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Mobile Order Theory as Applied to Polycyclic Aromatic Heterocycles

Mobile Order Theory as Applied to Polycyclic Aromatic Heterocycles

Date: August 1997
Creator: Fletcher, Kristin A.
Description: Experimental mole fraction solubilities of benzil, thianthrene, trans-stilbene, thioxanthen-9-one, diphenyl sulfone and dibenzothiophene sulfone are determined in pure noncomplexing and complexing solvents. Predicted solubility values are calculated for benzil, thianthrene, trans-stilbene and thioxanthen-9-one using expressions derived from Mobile Order theory. Large deviations between experimental and predicted solubilities in alcohol solvents exist, therefore optimized solute - solvent association constants are determined. Previously measured thianthrene solubilities in five binary alkane + cyclohexane solvent mixtures are compared with values predicted from Mobile Order theory using the measured solubility in each of the pure solvents as input parameters. The experimental mole fraction solubility of benzil in eight binary alcohol + 1-octanol solvent mixtures are also measured and compared with predicted values.
Contributing Partner: UNT Libraries
Distribution and Probable Sources of Nitrate in the Seymour Aquifer, North Central Texas, USA

Distribution and Probable Sources of Nitrate in the Seymour Aquifer, North Central Texas, USA

Access: Use of this item is restricted to the UNT Community.
Date: May 2001
Creator: Hillin, Clifford K.
Description: This study utilized GIS and statistical methods to map the spatial variability of nitrate and related groundwater constituents in 30 counties above the Seymour Aquifer, analyze temporal patterns of nitrate pollution, identify probable sources of pollution, and recommend water development strategies to minimize exposure to nitrate and reduce future aquifer contamination. Nitrate concentrations in excess of 44 mg/L (US EPA limit) were commonly observed in the Seymour Aquifer region, especially in the central agricultural belt. Data indicated that this is an ongoing problem in the Seymour Aquifer and that agricultural activity and rural septic systems are the likely sources of the nitrate. Inconclusive results emphasized the need for a more comprehensive spatial and temporal water quality monitoring.
Contributing Partner: UNT Libraries
Computational Complexity of Hopfield Networks

Computational Complexity of Hopfield Networks

Date: August 1998
Creator: Tseng, Hung-Li
Description: There are three main results in this dissertation. They are PLS-completeness of discrete Hopfield network convergence with eight different restrictions, (degree 3, bipartite and degree 3, 8-neighbor mesh, dual of the knight's graph, hypercube, butterfly, cube-connected cycles and shuffle-exchange), exponential convergence behavior of discrete Hopfield network, and simulation of Turing machines by discrete Hopfield Network.
Contributing Partner: UNT Libraries
"Stately Temples": Consubstantiality and Consciousness in Frances E. W. Harper's Iola Leroy; or Shadows Uplifted

"Stately Temples": Consubstantiality and Consciousness in Frances E. W. Harper's Iola Leroy; or Shadows Uplifted

Date: August 1996
Creator: Louis-Ray, Deborah
Description: The purpose of this master's thesis is to examine Frances Harper's narrative strategy and moral didacticism in Iola Leroy: or Shadows Uplifted (1892) as she strives to achieve consubstantiality and a "heightened consciousness" within her characters and her audience while adhering to the literary and feminist paradigms of the late nineteenth century. Harper identifies with her African-American male audience's dilemma of "double-consciousness" and their veil of androcentrism. She also identifies with her Euro-American female audience's delicate and matriarchal roles, while also attempting to uplift their position of the "Other" to the "One." Finally, with her African-American female audience, Harper identifies with their complex situatedness of "double-consciousness" and the "Other," while also attempting to uplift them from a historically imposed position of selflessness to one of empowerment.
Contributing Partner: UNT Libraries
Relationships among and Between Alcohol Consuption Rates, Alcohol Expectancies, and Early Recollections among Three Groups of College Males

Relationships among and Between Alcohol Consuption Rates, Alcohol Expectancies, and Early Recollections among Three Groups of College Males

Date: December 1998
Creator: Taylor, Angela D. (Angela Denise)
Description: Extensive documentation exists which firmly establishes the high use rates and disastrous consequences of alcohol consumption by university students. Use rates for this population have been linked to attitudes toward alcohol consumption, especially alcohol expectancies. Research to date on alcohol expectancies has shown differences in expectancies among various groups. However much of this research has been conducted without a theoretical basis, accomplishing little in explaining how beliefs and drinking behavior are related. The investigation was designed to explore the relationships among and between early recollections and alcohol expectancies and to explore how the contents of early recollections function in relation to expectancies in terms of alcohol consumption patterns among three groups of college males (student-athletes, fraternity men, and independents). The content of individuals' early recollections was analyzed and compared to expectancies and consumption rates for each of the three groups. The study addressed seven hypotheses regarding alcohol consumption rate comparisons, comparisons of consequences experienced as a result of alcohol consumption, comparisons of alcohol expectancies, and comparisons of reported content of early recollections. Multiple regression analysis was utilized to test the extent to which select early recollections and alcohol expectancy scores contributed to the explained variance in alcohol consumption patterns.
Contributing Partner: UNT Libraries
Advanced Molecular and Microbial Techniques: a Complete Laboratory Notebook

Advanced Molecular and Microbial Techniques: a Complete Laboratory Notebook

Date: May 1998
Creator: Brito-Rodriquez, Carmen Lydia
Description: The purpose of this project is to produce a complete and thorough notebook that may be used to supplement laboratory coursework. Its intent is to be used primarily by the students to aid them in understanding background information and the proper laboratory procedures involved in various types of experiments. The laboratory notebook is a summation of all the experiments and procedures used in the six-credit hour Advanced Microbial and Molecular Biology (BIOL 5160) course offered during the summer semester at the University of North Texas. This class is a team taught effort by Professors O'Donovan and Kunz. The course is constructed as an intensive practice exercise to teach the student about gene mutations, biosynthetic pathways, preparation and analysis of plasmid DNA, and many other topics included in the notebook.
Contributing Partner: UNT Libraries
Existence of Many Sign Changing Non Radial Solutions for Semilinear Elliptic Problems on Annular Domains

Existence of Many Sign Changing Non Radial Solutions for Semilinear Elliptic Problems on Annular Domains

Date: August 1998
Creator: Finan, Marcel Basil
Description: The aim of this work is the study of the existence and multiplicity of sign changing nonradial solutions to elliptic boundary value problems on annular domains.
Contributing Partner: UNT Libraries
Fluency Training as a Pedagogical Tool to Improve Performance of Undergraduate Students Enrolled in the First Financial Accounting Course at a Regional Oklahoma University

Fluency Training as a Pedagogical Tool to Improve Performance of Undergraduate Students Enrolled in the First Financial Accounting Course at a Regional Oklahoma University

Date: December 1998
Creator: Huffman, William E. (William Eugene)
Description: This study contributes to the debate on accounting pedagogy in the basic financial accounting course by examining the pedagogical tool of fluency training as a way to improve student performance. Fluency training has been shown to improve performance of students in other academic disciplines.
Contributing Partner: UNT Libraries
Strategy, Structure, and Performance of U.S.-Based Multinational Organizations: A Fit Theory Study

Strategy, Structure, and Performance of U.S.-Based Multinational Organizations: A Fit Theory Study

Date: August 1997
Creator: Blackwell, Rodney D. (Rodney Dean)
Description: The research question addressed by the study asks, "Is international integration strategic and departmental structural fit a predictor of performance in U.S.-based, single-business multinational organizations?" The study is designed to extend existing research in international integration strategy, which is often called "global strategy," "globalization," or "internationalization" in the popular press and academic research literature.
Contributing Partner: UNT Libraries
Parents' Divorce Affect upon Children: Mothers' Perceptions

Parents' Divorce Affect upon Children: Mothers' Perceptions

Date: December 1995
Creator: Grubbs, Jerianne C. (Jerianne Christina)
Description: This study will attempt to identify the reported problem behavior in children impacted by parental divorce. Further, it will try to determine whether pre-divorce interparental conflict, time spent with the mother, and the mother's adjustment affects the problem behavior reported for children. The following analytic techniques will be used: frequency distributions, t-tests, correlations, and regression.
Contributing Partner: UNT Libraries