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Education Vouchers: Constitutional Issues and Cases
This report details the constitutional standards that currently apply to indirect school aid programs and summarizes all of the pertinent Supreme Court decisions, with particular attention to Zelman. It also summarizes the pending case of Davey v. Locke and other recent and ongoing state and lower federal court cases concerning vouchers.
Date:
May 20, 2003
Creator:
Ackerman, David M.
Object Type:
Report
System:
The UNT Digital Library
Rapidity and centrality dependence of proton and anti-proton production from 197Au+197Au collisions at {radical}(s{sub NN}) = 130 GeV
We report on the rapidity and centrality dependence of proton and anti-proton transverse mass distributions from {sup 197}Au + {sup 197}Au collisions at {radical}s{sub NN} = 130 GeV as measured by the STAR experiment at RHIC. Our results are from the rapidity and transverse momentum range of |y| < 0.5 and 0.35 < p{sub t} < 1.00 GeV/c. For both protons and anti-protons, transverse mass distributions become more convex from peripheral to central collisions demonstrating characteristics of collective expansion. The measured rapidity distributions and the mean transverse momenta versus rapidity are flat within |y| < 0.5. Comparisons of our data with results from model calculations indicate that in order to obtain a consistent picture of the proton(anti-proton) yields and transverse mass distributions the possibility of pre-hadronic collective expansion may have to be taken into account.
Date:
June 20, 2003
Creator:
Adams, J.; Adler, C.; Aggarwal, M. M.; Ahammed, Z.; Amonett, J.; Anderson, B. D. et al.
Object Type:
Article
System:
The UNT Digital Library
Extraction of macro-molecule images in cryo-EM micrographs
Advances in Electron Microscopy and single-particle reconstruction have led to results at increasingly high resolutions. This has opened up the possibility of complete automation of single particle reconstruction. Main bottleneck in automation of single particle reconstruction is manual selection of particles in the micrograph. This paper describes a simple but efficient approach for segmentation of particle projections in the micrographs obtained using cryo-electron microscope. Changing the shape of objects to facilitate segmentation from the cluster and reconstructing its actual shape after isolation is successfully attempted. Both low-level and high-level processing techniques are used and the whole process is made automatic. Over 90 percent success in automatic particle picking is achieved. Several areas for improvement and future research directions are discussed.
Date:
March 20, 2003
Creator:
Adiga, Umesha P.S.; Malladi, Ravi & Glaeser, Robert M.
Object Type:
Report
System:
The UNT Digital Library
Trade and the Americas
None
Date:
March 20, 2003
Creator:
Ahearn, Raymond J.
Object Type:
Report
System:
The UNT Digital Library
Performing Neutron Cross-Section Measurements at RIA
The Rare Isotope Accelerator (RIA) is a proposed accelerator for the low energy nuclear physics community. Its goal is to understand the natural abundances of the elements heavier than iron, explore the nuclear force in systems far from stability, and study symmetry violation and fundamental physics in nuclei. To achieve these scientific goals, RIA promises to produce isotopes far from stability in sufficient quantities to allow experiments. It would also produce near stability isotopes at never before seen production rates, as much as 10{sup 12} pps. Included in these isotopes are many that are important to stockpile stewardship, such as {sup 87}Y, {sup 146-50}Eu, and {sup 231}Th. Given the expected production rates at RIA and a reasonably intense neutron source, one can expect to make {approx} 10 {micro}g targets of nuclei with a half-life of {approx}1 day. Thus, it will be possible at RIA to obtain experimental information on the neutron cross section for isotopes that have to date only been determined by theory. There are two methods to perform neutron cross-section measurements, prompt and delayed. The prompt method tries to measure each reaction as it happens. The exact technique employed will depend on the reaction of interest, (n,2n), (n,{gamma}), …
Date:
May 20, 2003
Creator:
Ahle, L. E.
Object Type:
Report
System:
The UNT Digital Library
A Neutron Source Facility for Neutron Cross-Section Measurements on Radioactive Targets at RIA
The stockpile stewardship program is interested in neutron cross-section measurements on nuclei that are a few nucleons away from stability. Since neutron targets do not exist, radioactive targets are the only way to directly perform these measurements. This requires a facility that can provide high production rates for these short-lived nuclei as well as a source of neutrons. The Rare Isotope Accelerator (RIA) promises theses high production rates. Thus, adding a co-located neutron source facility to the RIA project baseline would allow these neutron cross-section measurements to be made. A conceptual design for such a neutron source has been developed, which would use two accelerators, a Dynamitron and a linac, to create the neutrons through a variety of reactions (d-d, d-t, deuteron break-up, p-Li). This range of reactions is needed in order to provide the desired energy range from 10's of keV to 20 MeV. The facility would also have hot cells to perform chemistry on the radioactive material both before and after neutron irradiation. The present status of this design and direction of future work will be discussed.
Date:
May 20, 2003
Creator:
Ahle, L. E.; Bernstein, L.; Rusnak, B. & Berio, R.
Object Type:
Article
System:
The UNT Digital Library
Timpson & Tenaha News (Timpson, Tex.), Vol. 18, No. 46, Ed. 1 Thursday, November 20, 2003
Weekly newspaper from Timpson, Texas that includes local, state, and national news along with advertising.
Date:
November 20, 2003
Creator:
Alexander, Nancy
Object Type:
Newspaper
System:
The Portal to Texas History
Oral History Interview with Robert O. Andrews, September 20, 2003
Interview with Robert O. Andrews, a businessman and United States Army Air Force veteran from Jean, Texas, regarding his experience in the China-Burma-India Theater during World War II. Andrews discusses enlistment, training, assignments including his overseas assignments in India and Burma, reaction to the bombing of Hiroshima and Nagasaki, and his postwar career.
Date:
September 20, 2003
Creator:
Alexander, William J. & Andrews, Robert O.
Object Type:
Book
System:
The UNT Digital Library
Oral History Interview with Robert O. Andrews, September 20, 2003
Access:
Use of this item is restricted to the UNT Community
Interview with Robert O. Andrews, businessman and an Army Air Forces veteran, concerning his experiences in the China-Burma-India Theater during World War II. Andrews discusses his pre-war education and farming activities in Olney, Texas; enlistment in the Army Air Forces, c. 1941; assignment to Chanute Field, Illinois, c. 1941-42; Officer Candidate School, Miami Beach, Florida, c. 1942; assignment to Perrin Field, Sherman, Texas, c. 1942-44; overseas transport to India; assignment to Warazup, Burma, 1944-45; his reaction to the atomic bombing of Hiroshima and Nagasaki; and postwar career in business.
Date:
September 20, 2003
Creator:
Alexander, William J. & Andrews, Robert O., 1919-
Object Type:
Book
System:
The UNT Digital Library
Oral History Interview with Frank Breyer, September 20, 2003
Access:
Use of this item is restricted to the UNT Community
Interview with Army veteran Frank Breyer, including personal experiences about the China-Burma-India Theater during World War II, volunteering for the draft, various assignments, his attachment to Merrill's Marauders, medical evacuation to Ledo, combat around Bhamo, Burma, the opening of the Burma Road, transfer to the 612th Artillery and to Kunming, China, for artillery training, teaching artillery tactics to Chinese troops with the Chinese Combat and Training Command, and the resumption of fighting between Chinese Nationalist and Communist forces.
Date:
September 20, 2003
Creator:
Alexander, William J. & Breyer, Frank
Object Type:
Book
System:
The UNT Digital Library
Oral History Interview with Robert Hoe, September 20, 2003
Access:
Use of this item is restricted to the UNT Community
Interview with Robert Hoe, a Navy WWII veteran of the China-Burma-India theater from Le Roy, New York. Hoe discusses growing up, the reaction to Pearl Harbor, attending college, enlisting in the Navy, training and becoming an officer, joining the Navy Scouts and Raiders, deployment to China and assignment to the Sino-American Cooperative Organization, supplying their forces, operations with guerilla fighters against the Japanese occupation, intelligence gathering, his reaction to the atomic bomb, the end of the war, service in China and discharge, and life as a civilian.
Date:
September 20, 2003
Creator:
Alexander, William J. & Hoe, Robert
Object Type:
Book
System:
The UNT Digital Library
Letter from the Oklahoma State Branch of NAACP Branches regarding arrangements for the 2003 state conference
Letter regarding the history of the conference, the speaker, and seeking advertisements.
Date:
October 20, 2003
Creator:
Allen, Richard; Wiles, Juanita & Jackson-Oliver, Sandra
Object Type:
Letter
System:
The Gateway to Oklahoma History
Preliminary Authorization Basis Documentation for the Proposed Bio Safety Level 3 (BSl-3) Facility
Lawrence Livermore National Laboratory (LLNL) is proposing to construct a biosafety level (BSL-3) facility at Site 200 in Livermore, California. Biosafety level 3 (BSL-3) is a designation assigned by the Centers for Disease Control and Prevention (CDC) and National Institutes Health (NIH) for handling infectious organisms based on the specific microorganisms and associated operations. Biosafety levels range from BSL-1 (lowest hazard) to BSL-4 (highest hazard). Details about the BSL-3 criteria are described in the Center of Disease Control and Prevention (CDC)/National Institutes of Health (NIH)'s publication ''Biosafety Microbiological and Biomedical Laboratories'' (BMBL), 4th edition (CDC 1999): The BSL-3 facility will be built in accordance with the required BMBL guidelines. This Preliminary Authorization Basis Documentation (PABD) for the proposed BSL-3 facility has been prepared in accordance with the current contractual requirements at LLNL. This includes the LLNL Environment, Safety, and Health Manual (ES&H Manual) and applicable Work Smart Standards, including the biosafety standards, such as the aforementioned BMBL and the NIH Guidelines for Research Involving Recombinant DNA Molecules: The proposed BSL-3 facility is a 1,100 ft{sup 2}, one-story permanent prefabricated facility, which will have three individual BSL-3 laboratory rooms (one of which is an animal biosafety level-3 [ABSL-3] laboratory to handle …
Date:
September 20, 2003
Creator:
Altenbach, T J & Nguyen, S N
Object Type:
Report
System:
The UNT Digital Library
Coming to Washington, D.C.? Sources of Information on Temporary Housing
This report will introduce a newcomer to the Washington, D.C., metropolitan area to sources of general interest, neighborhoods, housing, and public transportation. The intended audience is congressional staff needing short-term or summer housing, although many of the sources given may also be helpful for those needing more than a three- to six-month lease. Sources suggested are often accessible by their Internet addresses.
Date:
March 20, 2003
Creator:
Anderson, J. Michael
Object Type:
Report
System:
The UNT Digital Library
Altus Times (Altus, Okla.), Vol. 105, No. 134, Ed. 1 Wednesday, August 20, 2003
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
August 20, 2003
Creator:
Andrews, Mike
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Altus Times (Altus, Okla.), Vol. 105, No. 185, Ed. 1 Monday, October 20, 2003
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
October 20, 2003
Creator:
Andrews, Mike
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Altus Times (Altus, Okla.), Vol. 105, No. 212, Ed. 1 Thursday, November 20, 2003
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
November 20, 2003
Creator:
Andrews, Mike
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Oral History Interview with Robert O. Andrews, September 20, 2003
The National Museum of the Pacific War presents an oral interview with Robert O. Andrews where he discusses his childhood and education and what led him to join the Air Force. He describes his experiences in the Pacific Theatre and over Asia during World War two.
Date:
September 20, 2003
Creator:
Andrews, Robert O. & Alexander, William J.
Object Type:
Text
System:
The Portal to Texas History
Research Administration Benchmarking Project
The National Science Foundation (NSF) is conducting a collection of baseline data that will serve as an index for describing the way in which grant applications/proposals are developed and tracked at grant recipient organizations. The type of information to be collected includes (1) estimate of burden, both time and cost, to the applicant organization (2) descriptiion of the overall development and tracking systems used by the applicant, and (3) data that can be compared after the implementation of either a streamlined paper or electronic system.
Date:
April 20, 2003
Creator:
Arnest, Paul
Object Type:
Report
System:
The UNT Digital Library
[3rd annual Sankofa Café Bash "Spoken Word "Til Midnight"]
Video recording from The Black Academy of Arts and Letters recorded during the conclusion of the 3rd annual Sankofa Café Bash "Spoken Word "Til Midnight" literary voices series performance. The spoken word event featured Ordained in Lyrics, Surreal Thought Universe and musical group Common Folk Band.
Date:
June 20, 2003
Creator:
Artist's One Project; King, Curtis & Spencer, Camika
Object Type:
Video
System:
The UNT Digital Library
Eliminating a Major Cause of Wire Drawing Breakage in A-15 High-Field Superconductors
Eliminating a Major Cause of Wire Drawing Breakage in A-15 High-Field Superconductors Phase 1 Summary Purpose of the research: The Phase 1 goal was to make a significant improvement in the wire drawing technology used for difficult to draw superconductor precursor composites. Many ductile Nb-Al and Nb-Sn precursor wire composites have experienced the onset of wire drawing breakage at about 1.5 mm diameter. Phase 1 focused on evaluating the role that precision rigid guidance of the wire into the drawing die and the hydrostatic stress state at the die entrance played in preventing wire breakage. Research carried out: The research performed depended upon the construction of both a mechanical wire guide and a hydrostatic pressure stiffened wire guidance system. Innovare constructed the two wire guidance systems and tested them for their ability to reduce wire drawing breakage. One set of hardware provided rigid alignment of the wires to their wire drawing die axes within 0.35 degrees using ''hydrostatic pressure stiffening'' to enable the precision guidance strategy to be implemented for these highly flexible small diameter wires. This apparatus was compared to a guide arrangement that used short span mechanical guide alignment with a misalignment limit of about 0.75 degrees. Four …
Date:
May 20, 2003
Creator:
Austen, Alfred R.
Object Type:
Report
System:
The UNT Digital Library
Fabrication of large diameter alumino-silicate K{sup +} sources
Alumino-silicate K{sup +} sources have been used in HIF experiments for many years. For example the Neutralized Transport Expt. (NTX) and the High Current Transport Expt. (HCX) are now using this type of ion source with diameters of 2.54 cm and 10 cm respectively. These sources have demonstrated ion currents of 80 mA and 700 mA, for typical HIF pulse lengths of 5-10 {micro}s. The corresponding current density is {approx} 10-15 mA/cm{sup 2}, but much higher current density has been observed using smaller size sources. Recently we have improved our fabrication techniques and, therefore, are able to reliably produce large diameter ion sources with high quality emitter surface without defects. This note provides a detailed description of the procedures employed in the fabrication process. The variables in the processing steps affecting surface quality, such as substrate porosity, powder size distribution, coating technique on large area concave surfaces, drying, and heat firing temperature have been investigated.
Date:
February 20, 2003
Creator:
Baca, D.; Chacon-Golcher, E.; Kwan, J. W. & Wu, J. K.
Object Type:
Article
System:
The UNT Digital Library
Performance Technolgies for Peta-Scale Systems: A White Paper Prepared by the Performance Evaluation Research Center
Future-looking high end computing initiatives will deploy powerful, large-scale computing platforms that leverage novel component technologies for superior node performance in advanced system architectures with tens or even hundreds of thousands of nodes. Recent advances in performance tools and modeling methodologies suggest that it is feasible to acquire such systems intelligently and achieve excellent performance, while also significantly reducing the user time required to attain high performance. These developments are relevant to several aspects of future HEC technology outlined in the recent HECRTF white paper request, in particular items 5.4, 5.5, 5.6, and 5.8. We envision the following specific capabilities: (1) Performance modeling tools, available to researchers and vendors, will extrapolate performance from prototype systems to full-scale systems, and even accurately predict performance behavior before systems are manufactured, thus enabling both improved designs and more intelligent selection of systems in procurements. (2) System simulation facilities, implemented on highly parallel platforms and available to researchers and vendors, will for instance realistically model the performance of a specific interprocessor network design running a specific scientific application code. As with item 1, these facilities can lead both to improved designs and procurement decisions that yield significantly greater sustained performance for targeted scientific applications. …
Date:
May 20, 2003
Creator:
Bailey, D. H.; de Supinski, B. R.; Dongarra, J.; Dunigan, T.; Gao, G.; Hoisie, A. et al.
Object Type:
Report
System:
The UNT Digital Library
Federal Grazing Regulations: Public Lands Council v. Babbitt
None
Date:
November 20, 2003
Creator:
Baldwin, Pamela
Object Type:
Report
System:
The UNT Digital Library