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[Letter from Bill McCarter and Jack Davis to Vicki Rosenberg, June 30, 1993]
Photocopy of a letter from Bill McCarter and Jack Davis, co-directors of NTIEVA, to Vicki Rosenberg, program officer for the Getty Center, in regards to addressing some over-due responses needed by the Center. McCarter and Davis write that they support the Californian and Regional Institutes doing a super-session at the Baltimore conference, but the presentations need to be more balanced between what works and what doesn't. They also like the idea of each institute doing a follow up session, identifying three or four topics in the areas where they have been successful.
Date:
June 30, 1993
Creator:
Davis, Donald Jack
Object Type:
Letter
System:
The UNT Digital Library
Motion-Dependent Fluid Forces Acting on Tube Arrays in Crossflow
Motion-dependent fluids forces acting on a tube array were measured as a function of excitation frequency, excitation amplitude, and flow velocity. Fluid-damping and fluid-stiffness coefficients were obtained from measured motion-dependent fluid forces as a function of reduced flow velocity and excitation amplitude. The water channel and test setup provide a sound facility for obtaining key coefficients for fluid-elastic instability of tube arrays in crossflow. Once the guideline, based on the unsteady flow theory, can be developed for fluid-elastic instability of tube arrays crossflow.
Date:
June 1993
Creator:
Chen, Shoei-Sheng; Zhu, S. & Jendrzejczyk, J. A.
Object Type:
Report
System:
The UNT Digital Library
Experiment on Fluidelastic Instability of Loosely Supported Tube Arrays in Crossflow
A tube array supported by baffle plates in crossflow may be subjected to fluid-elastic instability in the tube-support-plate-inactive mode. An experimental study is presented to characterize the tube motion. Three series of tests were performed to measure tube displacements as a function of flow velocity for different clearances. The motion was examined by root-mean-square values of tube displacements, power spectral densities, phase planes, Poincare maps, and Lyapunov exponents. The experimental data agree reasonably well with the analytical model, based on the unsteady flow theory.
Date:
June 1993
Creator:
Chen, Shoei-Sheng; Zhu, S. & Cai, Y.
Object Type:
Report
System:
The UNT Digital Library
Users manual for the Chameleon Parallel Programming Tools
Message passing is a common method for writing programs for distributed-memory parallel computers. Unfortunately, the lack of a standard for message passing has hampered the construction of portable and efficient parallel programs. In an attempt to remedy this problem, a number of groups have developed their own message-passing systems, each with its own strengths and weaknesses. Chameleon is a second-generation system of this type. Rather than replacing these existing systems, Chameleon is meant to supplement them by providing a uniform way to access many of these systems. Chameleon`s goals are to (a) be very lightweight (low over-head), (b) be highly portable, and (c) help standardize program startup and the use of emerging message-passing operations such as collective operations on subsets of processors. Chameleon also provides a way to port programs written using PICL or Intel NX message passing to other systems, including collections of workstations. Chameleon is tracking the Message-Passing Interface (MPI) draft standard and will provide both an MPI implementation and an MPI transport layer. Chameleon provides support for heterogeneous computing by using p4 and PVM. Chameleon`s support for homogeneous computing includes the portable libraries p4, PICL, and PVM and vendor-specific implementation for Intel NX, IBM EUI (SP-1), and …
Date:
June 1993
Creator:
Gropp, William & Smith, Barry
Object Type:
Report
System:
The UNT Digital Library
Preliminary Plan for Treating Mixed Waste
A preliminary waste treatment plan was developed for disposing of radioactive inorganic liquid wastes that contain hazardous metals and/or hazardous acid concentrations at Argonne National Laboratory. This plan, which involves neutralization and sulfide precipitation followed by filtration, reduces the concentration of hazardous metals and the acidity so that the filtrate liquid is simply a low-level radioactive waste that can be fed to a low-level waste evaporator.
Date:
June 1993
Creator:
Vandegrift, G. F.; Conner, C.; Hutter, Joseph C.; Leonard, R. A.; Nuñez, Luis; Sedlet, J. et al.
Object Type:
Report
System:
The UNT Digital Library
Health Insurance: The Hawaii Experience
This paper provides a detailed look at the State that is often considered a model for what States can do to help provide universal or near universal health insurance coverage for their residents. The paper discusses the history of health insurance provision in Hawaii, emphasizing two relatively recent State insurance laws: 1) the 1974 law that required employers to offer coverage to most of their employees, and 2) the 1989 law that provided a State subsidy for coverage of those individuals who fell in the gap between employment-based coverage and Medicaid coverage. The paper addresses the difficulties faced in evaluating the impact of Hawaii’s various attempts to provide coverage and access, and speaks to whether all or parts of Hawaii’s experience can be transferred to other States or to the Nation as a whole.
Date:
June 1993
Creator:
United States. Congress. Office of Technology Assessment.
Object Type:
Report
System:
The UNT Digital Library
Who Goes There: Friend or Foe?
This report discusses the problem of fratricide, or “friendly fire” casualties among combat units. The House Armed Services Committee requested that OTA assess the technology and techniques available to reduce this tragic loss of life.
Date:
June 1993
Creator:
United States. Congress. Office of Technology Assessment.
Object Type:
Report
System:
The UNT Digital Library
Advanced Network Technology
This background paper analyzes technologies for tomorrow’s information superhighways. Advanced networks will first be used to support scientists in their work, linking researchers to supercomputers, databases, and scientific instruments. The paper also describes six test networks that are being funded as part of the High Performance Computing and Communications Program.
Date:
June 1993
Creator:
United States. Congress. Office of Technology Assessment.
Object Type:
Report
System:
The UNT Digital Library
An Inconsistent Picture: A Compilation of Analyses of Economic Impacts of Competing Approaches to Health Care Reform by Experts and Stakeholders
This report reviews numerous analyses of the economic impacts of the major approaches to health care reform addressed in this Report-Single Payer, Play-or-Pay, Individual Vouchers or Tax Credits, and Managed Competition and identifies some of the key issues and significant assumptions behind the estimates provided in these analyses.
Date:
June 1993
Creator:
United States. Congress. Office of Technology Assessment.
Object Type:
Report
System:
The UNT Digital Library
The Tulia Herald (Tulia, Tex.), Vol. 85, No. 23, Ed. 1 Thursday, June 10, 1993
Weekly newspaper from Tulia, Texas that includes local, state and national news along with extensive advertising.
Date:
June 10, 1993
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
The Tulia Herald (Tulia, Tex.), Vol. 85, No. 25, Ed. 1 Thursday, June 24, 1993
Weekly newspaper from Tulia, Texas that includes local, state and national news along with extensive advertising.
Date:
June 24, 1993
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
The Tulia Herald (Tulia, Tex.), Vol. 85, No. 22, Ed. 1 Thursday, June 3, 1993
Weekly newspaper from Tulia, Texas that includes local, state and national news along with extensive advertising.
Date:
June 3, 1993
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
The Tulia Herald (Tulia, Tex.), Vol. 85, No. 24, Ed. 1 Thursday, June 17, 1993
Weekly newspaper from Tulia, Texas that includes local, state and national news along with extensive advertising.
Date:
June 17, 1993
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
The 73rd Texas Legislature, Summary of Significant Legislation
This document is comprised of five sections; an overview of major issues; a list of all enrolled bill; sunset legislation; constitutional amendments; and gubernatorial vetoes. The section listing enrolled bills has been expanded this year to include the author/sponsors, relating clauses, and effective dates of the bills." (Foreword).
Date:
June 1993
Creator:
Texas. Legislature. Senate. Research Center.
Object Type:
Report
System:
The Portal to Texas History
Pilot study risk assessment for selected problems at the Nevada Test Site (NTS)
The Nevada Test Site (NTS) is located in southwestern Nevada, about 105 km (65 mi) northwest of the city of Las Vegas. A series of tests was conducted in the late 1950s and early 1960s at or near the NTS to study issues involving plutonium-bearing devices. These tests resulted in the dispersal of about 5 TBq of [sup 239,24O]Pu on the surficial soils at the test locations. Additionally, underground tests of nuclear weapons devices have been conducted at the NTS since late 1962; ground water beneath the NTS has been contaminated with radionuclides produced by these tests. These two important problems have been selected for assessment. Regarding the plutonium contamination, because the residual [sup 239]Pu decays slowly (half-life of 24,110 y), these sites could represent a long-term hazard if they are not remediated and if institutional controls are lost. To investigate the magnitude of the potential health risks for this no-remediation case, three basic exposure scenarios were defined that could bring individuals in contact with [sup 239,24O]Pu at the sites: (1) a resident living in a subdivision, (2) a resident farmer, and (3) a worker at a commercial facility -- all located at a test site. The predicted cancer risks …
Date:
June 1, 1993
Creator:
Daniels, J.I. (ed.)
Object Type:
Report
System:
The UNT Digital Library
Determination of the energy of suprathermal electrons during lower hybrid current drive on PBX-M
Suprathermal electrons are diagnosed by a hard x-ray pinhole camera during lower hybrid current drive on PBX-M. The experimental hard x-ray images are compared with simulated images, which result from an integration of the relativistic bremsstrahlung along lines-of-sight through the bean-shaped plasma. Images with centrally peaked and radially hollow radiation profiles are easily distinguished. The energy distribution of the suprathermal electrons is analyzed by comparing images taken with different absorber foils. An effective photon temperature is derived from the experimental images, and a comparison with simulated photon temperatures yields the energy of the suprathermal electrons. The analysis indicates that the energy of the suprathermal electrons in the hollow discharges is in the 50 to 100 key range in the center of the discharge. There seems to exist a very small higher energy component close to the plasma edge.
Date:
June 1, 1993
Creator:
Von Goeler, S.; Bernabei, S.; Davis, W.; Ignat, D.; Kaita, R.; Roney, P. et al.
Object Type:
Article
System:
The UNT Digital Library
Recovery and purification of nickel-63 from HFIR-irradiated targets
The production of large quantities of high-specific-activity [sup 63]Ni (>10 Ci/g) requires both a highly enriched [sup 62]Ni target and a long irradiation period at high neutron flux. Trace impurities in the nickel and associated target materials are also activated and account for a significant fraction of the discharged activity and essentially all of the gamma activity. While most of these undesirable activation products can be removed as chloride complexes during anion exchange, chromium, present at [sup 51]Cr, and scandium, present as [sup 46]Sc, are exceptions and require additional processing to achieve the desired purity. Optimized flowsheets are discussed based upon the current development and production experience.
Date:
June 1, 1993
Creator:
Williams, D. F.; O'Kelley, G. D.; Knauer, J. B.; Porter, C. E. & Wiggins, J. T.
Object Type:
Report
System:
The UNT Digital Library
Digital control systems in nuclear power plants: Failure information, modeling concepts, and applications
This report briefly describes some current applications of advanced computerized digital display and control systems at US commercial nuclear power plants and presents the results of a literature search that was made to gather information on the reliability of these systems. Both hardware and software reliability were addressed in this review. Only limited failure rate information was found, with the chemical process industry being the primary source of information on hardware failure rates and expert opinion the primary source for software failure rates. Safety-grade digital control systems are typically installed on a functional like-for-like basis, replacing older analog systems without substantially changing interactions with other plant systems. Future work includes performing a limited probabilistic risk assessment of a representative DCS to assess its risk significance.
Date:
June 23, 1993
Creator:
Galyean, W.J.
Object Type:
Report
System:
The UNT Digital Library
Pacific Northwest Laboratory Annual Report for 1992 to the DOE Office of Energy Research
This report summarizes progress in OHER biological research and general life sciences research programs conducted at PNL in FY 1992. The research develops the knowledge and fundamental principles necessary to identify, understand, and anticipate the long-term health consequences of energy-related radiation and chemicals. Our continuing emphasis is to decrease the uncertainty of health risk estimates from energy-related technologies through an increase understanding of the ways in which radiation and chemicals cause biological damage. Descriptors of individual research projects as detailed in this report one separately abstracted and indexed for the database.
Date:
June 1, 1993
Creator:
Kreml, S. A. (ed.) & Park, J. F.
Object Type:
Report
System:
The UNT Digital Library
Computation and graphics in mathematical research
Current research is described on: grain boundaries and dislocations in compound polymers, boundary value problems for hypersurfaces constant Gaussian curvature, and discrete computational geometry. 19 refs, 4 figs.
Date:
June 1, 1993
Creator:
Hoffman, D.A. & Spruck, J.
Object Type:
Report
System:
The UNT Digital Library
The European nuclear power industry: Restructuring for combined strength and worldwide leadership
The European nuclear power industry is being restructured from an industry drawn along national lines to a European-wide industry. This, in part, reflects growth of the European Economic Community, but it also reflects changes in the international nuclear power industry. The objectives of the participants, beyond better integration of the nuclear industry in Western Europe, are to (1) obtain European leadership of the worldwide commercial nuclear power industry, (2) improve medium- and long-term safety of Eastern Europe and the former Soviet Union (FSU) power reactors, and (3) reduce domestic concerns about nuclear power. The activities to achieve these goals include (1) formation of Nuclear Power International (a joint venture of the German and French nuclear power plant vendors for design and construction of nuclear power plants), (2) formation of a utility group to forge agreement throughout Europe on what the requirements are for the next generation of nuclear power plants, and (3) agreement by regulators in multiple European countries to harmonize regulations. This is to be achieved before the end of the decade. These changes would allow a single design of nuclear power plant to be built anywhere in Europe. The creation of European-wide rules (utility requirements, engineering standards, and …
Date:
June 18, 1993
Creator:
Forsberg, C.W.; Norman, R.E.; Reich, W.J. & Hill, L.J.
Object Type:
Report
System:
The UNT Digital Library
Conical geometry for sagittal focusing as applied to X rays from synchrotrons
The authors describe a method for simultaneously focusing and monochromatization of X rays from a fan of radiation having up to 15 mrad divergence in one dimension. This geometry is well suited to synchrotron radiation sources at magnifications of one-fifth to two and is efficient for X-ray energies between 3 and 40 keV (0.48 and 6.4 fJ). The method uses crystals bent to part of a cone for sagittal focusing and allows for the collection of a larger divergence with less mixing of the horizontal into the vertical divergence than is possible with X-ray mirrors. They describe the geometry required to achieve the highest efficiency when a conical crystal follows a flat crystal in a nondispersive two-crystal monochromator. At a magnification of one-third, the geometry is identical to a cylindrical focusing design described previously. A simple theoretical calculation is shown to agree well with ray-tracing results. Minimum aberrations are observed at magnifications near one. Applications of the conical focusing geometry to existing and future synchrotron radiation facilities are discussed.
Date:
June 1, 1993
Creator:
Ice, G. E. & Sparks, C. J.
Object Type:
Report
System:
The UNT Digital Library
Dynamic impact and pressure analysis of the insensitive munitions container PA103 with modified design features
This report presents analytical analyses of the insensitive munitions container PA103, with modified design features for a static internal pressure of 500 psi and for a dynamic impact resulting from a 7-ft free fall onto a rigid surface. The modified design features addressed by the analyses were the inclusion of a score pattern on the container cylindrical body and a plastic plate (fuse) sandwiched between metal flanges on the container end. The objectives of both the pressure and impact analyses were to determine if the induced stresses at the score patterns in the cylindrical body of the container were sufficient to induce failure. Analytical responses of the container to the imposed loads were obtained with finite element analysis methodology. The computer codes ABAQUS and VEC/DYNA3D were used to obtain the results. Results of the pressure analysis indicate that failure of the container body would be expected to occur at the score pattern for a static internal pressure of 500 psi. Also, results from three impact orientations for a 7-ft drop indicate that membrane stresses in the vicinity of the score pattern are above critical crack growth stress magnitudes, especially at low ([minus]60[degrees]F) temperatures.
Date:
June 1, 1993
Creator:
Handy, K.D.
Object Type:
Report
System:
The UNT Digital Library
Bogata News (Bogata, Tex.), Vol. 83, No. 7, Ed. 1 Thursday, June 3, 1993
Weekly newspaper from Bogata, Texas that includes local, state, and national news along with advertising.
Date:
June 3, 1993
Creator:
Nichols, Nanalee & Nichols, Thomas
Object Type:
Newspaper
System:
The Portal to Texas History