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45,994 Matching Results
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The Potential of Systems, Tools, and Techniques for Social and Community Problems: Selected References
This report provides a bibliography of resources related to the use of systems technology to solve social and community problems such as housing, pollution, transportation, and health services. Twenty areas of use are included in the bibliography.
Date:
December 11, 1969
Creator:
Chartrend, Robert L. & Ayton, Mauree W.
Object Type:
Report
System:
The UNT Digital Library
Exploration of the Planets: A History, A Prospect, and Some Issues
This report discusses the history and future of planetary exploration programs by the U.S. and the Soviet Union. Topics covered are motivations for planetary exploration, unmanned missions sent to Mars and Venus by the U.S. and Soviet Union, plans for manned missions to planets such as Mars, technical needs and costs for planetary space missions, and long-term plans and ideas.
Date:
December 15, 1969
Creator:
Devoe, Barbara M. & Sheldon, Charles S., II
Object Type:
Report
System:
The UNT Digital Library
The United States Self-Judging Reservation to the Compulsory Jurisdiction of the International Court of Justice
This report is about the United States Self-Judging reservation to the compulsory jurisdiction of the international court of justice.
Date:
December 31, 1964
Creator:
Stromberg, Ruth Hart & Zafren, Daniel Hill
Object Type:
Report
System:
The UNT Digital Library
No-Knock: Unannounced Forcible Entry Historically, In the States and in the Federal District of Columbia, Court Reform and Criminal Procedure Act of 1970, and Comprehensive Drug Abuse Prevention and Control Act f 1970
This report discusses the issue of unannounced forcible entry by police and laws regulating the practice both historically and in the D.C. Court Reform and Criminal Procedure Act of 1970 and Drug Abuse Prevention and Control Act of 1970.
Date:
December 16, 1970
Creator:
Doyle, Charles
Object Type:
Report
System:
The UNT Digital Library
Congressional Information Processes for Coordinated National Policies
This report discusses congressional information resources and their influence in allowing Congress to address national policy issues well.
Date:
December 18, 1970
Creator:
Beckman, Norman
Object Type:
Report
System:
The UNT Digital Library
The Draft: Miscellaneous Materials Related to Selective Service and Some Proposed Alternatives
This report
Date:
December 1966
Creator:
Baker, Kirby L.
Object Type:
Report
System:
The UNT Digital Library
Considerations of bunch-spacing options for multi-bunch operation of the Tevatron Collider
This discussion will consider a number of points relevant to limitations, advantages and disadvantages of various arrangements of bunches in the Tevatron proton-antiproton collider. The considerations discussed here will be limited to: (a) bunch spacing symmetry and relation to the relative luminosity at B0 and D0 and the beam-beam interaction with separated beams; (b) bunch spacing constraints imposed by Main Ring RF coalescing and the optics of beam separation at B0 and D0; and (c) bunch spacing constraints imposed by injection and abort kicker timing requirements, and by the Antiproton Source RF unstacking process. 20 figs., 17 tabs.
Date:
December 14, 1989
Creator:
Dugan, G.
Object Type:
Report
System:
The UNT Digital Library
FINAL STATES WITH THREE CHARGED PARTICLES AND A VISIBLE $lambda$ FROM K$sup -$d INTERACTIONS AT 4.5 GeV/c
None
Date:
December 31, 1972
Creator:
Ammann, A. C.; Carmony, D. D.; Garfinkel, A. F.; Gutay, L. J.; Miller, D. H. & Yen, W. L.
Object Type:
Report
System:
The UNT Digital Library
General Atomic reprocessing pilot plant: description and results of initial testing
In June 1976 General Atomic completed the construction of a reprocessing head-end cold pilot plant. In the year since then, each system within the head end has been used for experiments which have qualified the designs. This report describes the equipment in the plant and summarizes the results of the initial phase of reprocessing testing.
Date:
December 1, 1977
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Guidance manual for the input of biological information to water-intake-structure design
This manual is intended to provide guidance to the biologist who is asked to provide biological input during the construction or subsequent alteration of a water intake structure. Examples of the types of biological information that might be included in intake design are presented. Procedures for quantifying biological information and defining specific tasks that will generate quantifiable data are discussed. Procedures described apply both to new and modified water intake structures.
Date:
December 1, 1981
Creator:
Neitzel, D. A.; Simmons, M. A. & McKenzie, D. H.
Object Type:
Report
System:
The UNT Digital Library
Dedicated medical ion accelerator design study. Final report
Results and conclusions are reported from a design study for a dedicated medical accelerator. Basing efforts on the current consensus regarding medical requirements, the resulting demands on accelerator and beam delivery systems were analyzed, and existing accelerator technology was reviewed to evaluate the feasibility of meeting these demands. This general analysis was augmented and verified by preparing detailed preliminary designs for sources of therapeutic beams of neutrons, protons and heavy ions. The study indicates that circular accelerators are the most desirable and economical solutions for such sources. Synchrotrons are clearly superior for beams of helium and heavier ions, while synchrotrons and cyclotrons seem equally well suited for protons although they have different strengths and weaknesses. Advanced techniques of beam delivery are of utmost importance in fully utilizing the advantages of particle beams. Several issues are invloved here. First, multi-treatment room arrangements are essential for making optimal use of the high dose rate capabilities of ion accelerators. The design of corresponding beam switching systems, the principles of which are already developed for physics experimental areas, pose no problems. Second, isocentric beam delivery substantially enhances flexibility of dose delivery. After several designs for such devices were completed, it was concluded that high …
Date:
December 1, 1977
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Elastic properties of monoclinic hafnium oxide
The elastic properties of monoclinic hafnium oxide were studied as functions of porosity, temperature and grain size. An important finding of this study was that hafnium oxide is subject to microcracking when the grain size exceeds a critical value between 2 and 3 mu m. The behavior of the elastic moduli with porosity and temperature for crack-free hafnium oxide was typical for polycrystalline ceramics. The nature of the thermal expansion and the internal friction supported this finding. The elastic properties for the microcracked material exhibited trends similar to those observed for other microcracked materials. However, some new characteristics of the microcracking effects were observed in this study. An increase in internal friction was associated with the microcrack healing process. It was also found that there is an atmospheric effect that enhances microcrack growth. Additionally, thermal treatments of microcracked hafnium oxide were found to result in significant changes in the microcrack system.
Date:
December 1, 1977
Creator:
Dole, S.L.
Object Type:
Report
System:
The UNT Digital Library
Universal formula for the quasistatic second-order density perturbation by a cold magnetoplasma wave
Using the general expression for the ponderomotive Hamiltonian, the quasi-static quasi-neutral density change caused by the ponderomotive force of a cold magnetoplasma wave of arbitrary frequency and polarization is obtained. This formula agrees with and extends previous results for unmagnetized and magnetized plasma.
Date:
December 16, 1977
Creator:
Kaufman, A. N.; Cary, J. R. & Pereira, N. R.
Object Type:
Article
System:
The UNT Digital Library
Novel duplex vapor-electrochemical method for silicon solar cells. Quarterly progress report No. 7, August 1, 1977--October 31, 1977
Silicon obtained by the SiF/sub 4/-Na reaction was analyzed by spark source mass spectrometry (SSMS). A partial listing of the results is given below. The concentration units in parentheses are ppM wt. B(0.1), Al(0.8), Ga(0.06), P(0.2), F(0.1), Na(1.0), V(0.04), Mo(0.3), Ti(2.0), Zr(2.0), Mn(0.1), Ni(2.0), Zn(0.01), Cu(20.0), Cr(11.0), Fe(55.0). An excellent starting material for silicon solar cells is obtained on the basis of the low levels of B, Al, Ga, P and As. The source of the Fe and Cr is suspected to be the stainless steel container for liquid sodium. An independent check for the phosphorus content in Sample 2-19 was made by a wet colorimetric method and was found to be 90 parts per billion (ppB), in reasonable agreement with the SSMS result of 20 ppB. Silicon samples prepared from induction melted powder were evaluated for electrical properties using four-point probe conductivity and thermoelectric methods. The solid silicon in Sample 2-19 was found to be p-type and ranged in resistivity between 0.1 and 0.5 ohm cm. A stainless steel reactor was designed and fabricated to perform the SiF/sub 4/-Na reaction under P/sub SiF/sub 4// greater than 1 atmosphere. The amount of silicon produced was increased from 25 g per …
Date:
December 1, 1977
Creator:
Kapur, V.K.; Nanis, L. & Sanjurjo, A.
Object Type:
Report
System:
The UNT Digital Library
International conference on bone mineral measurement, October 12--13, 1973, Chicago, Illinois
From international conference on bone mineral measurement; Chicago, Illinois, USA (12 Oct 1973). Abstracts of papers presented at the international conference on bone mineral measurement are presented. The papers were grouped into two sessions: a physical session including papers on measuring techniques, errors, interpretation and correlations, dual photon techniques, and data handling and exchange; a biomedical session including papers on bone disease, osteoporosis, normative data, non-disease influences, renal, and activity and inactivity. (ERB)
Date:
December 31, 1973
Creator:
unknown
Object Type:
Article
System:
The UNT Digital Library
Thermal performance measurements on ultimate heat sinks--cooling ponds
The primary objective of the studies described is to obtain the requisite data, with respect to modeling requirements, to characterize thermal performance of heat sinks for nuclear facilities existing at elevated water temperatures in result of experiencing a genuinely large heat load and responding to meteorological influence. The data should reflect thermal performance for combinations leading to worst-case meteorological influence. A geothermal water retention basin has been chosen as the site for the first measurement program and data have been obtained in the first of several experiments scheduled to be performed there. These data illustrate the thermal and water budgets during episodes of cooling from an initially high pond water bulk temperature. Monitoring proceeded while the pond experienced only meteorological and seepage influence. The data are discussed and are presented as a data volume which may be used for calculation purposes. Suggestions for future measurement programs are stated with the intent to maintain and improve relevance to nuclear ultimate heat sinks while continuing to examine the performance of the analog geothermal pond. It is further suggested that the geothermal pond, with some modification, may be a suitable site for spray pond measurements.
Date:
December 1, 1977
Creator:
Hadlock, R.K. & Abbey, O.B.
Object Type:
Report
System:
The UNT Digital Library
Tracking with wire chambers at high luminosities
Radiation damage and rate limitations impose severe constraints on wire chambers at the SSC. Possible conceptual designs for wire chamber tracking systems that satisfy these constraints are discussed. Computer simulation studies of tracking in such systems are presented. Simulations of events from interesting physics at the SSC, including hits from minimum bias background events, are examined. Results of some preliminary pattern recognition studies are given. 11 refs., 10 figs.
Date:
December 1, 1989
Creator:
Hanson, G. G.
Object Type:
Article
System:
The UNT Digital Library
Bose-Einstein correlations in e/sup +/e/sup -/ collisions
The MARK II detector is used to study the Bose-Einstein correlation between pairs and triplets of charged pions produced in hadronic decays of the J)psi), the ..sqrt..s = 4 to 7 GeV continuum above the J)psi), two photon events at ..sqrt..s = 29 GeV, and e/sup )plus/)e/sup )minus/) annihilation events at ..sqrt..s = 29 GeV as a function of Q/sup 2/, the four-momentum transfer squared. After corrections for Coulomb effects and pion misidentification, we find a nearly full Bose-Einstein enhancement ..cap alpha.. in the J)psi) and the two photon data and about half the maximum value in the other two data sets. The radius parameter )tau)(an average over space and time) given by pion pair analyses lies within a band of +-0.10 fm around 0.73 fm and is the same, within errors, for all four data sets. Pion triplet analyses also give a consistent radius of approx. 0.54 fm. fits to two-dimensional distributions R(q/sub T//sup 2/, q/sub C//sup 2/) of invariant components of Q/sup 2/ = q/sub T//sup 2/ )plus) q/sub C//sup 2/ give )tau)/sub T/ approx. )tau)C approx. )tau), where q/sub T/ is the transverse three-momentum difference calculated with respect to the net pair three-momentum, and q/sub C/ is …
Date:
December 1, 1987
Creator:
Juricic, I.
Object Type:
Report
System:
The UNT Digital Library
HTGR fuel recycle program. Quarterly progress report for the period ending November 30, 1977
The work reported includes the development of unit processes and equipment for reprocessing of High-Temperature Gas-Cooled Reactor (HTGR) fuel, the design and development of an integrated pilot line to demonstrate the head end of HTGR reprocessing using unirradiated fuel materials, and design work in support of Hot Engineering Tests (HET). Work is also described on trade-off studies concerning the required design of facilities and equipment for the large-scale recycle of HTGR fuels in order to guide the development activities for HTGR fuel recycle.
Date:
December 1, 1977
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Procedures and instructions for fabrication, assembly, and test of PCP III multisection ionization chamber (Q-2633) for reactor control
This document is a collection of procedures for fabrication, assembly, and testing of a PCP III multisection ionization chamber (Q-2633) for reactor control.
Date:
December 1, 1977
Creator:
Chiles, M. M.; Clay, W. T. & Fowler, C. E.
Object Type:
Report
System:
The UNT Digital Library
Rockwell Hanford Operations' 1978 radiological improvement program
This document describes the radiological improvement program (RIP) to be undertaken by Rockwell Hanford Operations during calendar year 1978. Actions taken in each facility to reduce exposure and to implement the Company's policy to conduct operations in a manner that assures radiation exposures to employees are maintained at the lowest levels reasonably achievable.
Date:
December 30, 1977
Creator:
Cunningham, D. S.
Object Type:
Report
System:
The UNT Digital Library
Ion cyclotron radio frequency systems and performance on the tandem mirror experiment-upgrade (TMX-U)
High power ion cyclotron radio frequency (ICRF) systems are now gaining greater attention than before as prime driver ion heating systems. Lawrence Livermore National Laboratory (LLNL) has installed a 200 kW high frequency (HF) transmitter system on its Tandem Mirror Experiment-Upgrade (TMX-U). This paper describes the system, antenna, controls, and monitoring apparatus. The transmitter operates into a high Q antenna installed in the central cell region of the experiment. It incorporates a dual-port feedback system to automatically adjust the transmitter's output power and allow the maximum consistent with the plasma loading of the antenna. Special techniques have been used to measure, in real-time, the dynamically changing loading values presented by the plasma. From the measurements, the antenna impedance can be optimized for specified plasma density.
Date:
December 1, 1983
Creator:
Moore, T. L.; Molvik, A. W.; Cummins, W. F.; Pedrotti, L. R.; Henderson, A. L.; Karsner, P. G. et al.
Object Type:
Article
System:
The UNT Digital Library
Evaluating late detection capability against diverse insider adversaries
This paper describes a model for evaluating the late (after-the-fact) detection capability of material control and accountability (MCandA) systems against insider theft or diversion of special nuclear material. Potential insider cover-up strategies to defeat activities providing detection (e.g., inventories) are addressed by the model in a tractable manner. For each potential adversary and detection activity, two probabilities are assessed and used to fit the model. The model then computes the probability of detection for activities occurring periodically over time. The model provides insight into MCandA effectiveness and helps identify areas for safeguards improvement. 4 refs., 4 tabs.
Date:
December 3, 1987
Creator:
Sicherman, A.
Object Type:
Article
System:
The UNT Digital Library
Heavy ion drivers for inertial confinement fusion
The advantages of heavy ion beams as a way of delivering the needed energy and power to an inertial fusion target are surveyed. The existing broad technology base of particle accelerators provides an important foundation for designing, costing, and evaluating proposed systems. The sequence of steps needed for the verification of the heavy ion approach is described; recent research results are even more encouraging than had been assumed hitherto.
Date:
December 1, 1983
Creator:
Keefe, D.
Object Type:
Article
System:
The UNT Digital Library