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  Partner: UNT Libraries Government Documents Department
 Decade: 1990-1999
 Year: 1991
1991 Annual report to the National Science Foundation

1991 Annual report to the National Science Foundation

Date: December 1, 1991
Creator: unknown
Description: This report contains discussions by researcher of the center on the computation and visualization of geometric structures. Most of the research involves the following: development of research software; exploration of mathematical structures; and computational crystal growth.
Contributing Partner: UNT Libraries Government Documents Department
1991 annual report to the National Science Foundation

1991 annual report to the National Science Foundation

Date: December 1, 1991
Creator: unknown
Description: The Geometry Center research program has a number of different aspects, most of which involve longer term commitments, such as, development of research software, teams of individuals visually exploring mathematical structures and sponsoring of workshops. The Center is built on the research programs of its faculty. These programs have flourished and interacted under the Center umbrella. There are many interconnections and commonalities between the fields represented. Here, a summary of the research work of each of the faculty members. Some of the research topics are geometric calculus of variations, group theory, geometric algorithms, and computer graphics.
Contributing Partner: UNT Libraries Government Documents Department
The 1992 World Administrative Radio Conference: Issues for U.S. International Spectrum Policy

The 1992 World Administrative Radio Conference: Issues for U.S. International Spectrum Policy

Date: November 1991
Creator: United States. Congress. Office of Technology Assessment.
Description: This report examines the U.S. preparations process for WARC-92, highlighting efforts to integrate the needs and concerns of various interest groups. It also reviews the forces and trends affecting the United States as it approaches WARC-92, and is intended to inform future congressional oversight of the domestic and international radio communication policy process.
Contributing Partner: UNT Libraries Government Documents Department
32nd Annual Report

32nd Annual Report

Date: January 1991
Creator: United States. Advisory Commission on Intergovernmental Relations.
Description: The ACIR Library is composed of publications that study the interactions between different levels of government. This document is an annual report.
Contributing Partner: UNT Libraries Government Documents Department
Actinide transport in Topopah Spring Tuff: Pore size, particle size, and diffusion

Actinide transport in Topopah Spring Tuff: Pore size, particle size, and diffusion

Date: April 1, 1991
Creator: Buchholtz ten Brink, M.; Phinney, D.L. & Smith, D.K.
Description: Diffusive transport rates for aqueous species in a porous medium are a function of sorption, molecular diffusion, and sample tortuosity. With heterogeneous natural samples, an understanding of the effect of multiple transport paths and sorption mechanisms is particularly important since a small amount of radioisotope traveling via a faster-than-anticipated transport path may invalidate the predictions of transport codes which assume average behavior. Static-diffusion experiments using aqueous {sup 238}U tracer in tuff indicated that U transport was faster in regions of greater porosity and that apparent diffusion coefficients depended on the scale (m or {mu}m) over which concentration gradients were measured in Topopah Spring Tuff. If a significant fraction of actinides in high-level waste are released to the environment in forms that do not sorb to the matrix, they may be similarly transported along fast paths in porous regions of the tuff. To test this, aqueous diffusion rates in tuff were measured for {sub 238}U and {sub 239}Pu leached from doped glass. Measured transport rates and patterns were consistent in both systems with a dual-porosity transported moeld. In addition, filtration or channelling of actinides associated with colloidal particles may significantly affect the radionuclide transport rate in Topopah Spring tuff. 9 refs., ...
Contributing Partner: UNT Libraries Government Documents Department
Activities and Operations of Argonne's Advanced Computing Research Facility : February 1990 through April 1991

Activities and Operations of Argonne's Advanced Computing Research Facility : February 1990 through April 1991

Date: May 1991
Creator: Pieper, Gail W.
Description: This report reviews the activities and operations of the Advanced Computing Research Facility (ACRF) from February 1990 through April 1991. The ACRF is operated by the Mathematics and Computer Science Division at Argonne National Laboratory. The facility's principal objective is to foster research in parallel computing. Toward this objective, the ACRF operates experimental advanced computers, supports investigations in parallel computing, and sponsors technology transfer efforts to industry and academia.
Contributing Partner: UNT Libraries Government Documents Department
Adjusting to a New Security Environment: The Defense Technology and Industrial Base Challenge

Adjusting to a New Security Environment: The Defense Technology and Industrial Base Challenge

Date: February 1991
Creator: United States. Congress. Office of Technology Assessment.
Description: This background paper, OTA sought information and advice from a broad spectrum of knowledgeable individuals and organizations whose contributions are gratefully acknowledged. As with all OTA studies, the content of this background paper is the sole responsibility of the Office of Technology Assessment and does not necessarily represent the views of our advisers and reviewers.
Contributing Partner: UNT Libraries Government Documents Department
Adolescent Health, Volume 1: Summary and Policy Options

Adolescent Health, Volume 1: Summary and Policy Options

Date: April 1991
Creator: United States. Congress. Office of Technology Assessment.
Description: This OTA’s report responds to the request of numerous Members of Congress to review the physical, emotional, and behavioral health status of contemporary American adolescents, including adolescents in groups who might be more likely to be in special need of health-related interventions: adolescents living in poverty, adolescents from racial and ethnic minority groups, Native American adolescents, and adolescents in rural areas. In addition, OTA was asked to: 1 ) identify risk and protective factors for adolescent health problems and integrate national data in order to understand the clustering of specific adolescent problems, 2) evaluate options in the organization of health services and technologies available to adolescents (including accessibility and financing), 3) assess options in the conduct of national health surveys to improve collection of adolescent health statistics, and 4) identify gaps in research on the health and behavior of adolescents.
Contributing Partner: UNT Libraries Government Documents Department
Adolescent Health, Volume 2: Background and the Effectiveness of Selected Prevention and Treatment Services

Adolescent Health, Volume 2: Background and the Effectiveness of Selected Prevention and Treatment Services

Date: October 1991
Creator: United States. Congress. Office of Technology Assessment.
Description: The report responds to the request of numerous Members of Congress to review the physical, emotional, and behavioral health status of contemporary American adolescents, including adolescents in groups who might be more likely to be in special need of health-related interventions: adolescents living in poverty, adolescents from racial and ethnic minority groups, Native American adolescents, and adolescents in rural areas.
Contributing Partner: UNT Libraries Government Documents Department
Adolescent Health, Volume 3: Crosscutting Issues in the Delivery of Health and Related Services

Adolescent Health, Volume 3: Crosscutting Issues in the Delivery of Health and Related Services

Date: June 1991
Creator: United States. Congress. Office of Technology Assessment.
Description: OTA’s report responds to the request of numerous Members of Congress to review the physical, emotional, and behavioral health status of contemporary American adolescents, including adolescents in groups who might be more likely to be in special need of health-related interventions: adolescents living in poverty, adolescents from racial and ethnic minority groups, Native American adolescents, and adolescents in rural areas.
Contributing Partner: UNT Libraries Government Documents Department
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