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Body Image as Mediated by Age, Sex, and Relationship Status

Description: Traditionally, body image research has focused on young women. However, there are indications of cultural shifts which extend physical appearance pressures to both men and women, as well as to middle-aged and older adults. Two hundred and ten subjects were administered objective body image measures including the Figure Rating Scale, the Body Shape Questionnaire, and the Multidimensional Body-Self Relations Questionnaire, as well as projective measures including the Holtzman Inkblot Technique and the Draw-A-Person. The NEO-Five Factor Inventory and the Social Anxiety Subscale were also used to explore variables which might covary with body image. A 3 X 2 X 2 Multivariate Analysis of Covariance (MANCOVA) was utilized with social desirability as the covariate.
Date: December 1993
Creator: Cooper, Caren C. (Caren Connie)
Partner: UNT Libraries
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The Relationship between Self-Reported Bulimic Behavior and Cardiovascular Reactivity to a Weight Stressor

Description: This investigation sought to identify anxiety responses to weight measurement, assessed by verbal report and cardiovascular reactivity CCR3 (systolic blood pressure, diastolic blood pressure, heart rate), which might differentiate females with either high or low self-reported bulimic behavior. Secondar i ly,, the study attempted to examine specific autonomic nervous system (ANS) arousal patterns of each group over time. The Bulimia Test (BULIT), Body Dissatisfaction Scale (BD), and a demographic questionnaire were administered to 105 undergraduate females at The University of North Texas. Based on BULIT scores, females were divided into high or low bulimic behavior groups. Of the 105 females screened, forty participated in the experiment which consisted of four phases: relaxation, anticipation of weight measurement, weight measurement, and recovery. Subjects had no prior knowledge of the weight stressor until presentation during the experiment. Results showed that subjects' notion of ideal weight was substantially lower than measured weight. During weight measurement, all subjects reported increased anxiety although the high group reported significantly more anxiety. Contrary to prediction, no significant group differences in CR were found when repeated measures multivariate analysis of variance (MANOVA) was performed. Orthogonal polynomial trend analysis was done with pooled groups, resulting in significant within-subject trends for all cardiovascular measures. There was also a significant group by time of measurement interaction for heart rate during the weight measurement phase. Correlational analyses failed to produce significant results between verbal report of anxiety and CR. There was, however, a significant correlation between BULIT and BD scores. It was concluded that heightened subjective anxiety during weight measurement could not be attributed to group differences in CR. Regarding ANS arousal patterns, mixed evidence of active and passive coping was seen. Nevertheless, both psychological and physiological measures supported an overvaluation of female thinness consistent with societal trends regardless of group membership. Implications …
Date: August 1993
Creator: Marcontell, Deborah K. (Deborah Kay)
Partner: UNT Libraries
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Deterministic Brownian Motion

Description: The goal of this thesis is to contribute to the ambitious program of the foundation of developing statistical physics using chaos. We build a deterministic model of Brownian motion and provide a microscpoic derivation of the Fokker-Planck equation. Since the Brownian motion of a particle is the result of the competing processes of diffusion and dissipation, we create a model where both diffusion and dissipation originate from the same deterministic mechanism - the deterministic interaction of that particle with its environment. We show that standard diffusion which is the basis of the Fokker-Planck equation rests on the Central Limit Theorem, and, consequently, on the possibility of deriving it from a deterministic process with a quickly decaying correlation function. The sensitive dependence on initial conditions, one of the defining properties of chaos insures this rapid decay. We carefully address the problem of deriving dissipation from the interaction of a particle with a fully deterministic nonlinear bath, that we term the booster. We show that the solution of this problem essentially rests on the linear response of a booster to an external perturbation. This raises a long-standing problem concerned with Kubo's Linear Response Theory and the strong criticism against it by van Kampen. Kubo's theory is based on a perturbation treatment of the Liouville equation, which, in turn, is expected to be totally equivalent to a first-order perturbation treatment of single trajectories. Since the boosters are chaotic, and chaos is essential to generate diffusion, the single trajectories are highly unstable and do not respond linearly to weak external perturbation. We adopt chaotic maps as boosters of a Brownian particle, and therefore address the problem of the response of a chaotic booster to an external perturbation. We notice that a fully chaotic map is characterized by an invariant measure which is a continuous …
Date: August 1993
Creator: Trefán, György
Partner: UNT Libraries
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Job-Related Stressors as Perceived by the Directors and Full-Time Faculty of Accredited Educational Programs in Medical Record Administration and Medical Record Technology in the United States and Their Strategies for Coping with Them

Description: The purpose of this study was to: (1) identify the sources of job-related stress which create excessive pressures for the directors and faculty of medical record administration and medical record technology programs; (2) identify the strategies that the directors and faculty of medical record administration and medical record technology programs find most helpful in coping with stress; (3) determine the relationship among demographic variables and job-related stressors as perceived by the directors and faculty of medical record administration and medical record technology programs; and (4) determine the difference among the means of five stress factors as perceived by the directors of medical record administration, faculty of medical record administration, directors of medical record technology and faculty of medical record technology programs. Questionnaires were mailed to 403 respondents. The response rate was 81.3%. Within the limitations of this study, the results revealed that "Having insufficient time to keep abreast of current developments in my field"was the highest stressor. The top stress coping strategy was "Social interaction." The relationship between demographic variables and five stress factors of reward and recognition, time constraint, departmental influence, professional identity and student interaction revealed a positive correlation between degree and professional identity factor, and a negative correlation between degree and student interaction factor. The results also indicated a positive correlation between type of program and the factors-time constraint, professional identity and student interaction; a positive correlation between academic rank and the factors--time constraint and student interaction; a positive correlation between teaching responsibilities and time constraint factor; and a positive correlation between marital status and professional identity factor. The directors and faculty of medical record administration perception of time constraint and professional identity factors differed from that of the directors and faculty of medical record technology programs.
Date: August 1993
Creator: Mozie, David Ikechukwu
Partner: UNT Libraries
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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
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Characteristics of Administrative Leadership Behavior : A Comparative Study of Municipal and University Administrators

Description: The problem with which this study is concerned is comparative administrative leadership behavior between municipal and university administrators. The specially designed survey instrument elicited respondents' perceptions of their administrative leadership behavior based on the 12 dimensions of the Leader Behavior Description Questionnaire- XII.
Date: August 1993
Creator: Akidi, Valentine E. (Valentine Emeka)
Partner: UNT Libraries
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Structure and Performance of El Polifemo de Oro for Solo Guitar by Reginald Smith Brindle

Description: El Polifemo de Oro was written in 1956 and revised by the composer in 1981. This two-fold investigation clarifies the structure of El Polifemo through careful analysis of the work and its revision, and by Smith Brindle's approach to composition based on his interviews and books. The second aspect is aimed toward the pragmatic performance issues of tempo, articulation, timbre, voice leading, and the other details of execution. Although the work was written according to serial techniques, the presence, in the twelve-note row, of triadic formations (minor triad, dominant seventh, fully-diminished seventh) juxtaposed with many tritone intervals suggests the use of tonal devices, which Smith Brindle does employ to effect tension and relaxation. It is assumed that tonal devices such as leading tones, stepwise movement in the bass, fourth and fifth relationships, and triadic constructions are heard against a traditional contextual basis and are therefore ways of implying resolution. Where tonal devices are not present, other structural components, i.e., rhythm, dynamics, timbre, etc., are examined with regard to their functions in creating or dissipating tension. Following the analysis of each of the four fragments is a discussion of performance implications based on the analysis. Both the analysis and performance aspects are non-prescriptive and are presented in the spirit that there are many other valid interpretations.
Date: May 1993
Creator: LeBlanc, Paul G.
Partner: UNT Libraries
open access

The Role of Information in the Selection Process of a Primary Care Physician

Description: There is a paucity of information about the various factors that influence the selection of primary care physicians. Also, the relative significance of these factors is not known, making it difficult to properly address ways to improve the information flow to patients when they select a primary care physician.
Date: December 1993
Creator: Butler, E. Sonny
Partner: UNT Libraries
open access

Kinetic and Chemical Mechanism of O-Acetylserine Sulfhydrylase-B from Salmonella Typhimurium

Description: Initial velocity studies of O-acetylserine sulfhydrylase-B (OASS-B) from Salmonella typhimurium using both natural and alternative substrates suggest a Bi Bi ping pong kinetic mechanism with double substrate competitive inhibition. The ping pong mechanism is corroborated by a qualitative and quantitative analysis of product and dead-end inhibition. Product inhibition by acetate is S-parabolic noncompetitive, indication of a combination of acetate with E followed by OAS. These data suggest some randomness to the OASS-B kinetic mechanism. The pH dependence of kinetic parameters was determined in order to obtain information on the acid-base chemical mechanism for the OASS-B reaction. A mechanism is proposed in which an enzyme general base accepts a proton from α-amine of O-acetylserine, while a second enzyme general base acts by polarizing the acetyl carbonyl assisting in the β-elimination of the acetyl group of O-acetylserine. The ε-amine of the active site lysine acts as a general base to abstract the α-proton in the β-elimination of acetate. At the end of the first half reaction the ε-amine of the active site lysine that formed the internal Schiff base and the general base are protonated. The resulting α-aminoacrylate intermediate undergoes a Michael addition with HS‾ and the active site lysine donates its proton to the α-carbon to give cysteine and regenerate enzyme to start the second half reaction. In addition, substrate specificity, stereochemistry of the internal Schiff base at C4', and sequence around active site lysine of O-acetylserine sulfhydrylase-A have been determined. The [4'-^3H]pyridoxamine generated by reduction of the internal Schiff base with sodium [^3H]borohydride retained most of its tritium after incubation with apoaspartate aminotransferase. These results agree with the hypothesis put forth by Dunathan (Dunathan, 1971; Dunathan and Voet, 1974) that a single surface (Re face) of the active site PLP is accessible to solvent. The sequence around the active site …
Date: August 1993
Creator: Tai, Chia-Hui
Partner: UNT Libraries
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International Education Programs at Community Colleges in the State of Texas

Description: This study examined international education (IE) programs in Texas community colleges to determine how they compare to a general, theoretical model of IE programs discussed in the literature. The study proposed: (a) to describe, through a review of literature, the components of IE; (b) to describe the administration of IE within the Texas community colleges; (c) to identify existing IE instructional activities; (d) to describe the student support services related to IE which are in practice; (e) to describe what community and out of country outreach components are in operation; and (f) to determine how the IE programs in Texas community colleges compare to theoretical components of IE programs as identified in the literature.
Date: August 1993
Creator: Emerson, Mary L. (Mary Latrelle)
Partner: UNT Libraries
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The Effect of Age or Previous Post-Secondary Experience on Student Evaluation of Instruction

Description: The increase in the number of nontraditional aged undergraduate students (25 yrs. and older) and students transferring between post-secondary institutions has raised the question of whether effective instruction is viewed the same by these different groups of students. This study addressed this question by analyzing the responses of these different groups to 23 instructional questions on a standard faculty evaluation form.
Date: August 1993
Creator: Klassen, James E. (James Edward)
Partner: UNT Libraries
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An Analysis of Confidence Levels and Retrieval of Procedures Associated with Accounts Receivable Confirmations

Description: The study addresses whether differently ordered accounts receivable workprograms and task experience relate to differences in judgments, confidence levels, and recall ability. The study also assesses how treated and untreated inexperienced and experienced auditors store and recall accounts receivable workprogram steps in memory in a laboratory environment. Additionally, the question whether different levels of experienced auditors can effectively be manipulated is also addressed.
Date: December 1993
Creator: Rogers, Violet C. (Violet Corley)
Partner: UNT Libraries
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Solid State Diffusion Kinetics of Intermetallic Compound Formation in Composite Solder

Description: The Sn/Pb eutectic alloy system is the most widely used joining material in the electronics industry. In this application, the solder acts as both an electrical and mechanical connection within and among the different packaging levels in an electronic device. Recent advances in packaging technologies, however, driven by the desire for miniaturization and increased circuit speed, result in severe operating conditions for the solder connection. In an effort to improve its mechanical integrity, metallic or intermetallic particles have been added to eutectic Sn/Pb solder, and termed composite solders. It was the goal of this study to investigate the growth and morphology of the two intermetallic phases (Cu6Sn5 and Cu3Sn) that form between a Cu substrate and Sn/Pb solder under different aging and annealing conditions.
Date: May 1993
Creator: Sees, Jennifer A. (Jennifer Anne)
Partner: UNT Libraries
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Site Directed Mutagenesis of β-Ketoadipate Succinyl-Coenzyme A Transferase II from Acinetobacter Calcoaceticus

Description: The role of specific amino acid residues in β-ketoadipate succinyl-coenzyme A transferase II from Acinetobacter calcoaceticus was investigated. A 1412 base pair BamiHI-EcoRI fragment carrying the catIJ genes was amplified by polymerase chain reaction and inserted into pUCl9 to generate the plasmid pCATEl9. Escherichia coli DH5α (pCATEl9) carrying only the catlJ genes expressed 3-fold higher enzyme activity than the parent strain. Two mutants were constructed by site directed mutagenesis so that glutamate was replaced by a glutamine at positions Gln155 and Gln193 in the ß subunit of the primary amino acid sequence of the CoA transferase. Both mutants produced transferase that was catalytically active suggesting that Glu155 and Glu193 do not participate directly in catalysis.
Date: August 1993
Creator: Sheng, Mei
Partner: UNT Libraries
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Nesting Ecology and Reproductive Correlates in the Desert-nesting Gray Gull Larus Modestus

Description: General objectives of my study were to describe the reproductive ecology of gray gulls in the large Lealtad colony, with emphasis on demographic parameters and physiological adaptations of eggs and chicks, which would complete some original objectives established in the early 1980's by Guerra and Fitzpatrick. Specifically, my study focused on describing, then comparing with other desert and non-desert nesting larids, interactive effects of ambient physical conditions and nest-site predation on eggs and chicks.
Date: May 1993
Creator: Aguilar Pulido, Roberto E. (Roberto Eric)
Partner: UNT Libraries
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Population Policy Implementation and Evaluation in Less Industrialized Countries

Description: This study emphasizes the impact of family planning program components on contraceptive prevalence in less industrialized countries. Building on Lapham and Mauldin's "Program Effort and Fertility Decline" framework and policy evaluation's theory, the author developed two models to examine the impact of family planning programs on contraceptive prevalence and fertility under the constraints of socioeconomic development and demand for family planning. The study employed path analysis and multiple regression on data from the 1982 program effort study in 94 less developed countries (LDCs) by Lapham and Mauldin and 98 LDCs of the 1989 program effort study by Mauldin and Ross. The results of data analyses for all data sets are consistent for the most part. Major findings are as follows: (1) A combination of program effort and socioeconomic development best explains the variation of contraceptive prevalence. (2) Among socioeconomic variables, female literacy exerts the strongest direct and indirect influences to increase contraceptive prevalence and indirect influence to decrease total fertility rate. (3) Christianity performs a significant role in reducing contraceptive prevalence. (4) Among program effort components, availability and accessibility for fertility-control supplies and services have the most influence on contraceptive prevalence. (5) When controlling for demand for family planning, female literacy and Christianity have expected and significant relationships with contraceptive prevalence. Availability and accessibility to fertility-control supplies and services exerts a positive and statistically significant impact on contraceptive prevalence. Demand for family planning has a positive and statistically significant effect on program variables, availability, and contraceptive prevalence. (6) There is a strong inverse relationship between contraceptive use and fertility. Demand for family planning, program effort, and socioeconomic development influence fertility through contraceptive prevalence. The findings of this study suggest that governments in LDCs should give priorities to increasing female education and availability of contraception to effectively reduce fertility.
Date: August 1993
Creator: Sirirangsi, Rangsima
Partner: UNT Libraries
open access

Three Essays in Corporate Governance

Description: Corporate governance issues have become increasingly important to financial managers and shareholders. Firms that are plagued by poor performance, incompetent managers, or excess agency costs have become the subject of a dramatic increase in shareholder activism. Dissident shareholders, who are unable to launch costly takeover bids or proxy contests, have initiated a process of governance reform through the use of shareholder sponsored proposals. Shareholder proposals are a direct attempt to reverse operating or voting policies, such as a proposal to repeal a classified board. Managers announce shareholder proposals in a proxy statement and typically include a vote recommendation against the proposal. In the first essay, I find an unfavorable stock price reaction to the announcement of a shareholder proposal. In some cases, however, management supports the proposal and negotiates an agreement with the proposing shareholder. Stock prices react favorably to a settlement announcement. If managers are willing to negotiate with shareholders, they are perceived to be acting in the best interest of shareholders. If managers are unwilling, shareholders believe a severe agency problem exists. In the second essay, the effect that ownership structure has on voting outcomes of shareholder proposals is examined. I find a direct relationship between the percentage of votes cast in favor of the proposal and levels of institutional ownership. There is an inverse relationship between the percentage of votes and managerial ownership and firm size. Large firms with powerful owner-managers present the greatest obstacle to the success of shareholder proposals. The repeal of shareholder rights plans is one of the most frequently used shareholder proposals. By adopting the rights plan, managers increase the probability of defeating a takeover, but increase their power in negotiating with a potential acquiring firm. In the third essay, I find that firms who combine a rights plan with high debt levels …
Date: December 1993
Creator: Forjan, James M. (James Martin)
Partner: UNT Libraries
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A Comparison of the Personality Traits of Effective Teachers of Bilingual and English as a Second Language Students with the Personality Traits of Effective Teachers of Traditional Elementary School Students

Description: The purpose of this study was to identify the personality traits of effective elementary bilingual/ESL teachers, to identify the personality traits of effective traditional elementary teachers, and to compare the two groups.
Date: May 1993
Creator: Allgaier, Sylvia Mahon
Partner: UNT Libraries
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How Computer Use Functions as an Aspect of Literacy Development : A Qualitative Description of a Second-grade Classroom

Description: In this study, the researcher investigated how computer use functions as an aspect of literacy development within a second-grade classroom. The researcher sought to gather data to help define the role that computer use plays in the literacy development of elementary school students by concentrating on how computers are actually used in the classroom being studied, and by looking for relationships revealed by students' and teacher's beliefs about computer use in the classroom.
Date: December 1993
Creator: Kostelnik, Joyce L.
Partner: UNT Libraries
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Universal Branched Coverings

Description: In this paper, the study of k-fold branched coverings for which the branch set is a stratified set is considered. First of all, the existence of universal k-fold branched coverings over CW-complexes with stratified branch set is proved using Brown's Representability Theorem. Next, an explicit construction of universal k-fold branched coverings over manifolds is given. Finally, some homotopy and homology groups are computed for some specific examples of Universal k-fold branched coverings.
Date: May 1993
Creator: Tejada, Débora
Partner: UNT Libraries
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The Development of Predictive Models for the Acid Degradation of Chrysotile Asbestos

Description: The purpose of this study was to determine the factors affecting the acid degradation of chrysotile asbestos (Mg_3Si_2O_5(OH_4)) . Millions of tons of asbestos have found use in this country as insulative or ablative material. More than 95 percent of the asbestos in use is of the chrysotile variety. The remaining 5 percent is composed of various types of fibrous amphiboles. The inhalation of asbestos can lead to several diseases in humans. Asbestosis, lung cancer and mesothelioma are the most common afflictions associated with asbestos inhalation, and they may occur up to 40 years after the initial exposure. It has previously been reported that if more than 50 percent of the magnesium is removed from a chrysotile sample its carcinogenicity is reduced to nil. Several inorganic acids were studied to determine their ability to leach magnesium from chrysotile. It was found that the ability to leach magnesium was dependent upon the acidic anion in addition to the concentration of the acid. The ordering of the efficiency of the acids in their ability to remove magnesium from chrysotile was found to be HCl > H_2SO_4 > H_3PO_4 > HNO_3. Predictive equations were developed to allow the calculation of the amount of magnesium removed under various acid concentrations as a function of time and acid species. The effects of temperature and dissolved spectator cations upon the degradation process were also examined. There was no major effect on the amount of magnesium removed as a function of spectator cation concentration. An infrared method was also developed to allow the determination of the percent degradation of a chrysotile sample directly. The shifts in the positions of three silicate stretching peaks (1068 cm^-1, 948 cm^-1 and 715 cm^-1) and one magnesium oxygen stretching peak (415 cm"1) as a function of the percent magnesium removed were …
Date: May 1993
Creator: Ingram, Kevin D. (Kevin Dean)
Partner: UNT Libraries
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Adlerian Life Style and the Myers-Briggs Type Indicator

Description: The possibility of a relationship between Adlerian life style, as measured by the Life Style Personality Inventory (LSPI), and the Myers-Briggs Type Indicator (MBTI) was examined by this research. The goal of this study was to clarify the relationship between these instruments to broaden the applicability of both instruments for both research and clinical endeavors. Life style is a concept which is vital to therapeutic intervention from an Adlerian frame of reference. Assessment of life style typically involves lengthy therapist interviews. Both the LSPI and the MBTI are questionnaires designed to measure personality variables. The 117 subjects for this study were solicited from individuals seeking counseling from an urban community counseling center. The individuals served by this agency are primarily those diagnosed with Adjustment Disorders. The LSPI and the MBTI were administered individually to each subject. Means and standard deviations were computed for the seven LSPI themes and the MBTI total. Due to a lack of research support for Theme 4 by the LSPI author, the data for this theme were disregarded. The same research indicated a strong bipolar relationship for Themes 7 and 8 (Displaying Inadequacy and Social Interest), which prompted the inclusion of Theme 8 in subsequent data analysis. A correlation analysis was developed. Using the correlation matrix, a factor analysis program was run using the SPSS-X statistical package. The principal components analysis extracted three factors which were refined by a factor rotation using the varimax rotation option. To clarify Factor 3, further analysis was performed with the MBTI data divided by continuum and a second factor analysis was run. Four factors emerged from the data with Factors 1 and 2 remaining unchanged. Factor 1 (Emotional Focusing) and Factor 2 (Confrontation) were loaded with the LSPI themes. Factor 3 (Temperament) and Factor 4 (External-Internal) were loaded with the …
Date: May 1993
Creator: Doss, Carol Rose
Partner: UNT Libraries
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