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  Partner: UNT Libraries
 Decade: 2000-2009
 Year: 2001
 Collection: UNT Theses and Dissertations
4-Ethoxymethylphenol: a novel phytoestrogen that acts as an agonist for human estrogen receptors.
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Estrogen is the natural agonist of the estrogen receptor (ER). However, certain plant-derived compounds or phytoestrogens have been identified that mimic estrogens and act as agonists and/or antagonists of ERs, depending on subtype and target tissue. Understanding how phytoestrogens interact with ERs, and therefore effect the estrogenic response, may prove beneficial in hormone replacement therapy and in the prevention and treatment of hormone-related diseases. Using Thin Layer Chromatography, gas chromatography/mass spectrometry (GC/MS), and proton nuclear nagnetic resonance (HNMR), I identified 4-ethoxymethylphenol (4EM) found in Maclura pomifera. While most phytoestrogens are heterocyclic compounds, 4EM is a simple phenol that acts as an agonist of ER-alpha and -beta in HeLa and MCF-7 cells. To study the effect of 4EM on ER-alpha and -beta activity, I performed transient transfection assays and showed that 4EM activates ER dependent gene transcription in a dose dependent manner in both ER subtypes. Further, 4EM- mediated transcription in ER-alpha, like estrogen, was enhance in the presense of co-activators, SRC-1 (steroid receptor coactivator-1), CBP (CREB binding proteins), and E6-AP (E6-associated protein) and inhibited by trans-4- hydroxytamoxifen (4HT). I found that 4EM was specific for ER and did not activate transcription of the progesterone receptor in HeLa cells. digital.library.unt.edu/ark:/67531/metadc3003/
D. A. Kolb’s Theory of Experiential Learning: Implications for the Development of Music Theory Instructional Material
This research project evaluates the effectiveness of specific music theory instructional strategies in terms of D. A. Kolb’s theory of experiential learning and Kolb’s typology of individual learning style. The project provides an original methodology for the adaptation of music theory instructional material to the individual learning style types described in Kolb’s typology. The study compares the relative effectiveness of two music theory instructional sequences, one of which is adapted for all of the learning style modalities described in Kolb’s typology, and the other adapted for only a limited number of Kolb’s learning style types. In order to compare the potential “learning outcomes” produced by these instructional sequences, a detailed study is proposed, in which computer based instruction (CBI) will deliver the instructional sequences to research participants and electronically record the participants’ responses. The current study demonstrates the effective aspects of the original methodology and suggests methods for the successful adaptation of music theory instructional material to individual student learning styles. digital.library.unt.edu/ark:/67531/metadc5813/
Accent and Grouping Structures in the String Quartets of Béla Bartók
The music of Béla Bartók is defined in part by its unique blend of rhythmic vitality and inventiveness, and his string quartets offer a glimpse into a consistency of technique evident throughout his compositional career. Bartók's rhythmic environments are primarily metrical, but many of his rhythmic configurations are placed in such a way as to potentially override established meter. It is necessary, therefore, to institute an analytical means by which the delineation and comparison of rhythmic structures both within and without the metrical context may be accomplished. An analytical method using Timepoint Accent Structures (TAS) allows for the comparison of rhythms resulting from patterns of accent produced by pitch onset, dynamic stress, articulation or any other accentual factors. Timepoint Grouping Structures (TGS) delineate the number of timepoints present in alternating groups/blocks in a texture, thereby allowing for the recognition of patterning created by these larger groups. By applying TAS and TGS analysis, relationships of rhythmic equivalency, rotation, retrograde, complementation, augmentation, diminution, subset, superset, exchange, compression and expansion are clearly confirmed in the string quartets. In addition, symmetrical structures and arithmetic progressions are discovered. In many ways, Bartók's rhythmic organization mimics his procedures of pitch structuring. digital.library.unt.edu/ark:/67531/metadc2820/
Accounting for human resources: Implications for theory and practice.
Knowledge workers are an important resource for the typical modern business firm, yet financial reporting ignores such resources. Some researchers contend that the accounting profession has stressed reliability in order to make the accounting appear objective. Others concur, noting that accounting is an insecure profession and adopts strict rules when faced with uncertainty. Accountants have promulgated a strict rule to expense human resource costs, although many know that such resources have future benefits. Some researchers suggest that any discipline must modify its language in order to initiate change toward providing useful social ameliorations. If accounting theorists extend this idea to the accounting lexicon.s description of investments in human resources, investors and other accounting user groups might gain greater insight into how a firm fosters and nourishes human capital. I tested three hypotheses related to this issue by administering an experiment designed to assess financial analysts. perceptions about alternative financial statement treatments of human resources in an investment recommendation task. I predicted that (1) analysts' perceptions of the reliability (relevance) of the information they received would decrease (increase) as the treatment of human resources increasingly violated GAAP (became more current-oriented), (2) analysts exposed to alternative accounting treatments would report a lower likelihood of recommending that their clients invest in the company in the task, and (3) financial analysts who ranked reliability (relevance) as a more important information quality would be less (more) likely to recommend that their clients buy the stock represented in the case because the treatment of human resources on the financial statements violated GAAP (was more current-oriented) as compared to analysts who ranked reliability (relevance) as being lower (higher) in importance. Analysts receiving financial statements with accounting treatments of human resource costs that violated GAAP judged such information as less reliable and were also less likely to recommend that their clients buy the stock in the task than analysts receiving financial statements that conformed to GAAP. Also, analysts who perceived reliability as a more important information quality reacted more negatively to a replacement cost approach to accounting for human resources than participants who perceived reliability as being less important. A potential confounding explanation of the results is the varied language used in the audit opinions included with the treatment financial statements. Whether explained by the audit opinion language or the actual differences contained in the financial statements, the results suggest that an important user group, financial analysts, may be subject to the aura of objectivity suggested by Porter in 1995. digital.library.unt.edu/ark:/67531/metadc3026/
Activating Space within the Object and the Site
I look at the world as a sculptor, examining physical constructs and implied meanings. My current research developed from my earlier studies of “containment” or, more specifically, “encapsulation,” creating visual, often physical, boundaries around selected content. Encapsulation confers a more active role than “containment”, a process rather than a result. This idea speaks to the issues of form, and asks the viewer to question the outside “shape of the form” in relation to the inside shape and content. My work focuses on exposed interior spaces and forms, allowing the viewer to enter the space physically as well as mentally and psychologically. Built in a large enough scale, the viewer could actually become the content. The sculpture’s interpretation revolves around the seen as well as the unseen. I built this duality into my work by using transparent and opaque materials. I also implemented small diameter stainless steel rod along with the transparent and opaque vinyl to reduce forms to their respective shapes and volumes. This approach allowed me to clean the “slate” of an object’s collective meaning and context, adapting it to the intent of my work. digital.library.unt.edu/ark:/67531/metadc5827/
Age-Dependent Effects Of Chronic GABAA Receptor Blockade In Barrel Cortex
GABAA receptor binding is transiently increased in rat whisker barrels during the second postnatal week, at a time when neurons in the developing rat cortex are vulnerable to excitotoxic effects. To test whether these GABAA receptors might serve to protect neurons from excessive excitatory input, polymer implants containing the GABAA receptor antagonist bicuculline were placed over barrel cortex for a 4-day period in young (postnatal days 8 - 12) and adult rats. In the cortex of young, but not adult rats, the chronic blockade of GABAA receptors resulted in substantial tissue loss and neuron loss. The greater loss of neurons in young rats supports the hypothesis that a high density of GABAA receptors protects neurons from excessive excitatory input during a sensitive period in development. digital.library.unt.edu/ark:/67531/metadc2760/
Alexander Johnson's Ni' Concerto (1994) - Concerto no. 1 for Piano and Orchestra: a Discussion of Influences from Africa, Eastern and Western Europe
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In the new generation of artists emerging in South Africa, Alexander Johnson is considered the most prolific young composer of his day. In a recent review in the Pretoria News, Johnson has been praised by eminent critic Paul Boekkooi as a composer who has “an ear for the exotic and knows exactly how to bring it off....” He continued by noting that his music is “mentally engrossing, pleasurable to the senses and seems refreshingly free from dogmatic formulas." Johnson writes for musicians and the general public to equal satisfaction. His accessible compositions and catching use of melodic materials have made his writings very popular both in South Africa and abroad. During his residency in Belgrade in 1993-94, Johnson met Croatian pianist Dorian Leljak. Impressed with Johnson's compositional ideas and output, Leljak commissioned a work from Johnson for piano and orchestra. The result was the Niš Concerto, which Johnson completed in April 1994. The world premiere took place on June 23, 1994 with the Niš Philharmonic Orchestra conducted by Anatoli Nowiestski with Dorian Leljak as soloist. The Niš Concerto received its South African premiere in 1995 during a simultaneous celebration for “Europe Day” and the new democracy of the Republic of South Africa. The Delegation of the European Commission of South Africa sponsored the celebration, which took place in the Aula Auditorium on the campus of the University of Pretoria. The performers included the Artium Symphony Orchestra, conducted by Dutch-born Prof. Henk Temmingh and Johnson himself as piano soloist. digital.library.unt.edu/ark:/67531/metadc2839/
American Choral Music in Late 19th Century New Haven: The Gounod and New Haven Oratorio Societies
This study examines two of the smaller American choral societies that together existed for just over 30 years, 1888 to 1919: The Gounod and New Haven Oratorio Societies of New Haven, Connecticut. These societies are important because, especially in the case of the New Haven Society, they were closely related to Yale University and the work of Horatio Parker. One must assume from the onset that the two choral groups examined in the following pages did not have the prominence of the many larger New England choral societies. However a more detailed knowledge about the struggles, successes, influence and leadership of two smaller societies illuminates a field of research in the history of American choral music that has been largely ignored. digital.library.unt.edu/ark:/67531/metadc2813/
An Analysis of Major American Riots: Issues in Riots and Riot Control
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By conducting sound research to understand the concepts surrounding rioting and efficient riot response tactics, professionals, especially whose main job is to ensure the tranquility in the society, will be better prepared to deal with all kinds of civil movements. The purpose of this study, consequently, is to meet the growing need for educational materials in this area and to provide riot response case studies, which demonstrate the numerous administrative challenges faced by law enforcement decision makers. In this study, seven major riots from throughout the United States are discussed including the Hay Market Riot of 1886, the Watts Riot of 1965, and Los Angeles Riots of 1992. Each riot case is studied in five different and independent stages: the setting and pre-disturbance situation, basic causes of the event, the disturbance situation, the response to the riot, and the aftermath of the incident. The study of all of these stages is intended to help police administrators acquire a general perspective on collective violence, and help them prevent future occurrences in their jurisdictions. In this thesis a special reference is given to the deficiencies of American riot policing and some recommendations were formed accordingly. Therefore, the study concludes with a list of general recommendations, which are crucially important for concerned officials to pay attention before, during, and after a riot. digital.library.unt.edu/ark:/67531/metadc2850/
An analysis of sales people's perceptions of performance appraisal criteria at a telecommunications corporation.
The purpose of this study was to identify and analyze sales people's perceptions of performance appraisal criteria in a telecommunications corporation. The study was prompted by the perceived disillusionment of the sales people with the current performance appraisal criteria. The perceptions of 67 sales people were assessed using a questionnaire developed by the researcher. One-way analysis of variance procedures (ANOVA) were used to determine if there were statistically significant differences in premise and telemarketing sales people's perceptions of performance appraisal criteria. Findings indicated that there were no statistically significant difference in premise and telemarketing sales people's perceptions of the 38 performance appraisal criteria statements. Findings did not indicate a statistically significant difference in premise and telemarketing sales people's perceptions of the performance criteria statements, the attitude or satisfaction statements, and the peripheral issue statements. Based on this study, the sales people appear to have clear perceptions of the performance appraisal criteria. digital.library.unt.edu/ark:/67531/metadc3051/
An Analysis of Teaching Periodicals for Aging Education Content
Ninety elementary public school teachers were surveyed to find out where they obtained their teaching ideas. Seven popular elementary-level teaching periodicals, dated 1989-1999, were analyzed for aging-related content, and compared with 27 of the National Academy for Teaching and Learning about Aging (NATLA) aspects of aging recommended for students' learning. Results indicate that public elementary teachers obtain their teaching ideas from various places: teaching institutes or workshops; other teachers; ideas or lessons they develop themselves; and teaching periodicals. A large percentage obtain lesson ideas from teaching periodicals that they browse or read. This finding may assist NATLA in making recommendations to particular editorial boards. Surprisingly, few teachers obtain their teaching ideas from state and local curricular mandates. When the periodical issues were analyzed, aging-related content was categorized in four ways: informational articles with selected teaching or learning activities; articles describing intergenerational programs or activities; book reviews with selected learning activities; and book review titles mentioning older adult characters. Category totals among the 7 periodicals were highest in book review titles mentioning older adult characters and book reviews with selected learning activities. The content was compared to NATLA's recommendations for students' learning. The findings were not significant. The aging aspect that appeared most often in book reviews with selected learning activities was that most living things have life cycles of patterned biological changes, and/or that death and disability can occur at any age. Whether we formally teach them about aging or not, children learn about it. Earlier studies indicate that even preschool children may stereotype the aging process and/or older adults. Curricular and instructional ideas provided in teaching materials, even in an informal format can provide education, which prepares children for real life experiences. digital.library.unt.edu/ark:/67531/metadc2771/
An Analysis of the Effect of Environmental and Systems Complexity on Information Systems Failures
Companies have invested large amounts of money on information systems development. Unfortunately, not all information systems developments are successful. Software project failure is frequent and lamentable. Surveys and statistical analysis results underscore the severity and scope of software project failure. Limited research relates software structure to information systems failures. Systematic study of failure provides insights into the causes of IS failure. More importantly, it contributes to better monitoring and control of projects and enhancing the likelihood of the success of management information systems. The underlining theories and literature that contribute to the construction of theoretical framework come from general systems theory, complexity theory, and failure studies. One hundred COBOL programs from a single company are used in the analysis. The program log clearly documents the date, time, and the reasons for changes to the programs. In this study the relationships among the variables of business requirements change, software complexity, program size and the error rate in each phase of software development life cycle are tested. Interpretations of the hypotheses testing are provided as well. The data shows that analysis error and design error occur more often than programming error. Measurement criteria need to be developed at each stage of the software development cycle, especially in the early stage. The quality and reliability of software can be improved continuously. The findings from this study suggest that it is imperative to develop an adaptive system that can cope with the changes to the business environment. Further, management needs to focus on processes that improve the quality of the system design stage. digital.library.unt.edu/ark:/67531/metadc2857/
Analysis of the Impact of CACREP Accreditation of Counselor Education Programs on Student Knowledge Outcomes
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The principal investigator (PI) for this study analyzed mean scores on the National Counselor Examination (NCE) of students from CACREP accredited and non- CACREP accredited programs. Data was provided by the National Board of Certified Counselors, Inc., for a total of ten examination administrations across six years. The fourteen variables examined in the study consisted of the eight common-core knowledge domains identified in CACREP standards, the five counselor work behavior areas identified by NBCC via periodic job analysis of counseling practice, and one overall or total score on the NCE. NCE mean scores of students from CACREP accredited programs were higher than NCE mean scores of students from non-CACREP accredited programs on all variables across all ten NCE administrations. Data seem to indicate that students from CACREP accredited programs perform significantly better on the NCE than students from non-CACREP accredited programs, in all fourteen variables. Sample size was large, totaling 9707, so the PI calculated effect sizes using Cohen's d for each variable to aid interpretation of statistical significance. Five variables had large effect sizes of .70 or higher. The higher effect size statistics were associated with the counselor work behavior areas, with the highest effect size (.85) associated with the overall, or total, score on the NCE. Statistically significant results in the counselor work behavior areas, in the presence of large effect size statistics, may represent reasonably good support for CACREP accredited programs' superiority in developing overall counselor clinical skills and knowledge beyond simply content knowledge. Additionally, the large effect size of the Total Score variable might be interpreted to indicate that student knowledge gained from CACREP accredited programs is superior to student knowledge gained from non-CACREP accredited programs. digital.library.unt.edu/ark:/67531/metadc2746/
Animal contribution to human medicine
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The use of animal models in research has led to a fierce debate between animal rights activists and scientists. The former claim that little useful information is gained from animal studies and the suffering of animals does not preclude any treatments which may be used to treat human illnesses. Yet, research scientists claim that in vivo animal models are of absolute necessity to developing treatments and cures to disease. To determine the necessity of animal use, one must examine the models currently in research. Have the animal models for disorders such as cystic fibrosis and muscular dystrophy given scientists enough information to develop effective treatments? This paper will examine the role of animal subjects in several disease research protocols, as well as the applicability of the research. digital.library.unt.edu/ark:/67531/metadc5821/
Anne Brontë's New Women: Agnes Grey and The Tenant of Wildfell Hall as Precursors of New Woman Fiction
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Anne Brontë's Agnes Grey and The Tenant of Wildfell Hall were published more than forty years before the appearance of the feminist type that the Victorians called the “New Woman;” yet, both novels contain characteristics of New Woman fiction. By considering how Brontë's novels foreshadow New Woman fiction, the reader of these novels can re-enact the “gentlest” Brontë as an influential feminist whose ideology informed the construction of the radical New Woman. Brontë, like the New Woman writers, incorporated autobiographical dilemmas into her fiction. By using her own experiences as a governess, Brontë constructs Agnes Grey's incongruent social status and a morally corrupt gentry and aristocracy through her depiction of not only Agnes's second employers, the Murrays, but also the morally debauched world that Helen enters upon her marriage to Arthur Huntingdon in The Tenant of Wildfell Hall. Moreover, Brontë incorporates her observations of Branwell's alcoholism and her own religious beliefs into The Tenant of Wildfell Hall. Although Brontë's novels contain autobiographical material, her heroines are fictional constructions that she uses to engage her readers with the woman question. Brontë accomplishes this engagement through her heroines' narrative re-enactments of fictional autobiographical dilemmas. Helen's diary and Agnes's diary-based narrative produce the pattern of development of the Bildungsroman and foreshadow the New Woman novelists' Kunstlerromans. Brontë's heroines anticipate the female artist as the protagonist of the New Woman Kunstlerromans. Agnes and Helen both invade the masculine domain of economic motive and are feminists who profess gender definitions that conflict with dominant Victorian ideology. Agnes questions her own femininity by internalizing the governess's status incongruence, and Helen's femininity is questioned by those around her. The paradoxical position of both heroines anticipates the debate about the nature and function of art in which the New Woman writers engaged. Through her reconciliation of the aesthetic and the political, Brontë, like the New Woman novelists who will follow, explores the contradiction between art and activism. digital.library.unt.edu/ark:/67531/metadc2834/
The Application of Hackman and Oldham's Job Characteristic Model to Perceptions Community Music School Faculty Have Towards Their Job
Hackman and Oldham's Job Characteristic Model was applied to study of perceptions community music school faculty hold towards their job. The research questions addressed core job characteristics of skill variety, task identity, task significance, autonomy, and feedback, critical psychological states (experienced meaningfulness, experienced responsibility, and knowledge of results); personal and work outcomes of satisfaction and motivation; need for professional growth. The results were compared to the national norms for nine different job families provided by Oldham, Hackman, and Stepina. Thirty-three schools, all members of the National Guild of Community Schools of the Arts, located in every geographical region of the United States, yielded 437 faculty responses (64% return rate). Of the core job characteristics, dealing with others and autonomy received the highest ratings; feedback and task significance received the lowest ratings. Of the psychological states, experienced responsibility yielded the highest rating and experienced meaningfulness yielded the lowest ratings. Of the personal/work outcomes, personal development and colleague relations received the highest ratings; pay satisfaction and overall general satisfaction received the lowest ratings. A comparison to the professional job family norms, using a one-sample ttest, found significant differences in 16 out of the 18 variables measured by the Job Characteristic Model. Strong positive feelings for growth combined with less than strong feelings for the core job dimensions yielded a low motivating potential score of 96.18. digital.library.unt.edu/ark:/67531/metadc2885/
Assessment and Comparison of the Stress Experienced by International and American Students at the University of North Texas
There were two purposes of the current study: (1) to evaluate if the East Asian Student Stress Inventory could be used to assess the stress experienced by International and American students at the University of North Texas and (2) to determine if the Inventory could discriminate between the two groups on the basis of the stress assessment. A sample of International (n=205) and American (n=216) graduate and undergraduate students completed the inventory. Results indicated that the EASSI could be generalized to a wider spectrum of International students. Using principal component factor analysis with varimax rotation, eight factors were extracted: culture shock, physiological symptoms, family pressure, test anxiety, financial difficulties, attitude toward study, social support and academic self esteem. The inventory clearly discriminated between the two groups on the subscales of culture shock, family pressure and attitude toward study and the International students scored higher on these subscales. digital.library.unt.edu/ark:/67531/metadc2801/
The Assessment of Cognitive Development and Writing Aptitude Within Learning Communities
Learning communities have emerged as an efficient and effective paradigm for improving undergraduate education, especially for entering freshmen. The academy has become increasingly interested in learning outcomes and student retention, especially as they are related to the assessment of various approaches to educating the whole student. Learning community pedagogy has developed through rigorous research. However, little is known about the impact of this pedagogy upon college students' cognitive development and writing aptitude. Cognitive development theory has been most significantly influenced by the work of William G. Perry, Jr. Though no theory exists which would address the stages of writing development in university students, many composition theorists suggest a correlation between cognitive development and writing aptitude. This study measured cognitive development and writing aptitude in learning community students and non-learning community students, matching them for SAT scores, high school grade point averages, gender, and ethnicity. The research questions of interest were: 1) How does participation in a learning community affect students' cognitive development; and 2) How does participation in a learning community affect students' writing aptitude? The participants were pre- and post-assessed for cognitive development, using the Measure of Intellectual Development (MID). Additionally, participants were preand post-assessed for writing aptitude, using a diagnostic essay and exit exam. Results of this study indicate no statistically significant differences in cognitive development and writing aptitude for learning community students and non-learning community students as measured by the Measure of Intellectual Development (MID) and the diagnostic essay and exit exam. These findings may have been influenced by the small sample size. It is suggested that this research be replicated, ensuring a larger sample size, to determine the efficacy of this pedagogy on these variable sets. digital.library.unt.edu/ark:/67531/metadc2916/
Assessment of psychopathy in incarcerated females
Psychopaths constitute only an estimated 1% of the population, yet they are responsible for a disproportionately large number of violent and nonviolent crimes. The literature addressing this syndrome among male offenders is quite extensive. In contrast, psychopathy and its underlying factor structure remains understudied among female offenders. Research has suggested marked gender differences in the prevalence, clinical characteristics, and underlying dimensions of psychopathy. This study examined the dimensions of psychopathy in a female offender sample. The Psychopathy Checklist-Revised and the Self Report Psychopathy-II (SRP-II) were administered to 119 female inmates at Tarrant County Jail in Fort Worth, TX. Confirmatory factor analyses of the Psychopathy Checklist-Revised (PCL-R) did not support the use of the traditional two factor male model or a recently proposed two- factor female model. This thesis also addressed females' self-appraisal of PCL-R Factor 1 characteristics as well as the usefulness of the self-administered Self-Report Psychopathy-II as a screen for psychopathy. digital.library.unt.edu/ark:/67531/metadc2890/
Attitudes of American and Korean early childhood educators regarding programs for gifted/talented young children.
The purpose of this research was to study the attitudes of Korean and American early childhood educators concerning gifted children and programs aimed specifically at meeting their needs. The study examined general attitudes towards giftedness and gifted education programs and factors that might affect those attitudes. The study also examined desirable environments for young gifted children. Twenty-item questionnaires were developed and logically divided into six sections (identification, teacher environment, classroom environment, parent environment, educational rights, and program). A systematic process of development, analysis, and refinement of the questionnaire was done. The questionnaires were given randomly to American educators attending the 1996 National Association for the Education of Young Children (NAEYC) conference. A random Korean sample included early childhood educators listed in the Korean Association for Early Childhood Education Directory (1995-1996) and the Korean Association for Child Care Directory (1995-1996). All subjects were members of one of three groups: (a) teacher educators, (b) teachers, and (c) administrators/directors. The surveys found agreement between Korean and American early childhood educators on the importance of knowing the strengths of individual gifted children, the need to stimulate higher order thinking skills, the rights of gifted children to an appropriate education, a perception of more work for the teacher to add these options, and a feeling that gifted programs would be difficult because of the large number of children in classes. The teachers also agreed that it is not difficult to assess or identify gifted preschoolers and having programs for the gifted is not elitist, but that parents should have the main responsibility for meeting the needs of gifted preschoolers and that many gifted strategies are good for all children. digital.library.unt.edu/ark:/67531/metadc3029/
Barriers Limiting Access to Hospice Care for Elderly African Americans in Amarillo, Texas
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This study examines barriers limiting access to hospice care for elderly African Americans. Ethnic background plays a critical role in the development of attitudes, beliefs and expectations related to death and issues surrounding hospice care. The purpose of this study was to identify barriers that may limit access to hospice care for African Americans. A questionnaire was administered to 56 elderly African Americans in three religious settings and an African American senior citizens center. The questionnaire was designed to obtain information concerning African Americans' attitudes toward death and dying; religious beliefs; health beliefs; familiarity with hospice and prospective use of hospice. The results of the study indicate a number of barriers in access to hospice care for African Americans including: hospice knowledge barriers; education/outreach barriers; cultural knowledge barriers related to death/dying values; family/social support barriers; hospice organizational/provider barriers; health care organizational/provider barriers; and reimbursement barriers. digital.library.unt.edu/ark:/67531/metadc2855/
Borel Determinacy and Metamathematics
Borel determinacy states that if G(T;X) is a game and X is Borel, then G(T;X) is determined. Proved by Martin in 1975, Borel determinacy is a theorem of ZFC set theory, and is, in fact, the best determinacy result in ZFC. However, the proof uses sets of high set theoretic type (N1 many power sets of ω). Friedman proved in 1971 that these sets are necessary by showing that the Axiom of Replacement is necessary for any proof of Borel Determinacy. To prove this, Friedman produces a model of ZC and a Borel set of Turing degrees that neither contains nor omits a cone; so by another theorem of Martin, Borel Determinacy is not a theorem of ZC. This paper contains three main sections: Martin's proof of Borel Determinacy; a simpler example of Friedman's result, namely, (in ZFC) a coanalytic set of Turing degrees that neither contains nor omits a cone; and finally, the Friedman result. digital.library.unt.edu/ark:/67531/metadc3061/
The Break-up of the Confederate Trans-Mississippi Army, 1865
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Unlike other Confederate armies at the conclusion of the Civil War, General Edmund Kirby Smith's Trans-Mississippi Army disbanded, often without orders, rather than surrender formally. Despite entreaties from military and civilian leaders to fight on, for Confederate soldiers west of the Mississippi River, the surrender of armies led by Generals Robert E. Lee and Joseph E. Johnston ended the war. After a significant decline in morale and discipline throughout the spring of 1865, soldiers of the Confederate Trans-Mississippi Department chose to break-up and return home. As compensation for months of unpaid service, soldiers seized both public and private property. Civilians joined the soldiers to create disorder that swept many Texas communities until the arrival of Federal troops in late June. digital.library.unt.edu/ark:/67531/metadc2764/
Burnout Among Student Affairs Professionals at Metropolitan Universities
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The purpose of this study was to determine the level of burnout among student affairs professionals at the 52 U.S. member institutions of the Coalition of Urban and Metropolitan Universities. Packets containing the Maslach Burnout Inventory (MBI), the Moos Work Environment Scale (WES), and a demographic survey were mailed to 371 senior student affairs administrators at the member institutions, with a completed response rate of 58.22%. The senior student affairs administrators surveyed included the chief student affairs officers and the professional staff who reported to them. The research design employed t-tests, analyses of variance, and Pearson's Product Moment correlations. The scores obtained from the MBI and WES subscales were compared overall and along 9 independent variablestitle of position, size of institution, appointment, salary, years in current position, years in profession, age, gender, and highest degree attained. Average levels of burnout were found on each of the MBI subscores. Contrary to earlier studies, women did not suffer from statistically significant higher levels of burnout than men, and burnout levels decreased with age and years in the profession for both sexes. Lower scores on the MBI depersonalization subscale were found in employees in mid-career and in professionals from smaller schools. Emotional exhaustion was not a factor. Environmental factors relating to burnout and job satisfaction were also explored. Statistically significant differences on the WES were found on all of the independent variables except the years in the current position variable. The metropolitan environment may have been effective in reducing the amount of burnout felt by this group of student affairs professionals. The study underscored the need for continuing research in burnout for student affairs professionals and for continued professional development throughout the career span. digital.library.unt.edu/ark:/67531/metadc2835/
By Air Power Alone: America's Strategic Air War in China, 1941-1945
During World War II, the Army Air Force waged three strategic air offensives in and from China against Japan. At first, the Flying Tigers and 10th Air Force constituted the whole of American aid to China, but the effort soon expanded. Supported by Chiang Kai-shek, Claire Chennault and his 14th Air Force waged an anti-shipping campaign, to which the Japanese Imperial Army responded with Operation Ichigo and against which Joseph Stilwell accurately warned. 20th Bomber Command used B-29s to wage Operation Matterhorn, failed, and later conducted PACAID missions. 14th Air Force then waged a counterproductive transportation campaign as The Pacific War, also known as the Greater East Asian War, ended. Events in the China-Burma-India and China Theaters provide lessons in logistics, targeting, training, and air-ground cooperation that are applicable in the post-Cold War era. digital.library.unt.edu/ark:/67531/metadc2800/
Career Paths of Female Chief Academic Officers in the Council for Christian Colleges and Universities
This study examined the career paths of women administrators serving as chief academic officers in Christian colleges and universities which belong to the Council for Christian Colleges and Universities (CCCU). The CCCU is a professional association of evangelical Christian institutions dedicated to integrating faith and learning. The exploration included each administrator's demographic information; her early, adolescent, college, and graduate school experiences; early vocational experiences; the effect of marriage and motherhood on her career; critical factors she identified as important in achieving her current position; and the importance of spiritual convictions or Christian faith in career decision making. Sixteen of the eighteen identified women holding the rank of chief academic officer agreed to participate in the study. The typical woman administrator was 50, married, and the mother of one or more children. She most likely had received her education in the humanities, with the terminal degree of choice being a Ph.D. She had served at her current institution for more than five years, but in her current administrative position for less than five. As an adolescent she excelled in the humanities, less so in math and science, and was involved in many extracurricular activities, including music endeavors, leadership, and her local church. She had received the most encouragement from her mother, although both parents expected her to do her best in school. For post secondary education, she had benefited from a mentor, had excelled easily, and had taken no time off between her bachelor's and master's degrees or between her master's or doctoral degrees. Although she had aspired to teach and received most of her early vocational experience in the professoriate, she had not aspired to be an administrator. As an adult, she had married in her 20's and had children before the age of 30. She had an unusually supportive spouse and believed her marriage to be a key factor in her career success. Her family and professional roles were potentially conflicted and required her to "juggle" her responsibilities. She believed the influence of her mentors, faith influences, and chairing an academic department were critical experiences that had led to her position in administration. Regarding her spiritual convictions and disciplines, she adamantly believed both affect her daily work and personal life. CCCU women administrators are deeply committed to their Christian higher education callings, highly educated, persistent, spiritually minded, and devoted to their families. digital.library.unt.edu/ark:/67531/metadc2788/
Carlo Milanuzzi's Quarto Scherzo and the Climate of Venetian Popular Music in the 1620s
Although music publishing in Italy was on the decline around the turn of the seventeenth century, Venice emerged as one of the most prolific publishing centers of secular song in Italy throughout the first three decades of the 1600s. Many Venetian song collections were printed with alfabeto, a chordal tablature designed to facilitate even the most untrained of musicians with the necessary tools for accompanying singers on the fashionable five-course Spanish guitar. Carlo Milanuzzi's Quarto Scherzo (1624) stands out among its contemporary Venetian song collections with alfabeto as an anthology of Venetian secular songs, including compositions by Miniscalchi, Berti, and Claudio and Francesco Monteverdi. Issues surrounding its publication, instrumentation, and musical and poetic style not only contribute to the understanding of Venetian Baroque monody, but also help to construe a repertory of vocal music with defining characteristics usually associated with popular music of the 19th, 20th, and 21st centuries. digital.library.unt.edu/ark:/67531/metadc2899/
Case studies in terrorism-drug connection: the Kurdistan Workers' Party, the Liberation Tigers of Tamil Eelam, and the Shining Path
This study scrutinizes the drug-terrorism nexus critically with intent to conceive possible remedies for the problem. The vast turnover of the global illicit drug industry constitutes the largest portion of organized crime enterprises' income. Different circles have argued that these enterprises are not the sole actors of the drug business, but terrorist groups, whose ultimate aim is a political change rather than financial strength, also profit from the “business.” The controversial nature of the problem fuelled heated debates and requires an in depth and impartial analysis, which was the main subject of the current study. At the first stage, three different cases, the PKK, the LTTE, and the SL, were studied either to prove or deny the alleged phenomenon. The sampled groups' ideology, structure, and operations helped understand the motives pushing the organizations into the ‘business.' Subsequently, several recommendations capturing vital issues both in countering terrorism and breaking terrorism-drugs link were spelled out. digital.library.unt.edu/ark:/67531/metadc2871/
A Case Study of Leftist Terrorism in Turkey: DHKP/C
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Change in government has characterized the development of most nations. Sometimes this change has been marked by continued evolution, in a peaceful attempt to move forward. Other times, change has been fraught with violent revolution and terrorism. This process has been the subject of much debate by political scientists and economic philosophers. Today, Turkey suffers from continued threats to its government through violent acts of terrorism conducted by various groups, expressing ideologies of leftist and rightist organizations, as well as ethnic and religious extremists. This thesis examines DHKP/C as the primary leftist revolutionary group effecting Turkey, exploring its historical background in Europe and the Middle East, as well as its philosophical link to Marxism. Further, this treatise discusses the implication of revolution and terrorism expressed by DHKP/C; and explores innovative and peaceful solutions, strategies, and techniques to be used by the police forces of Turkey in combating this group digital.library.unt.edu/ark:/67531/metadc2826/
Ceramics Without Clay: An Exploration into Potential
Investigating the behavior, function and appearance of ceramic materials has proven an enduring point of interest throughout my education. In learning about the vast range of the earth-yielded materials and their physical manifestations in states ranging from wet to dry to fired, I have found myself excited and challenged to seek out ways to expand their presentation. My attention has been repeatedly drawn to the class of ceramic materials that frequently get classified as “glaze ingredients.” Understanding the structural and visual qualities of these minerals and compounds was an interest whether I was making tableware, tiles, or sculpture. For the purposes of this paper, I propose to deal expressly with the physical art-making considerations of material and process as they relate to my work in ceramics. By directing my focus as such, I hope to center my work on a concern that became evident to the art world upon the display of Marcel Duchamp’s Fountain: material equals content. digital.library.unt.edu/ark:/67531/metadc5817/
The Changing Face of Ralph Lauren's Advertising: A New Lifestyle Image and Increased Nudity
Advertising, which is an important sales tool for brands to the masses, may produce lasting impressions of a company and its products. These impressions rely on a consistent message over time to maintain a brand's image. This study examines how Ralph Lauren's advertising images have changed from a country club lifestyle image to urban/hip. In addition, the study examines the increased use of nudity and sexual imagery in Lauren's advertising. The findings were obtained by content analyzing all Ralph Lauren advertisements appearing in Gentlemen's Quarterly magazine from 1980 to 2000 (N=283). The study finds that Ralph Lauren lifestyle images have become more urban/hip, and that Lauren's advertising is utilizing more nudity, sexual interaction, and homoerotic imagery. By examining Ralph Lauren's shifting brand image via its advertising, this study contributes to a greater understanding of the connection between advertising and a company's brand image. digital.library.unt.edu/ark:/67531/metadc2887/
The characteristics of teacher-directed modeling evidenced in the practices of three experienced high school choral directors.
The purpose of this study was to analyze the characteristics of teacher directed modeling evidenced in the practices of three experienced high school choral directors. Research questions were: 1. What modeling activities were exhibited in each teacher's rehearsals? 2. When viewing a 45-minute composite tape of each teacher's instructional activities representative of all rehearsals, what instructional behaviors did each choral director recognize and identify as modeling? 3. What instructional episodes on the composite tape not identified by the teachers contained elements of modeling? 4. What other episodes from the remainder of each choral director's rehearsal practice contributed to an understanding of modeling? Videotapes of three high school choral directors were recorded over the course of one semester. Excerpts from rehearsals were combined to form a 45-minute composite tape of each choral director. A text transcription was made of the composite tape. Participant directors viewed their tape and identified instructional episodes that they recognized as examples of modeling. Identifications were analyzed, and descriptive categories of modeling behaviors were established. Modeling was found to be a teacher generated or delegated act of demonstration. Demonstrations were musical or non-musical and belonging to either of three distinct categories: audible, visible, or process modeling. Subdivisions of each category were found further describing modeling in the high school choral rehearsal. In addition, types of modeling were noted in increasing cognitive complexity required on the part of students beginning with simple imitation and concluding with models as tools for musical problem solving. Research is recommended on a larger sample of participants, including junior high/middle school directors to confirm categories and levels and to develop an observation tool based on results for describing, assessing, and modifying instructional techniques of practicing and pre-service music educators. digital.library.unt.edu/ark:/67531/metadc3053/
Characterization of Moraxella bovis Aspartate Transcarbamoylase
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Aspartate transcarbamoylase (ATCase) catalyzes the first committed step in the pyrimidine biosynthetic pathway. Bacterial ATCases have been divided into three classes, class A, B, and C, based on their molecular weight, holoenzyme architecture, and enzyme kinetics. Moraxella bovis is a fastidious organism, the etiologic agent of infectious bovine keratoconjunctivitis (IBK). The M. bovis ATCase was purified and characterized for the first time. It is a class A enzyme with a molecular mass of 480 to 520 kDa. It has a pH optimum of 9.5 and is stable at high temperatures. The ATCase holoenzyme is inhibited by CTP > ATP > UTP. The Km for aspartate is 1.8 mM and the Vmax 1.04 µmol per min, where the Km for carbamoylphosphate is 1.05 mM and the Vmax 1.74 µmol per min. digital.library.unt.edu/ark:/67531/metadc3012/
Characterization of the aspartate transcarbamoylase (ATC2) that is found in the pyrBC’ complex of Bordetella pertussis
An aspartate transcarbamoylase (ATCase) gene from Bordetella pertussis was amplified by PCR and ligated into pT-ADV for expression in Escherichia coli. This particular ATCase (pyrB) was an inactive gene found adjacent to an inactive dihydroorotase (DHOase) gene (pyrC'). This experiment was undertaken to determine whether this pyrB gene was capable of expression alone or if it was capable of expression only when cotransformed with a functional pyrC'. When transformed into E. coli TB2 pyrB-, the gene did not produce any ATCase activity. The gene was then co-transformed into E. coli TB2 pyrB- along with a plasmid containing the pyrC' gene from Pseudomonas aeruginosa and assayed for ATCase activity. Negative results were again recorded. digital.library.unt.edu/ark:/67531/metadc3057/
Characterizaton of Triethoxyfluorosilane and Tetraethoxysilane Based Aerogels
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Aerogels are highly porous, low dielectric constant (low k) materials being considered by the semiconductor industry as an interlayer dielectric. Low k materials are needed to overcome capacitance problems that limit device feature sizes. Precursors triethoxyfluorosilane (TEFS) and tetraethoxysilane (TEOS) were used to prepare bulk aerogels. Samples were prepared by sol-gel methods, and then carbon dioxide supercritically-dried. Effects of varying the water to precursor ratio were studied with respect to aerogel properties and microstructure. Methods of analysis for this study include FTIR-ATR, TEM, RBS, EDS, SEM, dielectric constant determination by impedance and surface area by gas adsorption. Si-F bonds were determined to be present in both acid- and base-catalyzed TEFS as well as HF-catalyzed TEOS. Fluorine promotes a fractal network microstructure as opposed to a particle-like microstructure. Surface area and dielectric constant were determined to increase slightly with increases in the water to precursor ratio. digital.library.unt.edu/ark:/67531/metadc2999/
Choice for All? Charter Schools and Students with Disabilities
In order to assess the extent and quality of special education services in charter schools in north Texas, the researcher examined data submitted to Texa Public Education Information Management System (PEIMS), and conducted qualitative interviews with selected charter school administrators. Five cornerstones of the Individuals with Disabilities Education Act (IDEA): zero reject, individualized education program (IEP), appropriate assessment, free appropriate public education (FAPE), and least restrictive environment (LRE), were utilized in the assessment of quality. Levels of expertise in federal disability law and fiscal barriers were explored, as well. digital.library.unt.edu/ark:/67531/metadc2905/
Christian Higher Education at Dallas Theological Seminary: An Assessment of Doctor of Ministry Programs
This study involved non-experimental research to identify alumni perceptions of the strengths and weaknesses of the Doctor of Ministry degree program at Dallas Theological Seminary. An international survey was conducted to collect data from 165 Doctor of Ministry degree holders from Dallas Theological Seminary; 131 usable questionnaires were returned. A response rate of 79.4 percent was achieved. The intent of the study was to ascertain (a) the extent to which D.Min. alumni perceive that the objectives and goals of Doctor of Ministry programs at Dallas Theological Seminary are being met, (b) alumni-perceived strengths of Doctor of Ministry programs at Dallas Theological Seminary, (c) alumni-perceived weaknesses of Doctor of Ministry programs at Dallas Theological Seminary, (d) compare the findings of this case study assessment with a 1987 national study of Doctor of Ministry programs, and (e) make recommendations for the improvement of D. Min programs at Dallas Theological Seminary. The pattern that emerged from the data indicates that the D.Min. alumni believe objectives and goals of the Doctor of Ministry program at Dallas Theological Seminary are being met. In the opinion of the alumni, Doctor of Ministry programs at Dallas Theological Seminary has its strengths. The overall opinion of the D.Min. faculty and curriculum are strong indicators of its strength. The D.Min. program has had a positive impact on the lives of its alumni and on their ministries. In the opinion of the alumni, Doctor of Ministry programs at Dallas Theological Seminary also has its weaknesses. A casual comparison of the findings of this case study assessment with a similar 1987 national study of Doctor of Ministry programs revealed more similarities than differences. The alumni provided a number of suggestions to be implemented into the Doctor of Ministry curriculum, structure, faculty, administration, overall image of the program, its purpose and objectives. digital.library.unt.edu/ark:/67531/metadc2914/
A Collapsing Result Using the Axiom of Determinancy and the Theory of Possible Cofinalities
Assuming the axiom of determinacy, we give a new proof of the strong partition relation on ω1. Further, we present a streamlined proof that J<λ+(a) (the ideal of sets which force cof Π α < λ) is generated from J<λ+(a) by adding a singleton. Combining these results with a polarized partition relation on ω1 digital.library.unt.edu/ark:/67531/metadc2789/
Combat Reconsidered: A Statistical Analysis of Small-Unit Actions During the American Civil War
Historians often emphasize the physical features of battleterrain, weaponry, troop formations, earthworks, etc.in assessments of Civil War combat. Most scholars agree that these external combat conditions strongly influenced battle performance. Other historians accentuate the ways in which the mental stresses of soldiering affected combat performance. These scholars tend to agree that fighting effectiveness was influenced by such non-physical combat conditions as unit cohesion, leadership, morale, and emotional stress. Few authors argue that combat's mental influences were more significant in determining success or failure than the physical features of the battlefield. Statistical analysis of the 465 tactical engagements fought by twenty-seven Federal regiments in the First Division of the Army of the Potomac's Second Corps throughout the American Civil War suggests that the mental aspects of battle affected fighting efficiency at least as muchand probably more thancombat's physical characteristics. In other words, the soldiers' attitudes, opinions, and emotions had a somewhat stronger impact on combat performance than their actions, positions, and weaponry. digital.library.unt.edu/ark:/67531/metadc3066/
Communication Assistance for Law Enforcement Act of 1994: A Case Study
The purpose of this study is: to explore and analyze the Communication Assistance for Law Enforcement Act of 1994 (CALEA), to identify problems related to CALEA, to identify solutions devised by other countries to overcome problems similar to CALEA's, and to propose feasible solutions to CALEA problems. digital.library.unt.edu/ark:/67531/metadc2877/
A comparative analysis of the effectiveness of three different GED preparation programs
The purpose of this study was to identify effective instructional programs for GED tests preparation for students in a large suburban school district. Three different nonrandom, unequal naturally occurring instructional groups at three different locations were examined. One group participated in a traditional instruction program, a second group in a test/retest program, and a third group in a computer-assisted program. The demographics of the district population, the GED population, and the individual study groups were catalogued and analyzed. The demographics of the GED population were similar to the district population but different from the GED passers. Student characteristics did affect GED success. Both quantitative and qualitative data were gathered. Random students in each of the three groups were interviewed about their experiences in GED preparation using a questionnaire. Quantitative data were analyzed using frequencies, means, correlations, and a multiple regression analysis. Since the GED credential is an alternative to the high school diploma, its use as a dropout alternative is important to every school district. The study found that instructional methods had little impact on students' success in receiving the GED credential. The overall success rate of students was low in each group. The student's reading achievement score, GPA, and IQ score were predictors of GED tests success. Little research has been done in the area of GED instruction; perhaps this lack of work is due to the known limited effectiveness of GED preparation. Districts hoping to build effective GED programs should screen students prior to admission to a GED program. High school GED instruction seems to be effective for students likely to be successful in the regular school setting but in need of an immediate credential because of pregnancy or parenting or the need to work full-time or the desire to begin college study. Districts should also design programs to help disenfranchised students in the regular program remain in school. digital.library.unt.edu/ark:/67531/metadc2805/
A comparative analysis of traditional versus block and accelerated block scheduled high schools over an eight-year period in a large urban school district
This study compared traditional, A/B and accelerated block scheduling and its effects on student achievement and attendance by comparing the differences in student outcomes observed before and after the adoption of block/accelerated block schedules. The independent variable was the use of time in a block-scheduling model. The dependent variables were student outcomes measured by nine indicators based on the Academic Excellence Indicator System in Texas: student attendance, graduation rate, dropout rate, percentage of students taking advanced courses, percentage of students passing all Exit-level Texas Assessment of Academic Skills tests, percentage of students taking College Admissions Tests, mean SAT total score of those students who took the SAT, mean ACT total score of those students who took the ACT, and percentage of students who are at or above criterion on the SAT or ACT of those students taking the SAT or ACT. Data from archival files from the Texas Education Agency's Academic Excellence Indicator System for each respective year of the eight-year longitudinal study was collected. Scheduling models (traditional, alternating block and accelerated block) were investigated. The sample was drawn from the student population of a large urban school district in north central Texas, a district serving approximately 77,000 students. The district has twelve regular high schools serving students in grades nine through twelve. All twelve regular high schools were included in this study. The indicators were analyzed using SPSS multivariate and univariate analysis to compare the means, regression line slopes, and regression line intercepts for each type of schedule: traditional only, traditional prior to A/B block change, traditional prior to accelerated block change, A/B block, and accelerated block. The regression line, slopes, and intercepts were based on separate regression analysis where a school year was used to predict the AEIS indicators for each type of schedule. With the exception of graduation rate, significant difference was found for all dependent variables. digital.library.unt.edu/ark:/67531/metadc2883/
Comparative morphology of sensilla styloconica on the proboscis of North American Nymphalidae and other selected taxa (Lepidoptera): systematic and ecological considerations.
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Sensilla styloconica on the proboscis of 107 species of North American and tropical butterflies were comparatively studied using the scanning electron microscope. Focus was on 76 species of North American Nymphalidae representing 45 genera and 11 subfamilies. Nomenclature for generalized and specific types of nymphalid sensilla is proposed. Written descriptions and micrographs are presented for each species studied. Morphological features were generally consistent for all or most species within genera and sometimes within subfamilies, with specified exceptions. Statistical analysis revealed significant differences for six of eight variables tested between two distinct feeding guilds of North American Nymphalidae. Average number, density, extent of proboscis coverage with sensilla, their total length, and shoulder spine length were all significantly greater in the non-nectar feeding guild than in nectar feeders, and may indicate adaptation for greater efficiency in feeding on flat surfaces. The greater frequency of apical shoulder spines in non-nectar feeders may represent adaptation for protection of sensory pegs from mechanical abrasion during feeding, or for anchoring the flexible proboscis tip to the surface. Correlation analysis revealed 9 out of 28 positive correlations in nectar feeders and 5 out of 28 in non-nectar feeders. Results of preliminary cladistic analysis were not considered to be meaningfully robust due to few available characters. The stylar characters identified in this study should be more useful in future analyses when included with characters from other lines of evidence. The presence of sensilla styloconica in all subfamilies of Nymphalidae, except Danainae, largely supports Ehrlich's (1958) higher classification concept for the family. The presence of less conspicuous sensilla in the Danainae, and other characteristics are presented as further evidence that they should be reconsidered for full family status. Sensilla styloconica in nymphalid butterflies appear to function as extensions that provide greater sensory reach during feeding. The role of these sensilla in liquid uptake, pollen feeding, and host plant selection is discussed. digital.library.unt.edu/ark:/67531/metadc3002/
A comparison of five robust regression methods with ordinary least squares: relative efficiency, bias and test of the null hypothesis
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A Monte Carlo simulation was used to generate data for a comparison of five robust regression estimation methods with ordinary least squares (OLS) under 36 different outlier data configurations. Two of the robust estimators, Least Absolute Value (LAV) estimation and MM estimation, are commercially available. Three authormodified variations on MM were also included (MM1, MM2, and MM3). Design parameters that were varied include sample size (n=60 and n=180), number of independent predictor variables (2, 3 and 6), outlier density (0%, 5% and 15%) and outlier location (2x,2y s, 8x8y s, 4x,8y s and 8x,4y s). Criteria on which the regression methods were measured are relative efficiency, bias and a test of the null hypothesis. Results indicated that MM2 was the best performing robust estimator on relative efficiency. The best performing estimator on bias was MM1. The best performing regression method on the test of the null hypothesis was MM2. Overall, the MM-type robust regression methods outperformed OLS and LAV on relative efficiency, bias, and the test of the null hypothesis. digital.library.unt.edu/ark:/67531/metadc5808/
Comparison of GPS Point Selection Methods for GIS Area Measurement of Small Jurisdictional Wetlands
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U.S. Army Corps of Engineers (USACE) regulates fill of jurisdictional waters of the United States including wetlands. Recent USACE regulations set a threshold of impacts to wetlands at one-half acre. Impact area can be determined by Global Positioning System (GPS) measurement of wetland boundary and Geographic Information System (GIS) calculation of impact area. GPS point selection methods include (1) equal time interval, (2) transect and (3) intuition. Four two-acre shapes were measured with each GPS method and brought into GIS for area calculation. Analysis of variance and Root Mean Square Error analyses determine that the transect method is an inferior point selection method in terms of accuracy and efficiency. digital.library.unt.edu/ark:/67531/metadc2831/
A Comparison of Quantitative Skills in Texas Year-round Schools with Texas Traditional Calendar Schools
This study analyzed the academic impact of year-round calendar schools as compared with the academic achievement of traditional calendar schools. The population studied was the 1998 public elementary schools in Texas. The academic impact was based upon the 1998 Texas Assessment of Academic Skills (TAAS) test administrated by the Texas Education Agency. The two groups of schools studied were Texas elementary schools that were on a year-round calendar schedule, and the Texas elementary schools on a traditional calendar schedule. Multiple regression statistics were used, in addition to means, and differences between the means of variables. Year-round schools (YRE), when compared to the means of traditional schools, have means lower in math scores (6.16 percent) than traditional schools. Year-round schools have fewer African Americans students (2.78%), White students (21.06%), and special education students (.25%). Year-round schools are higher in population size (72.72students), Economic Disadvantaged students (15.87%), Hispanic students (23.46%), and Mobility (3.23%). digital.library.unt.edu/ark:/67531/metadc2810/
Condom Use Among College Students
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With the spread of the Human Immuno-Deficiency Virus and sexually transmitted diseases, it is extremely important for sexually active individuals to protect themselves properly if they decide to engage in sexual intercourse. Knowledge of HIV and the Acquired Immune Deficiency Syndrome has been associated with safer sexual practices, but knowledge alone does not totally explain risky sexual practices. This study examined how 154 college students' knowledge of HIV/AIDS, relationship status, perceptions of condom use, and perceptions of personal risk affect condom use during sexual intercourse. The impact of trust and love justifications along with the approval of peers were also examined. Perceptions of condom use and perceptions of personal risk were compared by gender and ethnicity; how perception of personal risk is related to condom use and condom use intentions was also examined. Condom use intention was found to be a significant predictor of condom use, and a significant difference of means for condom use intentions was reported between individuals who used condoms during their last experience with sexual intercourse and those who did not use condoms during their last sexual experience digital.library.unt.edu/ark:/67531/metadc2852/
Constructed images: The influences of news organizations and socialization in photojournalism
Media sociologists have produced much research on the systems of production of media content. Photojournalism, however, largely has been ignored in these studies. This paper presents the findings of an ethnographic study of work routines and photojournalism practices at three newspapers. The study explored the extent to which routines and practices are affected by professional norms and values and organizational needs and beliefs. The study also explored how these factors influence the content and aesthetic qualities of newspaper photographs. Findings suggest that photo editors and photojournalists operate under many of the same constraints as other media workers. The findings also show that photojournalists are socialized to newspapers. expectations by fellow photographers and photo editors. To gauge professional accomplishments, photojournalists rely on peers, professional organizations and competitions. digital.library.unt.edu/ark:/67531/metadc3064/
Coping Styles, Quality of Life, and Sexual Trauma in Women Veterans
The purpose of the following study was to evaluate sexual trauma and the effects on women veteran's quality of life ratings and current and past coping strategies. Participants were screened for sexual trauma history and divided into five mutually exclusive categories: 1)childhood sexual trauma, 2)civilian adult sexual trauma, 3)military sexual trauma, 4)multiple sexual trauma, and 5)no sexual trauma. Results of the study were mixed, retaining some hypotheses and rejecting others. Results regarding differences in QOL for the sexual trauma groups were rejected, as none of the QOL analyses were significant. Issues of small effect size for the QOL measure and low power to detect differences are discussed as limitations in the current study. Several significant findings were detected in the coping analyses. As predicted, the no trauma group was found to use significantly more approach coping strategies than the sexual trauma group for the past problem. Additionally, the sexual trauma group used significantly more avoidant coping techniques for past problem than the no trauma group. No between group differences were detected for sexual trauma type, however, several significant differences emerged in the comparisons of the multiple sexual trauma and military sexual trauma group's past coping compared to the no sexual trauma group's coping strategies. For past coping, the no trauma group used more approach strategies than the military or multiple trauma group. Past and current significant CRI subscale differences were also detected. Results regarding the relationship between QOL and CRI were rejected, as the two scales were not found to correlate significantly. Trauma history and avoidant coping were also nonsignificant predictors for General Life Satisfaction on the QOL measure. Additional exploratory analyses are presented as well as implications for research, theory and clinical practice. digital.library.unt.edu/ark:/67531/metadc2858/
The Correctional Orientation of Juvenile Facility Directors
Over the last 30 years, the juvenile justice system and juvenile correctional ideology shifted to become more punitive in nature. However, studies examining this shift are lacking in the literature. The present study will attempt to assess what correctional ideology, rehabilitative or punitive, is dominant within juvenile corrections by conducting a national survey to juvenile facility directors. This study will be based on prior literature, most of which has focused upon line staff in an adult correctional setting. From this prior literature, more specifically from the work of Cullen et al. (1989), scales will be created to determine the correctional orientation of the key administrators in juvenile facilities. This will allow us to assess whether the correctional ideology driving the juvenile system has in fact become punitive. The findings from this study have the opportunity to alter the current status quo in juvenile corrections. digital.library.unt.edu/ark:/67531/metadc2865/
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