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Homeownership: Cancellation and Termination Provisions of the Homeowners Protection Act of 1998

Description: Correspondence issued by the General Accounting Office with an abstract that begins "Pursuant to a legislative requirement, GAO reviewed the Homeowners Protection Act of 1998, focusing on the: (1) act's cancellation and termination provisions for private mortgage insurance; (2) act's high-risk provisions; (3) effect high-risk provisions would have on mortgage lenders; and (4) number and characteristics of residential mortgage loans that are considered high risk and are therefore excluded from t… more
Date: December 10, 1999
Creator: United States. General Accounting Office.
Partner: UNT Libraries Government Documents Department
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Medicaid and Special Education: Coordination of Services for Children With Disabilities Is Evolving

Description: A letter report issued by the General Accounting Office with an abstract that begins "Pursuant to a congressional request, GAO reviewed the mechanisms of coordination between Medicaid and the Individuals With Disabilities Education Act (IDEA), focusing on: (1) how Medicaid and IDEA interact to meet the needs of low-income school-aged children with disabilities; and (2) issues that have arisen in coordinating Medicaid and IDEA services in schools."
Date: December 10, 1999
Creator: United States. General Accounting Office.
Partner: UNT Libraries Government Documents Department
open access

Federal Facilities: Alternative Land Uses Could Save Water at Fallon Naval Air Station, Nevada

Description: A letter report issued by the General Accounting Office with an abstract that begins "Pursuant to a congressional request, GAO provided information on alternative land uses that could save water at Fallon Naval Air Station, Nevada, focusing on: (1) the aviation safety and operational requirements for the runway protection zone at Fallon Naval Air Station (NAS); (2) the alternative land use strategies Fallon NAS identified in response to congressional direction and how it evaluated them; and (3)… more
Date: December 10, 1999
Creator: United States. General Accounting Office.
Partner: UNT Libraries Government Documents Department
open access

Air Force Depot Maintenance: Analysis of Its Financial Operations

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 financial operations of the Air Force depot maintenance activity group, focusing on the: (1) Air Force depot maintenance activity group's price increase between fiscal year (FY) 1994 and FY 1999 and the primary reasons for it; (2) activity group's financial losses during FY 1994 through FY 1998 and the primary reasons for them; and (3) Air Fo… more
Date: December 10, 1999
Creator: United States. General Accounting Office.
Partner: UNT Libraries Government Documents Department
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Public Education: Title I Services Provided to Students With Limited English Proficiency

Description: A letter report issued by the General Accounting Office with an abstract that begins "Pursuant to a congressional request, GAO provided information on: (1) how many students with limited English proficiency are being served through targeted and schoolwide Elementary and Secondary Education Act Title I programs; (2) how students with limited English proficiency are being served through targeted and schoolwide Title I programs; (3) how many Title I teachers in schools serving students with limite… more
Date: December 10, 1999
Creator: United States. General Accounting Office.
Partner: UNT Libraries Government Documents Department
open access

The Oak Ridge Heat Pump Models: I. A Steady-State Computer Design Model of Air-to-Air Heat Pumps

Description: The ORNL Heat Pump Design Model is a FORTRAN-IV computer program to predict the steady-state performance of conventional, vapor compression, electrically-driven, air-to-air heat pumps in both heating and cooling modes. This model is intended to serve as an analytical design tool for use by heat pump manufacturers, consulting engineers, research institutions, and universities in studies directed toward the improvement of heat pump performance. The Heat Pump Design Model allows the user to specif… more
Date: December 10, 1999
Creator: Fischer, S.K. Rice, C.K.
Partner: UNT Libraries Government Documents Department
open access

Effect of Sawtooth Oscillations on Energetic Ions

Description: The work summarizes results of the authors' studies on the energetic ion transport induced by sawtooth oscillations in tokamaks. The main attention is paid to description of physical mechanisms responsible for the transport. In addition to overview, the work contains new material. The new results concern the resonant interaction of the particles and the electromagnetic field of the sawtooth crash. In particular, it is discovered that the dominant harmonic of the crash (m = n = 1) can lead to st… more
Date: December 10, 1999
Creator: White, R. B.; Lutsenko, V. V.; Kolesnichenko, Ya. I. & Yakovenko, Yu. V.
Partner: UNT Libraries Government Documents Department
open access

Visualization of Magnetically Confined Plasmas

Description: With the rapid developments in experimental and theoretical fusion energy research towards more geometric details, visualization plays an increasingly important role. In this paper we will give an overview of how visualization can be used to compare and contrast some different configurations for future fusion reactors. Specifically we will focus on the stellarator and tokamak concepts. In order to gain understanding of the underlying fundamental differences and similarities these two competing … more
Date: December 10, 1999
Creator: Lewandowski, J.L.V.
Partner: UNT Libraries Government Documents Department
open access

Drift Wave Simulations with Reduced Stellarator Equilibria

Description: A three-field model to study drift-resistive, low-frequency waves in low-beta, non-axisymmetric plasmas [J.L.V. Lewandowski, Phys. Plasmas, 4 (11) 4023 (1997)] is used to analyze the effect of the inhomogeneities in the stellarator magnetic field on the fastest (linear) growth rate, gamma. Extensive numerical calculations for a toroidal heliac show that not all Fourier components in the representation of the equilibrium configuration are important as far as gamma is concerned.
Date: December 10, 1999
Creator: Lewandowski, J.L.V.
Partner: UNT Libraries Government Documents Department
open access

Fragmentation of CDF jets: Perturbative or non-perturbative?

Description: Presented are the most recent jet fragmentation results from CDF: inclusive distributions of charged particle momenta and their k{sub T} in jets; average track multiplicities, as well as angular distributions of multiplicity flow, for a wide range of jet energies with E{sub T} from 40 to 300 GeV. The results are compared with Monte-Carlo and, when possible, analytical calculations performed in resumed perturbative QCD approximations (MLLA).
Date: December 10, 1999
Creator: Safonov, Alexei N.
Partner: UNT Libraries Government Documents Department
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Confinement of Pure Ion Plasma in a Cylindrical Current Sheet

Description: A novel method for containing a pure ion plasma at thermonuclear densities and temperatures has been modeled. The method combines the confinement properties of a Penning-Malmberg trap and some aspects of the magnetic field geometry of a pulsed theta-pinch. A conventional Penning trap can confine a uniform-density plasma of about 5x1011 cm-3 with a 30-Tesla magnetic field. However, if the axial field is ramped, a much higher local ion density can be obtained. Starting with a 107 cm-3 trapped deu… more
Date: December 10, 1999
Creator: Phillips, C.K.; Chao, E.H.; Davidson, R.C. & Paul, S.F.
Partner: UNT Libraries Government Documents Department
open access

Reduced chemical kinetic mechanisms for hydrocarbon fuels

Description: Using CARM (Computer Aided Reduction Method), a computer program that automates the mechanism reduction process, a variety of different reduced chemical kinetic mechanisms for ethylene and n-heptane have been generated. The reduced mechanisms have been compared to detailed chemistry calculations in simple homogeneous reactors and experiments. Reduced mechanisms for combustion of ethylene having as few as 10 species were found to give reasonable agreement with detailed chemistry over a range of … more
Date: December 10, 1999
Creator: Montgomery, C. J.; Cremer, M. A.; Heap, M. P.; Chen, J. Y.; Westbrook, C. K. & Maurice, L. Q.
Partner: UNT Libraries Government Documents Department
open access

The Department of Energy’s Spallation Neutron Source Project: Description and Issues

Description: This report describes the SNS's management, project costs, schedule, site selection, and funding, and discusses issues raised by some congressional critics of the project, such as management problems, potential cost overruns, and schedule delays.
Date: December 10, 1999
Creator: Barth, Kai-Henrik
Partner: UNT Libraries Government Documents Department
open access

Polarized Light Propagation in Biological Tissue and Tissue Phantoms

Description: Imaging through biologic tissue relies on the discrimination of weakly scattered from multiply scattered photons. The degree of polarization can be used as the discrimination criterion by which to reject multiply scattered photons. Polarized light propagation through biologic tissue is typically studied using tissue phantoms consisting of dilute aqueous suspensions of microsphere. We show that, although such phantoms are designed to match the macroscopic scattering properties of tissue (i.e.. t… more
Date: December 10, 1999
Creator: Sankaran, V.; Walsh, J.T. & Maitland, D.
Partner: UNT Libraries Government Documents Department
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Superplasticity and joining of zirconia-based ceramics

Description: Steady-state creep and joining of alumina/zirconia composites containing alumina volume fractions of 20, 60, and 85% have been investigated between 1,250 and 1,350 C. Superplasticity of these compounds is controlled by grain-boundary sliding and the creep rate is a function of alumina volume fraction, not grain size. Using the principles of superplasticity, pieces of the composite have been joined by applying the stress required to achieve 5 to 10% strain to form a strong interface at temperatu… more
Date: December 10, 1999
Creator: Dominguez-Rodriguez, A.; Gutierrez-Mora, F.; Jimenez-Melendo, M.; Chaim, R. & Routbort, J. L.
Partner: UNT Libraries Government Documents Department
open access

Software Based Controls Module Development

Description: A project was initiated at the Oak Ridge Y-12 Plant to implement software geometric error compensation within a PC-based machine tool controller from Manufacturing Data Systems, Inc. This project may be the first in which this type of compensation system was implemented in a commercially available machine tool controller totally in software. Previous implementations typically required using an external computer and hardware to interface through the position feedback loop of the controller becau… more
Date: December 10, 1999
Creator: Graves, V. B.; Kelley, G. & Welch, J. C.
Partner: UNT Libraries Government Documents Department
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Testing and analysis of structural integrity of electrosleeved tubes under severe accident transients

Description: The structural integrity of flawed steam generator tubing with Electrosleeves{trademark} under simulated severe accident transients was analyzed by analytical models that used available material properties data and results from high-temperature tests conducted on Electrosleeved tubes. The Electrosleeve material is almost pure Ni and derives its strength and other useful properties from its nanocrystalline microstructure, which is stable at reactor operating temperatures. However, it undergoes r… more
Date: December 10, 1999
Creator: Majumdar, S.
Partner: UNT Libraries Government Documents Department
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Characterization of electrical resistivity as a function of temperature in the Mo-Si-B system

Description: Measurements of electrical resistivity as a function of temperature from 25 to 1,500 C were conducted on polycrystalline samples in the Mo-Si-B system. Single phase, or nearly single phase, samples were prepared for the following phases: Mo{sub 3}Si, Mo{sub 5}SiB{sub 2}, Mo{sub 5}Si{sub 3}B{sub x}, MoB, MoSi{sub 2}, and Mo{sub 5}Si{sub 3}. Thesis materials all exhibit resistivity values within a narrow range(4--22 x 10{sup {minus}7}{Omega}-m), and the low magnitude suggests these materials are … more
Date: December 10, 1999
Creator: Beckman, Sarah E.
Partner: UNT Libraries Government Documents Department
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Structural phase transition and electrode characteristics of LiMn{sub 2{minus}x}Mg{sub x}O{sub 4} positive electrode material for the lithium secondary battery

Description: With in mind improving the cycle performance of 4V class lithium manganese oxide positive electrode material for the lithium secondary battery, the authors have been investigating the effects of partial substitution of Mn by another metal. The crystal phase transition in the quaternary spinel LiMn{sub 2{minus}x}Mg{sub x}O{sub 4} was studied by neutron powder diffraction at 200K and DSC measurements at low temperatures. They find that substituting Mn by Mg resulted in a more stable crystal struc… more
Date: December 10, 1999
Creator: Idemoto, Y.; Udagawa, K.; Koura, N.; Richardson, J. W., Jr.; Takeuchi, K. & Loong, C.-K.
Partner: UNT Libraries Government Documents Department
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Development and evaluation of high resolution quadrupole mass analyzer and an inductively coupled plasma-Mach disk

Description: By definition a plasma is an electrically conducting gaseous mixture containing a significant concentration of cations and electrons. The Inductively Coupled Plasma (ICP) is an electrodeless discharge in a gas at atmospheric pressure. This discharge is an excellent one for vaporizing, atomizing, and ionizing elements. The early development of the ICP began in 1942 by Babat and then by Reed in the early 1960s. This was then followed by the pioneering work of Fassel and coworkers in the late 1960… more
Date: December 10, 1999
Creator: Amad, Ma'an Hazem
Partner: UNT Libraries Government Documents Department
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Fast methods for analysis of neurotransmitters from single cell and monitoring their releases in central nervous system by capillary electrophoresis, fluorescence microscopy and luminescence imaging

Description: Fast methods for separation and detection of important neurotransmitters and the releases in central nervous system (CNS) were developed. Enzyme based immunoassay combined with capillary electrophoresis was used to analyze the contents of amino acid neurotransmitters from single neuron cells. The release of amino acid neurotransmitters from neuron cultures was monitored by laser induced fluorescence imaging method. The release and signal transduction of adenosine triphosphate (ATP) in CNS was s… more
Date: December 10, 1999
Creator: Wang, Ziqiang
Partner: UNT Libraries Government Documents Department
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