Highway and Transit Program Reauthorization Legislation in the 2nd Session, 108th Congress (open access)

Highway and Transit Program Reauthorization Legislation in the 2nd Session, 108th Congress

This report discusses significant legislative provisions in the two principal bills that are likely to be the subject of congressional discussion in the coming weeks and months to reauthorize federal highway, highway safety, and transit programs.
Date: February 26, 2004
Creator: Fischer, John W.
Object Type: Report
System: The UNT Digital Library
Telecommunications: GSA Faces Challenges in Planning for New Governmentwide Program (open access)

Telecommunications: GSA Faces Challenges in Planning for New Governmentwide Program

Testimony issued by the General Accounting Office with an abstract that begins "The Genera1 Services Administration (GSA) has initiated planning for its next-generation telecommunications acquisition program, known as Networx, which will replace the current Federal Telecommunications System (FTS) 2001 for longdistance and international services. It will also replace contracts for wireless and satellite communications products and services. Planning for this acquisition is occurring within an environment of tremendous change--in the industry, in underlying services and technology, and potentially in the regulatory environment. In this context, Networx can offer a significant opportunity for the federal government to flexibly acquire telecommunications services at competitive rates and apply innovative solutions to improving agency operations. At the request of the Chairman of the House Committee on Government Reform, GAO is providing an overview of acquisition planning steps completed to date, along with its assessment of challenges facing GSA and federal agencies as this acquisition proceeds."
Date: February 26, 2004
Creator: United States. General Accounting Office.
Object Type: Text
System: The UNT Digital Library
Missile Defense: Actions Being Taken to Address Testing Recommendations, but Updated Assessment Needed (open access)

Missile Defense: Actions Being Taken to Address Testing Recommendations, but Updated Assessment Needed

A letter report issued by the General Accounting Office with an abstract that begins "In August 2000, the Defense Department's (DOD) Director, Operational Test and Evaluation (DOT&E), made 50 recommendations on a test program for a system to defeat long-range ballistic missile threats against the United States. DOD's Missile Defense Agency (MDA) plans to begin fielding the system by September 2004. GAO examined (1) how MDA addressed DOT&E's recommendations and (2) what is known about the effectiveness of the system to be fielded by September 2004. GAO issued a classified report on this subject in June 2003. This unclassified, updated version reflects changes in MDA's test schedule."
Date: February 26, 2004
Creator: United States. General Accounting Office.
Object Type: Report
System: The UNT Digital Library
Distance Education: Improved Data on Program Costs and Guidelines on Quality Assessments Needed to Inform Federal Policy (open access)

Distance Education: Improved Data on Program Costs and Guidelines on Quality Assessments Needed to Inform Federal Policy

A letter report issued by the General Accounting Office with an abstract that begins "Distance education--that is, offering courses by Internet, video, or other forms outside the classroom--has changed considerably in recent years and is a growing force in postsecondary education. More than a decade ago, concerns about fraud and abuse by some correspondence schools led to federal restrictions on, among other things, the percentage of courses a school could provide by distance education and still qualify for federal student aid. Given the recent changes in distance education, GAO was asked to review the extent to which the restrictions affect schools' ability to offer federal student aid and the Department of Education's assessment of the continued appropriateness of the restrictions. Additionally, GAO was asked to look at the extent to which accrediting agencies evaluate distance education programs, including their approach for assessing student outcomes."
Date: February 26, 2004
Creator: United States. General Accounting Office.
Object Type: Report
System: The UNT Digital Library
Homeland Security Advisory System: Preliminary Observations Regarding Threat Level Increases from Yellow to Orange (open access)

Homeland Security Advisory System: Preliminary Observations Regarding Threat Level Increases from Yellow to Orange

Correspondence issued by the General Accounting Office with an abstract that begins "Established in March 2002, the Homeland Security Advisory System was designed to disseminate information regarding the risk of terrorist acts to federal, state, and local government agencies and the public. However, this system generated concern among federal, state, and local government agencies regarding whether they are receiving the necessary information to respond appropriately to heightened alerts and about the amount of additional costs protective measures entail. Congress requested that we review (1) the operations of the Homeland Security Advisory System, including the decision making process for changing the national threat level, notifications to federal, state, and local government agencies of changes in the threat level, and ongoing revisions to the system; (2) guidance and information that federal, state, and local government agencies reportedly used to determine any protective measures to implement when the threat level is raised to high--or code-orange--alert; (3) any protective measures these agencies implemented during code-orange alert periods; (4) any additional costs these agencies reported incurring to implement such measures; and (5) any threat advisory systems that federal, state, or local government agencies had in place before the creation of the Homeland Security Advisory System."
Date: February 26, 2004
Creator: United States. General Accounting Office.
Object Type: Text
System: The UNT Digital Library
U.S. International Broadcasting: Enhanced Measure of Local Media Conditions Would Facililate Decisions to Terminate Language Services (open access)

U.S. International Broadcasting: Enhanced Measure of Local Media Conditions Would Facililate Decisions to Terminate Language Services

A letter report issued by the General Accounting Office with an abstract that begins "In its fiscal year 2004 budget request to Congress, the Broadcasting Board of Governors (the Board) proposed the elimination of 17 Central and Eastern European language services managed by the Voice of America and Radio Free Europe/Radio Liberty (RFE/RL) in order to free resources for higher-priority initiatives such as the war on terrorism. GAO was asked to examine (1) how the Board determines which language services should be proposed for reduction or termination and (2) the extent to which local media conditions are considered before a termination proposal is made. In addition, GAO's report provides summary analysis and conclusions relating to the media conditions in three countries impacted by the Board's language service termination decisions."
Date: February 26, 2004
Creator: United States. General Accounting Office.
Object Type: Report
System: The UNT Digital Library
Mandatory Audit Firm Rotation Study: Study Questionnaires, Responses, and Summary of Respondents' Comments (open access)

Mandatory Audit Firm Rotation Study: Study Questionnaires, Responses, and Summary of Respondents' Comments

A letter report issued by the General Accounting Office with an abstract that begins "The Sarbanes-Oxley Act of 2002 required GAO to study the potential effects of requiring public companies registered with the Securities and Exchange Commission (SEC) to periodically rotate the public accounting firms that audit their financial statements. On November 21, 2003, GAO issued its report entitled Public Accounting Firms: Required Study on the Potential Effects of Mandatory Audit Firm Rotation (GAO-04-216). This supplemental report contains a copy of each questionnaire used in our study, annotated to show summary responses for each question and selected comments from respondents. GAO is issuing this supplemental report to provide additional detail on the responses to our surveys on the potential effects of mandatory audit firm rotation and to facilitate future research efforts in performing studies related to these matters."
Date: February 26, 2004
Creator: United States. General Accounting Office.
Object Type: Report
System: The UNT Digital Library
Heavy flavor production at the Tevatron (open access)

Heavy flavor production at the Tevatron

Using a subset of the current Run II data, the CDF and D0 have performed several measurements on heavy flavor production. In this paper, we present a new measurement of prompt charm meson production by CDF. We also report the latest CDF II measurements of inclusive J/{Psi} production and b-production without requirement of minimum transverse momentum on J/{Psi} and b-quark. They are the first measurements of the total inclusive J/{Psi} and b quark cross section in the central rapidity region at a hadron collider. The results of J/{Psi} cross section as a function of rapidity, and b-jet production cross section measured by D0 are also reviewed.
Date: February 26, 2004
Creator: Chen, Chunhui
Object Type: Article
System: The UNT Digital Library
Neptunium Disposal to the Savannah River Site Tank Farm (open access)

Neptunium Disposal to the Savannah River Site Tank Farm

Researchers investigated the neutralization of an acidic neptunium solution from a Savannah River Site (SRS) processing canyon and the properties of the resulting slurry to determine the feasibility of disposal in the SRS tank farm. The acidic solution displayed no properties that precluded the proposed disposal route. Neutralization of the acidic neptunium forms a 4 wt per cent slurry of precipitated metal hydroxides. The insoluble solids consist largely of iron (92 per cent) and neptunium hydroxides (2 per cent). The concentration of soluble neptunium remaining after neutralization equaled much less than previous solubility measurements predicted. Researchers used an apparatus similar to an Ostwald-type viscometer to estimate the consistency of the neptunium slurry with the solids present. The yield stress and consistency of the 4 wt per cent slurry will allow transfer through the tank farm, although concentration of the insoluble solids above 4 wt per cent may cause significant problems due to increased consistency and yield stress. The consistency of the 4 wt per cent slurry is 7.6 centipoise (cP) with a yield stress less than 1 Pascal (Pa). The neptunium slurry, when combined with actual washed radioactive sludge, slightly reduces the yield stress and consistency of the sludge and …
Date: February 26, 2004
Creator: Walker, D. D.
Object Type: Article
System: The UNT Digital Library
Ground Control for Non-Emplacement Drifts for LA (open access)

Ground Control for Non-Emplacement Drifts for LA

The purpose of this calculation is to analyze the stability of repository non-emplacement drifts during the preclosure period, and to provide a final ground support method for non-emplacement drifts for the License Application (LA). This calculation will provide input for the development of LA documents. The scope of this calculation is limited to the non-emplacement drifts including access mains, ramps, exhaust mains, turnouts, intersections between access mains and turnouts, and intersections between exhaust mains and emplacement drifts, portals, TBM launch chambers, observation drift and test alcove in the performance confirmation (PC) facilities, etc. The calculation is limited to the non-emplacement drifts subjected to a combined loading of in-situ stress, seismic stress, and/or thermal stress. Other effects such as hydrological and chemical effects are not considered in this analysis.
Date: February 26, 2004
Creator: Tang, D.
Object Type: Report
System: The UNT Digital Library
White paper report on using nuclear reactors to search for a value of theta13 (open access)

White paper report on using nuclear reactors to search for a value of theta13

There has been superb progress in understanding the neutrino sector of elementary particle physics in the past few years. It is now widely recognized that the possibility exists for a rich program of measuring CP violation and matter effects in future accelerator {nu} experiments, which has led to intense efforts to consider new programs at neutrino superbeams, off-axis detectors, neutrino factories and beta beams. However, the possibility of measuring CP violation can be fulfilled only if the value of the neutrino mixing parameter {theta}{sub 13} is such that sin{sup 2} (2{theta}{sub 13}) greater than or equal to on the order of 0.01. The authors of this white paper are an International Working Group of physicists who believe that a timely new experiment at a nuclear reactor sensitive to the neutrino mixing parameter {theta}{sub 13} in this range has a great opportunity for an exciting discovery, a non-zero value to {theta}{sub 13}. This would be a compelling next step of this program. We are studying possible new reactor experiments at a variety of sites around the world, and we have collaborated to prepare this document to advocate this idea and describe some of the issues that are involved.
Date: February 26, 2004
Creator: Anderson, K.; Anjos, J. C.; Ayres, D.; Beacom, J.; Bediaga, I.; de Bellefon, A. et al.
Object Type: Report
System: The UNT Digital Library
Multiple Ion Exchange Column Runs for Cesium and Technetium Removal from AW-101 Waste Sample (open access)

Multiple Ion Exchange Column Runs for Cesium and Technetium Removal from AW-101 Waste Sample

The River Protection Project -Waste Treatment Plant (RPP-WTP) will be performing cesium removal from Hanford tank waste supernatants using SuperLig 644 resin. These elutable resins will be used multiple times to process large volumes of radioactive waste samples and will be subjected to chemical and radiation degradation during use at the waste treatment plant (WTP). The RPP-WTP process design assumes that resin batches can be used a minimum of 10 cycles before the resin must be replaced due to degradation. The effects of radiation and chemical degradation on SuperLig 644 and 639 resins were separately studied in the past under static conditions, i.e., in contact with air, water, and simulated waste solutions. To determine the chemical degradation effects under dynamic or column conditions, Battelle, Pacific Northwest National Laboratory (PNNL), and IBC Advanced Technologies conducted multiple load/elute/regenerate cycles with simulated Hanford waste samples. Savannah River Technology Center (SRTC) was contracted to demonstrate the performance of SuperLig 644 and 639 resins to treat repetitively radioactive waste solutions. Six cycles of loading, elution, and regeneration were performed to remove cesium from a Hanford waste sample. Five load/elute/regenerate cycles were carried out to remove technetium from cesium-depleted effluent solutions. The multiple load/elute/regenerate cycles demonstrated …
Date: February 26, 2004
Creator: Hassan, N. M.
Object Type: Report
System: The UNT Digital Library
Head Start Issues in the 108th Congress (open access)

Head Start Issues in the 108th Congress

This report provides Head Start issues on the 108th congress, a federal program that has provided comprehensive early childhood development services to low-income children since 1965.
Date: February 26, 2004
Creator: Melinda, Gish
Object Type: Report
System: The UNT Digital Library
Grazing Regulations and Policies: Changes by the Bureau of Land Management (open access)

Grazing Regulations and Policies: Changes by the Bureau of Land Management

This report provides the regulations and policies and changes by the Bureau of Land Management.
Date: February 26, 2004
Creator: Vincent, Carol Hardy
Object Type: Report
System: The UNT Digital Library
Indonesian Separatist Movement in Aceh (open access)

Indonesian Separatist Movement in Aceh

None
Date: February 26, 2004
Creator: unknown
Object Type: Report
System: The UNT Digital Library
Identifying Oil Exploration Leads using Intergrated Remote Sensing and Seismic Data Analysis, Lake Sakakawea, Fort Berthold Indian Reservation, Willistion Basin (open access)

Identifying Oil Exploration Leads using Intergrated Remote Sensing and Seismic Data Analysis, Lake Sakakawea, Fort Berthold Indian Reservation, Willistion Basin

The Fort Berthold Indian Reservation, inhabited by the Arikara, Mandan and Hidatsa Tribes (now united to form the Three Affiliated Tribes) covers a total area of 1530 mi{sup 2} (980,000 acres). The Reservation is located approximately 15 miles east of the depocenter of the Williston basin, and to the southeast of a major structural feature and petroleum producing province, the Nesson anticline. Several published studies document the widespread existence of mature source rocks, favorable reservoir/caprock combinations, and production throughout the Reservation and surrounding areas indicating high potential for undiscovered oil and gas resources. This technical assessment was performed to better define the oil exploration opportunity, and stimulate exploration and development activities for the benefit of the Tribes. The need for this assessment is underscored by the fact that, despite its considerable potential, there is currently no meaningful production on the Reservation, and only 2% of it is currently leased. Of particular interest (and the focus of this study) is the area under the Lake Sakakawea (formed as result of the Garrison Dam). This 'reservoir taking' area, which has never been drilled, encompasses an area of 150,000 acres, and represents the largest contiguous acreage block under control of the Tribes. Furthermore, …
Date: February 26, 2004
Creator: Reeves, Scott R. & Billingsley, Randal L.
Object Type: Report
System: The UNT Digital Library
San Juan single-well seismic data analysis and modeling study (open access)

San Juan single-well seismic data analysis and modeling study

The authors analyze single-well seismic data from the San Juan basin in Northwest New Mexico. The consistently observable events are tube-waves: direct, reflected and multiple tube-waves can be explained by the formation properties and survey geometry except for an anomalous zone with low velocity, high amplitude and horizontal polarization. To aid the data analysis, forward modeling using a variable-grid finite-difference parallel code is performed. The numerical result confirms the identified events in the field observations.
Date: February 26, 2004
Creator: Daley, Tom; Wu, C.; Harris, J. M.; Daley, T. M. & Majer, E. L.
Object Type: Article
System: The UNT Digital Library
Development and Demonstration of Insulated Pressure Vessels for Vehicular Hydrogen Storage (open access)

Development and Demonstration of Insulated Pressure Vessels for Vehicular Hydrogen Storage

This paper describes the development of an alternative technology for vehicular storage of hydrogen. Insulated pressure vessels are cryogenic-capable pressure vessels that can accept cryogenic liquid fuel, cryogenic compressed gas or compressed gas at ambient temperature. Insulated pressure vessels offer advantages over alternative hydrogen storage technologies. Insulated pressure vessels are more compact and less expensive than compressed hydrogen vessels. They have lower evaporative losses and lower energy requirement for fuel liquefaction than liquid hydrogen tanks, and they are lighter than hydrides. The work described in this paper is directed at verifying that insulated pressure vessels can be used safely for vehicular hydrogen storage. The paper describes multiple tests and analyses that have been conducted to evaluate the safety of insulated pressure vessels. Insulated pressure vessels have been subjected to multiple DOT, ISO and SAE certification tests, and the vessels have always been successful in meeting the passing criteria for the different tests. A draft procedure for insulated pressure vessel certification has been generated to assist in a future commercialization of this technology. Ongoing work includes the demonstration of this technology in a vehicle.
Date: February 26, 2004
Creator: Berry, G D & Aceves, S M
Object Type: Article
System: The UNT Digital Library
A Comparison of Measured and Calculated Gamma Ray Attenuation for a Common Counting Geometry (open access)

A Comparison of Measured and Calculated Gamma Ray Attenuation for a Common Counting Geometry

In order to perform quantitative gamma spectroscopy, it is necessary to know the sample-specific detection efficiency for photons as a function of energy. The detection efficiency, along with the branching ratio for the isotope and gamma ray of interest, is used to convert observed counts/second to actual disintegrations/second, and, hence, has a large effect on the accuracy of the measurement. In cases where the geometry of the source is simple and reproducible, such as a point source, small vial of solid, or jar of liquid, geometry-specific standards may be counted to determine the detection efficiency. In cases where the samples are large, irregular, or unique, this method generally cannot be used. For example, it is impossible to obtain a NIST-traceable standard glovebox or 55-gallon drum. In these cases, a combination of measured absolute detector efficiency and calculated sample-specific correction factors is commonly used. The correction factors may be calculated via Monte Carlo simulation of the item (the method used by Canberra's ISOCS system), or via semi-empirical calculation of matrix and container attenuations based on the thickness and composition of the container and radioactive matrix (ISOTOPIC by EG&G Ortec uses this method). The accuracy of these correction factors for specific geometries …
Date: February 26, 2004
Creator: Gaylord, R. F.
Object Type: Report
System: The UNT Digital Library
Permeability Enhancement in Fine-Grained Sediments by Chemically Induced Clay Fabric Shrinkage (open access)

Permeability Enhancement in Fine-Grained Sediments by Chemically Induced Clay Fabric Shrinkage

The National Research Council [1] identified the entrapment of contaminants in fine-grained clay-bearing soils as a major impediment to the timely and cost-effective remediation of groundwater to regulatory standards. Contaminants trapped in low-permeability, low-diffusivity, high-sorptivity clays are not accessible to advective flushing by treatment fluids from permeable zones, and slowly diffuse out to recontaminate previously cleaned permeable strata. We propose to overcome this barrier to effective remediation by exploiting the ability of certain nontoxic EPA-approved chemicals (e.g., ethanol) to shrink and alter the fabric of clays, and thereby create macro-porosity and crack networks in fine-grained sediments. This would significantly reduce the distance and time scales of diffusive mass transport to advectively flushed boundaries, to yield orders of magnitude reduction in the time required to complete remediation. Given that effective solutions to this central problem of subsurface remediation do not yet exist, the cost and time benefits of successful deployment of this novel concept, both as a stand-alone technology and as an enabling pre-treatment for other remedial technologies that rely on advective delivery, is likely to be very large. This project, funded as a 1-year feasibility study by LLNL's LDRD Program, is a multi-directorate, multi-disciplinary effort that leverages expertise from the …
Date: February 26, 2004
Creator: Wijesinghe, A. M.; Kansa, E. J.; Viani, B. E.; Blake, R. G.; Roberts, J. J. & Huber, R. D.
Object Type: Report
System: The UNT Digital Library
Spectroscopic Confirmation of A Radio-Selected Galaxy Overdensity at z = 1.11 (open access)

Spectroscopic Confirmation of A Radio-Selected Galaxy Overdensity at z = 1.11

We report the discovery of a galaxy overdensity at z = 1.11 associated with the z = 1.110 high-redshift radio galaxy MG 0442+0202. The group, CL 0442+0202, was found in a near-infrared survey of z > 1 radio galaxies undertaken to identify spatially-coincident regions with a high density of objects red in I - K' color, typical of z > 1 elliptical galaxies. Spectroscopic observations from the Keck I telescope reveal five galaxies within 35'' of MG 0442+0202 at 1.10 < z < 1.11. These member galaxies have broad-band colors and optical spectra consistent with passively-evolving elliptical galaxies formed at high redshift. Archival ROSAT observations reveal a 3{sigma} detection of soft X-ray emission coincident with CL 0442+0202 at a level five times greater than expected for the radio galaxy. These data are suggestive of a rich galaxy cluster and inspired a 45 ks Chandra X-Ray Observatory observation. As expected, the radio galaxy is unresolved to Chandra, but is responsible for approximately half of the observed X-ray flux. The remaining ROSAT flux is resolved into four point sources within 15'' of the radio galaxy, corresponding to a surface density two orders of magnitude higher than average for X-ray sources at these …
Date: February 26, 2004
Creator: Stanford, S; Stern, D; Holden, B & Spinrad, H
Object Type: Article
System: The UNT Digital Library
Study of High Mach Number Laser Driven Blast Waves (open access)

Study of High Mach Number Laser Driven Blast Waves

The study of blast waves produced by intense lasers in gases is motivated by the desire to explore astrophysically relevant hydrodynamic phenomena in the laboratory. We have performed a systematic scan of laser produced blast waves and have examined the blast wave structure over a wide range of drive laser energy. Lasers with energies ranging from 10J-1000J illuminated a pin target in either xenon or nitrogen gas, creating a spherical blast wave. We observe a strongly radiating blast wave in xenon gas while blast waves in nitrogen more closely approximate a pure Taylor-Sedov wave. We also find that at all laser energies, blast waves traveling through xenon gas had their hydrodynamic evolution significantly affected by the passage of the illumination laser.
Date: February 26, 2004
Creator: Edens, A.; Ditmire, T.; Hansen, J. F.; Edwards, M. J.; Adams, R. G.; Rambo, P. et al.
Object Type: Article
System: The UNT Digital Library