Higher Education: Activities Underway to Improve Teacher Training, but Reporting on These Activities Could Be Enhanced (open access)

Higher Education: Activities Underway to Improve Teacher Training, but Reporting on These Activities Could Be Enhanced

A letter report issued by the General Accounting Office with an abstract that begins "In 1998, Congress amended the Higher Education Act (HEA) to enhance the quality of teaching in the classroom by improving training programs for prospective teachers and the qualifications of current teachers. This report focuses on two components of the legislation: one that provides grants and another, called the "accountability provisions," that requires collecting and reporting information on the quality of all teacher training programs and qualifications of current teachers."
Date: December 11, 2002
Creator: United States. General Accounting Office.
Object Type: Report
System: The UNT Digital Library
Electron cloud instabilities in the Proton Storage Ring andSpallation Neutron Source (open access)

Electron cloud instabilities in the Proton Storage Ring andSpallation Neutron Source

Electron cloud instabilities in the Los Alamos ProtonStorage Ring (PSR) and those foreseen forthe Oak Ridge SpallationNeutron Source (SNS) are examined theoretically, numerically, andexperimentally.
Date: December 11, 2002
Creator: Blaskiewicz, M.; Furman, M. A.; Pivi, M. & Macek, R. J.
Object Type: Article
System: The UNT Digital Library
Determination of Primordial Metallicity and Mixing in the Type IIP Supernova 1993W (open access)

Determination of Primordial Metallicity and Mixing in the Type IIP Supernova 1993W

We present the results of a large grid of synthetic spectra and compare them to early spectroscopic observations of SN 1993W. This supernova was discovered close to its explosion date and at a recession velocity of 5400 km/s is located in the Hubble flow. We focus here on two early spectra that were obtained approximately 5 and 9 days after explosion. We parameterize the outer supernova envelope as a power-law density profile in homologous expansion. In order to extract information on the value of the parameters a large number of models was required. We show that very early spectra combined with detailed models can provide constraints on the value of the power law index, the ratio of hydrogen to helium in the surface of the progenitor, the progenitor metallicity and the amount of radioactive nickel mixed into the outer envelope of the supernova. The spectral fits reproduce the observed spectra exceedingly well. The spectral results combined with the early photometry predict that the explosion date was 4.7 {+-} 0.7 days before the first spectrum was obtained. The ability to obtain the metallicity from early spectra make SN IIP attractive probes of chemical evolution in the universe and by showing that …
Date: December 11, 2002
Creator: Baron, E.; Nugent, Peter E.; Branch, David; Hauschildt, Peter H.; Turatto, M. & Cappellaro, E.
Object Type: Article
System: The UNT Digital Library
Beauty, charm and hyperon production at fixed-target experiments (open access)

Beauty, charm and hyperon production at fixed-target experiments

Over the years fixed-target experiments have performed numerous studies of particle production in strong interactions. The experiments have been performed with different types of beam particles of varying energies, and many different target materials. Since the physics of particle production is still not understood, ongoing research of phenomena that we observe as beauty, charm and strange-particle production is crucial if we are to gain an understanding of these fundamental processes. It is in this context that recent results from fixed-target experiments on beauty, charm, and hyperon production will be reviewed.
Date: December 11, 2002
Creator: Gottschalk, Erik
Object Type: Article
System: The UNT Digital Library
Fabrication and test of a racetrack magnet using pre-reacted Nb3Sn cable (open access)

Fabrication and test of a racetrack magnet using pre-reacted Nb3Sn cable

A racetrack magnet, using Nb{sub 3}Sn superconducting cable reacted before winding, has been fabricated and tested at Fermilab. It consists of two flat racetrack coils, connected in a common-coil configuration, separated by a 5 mm thick fiberglass plate. Synthetic oil was used to prevent sintering of the strands during the heat treatment. The coils were wound and vacuum impregnated in the mechanical structure. The turn-to-turn insulation, consisting of Kapton{reg_sign}and pre-impregnated fiberglass tapes as wide as the cable, was wound together with the bare cable in order to form a continuous inter-turn spacer. The coils were instrumented with voltage taps, temperature sensors, spot heaters and quench heaters. The maximum current achieved was 12675 A which is 78% of the short sample limit at 5.1 K (minimum temperature in the coil during 75 A/s ramp). Measurement of the temperature margin revealed a low degradation in the innermost turns. Quench performances at different temperatures and ramp rate effects have been measured and are presented and discussed.
Date: December 11, 2002
Creator: al., Giorgio Ambrosio et
Object Type: Article
System: The UNT Digital Library
Lithographic Characterization of the Printability of Programmed EUV Substrate Defects (open access)

Lithographic Characterization of the Printability of Programmed EUV Substrate Defects

None
Date: December 11, 2002
Creator: Naulleau, Patrick; Goldberg, Kenneth A.; Anderson, Erik H.; Bokor, Jeffrey; Gullikson, Eric; Harteneck, Bruce et al.
Object Type: Article
System: The UNT Digital Library
Evaluation of uncertainties due to hydrogeological modeling and groundwater flow analysis: Steady flow, transient flow, and thermal studies (open access)

Evaluation of uncertainties due to hydrogeological modeling and groundwater flow analysis: Steady flow, transient flow, and thermal studies

Starting with regional geographic, geologic, surface and subsurface hydrologic, and geophysical data for the Tono area in Gifu, Japan, we develop an effective continuum model to simulate subsurface flow and transport in a 4 km by 6 km by 3 km thick fractured granite rock mass overlain by sedimentary layers. Individual fractures are not modeled explicitly. Rather, continuum permeability and porosity distributions are assigned stochastically, based on well-test data and fracture density measurements. Lithologic layering and one major fault, the Tsukiyoshi Fault, are assigned deterministically. We conduct three different studies: (1) the so-called base case, in which the model simulates the steady-state groundwater flow through the site, and then stream trace analysis is used to calculate travel times to the model boundary from specified release points; (2) simulations of transient flow during long term pump tests (LTPT) using the base-case model; and (3) thermal studies in which coupled heat flow and fluid flow are modeled, to examine the effects of the geothermal gradient on groundwater flow. The base-case study indicates that the choice of open or closed lateral boundaries has a strong influence on the regional groundwater flow patterns produced by the models, but no field data exist that can …
Date: December 11, 2002
Creator: Doughty, Christine & Karasaki, Kenzi
Object Type: Report
System: The UNT Digital Library
Business Tax Incentives: Incentives to Employ Workers with Disabilities Receive Limited Use and Have an Uncertain Impact (open access)

Business Tax Incentives: Incentives to Employ Workers with Disabilities Receive Limited Use and Have an Uncertain Impact

A letter report issued by the General Accounting Office with an abstract that begins "More than 17 million working-age individuals have a self-reported disability that limits work. Their unemployment rate is also twice as high as for those without a work disability, according to recent Census data. In the Ticket to Work and Work Incentives Improvement Act of 1999, the Congress mandated that GAO study and report on existing tax incentives to encourage businesses to employ and accommodate workers with disabilities. This report provides information on (1) the current usage of the tax incentives, (2) the incentives' ability to encourage the hiring and retention of workers with disabilities, and (3) options to enhance awareness and usage of the incentives."
Date: December 11, 2002
Creator: United States. General Accounting Office.
Object Type: Report
System: The UNT Digital Library
Individual Fishing Quotas: Better Information Could Improve Program Management (open access)

Individual Fishing Quotas: Better Information Could Improve Program Management

A letter report issued by the General Accounting Office with an abstract that begins "To assist in deliberations on individual fishing quota (IFQ) programs, GAO determined (1) the extent of consolidation of quota holdings in three IFQ programs (Alaskan halibut and sablefish, wreckfish, and surfclam/ocean quahog); (2) the extent of foreign holdings of quota in these programs; and (3) the economic effect of the IFQ program on Alaskan halibut and sablefish processors."
Date: December 11, 2002
Creator: United States. General Accounting Office.
Object Type: Report
System: The UNT Digital Library
Highway and Transit Program Reauthorization (open access)

Highway and Transit Program Reauthorization

This report discusses significant legislative provisions in the two provisional bills that are likely to be the subject of congressional discussion to reauthorize federal highway, highway safety, and transit programs.
Date: December 11, 2002
Creator: Fischer, John W.
Object Type: Report
System: The UNT Digital Library
Thermo-mechanical characterization of insulated and epoxy-impregnated Nb3Sn composites (open access)

Thermo-mechanical characterization of insulated and epoxy-impregnated Nb3Sn composites

Nb{sub 3}Sn is, at present, the best superconductor for high field accelerator magnets. Several models using Nb{sub 3}Sn are under development in many laboratories. Knowledge of the thermo-mechanical properties of the impregnated coils is of crucial importance for the design of these magnets. In fact, the performance of epoxy-impregnated coils is sensitive to the thermal conductivity value, especially in case of heating caused by hysteretic losses, which are usually relevant in Nb{sub 3}Sn magnets, and in the case of continuous heat deposition, such as in magnets near the interaction region of a collider. Thermal contraction measurements are necessary to estimate the stresses during the magnet thermal cycle. Different insulation materials have been studied at Fermilab utilizing various design approaches and fabrication methods. Thermal conductivity and thermal contraction measurements, at cryogenic temperatures, have been performed respectively at INFN-LASA and Fermilab. The results are reported and discussed in this paper.
Date: December 11, 2002
Creator: al., Linda Imbasciati et
Object Type: Article
System: The UNT Digital Library
Immigration and Naturalization Service: Restructuring Proposals in the 107th Congress (open access)

Immigration and Naturalization Service: Restructuring Proposals in the 107th Congress

None
Date: December 11, 2002
Creator: Seghetti, Lisa M.
Object Type: Report
System: The UNT Digital Library
Department of Homeland Security: State and Local Preparedness Issues (open access)

Department of Homeland Security: State and Local Preparedness Issues

The Homeland Security Act of 2002 (P.L. 107-296) makes the new Department of Homeland Security (DHS) responsible for providing assistance to state and local governments to ensure adequate preparedness for all disasters, including terrorist attacks. Several federal entities with functions relating to state and local preparedness, ranging from entire independent agencies to units of agencies and departments, will be transferred to the new department.
Date: December 11, 2002
Creator: Canada, Ben
Object Type: Report
System: The UNT Digital Library
Palestinians and Middle East Peace: Issues for the United States (open access)

Palestinians and Middle East Peace: Issues for the United States

None
Date: December 11, 2002
Creator: Mark, Clyde R.
Object Type: Report
System: The UNT Digital Library
First Responder Initiative: Policy Issues and Options (open access)

First Responder Initiative: Policy Issues and Options

This report discusses the “First Responder Initiative,” a proposed block grant program to help state and local first responders prepare for possible terrorist attacks. Under the Administration proposal, the Federal Emergency Management Agency (FEMA) would administer the program, which, if approved, would provide $3.5 billion to states and localities.
Date: December 11, 2002
Creator: Canada, Ben
Object Type: Report
System: The UNT Digital Library
Cloture Attempts on Nominations (open access)

Cloture Attempts on Nominations

Cloture is the only means by which the Senate can vote to limit debate on a matter, and thereby overcome a possible filibuster. Until 1949, cloture could not be invoked on nominations, and before 1980 this action was attempted only twice. From 1949 through 2002, cloture was sought on 35 nominations, and invoked on 21. Only three of the 35 nominees were not confirmed; all three were among those on whom the Senate rejected cloture. Except in the 103rd Congress (1993-1994), most of the nominations involved have been judicial. The 103rd and 107th Congress are the only ones in which cloture was sought on more than three nominations.
Date: December 11, 2002
Creator: Beth, Richard S.
Object Type: Report
System: The UNT Digital Library
Drug Control: International Policy and Options (open access)

Drug Control: International Policy and Options

Over the past decade, worldwide production of illicit drugs has risen dramatically: opium and marijuana production has roughly doubled and coca production tripled. Street prices of cocaine and heroin have fallen significantly in the past 20 years, reflecting increased availability. Despite apparent national political resolve to deal with the drug problem, inherent contradictions regularly appear between U.S. anti-drug policy and other national policy goals and concerns. The mix of competing domestic and international pressures and priorities has produced an ongoing series of disputes within and between the legislative and executive branches concerning U.S. international drug policy. One contentious issue has been the Congressionally-mandated certification process, an instrument designed to induce specified drug-exporting countries to prioritize or pay more attention to the fight against narcotics businesses.
Date: December 11, 2002
Creator: Lee, Rensselaer & Perl, Raphael F.
Object Type: Report
System: The UNT Digital Library
Central Asia's New States: Political Developments and Implications for U.S. Interests (open access)

Central Asia's New States: Political Developments and Implications for U.S. Interests

After the collapse of the Soviet Union in 1991, the United States recognized the independence of all the former Central Asian republics and established diplomatic relations with each by mid-March 1992. This report provides an overview of U.S. policy concerns after the Soviet collapse. The report presents the U.S. policy attention and aid to support conflict amelioration, humanitarian needs, economic development, transport (including energy pipelines) and communications, border controls, democracy, and the creation of civil societies in the South Caucasian and Central Asian states. The United States has some economic and business interests in Central Asia, particularly in oil and natural gas development in Kazakhstan, Turkmenistan, and Uzbekistan.
Date: December 11, 2002
Creator: Nichol, Jim
Object Type: Report
System: The UNT Digital Library
Pakistan-U.S. Relations (open access)

Pakistan-U.S. Relations

None
Date: December 11, 2002
Creator: Kronstadt, K. Alan
Object Type: Report
System: The UNT Digital Library
Sudan: Humanitarian Crisis, Peace Talks, Terrorism, and U.S. Policy (open access)

Sudan: Humanitarian Crisis, Peace Talks, Terrorism, and U.S. Policy

None
Date: December 11, 2002
Creator: Dagne, Theodore S.
Object Type: Report
System: The UNT Digital Library
Asia Pacific Economic Cooperation (APEC), Free Trade, and the 2002 Summit in Mexico (open access)

Asia Pacific Economic Cooperation (APEC), Free Trade, and the 2002 Summit in Mexico

On October 26-27, 2002, the Tenth APEC Leaders’ Meeting (summit) was hosted by Mexico in Las Cabos, Mexico. The official theme for APEC 2002 is to expand the benefits of cooperation for economic growth and development and enable the APEC vision to be implemented. For the United States, APEC raises fundamental questions that are of special interest to Congress. One is whether consensus can be achieved on the APEC vision of free trade and investment in the Asia Pacific or whether future trade liberalization will be confined primarily to bilateral free-trade agreements or multilateral trade negotiations under the World Trade Organization.
Date: December 11, 2002
Creator: Nanto, Dick K.
Object Type: Report
System: The UNT Digital Library
Nuclear Weapons: Comprehensive Test Ban Treaty (open access)

Nuclear Weapons: Comprehensive Test Ban Treaty

None
Date: December 11, 2002
Creator: Medalia, Jonathan
Object Type: Report
System: The UNT Digital Library