UNT Theses and Dissertations - 269 Matching Results

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From Theory to Practice: A First Look at Success for Life - A Brain Research-Based Early Childhood Program

Description: Success For Life (SFL) is a brain research-based program for children, birth through age six. This research examined the development and implementation of SFL in 13 early childhood settings. Participants were 24 female early childhood teachers and 146 (73 male) children. Teachers included seven infant, four toddler, nine preschool and four kindergarten teachers. Children included infants(n=29), toddlers(n=27), and prek/kindergartners (n=90). A Request for Proposals was disseminated to identify possible implementation sites. After participation was confirmed, teachers attended a full day's training which included a description of brain development/function, the latest brain research, how to implement SFL and other logistics of the study. Program implementation occurred over approximately four months. A field site coordinator visited each site bimonthly to provide on-going technical assistance. This was an intervention project with a pre and post implementation design. Four instruments were used: a teacher questionnaire, a classroom environment measure, a child measure and teacher journals. Results suggested that teachers became more knowledgeable about brain development research and about how children grow and learn. Teachers were better able to make connections between brain research findings and how to apply these findings to their programs and daily activities. Likewise, the environment measure indicated that teachers were better able to arrange environments for learning. They reported that children showed significant increases in skills development and performance in the following areas: physical mastery, social relations/interactions, cognitive development, and language/communications. Additionally, teachers reported improvements in emotional expression and well-being among infants and toddlers. Toddlers and preschoolers showed significant increases in creative/ artistic expression. Finally, teachers indicated that preschoolers showed increases in initiative, use of logic/mathematics skills, and musical coordination and movement. Research findings suggest that Success For Life is able to bridge the gap between theory and practice and benefits children, teachers and programs.
Date: December 1998
Creator: Castro, R. Raquel
Partner: UNT Libraries

Investigating the Delivery of Therapeutic Recreation Services on the Internet: a Pilot Study Using Leisure Education for the Prevention of Alcohol Abuse

Description: This pilot study, grounded in social learning theory, demonstrated that leisure education services can be delivered on the Internet. Participants (n=40) successfully accessed the Web page program and responded to instruments and surveys. The treatment group (n=16) effectively completed four leisure education sessions on-line. Confidentiality, privacy, and anonymity issues were controlled. Responses were monitored and feedback provided as to the complexity of the program and comprehension of the participants. The leisure education program had no significant effect on posttest measures of alcohol expectancies and leisure motivations. Mean changes frompretest to posttest may indicate trends. The small n and convenience sample may have introduced many extraneous variables. Professional implications include compliance issues (57% experimental mortality rate), technology-related anxiety, and limited professional competency to work in this environment. Future research which examines the provision of leisure education and other components of therapeutic recreation service on-line is warranted.
Date: December 1998
Creator: Mainville, Sylvie
Partner: UNT Libraries

An Examination of the Criterion-Related Validity of a Developmental Assessment Center

Description: The purpose of this study was to investigate the criterion-related validity of an assessment center's competency dimension ratings, exercise ratings, and standardized test scores. Numerous studies have clearly demonstrated assessment centers display substantial evidence of content and criterion-related validity. However, the inability of assessment centers to display construct-related validity has caused a great deal of concern among researchers. The suggestions of these researchers are addressed through a more detailed examination of the criterion-related validity of an assessment center. Despite a number of methodological issues, two competency dimensions and two components stand out as viable predictors of the criteria used in this study. Examination of individual and incremental validity coefficients reveals the Strategic Focus and Attracting and Developing Talent competency dimensions, the In-Basket exercise, and the Watson-Glaser scaled score consistently predict the criteria used in this study. The implications of these results for future research are discussed.
Date: August 1998
Creator: Yurkon, Andrew C.
Partner: UNT Libraries

Technology Infusion in Career Services at U.S. Institutions of Higher Education in the Southwest

Description: The purpose of this study was to examine the use of computer and communications technologies at four-year public/private college and university career centers that are members of the Southwest Association of Colleges and Employers (SWACE). The findings of this study reveal that (a) all career centers are now using computer and telecommunications technologies for at least one office function; (b) small institutions do not use technologies as much as large institutions because they have fewer financial resources, less technical support from institutions, fewer personnel, and they also need time to learn to use technologies effectively; (c) public career centers are more willing to explore new technologies but private career centers mostly adopt and implement proven technologies; (d) career education does not utilize technologies as much as career counseling or job placement functions; (e) lack of financial resources and lack of technical support are major barriers to a technological infusion; and (f) technologies, including electronic student databases, computerized presentations with the network connection, and OCR scanners, will be needed in the near future.
Date: May 1998
Creator: Charoensri, Pijarn
Partner: UNT Libraries

Juan Bautista Maino's Adoration of the Shepherds: An Analysis of Iconography, Iconology, and Style

Description: This thesis investigates the iconography, iconology, and style of Juan Bautista Maino s Adoration of the Shepherds (1615-1620) located at the Meadows Museum, Dallas, Texas. The study begins with an overview of general information on Maino and his works. Chapter 2 explores the evolution of the Adoration of the Shepherds depiction in art, while examining social and political factors which may have influenced Maino's iconographical choices. Chapter 3 is a comparative analysis of the Meadows Adoration of the Shepherds to two other Adoration of the Shepherds by Maino, revealing a stylistic progression and presenting an argument for the dates the Meadows painting was rendered. Chapter 4 reviews the findings and suggests further study on this and other paintings by Maino.
Date: August 1998
Creator: Berry, Christine A. (Christine Alyce)
Partner: UNT Libraries

Plane Curves, Convex Curves, and Their Deformation Via the Heat Equation

Description: We study the effects of a deformation via the heat equation on closed, plane curves. We begin with an overview of the theory of curves in R3. In particular, we develop the Frenet-Serret equations for any curve parametrized by arc length. This chapter is followed by an examination of curves in R2, and the resultant adjustment of the Frenet-Serret equations. We then prove the rotation index for closed, plane curves is an integer and for simple, closed, plane curves is ±1. We show that a curve is convex if and only if the curvature does not change sign, and we prove the Isoperimetric Inequality, which gives a bound on the area of a closed curve with fixed length. Finally, we study the deformation of plane curves developed by M. Gage and R. S. Hamilton. We observe that convex curves under deformation remain convex, and simple curves remain simple.
Date: August 1998
Creator: Debrecht, Johanna M.
Partner: UNT Libraries

Characterization of Aspartate Transcarbamoylase and Dihydroorotase in Moraxella Catarrhalis

Description: Bacterial aspartate transcarbamoylases (ATCase's) are divided into three classes that correspond to taxonomic relationships within the bacteria. The opportunistic pathogen Moraxeila catarrhalis has undergone several reclassifications based on traditional microbiological criteria. The previously uncharacterized ATCase from M. catarrhalis was purified to homogeneity and its chemical properties characterized. The ATCase from M. catarrhalis is a class C ATCase with an apparent molecular mass of 480-520 kDa. The M. catarrhalis ATCase is a dodecomer composed of six 35 kDa polypeptides and six 45 kDa polypeptides. The enzyme has an unusually high pH optimum of greater than pH 10. The enzyme exhibited hyperbolic kinetic with a Km for aspartate of 2 mM. A single, separate 78 kDa dihydroorotase from M. catarrhalis was identified and it was not associated with ATCase. These data support the reclassification of M. catarrhalis out of the Neisseriaceae family.
Date: May 1998
Creator: Fowler, Michael A. (Michael Allen), 1961-
Partner: UNT Libraries

A History of Contemporary Independent Film Marketing in the United States (1989-1998)

Description: This study explores the reasons for the rise in independent film's popularity, which have created a unique Hollywood phenomenon, the successful "mini-major" independent studio, dedicated to both art and commerce. Chapters cover the history of independent film, characteristics of both independent and mainstreamfilms with regards to financing, acquisition, distribution and marketing, trends within independent film in the late 1980s and 1990s, crucial distributors and landmark independent films, and key growth areas in the future for independent film.
Date: August 1998
Creator: Ahearn, John P. (John Patrick)
Partner: UNT Libraries

Re-examining the Battle of the Bulge : Assessing the Role of Strategic Intelligence and Coalition Warfare Against the 1944 Wehrmacht

Description: The 1944 German Ardennes offensive failed. It was overly ambitious, built on erroneous assumptions, insufficiently supported by logistics, and depended on the weather for success. Yet, the offensive achieved more than it should have given the strength and combat experience of the Allied armies in Europe. Previous attempts to explain the limited success of the German offensive have emphasized the failure of Allied strategic intelligence - Ultra. Intelligence is an accurate, but incomplete explanation for initial German success in the Ardennes. Three conditions allowed the Wehrmacht, approaching its manpower and logistical end, to crush the US First Army. First, coalition warfare so weakened the First Army that it became vulnerable to attack. Second, the Allies failed to develop a unified intelligence network capable of assessing the information that indicated the timing and target of the German attack. Finally, a well-executed German security and deception plan surprised the Allies. The well-executed German offensive manipulated both Allied intelligence and the Anglo-American coalition.
Date: August 1998
Creator: Blanchette, C. Scott (Crispin Scott)
Partner: UNT Libraries

Primitive Substitutive Numbers are Closed under Rational Multiplication

Description: Lehr (1991) proved that, if M(q, r) denotes the set of real numbers whose expansion in base-r is q-automatic i.e., is recognized by an automaton A = (Aq, Ar, ao, δ, φ) (or is the image under a letter to letter morphism of a fixed point of a substitution of constant length q) then M(q, r) is closed under addition and rational multiplication. Similarly if we let M(r) denote the set of real numbers α whose base-r digit expansion is ultimately primitive substitutive, i.e., contains a tail which is the image (under a letter to letter morphism) of a fixed point of a primitive substitution then in an attempt to generalize Lehr's result we show that the set M(r) is closed under multiplication by rational numbers. We also show that M(r) is not closed under addition.
Date: August 1998
Creator: Ketkar, Pallavi S. (Pallavi Subhash)
Partner: UNT Libraries

The Destruction of the Imagery of Saint Thomas Becket

Description: This thesis analyzes the destruction of imagery dedicated to Saint Thomas Becket in order to investigate the nature of sixteenth-century iconoclasm in Reformation England. In doing so, it also considers the veneration of images during the late Middle Ages and the Renaissance. Research involved examining medieval and sixteenth-century historical studies concerning Becket's life and cult, anti-Becket sentiment prior to the sixteenth century, and the political circumstances in England that led to the destruction of shrines and imagery. This study provides insight into the ways in which religious images could carry multifaceted, ideological significance that represented diversified ideas for varying social strata--royal, ecclesiastical and lay.
Date: May 1998
Creator: Cucuzzella, Jean Moore
Partner: UNT Libraries

"The Best Stuff Which the State Affords": a Portrait of the Fourteenth Texas Infantry in the Civil War

Description: This study examines the social and economic characteristics of the men who joined the Confederate Fourteenth Texas Infantry Regiment during the Civil War and provides a narrative history of the regiment's wartime service. The men of the Fourteenth Infantry enlisted in 1862 and helped to turn back the Federal Red River Campaign in April 1864. In creating a portrait of these men, the author used traditional historical sources (letters, diaries, medical records, secondary narratives) as well as statistical data from the 1860 United States census, military service records, and state tax rolls. The thesis places the heretofore unknown story of the Fourteenth Texas Infantry within the overall body of Civil War historiography.
Date: December 1998
Creator: Parker, Scott Dennis
Partner: UNT Libraries

Exploratory Factor Analysis of the Geriatric Depression Scale Among Cardiac Patients

Description: The Geriatric Depression Scale (GDS) was originally designed as a measure for screening depression among elderly medical patients. Although this instrument is well validated among a general medical population, it has never been evaluated with specific regard to cardiac patients, the largest single group of medical patients over 40 years of age. A general cardiac sample of 655 patients completed the GDS within 10 weeks of the cardiac event. Exploratory factor analyses were conducted on the main sample, then on several subgroups of participants with regard to diagnostic category, gender, and age. The GDS generally produces factor structures with several symptom domains with a high rate of total variance. The myocardial infarction group endorsed general symptoms of depression whereas the coronary artery bypass graft group reported greater levels of despair regarding their condition. Overall, males primarily reported agitation and hopelessness while females reported symptoms of depressed mood.
Date: May 1998
Creator: Hupp, Gregory S.
Partner: UNT Libraries

Pretreatment Optimization of Fiberglass Manufacturing Industrial Wastewater

Description: Wastewater effluent produced in the fiberglass manufacturing industry contains a significant amount of total suspended solids. Environmental regulations require pretreatment of effluent before it is discharged to the municipal wastewater treatment plant. Chemical precipitation by coagulation and flocculation is the method of pretreatment used at the Vetrotex CertainTeed Corporation (VCT). A treatability study was conducted to determine conditions at which the VCT Wastewater Pretreatment Plant could operate to consistently achieve a total suspended solids concentration ≤ 200-mg/L. Jar tests varied pH, polymer dosage, and ferric sulfate dosage. Total suspended solids and turbidity were measured to evaluate treatment performance. The data were used to determine an optimum set of conditions under project guidelines. Of twelve polymers screened, BPL 594 was selected as the most effective polymer. For cost efficiency in the wastewater pretreatment operation, recommendations suggested that treatment chemical injection be electronically controlled according to turbidity of the treated effluent.
Date: December 1998
Creator: Dragoo, Ron
Partner: UNT Libraries

"These Whigs are Singing Songs Again!" Whig Songs as Campaign Literature Prior to the 1844 Presidential Race

Description: Whig campaign strategists in the presidential election of 1840 developed new campaign tactics that included widespread use of campaign songs. They used these songs to sing the praises of their own candidate and policies while at the same time attacking the opposing party's candidate and policies. As early as 1842 these songwriters began writing songs in anticipation of the campaign in 1844. Prior to the nomination of candidates in May, 1844, the Whigs had published several songbooks including hundreds of song titles. In addition to supporting the candidacy of Henry Clay as the Whig candidate, the songs ridiculed several potential Democratic candidates including Martin Van Buren, John C. Calhoun, James Buchanan, and others. Whigs also used imagery to support their candidate and attack the foe. Despite extensive efforts to influence the election with campaign songs, no hard evidence exists that documents the effect of campaign songs, either positively or negatively.
Date: May 1998
Creator: Page, James A. (James Allen), 1946-
Partner: UNT Libraries

Dangerous Changes? The Effect of Political Regime Changes on Life Integrity Violations, 1977-1993

Description: This study develops a model of different types of political regime changes and their effect on life integrity violations. The data covers 147 countries from 1977-1993. Basic bivariate analyses and multivariate pooled cross-sectional time series analyses employing Ordinary Least Squares regression with panel-corrected standard errors are used. The results show that political regime change in general has no effect on state-sponsored violence. Looking at different types of regime changes, the regression analysis indicates that change from democracy to anocracy is positively correlated with levels of repression at the level of p < .001. A change toward democracy from autocracy is negatively related to human rights violations at the level of p < .01, once relevant control variables are considered.
Date: August 1998
Creator: Zanger, Sabine C. (Sabine Carmen)
Partner: UNT Libraries

No Fairy Godmothers: Essays on Life, Love, and Feminism

Description: Heterosexual romance and marriage are institutionalized ideals in our society, set forth, in part, through the portrayal of stereotyped gender roles in fairy tales, such as Cinderella, and by the mainstream media. This thesis explores the cultural messages aimed at women, which impose the necessity of altering oneself to achieve marriage, and offers feminist viewpoints. Using the form of the personal essay, I discuss the ideals of Cinderella, Prince Charming, marriage, and Happily Ever After as unrealistic, though still prevalent, given the popularity of books like The Rules: Time-tested Secrets for Capturing the Heart of Mr. Right, and Princess Diana as Cinderella icon. Essays on my own experience of marriage and divorce supplement the cultural issues, juxtaposing the personal and political toward a new paradigm for relationships.
Date: August 1998
Creator: Behnken, Julie A. (Julie Ann)
Partner: UNT Libraries

Quality-of-Service Provisioning and Resource Reservation Mechanisms for Mobile Wireless Networks

Description: In this thesis, a framework for Quality of Service provisioning in next generation wireless access networks is proposed. The framework aims at providing a differentiated service treatment to real-time (delay-sensitive) and non-real-time (delay-tolerant) multimedia traffic flows at the link layer. Novel techniques such as bandwidth compaction, channel reservation, and channel degradation are proposed. Using these techniques, we develop a call admission control algorithm and a call control block as part of the QoS framework. The performance of the framework is captured through analytical modeling and simulation experiments. By analytical modeling, the average carried traffic and the worst case buffer requirements for real-time and non-real-time calls are estimated. Simulation results show a 21% improvement in call admission probability of real-time calls, and a 17% improvement for non-real-time calls, when bandwidth compaction is employed. The channel reservation technique shows a 12% improvement in call admission probability in comparison with another proposed scheme in the literature.
Date: August 1998
Creator: Jayaram, Rajeev, 1971-
Partner: UNT Libraries

Identification and Characterization of the Pyrimidine Biosynthetic Operon in Streptomyces griseus

Description: To further understand the ATCase/DHOase bifunctional complex formed in Streptomyces, the genes encoding these and other pyrimidine enzymes were identified and characterized. Polymerase chain reaction (PCR) was utilized in this effort. Primers were constructed by selecting conserved regions of pyrimidine genes from known gene and protein sequences of a wide variety of organisms. These sequences were then optimized to Streptomyces codon usage. PCR products were obtained from internal sites within pyrimidine genes and also from primer combinations of different genes. The size, orientation, and partial sequence of the resulting products shows that Streptomyces has a gene organization of pyrR followed by pyrB, pyrC, carA, carB, and pyrF in an operon similar to that found in other Gram-positive bacteria.
Date: May 1998
Creator: Hooten, Jody J. (Jody Jeran)
Partner: UNT Libraries

Relationship of Leadership Importance Ratings and Leadership Competency Ratings Across Adjacent Management Levels

Description: Effective leadership can and does influence organizational performance. The Executive Success Profile, a multi-rater feedback instrument, was used to gather perception data on 51 executives and 310 senior managers of a large Fortune 500 electronics manufacturing company in regards to three critical leadership dimensions: visionary thinking, empowering others, and global perspective. Paired t-tests were run to compare the means of the two samples. Significant differences were found between executives and senior managers on the perceived importance of and ability to perform on the empowering others dimension. Additionally, correlational measures indicate a statistically significant relationship between importance and competence ratings on the empowering others and global perspective dimensions for executives, and on the empowering others dimension for senior managers.
Date: May 1998
Creator: Goldman, Joshua L. (Joshua Lee)
Partner: UNT Libraries

Investigating the Relationship Between Integrity and Job Turnover

Description: Integrity tests have become a widely used tool in modern-day selection systems. These instruments are generally designed to predict dishonest and counterproductive attitudes/behavior. A group of participants who had quit a job without notice was found to have higher scores on an Integrity/Pessimism scale (indicating low integrity and highly pessimistic attitudes) than an involuntary turnover group of those who had been fired or laid off. Post hoc analyses also found supporting evidence in that the quit without notice group also had higher expressed exit intentions scores (indicating negative attitudes toward current occupation/industry) and shorter average tenure than the involuntary (fired and laid off) group. The potential benefits of developing a predictive Integrity/Pessimism scale are discussed.
Date: August 1998
Creator: Simonini, Scott L.
Partner: UNT Libraries

Deserts I Have Known

Description: Deserts! Have Known contains a scholarly preface exploring why writers write, examining the characteristics offictionwriters, and addressing the importance of place, both emotional and geographical, in fiction. Four original short stories are included in this thesis. "Miracle at Mita" depicts an aging surfer trying to overcome his fear of commitment. "Coyote Man" explores a father's guilt and the isolation resulting from that guilt. "Time, and Time Again" traces a young woman's fear of marriage to her memory of her parents' relationship, and "Paraplegia" examines a young woman immobilized by her own lack of self-esteem. These stories are connected through their themes of isolation and reconnection.
Date: May 1998
Creator: Kinsey, Saralea
Partner: UNT Libraries

A Study of the Relationships among Teachers' Immediacy of Dress Factors and Affective Learning Factors: a Relational Communication Perspective

Description: This thesis examined the relationships among immediacy of dress factors and affective learning factors as they pertain to relational communication. College students (N = 482) completed questionnaires indicating perceptions of selected nonverbal immediacy behaviors associated with their teacher's attire. The research predicted that there would be relationships between and among power and affinity of dress, dress immediacy and nonverbal immediacy. Further predictions were made concerning the associations among these variables, affective learning outcomes, and other teacher criteria. Analysis indicated that power of dress, affinity of dress and dress immediacy were viable nonverbal immediacy concepts which related to affective learning outcomes. Research findings indicated that certain instructor variables may also influence these relationships.
Date: December 1998
Creator: Burks, Mark
Partner: UNT Libraries