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Homelessness: HUD Funds Eligible Projects According to Communities' Priorities

Description: A letter report issued by the General Accounting Office with an abstract that begins "Pursuant to a congressional request, GAO reviewed the Department of Housing and Urban Development's (HUD) funding of Stewart B. McKinney Homeless Assistance Act projects, focusing on: (1) what process HUD uses to select projects for funding, whether this process is consistent with relevant statutes, and how HUD treats new projects and projects that have been funded in the past (renewal projects); (2) the exten… more
Date: July 24, 2000
Creator: United States. General Accounting Office.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

U.S. Attorneys: Laws, Rules, and Policies Governing Political Activities

Description: A letter report issued by the General Accounting Office with an abstract that begins "Pursuant to a congressional request, GAO discussed various laws, rules, and policies related to the political activities of U.S. Attorneys, focusing on: (1) what laws and Department of Justice (DOJ) rules and policies govern U.S. Attorneys' involvement in Hatch Act partisan political activities; (2) what types of activities are permitted and what types are prohibited; (3) to what extent have U.S. Attorneys bee… more
Date: July 24, 2000
Creator: United States. General Accounting Office.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Army Corps of Engineers: An Assessment of the Draft Environmental Impact Statement of the Lower Snake River Dams

Description: A letter report issued by the General Accounting Office with an abstract that begins "Pursuant to a congressional request, GAO reviewed the Army Corps of Engineers' environmental impact statement (EIS) of the Lower Snake River dams, focusing on: (1) extent to which the Corps followed applicable procedures and guidelines in preparing the draft EIS; and (2) reasonableness of the methodology the Corps used to analyze and present the effects of breaching the dams, specifically with respect to elect… more
Date: July 24, 2000
Creator: United States. General Accounting Office.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Simultaneous Production of High-Purity Hydrogen and Sequestration-Ready CO2 from Syngas: Computer Model Development

Description: Two computer modules are being constructed to model a new process for syngas upgrading and purification. The first module simulates the physical processes occurring in a fluid bed reactor where both gas and solid compositions and flow rates vary significantly along the axis of the reactor. The second module simulates the chemistry and mass transfer between the gas and solid phases. Primitive forms of the two modules have been developed and exercised over a range of performance parameters. These… more
Date: July 24, 2000
Creator: Cole, Jerald A.; Hernandez, Arnold D.; Kumar, Ravi V. & Wildmer, Neil C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

The Russian Federation's Ministry of Atomic Energy: Programs and Developments

Description: The Ministry of Atomic Energy of the Russian Federation (Minatom) is one of Russia's largest and most influential federal bodies. Throughout 1999 its head, Yevgeny Adamov, has worked to increase the Ministry's commercial competitiveness by consolidating redundant facilities and tightening control over subsidiary organizations. Economic difficulties and budget constraints, however, have hindered Minatom's ability to achieve many of its programs and goals. As a result, the Ministry has continued,… more
Date: July 24, 2000
Creator: Johnson, Craig M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Modeling Collapse Chimney and Spall Zone Settlement as a Source of Post-Shot Subsidence Detected by Synthetic Aperture Radar Interferometry

Description: Ground surface subsidence resulting from the March 1992 JUNCTION underground nuclear test at the Nevada Test Site (NTS) imaged by satellite synthetic aperture radar interferometry (InSAR) wholly occurred during a period of several months after the shot (Vincent et al., 1999) and after the main cavity collapse event. A significant portion of the subsidence associated with the small (less than 20 kt) GALENA and DIVIDER tests probably also occurred after the shots, although the deformation detecte… more
Date: July 24, 2000
Creator: Foxwall, W.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Elliptic Solvers with Adaptive Mesh Refinement on Complex Geometries

Description: Adaptive Mesh Refinement (AMR) is a numerical technique for locally tailoring the resolution computational grids. Multilevel algorithms for solving elliptic problems on adaptive grids include the Fast Adaptive Composite grid method (FAC) and its parallel variants (AFAC and AFACx). Theory that confirms the independence of the convergence rates of FAC and AFAC on the number of refinement levels exists under certain ellipticity and approximation property conditions. Similar theory needs to be deve… more
Date: July 24, 2000
Creator: Phillip, B.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Angular Sensitivity of Gated Micro-Channel Plate Framing Cameras

Description: Gated, microchannel-plate-based (MCP) framing cameras have been deployed worldwide for 0.2 - 9 keV x-ray imaging and spectroscopy of transient plasma phenomena. For a variety of spectroscopic and imaging applications, the angular sensitivity of MCPs must be known for correctly interpreting the data. We present systematic measurements of angular sensitivity at discrete relevant photon energies and arbitrary MCP gain. The results can been accurately predicted by using a simple 2D approximation to… more
Date: July 24, 2000
Creator: Landen, O L; Lobban, A; Tutt, T; Bell, P M; Costa, R & Ze, F
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Dynamic Software Testing of MPI Applications with Umpire

Description: As evidenced by the popularity of MPI (Message Passing Interface), message passing is an effective programming technique for managing coarse-grained concurrency on distributed computers. Unfortunately, debugging message-passing applications can be difficult. Software complexity, data races, and scheduling dependencies can make programming errors challenging to locate with manual, interactive debugging techniques. This article describes Umpire, a new tool for detecting programming errors at runt… more
Date: July 24, 2000
Creator: Vetter, J & de Supinski, B
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Defects at the carbon terminated SiC (001) surface

Description: We present first principle molecular dynamics simulations for selected point defects on the (001) stoichiometric carbon terminated surface of cubic Silicon Carbide. In particular we investigated missing units and coordination defects. The results of our calculations are compared with recent experiments, in particular we discuss simulated STM images, which are in good agreement with measured ones.
Date: July 24, 2000
Creator: Catellani, A & Galli, G
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Real-time control system for adaptive resonator

Description: Sustained operation of high average power solid-state lasers currently requires an adaptive resonator to produce the optimal beam quality. We describe the architecture of a real-time adaptive control system for correcting intra-cavity aberrations in a heat capacity laser. Image data collected from a wavefront sensor are processed and used to control phase with a high-spatial-resolution deformable mirror. Our controller takes advantage of recent developments in low-cost, high-performance process… more
Date: July 24, 2000
Creator: Flath, L.; An, J.; Brase, J.; Hurd, R.; Kartz, M.; Sawvel, R. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Electricity Restructuring: Comparison of Comprehensive Bills

Description: Once considered the nation's most regulated industry, the electric utility industry is evolving into a more competitive environment. Currently, the focus of this development is the generating sector, where the advent of new generating technologies has lowered both entry barriers to competitors of traditional utilities and the marginal costs of those competitors below those of some traditional utilities. This technological advance has combined with legislative initiatives, such as the Energy Pol… more
Date: July 24, 2000
Creator: Parker, Larry & Abel, Amy
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

The ASCI Network for SC '99: A Step on the Path to a 100 Gigabit Per Second Supercomputing Network

Description: This document highlights the Discom{sup 2}'s Distance computing and communication team activities at the 1999 Supercomputing conference in Portland, Oregon. This conference is sponsored by the IEEE and ACM. Sandia, Lawrence Livermore and Los Alamos National laboratories have participated in this conference for eleven years. For the last four years the three laboratories have come together at the conference under the DOE's ASCI, Accelerated Strategic Computing Initiatives rubric. Communication s… more
Date: July 24, 2000
Creator: Pratt, Thomas J.; Tarman, Thomas D.; Martinez, Luis M.; Miller, Marc M.; Adams, Roger L.; Chen, Helen Y. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Optical studies of the {beta}{double_prime}-(ET){sub 2}SF{sub 5}RSO{sub 3} R = CH{sub 2}CF{sub 2}, CHFCF{sub 2} and CHF system: Chemical tuning of the counterion

Description: The authors compare the polarized optical spectra of the organic metal {beta}{double_prime}-(ET){sub 2}SF{sub 5}CHFSO{sub 3} and the {beta}{double_prime}-ET{sub 2}SF{sub 5}CHFCF{sub 2}SO{sub 3} metal/insulator material with those of the first fully organic superconductor {beta}{double_prime}-ET{sub 2}SF{sub 5}CH{sub 2}SO{sub 3}. The small chemical modification of the counterion has a dramatic effect on the spectral and charge transport properties of these materials, and they discuss their elect… more
Date: July 24, 2000
Creator: Olejniczak, I.; Jones, B. R.; Dong, J.; Pigos, J. M.; Zhu, Z.; Garlach, A. D. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

A high-precision cryogenically-cooled crystal monochromator for the APS diagnostics beamline

Description: A high-precision cryogenically-cooled crystal monochromator has been developed for the APS diagnostics beamline. The design permits simultaneous measurements of the particle beam size and divergence. It provides for a large rotation angle, {minus}15{degree} to 180{degree}, with a resolution of 0.0005{degree}. The roll angle of the crystal can be adjusted by up to {+-}3{degree} with a resolution of 0.0001{degree}. A vertical translational stage, with a stroke of {+-}25 mm and resolution of 8 {mi… more
Date: July 24, 2000
Creator: Rotela, E.; Yang, B.; Sharma, S. & Barcikowski, A.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Liquid fuel reformer development: Autothermal reforming of Diesel fuel

Description: Argonne National Laboratory is developing a process to convert hydrocarbon fuels to clean hydrogen feeds for a polymer electrolyte fuel cell. The process incorporates an autothermal reforming catalyst that can process hydrocarbon feeds at lower temperatures than existing commercial catalysts. The authors have tested the catalyst with three diesel-type fuels: hexadecane, certified low-sulfur grade 1 diesel, and a standard grade 2 diesel. Hexadecane yielded products containing 60% hydrogen on a d… more
Date: July 24, 2000
Creator: Pereira, C.; Bae, J-M.; Ahmed, S. & Krumpelt, M.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Unique Rock-n-Roll Dynamic Appearance of a Ge-Si Ad-Dimer on Si(001)

Description: The authors carry out a comparative study of the energetic and dynamics of Si-Si, Ge-Ge, and Ge-Si ad-dimers on top of a dimer row in the Si(001) surface, using first-principles calculations. The dynamic appearance of a Ge-Si dimer is distinctively different from that of a Si-Si or Ge-Ge dimer, providing a unique way for its identification by scanning tunneling microscopy (STM). Its rocking motion, observed in STM, actually reflects a 180{degree} rotation of the dimer, involving a piecewise-rot… more
Date: July 24, 2000
Creator: Lu, Zhong-Yi; Liu, Feng; Wang, Cai-Zhuang; Qin, X. R.; Swartzentruber, Brian S.; Lagally, M. G. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Simulation of Granular Compacts in Two Dimensions

Description: Simulations of granular packings in 2-D by throwing disks in a rectangular die are performed. Different size distributions as bimodal, uniform and gaussian are used. Once the array of particles is done, a relaxation process is carried on using a large-amplitude, low-frequency vertical shaking. This relaxation is performed a number N of times. Then, the authors measure the density of the package, contact distribution, coordination number distribution, entropy and also the disks size distribution… more
Date: July 24, 2000
Creator: Vidales, A. M.; Kenkre, V. M. & Hurd, Alan J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Materials recovery from shredder residues

Description: Each year, about five (5) million ton of shredder residues are landfilled in the US. Similar quantities are landfilled in Europe and the Pacific Rim. Landfilling of these residues results in a cost to the existing recycling industry and also represents a loss of material resources that are otherwise recyclable. In this paper, the authors outline the resources recoverable from typical shredder residues and describe technology that they have developed to recover these resources.
Date: July 24, 2000
Creator: Daniels, E. J.; Jody, B. J. & Pomykala, J., Jr.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

On the ``inverse'' isotope effect in organic superconductors: New findings and implications

Description: The inverse deuterium isotope effect, previously found in K-(BEDT-TTF){sub 2}CU(NCS){sub 2}, is also found in two other BEDT-TTF-based superconductors with different packing motifs and different types of anions. Remarkably, the magnitude of the isotope shift is essentially identical in all three superconductors, ca. +0.26 {+-} 0.06 K. These results, when taken together with the recent results of Lang et al. on the uniaxial pressure derivatives of T{sub c}, suggest that the inverse isotope effec… more
Date: July 24, 2000
Creator: Kini, A. M.; Schlueter, J. A.; Ward, B. H.; Geiser, U. W. & Wang, H. H.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Assessment of the teledial gas-cooled transmuter concept

Description: The application of four gas-turbine, modular helium cooled reactors and an accelerator unit (GT/AD-MHR) has been proposed for burning transuranics recycled from LWR waste. The recycled LWR discharged transuranics encapsulated in TRISO coated particles are first loaded into the outer thermal spectrum zone of the GT/AD-MHR for burning in the critical mode for about three years. Previously burned fuel is in a central fast zone. In the fourth year, the same unit is configured as an accelerator-driv… more
Date: July 24, 2000
Creator: Taiwo, T. A.; Gohar, Y. & Finck, P. J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Energy-economy interactions revisited within a comprehensive sectoral model

Description: This paper describes a computable general equilibrium (CGE) model with considerable sector and technology detail, the ``All Modular Industry Growth Assessment'' Model (AMIGA). It is argued that a detailed model is important to capture and understand the several rolls that energy plays within the economy. Fundamental consumer and industrial demands are for the services from energy; hence, energy demand is a derived demand based on the need for heating, cooling mechanical, electrical, and transpo… more
Date: July 24, 2000
Creator: Hanson, D. A. & Laitner, J. A.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Transporting carbon dioxide recovered from fossil-energy cycles

Description: Transportation of carbon dioxide (CO{sub 2}) for enhanced oil recovery is a mature technology, with operating experience dating from the mid-1980s. Because of this maturity, recent sequestration studies for the US Department of Energy's National Energy Technology Laboratory have been able to incorporate transportation into overall energy-cycle economics with reasonable certainty. For these studies, two different coal-fueled plants are considered; the first collects CO{sub 2} from a 456-MW integ… more
Date: July 24, 2000
Creator: Doctor, R. D.; Molburg, J. C. & Brockmeier, J. F.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Preliminary Microstructural Characterization of Gadolinium-Enriched Stainless Steels for Spent Nuclear Fuel Baskets (title change from A)

Description: Gadolinium (Gd) is a very potent neutron absorber that can potentially provide the nuclear criticality safety required for interim storage, transport, and final disposal of spent nuclear fuel. Gd could be incorporated into an alloy that can be fabricated into baskets to provide structural support, corrosion resistance, and nuclear criticality control. In particular, Gd alloyed with stainless steel has been identified as a material that may fulfill these functional requirements. However, no info… more
Date: July 24, 2000
Creator: Dupont, J. N.; Robino, Charles V.; Stephens, John J., Jr.; Mcconnell, Paul E.; Mizia, R. & Branagan, D.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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