UNT Theses and Dissertations - 273 Matching Results

Search Results

An Examination of the Nature of a Problematic Consumer Behavior : Compulsive Purchasing as a Learned Adaptive Response, Addiction, and Personality Disorder

Description: The problem examined in this study was the nature of compulsive purchasing behavior. Three proposed models depicting this behavior as a learned adaptive response to anxiety and/or depression, an addiction, and a personality disorder were introduced and discussed in Chapter I. Background information concerning the areas examined in the models was presented in Chapter II. The research methodology was discussed in Chapter III and the findings of the research presented in Chapter IV. A summary, conclusions, implications, and recommendations were presented in Chapter V.
Date: August 1989
Creator: Briney, Alicia L. (Alicia Lyn)
Partner: UNT Libraries

Schoenberg's Janus-Work Erwartung: Its Musico-Dramatic Structure and Relationship to the Melodrama and Lied Traditions

Description: Arnold Schoenberg's atonal monodrama, Erwartune. Op. 17 (1909). has been viewed as an unanalyzable athematic aberration, without any discernible form. Recognizing Erwartune's forward-looking aspect, this dissertation also explores the melodrama and the Lied, a connection with the past which forges a new understanding of its form and structure.
Date: December 1989
Creator: Penney, Diane Holloway
Partner: UNT Libraries

Measurement of Feedback Inhibition In Vivo and Selection of ATCase Feedback Altered Mutants in Salmonella typhimurium

Description: Aspartate transcarbamoylase (ATCase; encoded by pyrBI genes) is one of the most studied regulatory enzymes in bacteria. It is feedback inhibited by cytidine triphosphate (CTP) and activated by adenosine triphosphate (ATP). Much is known about the catalytic site of the enzyme, not nearly as much about the regulatory site, to which CTP binds. Until now a positive selection for feedback-modified mutants was not available. The selection we have developed involves the use of a pyrA deletion in S. typhimurium. This strain lacks carbamoylphosphate and requires both a pyrimidine and arginine for growth. In this strain citrulline is used to satisfy the pyrimidine and arginine requirements. The minimal flow through the pyrimidine pathway from the citrulline-produced carbamoylphosphate is exquisitely sensitive to feedback control of ATCase by CTP. By elevating the CTP pool, via exogenous cytidine, in a strain that also contains a cytidine deaminase mutant (cdd) growth can be stopped completely, indicating 100% inhibition. It was therefore possible to measure in vivo feedback inhibition of ATCase among the citrulline users and to isolate a family of ATCase regulatory mutants with either modified or no response to effectors.
Date: August 1989
Creator: Bailey, Andrea J., 1952-
Partner: UNT Libraries

Antoine Reicha's Theories of Musical Form

Description: Antoine Reicha stands as an important figure in the growing systematization of musical form. While Traite de melodie (1814) captures the essence of eighteenth-century concern with tonal movement and periodicity, Reicha's later ideas as represented in Traite de haute composition musicale (1824-26) anticipate descriptions of thematic organization characteristic of his nineteenth-century successors. Three important topics emerge as crucial elements: melody, thematic development, and schematic categorization of complete pieces.
Date: December 1989
Creator: McCachren, Jo Renee
Partner: UNT Libraries

Beethoven's Transcendence of the Additive Tendency in Opus 34, Opus 35, Werk ohne Opuszahl 80, and Opus 120

Description: The internal unity of the themes in a sonata-allegro movement and the external unity of the movements in a sonata cycle are crucial elements of Beethoven's compositional aesthetic. Numerous theorists have explored these aspects in Beethoven's sonatas, symphonies, quartets, and concertos. Similar research into the independent variation sets for piano, excluding Opus 120, has been largely neglected as the result of three misconceptions: that the variation sets, many of which were based on popular melodies of Beethoven's time, are not as worthy of study as his other works; that the type of hidden internal relationships which pervade the sonata cycle are not relevant to the variation set since all variations are, by definition, related to the theme; and that variations were composed "additively," that is, one after another, without any particular regard for their order or relationship to one another. The purpose of this study is to refute all three of these incorrect assumptions. Beethoven was concerned with the order of variations and their relationship to one another, and he was able to transcend the additive tendency in a number of ways. Some of his methods included registral connection, registral expansion, rhythmic acceleration, textural expansion, dynamics, articulation, and motivic similarities. Chapter I contains a discussion of the role of the variation set in Beethoven's overall output. The teachers, composers, and works which may have influenced him are also discussed as well as his training in variation composition. Finally, those factors which Beethoven employed to unify his sets are listed and explained. Chapters II-V are devoted to detailed analyses of four striking variation sets: Opus 34, Opus 35, WoO 80, and Opus 120. Chapter VI presents a summary of the findings. It suggests that each of the sets investigated has a unique form and that each variation has a distinct place ...
Date: December 1989
Creator: Kramer, Ernest J. (Ernest Joachim)
Partner: UNT Libraries

The Influence of Selected Factors on Nonpersistence of Nontraditional Students at a Comprehensive Community College

Description: The purpose of the study was to determine the direct influences of selected environmental, academic, and background factors as well as academic outcomes and expression of intent to leave on persistence or non-persistence of nontraditional students at a comprehensive community college in the Dallas County Community College District. The study applied a conceptual model of nontraditional undergraduate student attrition. Data for this study were collected during the Fall, 1987 semester from 312 first-year nontraditional students using the two-year institution questionnaires from the National Center for Higher Education Management Systems. In addition, follow-up surveys were administered to the 97 students who did not re—enroll for the Spring, 1988 semester. The data were analyzed using discriminant function, chi square, and product-moment correlation. For these nontraditional students, educational goal commitment, cumulative grade point average (GPA) and expression of intent to leave at the end of the semester had significant direct influence on persistence or non-persistence decisions. In contrast, environmental factors such as finances, employment status, and family responsibilities, and background factors such as high school academic performance, enrollment status and parents' education level did not directly influence dropout decisions. Nontraditional students reported receiving moderate to high levels of encouragement to remain in college from outside sources, especially employers. In spite of this encouragement, a frequent reason given for leaving college was the inability to cope with working and going to school at the same time. The results generally confirmed that the conceptual model used in this study provided a valid framework for research on nontraditional student attrition. Accurate prediction of persistence or non-persistence of nontraditional students in a community college appears quite difficult due to the heterogeneity of this student population and their diverse educational goals.
Date: May 1989
Creator: Laman, Michael A. (Michael Alan)
Partner: UNT Libraries

Teacher Education Programs in Member Institutions of the Association of Christian Schools International (ACSI): a Comparison With NCATE Standards

Description: The problem of this study concerns the structure and content of teacher education programs in colleges and universities which are members of the Association of Christian Schools International (ACSI). A questionnaire was developed and consisted of four sections: (1) general background information of the respondent; (2) questions relating to the live NCATE standards using a Likert scale of 1 to 3, regarding respondent's teacher education program; (3) general information concerning Bible credit hours required, critical problems and factors considered in job placement of graduates; and (4) an opinionnaire concerning current issues in teacher education, significant changes in respondents' programs and cooperative and unusual program arrangements. One hundred questionnaires were mailed to the 100 collegiate members of ACSI in 1987. Of the 75 returned, 57 were usable. This represents a 57 percent response rate. Based on the information provided by the chairpersons participating in the study, the following conclusions are drawn relative to ACSI teacher education programs: 1. The influence of an outside agency, such as the National Council for the Accreditation of Teacher Education (NCATE), seems to benefit teacher education programs. 2. State accreditation of teacher education programs appears to be important to both NCATE and non-NCATE accredited programs. 3. Of the five NCATE standards, knowledge base for professional education was the standard that seemed to be the strongest to ACSI collegiate members. 4. ACSI schools emphasize biblical and theological education concurrent with teacher education. 5. Institutions with NCATE accredited programs seem to be satisfied with NCATE accreditation, although institutions with non-NCATE accredited programs seem to favor additional accreditation from an organization other than NCATE. 6. The small number of ACSI programs accredited by NCATE may be due to (1) theological conflicts, (2) fiscal requirements, (3) the amount of work involved in the accreditation process, or any combination of the ...
Date: May 1989
Creator: Kivioja, Larry A. (Larry Albert)
Partner: UNT Libraries

The Effect of Sequencing Microeconomics and Macroeconomics on Learning

Description: The purpose of this study was to determine the effect on student learning from the sequence in which microeconomics and macroeconomics courses are taken. The sample for this study consisted of all students enrolled in 23 sections of Economics 1100 (Principles of Microeconomics) and 10 sections of Economics 1110 (Principles of Macroeconomics) during the fall semester, 1987, at the University of North Texas. The sample also consisted of all students enrolled in 14 sections of Economics 1100 and 12 sections of Economics 1110 during the spring semester, 1988, at the University of North Texas. The instruments chosen for use in measuring cognitive gains were two versions, each with 14 items, selected from the Joint council on Economic Educations's Revised Test of Understanding College Economics. Data were analyzed using hierarchical regression on five models. Each model used a different dependent variable to measure cognitive gain. The dependent variables were additive grade points, additive absolute improvement posttest scores, gap-closing posttest scores, microeconomic gap-closing scores and macroeconomic gap-closing posttest scores. The general hypothesis that students who complete microeconomics instruction followed by macroeconomics instruction have significantly higher cognitive gains than students who complete macroeconomics instruction followed by microeconomics instruction was not verified by the main effects. While the main effect of sequence was not significant, the interaction of sequence with previous high school economics was significant in the models using dependent variables of additive absolute improvement posttest score, gap-closing posttest score and microeconomic gap-closing posttest score. In addition, the interaction of sequence with previous college economics was significant on the dependent variable gap-closing posttest score. These findings seem to indicate that students who complete a sequence of macroeconomics followed by microeconomics with no previous exposure to economics have higher cognitive gains. In addition, students who complete a sequence of microeconomics followed by macroeconomics and ...
Date: August 1989
Creator: Trask, Jill A. (Jill Ann)
Partner: UNT Libraries

Independent Piano Teachers: An Investigation of Their Attitudes toward Selected Attributes of Profession

Description: The purpose of the study was to investigate independent piano teachers' view of themselves in the light of selected attributes found in sociological writings on the professions. The research problems were: (a) to determine the attitudes which independent piano teachers held toward selected professional attributes; (b) to determine the relationship between the attitudes toward the professional attributes and selected background variables; and (c) to determine the degree of association between these attributes. The problems were addressed by a questionnaire directed to independent piano teachers active in the area of Dallas-Ft. Worth, Texas. Thirty teachers were also interviewed to determine consistency of response and to explore issues which the questionnaire had raised. Reliability and validity were established at acceptable levels. Techniques of statistical analysis included Pearson's product-moment correlation, multiple regression, chi-square in conjunction with Cramer's V_, and factor analysis. The strongest attitudes expressed by the teachers in the study concerned professional self-image, altruism, client orientation, commitment to work, and independence. The most important background variables were age, years of experience, number of students, certification by a professional association, and college degree in music. A multiple regression analysis tested each variable against the dependent variable professional self-image; recognition by others, commitment to work, client orientation, and qualification were found to account for 25% of the common variance. A factor analysis was also conducted to seek out patterns of attitudes among the attributes being studied; seven factors were identified among the subjects' belief systems as Professional Actions, Satisfaction, Quality Control, Professionalism, Compliance, Autonomy, and Focus on Student. These factors accounted for almost half of the total variance in the data. The study concluded that: (a) independent piano teaching was a female-dominated, subsidized occupation, and (b) the piano teachers' professional self-image seemed to be an evaluation of themselves and their work, rather than the ...
Date: May 1989
Creator: Crane, Joyce L. (Joyce Lydia)
Partner: UNT Libraries

Field Dependence of Optical Properties in Quantum Well Heterostructures Within the Wentzel, Kramers, and Brillouin Approximation

Description: This dissertation is a theoretical treatment of the electric field dependence of optical properties such as Quantum Confined Stark (QCS) shifts, Photoluminescence Quenching (PLQ), and Excitonic Mixing in quantum well heterostructures. The reduced spatial dimensionality in heterostructures greatly enhances these optical properties, more than in three dimensional semiconductors. Charge presence in the quantum well from doping causes the potential to bend and deviate from the ideal square well potential. A potential bending that varies as the square of distance measured from the heterostructure interfaces is derived self-consistently. This potential is used to solve the time-independent Schrodinger equation for bound state energies and wave functions within the framework of the Wentzel, Kramers, and Brillouin (WKB) approximation. The theoretical results obtained from the WKB approximation are limited to wide gap semiconductors with large split off bands such as gallium arsenide-gallium aluminum arsenide and indium gallium arsenide—indium phosphide. Quantum wells with finite confinement heights give rise to an energy dependent WKB phase. External electric and magnetic fields are incorporated into the theory for two different geometries. For electric fields applied perpendicular to the heterostructure multilayers, QCS shifts and PLQ are found to be in excellent agreement with the WKB calculations. Orthogonality between electrons and holes gives rise to interband mixing in the presence of an external electric field. On the contrary, intraband mixing between light and heavy holes is not sufficiently accounted for in the WKB approximation.
Date: August 1989
Creator: Wallace, Andrew B.
Partner: UNT Libraries

An Investigation of the Laryngeal Activity of Trumpet Players During the Performance of Selected Exercises

Description: The study's purpose was to describe selected laryngeal activity of brass-wind players during the performance of selected musical exercises. Research problems included the observation and description of three internal areas of activity of ten trumpeters as they performed each exercise. Specific areas of observation were 1) movement of the epiglottis during the performance of each exercise, 2) movement of the vocal folds/arytenoid cartilage which includes changes in the size of the glottis during the performance of each prescribed exercise, and 3) movement of the thyroid cartilage during the performance of each prescribed exercise. Musical exercises performed by each of the subjects included a sound volume change, use of vibrato, single-tonguing, step-wise descending and ascending slurs, descending and ascending lip slurs, register change, and a descending chromatic scale. In addition, each subject performed an excerpt from the second movement of the Haydn Trumpet Concerto. Data were collected through direct observation of subject performances and then described using three different means. Data analyses revealed a prominent amount of highly individual, non-patterned laryngeal activity which played an integral role in the performance of each subject. Individuals including Law (1960), Cramer (1955), Jacobs (Stewart, 1987), and Noble (1964) have advocated an unrestricted airway during brass performance. Contrary to this advice, findings in the present study indicate that a great deal of varying, involuntary restriction is present in the laryngeal area during performance. Further, such activity appears necessary to brass performance. Others, including Farkas (1962), Schuller (1962), and Wick (1971) , have endorsed conscious use of the glottis during brass performance. While findings in the present study imply that there is a presence of voluntary or reflexive glottal activity during brass performance, evidence does not support any theory which suggests conscious use of the laryngeal mechanism.
Date: December 1989
Creator: Bailey, Robert E. (Robert Elwood), 1946-
Partner: UNT Libraries

The use of Selected Vocalises of Marco Bordogni in the Develpment of Musicianship for the Trombonist, a Lecture Recital, together with Three Recitals of Selected works by Eugene Bozza, Jacques Casterede, Pierre Max Dubois, Christian Gouinguene, Axel Jorgensen, Richard Monaco, Lars-Erik Larsson, Erhard Ragwitz, and Others

Description: This dissertation consists of three solo recitals and one lecture recital. The repertoire of all programs is composed of music written specifically for the trombone plus two transcriptions of works for voice. The purpose of this paper is to investigate the use of selected vocal pedagogical material as a means of developing musicianship for the trombonist. The historical relationship of the voice and the trombone is traced through written documentation and musical composition. Similarities between the development of legato technique for the vocal student and the trombonist are examined. A brief history of the vocalise and its pedagogical function is presented. The development of expressive musical performance for the trombonist is explored through the use of examples from three different vocalises of Marco Bordogni.
Date: August 1989
Creator: Mitchell, Randall T. (Randall Thomas)
Partner: UNT Libraries

Aspects of a Late Style in Sergei Rachmaninoff's Variations on a Theme of Corelli, Op. 42: a Lecture Recital, together with Three Recitals of Selected Works of J. Brahms, L. v. Beethoven, F. Chopin, C. Debussy, Zoltan Kodaly, M. Moussorgsky, and S. Prokofiev

Description: This document identifies elements of a stylistic change which occurred in several of the pieces Rachmaninoff wrote during the last years of his life. These elements reflect a progressive trend in his music, which certainly maintained in spite of the change, its characteristic sound. The Variations on a Theme of Corelli, Op. 42 illustrate these new developments in their lean, angular unison sonorities, stripped of chordal padding and virtuosic display, in their percussive, staccato and incisive ostinato rhythmic figures, astringent chromatic harmony and modern air of detachment. The Rhapsody on a Theme of Paganini, Op. 43 confirms this stylistic development in its remarkable similarity to the Corelli Variations. In the last twenty-six years of his life in exile from his homeland, making his way around the world as a concert pianist, Rachmaninoff wrote only six major works. Perhaps his increasing age, separation from homeland, and the musical revolutions surrounding him in the Western world produced this stylistic development.
Date: May 1989
Creator: Ruttle, Mark
Partner: UNT Libraries

Physiologic and Hematologic Responses Resulting From High-Intensity Training Among Elite Female Middle- and Long-Distance Runners

Description: The problem addressed in this study is whether physiologic, hematologic, and performance parameters obtained during and after a long term program of anaerobic and aerobic exercise can be used as markers of chronic fatigue.
Date: December 1989
Creator: Vaughan, Robert H. (Robert Harris)
Partner: UNT Libraries

The Effects of Voluntary Lateral Orienting on Positive Manifold for Lateralized Cognitive Tasks

Description: As an extension of previous studies (Urbanczyk, Angel, & Kennelly, 1988) examining the effects of unimanual finger tapping on lateralized cognitive tasks, lateral body orienting was added to an established dual task paradigm to generate differential hemispheric activation and shifts of attention. One hundred twenty university students retained sequences of digits or spatial locations for 20 seconds either alone or during finger tapping. By turning both head and eyes left or right, the hemisphere congruent with the sequences (LH for digits, RH for locations) or incongruent (vice versa) was activated. Activation had little effect on retention means but greatly affected resource composition supporting task performance. Congruent orientation produced significantly higher positive correlations between digit and location tasks than incongruent orientation. Females showed higher sequence retention correlations than males across both orienting groups. For females, congruent activation enhanced tapping rates and retention-tapping correlations. For males, activation affected neither of these. Discussed in light of neuroanatomical research, these results suggest that congruent attentional orienting may integrate regions of the less activated hemisphere into networks of the more activated hemisphere. This unification may occur more readily across the female corpus callosum, producing a greater dependence upon a general attentional resource than for males, who appear to depend more upon hemispheric resources.
Date: August 1989
Creator: Urbanczyk, Sally Ann
Partner: UNT Libraries

Validation of the Spanish Dallas Pain Questionnaire

Description: The purpose of this study was to validate the Spanish version of the Dallas Pain Questionnaire (DPQ). Not only does the DPQ offer the potential of statistical and clinical diagnostic value but also is easily interpretable across cultural lines. No such instrument has presently been validated for the Mexican-American population. A total of 81 Spanish speaking subjects participated in this study. Of these subjects, 56 were classified as chronic pain patients by nature of their medical diagnosis and duration of pain. The 25 normal subjects were family members of the chronic pain patients and members of the Northern New Mexico Hispanic community chosen at random. Hypothesis one predicted that reliability would be obtained on Spanish speaking populations based on test-retest with correlation coefficients of the items. The second hypothesis predicted that the Spanish DPQ would have content validity or consistent internal structure on those items that measure the trait or behavior of interest based upon factor analysis approaches and internal consistency measures. Hypothesis three predicted that the Spanish version of the DPQ would significantly correlate with the English version of the DPQ on all four factors. All four hypotheses were supported. The Spanish DPQ showed reliability over time based on test-retest. The statistics revealed an internally reliable test, alpha coefficient analysis and factor analysis. The validity was supported by significant correlations with the English DPQ and discrimination between chronic and nonchronic pain patients. While all four hypotheses were upheld, interpretation of the present findings should be moderated by recognition of the limitations of the studies. Future studies should test larger samples to improve confidence in the psychometric properties of the instrument. Still notable limitations of the questionnaire are that the Spanish DPQ is a form that is more accurately viewed as a global measure.
Date: May 1989
Creator: Keeping, Barbara
Partner: UNT Libraries

Assessment of the Relationship of the Peer Assistance and Leadership (PAL) Program on the Self-Concept of At-Risk Students as Measured by the Piers-Harris Children's Self-Concept Scale

Description: The problem of this study was to determine if there was a difference in the self-concept of two groups of ninth-grade students when one group received the services of junior and senior students in a Peer Assistance and Leadership class. The results of the Piers-Harris Children's—Self—Concept Scale were used to determine the difference between the mean self-concept scores of the two groups and also to determine if there was a relationship between the criterion variable of the total self-concept score and eight predictor variables as identified by House Bill 1010: Limited English proficiency, age, school attendance, achievement scores two or more years below grade level in reading and mathematics on a norm-referenced test, failure to master any portion of the Texas Educational Assessment of Minimum Skills, failure in two or more subjects, grade retention, and eligibility for free or reduced-price lunch. A total of 105 students, 50 in the experimental group and 55 in the control group, participated. The findings revealed that there was no significant difference in the mean self-concept scores of the two groups. The correlation revealed that there were significant differences between self-concept and the variables of mathematics achievement scores, failing grades, and eligibility for free lunch.
Date: August 1989
Creator: Karam, Patricia
Partner: UNT Libraries

Computer Literacy Levels and Attitudes toward Computers of Thai Public University Students

Description: The purpose of this study was to investigate and analyze computer literacy and general attitudes toward computers of students at Thai public unversities. The comparative study of computer literacy levels and attitudes toward computers among Thai students with various demographic classification was performed followed by the study of relationships between the two variables among the samples. A fifty-eight-item questionnaire was adapted from the computer literacy questionnaire developed by the researchers at the Minnesota Educational Computing Consortium. The items were designed to assess knowledge and attitudes relative to computers. The questionnaire was administered to a random sample of 492 students who took at least one computer course from thirteen public universities in Thailand. Statistical tests used to analyze the data included t-test, one-way analysis of variance, and Pearson product moment correlations. Based on the research findings, the following conclusions were drawn: (1) Thai university students exhibited a moderate computer literacy level. (2) While a higher proportion of female students enrolled in computer classes, male and female students reported similar computer literacy levels. (3) Graduate students had higher computer literacy levels than did other students from different educational levels. (4) Academic majors and academic performance (GPAs) were also factors affecting computer literacy levels. Education majors displayed higher computer literacy levels than mathematics majors and science majors. (5) Students with higher GPAs had higher levels of computer literacy than the groups with lower GPAs. (6) Computer literacy was not age dependent. (7) Generally, Thai university students showed positive attitudes toward computers. (8) Males and females both showed positive attitudes toward computers. (9) Graduate students exhibited more positive attitudes toward computers than all other groups. (10) The groups of students with lower GPAs displayed lower positive attitudes toward computers. (11) There was a strong positive relationship between students' knowledge and their attitudes toward computers. ...
Date: August 1989
Creator: Jaruwan Skulkhu
Partner: UNT Libraries

L-shell X-ray production cross sections of ₂₉Cu, ₃₂Ge, ₃₇Rb, ₃₈Sr, and ₃₉Y and M-shell X-ray production cross sections of ₇₉Au, ₈₂Pb, ₈₃Bi, ₉₀Th, and ₉₂U by 70-200 keV protons

Description: L-shell x-ray production cross sections have been measured for thin targets of 29Cu, 32Ge, 37Rb, 38Sr, and 39Y. M-shell x-ray production cross sections have been measured for thin targets of 79Au, 82Pb, 83Bi, 90Th, and 92U. All targets were irradiated with a beam of H+ ions with energies in a range from 70 to 200 keV. Experimental cross sections are compared to other measurements at higher energies and to first Born (Plane Wave Born Approximation for direct ionization and Oppenheimer-Brinkman-Kramers-Nikolaev approximation for electron capture) and the ECPSSR (Energy loss, Coulomb deflection, Perturbed Stationary State calculations with Relativistic effects) theoretical cross sections.
Date: August 1989
Creator: Gressett, David
Partner: UNT Libraries

Systematics of Coccidian Parasites (Apicomplexa) from Amphibians and Reptiles in Northcentral Texas

Description: Between February 1986 and October 1988, 863 amphibians and reptiles were collected in northcentral Texas and examined for coccidial parasites. Thirteen percent of amphibians <26% salamanders, 11% frogs and toads) and 28% of reptiles (54% turtles, 25% snakes) harbored 20 previously described and 16 new species of coccidia; overall prevalence of infection was 176/863 < 20%). Sixteen Ambvstoma texanum were infected with Eimeria ambystomae which represents new host and geographic locality records for the coccidium. Forty anurans were found to be passing coccidia, including Pseudacris streckeri. Bufo valliceos and Gastrophryne olivacea. Four new species of coccidia were described from anurans and include Eimeria flexuosa. E. streckeri. Isospora dellcatus and I_. fraaosum. However, oocysts found in B. v.. valliceps were determined experimentally to represent pseudoparasites. Sixty-eight turtles were infected with coccidia, including Chelvdra serpentina, Kinoeternon flavescens. Pseudemvs texana. Terrapeng ornata and Trachemvs scripta eleoans. Fourteen eimerians (5 of which are described as new species) were found in turtles. The new species from turtles include Eimeria cooteri, E. ornata, E. Btvlosa. E. texana and E. trachemvdis. Interestingly, all 96 lizards examined were negative for coccidia. Fifty-three snakes including 11 colubrids and 1 viperld harbored coccidia of the genera Caryospora. Cryptosporidium. Eimeria and Sarcocystis: prevalence of infection was highest in 3 species of North American water snakes <Nerodia spp.). Seven new species of Eimeria were described from snakes, including E. conanti. E. lnfirmus. E. papillosum. E. rhombifera. E. serpenticola. E. striatula and E. tenuis. There was no preference for coccidia between the sexes of any hosts. Based on limited data from a single anuran host, prevalence was higher during wetter months of spring than in summer. In addition, prevalence was higher in aquatic and semiaquatic snakes than in truly terrestrial species. Preliminary data suggested that using host specificity data of coccidia may be ...
Date: December 1989
Creator: McAllister, Chris Thomas
Partner: UNT Libraries

The Impact Of Peer, School, Family, and Religion Factors Upon Adolescent Drug Use

Description: The contribution of this research is in the area of adolescent decision making. The specific decision examined is the decision to use or not use drugs. Several factors were expected to have significant impacts on this crucial adolescent decision. These factors included peer, school, family, and religion influences. The source of the data was a sample of ninth through twelfth grade students in a north Texas city. The students responded to a survey questionnaire in the spring semester of 1989. A total of 632 students responded to the questions about alcohol- and drug-related attitudes, beliefs, and behaviors. Four major hypotheses were tested, and each one was supported by the research findings. In the first hypothesis, it was expected that family drug use factors would have a positive effect on adolescent drug use. Family factors included the following: parental use of alcohol, problems for family members due to parental drinking, and problems for the respondent due to parental drinking. Family factors had a statistically significant effect on alcohol use and any drug use.
Date: December 1989
Creator: Stanley, Gregory A. (Gregory Amos)
Partner: UNT Libraries

An Exploratory Investigation of Socio-Economic Phenomena that May Influence Accounting Differences in Three Diverse Countries

Description: This dissertation attempts to provide an exploratory structure to respond to, and tries to resolve, an existing void in international accounting research. The void is a lack of coherently structured, nation-specific, descriptive research to investigate socio-economic phenomena which may influence financial accounting. This dissertation's salient features include a political economy theory, an exploratory, sociological method, and a case study format. The political economy of accounting, introduced by Tinker [1980] and refined by Cooper and Sherer [1984], emphasizes a persuasive social relations dimension. This theory motivates selection of three countries (the United States, France, and Japan) that appear to have divergent socio-cultural environments. An exploratory and analytical approach of modified (enlarged) exogenism, developed by Smith [1973, 1976] and adapted to accounting by McKinnon [1986], provides an analytic structure for this exploratory investigation. Modified exogenism focuses upon an open, dynamic social system (the process of financial accounting), and provides analysis reflecting four major areas (the environment, intrusive events, intra-system activity, and trans-system activity). After examining the nation-specific financial accounting (socio-economic) structures for each country, an analysis of selected financial disclosures attempts to gain a better understanding of how socio-economic factors have influenced the development of financial accounting. My primary objective is to attempt to provide some insight about ,how diverse socio-political factors have impacted the development of financial accounting in three countries. Library research of nation-specific literature attempts to extract a relatively accurate picture of social, political, and economic institutions and policies, and relates such findings to financial accounting processes for each nation. This dissertation attempts to provide a necessary foundation for future theoretical international accounting harmonization studies.
Date: August 1989
Creator: Hudack, Lawrence R. (Lawrence Ralph)
Partner: UNT Libraries

Factors Influencing Student Achievement in Texas

Description: This study examines the relationships among student socioeconomic status, school district enrollment, minority enrollment, district expenditure per pupil, and the teaching experience of faculty as these variables influence the achievement scores of secondary students in Texas. Data from a total of 1,061 Texas school districts were used to determine the effects of the indicated district-level predictor variables on three criterion variables: reading, mathematics, and writing scores for the 11th-grade Texas Education Assessment of Minimum Skills (TEAMS). The study led to the following conclusions: 1. Low socioeconomic status of students in Texas, as in the rest of the United States, insures that test scores will be lower if all other variables are held constant. 2. Large minority populations are strong predictors of low test scores, especially in mathematics and reading. 3. Students in districts whose faculty had a high average of years of teaching experience also scored high in achievement tests, especially in mathematics and writing. 4. High average district expenditure per pupil predicts high test scores, especially in reading. 5. School district size or enrollment has low predictive value of test scores. Among several specific recommendations, this study advises that further study be done concerning the most effective ways to educate minority and socioeconomically disadvantaged student populations. The study also recommends that better ways be found to retain experienced teachers in the classroom, including monetary compensation, extra allowances for staff development, and additional resources. The study cautions against simply adding money to a district's budget to increase student achievement scores, asserting that districts should make thorough studies before higher expenditures per pupil are alone used to increase test scores.
Date: May 1989
Creator: Pickering, Sarah Kelley
Partner: UNT Libraries

A Historical Study of the Impact of the Christian Development on the Contributions of Frank C. Laubach in Literacy Education

Description: Frank C. Laubach made substantial contributions both to literacy education and the Christian life. There were between sixty and one hundred million people who learned to read through his literacy campaigns. He traveled to 130 countries developing literacy primers in 312 languages. At the same time, Laubach was a missionary mystic, spiritual experimenter and leader among Protestant Christians. The purpose of this study was to examine the relationship between two important parts of Laubach's life: his Christian development and literacy education. The study presents an overview of the family and social background of Frank C. Laubach from a chronological framework. Additional chapters examine: the importance of i-he Christian disciplines in Laubach's life, the impact of the missionary call and Laubach's concern for Christian social responsibility. The final chapter summarizes and evaluates the research. Both the Laubach collection, found in the George Arents Research Library at Syracuse University in Syracuse, New York, and the library at Laubach Literacy International in Syracuse, provided the resources for comprehensive research in the life of Frank C. Laubach.
Date: December 1989
Creator: Lawson, J. Gregory (James Gregory)
Partner: UNT Libraries