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20,281 Matching Results
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Development of alternative oxygen production source using a zirconia solid electrolyte membrane
The objective of this multiyear effort was the development, fabrication and testing of a zirconia oxygen production module capable of delivering approximately 100 liters/minute (LPM) of oxygen. The work discussed in this report consists of development and improvement of the zirconia cell along with manufacture of cell components, preliminary design of the final plant, additional economic analysis and industrial participation. (VC)
Date:
August 1, 1990
Creator:
Suitor, J. W.; Clark, D. J. & Losey, R. W.
Object Type:
Report
System:
The UNT Digital Library
[Cheer Dallas Megaphone]
White megaphone with a blue and red logo for Cheer Dallas in the center. Decorative blue and red stars are below the logo in a ring around the wide end of the megaphone. The megaphone is laying on its side with the logo up.
Date:
1990~
Creator:
unknown
Object Type:
Physical Object
System:
The UNT Digital Library
[Lifetime Achievement Award for John David Thomas]
Cut-glass trophy in a rough teardrop shape on a rectangular base. Gold text in the body says "John Thomas Life Time Achievement Award" and has the logo for the Foundation for Human Understanding at the bottom.
Date:
1990
Creator:
unknown
Object Type:
Physical Object
System:
The UNT Digital Library
[Medals from the Gay Games]
Detail view of six medals from Gay Games III, an LGBT event similar to the Olympics. They are arranged in a rough star shape against a blue background, with a bronze medal in the center and five gold medals in a ring around it. Each medal has a colored cord attached at the top and stretched toward the edges of the background.
Date:
1990
Creator:
unknown
Object Type:
Physical Object
System:
The UNT Digital Library
[Medals from the Gay Games]
Six medals from Gay Games III, an LGBT event similar to the Olympics. They are arranged in a rough star shape against a blue background, with a bronze medal in the center and five gold medals in a ring around it. Each medal has a colored cord attached at the top and stretched toward the edges of the background.
Date:
1990
Creator:
unknown
Object Type:
Physical Object
System:
The UNT Digital Library
[Resource Center Dallas T-Shirt]
White T-shirt with a blue and red logo over the left breast. The logo has an outline of a house with a candle inside and the text "Resource Center of Dallas Volunteer" written underneath.
Date:
1990
Creator:
unknown
Object Type:
Physical Object
System:
The UNT Digital Library
Texas Academy of Mathematics and Science Parent Handbook, 1990-1991
Handbook for parents of students in the Texas Academy of Mathematics and Science for the 1990-91 school year. It includes an introduction, student profile, academy calendar, information on academics, student life, financial information, social life, local resources, who to contact in emergencies and non-emergencies, and a map of campus.
Date:
1990
Creator:
Texas Academy of Mathematics and Science
Object Type:
Pamphlet
System:
The UNT Digital Library
Texas Academy of Mathematics & Science Guide Book
Guide book for students in the Texas Academy of Mathematics and Science for the 1990-91 school year. It includes an academic calendar, information on the administration, student life program and policies, housing, and academic program and policies.
Date:
1990
Creator:
Texas Academy of Mathematics and Science
Object Type:
Pamphlet
System:
The UNT Digital Library
[List of Donors to the Texas Academy of Math and Science]
List of donors to the Texas Academy of Math and Science, as of March 31, 1990. The list includes the name of the donor or company, the total amount of money given, and the amount received in cash for the years 1990, 1989, 1988, and 1987.
Date:
April 25, 1990
Creator:
unknown
Object Type:
Text
System:
The UNT Digital Library
Southwest Retort, Volume 44, Number [8], November 1990
This publication of the Dallas-Fort Worth Section of the American Chemical Society includes information about research, prominent scientist, organizational business, and various other stories of interest to the community.
Date:
November 1990
Creator:
American Chemical Society. Dallas/Fort Worth Section.
Object Type:
Journal/Magazine/Newsletter
System:
The UNT Digital Library
Southwest Retort, Volume [44], Number [1], January 1990
This publication of the Dallas-Fort Worth Section of the American Chemical Society includes information about research, prominent scientist, organizational business, and various other stories of interest to the community.
Date:
January 1990
Creator:
American Chemical Society. Dallas/Fort Worth Section.
Object Type:
Journal/Magazine/Newsletter
System:
The UNT Digital Library
Southwest Retort, Volume 44, Number 2, February 1990
This publication of the Dallas-Fort Worth Section of the American Chemical Society includes information about research, prominent scientist, organizational business, and various other stories of interest to the community.
Date:
February 1990
Creator:
American Chemical Society. Dallas/Fort Worth Section.
Object Type:
Journal/Magazine/Newsletter
System:
The UNT Digital Library
Southwest Retort, Volume 44, Number 4, April 1990
This publication of the Dallas-Fort Worth Section of the American Chemical Society includes information about research, prominent scientist, organizational business, and various other stories of interest to the community.
Date:
April 1990
Creator:
American Chemical Society. Dallas/Fort Worth Section.
Object Type:
Journal/Magazine/Newsletter
System:
The UNT Digital Library
Southwest Retort, Volume 44, Number 5, May 1990
This publication of the Dallas-Fort Worth Section of the American Chemical Society includes information about research, prominent scientist, organizational business, and various other stories of interest to the community.
Date:
May 1990
Creator:
American Chemical Society. Dallas/Fort Worth Section.
Object Type:
Journal/Magazine/Newsletter
System:
The UNT Digital Library
Southwest Retort, Volume 44, Number [9], December 1990
This publication of the Dallas-Fort Worth Section of the American Chemical Society includes information about research, prominent scientist, organizational business, and various other stories of interest to the community.
Date:
December 1990
Creator:
American Chemical Society. Dallas/Fort Worth Section.
Object Type:
Journal/Magazine/Newsletter
System:
The UNT Digital Library
Southwest Retort, Volume 44, Number [6], September 1990
This publication of the Dallas-Fort Worth Section of the American Chemical Society includes information about research, prominent scientist, organizational business, and various other stories of interest to the community.
Date:
September 1990
Creator:
American Chemical Society. Dallas/Fort Worth Section.
Object Type:
Journal/Magazine/Newsletter
System:
The UNT Digital Library
Southwest Retort, Volume 44, Number [7], October 1990
This publication of the Dallas-Fort Worth Section of the American Chemical Society includes information about research, prominent scientist, organizational business, and various other stories of interest to the community.
Date:
October 1990
Creator:
American Chemical Society. Dallas/Fort Worth Section.
Object Type:
Journal/Magazine/Newsletter
System:
The UNT Digital Library
Southwest Retort, Volume 44, Number 3, March 1990
This publication of the Dallas-Fort Worth Section of the American Chemical Society includes information about research, prominent scientist, organizational business, and various other stories of interest to the community.
Date:
March 1990
Creator:
American Chemical Society. Dallas/Fort Worth Section.
Object Type:
Journal/Magazine/Newsletter
System:
The UNT Digital Library
ReSource, Volume 7, Number 1, Fall 1990
ReSource magazine includes articles and notes about research at University of North Texas in various academic fields.
Date:
1990
Creator:
University of North Texas
Object Type:
Journal/Magazine/Newsletter
System:
The UNT Digital Library
How Healthy is the Upper Trinity River?: Biological and Water Quality Perspectives
This conference report contains discussions and papers from a symposium hosted at Texas Christian University, in Fort Worth, Texas, examining the ecological health of the Upper Trinity River, and the impacts of various human activity, such as agriculture, urbanization, and waste management. The papers cover the effect of water quality on urban rivers, long-term water quality trends in the Trinity River, solutions that may improve water quality in the river, as well as biological, agricultural and waste-water issues.
Date:
1990
Creator:
Jensen, Ric
Object Type:
Book
System:
The UNT Digital Library
Differences in School Districts' Decision-Making Processes Before and After Tax Limitation Elections: A Case Study
Using a case study approach, this investigation focused on the decision-making processes involved in developing budgets in two Texas school districts following a tax limitation, or rollback, election. Factors influencing the decision-making processes included the rollback election's outcome in each district, the participants, the perceptions participants held of themselves, the perceptions participants held of others in the district and community, the decisions made, and the factors influencing participants' decisions. Two Texas school districts were selected as subjects of this study which used qualitative data collection methods. In one school district, the rollback election passed. In the other, it failed. Data collection included observations of school board meetings and budget workshops. Structured interviews of school board members and administrators, pro- and antirollback proponents, and newspaper editors were conducted. Questions focused on the budgetary decision-making processes before and after the rollback elections. They also solicited information fromsubjects regarding rollback elections, the factors precipitating the rollback elections and the impact of the rollback election campaign upon each school district. Document analyses were triangulated with the observations and interviews to identify the factors influencing the budgetary decision-making process. Following the rollback elections, school officials in both districts adopted a conservative approach to budgetary decision-making. …
Date:
May 1990
Creator:
Travis, Rosemary Fechner
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Racial Residential Segregation: Tracking Three Decades in a Single City
This study evaluated the relative association of socioeconomic, minority group and housing characteristics of census tracts with the racial composition of residential areas within one southwestern city between 1950 and 1980. The unit of analysis was the census tract; the data were taken from the U.S. Census of Population and Housing 1950-1980 for the Fort Worth, Texas SMSAs. The Index of Dissimilarity compared racial segregation in the Fort Worth urbanized area for blacks with all others (1950-1980) and for Spanish and non-black minorities with all others (1960-1980). The data show little change in the extent of residential segregation over 30 years. The multiple regression showed that the degree of segregation in census tracts became increasingly predictable based on past minority concentration in the same neighborhood. Lagged social status and minority group variables significantly predicted the percent of the population that was black or Spanish in census tracts ten years later. Beta weights for percent black or percent Spanish were always the strongest in each tract regression and largely determined the level of segregation that existed in tracts ten years later. This paper asserts that social status characteristics must approach more equal levels between minority and majority groups before integrated neighborhoods …
Date:
August 1990
Creator:
Clark, Marjorie, 1921-
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
A Cost-Benefit Analysis of the Implementation of Texas House Bill 72 in Selected Texas Public School Districts
This study was conducted to analyze the effect of implementation of Texas House Bill 72 on budgets of selected Texas public school districts and to ascertain educational benefits to students derived from implementation of the bill as perceived by superintendents. Questionnaires were sent to superintendents of the Region 10 Education Service Center to determine perceived educational benefits to students. A demographic data sheet provided information for classifying respondents by educational experience, superintendent experience, and district enrollment classifications. Sixty-two districts responded. Official public school budget data for each district were analyzed for fiscal years 1983 through 1986 as were data from the questionnaire. Overall statistical information was gleaned through CONDESCRIPTIVE. Mean total expenditures, mean total tax rate, and state fiscal aid data were compiled, tabulated, and reported for each enrollment classification and entire sample. In addition, a t-test between the difference of two independent means at a probability level of .05 was applied. The two independent means were the averages of data for the two years prior to and after implementation of the law for expenditures, tax rates, and state fiscal contributions. Data comparing local and state expenditures were compiled, tabulated, and reported for each group to compare local and state …
Date:
May 1990
Creator:
Bradford, Ronald W. (Ronald Wayne)
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
The Influence of the First Amendment on Academic Freedom
Academic freedom has gone through three distinct eras yet each era overlaps a great deal with the one following it. The first era was the bureaucratic. It was exemplified by the negotiations between administrators and professors in the 1920s. The American Association of University Professors and the American Association of Colleges began cooperating and a hierarchical structure emerged, with the tenured professor at the top of the faculty. The second era was the political era and it was mainly a result of loyalty oaths, which began after the first World War and then escalated again during the 1930s when communism became a major concern. The political era then gave way to the legal era when the first academic freedom cases went to the United States Supreme Court in the 1950s. The first cases were the result of political pressures that became legal pressures. Most of the early court cases were based on communism. The legal era has produced changes. There are now more rights; for students and teachers of all levels, including pre-college levels, are guaranteed some academic freedom rights. However, the First Amendment and academic freedom are not synonymous because a professor usually cannot win a case based solely …
Date:
May 1990
Creator:
Ferdon, Douglas Robert, 1945-
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library