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UNT Theses and Dissertations
- Structural holes and Simmelian ties: Exploring social capital, task interdependence, and individual effectiveness
Two contrasting notions have been put forward on how social capital may influence individual effectiveness in organizations. Burt (1992) sets forth the informational and control advantages that are possible by building an open network characterized by large numbers of structural holes. In contrast, Coleman (1990) and Simmel (1950) have suggested that network closure, exemplified by large numbers of Simmelian ties, enables actors to develop trust, cohesiveness, and norms which contribute to effectiveness. Simmelian ties are strong, reciprocal ties shared by three actors. It is proposed that an actor's network cannot be dominated by both structural holes and Simmelian ties. Thus, this study examines whether a moderating variable is at work. It is proposed that the actor's task interdependence in the workplace influences the relationship between network closure and individual effectiveness. Actors in less task interdependent environments will benefit especially from the information and control benefits afforded by a network characterized by structural holes. Conversely, actors in highly interdependent environments will benefit especially from the creation of trust and cooperation that result from large numbers of Simmelian ties. Data was collected on 113 subjects in three organizations. Subjects were asked to rate the strength of their relationship with all organization members and their own level of task interdependence. Contrary to expectations, nearly all subjects reported high levels of task interdependence. Raters in each organization provided individual effectiveness measures for all subjects. Hypotheses were tested using hierarchical set regression and bivariate correlation. The results indicated support for the hypothesized relationship of Simmelian ties with task interdependence. When examining all cases, no support was found for the hypothesized relationship of structural holes and Simmelian ties with individual effectiveness and of structural holes with task interdependence. Nonetheless, additional analyses provided some indication of an association between Simmelian ties and individual effectiveness. Task interdependence did not moderate the relationships between either Simmelian ties or structural holes and individual effectiveness. digital.library.unt.edu/ark:/67531/metadc2251/
- A Study of Franz Liszt's Concepts of Changing Tonality as Exemplified in Selected "Mephisto" Works
The purpose of this study is to analyze four late solo piano works of Franz Liszt that all bear the name "Mephisto" in their titles, in order to examine, identify and trace the development in the use of harmonic and melodic idioms that produced non-tonal or "omnitonic" effects, on the one hand, and to emphasize the need to duly accord Liszt a recognition of historical position as the nineteenth century's most influential avant garde composer whose attitude and approach had helped to shape much of the ideal of the atonal composition of this century, on the other. Chapter One presents the issues and the purpose of this study; Chapter Two investigates the principal forces that shaped Liszt's mature compositional style; Chapter Three identifies and discusses the requisites for tonal and atonal compositions; Chapter Four analyzes the four "Mephisto" dances: Waltz no.1 (1860); Polka (1883); Waltz no.3 (1883); and Bagatelle (1885). Chapter Five summarizes the findings from this study and attempts to identify in these late works of Liszt a pattern of conscientious, continuous, purposeful and progressive use of devices toward creating musical effect that would defy the established tonal requisites and undermine the tonal orientation in the composition. This study submits that it was Liszt who had first shown a way to free music from the shackles of prescribed idiomatic constraints, and to force us the listeners to approach and appreciate music for its own sound's sake. Additionally, this study submits that this effort of Liszt should be understood and appreciated in terms of programmatic association; that is, Liszt found in the persona of Mephisto the Diablo the ideal imagery for depicting the nature of the "music of the future" where tonality would be freed from any prescribed procedural requisites. digital.library.unt.edu/ark:/67531/metadc2246/
- Syllabus Outline for Genetics Lecture and Laboratory
This work is intended to be used as a teaching tool in conjunction with the text cited. It is written in outline format, highlighting the major concepts of each pertinent chapter. In this format, the concepts can be expanded upon at the discretion of the instructor. This work is to be used as a guide for lecture. The basic concepts contained in the outline are in such a format as to be able to work in more information regarding the subject matter if needed. The instructor can work from this outline as a starting point. Major topics in the chapters are highlighted, making lecture notes for the instructor easier to do. digital.library.unt.edu/ark:/67531/metadc2241/
- Symmetrical Features of Nikolai Medtner's Language: The Grzovaya Sonata, Opus 53 No. 2
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Nikolai Medtner's works evidence an intense interest in symmetrical designs. This concern is manifest at all levels, from the large scale proportions of his numerous ingenious sonata forms to the symmetrically constructed themes and motives. Medtner's works include several instances of palindromic themes and periods. Some palindromic contours are achieved through immediate inversion, creating expansive, symmetrical waves. One of Medtner's thumbprints, symmetrical contrary voice-leading, consists of two or more voices which systematically expand or contract in exact mirror fashion. The contrary movement is usually stepwise, and may be either chromatic or diatonic. Occasionally even larger intervals, such as thirds and fourths, are subjected to this favourite mirroring technique. Such symmetrical expansion and contraction often controls the harmonic progression of several consecutive bars. One of the most striking aspects of Medtner's music is his sophisticated harmonic language. He was fascinated with symmetrical harmonic designs, such as the tritone, the French sixth chord, and the octatonic scale, and made endless and increasingly intricate explorations into these stuctures and the ways in which these apparently nontonal, non-hierarchical forms could be coordinated with the fundamental hierarchy of asymmetrical tonal forms, including triads, major and minor scales, and tonic-dominant relations. Medtner's late work, the Grozovaya Sonata, Opus 53 No.2, is the most concentrated and abstract of his works. The themes are built from highly lapidar motives, giving this work an intensely angular, rigorously mathematical character. All the symmetrical hallmarks of Medtner's language are in abundant evidence in this great work. Features include the extensive symmetrical mirroring of the opening section, frequent use of contrary voice leading as a generator of harmonic progression, and constant tritone shifting. Medtner also builds sequential chains based on two more symmetrical forms, the diminished seventh and the augmented triad. Finally, the design of this unique single movement sonata may be a hybrid of sonata form with palindrome. The Grozovaya Sonata is a microcosm of the symmetrical features of Medtner's language. digital.library.unt.edu/ark:/67531/metadc2271/
- Techniques of Sensual Perception: The Creation of Emotional Pathways
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Some artists strive to create artwork that has aesthetic value. If a piece of artwork has the ability to capture the attention of an audience, it must contain strong sensual attributes. Thus, understanding how to design an art form to contain strong sensual attributes may increase the possibility of an aesthetic experience. Since aesthetics is an experience of sensations perceived when in contact with a creative form in any artistic discipline, it is necessary for an artist to understand the nature of the sensual experience. In understanding the sensual experience, artists may be able to create techniques to enhance the aesthetic experience of their work. My video piece, entitled Ararat is a study of methods to enhance the sensual experience. I hope to accomplish this by means of using techniques that optimize an audience's perceptual experience. digital.library.unt.edu/ark:/67531/metadc2276/
- Toward a rhetoric of marketing for high-tech services
The market for high-tech services is expanding, and writers will have to create more documents to market these services. Researchers note marked differences between traditional goods marketing and services marketing. A rhetorical framework for high-tech services marketing will give writers a tool for creating effective marketing messages. This study examines the five canons of rhetoric in their classical context, and then examines how the first professional teachers, the Sophists, used rhetoric to promote their services. The canons of rhetoric are then analyzed to show their modern significance. This study also considers visual rhetoric and how writers can use it effectively. This study shows that companies should promote service quality and strong service relationships through the rhetorical element of ethos. This study examines services marketing samples through a visual and verbal rhetorical framework, providing rhetorical insights that writers can use in their work. digital.library.unt.edu/ark:/67531/metadc2432/
- Use of the college student inventory to predict at-risk student success and persistence at a metropolitan university
Using Tinto's longitudinal model of institutional departure as the theoretical basis for this research, the purpose was to determine what extent selected motivational factors measured by the College Student Inventory (CSI) predict academic success and persistence of at_risk students at the University of North Texas (UNT). The study focused on United States citizens and permanent residents entering UNT as at_risk first_time freshmen admitted via individual approval for the fall 1994 semester. The 409 subjects were enrolled in a developmental course titled Personal and Academic Effectiveness where the CSI was administered during the first 2 weeks of class. Selected predictor variables were tested in relation to the separate criterion variables of grade point average and enrolled status during the 2nd and 4th years of the study. Grade point averages and enrollment data for the 1995-96 and 1997-98 academic years were extracted from the student information management system. The research design employed appropriate multiple regressions, multiple correlations, multiple discriminant analyses, and bivariate correlations. Findings confirmed the ability of five CSI factors to predict grade point average (p < .05) of at_risk students over the time frames used in this study. Nine factors predicting enrolled status were also significant at the .05 level; however, results were not meaningful in the 2nd year as factors classified 95% of all subjects as persisters. By the end of the 4th year, the factors were able to predict correct classification of both persisters and nonpersisters approximately 24% better than chance. This research provides support for Tinto's institutional departure model, particularly associated with pre_entry attributes and goals/commitments over time. The CSI is a viable instrument for use with at_risk first_time freshmen at a metropolitan university; however, required enrollment in a developmental course likely confounded the ability of selected variables to meaningfully predict enrolled status during the 2nd year. digital.library.unt.edu/ark:/67531/metadc2436/
- When "the Lie Becomes Truth": Four Historiographic Novels of the Twentieth Century
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This dissertation is an exploration of relationships between fiction and history as illuminated by historiographic fiction in general and the historiographic novel in particular. Here the term historiography is employed particularly in several of its many meanings: as the study of the materials and techniques of history, the study of what it means to be a historian, and the study of the philosophy of history. All of these are comprehended in the larger definition of issues pertaining to the writing of history. Four twentieth-century novels are presented and analyzed as historiographic novels. The common element in analysis of all the novels is the examination of historiographic material encoded in narrative, plot, characters, theme, structure or style. Each analysis focuses on one historiographic assumption or problem and brings in perspectives of historians or theorists of history as well as non-novelistic, critical perspectives of the authors themselves. E. M. Forster's Howards End (1910) is analyzed as an imaginative exposé of causality in historical thinking. All the King's Men by Robert Penn Warren (1946) is presented as a gloss on Isaiah Berlin's critique of Leo Tolstoy's second epilogue to War and Peace. Several essays by philosopher Eric Voegelin provide the theoretical framework for a historiographic analysis of Milan Kundera's The Book of Laughter and Forgetting (1978). The historiographic reading of Graham Swift's Waterland (1983) turns on the convergence of tensions between natural and human history with conflicting ideas of what constitutes revolution. In the process of these analyses, the study establishes general properties of the historiographic novel, as opposed to related categories (historical novel, nonfiction novel, and historiographic metafiction, for example). The isolation, description, and examination of historiographic novels as a category of history is offered as a contribution to the debate about the relationships, respectively, between narrative and objectivity, and experience and representation. digital.library.unt.edu/ark:/67531/metadc5508/
- Adolescent goals and their reports of what they do to achieve those Goals
Twenty-five adolescents' ranking of a set of equally highly valued goals on a Paired-comparisons Survey was compared with what adolescents say they are doing to achieve those goals. Results of the Paired-comparisons Survey showed that adolescents ranked career, interpersonal, and educational goals rather high and reputation and self-presentation goals rather low. Results analyzed with a contingency coefficient and biserial correlation indicated that not all number one ranked goals had the same value for a particular adolescent, and that number one ranked goals were correlated with verbal reports of concrete actions directed at achieving those goals. digital.library.unt.edu/ark:/67531/metadc2517/
- Analysis and Development of Post Secondary Curriculum on Sustainability
This thesis examines existing curricula at colleges and universities about sustainability and uses results to develop an introductory post secondary course curriculum. The proposed course is organized around three major elements - - science, philosophy, and economics - - all integral to understanding sustainability. Materials needed to teach the proposed 3-semester hour course including syllabus, teaching modules, transparencies, handouts, and exams were developed. Suggestions on how to teach a one-semester hour course on sustainability and a workshop on sustainability are also presented. The following research and curriculum development was a project established and funded by the Texas Energy Office, Renewable Resources and Sustainability Program. digital.library.unt.edu/ark:/67531/metadc2488/
- An Analysis of the Composition Process of Bartók's Eight Improvisations on Hungarian Peasant Songs, Op. 20
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This is a study of Bartók's compositional process as it relates to the Improvisations, Op. 20. The study, which focuses on the analysis of the draft manuscript 50PS1, compares the draft and other relevant sources with the final composition. Bartók's framework for the entire Improvisations is based on a compositional strategy of pairing individual improvisations combined with systematic revision of the draft copy by the introduction of tritones as tonal equivalents and movement by fifths from semitones, to achieve structural coherence in the individual improvisations. The tonic-dominant relationship is used to rearrange the individual improvisations in the draft and tritones as tonal equivalents are used to propel the movement between the improvisations to produce a coherent whole. digital.library.unt.edu/ark:/67531/metadc2465/
- An Analytical Study of the Variations on the Theme of Paganini's Twenty-fourth Caprice, Op. 1 by Busoni, Friedman, and Muczynski
The purpose of this study is to analyze sets of variations on Paganini's theme by three twentieth-century composers: Ferruccio Busoni, Ignaz Friedman, and Robert Muczynski, in order to examine, identify, and trace different variation techniques and their applications. Chapter 1 presents the purpose and scope of this study. Chapter 2 provides background information on the musical form "theme and variations" and the theme of Paganini's Twenty-fourth Caprice, Op. 1. Chapter 2 also deals with the question of which elements have made this theme so popular. Chapters 3,4, and 5 examine each of the three sets of variations in detail using the following format: theme, structure of each variation, harmony and key, rhythm and meter, tempo and dynamics, motivic development, grouping of variations, and technical problems. Chapter 6 summarizes the findings from this study and attempts to compare those elements among the three variations. Special attention is given to the application of the motivic cells, which are drawn from the original Paganini theme, in the development of succeeding variations. This study shows how these motivic cells contribute to the construction of new motives and melodies in each variation. Additionally, this study attempts to examine each composer's efforts in expanding variation procedure to the areas of structures and tempo markings in succeeding variations. digital.library.unt.edu/ark:/67531/metadc2548/
- Anatomy and Physiology Syllabus for Community Colleges
This syllabus includes both lecture notes and laboratory activities for a two-semester anatomy and physiology community college course. The syllabus is based on a 16-week semester that is comprised of a three-hour lecture section and a one-hour laboratory class each week. Both the lecture course and laboratory are necessary to fulfill the requirement for anatomy and physiology. Laboratory activities coincide with lectures to enhance understanding of each topic by providing visual and hands-on experiments for the concepts learned in the lecture. Laboratory quizzes will be given each week to help students maintain a working knowledge of the material learned in the laboratory. This course is appropriate for the typical anatomy and physiology student and should benefit both students who plan to major in biology and also those who are non-biology majors. Because subject matter in anatomy and physiology is quite difficult, the importance of attendance and good study skills is stressed. digital.library.unt.edu/ark:/67531/metadc2500/
- Assessing learning disabilities: Effectiveness of the symbol language and communication battery (SLCB)
This study examined whether the Symbol Language and Communication Battery (SLCB), a measure of learning disabilities (Lds), could identify children with Lds. In addition, possible behavioral differences were examined between unidentified and identified children. Eighty-five students (26 with school identified Lds; 59 unidentified) in the 4th and 5th grade participated in the study. Results indicated that the SLCB has good potential as a supplemental/screening measure of Lds. The SLCB was most effective in identifying children when SLCB diagnoses were restricted to the areas of reading, math, and writing. This study also found that teachers reported more behavioral problems in children with an SLCB diagnosis than children without a diagnosis, whereas unidentified children with SCLB diagnoses reported more behavioral problems than identified children. digital.library.unt.edu/ark:/67531/metadc2501/
- Attitudes toward Research and Teaching: Differences Between Faculty and Administrators at Three Saudi Arabian Universities
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This study is an investigation of the perceived attitudinal differences between administrators and faculty toward research and teaching at three Saudi Arabian universities, King Saud University (KSU), King Fahd University of Petroleum and Minerals (KFUPM), and the Islamic University (IU).
The researcher also investigated the effect of several variables, such as rank, university, and academic field on administrators and faculty members' attitudes toward teaching and research.
Little Attention has been given to studies that examine the differences between faculty and administrators with regard to their attitudes toward the priorities of teaching and research in Saudi Arabian institutions. Also, little research has been conducted regarding the effects of rank and academic field on faculty attitudes in Saudi Arabian institutions.
The author used a mail survey and collected 518 useable responses from a total of 710 questionnaires distributed. Factor analysis, MANCOVA, MANOVA, and ANOVA were the statistical methods employed in data analysis. Five attitudes were identified as a result of factor analysis: (a) attitudes toward teaching; (b) attitudes toward research; (c) mission; (d) promotion; and (e) interest. Results indicated that there was a significant difference between faculty and administrators regarding teaching and resea4rch. Administrators showed stronger attitudes toward teaching than faculty at all three universities. There were also significant differences regarding these attitudes in terms of rank, academic field, and university. Full professors had the strongest attitude toward a research emphasis compared to assistant professors. Assistant professors had the strongest teaching orientation. In addition, faculty members in the humanities had stronger teaching orientations preferences than did those in the natural and social sciences. Regarding the universities, faculty members at IU had the strongest teaching orientation preferences, whereas faculty members at KSU had the strongest research orientation preferences. digital.library.unt.edu/ark:/67531/metadc2482/
- Beyond the Human Voice: Francis Poulenc's Psychological Drama La Voix humaine (1958)
Francis Poulenc's one-character opera La Voix humaine (1958), a setting of the homonymous play by Jean Cocteau, explores the psychological complexities of an unnamed woman as she experiences the end of a romantic relationship. During the forty-minute work, she sings in a declamatory manner into a telephone, which serves as a sign of the unrevealed man at the other end. Poulenc uses musical motives to underscore the woman's changing emotional states as she recalls her past relationship. The musical dramaturgy in this work resignifies Debussy's impressionist symbolism by collapsing devices used in Pelléas et Mélisande in a language that shifts between octatonicism, chromaticism, harmonic and melodic whole tone passages, and diatonicism. This late work recontextualizes elements in Poulenc's Dialogues des Carmélites (1953-56), and the end of the opera provides a theme for his Sonate pour Clarinet et Piano(1962), as Poulenc reflects on his youthful encounters with Cocteau, Erik Satie, and Les Six. digital.library.unt.edu/ark:/67531/metadc2543/
- Body Matters: Gary Snyder, The Self and Ecopoetics
Gary Snyder has offered, in poems and essays, ways to acknowledge the interrelationships of humans with the more-than-human. He questions common notions of selfness as well as understandings of what it is to be human in relationship to other species and ecosystems, and he offers new paradigms for the relationship between cultures and the ecosystems in which these cultures reside. These new paradigms are rooted in a reevaluation of our attitudes toward our physical bodies which impacts our relationship to the earth and raises new possibilities for an ecological spirituality or philosophy. The sum of Snyder's endeavors is a foundation for an understanding of ecopoetics.
Snyder's poem "The Trail is Not a Trail" is an interesting place to begin examining how human perceptions of the self are central to the kinds of relationships that humans believe are possible between our species and everything else. In this poem there is a curious fusion of the speaker and the trail. In fact, with each successive line they become increasingly difficult to separate. The physical self is central to Snyder's poetry because his is a poetry of the self physically rooted in ever-shifting relationship with the biosphere.
The relationship of the self to the biosphere in Snyder's poetry also points toward a spiritual experience that can be called ecomysticism, by which I mean the space where new ecological paradigms and mystical understandings of the world overlap.
Ecomysticism goes beyond mysticisms that describe a spiritual being longing for supernatural experience while being "unfortunately" trapped in a physical body. Ecomysticism emphasizes the spiritual and physical interrelatedness or interconnectedness of all matter, the human and the more-than-human.
The integration of the spiritual and physical aspects of the self is only possible through an awareness of the interrelatedness of the self and the non-human. New paradigms for the self are thus central to ecopoetics, a poetics that seeks to heal the rift between humans and the biosphere. digital.library.unt.edu/ark:/67531/metadc2513/
- Calling Up the Dead
Calling Up the Dead is a collection of seven short stories which all take place over the final hours of December 31, 1999 and the first few hours of January 1, 2000. The themes of time, history, and the reactions toward the new millennium (positive, negative, indifferent) of a variety of cultures are addressed. Each of the six major continents has a story, along with its cultural perspective, delivered by narrators both young and oldthree female, three male and one balcony. digital.library.unt.edu/ark:/67531/metadc2439/
- The Categorization and Use of Three Dimensional Computer Generated Special Effects in Film
There has been a growing trend in the film industry in the use of three dimensional computer generated images (3D CGI) for special effects. With the popularity of this relatively new medium comes the need for new terminology. This exploration developed a general system of classification for 3D CGI effects for use in film. This system was based on a study of various writings about the significant films, which employ 3D CGI effects. A three-group system of classification system was developed. The three-group system was composed of the Elements Group, Level of Reality Group, and the Kind Group. These terms were developed to aid in the day-to-day production of 3D CGI special effects in the future. digital.library.unt.edu/ark:/67531/metadc2522/
- Charge Collection Studies on Integrated Circuit Test Structures using Heavy-Ion Microbeams and MEDICI Simulation Calculations
Ion induced charge collection dynamics within Integrated Circuits (ICs) is important due to the presence of ionizing radiation in the IC environment. As the charge signals defining data states are reduced by voltage and area scaling, the semiconductor device will naturally have a higher susceptibility to ionizing radiation induced effects. The ionizing radiation can lead to the undesired generation and migration of charge within an IC. This can alter, for example, the memory state of a bit, and thereby produce what is called a "soft" error, or Single Event Upset (SEU). Therefore, the response of ICs to natural radiation is of great concern for the reliability of future devices. Immunity to soft errors is listed as a requirement in the 1997 National Technology Roadmap for Semiconductors prepared by the Semiconductor Industry Association in the United States. To design more robust devices, it is essential to create and test accurate models of induced charge collection and transport in semiconductor devices. A heavy ion microbeam produced by an accelerator is an ideal tool to study charge collection processes in ICs and to locate the weak nodes and structures for improvement through hardening design. In this dissertation, the Ion Beam Induced Charge Collection (IBICC) technique is utilized to simulate recoil effects of ions in ICs. These silicon or light ion recoils are usually produced by the elastic scattering or inelastic reactions between cosmic neutrons or protons and the lattice atoms in ICs. Specially designed test structures were experimentally studied, using microbeams produced at Sandia National Laboratories. A new technique, Diffusion Time Resolved IBICC, is first proposed in this work to measure the average arrival time of the diffused charge, which can be related to the first moment (or the average time) of the arrival carrier density at the junction. A 2D device simulation tool, the MEDICI code, and heavy-ion microbeams are used to calculate and measure charge collection and relative arrival time on stripe-like test junctions. The MEDICI simulation is in qualitative and sometimes even quantitative agreement with the microbeam measurements. The amount of charge collection and the magnitude of average arrival time for diffused charge collection can be crucial to understanding and mitigating radiation induced circuit malfunctions during normal IC operations. digital.library.unt.edu/ark:/67531/metadc2469/
- The Cluster Hypothesis: A visual/statistical analysis
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By allowing judgments based on a small number of exemplar documents to be applied to a larger number of unexamined documents, clustered presentation of search results represents an intuitively attractive possibility for reducing the cognitive resource demands on human users of information retrieval systems. However, clustered presentation of search results is sensible only to the extent that naturally occurring similarity relationships among documents correspond to topically coherent clusters. The Cluster Hypothesis posits just such a systematic relationship between document similarity and topical relevance. To date, experimental validation of the Cluster Hypothesis has proved problematic, with collection-specific results both supporting and failing to support this fundamental theoretical postulate.
The present study consists of two computational information visualization experiments, representing a two-tiered test of the Cluster Hypothesis under adverse conditions. Both experiments rely on multidimensionally scaled representations of interdocument similarity matrices. Experiment 1 is a term-reduction condition, in which descriptive titles are extracted from Associated Press news stories drawn from the TREC information retrieval test collection. The clustering behavior of these titles is compared to the behavior of the corresponding full text via statistical analysis of the visual characteristics of a two-dimensional similarity map. Experiment 2 is a dimensionality reduction condition, in which inter-item similarity coefficients for full text documents are scaled into a single dimension and then rendered as a two-dimensional visualization; the clustering behavior of relevant documents within these unidimensionally scaled representations is examined via visual and statistical methods.
Taken as a whole, results of both experiments lend strong though not unqualified support to the Cluster Hypothesis. In Experiment 1, semantically meaningful 6.6-word document surrogates systematically conform to the predictions of the Cluster Hypothesis. In Experiment 2, the majority of the unidimensionally scaled datasets exhibit a marked nonuniformity of distribution of relevant documents, further supporting the Cluster Hypothesis.
Results of the two experiments are profoundly question-specific. Post hoc analyses suggest that it may be possible to predict the success of clustered searching based on the lexical characteristics of users' natural-language expression of their information need. digital.library.unt.edu/ark:/67531/metadc2444/
- Comparative Models of the Impact of Social Support on Psychological Distress in Cancer Patients
This study tested the relationship between Social Support, Psychological Distress, and Illness Stress in individuals who report cancer as a health condition. This study was based on archival data obtained from the Wave 1 of the Health and Retirement Study (HRS). The HRS provides a nationally representative sample of individuals aged 51 to 61 in 1992 and their spouses. The study sample was limited to cancer patients with a spouse or partner (n = 503).
A structural equation modeling analysis procedure was used to test the theoretical models. Measures of social support were limited to variables assessing the participant's satisfaction with social support. Evidence was found for the Stress Prevention and the Support Deterioration models. This is congruent with previous research using measures of social support perception. Both the Stress Prevention and the Support Deterioration models predict a negative relationship between Illness Stress and Social Support.
In addition, a univariate analysis of variance was used to test the stress buffering model. Similarly to other studies measuring the individual's degree of integration, or its perception, in the social network, the present research supported the only the Main Effect model and not the Stress Buffering model. digital.library.unt.edu/ark:/67531/metadc2533/
- A Comparison Study of Individual and Group Play Therapy In Treating Kindergarten Children With Adjustment Problems
This study was designed to determine the effectiveness of individual child-centered play therapy in the elementary school in: 1) enhancing the self-concept of kindergarten children who are experiencing adjustment difficulties; 2) decreasing the overall behavioral problems of kindergarten children experiencing adjustment difficulties 3) decreasing externalizing behavior problems such as aggression and delinquency of kindergarten children experiencing adjustment difficulties; 4) decreasing the internalizing behavior problems such as withdrawal, somatic complaints, anxiety and depression of kindergarten children experiencing adjustment difficulties; 5) increasing parental perception of change in the problematic behaviors of kindergarten children experiencing adjustment difficulties; and 6) enhancing self-control in kindergarten children experiencing adjustment difficulties. A secondary objective was to compare the participants involved in individual child-centered play therapy with participants in a previous study who were involved in child-centered group play therapy on the above named dimensions.
The experimental group, consisting of 14 kindergarten children experiencing adjustment difficulties, received 10-12, 30-minute individual play therapy sessions in a 12 week period in their elementary school. The comparison group, utilized from the 1999 McGuire study, consisted of 15 children with adjustment problems and received 12-14, 45-minute group play therapy sessions in 14 weeks in their elementary school. The control group, consisting of 13 children experiencing adjustment problems, received no play therapy intervention over a 12 week period.
An Analysis of Covariance revealed significant findings in 1 of the 6 hypotheses and one subscale hypothesis examining the effectiveness of individual play therapy versus the wait list control group. Specifically, children with adjustment problems in the experimental group exhibited a significant reduction in total behavior problems and a significant reduction in externalizing behavior problems as measured by the Child Behavior Checklist-Parent Form (CBCL). Additionally, an Analysis of Covariance revealed significant findings in 1 of the 6 hypotheses examining the comparison of the effectiveness of individual play therapy versus the group play therapy comparison group from McGuire (1999). Individual play therapy was significantly more effective than group play therapy in helping children maintain an acceptable level of classroom behaviors as perceived by teachers on the Early Childhood Behavior Scale (ECBS). digital.library.unt.edu/ark:/67531/metadc2504/
- Conformational Studies of Myosin and Actin with Calibrated Resonance Energy Transfer
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Resonance energy transfer was employed to study the conformational changes of actomyosin during ATP hydrolysis. To calibrate the technique, the parameters for resonance energy transfer were defined. With conformational searching algorithms to predict probe orientation, the distances measured by resonance energy transfer are highly consistent with the atomic models, which verified the accuracy and feasibility of resonance energy transfer for structural studies of proteins and oligonucleotides.
To study intramyosin distances, resonance energy transfer probes were attached to skeletal myosin's nucleotide site, subfragment-2, and regulatory light chain to examine nucleotide analog-induced structural transitions. The distances between the three positions were measured in the presence of different nucleotide analogs. No distance change was considered to be statistically significant. The measured distance between the regulatory light chain and nucleotide site was consistent with either the atomic model of skeletal myosin subfragment-1 or an average of the three models claimed for different ATP hydrolysis states, which suggested that the neck region was flexible in solution. To examine the participation of actin in the powerstroke process, resonance energy transfer between different sites on actin and myosin was measured in the presence of nucleotide analogs. The efficiencies of energy transfer between myosin catalytic domain and actin were consistent with the actoS1 docking model. However, the neck region was much closer to the actin filament than predicted by static atomic models. The efficiency of energy transfer between Cys 374 and the regulatory light chain was much greater in the presence of ADP-AlF4, ADP-BeFx, and ADP-vanadate than in the presence of ADP or no nucleotide. These data detect profound differences in the conformations of the weakly and strongly attached crossbridges which appear to result from a conformational selection that occurs during the weak binding of the myosin head to actin.
The resonance energy transfer data exclude a number of versions of the swinging lever arm model, and indicate that actin participation is indispensable for conformational changes leading to force generation. The conformational selection during weak binding at the actomyosin interface may precock the myosin head for the ensuing powerstroke. digital.library.unt.edu/ark:/67531/metadc2438/
- The correlation between a general critical thinking skills test and a discipline specific critical thinking test for associate degree nursing students
In 1997, NLNAC added critical thinking as a required outcome for accreditation of associate degree nursing (ADN) programs. Until recently general critical thinking tests were the only available standardized critical thinking assessment tools. The emphasis has shifted to discipline specific tools.
This concurrent validity study explored the correlation between two critical thinking tests, a general skills test, the California Critical Thinking Skills Test (CCTST) and a discipline specific test, the Arnett Critical Thinking Outcome Evaluation (CTOE). Both tests are based on the same definition of critical thinking. The CCTST, developed in 1990, covers discipline neutral content in multiple choice items. The CTOE, a free entry, written response test developed in 1998, assesses critical thinking in nursing situations using a partial credit model.
A convenience sample of 434 sophomore ADN students from 9 programs in Texas completed the demographic survey and critical thinking tests in 1999. The sample was 87.9% female and 74.2% Caucasian, with a mean age of 31, mean GPA of 3.13, mean 3.7 years healthcare employment experience, mean CCTST score of 15.0023 and mean CTOE of 82.69. The sample also included 22.4% current LVNs, 15.7% with prior degrees and 53.5% in the first generation of their family to go to college.
With Pearson correlation, three of four hypotheses concerning correlation between CCTST and CTOE scores were accepted, showing weak but significant correlation. GPA positively correlated but healthcare employment experience, first generation and minority status negatively correlated with CCTST scores. GPA correlated positively with CTOE scores. Stepwise multiple linear regression with CCTST scores retained GPA, healthcare employment experience, prior degree, and first generation in college status.
The significant, positive correlation between CCTST and CTOE scores was weaker than expected. This may be due to the different formats of the tools, or a fundamental difference between a general critical thinking skills test and a discipline specific tool. Critical thinking is highly contextually sensitive and disciplines emphasize skills differently. Both tests may be useful in a critical thinking assessment program since they measure different aspects and contribute to a composite picture of critical thinking. Research should continue on discipline specific tools. digital.library.unt.edu/ark:/67531/metadc2505/
- Creating a criterion-based information agent through data mining for automated identification of scholarly research on the World Wide Web
This dissertation creates an information agent that correctly identifies Web pages containing scholarly research approximately 96% of the time. It does this by analyzing the Web page with a set of criteria, and then uses a classification tree to arrive at a decision.
The criteria were gathered from the literature on selecting print and electronic materials for academic libraries. A Delphi study was done with an international panel of librarians to expand and refine the criteria until a list of 41 operationalizable criteria was agreed upon. A Perl program was then designed to analyze a Web page and determine a numerical value for each criterion.
A large collection of Web pages was gathered comprising 5,000 pages that contain the full work of scholarly research and 5,000 random pages, representative of user searches, which do not contain scholarly research. Datasets were built by running the Perl program on these Web pages. The datasets were split into model building and testing sets.
Data mining was then used to create different classification models. Four techniques were used: logistic regression, nonparametric discriminant analysis, classification trees, and neural networks. The models were created with the model datasets and then tested against the test dataset. Precision and recall were used to judge the effectiveness of each model. In addition, a set of pages that were difficult to classify because of their similarity to scholarly research was gathered and classified with the models.
The classification tree created the most effective classification model, with a precision ratio of 96% and a recall ratio of 95.6%. However, logistic regression created a model that was able to correctly classify more of the problematic pages.
This agent can be used to create a database of scholarly research published on the Web. In addition, the technique can be used to create a database of any type of structured electronic information. digital.library.unt.edu/ark:/67531/metadc2459/
- Decision making factors in child caregiver reporting of child abuse and neglect
This study investigated decision making factors used by child caregivers to identify suspected child abuse and neglect and collected data on caregiver training in the recognition and reporting of suspected child abuse and neglect.
Data was collected in July 1999 in fourteen north Texas childcare programs. One hundred twenty three teaching and administrative staff completed a survey based on Jacobson, A., Glass, J. and Ruggiere, P. (1998). Five teachers and five administrators chosen for convenience were read eleven vignettes describing possibly abusive situations to decide whether they were reportable or non-reportable, and to indicate factors used to make their decisions.
Administrators (50%) and teachers (13.3%) reported being unfamiliar with child abuse and neglect definitions and reporting laws. Two thirds (66.7%) of the administrators and 39.8% of the teachers had received specific training in recognizing and reporting child abuse and neglect. Administrators were more likely than teachers to report suspected child abuse and neglect. Teachers often reported to program administrators rather than state designated authorities. All subjects relied on information about children, but administrators also used information about parents, with teachers more likely to make excuses for parental actions. With 110 reporting opportunities, training was cited as a factor only twice by administrators. No teachers made reports to anyone other than program administrators, a factor named deference in this study. Four of five administrators expected deference from teachers when reporting decisions were made.
Present training in the recognition and reporting of suspected child abuse and neglect is inadequate. Caregivers need additional training in differences between accidental and intentional injuries, detection of child sexual abuse and emotional neglect, recognition and assessment of injuries among infants and toddlers, and mandated reporting procedures. Further research on optimal training for accurate reporting of suspected abuse and neglect is needed. A mandate to report to authorities outside the child care center should be clarified in state law. Licensing individuals as well as programs would strengthen reporting by caregivers. digital.library.unt.edu/ark:/67531/metadc2527/
- Depression, anxiety, self-esteem, and coping in children and adolescents newly diagnosed with cancer and children and adolescents on cancer treatment for a period of seven months or longer
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Differences in self-reported depression, anxiety, self-esteem, and coping were evaluated in two groups of pediatric oncology patients: newly diagnosed (less than six months post-diagnosis) (n=5) and patients on cancer treatment for seven months or longer (n=5). Participants (6 males, 4 females, ages 7-17 years) completed the Children's Depression Inventory (CDI), the State-Trait Anxiety Inventory for Children (STAIC), and the Culture-Free Self-Esteem Inventory (CFSEI-2); nine of the ten participants discussed in a semi-structured interview their personal experiences and feelings about having cancer. Although the newly diagnosed group had a higher mean score on the CDI than the 7 months or greater group, the difference was not significant (p = .054). The newly diagnosed group also had higher mean state and trait anxiety scores on the STAIC, indicating higher anxiety levels, and a slightly lower CFSEI-2 mean score, indicating slightly lower self-esteem than the 7 months or greater group, but differences were not at a statistically significant level (p>.05). digital.library.unt.edu/ark:/67531/metadc2467/
- The Design and Implementation of an Intelligent Agent-Based File System
As bandwidth constraints on LAN/WAN environments decrease, the demand for distributed services will continue to increase. In particular, the proliferation of user-level applications requiring high-capacity distributed file storage systems will demand that such services be universally available. At the same time, the advent of high-speed networks have made the deployment of application and communication solutions based upon an Intelligent Mobile Agent (IMA) framework practical. Agents have proven to present an ideal development paradigm for the creation of autonomous large-scale distributed systems, and an agent-based communication scheme would facilitate the creation of independently administered distributed file services. This thesis thus outlines an architecture for such a distributed file system based upon an IMA communication framework. digital.library.unt.edu/ark:/67531/metadc2523/
- Dialogue: An Exhibition of Ceramic Sculpture
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I want the viewers of my work to participate with me in a common experience. How I choose to communicate an experience in the work is intended to effect the viewer's level of understanding and participation. Toward this end, an exploration of nontraditional self-portraiture involving the viewer in a relationship with the artist will be used to maintain the visual dialogue imparted through the work. Utilization of recognizable symbols and icons within the work is meant to increase the clarity of my communication enhancing the viewer's involvement in the common experience. Color, as a concern will relate to the increased access and interest of the work to the viewer's experience and understanding. digital.library.unt.edu/ark:/67531/metadc2470/
- Disaster Preparedness: A Procedure Manual for a Nursing Home
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Disaster or emergency situations have the potential for serious impact on the safety and security of both residents and staff in a nursing home. Furthermore, federal and state laws require that all nursing facilities be prepared in case of an emergency or disaster. The first part of this document is an introduction and rationale for the development of a nursing home disaster plan. The second part is a procedure manual developed for a nursing home in Oklahoma, outlining emergency actions and recovery procedures for various types of disasters, followed by a list of emergency telephone contacts of key personnel and services both inside and outside the nursing facility. digital.library.unt.edu/ark:/67531/metadc2452/
- The effect of mode and intensity on VO2 kinetics in the severe intensity domain
The purpose of this study was to evaluate the effect of mode and intensity on VO2 kinetics in the severe intensity domain. Seventeen participants completed 3-7 tests each on a cycle ergometer and treadmill. For each test, Tfatigue, VO2max, Tmean response, VO2GAIN, TVO2max and T@VO2max were determined. Linear regression techniques were used to describe the relationship between TVO2max and Tfatigue .
VO2max values were higher in running. The VO2 response profile was faster for running than cycling and faster at higher intensities.
The faster VO2 response in running may be associated with larger active muscle mass or differences in muscle activation patterns. The faster response at higher intensities may suggest that VO2 response is driven by O2 demand. digital.library.unt.edu/ark:/67531/metadc2493/
- The effect of three different levels of skill training in musical timbre discrimination on alphabet sound discrimination in pre-kindergarten and kindergarten children
The purpose of this study was to investigate the effects of three different levels of skill training in musical timbre discrimination on alphabet sound discrimination in pre-kindergarten and kindergarten children.
The findings of prior investigations indicated similarities between aural music and language perception. Psychoacoustic and neurological findings have reported the discrimination of alphabet quality and musical timbre to be similar perceptual functions and have provided, through imaging technology, physical evidence of music learning simultaneously stimulating non-musical areas of the brain.
This investigator hypothesized that timbre discrimination, the process of differentiating the characteristic quality of one complex sound from another of identical pitch and loudness, may have been a common factor between music and alphabet sound discrimination. Existing studies had not explored this relationship or the effects of directly teaching for transfer on learning generalization between skills used for the discrimination of musical timbre and alphabet sounds.
Variables identified as similar from the literature were the discrimination of same- different musical and alphabet sounds, visual recognition of musical and alphabet pictures as sound sources, and association of alphabet and musical sounds with matching symbols.
A randomized pre-post test design with intermittent measures was used to implement the study. There were 5 instructional groups. Groups 1, 2,and 3 received one, two and three levels of skill instruction respectively. Groups 4 received three levels of skill training with instruction for transfer; Group 5 traditional timbre instruction. Students were measured at the 5th (Level 1), 10th (Level 2), 14th (Level 3), and 18th (delayed re-test), weeks of instruction.
Results revealed timbre discrimination instruction had a significant impact on alphabet sound-symbol discrimination achievement in pre-kindergarten and kindergarten children. Different levels of timbre instruction had different degrees of effectiveness on alphabet sound discrimination. Students who received three levels of timbre discrimination instruction and were taught to transfer skill similarities from music timbre discrimination to alphabet sound discrimination, were significantly more proficient in alphabet sound symbol discrimination than those who had not received instruction Posttest comparisons indicated skill relationships were strengthened by instruction for transfer. Transfer strategies had a significant impact on the retention of newly learned skills over time. digital.library.unt.edu/ark:/67531/metadc2544/
- Effectiveness of a Child-Centered Self-Reflective Play Therapy Supervision Model
This study investigated the effectiveness of a child-centered self-reflective play therapy supervision model with master's level counselor education graduate students. Specifically, this research determined if the self-reflective play therapy supervision model facilitated significant change in the master's level play therapists': (a) child-centered attitude; (b) knowledge of child-centered play therapy; and (c) confidence in applying play therapy skills. This study also measured change in the skills of: (d) tracking behavior, (e) reflecting content, (f) reflecting feelings, (g) facilitating decision-making and self-responsibility, (h) facilitating esteem-building and encouragement, (i) encouraging the child to lead, (j) setting limits, (k) ability to be congruent, (l) quality of non-verbal responses and (m) quality of verbal responses.
The experimental group students (N=15) utilized a 15 week self-reflective play therapy supervision model. This model consisted of a manual that reviewed the rationale and utilization of six therapeutic responses of child-centered play therapy, self-assessment forms that were completed after reviewing weekly play therapy session videos and weekly group supervision. The control group (N=15) received supervision during the 15 weeks but did not use the manual or the self-assessment forms. Prior to working with their first client and again at the end of the semester practicum, the play therapy supervisees completed the Play Therapy Attitude-Knowledge-Skills Survey. Each supervisee submitted a pre-tape and a post-tape of a play therapy session during their semester practicum. Four doctoral students rated play therapy session video tapes using the Play Therapy Skills Assessment form. The play therapy session video tapes were assessed by objective raters.
An independent t-test utilizing the gain score as the dependent variable revealed that play therapy supervisees in the experimental group showed a statistically significant increase in their ability to implement the skill of tracking behavior, facilitating decision-making and self-responsibility and facilitating esteem-building and encouragement. In addition, the experimental group supervisees showed a significant increase in the quality of their verbal responses and a marginally significant increase in their ability to reflect content and reflect feelings. Limited statistical significance in the play therapy supervisee's improvement of skills possibly could be attributed to the small sample size and lack of random assignment of participants to the experimental and control group.
The positive trends in the play therapy supervisees increased ability to implement play therapy skills warrants additional research of the self-reflective supervision model. digital.library.unt.edu/ark:/67531/metadc2531/
- Effects of a simulation game on trainees' knowledge and attitudes about age-related changes in learning and work behaviors of older workers
This investigation was conducted in response to the need for effective diversity awareness programs to help employers create intergenerational-friendly work environments. An experimental pre- and post-test control group randomized block design was employed to answer two research questions about the effects of a simulation game on knowledge and attitudes about age-related changes in learning and work behaviors of older workers. Participants were assessed immediately prior to and following the treatment, followed by a third assessment 60 days later. Necessary measures were taken to control for threats to the study's internal validity. An applicant pool comprised of human resource management and development practitioners and senior undergraduate students enrolled in human resource management courses yielded a sample of 65 participants. Chapter one introduces the study. Chapter two provides a review and summary of relevant literature on ageism in the workplace, training older workers, and simulation games. Chapter three describes the procedures and methods used to answer the research questions. Chapter four presents the results of all analytic procedures related to the investigation. Chapter five provides the conclusions and recommendations based on the findings of this investigation. In this investigation, the treatment group did not score significantly higher on their knowledge of age-related changes in learning and work behaviors of older workers than the control group following treatment. The attitudinal change experienced by the treatment group did not differ significantly from the attitudinal change experienced by the control group. Recommendations for further research include the following: (a) the disordinal interactive effect of the control group's performance on the knowledge measure during the 60-day interval between post assessments warrants further investigation, (b) the statistically significant change in attitude that occurred within each group during the 60-day interval following treatment warrants further investigation, and (c) more reliable instruments need to be developed for measuring the effects of heightened awareness following diversity interventions. digital.library.unt.edu/ark:/67531/metadc2537/
- Effects of daily oral injections of quercetin on implanted Colon-25 tumor growth in Balb-c mice
The effects of three oral dosages (0.4 mg, 0.8 mg, and 1.6 mg) of quercetin on Colon-25 tumors implanted in Balb-c mice were studied. The data in this study show that: (1) certain dosages of quercetin in alcohol solutions, reduces the weight, and size of implanted Colon-25 tumors in Balb-c mice, (2) these same dosages of quercetin all produce a profound neutrophilia combined with a significant lymphopenia at day 20 post-implantation, and (3) there was relatively little evidence of histological changes in the quercetin-treated tumor section which would indicate that the action(s) of quercetin is primarily at the subcellular level probably within the nuclei of the tumor cells. digital.library.unt.edu/ark:/67531/metadc2525/
- The Effects of Extinction on Human Performance Following Exposure to Fixed Ratio Schedules of Reinforcement
This experiment examined the effects of extinction on rate of responding and several topographical and temporal measures in adult humans. Three college students were trained to type the sequence 1•5•3 on a numeric keypad on a computer. The subjects were exposed to different fixed-ratio schedules of reinforcement (FR1, FR 5, and FR10 respectively) and extinction. Subjects displayed typical schedule performances during the maintenance phase of the experiment. During extinction the performances were disrupted, they showed a "break and run" pattern and a general decrease in responding. Also, new topographical and temporal patterns emerged. These data are consistent with those reported for non-human species and special human populations. digital.library.unt.edu/ark:/67531/metadc2547/
- Effects of Implementing a Competency-Based Performance Management System on Measures of Sales Performance
Use of competency models has exploded in recent years. Unfortunately, the empirical research to validate such systems is scarce. This study explores the relationship between Competency-based Performance Management Systems and sales performance to determine whether the use of these systems increases performance. Performance data from sales representatives in a medical products company were examined to determine changes in performance following the introduction of the Competency-based Performance Management System (N=64). Correlations with performance were obtained for each competency dimension to determine if any factors were highly correlated with performance and if state-factors were more positively correlated with performance than trait-factors (N=66). The study found no significant relationship between implementation of a Competency-based Performance Management System and sales performance. Also state-factors were not more positively correlated with sales performance than trait-factors. digital.library.unt.edu/ark:/67531/metadc2463/
- The Effects of Interspersed Trials and Density of Reinforcement on Accuracy, Looking Away, and Self-injurious Behavior of a Child with Autism
This research examines the effects of task interspersal and density of reinforcement on several behaviors of an autistic 6-year-old boy during the performance of a visual matching task and two auditory matching tasks. Experiment 1 investigated the effects of interspersing high and low accuracy tasks on correct matching responses, positions of matching responses, looking away, and self-injurious behavior (SIB). The effects of interspersed trials were evaluated using an ABAB multiple treatments design. Results indicated that interspersed trials produced slightly more correct responses during the visual matching task; however, correct responses decreased during the other two tasks. The use of interspersed trials also decreased looking away from the stimuli and SIB. Experiment 2 evaluated the effects of reinforcement density apart from task interspersal. Two conditions, reinforce-corrects-only and reinforce-all-responses, were compared in Experiment 2. Correct responses increased slightly for all three tasks during the reinforce-all-responses condition. Looking away and SIB were very infrequent throughout Experiment 2. digital.library.unt.edu/ark:/67531/metadc2485/
- Effects of receiver locus of control and interaction involvement on the interpretation of service complaints
This thesis examined how receivers who vary in Interaction Involvement and Locus of Control (LOC) might differ in their interpretations of service complaints. Locus of control was measured using Rotter's (1966) LOC scale, while Interaction Involvement was measured with Cegala's (1984) Interaction Involvement measure, including a separate assessment of the effects for each sub-scale. Individuals were assigned to four groups based on their Interaction Involvement and LOC scores. The groups were compared with one-another for differences in how complaints were interpreted. Four complaint categories and a corresponding scale were developed to measure these differences. The categories were Subject, Goal, Opportunity, and Accountability. Interaction Involvement was expected to affect how receivers interpret the subject and goal of a complaint, while LOC was predicted to affect understanding of the opportunity and accountability aspects. Two research questions explored possible relationships between the complaint categories and the independent variables for individuals within each group. The study's four hypotheses were not supported, although some evidence was found for a significant relationship between receiver Interaction Involvement and perceived complainant Opportunity, for External LOC individuals only. digital.library.unt.edu/ark:/67531/metadc2506/
- Emotional/behavioral disturbance and speech/language disorders: Prevalence of the dual diagnoses in a school-age population
The purpose of this study was to examine the prevalence of the comorbidity of emotional/behavioral disorders (EBD) and speech/language disorders among those students identified as under The Individuals With Disabilities Education Act criteria as emotionally disturbed and speech impaired. The literature reviewed included clinical and school settings that examined a cooccurrence of language disorders in the EBD population. Other research reported a lack of routine involvement of speech/language therapists in the assessment of the EBD population. Implications from clinical studies suggested a need for greater attention to language disorders in a multi- and interdisciplinary assessment.
This study investigated the prevalence of the dual occurrence of EBD and speech/language disorders in Grades 2 through 6 in Texas schools in light of the known research. Relationships in ethnicity and socioeconomic status were examined using chi-square test of independence. Aggregate data were obtained from the database of the Texas Pupil Information Management System and from survey questionnaire responses provided by speech therapists in selected districts.
The literature review focused on the impact of language in the development of appropriate personal interactions and communication skills, especially those relevant to pragmatic language factors and the implications of language competency in successful personal living and career roles and supported the importance of language as an important contributor to a person's life success and the correlation of EBD disabilities and speech/language disorders. Social skills instruction, the relationship of language, especially pragmatics, and social competencies for this population are included.
The results revealed a relationship between ethnicity and speech/language disorders among the students identified with EBD. In considering the population of students identified as EBD and language disordered, a significant relationship was found between ethnicity and socioeconomic status. Recommendations include suggestions for future research, assessment procedures, classroom interventions, and data collection methods. digital.library.unt.edu/ark:/67531/metadc2498/
- Empirical Evidence of Pricing Efficiency in Niche Markets
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Unique and proprietary data of the illiquid, one-year non cancelable for three month Bermudan swaps (1Y NC 3M swaps) and one-year non callable for three months Bermudan CDs (1Y NC 3M CDs), provides evidence of market efficiency. The 1Y NC 3M swap and 1Y NC 3M CD markets efficiently reflected unexpected economic information. The 1Y NC 3M swaption premiums also followed the European one-year into three-month (1Y into 3M) swaption volatilities.
Swaption premiums were computed by pricing non-optional instruments using the quoted 1Y NC 3M swap rates and the par value swap rates and taking the difference between them. Swaption premiums ranged from a slight negative premium to a 0.21 percent premium. The average swaption premium during the study period was 0.02 percent to 0.04 percent. The initial swaption premiums were over 0.20 percent while the final swaption premiums were 0.02 percent to 0.04 percent. Premiums peaked and waned throughout the study period depending on market uncertainty as reflected in major national economic announcements, Federal Reserve testimonies and foreign currency devaluations. Negative swaption premiums were not necessarily irrational or quoting errors. Frequently, traders obligated to provide market quotes to customers do not have an interest and relay that lack of interest to the customer through a nonaggressive quote.
The short-dated 1Y NC 3M swaption premiums closely followed 3M into 1Y swaption volatilities, indicating the 3M into 1Y swaption market closely follows the 1Y NC 3M swaption market and that similar market factors affect both markets or both markets efficiently share information. Movements in 1Y NC 3M swaption premiums and in 3M into 1Y swaption volatilities reflected a rational response by market participants to unexpected economic information. As market uncertainty decreased in the market place, risk measured both by swaption premiums and swaption volatilities decreased; vice verse when economic factors showed increases in economic uncertainty. digital.library.unt.edu/ark:/67531/metadc2466/
- Evidentiary Value of Condoms: Comparison of Durable Physical and Chemical Characteristics of Condoms
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Condom trace evidence must not be overlooked in sexual assault cases; understanding the chemical and physical characteristics of condoms is imperative if condoms are to be useful evidence. Previous research shows that condom identification is possible, but it is equally important to evaluate durability of condom residues versus time. Using FT-IR, this study examined vaginal swabs from subjects who self-sampled at intervals for up to 72 hours after having intercourse with a condom. This study investigated whether age and the stage of the menstrual cycle affected the durability of residues in the vagina over time. This study revealed that condoms containing nonoxynol-9, silicone-based lubricants, and particulates provide valuable information for identification, and that nonoxynol-9 specifically withstands the vaginal environment for up to 72 hours. Additionally, age and menstrual cycle both appeared to have an effect on the durability of residues although larger sample size is desirable. digital.library.unt.edu/ark:/67531/metadc2481/
- The Evolution of Form
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A craftsman’s work evolves with time, new forms arise and old forms become more refined. This research attempts to study the evolution of pots over a designated period of time. The key findings include that the approach to glazing was relatively unchanged by the evolution in the work. However,the refinements that occurred in the work allowed the glazes to impart wonderful characteristics to the forms on which they are used. digital.library.unt.edu/ark:/67531/metadc2473/
- An Examination Of The Variation In Information Systems Project Cost Estimates: The Case Of Year 2000 Compliance Projects
The year 2000 (Y2K) problem presented a fortuitous opportunity to explore the relationship between estimated costs of software projects and five cost influence dimensions described by the Year 2000 Enterprise Cost Model (Kappelman, et al., 1998) -- organization, problem, solution, resources, and stage of completion. This research was a field study survey of (Y2K) project managers in industry, government, and education and part of a joint project that began in 1996 between the University of North Texas and the Y2K Working Group of the Society for Information Management (SIM).
Evidence was found to support relationships between estimated costs and organization, problem, resources, and project stage but not for the solution dimension. Project stage appears to moderate the relationships for organization, particularly IS practices, and resources. A history of superior IS practices appears to mean lower estimated costs, especially for projects in larger IS organizations. Acquiring resources, especially external skills, appears to increase costs. Moreover, projects apparently have many individual differences, many related to size and to project stage, and their influences on costs appear to be at the sub-dimension or even the individual variable level. A Revised Year 2000 Enterprise Model is presented incorporating this granularity.
Two primary conclusions can be drawn from this research: (1) large software projects are very complex and thus cost estimating is also; and (2) the devil of cost estimating is in the details of knowing which of the many possible variables are the important ones for each particular enterprise and project. This points to the importance of organizations keeping software project metrics and the historical calibration of cost-estimating practices. Project managers must understand the relevant details and their interaction and importance in order to successfully develop a cost estimate for a particular project, even when rational cost models are used. This research also indicates that software cost estimating has political as well as rational influences at play. digital.library.unt.edu/ark:/67531/metadc2535/
- Exogenous Influences and Paths To Activism
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The focus of this research was to ascertain the indirect effects upon activism of intervening variables and recognized exogenous influences upon activism. In addition, this research also focused upon the differences and similarities of a recruited activist model and spontaneous activist model. Regression and path analysis were used to measure the direct and indirect effects of the exogenous and intervening variables. This research found that when the intervening variables, political interest, political awareness, exposure to media, altruism, and self-interest were introduced to both the recruited and spontaneous models, the direct effects of the variables were enhanced. digital.library.unt.edu/ark:/67531/metadc2453/
- An experimental study of teachers' verbal and nonverbal immediacy, student motivation, and cognitive learning in video instruction
This study used an experimental design and a direct test of recall to provide data about teacher immediacy and student cognitive learning. Four hypotheses and a research question addressed two research problems: first, how verbal and nonverbal immediacy function together and/or separately to enhance learning; and second, how immediacy affects cognitive learning in relation to student motivation. These questions were examined in the context of video instruction to provide insight into distance learning processes and to ensure maximum control over experimental manipulations.
Participants (N = 347) were drawn from university students in an undergraduate communication course. Students were randomly assigned to groups, completed a measure of state motivation, and viewed a 15-minute video lecture containing part of the usual course content delivered by a guest instructor. Participants were unaware that the video instructor was actually performing one of four scripted manipulations reflecting higher and lower combinations of specific verbal and nonverbal cues, representing the four cells of the 2x2 research design. Immediately after the lecture, students completed a recall measure, consisting of portions of the video text with blanks in the place of key words. Participants were to fill in the blanks with exact words they recalled from the videotape.
Findings strengthened previous research associating teacher nonverbal immediacy with enhanced cognitive learning outcomes. However, higher verbal immediacy, in the presence of higher and lower nonverbal immediacy, was not shown to produce greater learning among participants in this experiment. No interaction effects were found between higher and lower levels of verbal and nonverbal immediacy. Recall scores were comparatively low in the presence of higher verbal and lower nonverbal immediacy, suggesting that nonverbal expectancy violations may have hindered cognitive learning. Student motivation was not found to be a significant source of error in measuring immediacy's effects, and no interaction effects were detected between levels of student motivation, teacher verbal immediacy, and teacher nonverbal immediacy. digital.library.unt.edu/ark:/67531/metadc2487/
- Exploring Relationships Between Recalled Parenting and Anaclitic and Introjective Depression
This study related college students' remembered early relationships with parents to their depression symptoms and to dependent and self-critical subjective feelings. Undergraduates (N = 217, 118 female, 99 male) provided information regarding their current level of depression, overall functioning, subjective feelings of depression (Depressive Experiences Questionnaire), negative thoughts, interpersonal functioning, and recollections of their parents' behavior and attitudes. Depression symptoms were related to dependent and self-critical feelings and to recalled low parental care and high parental control. However, for women, paternal affection and, for men, paternal control, were unrelated to depression symptoms. Other results are inconclusive but, overall, provide evidence for the usefulness of Blatt's theory in assessing depression via dependent and self-critical subjective feelings. digital.library.unt.edu/ark:/67531/metadc2490/
- Filial Therapy Training with Undergraduate Teacher Trainees; Child-Teacher Relationship Training
This experimental research study investigated the effectiveness of the application of Child-Teacher Relationship training, adapted from child-centered play therapy procedures and skills training (filial therapy), with undergraduate teacher trainees. Specifically, this research determined if Child-Teacher Relationship training facilitated change in teacher trainees' interactions with children, parenting attitudes, and play therapy attitude knowledge and skills.
The experimental group of teacher trainees (n=18) received 10 weekly ninety minute training sessions in child-centered play therapy skills and procedures and conducted 7 weekly special play times with children. The comparison group (n=20) received supplemental training in child guidance during the ten weeks that included parent training and alternatives to corporal punishment. Experimental and comparison group participants completed pre-test and post-test measures, consisting of the Adolescent and Adult Parenting Attitudes Inventory (AAPI-2), the Play Therapy Attitudes, Knowledge, and Skills Survey (PTAKSS), and a videotaped special play time with a child which was rated using the Measurement of Empathy in Adult and Child Interactions (MEACI).
Analysis of covariance on adjusted post test means revealed that the teacher trainees in the experimental group demonstrated statistically significant ("<.05) increases in empathy towards children, allowing the child self direction, communication of acceptance, and involvement as measured by the MEACI. Significant ("<.05) increases were also reported on teacher trainees in the experimental group on play therapy attitudes, knowledge, and skills as measured by the PTAKSS. The experimental group demonstrated growth in level of empathy and adult-child role subscales on the AAPI, and positive trends (.07) were reported on the AAPI expectations of children subscale. digital.library.unt.edu/ark:/67531/metadc2538/
- Gestalt Work For the Actor: A Documentary Video Production
Gestalt Work for the Actor is a documentary about Dr. Renee Vincent's Gestalt acting exercise. Students are trained to recall powerful emotions and then employ the conjured passions into performance. This documentary examines the Gestalt acting exercise and what benefits it affords actors.
The accompanying production book explains the production processes: preproduction, production, and postproduction, as well as the theoretical approaches used in the documentary. digital.library.unt.edu/ark:/67531/metadc2516/