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open access

Bankruptcy Reform: Use of the Homestead Exemption by Chapter 7 Bankruptcy Debtors in the Northern District of Texas and the Southern District of Florida

Description: Correspondence issued by the General Accounting Office with an abstract that begins "Pursuant to a congressional request, GAO provided information on the average and median amount of all homestead exemptions claimed by debtors in the Northern District of Texas and the Southern District of Florida, focusing on: (1) information on debtors' use of the homestead exemption in these two districts; and (2) data on the number of personal chapter 7 bankruptcy cases closed in calendar year 1998 in the re… more
Date: July 12, 1999
Creator: United States. General Accounting Office.
Partner: UNT Libraries Government Documents Department
open access

Defense Infrastructure: Observations on Aviation Training Consolidation and Expansion Plans

Description: A letter report issued by the General Accounting Office with an abstract that begins "Pursuant to a congressional request, GAO provided information on the Department of Defense's (DOD) efforts to reduce the infrastructure that supports initial pilot training, focusing on: (1) DOD's prior efforts to reduce aircraft training infrastructure; (2) plans for expanding pilot training capacity; and (3) the likelihood of further consolidations."
Date: July 12, 1999
Creator: United States. General Accounting Office.
Partner: UNT Libraries Government Documents Department
open access

Defense Acquisitions: Evaluation of Navy's Anti-Submarine Warfare Assessment

Description: A letter report issued by the General Accounting Office with an abstract that begins "Pursuant to a congressional request, GAO reviewed: (1) the Navy's 1997 antisubmarine warfare (ASW) assessment; (2) the role and funding influence of the Navy's recently established Antisubmarine Warfare Requirements Division; and (3) whether the assessment is supported by rigorous analysis of ASW shortfalls and capabilities and establishes priorities among ASW programs, as directed by congressional conferees o… more
Date: July 12, 1999
Creator: United States. General Accounting Office.
Partner: UNT Libraries Government Documents Department
open access

Aviation Safety: Research Supports Limited Use of Personal Computer Aviation Training Devices for Pilots

Description: A letter report issued by the General Accounting Office with an abstract that begins "Pursuant to a congressional request, GAO reviewed the Federal Aviation Administration's (FAA) decision to allow the use of personal computer-based aviation training devices (PCATD), focusing on: (1) the process and information FAA used in deciding to approve the use of personal computer devices for 10 hours of instrument training; and (2) what is known about the training effectiveness of these devices and thei… more
Date: July 12, 1999
Creator: United States. General Accounting Office.
Partner: UNT Libraries Government Documents Department
open access

Conceptual Design Report Cask Loadout Sys and Cask Drop Redesign for the Immersion Pail Support Structure and Operator Interface Platform at 105 K West

Description: This conceptual design report documents the redesign of the IPSS and the OIP in the 105 KW Basin south loadout pit due to a postulated cask drop accident, as part of Project A.5/A.6, Canister Transfer Facility Modifications. Project A.5/A.6 involves facility modifications needed to transfer fuel from the basin into the cask-MCO. The function of the IPSS is to suspend, guide, and position the immersion pail. The immersion pail protects the cask-MCO from contamination by basin water and acts as a… more
Date: July 12, 1999
Creator: Langevin, A. S.
Partner: UNT Libraries Government Documents Department
open access

The Sandia/Arzamas-16 Magazine-to-Magazine Remote Monitoring Field Trial Evaluation

Description: Sandia National Laboratories and the Russian Federal Nuclear Center-All Russian Research Institute for Experimental Physics (VNIIEF) (also known as Arzamas-16) are collaborating on ways to assure the highest standards of safety, security, and international accountability of fissile material. For these collaborations, sensors and information technologies have been identified as important in reaching these standards in a cost-effective manner. Specifically, Sandia and VNIIEF have established a se… more
Date: July 12, 1999
Creator: Barkanov, Boris; Blagin, Sergei; Croessmann, Dennis; Damico, Joe; Ehle, Steve & Nilsen, Curt
Partner: UNT Libraries Government Documents Department
open access

Chemical Grouting Lost-Circulation Zones with Polyurethane Foam

Description: Sandia National Laboratories is developing polyurethane foam as a chemical grout for lost circulation zones. In past work polyurethane foam was tried with limited success in laboratory tests and GDO sponsored field tests. Goals were that the foam expanded significantly and harden to a chillable firmness quickly. Since that earlier work there have been improvements in polyurethane chemistry and the causes of the failures of previous tests have been identified. Recent success in applying pure sol… more
Date: July 12, 1999
Creator: Mansure, A. J. & Westmoreland, J. J.
Partner: UNT Libraries Government Documents Department
open access

An Investigation of Molecular Templating in Amorphous Silicas by Cross-Polarization NMR Spectroscopy

Description: The precise pore sizes defined by crystalline zeolite lattices have led to intensive research on zeolite membranes. Unfortunately zeolites have proven to be extremely difficult to prepare in a defect-free thin film form needed for membrane flux and selectivity. We introduce tetrapropylammonium (TPA), a structure-directing agent for zeolite ZSM-5, into a silica sol and exploit the development of high solvation stresses to create templated amorphous silicas with pore apertures comparable in size … more
Date: July 12, 1999
Creator: Assink, R. A.; Brinker, C. J.; Click, C. A. & Naik, S. J.
Partner: UNT Libraries Government Documents Department
open access

Absorbance and Photoluminescence of Si, Ge, and MoS2 Nanoparticles Studied by Liquid Chromatography

Description: The authors have successfully synthesized highly crystalline, size-selected indirect band-gap nanocrystals (NC) of Si, Ge and MoS{sub 2} in the size range 2-10 nm in inverse micelles and studied their optical absorption and photoluminescence (PL) properties using liquid chromatography. Room temperature, visible PL from these nanocrystals was demonstrated in the range 700-350 nm (1.8-3.5 eV). their experimental results are interpreted in terms of the corresponding electronic structure of the bul… more
Date: July 12, 1999
Creator: Provencio, P. P.; Samara, G. A. & Wilcoxon, J. P.
Partner: UNT Libraries Government Documents Department
open access

Fourier Transform Luminescence Spectroscopy of Semiconductor Thin Films and Devices

Description: We have been successful in adapting Fourier transform (FT) Raman accessories and spectrophotometers for sensitive measurements of the photoluminescence (PL) spectra of photovoltaic materials and devices. In many cases, the sensitivity of the FT technique allows rapid room-temperature measurements of weak luminescence spectra that cannot be observed using dispersive PL spectrophotometers. We present here the results of a number of studies of material and device quality obtained using FT-luminesc… more
Date: July 12, 1999
Creator: Webb, J. D.; Keyes, B. M.; Ahrenkiel, R. K.; Wanlass, M. W.; Ramanathan, K.; Gedvilas, L. M. et al.
Partner: UNT Libraries Government Documents Department
open access

A Proposal for an Advanced Drilling System with Real-Time Diagnostics (Diagnostics-While-Drilling)

Description: In this paper, we summarize the rationale for an advanced system called Diagnostics-While-Drilling (DWD) and describe its benefits, preliminary configuration, and essential characteristics. The central concept is a closed data circuit in which downhole sensors collect information and send it to the surface via a high-speed data link, where it is combined with surface measurements and processed through drilling advisory software. The driller then uses this information to adjust the drilling proc… more
Date: July 12, 1999
Creator: Finger, J. T.; Mansure, A. J. & Prairie, M. R.
Partner: UNT Libraries Government Documents Department
open access

QA objectives for nondestructive assay at the Waste Receiving and Processing (WRAP) Facility

Description: This report summarizes the validation of the WRAP NDA systems against the various QAOs. A brief description of each test and any significant conclusions is included. Variables which may have affected test outcomes are examined. This report will be reviewed semi-annually and updated as necessary.
Date: July 12, 1999
Creator: Wills, C. E.
Partner: UNT Libraries Government Documents Department
open access

Monitoring Plan for Fiscal Year 1999 Borehole Logging at 200 East Area Specific Retention Facilities

Description: The Hanford Groundwater Monitoring Project's vadose zone monitoring effort for fiscal year (FY) 1999 involves monitoring 30 boreholes for moisture content and gamma-ray emitting radionuclides. The boreholes are associated with specific retention trenches and cribs in the 200 East Area of the Hanford Site. The facilities to be monitored are the 216-A-2, -4, and -7 cribs, the 216-A-18 trench, the 216-B-14 through -19 cribs, the 216-B-20 through -34, -53A, and -58 trenches, the 216-B-35 through -4… more
Date: July 12, 1999
Creator: Horton, D. G.
Partner: UNT Libraries Government Documents Department
open access

Origin of Compact Triangular Islands in Metal-on-Metal Growth

Description: The microscopic origin of compact triangular islands on close-packed surfaces is identified using kinetic Monte Carlo simulations with energy barriers obtained from density-functional calculations. In contrast to earlier accounts, corner diffusion anisotropy is found to control the shape of compact islands at intermediate temperatures. We rationalize the correlation between the orientation of dendrites grown at low temperatures and triangular islands grown at higher temperatures, and explain wh… more
Date: July 12, 1999
Creator: Bogicevic, Alexander; Lundqvist, Bengt I. & Ovesson, Staffan
Partner: UNT Libraries Government Documents Department
open access

South Ramp 3.01.X Area Ground Support Analysis

Description: The purpose of this analysis is to evaluate the stability and determine ground support requirements for the 3.01.X areas in the Exploratory Studies Facility (ESF) South Ramp. The 3.01.X area refers to the ESF tunnel portions that were constructed under Section 3.01.X of the ESF General Construction Specification (Reference 8.4). Four 3.01.X areas in the ESF Main Loop are covered in this analysis that extend from Station 60+15.28 to 60+49.22, 62+04.82 to 62+32.77, 75+21.02 to 75+28.38, and 76+63… more
Date: July 12, 1999
Creator: Bonabian, Saeed
Partner: UNT Libraries Government Documents Department
open access

On the Convergence of an Implicitly Restarted Arnoldi Method

Description: We show that Sorensen's [35] implicitly restarted Arnoldi method (including its block extension) is simultaneous iteration with an implicit projection step to accelerate convergence to the invariant subspace of interest. By using the geometric convergence theory for simultaneous iteration due to Watkins and Elsner [43], we prove that an implicitly restarted Arnoldi method can achieve a super-linear rate of convergence to the dominant invariant subspace of a matrix. Moreover, we show how an IRAM… more
Date: July 12, 1999
Creator: Lehoucq, Richard B.
Partner: UNT Libraries Government Documents Department
open access

A strategy for a realization of a problem free Einstein - Hilbert action along with a problem free toy cosmology

Description: We describe features of a low energy effective Scalar-Tensor theory of gravity having a divergent non-minimal coupling at a point where a fermionic part of the action identically vanishes and is therefore non-dynamical. Under fairly general conditions, theories having a divergent non-minimal coupling at a point can support non-topological soliton solutions. The interior of all sufficiently large solitonic domains approach a unique limit point determined by the vanishing of the effective potenti… more
Date: July 12, 1999
Creator: Sethi, Daksh Lohiya and Meetu
Partner: UNT Libraries Government Documents Department
open access

The CDF silicon vertex tracker

Description: The Silicon Vertex Tracker (SVT) is presently being built as part of CDF upgrades. It is the online tracker which will reconstruct 2D tracks using information from the Silicon Vertex Detector (SVXII) and the Central Outer Chamber (COT). The precision measurement of the track impact parameter will allow to select high statistics b samples at trigger level and attack the study of CP violation in the b sector (i.e. in the B<sup>0</sup><sub>d</sub> {yields} {pi}<sup>+</sup>{pi}<sup>-</sup> decay) a… more
Date: July 12, 1999
Creator: Donati, S.
Partner: UNT Libraries Government Documents Department
captions transcript

[News Clip: AA Anniv]

Description: Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date: July 12, 1999, 6:00 p.m.
Duration: 2 minutes 03 seconds
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Partner: UNT Libraries Special Collections
open access

Safe and Fast Quench Recovery of Large Superconducting Solenoids Cooled by Forced Two-Phase Helium Flow.

Description: The cryogenic characteristics in energy extraction of the four fifteen-meter-diameter superconducting solenoids of the g-2 magnet are reported in this paper. The energy extraction tests at full-current and half-current of its operating value were deliberately carried out for the quench analyses and evaluation of the cryogenic system. The temperature profiles of each coil mandrel and pressure profiles in its helium cooling tube during the energy extraction are discussed. The low peak temperature… more
Date: July 12, 1999
Creator: Jia, L. X.
Partner: UNT Libraries Government Documents Department
open access

The Experimental Study of a Single Stage G-M Refrigerator With the Regenerator Set Outside the Cylinder.

Description: In this paper, a single-stage G-M refrigerator with the regenerator set outside the cylinder is presented. The experimental system for testing the performance of the cryocooler was constructed. The lowest temperature was 14K when the operating frequency was 0.6 Hz. The cooling capacity of 4.4W has been obtained at 20K. The effects of operating parameters of the refrigerator on cooling performance were also experimentally studied.
Date: July 12, 1999
Creator: Wang, L.
Partner: UNT Libraries Government Documents Department
open access

The ARAC client system: network-based access to ARAC

Description: The ARAC Client System allows users (such as emergency managers and first responders) with commonly available desktop and laptop computers to utilize the central ARAC system over the Internet or any other communications link using Internet protocols. Providing cost-effective fast access to the central ARAC system greatly expands the availability of the ARAC capability. The ARAC Client system consists of (1) local client applications running on the remote user's computer, and (2) ''site servers'… more
Date: July 12, 1999
Creator: Leach, Martin J.; Sumikawa, Denise & Webster, Chris
Partner: UNT Libraries Government Documents Department
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