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2000 Census: Analysis of Fiscal Year 2000 Amended Budget Request

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 Bureau of the Census' fiscal year (FY) 2000 budget, focusing on: (1) an overall analysis of the key changes in assumptions resulting in the $1.7 billion request increase; (2) details on the components of this increase and which changes, according to the bureau, are related and which are not related to the inability to use statistical sampling… more
Date: September 22, 1999
Creator: United States. General Accounting Office.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Absolute CH radical concentrations in rich low-pressure methane-oxygen-argon flames via cavity ringdown spectroscopy of the A transition

Description: We measure cavity ringdown spectra of the A{sup 2}{Delta}-X{sup 2}II transition of the methylidyne (CH) radical in a series of rich low-pressure methane-oxygen-argon flames and demonstrate that the technique is sensitive, quantitative, and straightforward in its implementation and interpretation. As a line-of-sight technique, it complements imaging techniques, such as planar laser-induced fluorescence. Our results generally agree with chemical kinetic models for methane oxidation that have appe… more
Date: November 22, 1999
Creator: John W. Thomas, Jr & McIlroy, Andrew
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Accident Fault Trees for Defense Waste Processing Facility

Description: The purpose of this report is to document fault tree analyses which have been completed for the Defense Waste Processing Facility (DWPF) safety analysis. Logic models for equipment failures and human error combinations that could lead to flammable gas explosions in various process tanks, or failure of critical support systems were developed for internal initiating events and for earthquakes. These fault trees provide frequency estimates for support systems failures and accidents that could lead… more
Date: June 22, 1999
Creator: Sarrack, A.G.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Actively Biased p-Channel MOSFET Studied with Scanning Capacitance Microscopy

Description: Scanning capacitance microscopy (SCM) was used to study the cross section of an operating p-channel MOSFET. We discuss the novel test structure design and the modifications to the SCM hardware that enabled us to perform SCM while applying dc bias voltages to operate the device. The results are compared with device simulations performed with DAVINCI.
Date: September 22, 1999
Creator: Nakakura, Craig Y.; Hetherington, Dale L.; Shaneyfelt, Marty R.; Dodd, Paul E. & De Wolf, P.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Adaptive Optics and NICMOS Uniqueness Space

Description: As part of the HST Second Decade Study a subgroup consisting of Claire Max, James Beletic, Donald McCarthy, and Keith Noll has analyzed the expected performance of near-infra-red adaptive optics systems on the new generation of 8-10 meter ground-based telescopes, for comparison with HST. In addition the subgroup has polled the adaptive optics community regarding expected adaptive optics performance over the coming five years. Responses have been received from representatives of most of the majo… more
Date: March 22, 1999
Creator: Max, C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Aggregation of dialkyl-substituted diphosphonic acids and its effect on metal ion extraction.

Description: Solvent extraction reagents containing the diphosphonic acid group exhibit an extraordinary affinity for tri-, tetra- and hexavalent actinides. Their use has been considered for actinide separation and pre-concentration procedures. Solvent extraction data obtained with P,P{prime}-di(2-ethylhexyl) methane-, ethane- and butanediphosphonic acids exhibit features that are difficult to explain without Knowledge of the aggregation state of the extractants. Information about the aggregation of the dia… more
Date: October 22, 1999
Creator: Chiarizia, R.; Barrans, R. E., Jr.; Ferraro, J. R. Herlinger, A. W. & McAlister, D. R.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Airport Financing: Smaller Airports Face Future Funding Shortfalls

Description: Testimony issued by the General Accounting Office with an abstract that begins "Pursuant to a congressional request, GAO discussed airport funding issues as they apply to smaller airports, focusing on: 1) how much funding has been made available to airports, particularly smaller airports, for their capital development and what are the sources of these funds; (2) comparing airports' plans for future development with current funding levels; and (3) what effect will various proposals to increase o… more
Date: February 22, 1999
Creator: United States. General Accounting Office.
Item Type: Refine your search to only Text
Partner: UNT Libraries Government Documents Department
open access

Amchitka Island, Alaska, Potential U.S. Department of Energy Site Responsibilities

Description: This historical records review report concerns the activities of the US Atomic Energy Commission (AEC) at Amchitka Island, Alaska, over a period extending from 1942 to 1993. The report focuses on AEC activities resulting in known or suspected contamination of the island environment by nonradiological hazardous or toxic materials as discerned through historical records. In addition, the information from historical records was augmented by an August 1998 sampling event. Both the records review an… more
Date: January 22, 1999
Creator: United States. Department of Energy. Nevada Operations Office.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Analysis of Parameters Affecting Beam Gauge Performance

Description: Beam gauges have been used in the last decade or so for measuring the internal azimuthal compressive coil stresses in superconducting magnets. In early model Large Hadron Collider Interaction Region (LHC IR) quadrupoles tested at Fermilab, the beam gauges indicated excessively high amounts of inner and outer coil prestress during the collaring process, inconsistent with the coil size and modulus data. In response to these measurements, a simple mechanics based quantitative understanding of diff… more
Date: December 22, 1999
Creator: S. Yadav, J. Kerby and J.P. Ozelis
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Angular quadratures for improved transport computations

Description: This paper introduces new octant-range, composite-type Gauss and mid-point rule angular quadrature formulas for neutron and photon transport computations. A generalization to octant-range quadratures is also introduced in order to allow for discontinuities at material interfaces for two- and three-dimensional transport problems which can be modeled with 60-degree triangular or hexagonal mesh subdivisions in the x-y plane.
Date: July 22, 1999
Creator: Abu-Shumays, I.K.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Application of Principal Component Analysis and Bayesian Decomposition to Relaxographic Imaging

Description: Recent developments in high field imaging have made possible the acquisition of high quality, low noise relaxographic data in reasonable imaging times. The datasets comprise a huge amount of information (>>1 million points) which makes rigorous analysis daunting. Here, the authors present results demonstrating that Principal Component Analysis (PCA) and Bayesian Decomposition (BD) provide powerful methods for relaxographic analysis of T{sub 1} recovery curves and editing of tissue type in… more
Date: May 22, 1999
Creator: Ochs, M. F.; Stoyanova, R. S.; Brown, T. R.; Rooney, W. D.; Li, X.; Lee, J. H. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Application of Principal Component Analysis to Relaxographic Images

Description: Standard analysis methods for processing inversion recovery MR images traditionally have used single pixel techniques. In these techniques each pixel is independently fit to an exponential recovery, and spatial correlations in the data set are ignored. By analyzing the image as a complete dataset, improved error analysis and automatic segmentation can be achieved. Here, the authors apply principal component analysis (PCA) to a series of relaxographic images. This procedure decomposes the 3-dime… more
Date: May 22, 1999
Creator: Stoyanova, R. S.; Ochs, M. F.; Brown, T. R.; Rooney, W. D.; Li, X.; Lee, J. H. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

[Application Received: Marcus Fellow Program]

Description: An official letter acknowledging the receipt of the application for the Marcus Fellow Program in the School of Visual Arts at the University of North Texas (UNT). The letter confirms the successful submission and outlines the next steps in the application process.
Date: March 22, 1999
Item Type: Refine your search to only Letter
Partner: UNT Libraries Special Collections
open access

[Application Update: Under Review by UNT Selection Committee]

Description: A letter from the Administrative Office of the University of North Texas (UNT) providing an update on the application status. The letter informs the applicant that their materials have been received and are currently under review by the Selection Committee. Additionally, it outlines a tentative timeline for the next steps in the application process.
Date: March 22, 1999
Item Type: Refine your search to only Letter
Partner: UNT Libraries Special Collections
open access

The APS control system network upgrade.

Description: When it was installed,the Advanced Photon Source (APS) control system network was at the state-of-the-art. Different aspects of the system have been reported at previous meetings [1,2]. As loads on the controls network have increased due to newer and faster workstations and front-end computers, we have found performance of the system declining and have implemented an upgraded network. There have been dramatic advances in networking hardware in the last several years. The upgraded APS controls n… more
Date: October 22, 1999
Creator: Sidorowicz, K. v.; Leibfritz, D. & McDowell, W. P.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Assessing the disposal of wastes containing NORM in nonhazardous waste landfills

Description: In the past few years, many states have established specific regulations for the management of petroleum industry wastes containing naturally occurring radioactive material (NORM) above specified thresholds. These regulations have limited the number of disposal options available for NORM-containing wastes, thereby increasing the related waste management costs. In view of the increasing economic burden associated with NORM management, industry and regulators are interested in identifying cost-ef… more
Date: November 22, 1999
Creator: Smith, K. P.; Blunt, D. L.; Williams, G. P.; Arnish, J. J.; Pfingston, M. R. & Herbert, J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Assessing the Long-Term Hydrologic Impact of Land Use Change Using a GIS-NPS Model and the World Wide Web

Description: Assessment of the long-term hydrologic impacts of land use change is important for optimizing management practices to control runoff and non-point source (NPS) pollution associated with watershed development. Land use change, dominated by an increase in urban/impervious areas, can have a significant impact on water resources. Non-point source (NPS) pollution is the leading cause of degraded water quality in the US and urban areas are an important source of NPS pollution. Despite widespread conc… more
Date: September 22, 1999
Creator: Bhaduri, B.; Engel, B.; Harbor, J.; Jones, D. & Lim, K.J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Assessment of historical leak model methodology as applied to the REDOX high-level waste tank SX-108

Description: Using the Historical Leak Model approach, the estimated leak rate (and therefore, projected leak volume) for Tank 241-SX-108 could not be reproduced using the data included in the initial document describing the leak methodology. An analysis of parameters impacting tank heat load calculations strongly suggest that the historical tank operating data lack the precision and accuracy required to estimate tank leak volumes using the Historical Leak Model methodology.
Date: September 22, 1999
Creator: Jones, T. E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Atmospheric neutrinos in Soudan 2.

Description: The value and zenith angle dependence of the atmospheric neutrino flavor ratio is interpreted as evidence for neutrino oscillations. The latest values from the Soudan 2 detector are presented. From 4.2 kt-years fiducial exposure, Soudan 2 measures R = 0.66 {+-} 0.11(stat) + 0.05--0.06(syst). Using a subset of the data with the best angular resolution, they plot the L/E distribution and use this to find the allowed region in oscillation parameter space. Their fit suggests that delta m-squared is… more
Date: June 22, 1999
Creator: Goodman, M. C. & Collaboration, The Soudan 2
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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