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APPLICATIONS OF SNAP REACTOR SYSTEMS TO COMMUNICATIONS SATELLITES

Description: Methods are presented for determining the electric power requirements of a given communications mission in terms of mission and orbit parameters. Analyses were made of possible applications of available and projected space auxiliary power units in these satellites. The satellitc as a communication node is discussed. Example calculations are given. (M.C.G.)
Date: July 30, 1962
Creator: Wimmer, R.E.
Partner: UNT Libraries Government Documents Department
open access

Future engineering needs of mirror fusion reactors

Description: Fusion research has matured during the last decade and significant insight into the future program needs has emerged. While some will properly note that the crystal ball is cloudy, it is equally important to note that the shape and outline of our course is discernable. In this short summary paper, I will draw upon the National Mirror Program Plan for mirror projects and on available design studies of these projects to put the specific needs of the mirror program in perspective.
Date: July 30, 1982
Creator: Thomassen, K.I.
Partner: UNT Libraries Government Documents Department
open access

Savannah River Site computing architecture migration guide

Description: The SRS Computing Architecture is a vision statement for site computing which enumerates the strategies which will guide SRS computing efforts for the 1990s. Each strategy is supported by a number of feature statements which clarify the strategy by providing additional detail. Since it is a strategic planning document, the Architecture has sitewide applicability and endorsement but does not attempt to specify implementation details. It does, however, specify that a document will be developed to guide the migration from the current site environment to that envisioned by the new architecture. The goal of this document, the SRS Computing Architecture Migration Guide, is to identify specific strategic and tactical tasks which would have to be completed to fully implement the architectural vision for site computing as well as a recommended sequence and timeframe for addressing these tasks. It takes into account the expected availability of technology, the existing installed base, and interdependencies among architectural components and objectives.
Date: July 30, 1991
Partner: UNT Libraries Government Documents Department
open access

Model validation and sensitivity analysis of solar collector loops. Final technical report

Description: The experimental solar collector systems at Middlebury College have been modified to permit short time resolution studies of solar collector loop performance. A variety of experiments have been performed to measure the following system properties: (a) collector efficiency, (b) collector response to step changes in insolation, (c) collector response to the introduction of cold inlet water, and (d) pump cycling as a function of control sensor location and set points. Data from these experiments have been supplied to the solar group at Drexel for validation of their analytical collector loop model.
Date: July 30, 1980
Partner: UNT Libraries Government Documents Department
open access

D7H-test results

Description: Data were reduced from the voltage-time relations stored in files D7H001 to D7H090 on HP1000. The I-B calibration curve is included. The data base is shown and can be used by the 9845B. The data include the quench location, Q/sub 2/ layer 1 top, Q/sub 3/ layer 1 bottom and the quench current and its normalized value with respect to short sample, I/sub c/ = 4920A at 4.4 K, I/sub c/ = 6710 A at 1.8 K. The resistance (..cap omega../cm) was calculated using the propagation time according to the voltage change across the measured sections. The conductor potential length are L/sub 5/ /sub 9/ = 48.6 cm, L/sub 6/ /sub 10/ = 17.9 cm, L/sub 7/ /sub 11/ = 40.6 cm. The turn to turn velocity V/sub t/ was calculated dividing the nominal turn to turn distance (58 mil) by the propagation time (Trans. Time). The quench time T/sub q/ was measured from the time the resistive rise starts until the energy extraction system fires.
Date: July 30, 1982
Creator: Caspi, S.
Partner: UNT Libraries Government Documents Department
open access

Double-mode pulsation

Description: Double mode pulsation is a very pervasive phenomenon in stars all over the Hertzsprung-Russell diagram. In order of increasing radius, examples are: ZZ Ceti stars, the sun, the delta Scuti stars, RR Lyrae variables, the ..beta.. Cephei variables and those related to them, Cepheids, and maybe even the Mira stars. These many modes have been interpreted as both radial and nonradial modes, but in many cases the actual mode has not been clearly identified. Yellow giants seem to be the most simple pulsators with a large majority of the RR Lyrae variables and Cepheids showing only one pulsation period. We limit this review to those very few cases for classical Cepheids and RR Lyrae variables which display two modes. For these we know many facts about these stars, but the actual cause of the pulsation in two modes simultaneously remains unknown.
Date: July 30, 1982
Creator: Cox, A. N.
Partner: UNT Libraries Government Documents Department
open access

Study on reduction of accessory horsepower requirements. Fourth quarterly progress report

Description: The program objective is to evolve and define an accessory drive system that will minimize system power consumption of driven accessories on an internal combustion engine in a passenger automobile. The initial three program phases established concept feasibility, determined potential fuel savings, and selected a drive system design for concept mechanization. During this quarter the major program accomplishments were: selection of candidate belt-drive concepts; completion of Phase III baseline vehicle drive systems physical and operational envelopes; completion of analysis for a mechanically controlled direct-operated belt drive with input programming; and completion of design layout and analysis for a hydromechanically controlled, servo-operated belt drive with output-speed sensing. (LLL)
Date: July 30, 1975
Partner: UNT Libraries Government Documents Department
open access

Geothermal development and land use/energy planning by the State of California and its political subdivisions

Description: California law contains several vehicles for the implementation of geothermal planning. These mechanisms and their impact are examined. First, at the State level upon the California Energy Commission and the Division of Oil and Gas in the Department of Conservation. After some background on county planning in California, the unique situation in the counties of greatest geothermal potential is presented: Imperial County and the four Geysers counties as well as their joint powers agency. Conclusions and recommendations are included. (MHR)
Date: July 30, 1978
Partner: UNT Libraries Government Documents Department
open access

Investigation of the cryogenic mechanical properties of low thermal-expansion superalloys

Description: Four Fe-based superalloys, JBK-75, Incoloy 903, Incoloy 905, and Incoloy 909 were evaluated as tube materials for ICCS Nb/sub 3/Sn superconductors. Evaluation consisted of 4-K tensile and elastic-plastic fracture-toughness testing, and a microstructural characterization of unwelded and autogenously gas-tungsten-arc welded sheet given a simulated postweld processing treatment of 15% cold reduction by rolling followed by a Nb/sub 3/Sn-reaction heat treatment of 96 hours at 700/sup 0/C plus 48 hours at 730/sup 0/C. Results indicate that JBK-75 and Incoloy 903 showed satisfactory combinations of strength and toughness for ICCS tube use requiring long Nb/sub 3/Sn-reaction heat treatments. Incoloy 905 welds and 909 showed unacceptable fracture toughness. Results are discussed in terms of microstructural changes caused by the extended Nb/sub 3/Sn-reaction heat treatment.
Date: July 30, 1985
Creator: Summers, L.T. & Dalder, E.N.C.
Partner: UNT Libraries Government Documents Department
captions transcript

[News Clip: Abortion]

Description: Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date: July 30, 1994, 6:00 p.m.
Duration: 1 minute 01 second
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Partner: UNT Libraries Special Collections
open access

Polarizability corrections in stimulated Raman propagation

Description: Traditional descriptions of stimulated Raman scattering relate the various Stokes and anti-Stokes fields to the incident pump field by means of a polarizability (tensor). This description is usable for pulsed radiation but it fails when the pump carrier frequency coincides with a resonant frequency of the medium. We here describe a simple procedure for correcting the traditional polarizability approximation for pulse envelopes so as to account for effects of finite pump bandwidth. The correction amounts to the introduction of an auxiliary field envelope that incorporates pump dispersion. We apply this procedure to the equations for a degenerate, Doppler broadened ensemble of three-level atoms, in which the uppermost (virtual) level is close to resonance with the pump carrier frequency. This system becomes a two-level Raman system, but with a correction to the Raman Hamiltonian and the propagation equation. The plane-wave propagation equations presented include dispersive as well as Raman effects, and allow arbitrary combinations of field polarizations. We comment on several incidental aspects of Raman propagation, including dynamic Stark shifts, sublevel averages and fluence equations.
Date: July 30, 1991
Creator: Shore, B. W.; Johnson, M. A. & Lowder, S.
Partner: UNT Libraries Government Documents Department
open access

Coal surface control for advanced fine coal flotation

Description: The primary objective in the scope of this research project is to develop advanced flotation methods for coal cleaning in order to achieve near total pyritic-sulfur removal at 90% Btu recovery, using coal samples procured from three major US coal seams. Concomitantly, the ash content of these coals is to be reduced to 6% or less. Investigation of mechanisms for the control of coal and pyrite surfaces prior to fine coal flotation is the main aspect of the project objectives. The results of this research are to be made available to ICF Kaiser Engineers who are currently working on the Engineering Development of Advanced Flotation under a separate contract with DOE under the Acid Rain Control Initiative program. A second major objective is to investigate factors involved in the progressive weathering and oxidation of coal that had been exposed to varying degrees of weathering, namely, open to the atmosphere, covered and in an argon-inerted'' atmosphere, over a period of twelve months. After regular intervals of weathering, samples of the three base coals (Illinois No. 6, Pittsburgh No. 8 and Upper Freeport PA) were collected and shipped to both the University of Pittsburgh and the University of California at Berkeley for characterization studies of the weathered material. 29 figs., 29 tabs.
Date: July 30, 1991
Creator: Fuerstenau, D. W.; Sastry, K. V. S.; Hanson, J. S.; Diao, J.; De, A.; Sotillo, F. et al.
Partner: UNT Libraries Government Documents Department
open access

The Army's Armored Multi-Purpose Vehicle (AMPV): Background and Issues for Congress

Description: This report provides background information on the Armored Multi-Purpose Vehicle (AMPV) and it discusses the Army's proposed replacement to the Vietnam-era M-113 personnel carriers, which are still in service in a variety of support capacities in Armored Brigade Combat Teams (ABCTs).
Date: July 30, 2014
Creator: Feickert, Andrew
Partner: UNT Libraries Government Documents Department
open access

Trade Remedies: A Primer

Description: This report explains, first, U.S. antidumping and countervailing duty statutes and investigations. Second, it describes safeguard statutes and investigative procedures. Third, it briefly presents trade-remedy related legislation in the 110th Congress. Finally, the appendix provides a brief chart outlining U.S. trade remedy statutes, major actors, and the effects of these laws.
Date: July 30, 2008
Creator: Jones, Vivian C.
Partner: UNT Libraries Government Documents Department
open access

Asylum Policies for Unaccompanied Children Compared with Expedited Removal Policies for Unauthorized Adults: In Brief

Description: This report focuses on unaccompanied alien children as asylum seekers. To bring clarity to the unique policies toward unaccompanied children, this report compares their treatment to that of unauthorized adults and families with children in the specific contexts of asylum and expedited removal.
Date: July 30, 2014
Creator: Wasem, Ruth Ellen
Partner: UNT Libraries Government Documents Department
open access

Multiyear Procurement (MYP) and Block Buy Contracting in Defense Acquisition: Background and Issues for Congress

Description: This report provides background information and issues for Congress on multiyear procurement (MYP) and block buy contracting (BBC), which are special contracting mechanisms that Congress permits the Department of Defense (DOD) to use for a limited number of defense acquisition programs. Compared to the standard or default approach of annual contracting, MYP and BBC have the potential for reducing weapon procurement costs by several percent.
Date: July 30, 2014
Creator: O'Rourke, Ronald & Schwartz, Moshe
Partner: UNT Libraries Government Documents Department
open access

Securing U.S. Diplomatic Facilities and Personnel Abroad: Legislative and Executive Branch Initiatives

Description: This report briefly summarizes and tracks congressional and State Department actions in response to the attack on U. S. facilities in Benghazi, Libya, and will be updated as necessary to reflect further developments and actions on ongoing policy proposals.
Date: July 30, 2014
Creator: Tiersky, Alex
Partner: UNT Libraries Government Documents Department
open access

Securing U.S. Diplomatic Facilities and Personnel Abroad: Background and Policy Issues

Description: This report provides background information on the organization, practice, and funding of U.S. diplomatic security efforts. It also provides summary information on the September 11, 2012, attack on U.S. facilities in Benghazi, Libya, as well as on the subsequent Accountability Review Board.
Date: July 30, 2014
Creator: Tiersky, Alex & Epstein, Susan B.
Partner: UNT Libraries Government Documents Department
open access

Nominations to Cabinet Positions During Inter-Term Transitions Since 1984

Description: This report discusses nominations to Cabinet positions during inter-term presidential transitions. It begins with a discussion of the positions that make up the Cabinet and the process by which nominations to such positions are considered in the Senate. Following this discussion, the report provides data on, and analysis of, the pace of Senate consideration of inter-term transition nominations to Cabinet positions since 1984.
Date: July 30, 2014
Creator: Carey, Maeve P.; Greene, Michael & Hogue, Henry B.
Partner: UNT Libraries Government Documents Department
open access

Tibet: Problems, Prospects, and U.S. Policy

Description: This report consists of three free-standing parts: the first discusses current issues in Tibet, including the March 2008 Chinese crackdown against demonstrations in Lhasa and elsewhere; the second briefly reviews Tibet's historical and political status with respect to China — a basic source of controversy in many Sino-Tibetan problems; and the third reviews and analyzes U.S. relations with and congressional actions toward Tibet since the 1980s, including legislative initiatives.
Date: July 30, 2008
Creator: Dumbaugh, Kerry
Partner: UNT Libraries Government Documents Department
captions transcript

[News Clip: Farah interview]

Description: B-roll video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date: July 30, 1979, 10:00 p.m.
Duration: 52 seconds
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Partner: UNT Libraries Special Collections
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