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Introduction to magnetic confinement fusion diagnostics
These notes present a brief survey of some of the current diagnostic techniques used in magnetic fusion plasma devices. To give an idea of the range of parameters and geometries encountered the parameters of four representative experiments - PLT, TMX, ZT-40 and EBT-I(S) - are given. The central issue of all experiments is to understand the flow of power which can be summarized by two volume integrated equations for the ions and electrons.
Date:
June 6, 1980
Creator:
Turner, W.C.
Object Type:
Report
System:
The UNT Digital Library
Experimental development of nuclear pumped laser candidate for inertial confinement fusion driver
A report is given on progress made during the second year of a three year contract studying the feasibility of nuclear pumping the atomic iodine laser. Experimental results are presented showing efficiencies of 25--38% at converting neutron-induced nuclear reaction energy in the excimer XeBr into UV photons which can be used to pump the laser. Parametric studies were done utilizing the {sup 10}B(n,{alpha}){sup 7}Li reaction, with three bromine donor chemicals, over a range of pressures and mix ratios, to optimize the fluorescence efficiency.
Date:
June 6, 1990
Creator:
Miley, George H.
Object Type:
Report
System:
The UNT Digital Library
Mechanical structure of the Mirror Hybrid Reactor Power Plant
The mechanical structure of the LLL/GA Mirror Hybrid Reactor vessel is briefly discussed. Functional requirements and over-all design considerations leading to selection of a post-tensioned concrete reactor vessel and a modular blanket approach are indicated. Module design life of four years, module replacement, capability and remote fueling are provided by the chosen structural design. (RME)
Date:
June 6, 1977
Creator:
Culver, D.W. & Neef, W.S.
Object Type:
Article
System:
The UNT Digital Library
Trends in laser-plasma-instability experiments for laser fusion
Laser-plasma instability experiments for laser fusion have followed three developments. These are advances in the technology and design of experiments, advances in diagnostics, and evolution of the design of high-gain targets. This paper traces the history of these three topics and discusses their present state. Today one is substantially able to produce controlled plasma conditions and to diagnose specific instabilities within such plasmas. Experiments today address issues that will matter for future laser facilities. Such facilities will irradiate targets with {approx}1 MJ of visible or UV light pulses that are tens of nanoseconds in duration, very likely with a high degree of spatial and temporal incoherence. 58 refs., 4 figs.
Date:
June 6, 1991
Creator:
Drake, R.P. (California Univ., Davis, CA (United States) Lawrence Livermore National Lab., CA (United States))
Object Type:
Article
System:
The UNT Digital Library
BWR containment failure analysis during degraded-core accidents
This paper presents a containment failure mode analysis during a spectrum of postulated degraded core accident sequences in a typical 1000-MW(e) boiling water reactor (BWR) with a Mark-I wetwell containment. Overtemperature failure of containment electric penetration assemblies (CEPAs) has been found to be the major failure mode during such accidents.
Date:
June 6, 1982
Creator:
Yue, D.D.
Object Type:
Article
System:
The UNT Digital Library
Coast Guard Polar Icebreaker Modernization: Background and Issues for Congress
Report that provides background information and issues for Congress on the sustainment and modernization of the Coast Guard's polar icebreaker fleet, which performs a variety of missions supporting U.S. interests in polar regions.
Date:
June 6, 2013
Creator:
O'Rourke, Ronald
Object Type:
Report
System:
The UNT Digital Library
Trade Reorganization: Overview and Issues for Congress
Report that discusses: President Obama's trade reorganization proposal; the context of the trade reorganization debate; key issues that Congress may face related to the debate; potential policy options for Congress; and the outlook for trade reorganization.
Date:
June 6, 2013
Creator:
Akhtar, Shayerah Ilias
Object Type:
Report
System:
The UNT Digital Library
[Letter from McGregor Gray to Anthony Principi - June 6, 2005]
Letter from McGregor Gray to Anthony Principi in support of Naval Air Station Brunswick.
Date:
June 6, 2005
Creator:
Gray, McGregor
Object Type:
Letter
System:
The UNT Digital Library
College Textbooks: Students Have Greater Access to Textbook Information
A letter report issued by the Government Accountability Office with an abstract that begins "Publishers included in GAO's study have disclosed textbook information required by the Higher Education Opportunity Act (HEOA), such as pricing and format options, and made components of bundled materials available individually, but stakeholders GAO interviewed said these practices have had little effect on faculty decisions. While most publishers in GAO's study provided all relevant textbook information, two smaller publishers did not provide copyright dates of prior editions, and one did not provide certain pricing information. Publishers communicated information to faculty online and in other marketing materials, and in most cases the information was available to students and the public. In addition, publishers said they began making bundled materials available for sale individually before HEOA was passed. Faculty GAO interviewed said they typically prioritize selecting the most appropriate materials for their courses over pricing and format considerations, although they said they are more aware of affordability issues than they used to be. Changes in the availability of options in the college textbook market that are not related to HEOA, such as the increase in digital products, have also shaped faculty decisions about course materials."
Date:
June 6, 2013
Creator:
United States. Government Accountability Office.
Object Type:
Report
System:
The UNT Digital Library
Military Retiree Health Benefits: Enrollment Low in Federal Employee Health Plans under DOD Demonstration
A letter report issued by the General Accounting Office with an abstract that begins "Prior to 2001, military retirees who turned age 65 and became eligible for Medicare lost most of their Department of Defense (DOD) health benefits. The DOD-Federal Employees Health Benefits Program (FEHBP) demonstration was one of several demonstrations established to examine alternatives for addressing retirees' lack of Medicare supplemental coverage. The demonstration was mandated by the Strom Thurmond National Defense Authorization Act for Fiscal Year 1999 (NDAA 1999), which also required GAO to evaluate the demonstration. GAO assessed enrollment in the demonstration and the premiums set by demonstration plans. To do this, GAO, in collaboration with the Office of Personnel Management (OPM) and DOD, conducted a survey of enrollees and eligible nonenrollees. GAO also examined DOD enrollment data, Medicare and OPM claims data, and OPM premiums data."
Date:
June 6, 2003
Creator:
United States. General Accounting Office.
Object Type:
Report
System:
The UNT Digital Library
Disaster Recovery: Selected Themes for Effective Long-Term Recovery
Testimony issued by the Government Accountability Office with an abstract that begins "From 2008 to 2010, GAO produced a body of work on disaster recovery, including reviews of the Federal Emergency Management Agencys (FEMA) Long-Term Community Recovery efforts, recovery lessons based on past experiences at home and abroad, the use of Community Development Block Grants and Public Assistance grants and the operation of the Office of the Federal Coordinator for Gulf Coast Rebuilding (OFC). Among other things, this work highlighted themes that are important to successful disaster recovery efforts. Three of these key themes are: (1) the need for clearly defined recovery roles and responsibilities; (2) the importance of effective coordination and collaboration among recovery stakeholders; and (3) the value of periodic evaluation of, and reporting on, recovery progress."
Date:
June 6, 2012
Creator:
United States. Government Accountability Office.
Object Type:
Text
System:
The UNT Digital Library
Afghanistan: USAID Oversight of Assistance Funds and Programs
Testimony issued by the Government Accountability Office with an abstract that begins "The U.S. Agency for International Development (USAID) has experienced systemic challenges that have hindered its ability to manage and oversee contracts and assistance instruments in Afghanistan. Key challenges include gaps in planning for the use of contractors and assistance recipients and having visibility into their numbers. For example, GAO reported in April 2010 that, absent strategic planning for its use of contractors, individual offices within USAID often made case-by-case decisions on using contractors to support contract or grant administration and risks, such as possible conflicts of interest, were not always addressed. While having reliable data on contractors and assistance recipients is a starting point for informing agency decisions and ensuring proper management, GAO has also reported on limitations in USAIDs visibility into the number and value of contracts and assistance instruments in Afghanistan, as well as the number of personnel working under them. USAID, along with other agencies, has not implemented GAOs recommendation to address such limitations. USAID, however, has taken other actions to mitigate risks associated with awarding contracts and assistance instruments in Afghanistan. In June 2011, GAO reported on USAIDs vendor vetting program, then in its …
Date:
June 6, 2012
Creator:
United States. Government Accountability Office.
Object Type:
Text
System:
The UNT Digital Library
Managing for Results: Leading Practices Should Guide the Continued Development of Performance.gov
A letter report issued by the Government Accountability Office with an abstract that begins "The GPRA Modernization Act of 2010 (GPRAMA) requires Performance.gov to provide program and performance information accessible to the public and members and committees of Congress. GAO used leading practices from HowTo.gov, a key source of guidance for federal website development and management, to assess the website and found that although Performance.gov incorporates some leading practices, opportunities exist to further incorporate them through continued development. For example, consistent with leading practices, the Office of Management and Budget (OMB), working with the General Services Administration (GSA) and the Performance Improvement Council (PIC), provided information about the purposes and audiences for the website, but they have made limited efforts to clarify how audiences can use the information provided. If the specific uses of Performance.gov are not clarified, while taking into consideration what the law requires, it could lead to varying ideas and expectations for how Performance.gov should be developed."
Date:
June 6, 2013
Creator:
United States. Government Accountability Office.
Object Type:
Report
System:
The UNT Digital Library
Department of Energy: Implementation and Use of Other Transactions Authority Provided in the Energy Policy Act of 2005
Correspondence issued by the Government Accountability Office with an abstract that begins "Since the Department of Energy (DOE) was established in 1977, one of its missions has been to promote the nation's energy security through research, development, and demonstration of advanced technologies for meeting future energy demands and diversifying the nation's energy portfolio. As part of this mission, DOE's Office of Energy Efficiency and Renewable Energy conducts research, development, and demonstration activities in partnership with industry to advance a diverse supply of clean power technologies. The fiscal year 2008 budget for these activities was $1.7 billion. The Energy Policy Act of 2005, the first comprehensive energy legislation in more than a decade, includes provisions to address the nation's long-term energy challenges. Key goals of the act include diversifying the nation's energy supply by promoting alternative and renewable sources of energy and by investing in science and technology. Provisions in the act promote the use of solar and wind power, establish a loan-guarantee program to encourage private investment in new energy technologies, and authorize demonstration projects for producing ethanol from cellulosic sources such as forest residues, agricultural residues, and scrap wood. To provide DOE with more flexibility to enter into agreements …
Date:
June 6, 2008
Creator:
United States. Government Accountability Office.
Object Type:
Text
System:
The UNT Digital Library
Internal Revenue Service: Status of Recommendations from Financial Audits and Related Financial Management Reports
A letter report issued by the Government Accountability Office with an abstract that begins "In its role as the nation's tax collector, the Internal Revenue Service (IRS) has a demanding responsibility in annually collecting over $2 trillion in taxes, processing hundreds of millions of tax and information returns, and enforcing the nation's tax laws. Since its first audit of IRS's financial statements in fiscal year 1992, GAO has identified a number of weaknesses in IRS's financial management operations. In related reports, GAO has recommended corrective action to address those weaknesses. Each year, as part of the annual audit of IRS's financial statements, GAO not only makes recommendations to address any new weaknesses identified but also follows up on the status of weaknesses GAO identified in previous years' audits. The purpose of this report is to (1) assist IRS management in tracking the status of audit recommendations and actions needed to fully address them and (2) demonstrate how the recommendations fit into IRS's overall management and internal control structure."
Date:
June 6, 2006
Creator:
United States. Government Accountability Office.
Object Type:
Report
System:
The UNT Digital Library
Defense Acquisitions: Role of Lead Systems Integrator on Future Combat Systems Program Poses Oversight Challenges
A letter report issued by the Government Accountability Office with an abstract that begins "The Army's Future Combat Systems (FCS) program features multiple new systems linked by a first-of-a-kind information network. The Army contracted with a lead systems integrator (LSI) for FCS that could serve in a more expansive role than a typical prime contractor would. In response to a congressional mandate, this report addresses (1) why the Army decided to employ an LSI for the FCS program; (2) the nature of the LSI's working relationship with the Army; and (3) how FCS contract fees, provisions, and incentives work. In conducting its work, GAO reviewed extensive program documentation and held discussions with key officials at DOD and throughout the FCS program."
Date:
June 6, 2007
Creator:
United States. Government Accountability Office.
Object Type:
Report
System:
The UNT Digital Library
The Status of Major HUD Funding Awarded to the Memphis Housing Authority
Correspondence issued by the General Accounting Office with an abstract that begins "Pursuant to a congressional request, GAO reviewed the Memphis Housing Authority's (MHA) use of Department of Housing and Urban Development (HUD) funds, focusing on: (1) MHA's receipt of funds from HUD's Comprehensive Grant, HOPE VI, and Public Housing Drug Elimination programs from fiscal year (FY) 1994 through fiscal 1998; and (2) a comparison of MHA's draw down of funds from these programs with that of three other public housing authorities that are similar in the number of housing units they manage and the amount of Comprehensive Grant, HOPE VI, and Public Housing Drug Elimination funds that they receive from HUD."
Date:
June 6, 2000
Creator:
United States. General Accounting Office.
Object Type:
Text
System:
The UNT Digital Library
Commercial Space Launch Act: Preliminary Information on Issues to Consider for Reauthorization
Testimony issued by the Government Accountability Office with an abstract that begins "GAOs work to date work indicates the United States provides less indemnification for third party losses than China, France, and Russia, according to studies. These countries put no limit on the amount of government indemnification coverage currently available through the Commercial Space Launch Act Amendments of 1988 (CSLA) which is about $2.7 billion per launch. These commitments to pay have never been tested because there has never been a third party claim that exceeded the launch companys insurance and thus reached the level of government indemnification."
Date:
June 6, 2012
Creator:
United States. Government Accountability Office.
Object Type:
Text
System:
The UNT Digital Library
Force Structure: Improved Cost Information and Analysis Needed to Guide Overseas Military Posture Decisions
A letter report issued by the Government Accountability Office with an abstract that begins "Although the Department of Defense (DOD) has conducted some analysis to support two recent global posture decisions, the full cost implications of these decisions are unknown."
Date:
June 6, 2012
Creator:
United States. Government Accountability Office.
Object Type:
Report
System:
The UNT Digital Library
Veterans' Pension Benefits: Improvements Needed to Ensure Only Qualified Veterans Receive Benefits
Testimony issued by the Government Accountability Office with an abstract that begins "In summary, we identified over 200 organizations that market financial and estate planning services to help pension claimants with excess assets qualify for pension benefits. These organizations consist primarily of financial planners and attorneys who offer products such as annuities and trusts. All 19 organizations our investigative staff contacted said a claimant can qualify for pension benefits by transferring assets before applying, which is permitted under the program. Two organization representatives said they helped pension claimants with substantial assets, including millionaires, obtain VAs approval for benefits. Some products and services provided, such as deferred annuities, may not be suitable for the elderly because they may not have access to their funds within their expected lifetime without facing high withdrawal fees. Also, such asset transfers may result in ineligibility for Medicaid coverage for long-term care for a period of time. The majority of the 19 organizations contacted charged fees, ranging from a few hundred dollars for benefits counseling to $10,000 for establishment of a trust. In our report we asked Congress to consider establishing a look-back and penalty period for pension claimants who transfer assets prior to applying for …
Date:
June 6, 2012
Creator:
United States. Government Accountability Office.
Object Type:
Text
System:
The UNT Digital Library
Electricity Markets: FERC's Role in Protecting Consumers
Correspondence issued by the General Accounting Office with an abstract that begins "The electricity industry is currently undergoing a restructuring, evolving from an industry characterized by monopoly utilities that provide consumers with electricity at regulated rates to a competitive industry in which prices are largely determined by supply and demand. The Federal Energy Regulatory Commission (FERC) has been engaged in this restructuring effort and is currently working, among other things, to foster competitive wholesale energy markets across the nation while protecting consumers against abuses of market power. At the retail level, about half the states have pursued restructuring their retail electricity markets in order to allow consumers such as residential, commercial, and industrial customers to choose their electricity suppliers. Proponents of electricity restructuring believe that it will ultimately provide consumers with lower electricity prices, more services, and technological innovation. However, opponents cite extremely high prices and market manipulation in California as evidence that, without more stringent oversight, restructuring may leave consumers vulnerable to higher prices, market manipulation, and less reliable service. In light of ongoing electricity restructuring efforts, Congress asked us to describe FERC's role in protecting electricity consumers."
Date:
June 6, 2003
Creator:
United States. General Accounting Office.
Object Type:
Text
System:
The UNT Digital Library
Telecommunications: Full Adoption of Sound Transition Planning Practices by GSA and Selected Agencies Could Improve Planning Efforts
A letter report issued by the Government Accountability Office with an abstract that begins "With the current governmentwide telecommunications contracts set to expire, the General Services Administration's (GSA) Federal Technology Service (FTS) and its customer agencies must prepare to transition their services to a new contract vehicle. The previous federal effort to transition telecommunications services proved to be a large, complex task. GAO was asked to determine to what extent (1) selected agencies used sound practices in preparing for the transition and (2) GSA's FTS has prepared for the transition by addressing previous lessons learned and providing agencies with guidance on sound transition planning."
Date:
June 6, 2006
Creator:
United States. Government Accountability Office.
Object Type:
Report
System:
The UNT Digital Library
Financial Management: Effective Implementation of FFMIA Is Key to Providing Reliable, Useful, and Timely Data
Testimony issued by the General Accounting Office with an abstract that begins "The Federal Financial Management Improvement Act (FFMIA) of 1996 ensures that agency financial management systems routinely provide reliable and timely financial information on the investment of resources, reduced costs and programs oversight. Although many agencies are receiving unqualified opinions on their financial statements, auditor determinations of FFMIA compliance are lagging. To achieve the financial management improvements envisioned by the Chief Financial Officers Act, FFMIA, and more recently, the President's Management Agenda, agencies need to modernize their financial systems to generate reliable, useful, and timely financial information throughout the year and at year-end."
Date:
June 6, 2002
Creator:
United States. General Accounting Office.
Object Type:
Text
System:
The UNT Digital Library
Financial Audits: American Battle Monuments Commission
Testimony issued by the General Accounting Office with an abstract that begins "Pursuant to a congressional request, GAO discussed the American Battle Monuments Commission's (ABMC) financial statements audits, focusing on: (1) the legislative initiatives that were designed to improve financial management across the federal government; (2) the history of ABMC's financial accountability, focusing specifically on the World War II memorial fund; and (3) the results of GAO's most recent financial audits."
Date:
June 6, 2000
Creator:
United States. General Accounting Office.
Object Type:
Text
System:
The UNT Digital Library