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Systematic Effects in Type-1a Supernovae Surveys from Host Galaxy Spectra

Description: The physical relation between the properties of Type Ia supernovae and their host galaxies is investigated. Such supernovae are used to constrain the properties of dark energy, making it crucial to understand their physical properties and to check for systematic effects relating to the stellar populations of the progenitor stars from which these supernovae arose. This grant found strong evidence for two distinct populations of supernovae, and correlations between the progenitor stellar populations and the nature of the supernova light curves.
Date: August 23, 2013
Creator: Strauss, Michael A.
Partner: UNT Libraries Government Documents Department

U.S. Mexico Migration

Description: This presentation is part of the faculty lecture series UNT Speaks Out on Unauthorized Immigration. This presentation discusses immigration, specifically between the United States and Mexico.
Date: April 13, 2011
Creator: Molina, David J.
Partner: UNT College of Arts and Sciences

The Population Dynamics and Trophic Relationships of Seven Species of Fish in a Small Southwestern Pond, with Special Attention Toward Young-of-the-Year Fish

Description: Production rates of seven species of fish, along with food-web interactions, were determined for one year in a pond. Production of fish in the pond amounted to 208.9 q/m2/yr. Over 95% of the production occurred in the summer, with Y of Y fish contributing 83.8%. There were two food-web interactions observed in Y of Y fishes: crappie vs. bass and bullhead vs. sunfish. When Y of Y fish shifted to benthic diets in the spring, the small biomass of benthos available could not sustain the larger biomass of fish. Competition for the available food resulted in decreased production rates for the fish community.
Date: August 1975
Creator: Jones, Fredrick V.
Partner: UNT Libraries

Looking for Darwin's footprints in the microbial world

Description: As we observe the 200th anniversary of Charles Darwin's birthday, microbiologists interested in the application of Darwin's ideas to the microscopic world have a lot to celebrate: an emerging picture of the (mostly microbial) Tree of Life at ever-increasing resolution, an understanding of horizontal gene transfer as a driving force in the evolution of microbes, and thousands of complete genome sequences to help formulate and refine our theories. At the same time, quantitative models of the microevolutionary processes shaping microbial populations remain just out of reach, a point that is perhaps most dramatically illustrated by the lack of consensus on how (or even whether) to define bacterial species. We summarize progress and prospects in bacterial population genetics, with an emphasis on detecting the footprint of positive Darwinian selection in microbial genomes.
Date: March 30, 2009
Creator: Shapiro, B. Jesse; David, Lawrence A.; Friedman, Jonathan & Alm, Eric J.
Partner: UNT Libraries Government Documents Department

The Cost of Homelessness in Dallas: An Economic and Fiscal Perspective

Description: This report, by the University of North Texas Center for Economic Development and Research, briefly describes the system of service delivery to homeless persons in Dallas and examines how other cities deal with their homeless populations, particularly those that have centralized service delivery. This report also documents the growing disparities in property values between the northern and southern sectors of the DCBD and calculates the potential tax revenues, jobs and income that could be generated by a revitalized southern sector.
Date: December 2000
Creator: Weinstein, Bernard L. & Clower, Terry L.
Partner: UNT Center for Economic Development and Research

Mobility of people and goods in the urban environment: mobility of the handicapped and elderly. Second year final report. [Methodology]

Description: An evaluation methodology for the analysis of alternative transportation improvements for the handicapped and elderly is proposed. The approach is based on the ability to incorporate the qualitative attributes of transportation systems which are particularly significant to the handicapped and elderly groups. These attributes include comfort and convenience, security and safety, and accessibility. In addition, this study addresses the issues of demonstration projects planning and offers guidelines for the design of demonstration experiments which can produce results that are capable of objective analytical interpretation.
Date: September 1, 1976
Creator: Falcocchio, J.; Santimataneedol, S.; Horwitz, L. & Stephanis, B.
Partner: UNT Libraries Government Documents Department

Historical perspective on the moon base: the British experience

Description: Among the many historical episodes that have relevance to the establishment of a human base, the voyages of Captain Cook, and the founding of Britain's Botany Bay colony in Australia seems particularly appropriate. The process resulting in the selection of Cook rewards study, as do his relations with the Admiralty, with the scientific establishment and with the scientists who accompanies him. Britain's tight control of the Botany Bay settlement and its unwillingness to promote early self-sufficiency may have delayed the time when Australia became self-supporting. Structuring the lunar base to offer opportunities for private initiatives may hasten the day when it becomes a self-supporting settlement rather than an externally supported scientific base on an Antarctic model.
Date: January 1, 1984
Creator: Jones, E.M. & Finney, B.R.
Partner: UNT Libraries Government Documents Department

Harnessing Data to Assess Equity of Care by Race, Ethnicity and Language

Description: Study examines disparities in healthcare based on race, ethnicity and language (REaL) by utilizing inpatient (IP) core measures at Texas Health Resources, a large, faith-based, non-profit healthcare system located in Texas.
Date: December 22, 2015
Creator: Gracia, Amber; Cheirif, Jorge; Veliz, Juana; Reyna, Melissa; Vecchio, Mara & Aryal, Subhash
Partner: UNT Health Science Center

A Computational Methodology for Addressing Differentiated Access of Vulnerable Populations During Biological Emergencies

Description: Mitigation response plans must be created to protect affected populations during biological emergencies resulting from the release of harmful biochemical substances. Medical countermeasures have been stockpiled by the federal government for such emergencies. However, it is the responsibility of local governments to maintain solid, functional plans to apply these countermeasures to the entire target population within short, mandated time frames. Further, vulnerabilities in the population may serve as barriers preventing certain individuals from participating in mitigation activities. Therefore, functional response plans must be capable of reaching vulnerable populations.Transportation vulnerability results from lack of access to transportation. Transportation vulnerable populations located too far from mitigation resources are at-risk of not being able to participate in mitigation activities. Quantification of these populations requires the development of computational methods to integrate spatial demographic data and transportation resource data from disparate sources into the context of planned mitigation efforts. Research described in this dissertation focuses on quantifying transportation vulnerable populations and maximizing participation in response efforts. Algorithms developed as part of this research are integrated into a computational framework to promote a transition from research and development to deployment and use by biological emergency planners.
Date: August 2014
Creator: O'Neill II, Martin Joseph
Partner: UNT Libraries

Range-wide success of red-cockaded woodpecker translocations.

Description: Edwards, John W.; Costa, Ralph. 2004. Range-wide success of red-cockaded woodpecker translocations. In: Red-cockaded woodpecker; Road to Recovery. Proceedings of the 4th Red-cockaded woodpecker Symposium. Ralph Costa and Susan J. Daniels, eds. Savannah, Georgia. January, 2003. Chapter 6. Translocation. Pp 307-311. Abstract: Red-cockaded woodpeckers (Picoides borealis) have declined range-wide during the past century, suffering from habitat loss and the effects of fire exclusion in older southern pine forests. Red-cockaded woodpecker translocations are a potentially important tool in conservation efforts to reestablish red-cockaded woodpeckers in areas from which they have been extirpated. Currently, translocations are critical in ongoing efforts to save and restore the many existing small populations. We examined the effects of demographic and environmental factors on the range-wide success of translocations between 1989 and 1995.
Date: December 31, 2004
Creator: Edwards, John W. & Costa, Ralph
Partner: UNT Libraries Government Documents Department

The National Laboratory Gene Library Project

Description: The two National Laboratories at Livermore and Los Alamos have played a prominent role in the development and application of flow cytometry and sorting to chromosome classification and purification. Both laboratories began to receive numerous requests for specific human chromosomal types purified by flow sorting for gene library construction, but these requests were difficult to satisfy due to time and personnel constraints. The Department of Energy, through its Office of Health and Environmental Research, has a long-standing interest in the human genome in general and in the mutagenic and carcinogenic effects of energy-related environmental pollutants in particular. Hence, it was decided in 1983 to use the flow construct chromosome-specific gene libraries to be made available to the genetic research community. The National Laboratory Gene Library Project was envisioned as a practical way to deal with requests for sorted chromosomes, and also as a way to promote increased understanding of the human genome and the effects of mutagens and carcinogens on it. The strategy for the project was developed with the help of an advisory committee as well as suggestions and advice from many other geneticists. 4 refs., 2 tabs.
Date: January 1, 1988
Creator: Deaven, L.L. & Van Dilla, M.A.
Partner: UNT Libraries Government Documents Department

Accommodation project for physically restricted personnel, Phase 1. Addendum: job-based criteria for nonskilled heavy laborers

Description: A study was conducted to determine possible accommodations for physically or medically restricted persons in the unskilled heavy labor group at Sandia National Laboratories. We conclude that only a very limited number of physically restricted persons might be accommodated under special conditions.
Date: August 1, 1982
Creator: Young, L. L., III & Mossman, P. B.
Partner: UNT Libraries Government Documents Department
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