Resource Type

States

Workforce Investment Act: Labor Has Taken Several Actions to Facilitate Access to One-Stops for Persons with Disabilities, but These Efforts May Not Be Sufficient (open access)

Workforce Investment Act: Labor Has Taken Several Actions to Facilitate Access to One-Stops for Persons with Disabilities, but These Efforts May Not Be Sufficient

A letter report issued by the Government Accountability Office with an abstract that begins "The Workforce Investment Act (WIA) of 1998 includes provisions intended to ensure that people with disabilities have equal opportunity to participate in and benefit from the programs and activities offered through one-stop career centers (one-stops). But little is known, and questions have been raised, about how well this system is working for persons with disabilities. This report examines (1) what the Department of Labor (Labor), states, and the one-stops have done to facilitate comprehensive access to the WIA one-stop system; (2) the various relationships that the one-stops have established with disability-related agencies to provide services to persons with disabilities; (3) what Labor has done to ensure that the one-stops are meeting the comprehensive access requirements, and the factors that have affected efforts to ensure compliance; and (4) what is known about the employment outcomes of persons with disabilities who use the one-stop system."
Date: December 14, 2004
Creator: United States. Government Accountability Office.
System: The UNT Digital Library
Federal Pell Grants for Prisoners (open access)

Federal Pell Grants for Prisoners

This report includes a brief discussion of the Pell Grant program, and the prior participation of prisoners, as well as a review of the current legislative activity.
Date: December 14, 2004
Creator: Mercer, Charmaine
System: The UNT Digital Library
Exempting Food and Agriculture Products from U.S. Economic Sanctions: Status and Implementation (open access)

Exempting Food and Agriculture Products from U.S. Economic Sanctions: Status and Implementation

This report includes information background and analysis regarding exemption for and agriculture products from United States economic sanctions. This report also details debates, enacted provisions, sales, and developments regarding this subject.
Date: December 14, 2004
Creator: Jurenas, Remy
System: The UNT Digital Library
Defense Authorization and Appropriations Bills: A Chronology, FY1970-FY2005 (open access)

Defense Authorization and Appropriations Bills: A Chronology, FY1970-FY2005

This report is a research aid, which lists the Department of Defense (DOD) authorization bills (Table 1) and appropriations bills (Table 2).
Date: December 14, 2004
Creator: Carter, Linwood B. & Coipuram, Thomas, Jr.
System: The UNT Digital Library
Investigating the Heating of a Potassium-Doped Aluminosilicate Ion Source Using a 1 Micron Laser (open access)

Investigating the Heating of a Potassium-Doped Aluminosilicate Ion Source Using a 1 Micron Laser

The heavy ion fusion (HIF) program is interested in developing a high brightness ion source for high energy density physics (HEDP) experiments. One possible approach to obtaining higher brightness may be to raise the surface temperature of the ion source just prior to extraction. The current ion source material being studied is a layer of potassium-doped aluminosilicate bonded to a tungsten substrate. It is speculated that if the surface temperature of the source is raised above 1200 C (from a steady-state temperature of 900 C) for time periods on the order of 100's of nanoseconds, current densities of greater than 100 mA/cm{sup 2} of ions may be achievable. Typical aluminosilicate sources produce ion current densities (either K+ or Na+ ions) of {approx}10 mA/cm{sup 2} (at 1100 C). A number of heating methods might be possible, including lasers, diode arrays, and flash lamps. Here we assume laser heating. In this preliminary study, we used the LLNL RadHeat code to model the time-temperature history of the surface when hit by laser pulses and illustrate how RadHeat can be used to optimize the surface temperature response. Also of interest is the temperature history of the interface temperature between the ceramic and the metal …
Date: December 14, 2004
Creator: Schmitt, R. C.; Meier, W. R.; Kwan, J. W.; Abbott, R. P. & Latkowski, J. F.
System: The UNT Digital Library
Position Ring System using Anger Type Detectors (open access)

Position Ring System using Anger Type Detectors

The overall objective of our project was to develop PET scanners and imaging techniques that achieve high performance and excellent image quality. Our approach was based upon 3-D imaging (no septa) with position-sensitive Anger-logic detectors, whereby the encoding ratio of resolution elements to number of photo-multiplier tube channels is very high. This design led to a series of PET systems that emphasized cost-effectiveness and practicality in a clinical environment.
Date: December 14, 2004
Creator: Joel S. Karp, principal investigator
System: The UNT Digital Library
Assessing Terrorist Motivations for Attacking Critical "Chemical" Infrastructure (open access)

Assessing Terrorist Motivations for Attacking Critical "Chemical" Infrastructure

Certain types of infrastructure--critical infrastructure (CI)--play vital roles in underpinning our economy, security, and way of life. One particular type of CI--that relating to chemicals--constitutes both an important element of our nation's infrastructure and a particularly attractive set of potential targets. This is primarily because of the large quantities of toxic industrial chemicals (TICs) it employs in various operations and because of the essential economic functions it serves. This study attempts to minimize some of the ambiguities that presently impede chemical infrastructure threat assessments by providing new insight into the key motivational factors that affect terrorist organizations propensity to attack chemical facilities. Prepared as a companion piece to the Center for Nonproliferation Studies August 2004 study--''Assessing Terrorist Motivations for Attacking Critical Infrastructure''--it investigates three overarching research questions: (1) why do terrorists choose to attack chemical-related infrastructure over other targets; (2) what specific factors influence their target selection decisions concerning chemical facilities; and (3) which, if any, types of groups are most inclined to attack chemical infrastructure targets? The study involved a multi-pronged research design, which made use of four discrete investigative techniques to answer the above questions as comprehensively as possible. These include: (1) a review of terrorism and threat …
Date: December 14, 2004
Creator: Ackerman, G.; Bale, J. & Moran, K.
System: The UNT Digital Library
Incorporation of Integral Fuel Burnable Absorbers Boron and Gadolinium into Zirconium-Alloy Fuel Clad Material (open access)

Incorporation of Integral Fuel Burnable Absorbers Boron and Gadolinium into Zirconium-Alloy Fuel Clad Material

Long-lived fuels require the use of higher enrichments of 235U or other fissile materials. Such high levels of fissile material lead to excessive fuel activity at the beginning of life. To counteract this excessive activity, integral fuel burnable absorbers (IFBA) are added to some rods in the fuel assembly. The two commonly used IFBA elements are gadolinium, which is added as gadolinium-oxide to the UO2 powder, and boron, which is applied as a zirconium-diboride coating on the UO2 pellets using plasma spraying or chemical vapor deposition techniques. The incorporation of IFBA into the fuel has to be performed in a nuclear-regulated facility that is physically separated from the main plant. These operations tend to be very costly because of their small volume and can add from 20 to 30% to the manufacturing cost of the fuel. Other manufacturing issues that impact cost and performance are maintaining the correct levels of dosing, the reduction in fuel melting point due to gadolinium-oxide additions, and parasitic neutron absorption at fuel's end-of-life. The goal of the proposed research is to develop an alternative approach that involves incorporation of boron or gadolinium into the outer surface of the fuel cladding material rather than as an …
Date: December 14, 2004
Creator: Sridharan, K.; Renk, T.J.; Lahoda, E.J. & Corradini, M.L
System: The UNT Digital Library
Retention/Diffusivity Studies in Free-Surface Flowing Liquid Lithium (open access)

Retention/Diffusivity Studies in Free-Surface Flowing Liquid Lithium

FLIRE was designed to measure the hydrogen and helium retention and diffusivity in a flowing stream of liquid lithium, and it has accomplished these goals. Retention coefficients for helium in the flowing liquid stream were 0.1-2% for flow speeds of 44 cm/s and implantation energies between 500 and 2000 eV. The energy dependence of retention is linear for the energy range considered, as expected, and the dependence of retention on flow velocity fits the expected square-root of flow speed dependence. Estimates of the helium diffusion coefficient in the flowing lithium stream were {approx} 4 x 10{sup -7} cm{sup 2}/s, and are independent of implantation energy. This value is much lower than expected, which could be due to several factors, such as mixing, bubble formation or surface film formation. In the case of hydrogen, long term retention and release mechanisms are of greatest importance, since this relates to tritium inventory in flowing lithium PFCs for fusion applications. The amount of hydride formation was measured for flowing lithium exposed to neutral deuterium gas. Thermal desorption spectroscopy (TDS) measurements indicate that the hydride concentration was between 0.1 and 0.2% over a wide range of pressures (6.5 x 10{sup -5} to 1 Torr). This …
Date: December 14, 2004
Creator: Stubbers, R. A.; Miley, G. H.; Nieto, M.; Olczak, W.; Ruzic, D. N. & Hassanein, A.
System: The UNT Digital Library
National Alliance of Clean Energy Incubator Activities - Final Technical Report (open access)

National Alliance of Clean Energy Incubator Activities - Final Technical Report

Summary of activity related to development of the Alliance of Clean Energy Business Incubators and incubation services provided to the clean energy sector by the Advanced Technology Development Center at the Georgia Institute of Technology.
Date: December 14, 2004
Creator: Chris Downing, P.E.
System: The UNT Digital Library
GAP Final Technical Report 12-14-04 (open access)

GAP Final Technical Report 12-14-04

The Genomics Annotation Platform (GAP) was designed to develop new tools for high throughput functional annotation and characterization of protein sequences and structures resulting from genomics and structural proteomics, benchmarking and application of those tools. Furthermore, this platform integrated the genomic scale sequence and structural analysis and prediction tools with the advanced structure prediction and bioinformatics environment of ICM. The development of GAP was primarily oriented towards the annotation of new biomolecular structures using both structural and sequence data. Even though the amount of protein X-ray crystal data is growing exponentially, the volume of sequence data is growing even more rapidly. This trend was exploited by leveraging the wealth of sequence data to provide functional annotation for protein structures. The additional information provided by GAP is expected to assist the majority of the commercial users of ICM, who are involved in drug discovery, in identifying promising drug targets as well in devising strategies for the rational design of therapeutics directed at the protein of interest. The GAP also provided valuable tools for biochemistry education, and structural genomics centers. In addition, GAP incorporates many novel prediction and analysis methods not available in other molecular modeling packages. This development led to signing …
Date: December 14, 2004
Creator: Andrew J. Bordner, PhD, Senior Research Scientist
System: The UNT Digital Library
Detailed Measurements of Turbulent Rayleigh-Taylor Mixing at Large and Small Atwood Numbers (open access)

Detailed Measurements of Turbulent Rayleigh-Taylor Mixing at Large and Small Atwood Numbers

This project has two major tasks: Task 1. The construction of a new air/helium facility to collect detailed measurements of Rayleigh-Taylor (RT) mixing at high Atwood number, and the distribution of these data to LLNL, LANL, and Alliance members for code validation and design purposes. Task 2. The collection of initial condition data from the new Air/Helium facility, for use with validation of RT simulation codes at LLNL and LANL. Also, studies of multi-layer mixing with the existing water channel facility. Over the last twelve (12) months there has been excellent progress, detailed in this report, with both tasks. As of December 10, 2004, the air/helium facility is now complete and extensive testing and validation of diagnostics has been performed. Currently experiments with air/helium up to Atwood numbers of 0.25 (the maximum is 0.75, but the highest Reynolds numbers are at 0.25) are being performed. The progress matches the project plan, as does the budget, and we expect this to continue for 2005. With interest expressed from LLNL we have continued with initial condition studies using the water channel. This work has also progressed well, with one of the graduate Research Assistants (Mr. Nick Mueschke) visiting LLNL the past two …
Date: December 14, 2004
Creator: Malcolm J. Andrews, Ph.D.
System: The UNT Digital Library
Record of Technical Change for CAU 5 Landfills, Nevada Test Site, Nevada (open access)

Record of Technical Change for CAU 5 Landfills, Nevada Test Site, Nevada

Record of Technical Change for Corrective Action Plan for Corrective Action Unit 5: Landfills, Nevada Test Site, Nevada (DOE/NV--986, July 2004).
Date: December 14, 2004
Creator: U.S. Department of Energy, National Nuclear Security Administration, Nevada Site Office
System: The UNT Digital Library
Top physics: search for anomalous kinematics in t anti-t dilepton events at cdf ii (open access)

Top physics: search for anomalous kinematics in t anti-t dilepton events at cdf ii

We report on a search for anomalous kinematics of t{bar t} dilepton events in p{bar p} collisions at {radical}s = 1.96 TeV using 193 pb{sup -1} of data collected with the CDF II detector. We developed a new a priori technique designed to isolate the subset in a data sample revealing the largest deviation from standard model (SM) expectations and to quantify the significance of this departure. In the four-variable space considered, no particular subset shows a significant discrepancy and we find that the probability of obtaining a data sample less consistent with the SM than what is observed is 1.0-4.5%.
Date: December 14, 2004
Creator: Acosta, D.
System: The UNT Digital Library
Ultrasonic Examination of Double-Shell Tank 241-AP-106. Examination Completed November 2004 (open access)

Ultrasonic Examination of Double-Shell Tank 241-AP-106. Examination Completed November 2004

COGEMA Engineering Corporation (COGEMA), under a contract from CH2M Hill Hanford Group (CH2M Hill), has performed an ultrasonic nondestructive examination of selected portions of Double-Shell Tank 241-AP-106. The purpose of this examination was to provide information that could be used to evaluate the integrity of the wall of the primary tank. The requirements for the ultrasonic examination of Tank 241-AP-106 were to detect, characterize (identify, size, and locate), and record measurements made of any wall thinning, pitting, or cracks that might be present in the wall of the primary tank. Any measurements that exceed the requirements set forth in the Engineering Task Plan (ETP), RPP-22571 (Jensen 2004) and summarized on page 1 of this document, are reported to CH2M Hill and the Pacific Northwest National Laboratory (PNNL) for further evaluation. Under the contract with CH2M Hill, all data is to be recorded on disk and paper copies of all measurements are provided to PNNL for third-party evaluation. PNNL is responsible for preparing a report that describes the results of the COGEMA ultrasonic examinations.
Date: December 14, 2004
Creator: Pardini, Allan F. & Posakony, Gerald J.
System: The UNT Digital Library
Authorization and Appropriations for FY2005: Defense (open access)

Authorization and Appropriations for FY2005: Defense

This report is a guide to one of the 13 regular appropriations bills that Congress considers each year. It is designed to supplement the information provided by the House and Senate Appropriations Subcommittees on Defense. It summarizes the status of the bill, its scope, major issues, funding levels, and related congressional activity.
Date: December 14, 2004
Creator: Daggett, Stephen
System: The UNT Digital Library
Crime and Forfeiture (open access)

Crime and Forfeiture

This report provides information about Crime and Forfeiture. Forfeiture has been an effective law enforcement tool. Modern Forfeiture follows one of the two procedural routes.
Date: December 14, 2004
Creator: Doyle, Charles
System: The UNT Digital Library
Public Safety, Interoperability and the Transition to Digital Television (open access)

Public Safety, Interoperability and the Transition to Digital Television

None
Date: December 14, 2004
Creator: unknown
System: The UNT Digital Library
Natural Resources: Selected Issues for the 109th Congress (open access)

Natural Resources: Selected Issues for the 109th Congress

None
Date: December 14, 2004
Creator: unknown
System: The UNT Digital Library
Civil Charges in Corporate Scandals (open access)

Civil Charges in Corporate Scandals

This report is on Civil Charges in Corporate Scandals.
Date: December 14, 2004
Creator: Jickling, Mark
System: The UNT Digital Library
Election of the President and Vice President by Congress: Contingent Election (open access)

Election of the President and Vice President by Congress: Contingent Election

The 12th Amdendment to the Constitution requires that candidates for President and Vice President receive a majority of electoral votes to be elected. If no candidate receives a majority, the President is elected by the House of Representatives (which occurred once, in 1825), and the Vice President is elected by the Senate (which also occurred once, in 1837). This process is known as contingent election. This report contains information on the 12th Amendment Constitutional History, previous contingent elections, the 20th Amendment and the Presidential Succession Act of 1947, and related information.
Date: December 14, 2004
Creator: Neale, Thomas H.
System: The UNT Digital Library
A Generalized Fast Frequency Sweep Algorithm for Coupled Circuit-EM Simulations (open access)

A Generalized Fast Frequency Sweep Algorithm for Coupled Circuit-EM Simulations

An Asymptotic Wave Expansion (AWE) technique is implemented into the EIGER computational electromagnetics code. The AWE fast frequency sweep is formed by separating the components of the integral equations by frequency dependence, then using this information to find a rational function approximation of the results. The standard AWE method is generalized to work for several integral equations, including the EFIE for conductors and the PMCHWT for dielectrics. The method is also expanded to work for two types of coupled circuit-EM problems as well as lumped load circuit elements. After a simple bisecting adaptive sweep algorithm is developed, dramatic speed improvements are seen for several example problems.
Date: December 14, 2004
Creator: Ouyang, G.; Jandhyala, V.; Champagne, N.; Sharpe, R.; Fasenfest, B. J. & Rockway, J. D.
System: The UNT Digital Library
Induced Polarization with Electromagnetic Coupling: 3D Spectral Imaging Theory, EMSP Project No. 73836 (open access)

Induced Polarization with Electromagnetic Coupling: 3D Spectral Imaging Theory, EMSP Project No. 73836

This project was designed as a broad foundational study of spectral induced polarization (SIP) for characterization of contaminated sites. It encompassed laboratory studies of the effects of chemistry on induced polarization, development of 3D forward modeling and inversion codes, and investigations of inductive and capacitive coupling problems. In the laboratory part of the project a physico-chemical model developed in this project was used to invert laboratory IP spectra for the grain size and the effective grain size distribution of the sedimentary rocks as well as the formation factor, porosity, specific surface area, and the apparent fractal dimension. Furthermore, it was established that the IP response changed with the solution chemistry, the concentration of a given solution chemistry, valence of the constituent ions, and ionic radius. In the field part of the project, a 3D complex forward and inverse model was developed. It was used to process data acquired at two frequencies (1/16 Hz and 1/ 4Hz) in a cross-borehole configuration at the A-14 outfall area of the Savannah River Site (SRS) during March 2003 and June 2004. The chosen SRS site was contaminated with Tetrachloroethylene (TCE) and Trichloroethylene (PCE) that were disposed in this area for several decades till the …
Date: December 14, 2004
Creator: Morgan, F. Dale & Sogade, John
System: The UNT Digital Library
Global Hybrid Simulations of Energetic Particle-driven Modes in Toroidal Plasmas (open access)

Global Hybrid Simulations of Energetic Particle-driven Modes in Toroidal Plasmas

Global hybrid simulations of energetic particle-driven MHD modes have been carried out for tokamaks and spherical tokamaks using the hybrid code M3D. The numerical results for the National Spherical Tokamak Experiments (NSTX) show that Toroidal Alfven Eigenmodes are excited by beam ions with their frequencies consistent with the experimental observations. Nonlinear simulations indicate that the n=2 mode frequency chirps down as the mode moves out radially. For ITER, it is shown that the alpha-particle effects are strongly stabilizing for internal kink mode when central safety factor q(0) is sufficiently close to unity. However, the elongation of ITER plasma shape reduces the stabilization significantly.
Date: December 14, 2004
Creator: Fu, G. Y.; Breslau, J.; Fredrickson, E.; Park, W. & Strauss, H. R.
System: The UNT Digital Library