UNT Theses and Dissertations - 269 Matching Results

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Computational Complexity of Hopfield Networks

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.
Date: August 1998
Creator: Tseng, Hung-Li
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Conceptual Structure of HIV+ Women With PTSD: Trauma Construct Elaboration

Description: Human immunodeficiency virus (HIV) can result in posttraumatic stress disorder (PTSD) as events related to illness act as traumatic stressors. This study tested some basic hypotheses of Sewell and Cromwell's personal construct model of PTSD in HIV+ women both with and without diagnoses of PTSD. Trauma-related constructs of HIV+ women with PTSD with HIV+ non-PTSD controls at varying stages of illness were compared. The elaboration, rankings, and valence of trauma-related constructs were examined… more
Date: August 1998
Creator: Jones, Deborah (Deborah Lynne), 1958-
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Contemporary Biology Curriculum for Non-majors

Description: The proposed biology curriculum for non-majors has one main objective, namely to improve scientific literacy among college students. The National Science Education Standards defines scientific literacy as "the knowledge and understanding of scientific concepts and processes required for personal decision making, participation in civic and cultural affairs, and economic productivity". The suggested strategies to accomplish this goal are to limit the number of topics covered, introduce relevant s… more
Date: August 1998
Creator: Smallwood, Susan
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Creating a Mythistory: Texas Historians in the Nineteenth Century

Description: Many historians have acknowledged the temptation to portray people as they see themselves and wish to be seen, blending history and ideology. The result is "mythistory." Twentieth century Texas writers and historians, remarking upon the exceptional durability of the Texas mythistory that emerged from the nineteenth century, have questioned its resistance to revision throughout the twentieth century. By placing the writing of Texas history within the context of American and European intellectual… more
Date: August 1998
Creator: McLemore, Laura Lyons, 1950-
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Dangerous Changes? The Effect of Political Regime Changes on Life Integrity Violations, 1977-1993

Description: This study develops a model of different types of political regime changes and their effect on life integrity violations. The data covers 147 countries from 1977-1993. Basic bivariate analyses and multivariate pooled cross-sectional time series analyses employing Ordinary Least Squares regression with panel-corrected standard errors are used. The results show that political regime change in general has no effect on state-sponsored violence. Looking at different types of regime changes, the regr… more
Date: August 1998
Creator: Zanger, Sabine C. (Sabine Carmen)
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Determinants of Refugee Production: an Exploratory Analysis

Description: The issue of refugees and the factors which result in forced migration are of growing importance. Currently, one in every 120 people is living outside of his or her nation of origin by force. There appears to be no end in sight to this situation. This paper seeks to examine conditions within a nation which contribute to the production of refugees. Using a model based on Clark's (1989) early warning system, this paper examines both proximate and root causes of refugee migration. The findings sug… more
Date: August 1998
Creator: Zottarelli, Lisa Katherine
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Development and Validation of a Two Factor Model of Adult Career Orientation

Description: Subjects in this study were 5,523 respondents from a survey which was sent to households throughout the United States. The purpose of this study was to examine two basic components of career orientation: career indecision and career insight. Correlational analyses found relationships between career indecision and average job tenure, industry leaving intentions, industry staying intentions, and job satisfaction. Correlational analyses found relationships between career insight, industry staying … more
Date: August 1998
Creator: Toofanian, Maryam
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Development of an In Vitro Protoplast Culture System for Albizia Lebek (L.) Benth., an Economically Important Leguminous Tree

Description: An in vitro system of generating protoplasts from their callus cultures was established. The friable callus was more productive in terms of producing protoplasts than the green compact callus. The concentration of the various cell wall degrading enzymes had an effect on the viability of the protoplasts in the medium. The protoplast system developed from the experiments was stable and could be used for the transformation experiments of Albizia lebek and for other plant improvement practices.
Date: August 1998
Creator: Sinha, Debleena
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Documentation of Biodiversity Impacts (Including Cumulative Biodiversity Impacts) in Environmental Impact Statements

Description: In the United States, biodiversity impact assessment has historically received little attention. Responding in 1993, the Council on Environmental Quality (CEQ) released guidelines on incorporating biodiversity into environmental impact assessment under the National Environmental Policy Act of 1969. The objectives of the study here were to identify the level of documentation of biodiversity impact assessment in sample Environmental Impact Statements (EISs); identify whether in the years followin… more
Date: August 1998
Creator: Bhatia, Sarika
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Drug Usage Among Community College Students: Their Knowledge, Attitudes, and Practices

Description: The problem of this study concerned illicit psychoactive drug use among community college students. A non-experimental design methodology, a survey, was used in this study. The population consisted of 149 students at 14 randomly selected public community college institutions throughout the United States. Three waves of mailings took place to increase response rate. Community college students appear to be knowledgeable regarding the deleterious physical and mental impact upon those who use drug… more
Date: August 1998
Creator: Reid, Sandra S. (Sandra Sue)
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The Effect of Study Skills Training Intervention on United States Air Force Aeromedical Apprentices

Description: The study examined the effects of a study skills training intervention course on U.S. Air Force Aeromedical Apprentices with five main purposes. The first was to examine the relationship between study skills training and the number of times students required academic interventions outside of normal class time. The second purpose was to examine the relationship between study skills training and end of course averages. The third was to determine the relationship between study skills training and … more
Date: August 1998
Creator: Griffith, John Clark
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Effectiveness of Group Supervision Versus Combined Group and Individual Supervision with Masters-Level Counselor Trainees

Description: This study was designed to investigate the effectiveness of large group supervision, small group supervision, and combined group and individual supervision on counselor trainees. Specifically, instruments were used to measure the progress in counselor efficacy and counselor development. Analyses of Covariance revealed that all supervision formats produced similar progress in counselor effectiveness and counselor development. Large group supervision, small group supervision, and combined group … more
Date: August 1998
Creator: Ray, Dee C. (Deanne Castleberry)
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The Effects of an Experimentally-Induced Bodily Focus Experience on a Psychotherapist during a Psychotherapy Session

Description: The purpose of this study is to contribute to the current process research by investigating a psychotherapist's experience during psychotherapy. Massage therapy and relaxation therapy were used to manipulate psychotherapist's bodily focus, physiology, and affective state. Topics discussed include: the bodily focus of the therapist, neurobiological models of experience, mind-body boundary issues, and a present-time focus. Doctoral level Counseling and Clinical graduate students were used as part… more
Date: August 1998
Creator: Koehler, Gregory C. (Gregory Charles)
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Effects of Experiential Focusing-Oriented Dream Interpretation

Description: This study was designed to examine the effects of Experiential Focusing-oriented dream interpretation. The process was twofold. The first part of this study involved a preliminary step of developing an instrument, the Dream Interpretation Effects Questionnaire (DIEQ). The DIEQ assessed specific effects of Experiential Focusing-oriented dream interpretation, e.g., a sense of easing, fresh air, or movement, increased positive energy or self-understanding, development of a new step, enhanced valua… more
Date: August 1998
Creator: Kan, Kuei-an
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The Effects of Forms, Reports, and Consequences on Homework Completion

Description: The purpose of this study was to analyze the effects of (1) training the accurate completion of an assignment form, (2) providing feedback on accurate reporting of homework completion, and (3) consequences for completion or non-completion of homework. All students exhibited highly accurate recording of information on assignment forms and reports of what homework had been completed or not completed. Delivering consequences for completion or non-completion of assignments had a modest effect on ho… more
Date: August 1998
Creator: Piland, Jill A. (Jill Anjanette)
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The Effects of Reduced Challenge at the Conclusion of Cognitive and Exercise Tasks

Description: Research has suggested that memories for difficult or painful experiences seem related to a combination of the worst and most recent moments. This peak-end theory was tested in relation to an exercise task (eccentric quadriceps using a BIODEX machine) as well as a cognitive task (standardized quantitative test questions). For each type of task there were two trials: short and happy endings. The happy endings trial included the same task as the short trial with an additional 25% duration at a le… more
Date: August 1998
Creator: Diehl, Nancy S. (Nancy Sue)
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Electroencephalographic Events During the Wisconsin Card Sorting Test

Description: Quantitative electroencephalography (QEEG) was used in this study to describe cognitive processing, particularly brain locations used, during performance of the Wisconsin Card Sorting Test (WCST). The hypothesis was that significant cognitive functioning is not limited to the frontal lobes. Significant EEG activity was found in non-frontal areas as well as frontal areas.
Date: August 1998
Creator: DeBeus, Mary
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An Empirical Investigation of Personal and Situational Factors That Relate to the Formation of Entrepreneurial Intentions

Description: New entrepreneurial organizations emerge as a result of careful thought and action. Therefore, entrepreneurship may be considered an example of planned behavior. Previous research suggests that intentions are the single best predictor of planned behavior. Given the significance of intentions, the purpose of this study was to investigate the relationships between the personal characteristics of the entrepreneur and perceived environmental factors, and entrepreneurial intentions.
Date: August 1998
Creator: Summers, David F. (David Frederic), 1948-
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Estimated Extent and Fate of Chlorinated Solvent Contamination in the Soil of the Naval Air Station, Dallas, Texas

Description: This thesis estimates the spatial extent of chlorinated solvent contamination of the soil at the Naval Air Station, Dallas, then estimates the fate and transport of these contaminants, over time, using the Soil Transport and Fate database and the Vadose-Zone Interactive Processes (VIP) modeling software. Geostatistical analysis identifies two areas with serious chlorinated solvent contamination. Fate and transport modeling estimates that this contamination will degrade and disperse from the soi… more
Date: August 1998
Creator: Trescott, Jill V. (Jill Virginia)
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Evaluation of Sequential Events in Phagocytosis by Earthworm Coelomocytes as Potential Immunotoxicity Biomarkers

Description: This research evaluated the potential of activation and attachment, as sequential companion biomarkers of phagocytosis by earthworm, Lumbricus terrestris, immunoactive coelomocytes for use in immunotoxicology. The potential was assessed by exposing earthworms to sublethal concentrations of CuSO4 and Arochlor 1254®, chemicals used as reference or standard immunotoxicants.
Date: August 1998
Creator: Murray, Stephanie Mae
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An Examination of the Criterion-Related Validity of a Developmental Assessment Center

Description: The purpose of this study was to investigate the criterion-related validity of an assessment center's competency dimension ratings, exercise ratings, and standardized test scores. Numerous studies have clearly demonstrated assessment centers display substantial evidence of content and criterion-related validity. However, the inability of assessment centers to display construct-related validity has caused a great deal of concern among researchers. The suggestions of these researchers are address… more
Date: August 1998
Creator: Yurkon, Andrew C.
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Filial Therapy with Non-Offending Parents of Children Who Have Been Sexually Abused

Description: This study was designed to determine the effectiveness of filial therapy as a method of intervention for non-offending parents and their children who have experienced sexual abuse. Filial therapy is a didactic/dynamic approach used by play therapists to train parents to be therapeutic agents with their children. Parents are taught basic child-centered play therapy skills and the utilization of these skills in weekly play sessions with their children. Parents learn to create a special environmen… more
Date: August 1998
Creator: Costas, Mary Bassett
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