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Defense Health Care: Health Care Benefit for Women Comparable to Other Plans

Description: A letter report issued by the General Accounting Office with an abstract that begins "Half of all beneficiaries in the Department of Defense's (DOD) Tricare health care program are women. With a health care system historically oriented towards men, DOD has had to work to ensure that its women beneficiaries receive the full range of medical services they are entitled to, including obstetrical and gynecological care and diagnostic services such as Pap smears and mammograms. TRICARE-covered benefi… more
Date: May 1, 2002
Creator: United States. General Accounting Office.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Overseas Presence: Observations on a Rightsizing Framework

Description: Testimony issued by the General Accounting Office with an abstract that begins "Rightsizing is the aligning of the number and location of staff assigned to U.S. embassies with foreign policy priorities, security, and other constraints. GAO is developing a framework to enable the executive branch to assess the number and mix of embassy staff. The framework will link staffing levels to the following three critical elements of overseas operations: (1) physical security and real estate, (2) mission… more
Date: May 1, 2002
Creator: United States. General Accounting Office.
Item Type: Refine your search to only Text
Partner: UNT Libraries Government Documents Department
open access

Transportation Infrastructure: Cost and Oversight Issues on Major Highway and Bridge Projects

Description: Testimony issued by the General Accounting Office with an abstract that begins "GAO found problems with the costs and oversight of major highway and bridge projects because cost containment was not an explicit statutory or regulatory goal. The Federal Highway Administration (FHWA) did little to ensure that cost contentment was an integral part of the states' project management. The Department of Transportation's (DOT) Office of Inspector General and reviews by state audit and evaluation agenci… more
Date: May 1, 2002
Creator: United States. General Accounting Office.
Item Type: Refine your search to only Text
Partner: UNT Libraries Government Documents Department
open access

Government Purchase Cards: Control Weaknesses Expose Agencies to Fraud and Abuse

Description: Testimony issued by the General Accounting Office with an abstract that begins "The use of government purchase cards has increased in recent years as agencies have sought to eliminate the bureaucracy and paperwork long associated with small purchases. At the same time, agencies need to have adequate internal controls in place to protect the government from waste, fraud, and abuse. GAO found significant internal control weaknesses in agency purchase card programs, including inadequate review and… more
Date: May 1, 2002
Creator: United States. General Accounting Office.
Item Type: Refine your search to only Text
Partner: UNT Libraries Government Documents Department
open access

Analysis of potential for jet-impingement erosion from leaking steam generator tubes during severe accidents.

Description: This report summarizes analytical evaluation of crack-opening areas and leak rates of superheated steam through flaws in steam generator tubes and erosion of neighboring tubes due to jet impingement of superheated steam with entrained particles from core debris created during severe accidents. An analytical model for calculating crack-opening area as a function of time and temperature was validated with tests on tubes with machined flaws. A three-dimensional computational fluid dynamics code wa… more
Date: May 1, 2002
Creator: Majumdar, S.; Diercks, D. R.; Shack, W. J. & Technology, Energy
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Proposed Reference Spectral Irradiance Standards to Improve Photovoltaic Concentrating System Design and Performance Evaluation: Preprint

Description: This conference paper describes the American Society for Testing and Materials (ASTM), the International Electrotechnical Commission (IEC), and the International Standards Organization (ISO) standard solar terrestrial spectra (ASTM G-159, IEC-904-3, ISO 9845-1) provide standard spectra for photovoltaic performance applications. Modern terrestrial spectral radiation models and knowledge of atmospheric physics are applied to develop suggested revisions to update the reference spectra. We use a mo… more
Date: May 1, 2002
Creator: Myers, D. R.; Emery, K. E. & Gueymard, C.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Implications of Regional Transmission Organization Design for Renewable Energy Technologies

Description: This report summarizes the development of Regional Transmission Organizations (RTOs) and assesses the potential implications of market rules for renewable energy technologies. The report focuses on scheduling provisions, as these have proved problematic in some cases for intermittent renewable energy technologies. Market rules of four RTOs-the Pennsylvania-Maryland-New Jersey ISO, the ERCOT ISO, the Midwest ISO and the New York ISO (NYISO)-were examined to determine the impact on intermittent r… more
Date: May 1, 2002
Creator: Porter, K.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Chronological Reliability Model Incorporating Wind Forecasts to Assess Wind Plant Reserve Allocation: Preprint

Description: Over the past several years, there has been considerable development and application of wind forecasting models. The main purpose of these models is to provide grid operators with the best information available so that conventional power generators can be scheduled as efficiently and as cost-effectively as possible. One of the important ancillary services is reserves, which involves scheduling additional capacity to guard against shortfalls. In a recent paper, Strbac and Kirschen[1] proposed a … more
Date: May 1, 2002
Creator: Milligan, M. R.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Wind Power Today: Wind Energy Program Highlights 2001

Description: Wind Power Today is an annual publication that provides an overview of the U.S. Department of Energy's Wind Energy Program accomplishments for the previous year. The purpose of Wind Power Today is to show how DOE's Wind Energy Program supports wind turbine research and deployment in hopes of furthering the advancement of wind technologies that produce clean, low-cost, reliable energy. Content objectives include: educate readers about the advantages and potential for widespread deployment of win… more
Date: May 1, 2002
Item Type: Refine your search to only Book
Partner: UNT Libraries Government Documents Department
open access

Compressed Air System Improvement Project Saves Foundry Energy and Increases Production

Description: This case study highlights International Truck and Engine Corporation's optimization project on the compressed air system that serves its foundry, Indianapolis Casting Corporation. Due to the project's implementation, the system's efficiency was greatly improved, allowing the foundry to operate with less compressor capacity, which resulted in reduced energy consumption, significant maintenance savings, and more reliable production.
Date: May 1, 2002
Creator: United States. Department of Energy. Office of Energy Efficiency and Renewable Energy. Office of Industrial Technologies.
Item Type: Refine your search to only Text
Partner: UNT Libraries Government Documents Department
open access

Cu(In,Ga)Se2 Thin-Film Evolution During Growth - A Photoluminescence Study: Preprint

Description: This conference paper describes the in-depth understanding of the defect formation and resulting changes in material quality occurring during the Cu(In,Ga)Se2 growth process is vital to the successful and widespread use of this photovoltaic material. In an attempt to develop such an understanding, we investigated the growth of Cu(In,Ga)Se2 thin-films from (In,Ga)2Se3 precursors. This was achieved by using energy- and time-resolved photoluminescence spectroscopies to characterize a series of thi… more
Date: May 1, 2002
Creator: Keyes, B. M.; Dippo, P.; AbuShama, J. & Noufi, R.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Tool to Market Customer-Sited Small Wind Systems: Preprint

Description: In order to make the Wind Powering America effort a success, homeowners and landowners interested in purchasing grid-connected small wind energy systems must be provided with assistance and education. The Clean Power Estimator (CPE) program is a valuable tool for these individuals. In support of this educational effort, the National Renewable Energy Laboratory's (NRELs) National Wind Technology Center (NWTC) is integrating the CPE program with site-specific wind resource data. This paper descri… more
Date: May 1, 2002
Creator: Jimenez, T.; George, R.; Forsyth, T. & Hoff, T. E.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Determination of S-112 and Mock Tank Electrical Resistivities using Numerical Forward and Inverse Solutions

Description: The purpose of this work is to establish the electrical similarity of the Mock Tank site to S-112 tank site to determine if the Mock Tank requires modifications for the tests this summer. We accomplish this objective by determining the effective electrical resistivity of S-112 and comparing it with that of the Mock Tank. We also compare the expected sensitivities under S-112 and Mock Tank assuming that long electrodes are used.
Date: May 1, 2002
Creator: Ramirez, A & Daily, W
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Electronic Structure and Doping of P-Type Transparent Conducting Oxides: Preprint

Description: Transparent conducting oxides (TCOs) are a group of materials that are widely used in solar cells and other optoelectronic devices. Recently, Cu-containing p-type TCOs such as MII Cu2 O2 (MIII=Mg, Ca, Sr, Ba) and CuMIII O2 (MIII=Al, Ga, In) have been proposed. Using first-principles band structure methods, we have systematically studied the electronic and optical properties of these p-type transparent oxides. For MII Cu2 O2 , we predict that adding a small amount of Ca into Sr Cu2 O2 can increa… more
Date: May 1, 2002
Creator: Wei, S.-H.; Nie, X. & Zhang, S. B.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Physical Properties of HWCVD Microcrystalline Silicon Thin Films: Preprint

Description: This conference paper describes Microcrystalline silicon films were grown with different thicknesses and different hydrogen dilution ratios on glass and Si substrates. Some films were deposited with a seed layer, whereas others were deposited directly on the substrate. We used atomic force microscopy, scanning electron microscopy, and X-ray diffraction to study the morphology and crystalline structure of the samples. We did not find a significant influence of the different substrates on the mor… more
Date: May 1, 2002
Creator: Moutinho, H. R.; Romero, M. J.; Jiang, C. S.; Xu, Y.; Nelson, B. P.; Jones, K. M. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Spectral Corrections Based on Optical Air Mass: Preprint

Description: This conference paper describes the measurement of the photovoltaic (PV) performance with respect to reference conditions requires measuring the performance with respect to a reference spectrum. Procedures were developed in the mid 1980s to correct measurements for errors relating to the spectral irradiance of the light source being different from the standard and the responsivity of the irradiance detector being different from the device under test. In principle, these procedures are exact, bu… more
Date: May 1, 2002
Creator: Emery, K.; DelCueto, J. & Zaaiman, W.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Defects in Photovoltaic Materials and the Origins of Failure to Dope Them: Preprint

Description: I will review the basic physical principles underlying the formation energy of various intrinsic defects in common photovoltaic materials. I then use the above principles to explain why doping of semiconductors is, in general, limited and which design principles can be used to circumvent such limits. This work can help design strategies of doping absorber materials as well as explain how TCOs work. Recent results on the surprising stability of polar (112)+ surfaces of CIS will also be described… more
Date: May 1, 2002
Creator: Zunger, A.; Kilic, C. & Wang, L.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Comparison of Energy Production and Performance from Flat-Plate Photovoltaic Module Technologies Deployed at Fixed Tilt: Preprint

Description: This conference paper describes the performance data for 14 photovoltaic modules deployed at fixed-latitude tilt in the field are presented and compared. Module performance is monitored continuously for optimum power characteristics. Flat-plate module technologies representative of crystalline, amorphous, and polycrystalline silicon, and cadmium telluride and copper indium diselenide, are scrutinized for energy production, effective efficiency and performance ratio-ratio of effective to referen… more
Date: May 1, 2002
Creator: del Cueto, J. A.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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What is the Appropriate Reference Condition for Optimizing Concentrator Cells? Preprint

Description: This conference paper describes Consensus standards for determining the efficiency of a concentrator cell or module that have not been developed. NREL, Sandia National Laboratory, the Fraunhofer Institute for Solar Energy in Germany, and the Progress in Photovoltaics Efficiency Table authors have informally agreed upon concentrator-cell reference conditions. These conditions are 25C cell temperature, 1-sun=1000 W/m2 total irradiance, and the ASTM E891-87 direct-normal reference spectrum. Defici… more
Date: May 1, 2002
Creator: Emery, K.; Myers, D. & Kurtz, S.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

GaNPAs Solar Cells Lattice-Matched To GaP: Preprint

Description: This conference paper describes the III-V semiconductors grown on silicon substrates are very attractive for lower-cost, high-efficiency multijunction solar cells, but lattice-mismatched alloys that result in high dislocation densities have been unable to achieve satisfactory performance. GaNxP1-x-yAsy is a direct-gap III-V alloy that can be grown lattice-matched to Si when y= 4.7x - 0.1. We propose the use of lattice-matched GaNPAs on silicon for high-efficiency multijunction solar cells. We h… more
Date: May 1, 2002
Creator: Geisz, J. F.; Friedman, D. J. & Kurtz, S.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Solar Decathlon: Collegiate Challenge to Build the Future; Preprint

Description: A new collegiate competition, called the Solar Decathlon, is under way. Fourteen teams from colleges and universities across the United States, including Puerto Rico, will assemble on the National Mall in Washington, DC, in late September 2002. They will compete to capture, convert, store, and use enough solar energy to power small, solar-powered, energy-efficient homes that they have designed, built, and transported to the site. Solar Decathletes will be required to provide all the energy for … more
Date: May 1, 2002
Creator: Warner, C.; King, R.; Nahan, R. & Eastment, M.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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