
Date: May 20, 2005
Creator: United States. Government Accountability Office.
System: The UNT Digital Library
Patents: Information about the Publication Provisions of the American Inventors Protection Act (open access)

Patents: Information about the Publication Provisions of the American Inventors Protection Act

A letter report issued by the General Accounting Office with an abstract that begins "The U.S. Patent and Trademark Office (USPTO) receives over 300,000 patent applications each year. Before the American Inventors Protection Act of 1999, USPTO was required by law to keep the information on patent applications confidential until a patent was granted. The act modified this requirement and mandated that USPTO publish most patent applications 18 months after filing. One exception to this requirement is available to patent applicants filing only in the United States. These applicants can request that their application not be published. The act required GAO to provide information on how patent applications have been affected by the 18-month publication provisions. GAO was required to determine (1) the number of patent applications filed only in the United States, and (2) whether certain differences exist between published and unpublished patent applications. Specifically, GAO examined differences relating to whether the applicant was a large or small entity, the percentage of patents issued by USPTO and applications abandoned by the applicants, and the length of time between filing an application and when USPTO issued a patent or the application was abandoned."
Date: May 20, 2004
Creator: United States. General Accounting Office.
System: The UNT Digital Library
General Aviation: Security Assessments at Selected Airports (open access)

General Aviation: Security Assessments at Selected Airports

A letter report issued by the Government Accountability Office with an abstract that begins "General aviation accounts for three-quarters of U.S. air traffic, from small propeller planes to large jets, operating among nearly 19,000 airports. While most security operations are left to private airport operators, the Transportation Security Administration (TSA), part of the Department of Homeland Security (DHS), provides guidance on threats and vulnerabilities. In 2004, TSA issued suggested security enhancements that airports could implement voluntarily. Unlike commercial airports, in most cases general aviation airports are not required to implement specific security measures. GAO was asked to perform onsite assessments at selected airports with general aviation operations to determine what physical security measures they have to prevent unauthorized access. With advance notice, GAO investigators overtly visited a nonrepresentative selection of 13 airports, based on TSA-determined risk factors. Three of the airports also serve commercial aviation and are therefore subject to TSA security regulations. Using TSA's voluntary recommendations and GAO investigators' security expertise, GAO determined whether certain security measures were in place. GAO also requested documentation of incidents of unauthorized access. Results of GAO's assessments cannot be projected to all general aviation airports and are not meant to imply that the …
Date: May 20, 2011
Creator: United States. Government Accountability Office.
System: The UNT Digital Library
Federal Disability Programs: More Strategic Coordination Could Help Overcome Challenges to Needed Transformation (open access)

Federal Disability Programs: More Strategic Coordination Could Help Overcome Challenges to Needed Transformation

A letter report issued by the Government Accountability Office with an abstract that begins "In 2003, GAO designated federal disability programs as a high-risk area because federal disability programs remained grounded in outmoded concepts that have not been updated to reflect the current state of science, medicine, technology, and labor market conditions. In addition, the Social Security Administration (SSA) and the Department of Veterans Affairs (VA) faced management challenges, especially with their disability claims processing. Further, disability experts have expressed concerns about the level of coordination among the many federal agencies that provide benefits and services to individuals with disabilities. GAO was asked to determine: (1) what steps SSA and VA have taken to modernize their disability programs and (2) to what extent SSA and VA coordinate with other federal agencies that provide services to individuals with disabilities. To do this, GAO reviewed literature, agency strategic plans and performance and accountability reports, and interviewed agency officials."
Date: May 20, 2008
Creator: United States. Government Accountability Office.
System: The UNT Digital Library
Perchlorate: A System to Track Sampling and Cleanup Results Is Needed (open access)

Perchlorate: A System to Track Sampling and Cleanup Results Is Needed

A letter report issued by the Government Accountability Office with an abstract that begins "Perchlorate, a primary ingredient in propellant, has been used for decades in the manufacture and firing of rockets and missiles. Other uses include fireworks, flares, and explosives. Perchlorate has been found in drinking water, groundwater, surface water, and soil in the United States. The National Academy of Sciences (NAS) reviewed studies of perchlorate's health effects and reported in January 2005 that certain levels of exposure may not adversely affect healthy adults but recommended more studies be conducted on the effects of perchlorate exposure in children and pregnant women. GAO determined (1) the estimated extent of perchlorate in the United States, (2) what actions have been taken to address perchlorate, and (3) what studies of perchlorate's health risks have reported."
Date: May 20, 2005
Creator: United States. Government Accountability Office.
System: The UNT Digital Library
Rural Housing Service: Agency Has Overestimated Its Rental Assistance Budget Needs over the Life of the Program (open access)

Rural Housing Service: Agency Has Overestimated Its Rental Assistance Budget Needs over the Life of the Program

A letter report issued by the General Accounting Office with an abstract that begins "The Rural Housing Service's (RHS) Section 521 Rental Assistance Program provides rental subsidies to about 250,000 rural tenants through 5-year contracts with project owners; 20-year contracts were also issued from 1978 through 1982. In early 2003, RHS reported hundreds of millions of dollars in unexpended balances, primarily tied to 5- and 20-year contracts issued from 1978 through 1982. Since contracts remain active until all funds are expired, some of these contracts will likely last as long as 38 years. GAO was asked to assess (1) the activity level of rental assistance contracts issued from 1978 through 1997 that have unexpended balances and the possibility of deobligating these balances, and (2) the activity level of rental assistance contracts issued from 1998 through 2002 and the accuracy of RHS's estimates of the rate at which these funds would be used. The Department of Agriculture commented on our responses to these questions."
Date: May 20, 2004
Creator: United States. General Accounting Office.
System: The UNT Digital Library
Defense Exports: Foreign Military Sales Program Needs Better Controls for Exported Items and Information for Oversight (open access)

Defense Exports: Foreign Military Sales Program Needs Better Controls for Exported Items and Information for Oversight

A letter report issued by the Government Accountability Office with an abstract that begins "In fiscal year 2008, the Foreign Military Sales (FMS) program sold over $36 billion dollars in defense articles and services to foreign governments. The Departments of State, Defense (DOD), and Homeland Security (DHS) all have a role in the FMS program. In 2003, GAO identified significant weaknesses in FMS control mechanisms for safeguarding defense articles transferred to foreign governments. In 2007, GAO designated the protection of technologies critical to U.S. national security a high-risk area. GAO was asked to (1) evaluate program changes State, DOD, and DHS have made since 2003 to ensure that unclassified defense articles transferred to foreign governments are authorized for shipment and monitored as required, and (2) determine what information DOD has to administer and oversee the FMS program. GAO conducted 16 case studies; analyzed U.S. port data and FMS agreements; reviewed program performance metrics; and interviewed cognizant officials."
Date: May 20, 2009
Creator: United States. Government Accountability Office.
System: The UNT Digital Library
OSHA's Voluntary Protection Programs: Improved Oversight and Controls Would Better Ensure Program Quality (open access)

OSHA's Voluntary Protection Programs: Improved Oversight and Controls Would Better Ensure Program Quality

A letter report issued by the Government Accountability Office with an abstract that begins "The Department of Labor's Occupational Safety and Health Administration (OSHA) is responsible for ensuring workplace safety. OSHA has established a number of programs, including the Voluntary Protection Programs (VPP), that take a cooperative approach to obtaining compliance with safety and health regulations and OSHA's standards. OSHA established the VPP in 1982 to recognize worksites with exemplary safety and health programs. GAO was asked to review (1) the number and characteristics of employer worksites in the VPP and factors that have influenced growth, (2) the extent to which OSHA ensures that only qualified worksites participate in the VPP, and (3) the adequacy of OSHA's efforts to monitor performance and evaluate the effectiveness of the VPP. GAO analyzed OSHA's VPP data, reviewed a representative sample of VPP case files, and interviewed agency officials."
Date: May 20, 2009
Creator: United States. Government Accountability Office.
System: The UNT Digital Library
Internet Protocol Version 6: Federal Agencies Need to Plan for Transition and Manage Security Risks (open access)

Internet Protocol Version 6: Federal Agencies Need to Plan for Transition and Manage Security Risks

A letter report issued by the Government Accountability Office with an abstract that begins "The Internet protocol (IP) provides the addressing mechanism that defines how and where information such as text, voice, and video move across interconnected networks. Internet protocol version 4 (IPv4), which is widely used today, may not be able to accommodate the increasing number of global users and devices that are connecting to the Internet. As a result, IP version 6 (IPv6) was developed to increase the amount of available IP address space. It is gaining momentum globally from regions with limited address space. GAO was asked to (1) describe the key characteristics of IPv6; (2) identify the key planning considerations for federal agencies in transitioning to IPv6; and (3) determine the progress made by the Department of Defense (DOD) and other major agencies to transition to IPv6."
Date: May 20, 2005
Creator: United States. Government Accountability Office.
System: The UNT Digital Library
Aviation Security: Efforts to Validate TSA's Passenger Screening Behavior Detection Program Underway, but Opportunities Exist to Strengthen Validation and Address Operational Challenges (open access)

Aviation Security: Efforts to Validate TSA's Passenger Screening Behavior Detection Program Underway, but Opportunities Exist to Strengthen Validation and Address Operational Challenges

A letter report issued by the Government Accountability Office with an abstract that begins "To enhance aviation security, the Transportation Security Administration (TSA) began initial testing in October 2003 of its Screening of Passengers by Observation Techniques (SPOT) program. Behavior Detection Officers (BDO) carry out SPOT's mission to identify persons who pose a risk to aviation security by focusing on behavioral and appearance indicators. GAO was asked to review the SPOT program. GAO analyzed (1) the extent to which TSA validated the SPOT program before deployment, (2) implementation challenges, and (3) the extent to which TSA measures SPOT's effect on aviation security. GAO analyzed TSA documents, such as strategic plans and operating procedures; interviewed agency personnel and subject matter experts; and visited 15 SPOT airports, among other things. Although the results from these visits are not generalizable, they provided insights into SPOT operations."
Date: May 20, 2010
Creator: United States. Government Accountability Office.
System: The UNT Digital Library
Defense Department Cyber Efforts: More Detailed Guidance Needed to Ensure Military Services Develop Appropriate Cyberspace Capabilities (open access)

Defense Department Cyber Efforts: More Detailed Guidance Needed to Ensure Military Services Develop Appropriate Cyberspace Capabilities

A letter report issued by the Government Accountability Office with an abstract that begins "The U.S. military depends heavily on computer networks, and potential adversaries see cyberwarfare as an opportunity to pose a significant threat at low cost---a few programmers could cripple an entire information system. The Department of Defense (DOD) created U.S. Cyber Command to counter cyber threats, and tasked the military services with providing support. GAO examined the extent to which DOD and U.S. Cyber Command have identified for the military services the (1) roles and responsibilities, (2) command and control relationships, and (3) mission requirements and capabilities to enable them to organize, train, and equip for cyberspace operations. GAO reviewed relevant plans, policies, and guidance, and interviewed key DOD and military service officials regarding cyberspace operations."
Date: May 20, 2011
Creator: United States. Government Accountability Office.
System: The UNT Digital Library
Debt Ceiling: Analysis of Actions Taken During the 2003 Debt Issuance Suspension Period (open access)

Debt Ceiling: Analysis of Actions Taken During the 2003 Debt Issuance Suspension Period

A letter report issued by the General Accounting Office with an abstract that begins "GAO is required to review the steps taken by the Department of the Treasury (Treasury) to avoid exceeding the debt ceiling during the 2003 debt issuance suspension period. The committee also directed GAO to determine whether all major accounts that were used for debt ceiling relief have been properly credited or reimbursed. Accordingly, GAO determined whether Treasury followed its normal investment and redemption policies and procedures for the major federal government accounts with investment authority, analyzed the financial aspects of actions Treasury took during this period, and analyzed the impact of policies and procedures Treasury used to manage the debt during the period."
Date: May 20, 2004
Creator: United States. General Accounting Office.
System: The UNT Digital Library
Information Security: Many NASA Missions-Critical Systems Face Serious Risks (open access)

Information Security: Many NASA Missions-Critical Systems Face Serious Risks

A letter report issued by the General Accounting Office with an abstract that begins "Pursuant to a congressional request, GAO provided information on the National Aeronautics and Space Administration's (NASA) information security program, focusing on: (1) whether NASA's mission-critical information systems are vulnerable to unauthorized access; (2) whether NASA is effectively managing information systems security; and (3) what NASA is doing to address the risk of unauthorized access to mission-critical systems."
Date: May 20, 1999
Creator: United States. General Accounting Office.
System: The UNT Digital Library
Tracking federal land management: Report No. 3 on federal land management actions impacting geothermal commecialization at selected target prospects in the five Pacific Rim states (open access)

Tracking federal land management: Report No. 3 on federal land management actions impacting geothermal commecialization at selected target prospects in the five Pacific Rim states

Generic land management actions affecting geothermal commerializtion in Pacific River states are reviewed. Specific federal land management actions affecting geothermal prospects in California and the Pacific Northwest are described. (MHR)
Date: May 20, 1980
Creator: unknown
System: The UNT Digital Library
Reduction of the beam breakup mode Q values in the ETA/ATA Accelerating Cells (open access)

Reduction of the beam breakup mode Q values in the ETA/ATA Accelerating Cells

Earlier Microwave Measurements of the ETA Accelerating Cells has uncovered eleven resonances in the frequency range of 0 > 850 MHz. The Q values of these modes ranged from 14 to 70. A three phase program directed at substantially reducing these Q values is reported. In particular the dampening methods described below resulted in a decrease of Q value from 40 to 5 for the beam breakup mode (TM/sub 110/) with a corresponding reduction for most of the other cavity modes.
Date: May 20, 1980
Creator: Birx, D.L.
System: The UNT Digital Library
Fundamentals and techniques of nonimaging optics for solar energy concentration. Final report (open access)

Fundamentals and techniques of nonimaging optics for solar energy concentration. Final report

Nonimaging optics is a new discipline with techniques, formalism and objectives quite distinct from the traditional methods of focusing optics. These new systems achieve or closely approach the maximum concentration permitted by the Second Law of Thermodynamics for a given angular acceptance and are often called ideal. Application of these new principles to solar energy over the past seven years has led to the invention of a new class of solar concentrators, the most well known version of which is the Compound Parabolic Concentrator or CPC. A new formalism for analyzing nonimaging systems in terms of a quantity called the geometrical vector flux has been developed. This has led not only to a better understanding of the properties of ideal concentrators but to the discovery of several new concentrator designs. One of these new designs referred to as the trumpet concentrator has several advantageous features when used as a secondary concentrator for a point focusing dish concentrator. A new concentrator solution for absorbers which must be separated from the reflector by a gap has been invented. The properties of a variety of new and previously known nonimaging optical configurations have been investigated: for example, Compound Elliptical Concentrators (CEC's) as secondary …
Date: May 20, 1980
Creator: Winston, R.
System: The UNT Digital Library