China's Changing Conditions (open access)

China's Changing Conditions

This report discusses congressional interest in the leadership change and economic transformation underway in China, which has grown substantially over the past two years. Leading congressional concerns focus on how economic conditions in China pose opportunities for U.S. enterprise and how the evolution of conditions in China foster U.S. security, economic, and political interests. Congressional concern with China grew in 1995 as a result of reports of the serious decline in the health of senior Chinese leader Deng Xiaoping.
Date: July 6, 1995
Creator: Sutter, Robert G.; Kan, Shirley A. & Dumbaugh, Kerry
Object Type: Report
System: The UNT Digital Library
Chinese Missile and Nuclear Proliferation: Issues for Congress (open access)

Chinese Missile and Nuclear Proliferation: Issues for Congress

The President has identified proliferation as a primary danger to U.S. security interests. China has contributed to the danger by providing nuclear weapons technology to Pakistan, and other nuclear technology to Iran and Algeria. China has also supplied CSS-2 intermediate-range ballistic missiles to Saudi Arabia, Silkworm anti-ship missiles to Iran and Iraq, and ballistic missile technology to Pakistan and perhaps Iran, North Korea, and others. China developed the mobile, solid-fuel M-9 and M-11 short-range ballistic missiles reportedly with Pakistan, Syria, and Iran as interested buyers.
Date: July 6, 1995
Creator: Shuey, Robert & Kan, Shirley A.
Object Type: Report
System: The UNT Digital Library
Derived reference doses for three compounds used in the photovoltaics industry: Copper indium diselenide, copper gallium diselenide, and cadmium telluride (open access)

Derived reference doses for three compounds used in the photovoltaics industry: Copper indium diselenide, copper gallium diselenide, and cadmium telluride

Polycrystalline thin-film photovoltaic modules made from copper indium diselenide (CIS), copper gallium diselenide (CGS), and cadmium telluride (CdTe) arc nearing commercial development. A wide range of issues are being examined as these materials move from the laboratory to large-scale production facilities to ensure their commercial success. Issues of traditional interest include module efficiency, stability and cost. More recently, there is increased focus given to environmental, health and safety issues surrounding the commercialization of these same devices. An examination of the toxicological properties of these materials, and their chemical parents is fundamental to this discussion. Chemicals that can present large hazards to human health or the environment are regulated often more strictly than those that are less hazardous. Stricter control over how these materials are handled and disposed can increase the costs associated with the production and use of these modules dramatically. Similarly, public perception can be strongly influenced by the inherent biological hazard that these materials possess. Thus, this report: presents a brief background tutorial on how toxicological data are developed and used; overviews the toxicological data available for CIS, CGS and CdTe; develops ``reference doses`` for each of these compounds; compares the reference doses for these compounds with those …
Date: July 6, 1995
Creator: Moskowitz, P.D.; Bernholc, N.; DePhillips, M.P. & Viren, J.
Object Type: Report
System: The UNT Digital Library
Frequency response characteristics and response spectra of base-isolated and un-isolated structures (open access)

Frequency response characteristics and response spectra of base-isolated and un-isolated structures

The transmissibility of seismic loads through a linear base-isolation system is analyzed using an impedance method. The results show that the system acts like a {open_quotes}low-pass{close_quotes} filter. It attenuates high-frequency loads but passes through low-frequency ones. The filtering effect depends on the vibration frequencies and damping of the isolated structure and the isolation system. This paper demonstrates the benefits and design principles of base isolation by comparing the transmissibilities and response spectra of isolated and un-isolated structures. Parameters of typical isolated buildings and ground motions of the 1994 Northridge earthquake are used for the demonstration.
Date: July 6, 1995
Creator: Mok, G.C. & Namba, H.
Object Type: Article
System: The UNT Digital Library
Habitat Modification and the Endangered Species Act: The Sweet Home Decision (open access)

Habitat Modification and the Endangered Species Act: The Sweet Home Decision

This report discusses the Endangered Species Act, the regulation of the Fish and Wildlife Service defining "harm" for purposes of the "take" prohibitions of the Endangered Species Act.
Date: July 6, 1995
Creator: Baldwin, Pamela
Object Type: Report
System: The UNT Digital Library
Identification and evaluation of fluvial-dominated deltaic (Class 1 oil) reservoirs in Oklahoma. Quarterly technical progress report, October 1, 1994--December 31, 1994 (open access)

Identification and evaluation of fluvial-dominated deltaic (Class 1 oil) reservoirs in Oklahoma. Quarterly technical progress report, October 1, 1994--December 31, 1994

The Oklahoma Geological Survey (OGS), the Geological Information Systems department, and the School of Petroleum and Geological Engineering at the University of Oklahoma are engaging in a program to identify and address Oklahoma`s oil recovery opportunities in fluvial-dominated deltaic (FDD) reservoirs. This program includes the systematic and comprehensive collection and evaluation of information on all of Oklahoma`s FDD reservoirs and the recovery technologies that have been (or could be) applied to those reservoirs with commercial success. This data collection and evaluation effort will be the foundation for an aggressive, multifaceted technology transfer program that is designed to support all of Oklahoma`s oil industry, with particular emphasis on smaller companies and independent operators in their attempts to maximize the economic producibility of FDD reservoirs. Specifically, this project will identify all FDD oil reservoirs in the State; group those reservoirs into plays that have similar depositional and subsequent geologic histories; collect, organize and analyze all available data; conduct characterization and simulation studies on selected reservoirs in each play; and implement a technology transfer program targeted to the operators of FDD reservoirs to sustain the life expectancy of existing wells with the ultimate objective of increasing oil recovery.
Date: July 6, 1995
Creator: Mankin, C. J. & Banken, M. K.
Object Type: Report
System: The UNT Digital Library
Is there a need for site productivity functions for short-rotation woody crop plantings? (open access)

Is there a need for site productivity functions for short-rotation woody crop plantings?

For over a decade, researchers have used small-scale research plots to assist development and selection of high yielding, pest-resistant clones of fast-growing hardwoods such as hybrid poplar (Populus spp.). Substantial advances have been made in the techniques and criteria for screening species and selecting clones. Data from these research plots indicate that the ultimate performance of selected clones is dependent upon variable factors in the environment. Until now, researchers could only determine the suitability of a given site for such clones, not the actual yield potential of the site. Recently in the north central US, several clones were planted on larger-than-research-scale plots on private land recontracted under the Conservation Reserve Program (CRP). The historical database could not provide a framework which would allow producers to predict the yield potential of a particular clone on a specific site. Through a systematic combination of clonal trials on experimental research-scale plots and operational plantings on 50 to 100 acre agricultural-scale field plots, it may be possible to develop yield functions or site quality equations which would predict biomass yields at rotation for selected clones. Such estimates will (1) reduce the probability of planting failure, (2) allow maximum expression of the genetic potential of …
Date: July 6, 1995
Creator: Downing, M. & Tuskan, G.A.
Object Type: Article
System: The UNT Digital Library
A review of statistical methods for data sets with multiple censoring points (open access)

A review of statistical methods for data sets with multiple censoring points

This report reviews and summarizes recent literature on statistical methods for analyzing data sets that are censored by multiple censoring points. This report is organized as follows. Following the introductory comments in Section 2, a brief discussion of detection limits is given in Section 3. Sections 4 and 5 focus on data analysis methods for estimating parameters and testing hypotheses, respectively, when data sets are left censored with multiple censoring points. A list of publications that deal with a variety of other applications for censored data sets is provided in Section 6. Recommendations on future research for developing new or improved tools for statistically analyzing multiple left-censored data sets are provided in Section 7. The list of references is in Section 8.
Date: July 6, 1995
Creator: Gilbert, R. O.
Object Type: Report
System: The UNT Digital Library
Sodium beacon laser system for the Lick Observatory (open access)

Sodium beacon laser system for the Lick Observatory

The installation and performance characteristics of a 20 W sodium beacon laser system for the 3 m Shane telescope at the Lick Observatory are presented.
Date: July 6, 1995
Creator: Friedman, H.; Erbert, G. & Kuklo, T.
Object Type: Article
System: The UNT Digital Library
User`s guide for SDDS toolkit Version 1.4 (open access)

User`s guide for SDDS toolkit Version 1.4

The Self Describing Data Sets (SDDS) file protocol is the basis for a powerful and expanding toolkit of over 40 generic programs. These programs are used for simulation postprocessing, graphics, data preparation, program interfacing, and experimental data analysis. This document describes Version 1.4 of the SDDS commandline toolkit. Those wishing to write programs using SDDS should consult the Application Programmer`s Guide for SDDS Version 1.4. The first section of the present document is shared with this reference. This document does not describe SDDS-compliant EPICS applications, of which there are presently 25.
Date: July 6, 1995
Creator: Borland, M.
Object Type: Report
System: The UNT Digital Library