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Academic Achievement of National Social Fraternity Pledges Compared to Non-Fraternity Students (open access)

Academic Achievement of National Social Fraternity Pledges Compared to Non-Fraternity Students

This study examined the academic achievement of national social fraternity pledges compared to non-fraternity students at the University of Texas at Arlington. It was done to determine whether significant differences existed between the grade point averages of pledges of social fraternities and those of students who did not pledge a social fraternity, and to determine whether significant differences existed among fraternities when compared with each other with respect to academic achievement. This study was meant to provide a research design that could be used by other colleges and universities with fraternities to conduct the same comparison of academic performance. In the fall semester of 1989, 164 pledges were selected as the population for the study to be matched with non-fraternity students based on Scholastic Aptitude Test (SAT) scores, age, sex, classification, academic major, and number of hours attempted. A T-test of like groups was performed on the entire population with no significant difference found at the .05 level between all the fraternity pledges and all the matched pairs. A T-test of like groups was performed on the pledges from each separate organization and there was a significant difference among three of the fraternities. Two of the fraternities had significantly higher …
Date: August 1990
Creator: Gardner, Kent Lee
Object Type: Thesis or Dissertation
System: The UNT Digital Library
Academic, Behavioral, and Social Competency Characteristics of Non-Handicapped, Learning Disabled, and Emotionally/Behaviorally Disordered Adjudicated Juveniles (open access)

Academic, Behavioral, and Social Competency Characteristics of Non-Handicapped, Learning Disabled, and Emotionally/Behaviorally Disordered Adjudicated Juveniles

The juvenile justice system is society's response to juvenile misconduct. In spite of numerous federal, state, and local programs, the problem of juvenile delinquency persists. An increasing number of juveniles are being taken into custody and placed in institutional settings. Although juvenile delinquents share a number of common general characteristics (e.g., sex, minority, lower socioeconomic status, a history of school failure), they are not a homogeneous group. Effective educational interventions with delinquent juveniles can meet their unique academic, vocational, and social skills deficits. Handicapped juveniles are disproportionately represented among juvenile correctional facility populations. The identification of handicapped juveniles among delinquent populations is compounded as they share many of the same general characteristics. Federal statutes require individualized educational programs for all handicapped juveniles. This research investigated academic, behavioral, and social competencies of non-handicapped and handicapped adjudicated youth. Specifically, this investigation assessed measures of academic performance, classroom behavior, self-esteem, and social behavior. ANOVA indicated statistically significant differences between non-handicapped, learning disabled, and emotionally/behaviorally disordered adjudicated juveniles in reading achievement, mathematics achievement, and teacher generated measures of classroom behavior.
Date: August 1990
Creator: Campbell, Robert E. (Robert Eugene)
Object Type: Thesis or Dissertation
System: The UNT Digital Library
Academic Lineage and Student Performance in Medical School (open access)

Academic Lineage and Student Performance in Medical School

This research investigated the association between academic lineage and student performance in medical school. The purposes of the study were to: (1) determine whether the Carnegie classifications of medical school applicants' institutions of origin are associated with academic performance in medical school; (2) consider the relationship between the admission selectivity of the schools of origin and the academic performance of medical school students; (3) compare the performance of medical students from institutions under public governing control with students from privately controlled institutions; and (4) establish a model by which the relative academic strengths of applicants from a variety of undergraduate institutions can be understood more clearly based on the previous performance of medical students from schools with similar institutional characteristics. A review of the literature on medical school admissions was completed and used to develop this research. Medical students from the University of Texas Southwestern Medical Center at Dallas who enrolled between the years 1990 and 1994 and graduated or were dismissed between the years 1994 and 1998 were selected as the sample for the study (n=933). The undergraduate institution of origin for each student was coded based on its Carnegie classification, admissions selectivity group, and whether its governing control …
Date: August 1999
Creator: Wright, James Scott
Object Type: Thesis or Dissertation
System: The UNT Digital Library
Accelerator Mass Spectrometry Studies of Highly Charged Molecular Ions (open access)

Accelerator Mass Spectrometry Studies of Highly Charged Molecular Ions

The existence of singly, doubly, and triply charged diatomic molecular ions was observed by using an Accelerator Mass Spectrometry (AMS) technique. The mean lifetimes of 3 MeV boron diatomic molecular ions were measured. No isotopic effects on the mean lifetimes of boron diatomic molecules were observed for charge state 3+. Also, the mean lifetime of SiF^3+ was measured.
Date: December 1994
Creator: Kim, Yong-Dal
Object Type: Thesis or Dissertation
System: The UNT Digital Library
Accounting Measurement Bias and Executive Compensation Systems (open access)

Accounting Measurement Bias and Executive Compensation Systems

This dissertation presents empirical evidence intended to help answer two research questions. The first question asks whether executive compensation systems appear to exploit the bias in accounting-based performance measures in order to reduce the volatility in executive compensation and to allocate incentives more effectively across the range of activities performed by the executive. The second question asks whether compensation systems systematically differ between firms that use alternative accounting methods and whether any such systematic difference helps explain accounting choice. Parameters estimated in fixed-effects endogenous switching regression models were used to test the risk-shielding and incentive-allocation hypotheses. The models were estimated across a dataset consisting of 1151 executive-year observations of annual compensation paid to 222 top-level executives in 40 oil and gas firms. The dataset was partitioned by accounting method and separate models estimated for the full cost and successful efforts partitions. The tests provided modest support for the risk-shielding and incentive-allocation hypotheses, revealing that accounting measurement bias is used to focus incentives for effort in the exploration activity and to reduce executives' exposure to production risk. The design also allowed an estimate of the proportional change in compensation that was realized from the accounting choice actually made.
Date: December 1994
Creator: Boone, Jeffery Paul
Object Type: Thesis or Dissertation
System: The UNT Digital Library
Accounting Regulation and Information Asymmetry in the Capital Markets: An Empirical Study of Accounting Standard SFAS no 87 (open access)

Accounting Regulation and Information Asymmetry in the Capital Markets: An Empirical Study of Accounting Standard SFAS no 87

This study uses both basic and self-selection regression models to test three hypotheses about the effect of SFAS 87 disclosures on information asymmetry during 1985- 1987. Both types of models test the hypotheses after controlling for changes in the inventory holding and order processing costs of the spread, while the self-selection models also control for potential self-selection bias.
Date: August 1994
Creator: Lin, Wen-shan
Object Type: Thesis or Dissertation
System: The UNT Digital Library
Acculturation in African American College Women and Correlates of Eating Disorders (open access)

Acculturation in African American College Women and Correlates of Eating Disorders

Although eating disorders have been the focus of much research, the inclusion of minority populations has been minimal. A recent review of the literature by Dolan (1991) has found that eating disorders were most likely to be present in non-White women who were exposed to Western societies and cultures. Thus, the purpose of this study was to examine personality, physical, and cultural correlates of bulimic symptomatology in a sample of African American college women. The Bulimia Test Revised (BULIT-R) was used to assess bulimia symptoms. The African American Acculturation Scale (AAAS), the Beliefs about Attractiveness Scale Revised (BAAR factors 1 and 2), the Rosenberg Self-Esteem Scale (SES), the Centers for Epidemiological Depression Scale (CES-D), Body Parts Satisfaction Scale (BPSS), and body mass were the independent variables hypothesized to predict bulimic symptoms. Hierarchical regression analysis revealed that body mass, depression, and low self-esteem were the best predictors of bulimic symptomatology, together accounting for 38% of the variance. Beliefs about attractiveness and body satisfaction were related to bulimic symptoms but not when considered simultaneously with the other variables. Acculturation was not predictive of bulimic symptoms. 0-ordered correlations revealed that beliefs about attractiveness and body satisfaction were correlated with bulimic symptoms. Acculturation was …
Date: August 1996
Creator: Lester, Regan
Object Type: Thesis or Dissertation
System: The UNT Digital Library
O-Acetylserine Sulhydralase-A from Salmonella typhimurium LT-2: Thermodynamic Properties and SPectral Identification of Intermediates (open access)

O-Acetylserine Sulhydralase-A from Salmonella typhimurium LT-2: Thermodynamic Properties and SPectral Identification of Intermediates

O-Acetylserine Sulfhydrylase (OASS) is a pyridoxal phosphate enzyme that catalyzes the reaction of O-acetyl-Lserine with sulfide to give L-cysteine. OASS is present as two isoforms, designated -A and -B. The kinetic mechanism of OASS-A is well known and there is also much known concerning the acid-base chemistry of the enzyme. However, little is known concerning the location of the rate determining steps, the sequencing of chemical steps that occur at the active site, or the nature of the rate determining transition states. The studies performed to help elucidate these aspects of the OASS-A mechanism included determination of the thermodynamics of both half reactions, along with studies utilizing substrate analogs of OAS halting the reaction at specific points along the reaction pathway allowing the identification of reaction intermediates. The free energy change of the first half reaction was shown to be -5.7 Kcal/mole while the second half reaction was shown to be, for all intents and purposes, irreversible. Intermediates along the reaction pathway that have been previously identified include the internal Schiff base and the a-aminoacrylate. The external Schiff base was identified using the analogs cysteine, alanine, and glycine while the geminal diamine was identified using the analog serine. Formation of …
Date: August 1993
Creator: Simmons, James Walter
Object Type: Thesis or Dissertation
System: The UNT Digital Library
An Adaptive Linearization Method for a Constraint Satisfaction Problem in Semiconductor Device Design Optimization (open access)

An Adaptive Linearization Method for a Constraint Satisfaction Problem in Semiconductor Device Design Optimization

The device optimization is a very important element in semiconductor technology advancement. Its objective is to find a design point for a semiconductor device so that the optimized design goal meets all specified constraints. As in other engineering fields, a nonlinear optimizer is often used for design optimization. One major drawback of using a nonlinear optimizer is that it can only partially explore the design space and return a local optimal solution. This dissertation provides an adaptive optimization design methodology to allow the designer to explore the design space and obtain a globally optimal solution. One key element of our method is to quickly compute the set of all feasible solutions, also called the acceptability region. We described a polytope-based representation for the acceptability region and an adaptive linearization technique for device performance model approximation. These efficiency enhancements have enabled significant speed-up in estimating acceptability regions and allow acceptability regions to be estimated for a larger class of device design tasks. Our linearization technique also provides an efficient mechanism to guarantee the global accuracy of the computed acceptability region. To visualize the acceptability region, we study the orthogonal projection of high-dimensional convex polytopes and propose an output sensitive algorithm for …
Date: May 1999
Creator: Chang, Chih-Hui, 1967-
Object Type: Thesis or Dissertation
System: The UNT Digital Library
Addition, Omission and Revision: the Stylistic Changes Made to Zehn Variationen über ein Präludium von Chopin by Ferruccio Busoni (open access)

Addition, Omission and Revision: the Stylistic Changes Made to Zehn Variationen über ein Präludium von Chopin by Ferruccio Busoni

This study examines what Busoni meant by "formal deficiencies" when he described his 1884 version of Chopin Variations, and reveals that changes made to the 1884 version during its process of revision in 1922 correct the "formal deficiencies" and show a fundamental change in Busoni's compositional style and perception of musical motion. Including a detailed analysis of the modifications, omissions, and additions made to the 1922 version (including an examination of the Chopin Prelude in C minor, op. 28, No. 20 as a theme to reveal aspects of its construction used in the variation process), which shows how these changes affect the work's compositional structure.
Date: December 1994
Creator: Yoon, Soomee
Object Type: Thesis or Dissertation
System: The UNT Digital Library
Additional evidence on informational asymmetry at acquisition announcement (open access)

Additional evidence on informational asymmetry at acquisition announcement

This dissertation examines the partial anticipation hypothesis by employing the bid-ask spread approach in market microstructure theory. Selecting the OTC bidding firms with a careful research design, this dissertation divides sample firms into firms with acquisition programs and firms without acquisition programs.
Date: August 1991
Creator: Kim, Young Kook
Object Type: Thesis or Dissertation
System: The UNT Digital Library
Adenosine and Down-Regulation of Myocardial Oxygen Demand (open access)

Adenosine and Down-Regulation of Myocardial Oxygen Demand

This investigation studied the physiological means by which myocardium can survive and function properly when oxygen supply is limited and cannot initially match oxygen demand. The effects of isoproterenol (ISO) stimulations during low coronary perfusion pressure or hypoxemia on myocardial oxygen demand, work, and oxygen utilization efficiency were investigated.
Date: December 1991
Creator: Lee, Shang Chiun
Object Type: Thesis or Dissertation
System: The UNT Digital Library
Adhesion/Diffusion Barrier Layers for Copper Integration: Carbon-Silicon Polymer Films and Tantalum Substrates (open access)

Adhesion/Diffusion Barrier Layers for Copper Integration: Carbon-Silicon Polymer Films and Tantalum Substrates

The Semiconductor Industry Association (SIA) has identified the integration of copper (Cu) with low-dielectric-constant (low-k) materials as a critical goal for future interconnect architectures. A fundamental understanding of the chemical interaction of Cu with various substrates, including diffusion barriers and adhesion promoters, is essential to achieve this goal. The objective of this research is to develop novel organic polymers as Cu/low-k interfacial layers and to investigate popular barrier candidates, such as clean and modified tantalum (Ta) substrates. Carbon-silicon (C-Si) polymeric films have been formed by electron beam bombardment or ultraviolet (UV) radiation of molecularly adsorbed vinyl silane precursors on metal substrates under ultra-high vacuum (UHV) conditions. Temperature programmed desorption (TPD) studies show that polymerization is via the vinyl groups, while Auger electron spectroscopy (AES) results show that the polymerized films have compositions similar to the precursors. Films derived from vinyltrimethyl silane (VTMS) are adherent and stable on Ta substrates until 1100 K. Diffusion of deposited Cu overlayers is not observed below 800 K, with dewetting occurred only above 400 K. Hexafluorobenzene moieties can also be incorporated into the growing film with good thermal stability. Studies on the Ta substrates demonstrate that even sub-monolayer coverages of oxygen or carbide on polycrystalline …
Date: December 1999
Creator: Chen, Li
Object Type: Thesis or Dissertation
System: The UNT Digital Library
Adjustment of Kindergarten Children through Play Sessions Facilitated by Fifth Grade Students Trained in Child-Centered Play Therapy Procedures and Skills (open access)

Adjustment of Kindergarten Children through Play Sessions Facilitated by Fifth Grade Students Trained in Child-Centered Play Therapy Procedures and Skills

This research study investigated the effectiveness of the application of child-centered play therapy procedures and skills by trained fifth grade students in play sessions with kindergarten children who had adjustment difficulties. Specifically, this research determined if play sessions with trained fifth grade students facilitated change in kindergarten children's self concept, internalizing behavior, and externalizing behavior and their parents' stress level.
Date: May 1999
Creator: Baggerly, Jennifer N. (Jennifer Nalini)
Object Type: Thesis or Dissertation
System: The UNT Digital Library
Adlerian Counseling and the Early Recollections of Children (open access)

Adlerian Counseling and the Early Recollections of Children

This investigation used a descriptive approach to explore and evaluate early recollection changes of children in Adlerian counseling. The study addressed seven research questions regarding early recollection change for children in Adlerian counseling as compared with children not in Adlerian counseling. The treatment group was engaged in Adlerian counseling for 10 weeks. The investigator conducted pre-counseling and post-counseling interviews to collect six total early recollections from 9 subjects. The comparison group was not engaged in treatment for counseling. The investigator conducted interviews at an interval of 10 weeks to collect six total early recollections from 9 subjects. The Manaster-Perryraan Manifest Content Early Recollection Scoring Manual was used for analysis of early recollection content. Following training sesions, raters scored absence or presence of content variables in early recollections. Tables were employed to reveal findings of early recollection content change as addressed by the seven research questions of this study. A descriptive evaluation of' the data indicated that the treatment group manifested greater change in early recollection content as compared to the comparison group in six of seven research questions. On the basis of these findings, this study concluded that early recollections of children are a valid source of potential in measuring …
Date: May 1990
Creator: Statton, Jane Ellis Porter
Object Type: Thesis or Dissertation
System: The UNT Digital Library
Adlerian Life Style and the Myers-Briggs Type Indicator (open access)

Adlerian Life Style and the Myers-Briggs Type Indicator

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 …
Date: May 1993
Creator: Doss, Carol Rose
Object Type: Thesis or Dissertation
System: The UNT Digital Library
Adlerian Life-Style, Social Interest, and Job Satisfaction Among Catholic Priests (open access)

Adlerian Life-Style, Social Interest, and Job Satisfaction Among Catholic Priests

The purpose of this study was to seek an understanding of the problem of low morale among Catholic priests based on the principles of Individual Psychology. The relationship of Adlerian life-style and social interest to job satisfaction among 210 pastors randomly selected from 13 of the 14 Catholic dioceses in Texas was investigated. The Life-style Personality Inventory (LSPI) was used to measure the Adlerian life-style. The Social Interest Scale (SIS) was used to measure the Adlerian concept of social interest. The Job Descriptive Index (JDI) was used to measure job satisfaction.
Date: May 1991
Creator: Ugwokaegbe, Paul U. (Paul Ugochukwu)
Object Type: Thesis or Dissertation
System: The UNT Digital Library
Adlerian Personality Priorities of Siblings of Individuals with Tourette Syndrome (open access)

Adlerian Personality Priorities of Siblings of Individuals with Tourette Syndrome

This study was designed to examine Adlerian personality priorities of siblings of individuals with Tourette Syndrome (TS). This study aimed to investigate whether a difference exists between TS siblings and siblings of those without disabilities on variables related to personality priorities. It was hypothesized that TS siblings would score significantly higher than the control group on the superiority and pleasing personality priorities and significantly lower on the comfort and control personality priorities. Both of the hypotheses were rejected. First, no significant difference was found between TS siblings and the control group on the superiority and pleasing personality priorities. Second, no significant difference was found between TS siblings and the control group on the comfort personality priority, and TS siblings scored significantly higher than the control group on the control personality priority.
Date: August 1998
Creator: Sims, Deanna
Object Type: Thesis or Dissertation
System: The UNT Digital Library
The Administration of Auxiliary Services in Texas Public Universities: Analysis and Proposed Integrated Model (open access)

The Administration of Auxiliary Services in Texas Public Universities: Analysis and Proposed Integrated Model

The problem of this study was to develop a model for the administration of auxiliary enterprises in Texas higher education as a cooperative effort of administrators and input from other sources. The purposes were to determine which administrators currently have the responsibility for the management of auxiliary services, to evaluate the correlation between the type of administrator and the concern for fiscal and student needs, to identify problems and opportunities for useful administration, and to develop a model integrating the strengths of each administrator and the implementation of new ideas to improve auxiliary enterprise management. A survey instrument consisting of three types of questions was mailed to both Vice Presidents of Fiscal Affairs and Student Affairs at all 26 four-year public institutions in Texas. Part I questions were informational, designed to determine who administers auxiliary services. Part II consisted of 20 questions on a Likert scale to obtain both opinions on the theories of the research, and specialized knowledge of the administrators. Part III was free response to solicit ideas from the administrators for the construction of the model. Paired t-tests were performed to determine knowledge strengths of the administrators. All other information was presented in frequency tables or narrative …
Date: May 1994
Creator: Yarbrough, Marianne (Marianne June)
Object Type: Thesis or Dissertation
System: The UNT Digital Library
Admissions Committee Ratings as Predictors of Persistence in Master's-level Theological Education (open access)

Admissions Committee Ratings as Predictors of Persistence in Master's-level Theological Education

This research attempted to ascertain whether the ratings of applicants in the admissions-evaluation process of Dallas Theological Seminary (Admission Committee Rating, or ACR) were related to persistence in seminary study sufficiently to allow reasonable prediction of completion based on the strength of the ratings. Five ACRs were examined - the total ACR and its four components, strength of previous academics, personal references, potential and promise for ministry, and previous ministry experience. Other non-admissions factors were also examined to see what relationship they had to persistence. Those factors were years of matriculation, age at matriculation, gender, marital status, ethnicity, nationality, types of previous higher education, whether or not financial aid was received (if known), and the total amount of financial aid received (if known). Persistence in the study was defined as graduation from the seminary's major four-year master's degree program (Th.M.) within the time limits published for the degree. Analysis results indicated that only two of the five ACRs were statistically significant, ministry potential and ministry experience, but the relationship with completion was weak. The conclusion reached was that the relationship between the strength of the admission evaluation and persistence was practically insignificant and contributed little to the ability to predict …
Date: December 1997
Creator: Thames, James H.
Object Type: Thesis or Dissertation
System: The UNT Digital Library
Adolescent Discouragement: Development of an Assessment Instrument (open access)

Adolescent Discouragement: Development of an Assessment Instrument

The Adolescent Discouragement Indicator (ADI) was developed to assess the Adlerian construct of discouragement. The 75-item ADI contains five subscales corresponding to the five life tasks specified in Individual Psychology and is specifically designed to pinpoint the area and degree of adolescent discouragement. Item selection was based on ratings by five prominent Adlerians and item correlation with subscale scores. Age and sex norms for the ADI were established on 225 females and 299 males 12 to 18 years of age. Findings indicate that female adolescents are less discouraged than male adolescents on all scales except the love scale and both sexes reported the least amount of discouragment on the love scale. The only significant difference among the age groups is between the 13-year-olds and the 15, 16, and 17-year-olds on the love scale. An internal consistency coefficient of .95, a 2-week test-retest coefficient of .89, and a 4-week test-retest coefficient of .92 indicates that the ADI is a reliable instrument. Negative and significant (p < .001) correlations between the ADI and Social Interest Index (Greever, Tseng, & Friedland, 1973) and between the ADI and the Social Interest Scale (Crandall, 1975) contribute to construct validity and support Adler's belief that discouragement …
Date: May 1990
Creator: Lingg, MaryAnn
Object Type: Thesis or Dissertation
System: The UNT Digital Library
Adsorbate-enhanced Corrosion Processes at Iron and Iron Oxide Surfaces (open access)

Adsorbate-enhanced Corrosion Processes at Iron and Iron Oxide Surfaces

This study was intended to provide a fuller understanding of the surface chemical processes which result in the corrosion of ferrous materials.
Date: December 1994
Creator: Murray, Eric
Object Type: Thesis or Dissertation
System: The UNT Digital Library
Adult Age and Ethnicity as Factors in Success on the TASP : A Measurement of the Texas Academic Skills Program (TASP) Test (open access)

Adult Age and Ethnicity as Factors in Success on the TASP : A Measurement of the Texas Academic Skills Program (TASP) Test

This study examined the association among ethnicity, age, and scores on selected portions of the TASP and MAPS tests. This study further examined if the TASP could identify students for success in college level course work as well or better than selected portion of the MAPS test.
Date: August 1991
Creator: Friedman, Linda A. (Linda Anne)
Object Type: Thesis or Dissertation
System: The UNT Digital Library
Adult Attention Deficit Hyperactivity Disorder Personality Characteristics and Comorbidity (open access)

Adult Attention Deficit Hyperactivity Disorder Personality Characteristics and Comorbidity

Attention-deficit/hyperactivity disorder (ADHD) is surrounded by confusion and controversy regarding its definition, course, etiology and treatment. Among adults, ADHD is rarely considered a diagnostic reality of primary importance and is often overlooked. This study provides descriptive validity for adult ADHD in distinguishing it from controls, and identifying both a pure condition and one wrought with comorbidity.
Date: August 1998
Creator: Austin, Karla Michele
Object Type: Thesis or Dissertation
System: The UNT Digital Library