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A Measurement of the Top Quark Mass with the D0 Detector at s**(1/2) = 1.96-TeV using the Matrix Element Method

Description: Using a data set of 158 and 169 pb{sup -1} of D0 Run-II data in the electron and muon plus jets channel, respectively, the top quark mass has been measured using the Matrix Element Method. The method and its implementation are described. Its performance is studied in Monte Carlo using ensemble tests and the method is applied to the Moriond 2004 data set.
Date: April 1, 2004
Creator: Kroeninger, Kevin Alexander
Partner: UNT Libraries Government Documents Department
open access

Introduction to Building Systems Performance: Houses That Work II; Period of Performance: January 2003--December 2003

Description: Buildings should be suited to their environments. Design and construction must be responsive to varying seismic risks, wind loads, and snow loads, as well as soil conditions, frost depth, orientation, and solar radiation. In addition, building envelopes and mechanical systems should be designed for a specific hygro-thermal regions, rain exposure, and interior climate. The Building Science Consortium (BSC) design recommendations are based on the hygro-thermal regions with reference to the annual… more
Date: April 1, 2004
Partner: UNT Libraries Government Documents Department
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Development of an In-Line Minority-Carrier Lifetime Monitoring Tool for Process Control during Fabrication of Crystalline Silicon Solar Cells: Annual Subcontract Report, June 2003 (Revised)

Description: Under the PV Manufacturing R&D subcontract''Development of an In-Line, Minority-Carrier Lifetime Monitoring Tool for Process Control during Fabrication of Crystalline Silicon Solar Cells'', Sinton Consulting developed prototypes for several new instruments for use in the manufacture of silicon solar cells. These instruments are based on two families of R&D instruments that were previously available, an illumination vs. open-circuit-voltage technique and the quasi-steady state RF photoco… more
Date: April 1, 2004
Creator: Sinton, R. A.
Partner: UNT Libraries Government Documents Department
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Calculation of Phonon Density of States for Alpha-U

Description: Phonon density of states for {alpha}-U was calculated with the linear response theory and the RSPFLAPW (fully relativistic full potential spin-polarized linearized-augmented-plane-wave) method. It has been used for studying the temperature dependence of the specific heat of uranium. It was shown that the details of the phonon DOS are not very important for the specific heat, and practically the same results can be obtained with Debye model.
Date: April 1, 2004
Creator: Kutepov, A
Partner: UNT Libraries Government Documents Department
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Aggregation of Distributed Generation Assets in New York State: Appendix

Description: This report appendix describes aspects of a project to demonstrate the technical and economic feasibility of aggregating distributed generating resources in New York State. This project demonstrates a system that allows distributed generation (DG) to participate in competitive markets in much the same way as large central-station power plants. This approach involves aggregating the distributed demand-side resources into a single transaction entity consistent with the requirements of the New Yor… more
Date: April 1, 2004
Partner: UNT Libraries Government Documents Department
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Distribution of incoherent space - Charge tune shift of a bi-Gaussian beam

Description: The incoherent space-charge self-force tune shift of a bi-Gaussian coasting beam is revisited. The distribution density of the incoherent horizontal or vertical space-charge tune shift is computed numerically using a statistical method. Analytic approach has also been made with approximation. The results show a broad peak centered about 0.633 with a rms spread 0.168 of the linear space-charge tune shift.
Date: April 1, 2004
Creator: Ng, K. Y.
Partner: UNT Libraries Government Documents Department
open access

Sampling ENDL Watt Fission Spectra

Description: All of the fission spectra in the Evaluated Nuclear Data Library, ENDL [1], are defined by a simple analytical function: a Watt spectrum [2], W(a,b,E') = C*Exp[-a*E']*Sinh[(b*E'){sup 1/2}]. Where the normalization, C, is given by, C = [{pi}b/4a]{sup 1/2} Exp[b/4a]/a. The coefficients a and b vary from one isotope to another and also vary weakly with the incident neutron energy. Here E' is the secondary energy, i.e., the energy at which the fission neutrons are emitted. In ENDL energy units of M… more
Date: April 1, 2004
Creator: Cullen, D E
Partner: UNT Libraries Government Documents Department
open access

WindPACT Rotor Design Study: Hybrid Tower Design; Period of Performance: 29 June 2000 -- 28 February 2004

Description: The cost of a wind turbine tower can represent as much as 20% of the cost of an entire megawatt-scale horizontal axis wind turbine (HAWT) and as much as 10% of the total cost of energy. The tower is a major cost component, and its design is important: Its structural properties are key to the response of the rotor; its height determines the wind regime that the rotor experiences; it allows access to the turbine nacelle and rotor; and it houses components of the electrical connection and the cont… more
Date: April 1, 2004
Creator: Malcolm, D. J.
Partner: UNT Libraries Government Documents Department
open access

New Method for Dual-Axis Fatigue Testing of Large Wind Turbine Blades Using Resonance Excitation and Spectral Loading

Description: The blades of a wind turbine are generally considered to be the most critical component of the wind turbine system. The fundamental purpose of performing fatigue tests on wind turbine blades is to demonstrate that a blade, when manufactured to a certain set of specifications, has the prescribed reliability and service life. The purpose of the research conducted for this project is the advancement of knowledge and capabilities in the area of wind turbine blade fatigue testing.
Date: April 1, 2004
Creator: White, D.
Partner: UNT Libraries Government Documents Department
open access

Distribution of incoherent space-charge tune shift of a bigaussian beam

Description: The incoherent space-charge self-force tune shift of a bi-Gaussian coasting beam is revisited. The distribution density of the incoherent horizontal or vertical space-charge tune shift is computed numerically using a statistical method. Analytic approach has also been made with approximation. The results show a broad peak centered about 0.633 with a rms spread 0.168 of the linear space-charge tune shift.
Date: April 1, 2004
Creator: Ng, K. Y.
Partner: UNT Libraries Government Documents Department
open access

Characterization of Vadose Zone Sediments Below the TX Tank Farm: Probe Holes C3830, C3831, C3832 and 299-W10-27

Description: Pacific Northwest National Laboratory performed detailed analyses on vadose zone sediments from within Waste Management Area T-TX-TY. This report contains all the geologic, geochemical, and selected physical characterization data collected on vadose zone sediment recovered from three probe holes (C3830, C3831, and C3832) in the TX Tank Farm, and from borehole 299-W-10-27. Sediments from borehole 299-W-10-27 are considered to be uncontaminated sediments that can be compared with contaminated sed… more
Date: April 1, 2004
Creator: Serne, R JEFFREY.; Bjornstad, Bruce N.; Horton, Duane G.; Lanigan, David C.; Lindenmeier, Clark W.; Lindberg, Michael J. et al.
Partner: UNT Libraries Government Documents Department
open access

Large-Scale PV Module Manufacturing Using Ultra-Thin Polycrystalline Silicon Solar Cells: Annual Subcontract Report, 1 April 2002--30 September 2003 (Revised)

Description: The goal of BP Solar's Crystalline PVMaT program is to improve the present polycrystalline silicon manufacturing facility to reduce cost, improve efficiency, and increase production capacity. Key components of the program are: increasing ingot size; improving ingot material quality; improving material handling; developing wire saws to slice 100 ..mu..m thick silicon wafers on 200 ..mu..m centers; developing equipment for demounting and subsequent handling of very thin silicon wafers; developing… more
Date: April 1, 2004
Creator: Wohlgemuth, J. & Shea, S. P.
Partner: UNT Libraries Government Documents Department
open access

Atlas de Recursos Eólicos del Estado de Oaxaca

Description: The Oaxaca Wind Resource Atlas, produced by the National Renewable Energy Laboratory's (NREL's) wind resource group, is the result of an extensive mapping study for the Mexican State of Oaxaca. This atlas identifies the wind characteristics and distribution of the wind resource in Oaxaca. The detailed wind resource maps and other information contained in the atlas facilitate the identification of prospective areas for use of wind energy technologies, both for utility-scale power generation and … more
Date: April 1, 2004
Creator: Elliott, D.; Schwartz, M.; Scott, G.; Haymes, S.; Heimiller, D. & George, R.
Partner: UNT Libraries Government Documents Department
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PV Inverter Products Manufacturing and Design Improvements for Cost Reduction and Performance Enhancements: Final Subcontract Report, November 2003 (Revised)

Description: The specific objectives of this subcontracted development work by Xantrex Technology Inc. were to: (1) Capture the newest digital signal processor (DSP) technology to create high-impact,''next generation'' power conversion equipment for the PV industry; (2) Create a common resource base for three PV product lines. This standardized approach to both hardware and software control platforms will provide significant market advantage over foreign competition; (3) Achieve cost reductions through incr… more
Date: April 1, 2004
Creator: West, R.
Partner: UNT Libraries Government Documents Department
open access

Evaluation of Xenon Gas Detection as a Means for Identifying Buried Transuranic Waste at the Radioactive Waste Management Complex, Idaho National Environmental and Engineering Laboratory

Description: Xenon is produced as a fission product in nuclear reactors and through spontaneous fission of some transuranic (TRU) isotopes. Xenon gas is nearly inert and will be released from buried TRU waste. This document describes and evaluates the potential for analyzing xenon isotopes in soil gas to detect TRU waste in the subsurface at the Idaho National Environmental and Engineering Laboratory's Radioactive Waste Management Complex.
Date: April 1, 2004
Creator: Dresel, P Evan & Waichler, Scott R.
Partner: UNT Libraries Government Documents Department
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TDNA Monthly Office Manager's Report: Febraury/March 2004

Description: Monthly report written by the Texas Daily Newspaper Association's (TDNA's) office manager, Darla Thompson, to Phil Berkebile providing a summary of revenues and account balances, programs, meetings, and other activities in the office during the previous month.
Date: April 1, 2004
Creator: Thompson, Darla
Partner: UNT Libraries Special Collections
open access

Results from ORNL Characterization of Archive German Particles

Description: This document is a compilation of the characterization data obtained on a sample of TRISO-coated 500 {micro}m UO{sub 2} produced by the Germans and obtained by the AGR program for use as a reference material. This sample came from the EUO 2358-2365 composite studied by General Atomics (GA) and referenced in GA document No.910852 'Acceptance Test report for German Fuel Particles'. The ORNL designation for the material characterized was AGR-06.
Date: April 1, 2004
Creator: Hunn, John D
Partner: UNT Libraries Government Documents Department
open access

MOAB : a mesh-oriented database.

Description: A finite element mesh is used to decompose a continuous domain into a discretized representation. The finite element method solves PDEs on this mesh by modeling complex functions as a set of simple basis functions with coefficients at mesh vertices and prescribed continuity between elements. The mesh is one of the fundamental types of data linking the various tools in the FEA process (mesh generation, analysis, visualization, etc.). Thus, the representation of mesh data and operations on those … more
Date: April 1, 2004
Creator: Tautges, Timothy James; Ernst, Corey; Stimpson, Clint; Meyers, Ray J. & Merkley, Karl
Partner: UNT Libraries Government Documents Department
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Implementation of Fisheries Enhancement Opportunities on the Coeur d'Alene Reservation; Coeur d'Alene Tribe Fish, Water, and Wildlife Program, REVISED 2002 Annual Report.

Description: Historically, the Coeur d'Alene Indian Tribe depended on runs of anadromous salmon and steelhead along the Spokane River and Hangman Creek, as well as resident and adfluvial forms of trout and char in Coeur d'Alene Lake, for survival. Dams constructed in the early 1900s on the Spokane River in the City of Spokane and at Little Falls (further downstream) were the first dams that initially cut-off the anadromous fish runs from the Coeur d'Alene Tribe. These fisheries were further removed by the c… more
Date: April 1, 2004
Creator: Vitale, Angelo; Lamb, Dave & Scott, Jason
Partner: UNT Libraries Government Documents Department
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The role of technology in reducing health care costs. Phase II and phase III.

Description: In Phase I of this project, reported in SAND97-1922, Sandia National Laboratories applied a systems approach to identifying innovative biomedical technologies with the potential to reduce U.S. health care delivery costs while maintaining care quality. The effort provided roadmaps for the development and integration of technology to meet perceived care delivery requirements and an economic analysis model for development of care pathway costs for two conditions: coronary artery disease (CAD) and … more
Date: April 1, 2004
Creator: Cilke, John F.; Parks, Raymond C.; Funkhouser, Donald Ray; Tebo, Michael A.; Murphy, Martin D.; Hightower, Marion Michael et al.
Partner: UNT Libraries Government Documents Department
open access

Dimensional errors in LIGA-produced metal structures due to thermal expansion and swelling of PMMA.

Description: Numerical methods are used to examine dimensional errors in metal structures microfabricated by the LIGA process. These errors result from elastic displacements of the PMMA mold during electrodeposition and arise from thermal expansion of the PMMA when electroforming is performed at elevated temperatures and from PMMA swelling due to absorption of water from aqueous electrolytes. Both numerical solutions and simple analytical approximations describing PMMA displacements for idealized linear and… more
Date: April 1, 2004
Creator: Kistler, Bruce L.; Dryden, Andrew S.; Crowell, Jeffrey A.W. & Griffiths, Stewart K.
Partner: UNT Libraries Government Documents Department
open access

Tonopah Test Range Post-Closure Inspection Annual Report, Tonopah Test Range, Nevada, Calendar Year 2003

Description: This post-closure inspection report provides documentation of the semiannual inspection activities, maintenance and repair activities, and conclusions and recommendations for calendar year 2003 for eight corrective action units located on the Tonopah Test Range, Nevada.
Date: April 1, 2004
Creator: United States. National Nuclear Security Administration. Nevada Site Office.
Partner: UNT Libraries Government Documents Department
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Large batch dimensional metrology demonstrated in the example of a LIGA fabricated spring.

Description: Deep x-ray lithography in combination with electroforming is capable of producing high precision metal parts in small lot series. This study deals with a high aspect ratio structure with overall dimensions on the order of 10 mm x 7 mm x 1.5 mm, with the smallest line width being 150 {micro}m. The lateral deviation from the design is to be kept to a minimum, preferably below 5 {micro}m. To ensure adequate quality control, a semi-automated metrology technique has been established to measure all p… more
Date: April 1, 2004
Creator: Aigeldinger, Georg; Skala, Dawn M. & Ceremuga, Joseph T.
Partner: UNT Libraries Government Documents Department
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