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open access

VA and Defense Health Care: Progress and Challenges DOD Faces in Executing a Military Medical Surveillance System

Description: A statement of record issued by the General Accounting Office with an abstract that begins "The Departments of Defense (DOD) and Veterans Affairs (VA) are establishing a medical surveillance system for the health care needs of military personnel and veterans. The system will collect and analyze information on deployments, environmental health threats, disease monitoring, medical assessments, and medical encounters. GAO has identified weaknesses in DOD's medical surveillance capability and perfo… more
Date: October 16, 2001
Creator: United States. General Accounting Office.
Item Type: Refine your search to only Text
Partner: UNT Libraries Government Documents Department
open access

Telecommunications: Characteristics and Competitiveness of the Internet Backbone Market

Description: A letter report issued by the General Accounting Office with an abstract that begins "Although most Americans are familiar with Internet service providers that give consumers a pathway, or "on-ramp," to the Internet, few are familiar with Internet backbone providers and backbone networks. At the Internet's core are many high-capacity, long-haul "backbone" networks that route data traffic over long distances using high-speed fiber lines. Internet backbone providers compete in the marketplace and… more
Date: October 16, 2001
Creator: United States. General Accounting Office.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Micromechanics of Transformation Superplasticity in Ti-6Al-4V/TiBw Composites

Description: Transformation superplasticity is a deformation mechanism induced by thermally-cycling a polymorphic material through the phase transformation range while simultaneously applying an external biasing stress. Unlike microstructural superplasticity, which requires a fine, equiaxed grain structure, this mechanism can be applied to coarse-grained alloys and composites. In this article, we review our research on transformation superplasticity of Ti-6Al-4V/TiB-whisker reinforced composites, during the… more
Date: October 16, 2001
Creator: Schuh, C & Dunand, D C
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Data Qualification Report For: Thermodynamic Data File, DATA0.YMP.R0 For Geochemical Code, EQ3/6

Description: The objective of this work is to evaluate the adequacy of chemical thermodynamic data provided by Lawrence Livermore National Laboratory (LLNL) as DataO.ymp.ROA in response to an input request submitted under AP-3.14Q. This request specified that chemical thermodynamic data available in the file, Data0.com.R2, be updated, improved, and augmented for use in geochemical modeling used in Process Model Reports (PMRs) for Engineered Barrier Systems, Waste Form, Waste Package, Unsaturated Zone, and N… more
Date: October 16, 2001
Creator: Cloke, P.L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Mixed metal films with switchable optical properties

Description: Thin, Pd-capped metallic films containing magnesium and first row transition metals (Mn, Fe, Co) switch reversibly from their initial reflecting state to visually transparent states when exposed to gaseous hydrogen or following cathodic polarization in an alkaline electrolyte. Reversion to the reflecting state is achieved by exposure to air or by anodic polarization. The films were prepared by co-sputtering from one magnesium target and one manganese, iron, or cobalt target. Both the dynamic op… more
Date: October 16, 2001
Creator: Richardson, Thomas J.; Slack, Jonathan L.; Farangis, Baker & Rubin, Michael D.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

A decision support system for adaptive real-time management ofseasonal wetlands in California

Description: This paper describes the development of a comprehensive flow and salinity monitoring system and application of a decision support system (DSS) to improve management of seasonal wetlands in the San Joaquin Valley of California. The Environmental Protection Agency regulates salinity discharges from non-point sources to the San Joaquin River using a procedure known as the Total Maximum Daily Load (TMDL) to allocate the assimilative capacity of the River for salt among watershed sources. Management… more
Date: October 16, 2001
Creator: Quinn, Nigel W.T. & Hanna, W. Mark
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Beam Diagnostics Systems for the National Ignition Facility

Description: The National Ignition Facility (NIF) laser focuses 1.8 megajoules of ultraviolet light (wavelength 351 nanometers) from 192 beams into a 600-micrometer-diameter volume. Effective use of this output in target experiments requires that the power output from all of the beams match within 8% over their entire 20-nanosecond waveform. The scope of NIF beam diagnostics systems necessary to accomplish this task is unprecedented for laser facilities. Each beamline contains 110 major optical components d… more
Date: October 16, 2001
Creator: Demaret, R D; Boyd, R D; Bliss, E S; Gates, A J & Severyn, J R
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Efficient Error Calculation for Multiresolution Texture-Based Volume Visualization

Description: Multiresolution texture-based volume visualization is an excellent technique to enable interactive rendering of massive data sets. Interactive manipulation of a transfer function is necessary for proper exploration of a data set. However, multiresolution techniques require assessing the accuracy of the resulting images, and re-computing the error after each change in a transfer function is very expensive. They extend their existing multiresolution volume visualization method by introducing a me… more
Date: October 16, 2001
Creator: LaMar, E.; Hamann, B. & Joy, K. I.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Large-Scale CORBA-Distributed Software Framework for NIF Controls

Description: The Integrated Computer Control System (ICCS) is based on a scalable software framework that is distributed over some 325 computers throughout the NIF facility. The framework provides templates and services at multiple levels of abstraction for the construction of software applications that communicate via CORBA (Common Object Request Broker Architecture). Various forms of object-oriented software design patterns are implemented as templates to be extended by application software. Developers ex… more
Date: October 16, 2001
Creator: Carey, R W; Fong, K W; Sanchez, R J; Tappero, J D & Woodruff, J P
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Hot Topics in Ultra-Peripheral Ion Collisions

Description: Ultra-peripheral collisions of relativistic heavy ions involve long-ranged electromagnetic interactions at impact parameters too large for hadronic interactions to occur. The nuclear charges are large; with the coherent enhancement, the cross sections are also large. Many types of photonuclear and purely electromagnetic interactions are possible. We present here an introduction to ultra-peripheral collisions, and present four of the most compelling physics topics.
Date: October 16, 2001
Creator: Baur, G.; Bertulani, C. A.; Chiu, M.; Ginzburg, I. F.; Hencken, K.; Klein, S. R. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Stiff Temperature Profiles in JT-60U ELMy H-mode Plasmas

Description: The 'stiffness' of thermal transport in ELMy H-modes [edge localized high-confinement modes] is examined in a series of carefully chosen JT-60U plasmas, and measured temperatures are compared with the predictions of several transport models. A heating power scan with constant T(subscript ''ped''), a scan of pedestal temperature, T(subscript ''ped''), with constant heating power, and an on-axis/off-axis heating comparison are presented. In the power scan a 45% increase in heating (and a 12% dens… more
Date: October 16, 2001
Creator: Mikkelsen, D.R.; Urano, H.; Shirai, H.; Takizuka, T.; Kamada, Y.; Hatae, T. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

The Alpha Dynamo Effects in Laboratory Plasmas

Description: A concise review of observations of the alpha dynamo effect in laboratory plasmas is given. Unlike many astrophysical systems, the laboratory pinch plasmas are driven magnetically. When the system is overdriven, the resultant instabilities cause magnetic and flow fields to fluctuate, and their correlation induces electromotive forces along the mean magnetic field. This alpha-effect drives mean parallel electric current, which, in turn, modifies the initial background mean magnetic structure tow… more
Date: October 16, 2001
Creator: Ji, Hantao & Prager, Stewart C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

CDF results on diffraction from Run I and plans for Run II

Description: Results on soft and hard diffraction obtained by the CDF Collaboration in Run I of the Fermilab Tevatron {bar p}p collider are reviewed and compared with results from the DESY ep collider HERA and with theoretical expectations. In addition, the CDF program for diffractive studies in Run II is briefly reviewed with emphasis on the relevant detector upgrades and physics goals.
Date: October 16, 2001
Creator: Goulianos, K.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

SiC-BASED HYDROGEN SELECTIVE MEMBRANES FOR WATER-GAS-SHIFT REACTION

Description: This technical report summarizes our activities conducted in Yr II. In Yr I we successfully demonstrated the feasibility of preparing the hydrogen selective SiC membrane with a chemical vapor deposition (CVD) technique. In addition, a SiC macroporous membrane was fabricated as a substrate candidate for the proposed SiC membrane. In Yr II we have focused on the development of a microporous SiC membrane as an intermediate layer between the substrate and the final membrane layer prepared from CVD.… more
Date: October 16, 2001
Creator: Liu, Paul K.T.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Parametric Investigations of Miniaturized Cylindrical and Annular Hall Thrusters

Description: A cylindrical geometry Hall thruster may overcome certain physical and technological limitations in scaling down of Hall thrusters to miniature sizes. The absence of the inner wall and use of the cusp magnetic field can potentially reduce heating of the thruster parts and erosion of the channel. A 2.6 cm miniaturized Hall thruster of a flexible design was built and successfully operated in the power range of 50-300 W. Comparison of preliminary results obtained for cylindrical and annular thrust… more
Date: October 16, 2001
Creator: Smirnov, A.; Raitses, Y. & Fisch, N. J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Measurements of Plasma Potential Distribution in Segmented Electrode Hall Thruster

Description: Use of a segmented electrode placed at the Hall thruster exit can substantially reduce the voltage potential drop in the fringing magnetic field outside the thruster channel. In this paper, we investigate the dependence of this effect on thruster operating conditions and segmented electrode configuration. A fast movable emissive probe is used to measure plasma potential in a 1 kW laboratory Hall thruster with semented electrodes made of a graphite material. Relatively small probe-induced pertur… more
Date: October 16, 2001
Creator: Raitses, Y.; Staack, D. & Fisch, N. J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
captions transcript

[News Clip: War latest]

Description: Video footage from the KXAS-TV/NBC 5 television station in Fort Worth, Texas, covering a news story.
Date: October 16, 2001, 5:00 p.m.
Duration: 2 minutes 01 second
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Item Type: Refine your search to only Video
Partner: UNT Libraries Special Collections
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