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Simulating Thermal and Chemical Spills in Coupled Cooling Reservoirs

Description: Hot water discharges and potential chemical spills are factors that threaten water quality in cooling reservoirs of chemical and power plants. In this thesis, three models are used to analyze the impact of these factors in a particular case study.
Date: August 1997
Creator: Qiu, Bin
Partner: UNT Libraries
open access

Children's Perceptions of Family Environment in Step and Intact Families

Description: This purpose of this research study was to identify key differences that distinguish stepfamilies from intact families with regard to individual members' perceptions of family environment and family functioning. Additionally, an initial look at how membership in a stepfamily impacts the young children's perceptions of interpersonal family functioning is offered.
Date: August 1994
Creator: Elliott, Lisa M.
Partner: UNT Libraries
open access

Effects of Meal Size and Type, and Level of Physical Activity on Perceived Masculinity, Femininity, Likability and Attractiveness

Description: Previous research indicates that women are judged on the amount of food eaten and that both men and women are judged on the type of food eaten. This study is an attempt to determine whether meal size or type predominantly accounts for these findings on the variables of masculinity, femininity, attractiveness, thinness, fitness, and likability. Physical activity was also included to determine its effect on these variable. Subjects used were 313 undergraduate students. Results indicate that meal … more
Date: December 1994
Creator: Hill, Christie D.
Partner: UNT Libraries
open access

Determinants of the Magnitude of Foreign Direct Investment: An Analysis of Korean Manufacturing MNCs

Description: The purpose of this study is, therefore, to investigate empirically the firm- and location-specific determinants of the magnitude of FDI by Korean manufacturing MNCs--one of the leading Third World MNCs. This study also examines firm-specific characteristics that distinguish Korean MNCs investing in developing countries from those investing in developed countries.
Date: December 1993
Creator: Kim, Seong-Soo
Partner: UNT Libraries
open access

Thermodynamic Properties of Nonelectrolyte Solutes in Ternary Solvent Mixtures

Description: The purpose of this dissertation is to investigate the thermodynamic properties of nonelectrolyte solutes dissolved in ternary solvent mixtures, and to develop mathematical expressions for predicting and describing that behavior in the solvent mixtures. Thirty-four ternary solvent systems were studied containing either alcohol (1-propanol, 2-propanol, 1-butanol, and 2-butanol), alkane (cyclohexane, heptane, and 2,2,4-trimethylpentane) or alkoxyalcohol (2-ethoxyethanol and 2-butoxyethanol) cosol… more
Date: August 1999
Creator: Deng, Tʻai-ho
Partner: UNT Libraries
open access

Was Ist Silvia? Englanderin Oder Deutsche? Restoring the Orignial English Texts to Songs Schubert Set in Translation, a Lecture Recital, Together with Three Recitals of Selected Works of H. Purcell, G. F. Handel, W. A. Mozart, F. Schubert, J. Brahms, H. Wolf, F. Poulenc and Others

Description: Because of the lack of information concerning the success or failure of Schubert's bilingual edition and concerning the relationship between the English texts and Schubert's settings, most performers take the conservative route of performing both the songs from Lady of the Lake and the rest of Schubert's English song repertoire only with the German translations. Because of the desirability of performing this repertoire in English for English-speaking audiences, this study examines all of the En… more
Date: May 1995
Creator: Bolthouse, Colleen R.
Partner: UNT Libraries
open access

The message and ministry of Howard G. Hendricks in Christian higher education

Description: Howard G. Hendricks influenced generations of leaders in Christian education during the last half of the 20th century through the practical communication of his unique message and the personal nature of his teaching ministry. This study explored his life through interpretive biography, compared his message with current models of secular and religious education, and evaluated his ministry through case study research. Hendricks has contributed to the field of Christian higher education through t… more
Date: May 2001
Creator: Lincoln, Lawrence H.
Partner: UNT Libraries
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Effects of Copper on Immune Responses of Largemouth Bass, Micropterus salmoides

Description: Copper exposures of 400 μg/L for 5,10 and 15 days resulted in no significant differences in antibody titers of largemouth bass, Micropterus salmoides injected with Aeromonas hydrophila compared to control-injected bass. Twenty days of exposure did significantly increase titers. The control group had significantly lower antibody titers than either control-injected or copper-exposed.
Date: August 1994
Creator: Connell, Patrice M. (Patrice Michelle)
Partner: UNT Libraries
open access

Distorted Time Perception as an Underlying Factor of Psychosis Proneness and Dissociation

Description: Distortions in the perception of time historically have been associated with dissociation and psychosis in clinical populations. However, the relations among dissociation, psychosis, and time perception in sub-clinical populations have not been investigated. In the present study, college undergraduates scoring either normally or deviantly high on the Per-Mag were given a Dissociative Experiences Scale (DES) and a computerized time-estimation/production task. Participants scoring high on the Per… more
Date: August 1995
Creator: Koehler, Gregory C. (Gregory Charles)
Partner: UNT Libraries
open access

Family and Self-concept Factors Contributing to the Adjustment and Achievement of Early Entrants

Description: The purpose of this study was to investigate the role of students' self-concept and their perceptions of family environment in the psychosocial adjustment and academic achievement of accelerated college students in a residential program. A secondary purpose was to investigate the differential role of those factors for students of diverse ethnic backgrounds.
Date: December 1996
Creator: Caplan, Sheryl Mink
Partner: UNT Libraries
open access

Construction of a Physical Map of Moraxella (Branhamella) catarrhalis Strain ATCC25238

Description: In order to gain a better understanding of this microorganismand its role in human pathogenesis, a physical map of Moraxella catarrhalis type strain ATCC25238 was constructed using pulsed field gel electrophoresis (PFGE) in combination with Southern hybridization techniques. Restriction endonucleases Not I, Rsr II, and Sma I were used to digest the chromosomal DNA. An overlapping circular map was generated by cross-hybridization of isolated radiolabeled fragments of Moraxella catarrhalis genomi… more
Date: May 1999
Creator: Nguyen, Kim Thuy
Partner: UNT Libraries
open access

Upper and Lower Temperature Tolerances of Three Freshwater Game-Fish Species Exposed to Cycling Temperatures

Description: A total of 670 critical thermal maxima (CTMax) and minima (CTMin) were determined for three freshwater fishes acclimated to three constant temperatures and a diel regimen cycling between the lowest and highest acclimation temperatures. In all species temperature tolerance was directly related to acclimation temperature and slopes relating these variables indicate that acclimation temperature has a greater influence on tolerance of low rather than high temperatures. CTMax and CTMin values genera… more
Date: August 1995
Creator: Currie, Rebecca J. (Rebecca Jean)
Partner: UNT Libraries
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Attenuation of Escherichia Coli Aspartate Transcarbamoylase Expressed in Pseudomonas Aeruginosa Mutant and Wild Type Strains

Description: No apparent repression of pyr gene expression in Pseudomonas aeruginosa is observed upon addition of exogenous pyrimidines to the growth medium. Upon introduction of the subcloned Escherichia coli pyrBI genes for aspartate transcarbamoylase (ATCase) into a P. aeruginosa pyrB mutant strain, repression was observed in response to exogenously fed pyrimidine compounds. The results proved that it is possible to bring about changes in pyrimidine nucleotide pool levels and changes in transcriptional r… more
Date: December 1994
Creator: Liu, Haiyan, 1966-
Partner: UNT Libraries
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Evaluation of a Constructed Wetland to Reduce Toxicity from Diazinon at the Pecan Creek Wastewater Treatment Plant, Denton, TX

Description: The City of Denton Pecan Creek Wastewater Treatment Facility has periodically failed effluent toxicity testing. A Toxicity Identification Evaluation has determined that Diazinon in the effluent is contributing to the observed toxicity. Chlorpyrifos is also implicated as a factor. The City of Denton constructed a half acre experimental wetland to remove Diazinon related toxicity. Results from spiking and microcosm experiments indicate that the wetland can reduce the Diazinon.
Date: May 1996
Creator: Baerenklau, Amy L. (Amy Lyn)
Partner: UNT Libraries
open access

Disclosure and its Perceived Impact as Mediators of the Long-Term Consequences of Child Sexual Abuse

Description: The primary purpose of the present study was to investigate factors associated with childhood sexual abuse which mediate long-term effects. Of particular interest were the mediators of disclosure and its perceived impact, as well as variables related to the severity of the abuse. Also of interest were impact areas related to a history of molestation which have received little attention in the literature. Five hundred and seventy-five female undergraduates completed an extensive questionnaire wi… more
Date: October 1992
Creator: Phelan-McAuliffe, Debra
Partner: UNT Libraries
open access

The Effects of Alternative Presentation Formats on Biases and Heuristics in Human Decision Making

Description: The purpose of this research was to determine whether changes in the presentation format of items in a computer display could be used to alter the impact of specific cognitive biases, and to add to the knowledge needed to construct theory-based guidelines for output design. The problem motivating this study is twofold. The first part of the problem is the sub-optimal decision making caused by the use of heuristics and their associated cognitive biases. The second part of the problem is the lack… more
Date: May 1996
Creator: Van Dyke, Thomas P. (Thomas Peter)
Partner: UNT Libraries
open access

Timed vs. Untimed Initiation Intervals and the Effects of Confidence on a Golf Putting Task

Description: Low, moderate, and high handicap golfers, while wearing glasses with a blinder on the side, attempted 9 putts differing in length from 5 to 21 ft under timed (less than 3.5s from grounding of club to initiation of back swing) and untimed conditions in a counterbalanced design. Confidence ratings were taken prior to and following each putt. The results revealed a significant condition by handicap group interaction (p=.021). The lower handicap group had a more consistent and lower initiation inte… more
Date: August 1999
Creator: Sundberg, Jeffrey D.
Partner: UNT Libraries
open access

Characteristics of Intensive English Program Directors

Description: The purpose of this study is to discover if there exists a difference between the perceived roles and functions of intensive English program (IEP) directors and what they actually are. The study is a partial replication of Matthies (1983). A total of 46 subjects participated in a nation-wide survey which asked the respondents to rate the importance of functions and skills in good job performance and in self-assessment of ability. The findings indicated that IEP directors rate the activities ass… more
Date: August 1994
Creator: Atkinson, Tamara D. (Tamara Dawn)
Partner: UNT Libraries
open access

Rollback Reduction Techniques Through Load Balancing in Optimistic Parallel Discrete Event Simulation

Description: Discrete event simulation is an important tool for modeling and analysis. Some of the simulation applications such as telecommunication network performance, VLSI logic circuits design, battlefield simulation, require enormous amount of computing resources. One way to satisfy this demand for computing power is to decompose the simulation system into several logical processes (Ip) and run them concurrently. In any parallel discrete event simulation (PDES) system, the events are ordered according … more
Date: May 1996
Creator: Sarkar, Falguni
Partner: UNT Libraries
open access

Detection of Malingering on Raven's Standard Progressive Matrices and the Booklet Category Test

Description: The capacity of Raven's Standard Progressive Matrices (SPM) and the Booklet Category Test (BCT) to discriminate between groups of brain-injured, simulated malingering, and normal participants was investigated in this study. Exploratory analyses were also conducted to examine the differences between groups categorized as sophisticated and naive fakers. Clinical decision rules and discriminant function analyses were utilized to identify malingerers. Clinical decision rules ranged in hit rates fro… more
Date: December 1997
Creator: Isler, William C. (William Charles)
Partner: UNT Libraries
open access

Heat Shock Proteins in Ascaris suum

Description: Ascaris suum were exposed to a number of stressors, including heavy metals and both high (40°C) and low (18°C) temperatures. The 70kD and 90kD heat shock proteins (HSPs) in the different A. suum tissues were analyzed by Western blot and quantitated by Macintosh Image Program.
Date: August 1995
Creator: Chao, Sheng-Hao
Partner: UNT Libraries
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