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Linearity and monotonicity of a 10-bit, 125 MHz, segmented current steering digital to analog converter
The purpose of this research is to determine the linearity and monotonicity of the THS5651IDW digital to analog converter (DAC), a prototype of the future Texas Instruments TLV5651, 10-bit, 125 MHz communication DAC. Testing was conducted at the Texas Instruments facility on Forest Lane, Dallas, Texas. Texas Instruments provided test equipment, software and laboratory space to obtain test data. Analysis of the data found the DAC to be monotonic since the magnitude of the differential nonlinearity (DNL) was less than ± 1 least significant bit (LSB) and the integral nonlinearity (INL) was less than ± 0.5 LSB. The study also showed that the DAC has primarily negative DNL although the DNL is well within the desired specification. digital.library.unt.edu/ark:/67531/metadc2541/
Lining Up
A creative, multi-genre collection that includes three personal essays (non-fiction) and two short stories (fiction). The pieces in this collection primarily focus on the themes of loneliness and waiting. It includes pieces dealing with homosexual relationships, friendships and heterosexual relationships. Collection includes the essays "The Line," "Why We Don't Talk about Christmas," and "Boys Who Kiss Back," and includes the short stories "I Am Allowed to Say Faggot" and "Dear Boy." digital.library.unt.edu/ark:/67531/metadc3683/
Linkage of a nitrilase-containing Nit1C gene cluster to cyanide utilization in Pseudomonas fluorescens NCIMB 11764.
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Pseudomonas fluorescens NCIMB 11764 (Pf11764) is uniquely able to grow on the poison cyanide as its sole nitrogen source. It does so by converting cyanide oxidatively to carbon dioxide and ammonia, the latter being assimilated into cellular molecules. This requires a complex enzymatic machinery that includes nitrilase and oxygenase enzymes the nature of which are not well understood. In the course of a proteomics analysis aimed at achieving a better understanding of the proteins that may be required for cyanide degradation by Pf11764, an unknown protein of 17.8 kDa was detected in cells exposed to cyanide. Analysis of this protein by ESI-coupled mass spectrometry and bioinformatics searches gave evidence of strong homology with a protein (Hyp1) of unknown function (hypothetical) present in the bacterium Photorhabdus luminescens subsp. laumondii TTO1 (locus plu_1232). A search of available microbial genomes revealed a number of Hyp1 orthologs the genes of which are found in a conserved gene cluster known as Nit1C. Independent studies revealed that in addition to Hyp1, Pf11764 possesses a gene (nit) specifying a nitrilase enzyme whose closest homologue is a nitrilase found in Nit1C gene clusters (77% amino acid identity). DNA sequence analysis has further revealed that indeed, hyp1Pf11764 and nitPf11764 are contained in a cluster that includes also a gene specifying an oxygenase. Given the possible connection of Nit1C-endoded nitrilase and oxygenase enzymes to enzymatic cyanide degradation, there is strong reason for thinking that the genes specifying these enzymes contribute to bacterial growth on cyanide in those bacteria containing the Nit1C cluster. Because the biological function of the Hyp1 protein is currently unknown, it was cloned and the protein expressed in E. coli so that its properties could further be explored. Unfortunately, the expression of the protein in an insoluble form complicated these analyses. However, at least two lines of evidence suggest a possible role as a regulator of gene expression. First, over-expression of the protein was accompanied by the parallel elevation of the putative vector-encoded b-lactamase, implying that Hyp1Pf11764 can affect the expression of other genes. Second, a comparison of the amino acid sequence of select peptide fragments of Hyp1Pf11764, by conducting searches for homology with proteins in the existing nonredundant protein database, consistently revealed motifs in common with those present in bacterial response regulators that are part of two-component signal transduction systems widely distributed in bacteria. digital.library.unt.edu/ark:/67531/metadc10993/
Linkage of Business and Manufacturing Strategies as a Determinant of Enterprise Performance: an Empirical Study in the Textile Industry
The main question in this study was: do business units that exhibit a "linkage" or "fit" between their business strategy and manufacturing strategy variables, outperform competitors who lack such a fit? This exploratory research focused on two business strategies: cost leadership and differentiation. Based on existing literature, twenty-four hypotheses concerning the relationship between business strategy and selected manufacturing strategy variables were developed. The manufacturing executives of eighty-eight broadwoven cotton fabric mills (SIC 2211) were surveyed using a qualitative questionnaire. Two sets of comparisons were made between the manufacturing strategy variables of the sampled firms: first, high vs. low performers pursuing cost leadership strategy; and second, high vs. low performers focusing on differentiation strategy. Within each set of comparisons, high performers reported linkage between their business strategies and selected manufacturing strategy variables. This study re-affirms the importance of linking business strategy with manufacturing strategy variables as a forceful weapon for overcoming competition. digital.library.unt.edu/ark:/67531/metadc278687/
Linkages between the Texas Supreme Court and Public Opinion
This investigation sought to identify linkages between the Texas Supreme Court and public opinion through 1) a matching of written decisions with scientifically conducted public opinion polls; 2) direct mention of public opinion and its synonyms in Texas justices' decisions; 3) comparison of these mentions over time; and 4) comparison of 10 personal attributes of justices with matched decisions. The study moved the unit of analysis from the U.S. Supreme Court to the state court level by using classification schemes and attribute models previously applied to the U.S. Supreme Court. It determined that linkages exist between the Texas Supreme Court's written decisions and public opinion from 1978 to July 1994. digital.library.unt.edu/ark:/67531/metadc278024/
Links among perceived service quality, patient satisfaction and behavioral intentions in the urgent care industry: Empirical evidence from college students.
Patient perceptions of health care quality are critical to a health care service provider's long-term success because of the significant influence perceptions have on customer satisfaction and consequently organization financial performance. Patient satisfaction affects not only the outcome of the health care process such as patient compliance with physician advice and treatment, but also patient retention and favorable word-of-mouth. Accordingly, it is a critical strategy for health care organizations to provide quality service and address patient satisfaction. The urgent care (UC) industry is an integral part of the health care system in the United States that has been experiencing a rapid growth. UC provides a wide range of medical services for a large group of patients and now serves an increasing population. UC is becoming popular because of the convenient locations, extended hours, walk-in policy, short waiting times, and accessibility. A closer examination of the current health care research, however, indicates that there is a paucity of research on urgent care providers. Confronted with the emergence of the urgent care industry and the increasing demand for urgent care, it is necessary to understand how patients perceive urgent care providers and what influences patient satisfaction and retention. This dissertation addresses four areas relevant to the above mentioned issues: (1) development of an instrument to measure perceived service quality in the urgent care industry; (2) identification of the determinants of patient satisfaction and behavioral intentions; (3) empirical examination of the relationships among perceived service quality, patient satisfaction and behavioral intentions; and (4) comparison of the perceived service quality across several primary urgent care providers, such as urgent care centers, hospital emergency departments, and primary care physicians' offices. To validate this new instrument and examine the hypothesized relationships proposed in this study, an electronic web based survey was designed and administered to college students. Both exploratory and confirmatory factor analysis were employed to assess the reliability and validity of the developed instrument. The contextualized relationships were evaluated using structural equation modeling. The results of this research could potentially contribute to urgent care management and quality improvement. digital.library.unt.edu/ark:/67531/metadc11014/
Lipids and Phospholipase Activity of Vibrio Cholerae
One purpose of this investigation is to determine the fatty acid and lipid content of typical Vibrio cholerae cells. The comparison of cholera lipid constituents with those of closely-related bacteria might be of taxonomic value. Furthermore, chemical characterization of the cholera vibrio could provide useful criteria for identification of these disease-producing microorganisms. digital.library.unt.edu/ark:/67531/metadc279194/
Lipodystrophy, Body Image and Depression in Hiv Positive Black Women
Human immunodeficiency virus (HIV) seropositive men on highly active antiretroviral therapy treatment (HAART) who experience lipodystrophy syndrome (LD), a side effect of HAART, rate themselves as more depressed than those who did not experience LD(Crane et al., 2008). Furthermore, men who rated their LD symptoms as more severe also scored higher on depression measures than men who experienced less severe symptoms. It is unknown these findings can be generalized to other groups of HIV positive individuals. The current study seeks to fill this gap in the literature by exploring the associations between LD, body image, and depressive symptoms in an archival sample of HIV positive Black women. This study aims to describe the body changes associated with HAART in a Black female sample and explore the relationships between LD, body image, depression, and quality of life. Findings supported past research indicating a correlation between depression and poor body image but did not indicate that body image quality of life moderated the relationship between perceived body changes and depression. Results expanded on the literature by indicating that perceived body changes may be more distressing to Black women with HIV than objective changes. Lastly, findings suggested that Black women may have inaccurate perceptions of their own body changes. These findings are particularly informative for healthcare workers who treat HIV+ women. It is imperative that they consider clients’ self-report as well as clinical symptoms. digital.library.unt.edu/ark:/67531/metadc500152/
Liquid Nitrogen Propulsion Systems for Automotive Applications: Calculation of Mechanical Efficiency of a Dual, Double-acting Piston Propulsion System
A dual, double-acting propulsion system is analyzed to determine how efficiently it can convert the potential energy available from liquid nitrogen into useful work. The two double-acting pistons (high- and low-pressure) were analyzed by using a Matlab-Simulink computer simulation to determine their respective mechanical efficiencies. The flow circuit for the entire system was analyzed by using flow circuit analysis software to determine pressure losses throughout the system at the required mass flow rates. The results of the piston simulation indicate that the two pistons analyzed are very efficient at transferring energy into useful work. The flow circuit analysis shows that the system can adequately maintain the mass flow rate requirements of the pistons but also identifies components that have a significant impact on the performance of the system. The results of the analysis indicate that the nitrogen propulsion system meets the intended goals of its designers. digital.library.unt.edu/ark:/67531/metadc6070/
El Lirismo Indigena en las Novelas de Jose Maria Arguedas
The purpose of this thesis is to show that an indigenous, emotional, and poetic lyricism is found in the novels of Jose Maria Arguedas, which distinguishes and separates Arguedas from the Hispanic indigenous classical writers. digital.library.unt.edu/ark:/67531/metadc164040/
The List
The List is a collection of short stories focusing on the inability to adapt, or learn from self-destructive patterns, and the bizarre ways people reach out for one another when they don't know what else to do. digital.library.unt.edu/ark:/67531/metadc12171/
Listening to the Freshman Voice: First-year Self-efficacy and College Expectations Based on High School Types
This quantitative study used Astin's I-E-O theory to explore the relationship between a college freshman's high school background and academic self-efficacy. The Beginning College Survey of Student Engagement was used to measure academic self-efficacy across four types of high schools. Student gender and precollege experiences (dual-credit and communication assertiveness) were used as control. A total of 15,400 first-year students were included in this study. An ANOVA was used to examine the differences between groups, and ordinary least-square analysis was used to study the factors that affect academic self-efficacy. Results showed statistically significant difference in academic self-efficacy between public and private religious high school graduates. Specifically, graduates of public high schools had statistically higher academic self-efficacy than graduates of private religious high schools (p < .001). Additionally, females and participants of dual-credit courses also tended to have higher academic self-efficacy. Finally, analysis revealed that a first-year student's communication confidence is highly correlated to their academic self-efficacy. Results confirm in-coming first-year students perceive higher education engagement differently based on traits attributed to their precollege experiences. Results point to criteria colleges may be able to use in identifying freshmen at risk for low academic self-efficacy and, therefore, for problems in retention and degree completion. digital.library.unt.edu/ark:/67531/metadc271863/
Literary and Realistic Influences upon the Women of the Spectator
This study will outline the two great literary genres of character-writing and satire, upon the tradition and practice of which Joseph Addison and Richard Steele based their characters of women in the Spectator. The three-fold purpose of this study is to determine how the Spectator was influenced by, and what it in turn contributed to, the two literary genres, the "Character" of women and satire on women; and to present the social status of the female audience as it existed and as the Spectator sought to improve it. digital.library.unt.edu/ark:/67531/metadc130294/
The Literary Criticism of H. L. Mencken
The thesis of this paper is that Mencken was a better critic than he is credited with being, that he was unusually discerning in his judgment of the fiction of his time, and that his criteria are clearly stated in various of his writings. It is conceded, however, that his taste in poetry was limited and that his contribution to dramatic criticism was not? greatly significant. digital.library.unt.edu/ark:/67531/metadc131345/
The Literary Theory of Ayn Rand
The author believes that Ayn Rand presents a systematic approach to aesthetics and that her work presents an interesting and significant approach to aesthetic problems. The author will attempt to present Ayn Rand's basic aesthetic concepts that throw light on her literary theory. The author will also present her views on literary schools and of individual authors. digital.library.unt.edu/ark:/67531/metadc131049/
Literature in the Age of Science: Technology and Scientists in the Mid-Twentieth Century Works of Isaac Asimov, John Barth, Arthur C. Clarke, Thomas Pynchon, and Kurt Vonnegut
This study explores the depictions of technology and scientists in the literature of five writers during the 1960s. Scientists and technology associated with nuclear, computer, and space science are examined, focusing on their respective treatments by the following writers: John Barth, Kurt Vonnegut, Thomas Pynchon, Isaac Asimov, and Arthur C. Clarke. Despite the close connections between the abovementioned sciences, space science is largely spared from negative critiques during the sixties. Through an analysis of Barth's Giles Goat-boy, Vonnegut's Cat's Cradle, Pynchon's The Crying of Lot 49, Asimov's short stories "Key Item," "The Last Question," "The Machine That Won the War," "My Son, the Physicist," and Clarke's 2001: A Space Odyssey, it is argued that altruistic goals of space science during the 1960s protect it from the satirical treatments that surround the other sciences. digital.library.unt.edu/ark:/67531/metadc30511/
Little Deviants
Most of my childhood was spent in either the expansive suburbs of north Texas or on a farm in southern Oklahoma. The experience of growing up in these two regions has done much to shape my sense of aesthetic. From these early experiences, I have developed two completely divergent ideas of beauty which I've tried to reconcile in my artwork. The first influence is that of sparseness, simplicity and the commonplace. This influence comes from the emptiness of the suburban landscape, the sameness of its architecture and the need to find beauty in mundane things as a simple cure for boredom. The second major idea is centered around peculiarity, chaotic complexity and irrationality. This interest originally stems from early memories of my grandfather, whose experiences in Oklahoma during the Great Depression gave him the obsessive habit of never discarding anything for fear that he might need it some day. The complexity in meaning that comes from unfamiliar combinations has allowed the ideas in my work a kind of ambiguity that frees it from any singular reading. I think the content of my work could best be described as constructions of memories, experiences and influences. I never speak about any one thing in particular, I try to simply suggest a number of juxtaposed ideas and let their interaction be the content of my work. digital.library.unt.edu/ark:/67531/metadc5843/
Little Rock Crisis
This thesis explores the events and repercussions surrounding the desegregation of schools in Arkansas, including an analysis of the Little Rock incident. digital.library.unt.edu/ark:/67531/metadc130622/
The Little Weird: Self and Consciousness in Contemporary, Small-press, Speculative Fiction
This dissertation explores how contemporary, small-press, speculative fiction deviates from other genres in depicting the processes of consciousness in narrative. I study how the confluence of contemporary cognitive theory and experimental, small-press, speculative fiction has produced a new narrative mode, one wherein literature portrays not the product of consciousness but its process instead. Unlike authors who worked previously in the stream-of-consciousness or interior monologue modes, writers in this new narrative mode (which this dissertation refers to as "the little weird") use the techniques of recursion, narratological anachrony, and Ulric Neisser's "ecological self" to avoid the constraints of textual linearity that have historically prevented other literary modes from accurately portraying the operations of "self." Extrapolating from Mieke Bal's seminal theory of narratology; Tzvetan Todorov's theory of the fantastic; Daniel C. Dennett's theories of consciousness; and the works of Darko Suvin, Robert Scholes, Jean Baudrillard, and others, I create a new mode not for classifying categories of speculative fiction, but for re-envisioning those already in use. This study, which concentrates on the work of progressive, small-press, speculative writers such as Kelly Link, Forrest Aguirre, George Saunders, Jeffrey Ford, China Miéville, and many others, explores new ideas about narrative "coherence" from the points of view of self as they are presented today by cognitive, narratological, psychological, sociological, and semiotic theories. digital.library.unt.edu/ark:/67531/metadc3703/
Liturgy, Music, and Patronage at the Cappella di Medici in the Church of San Lorenzo in Florence, 1550-1609
This dissertation describes the musical and religious support of the Medici family to the Medici Chapel in Florence and the historical role of the church of San Lorenzo in the liturgical development of the period. During the later Middle Ages polyphony was allowed in the Office services only at Matins and Lauds during the Tenebrae service, the last three days of Holy Week, and at Vespers anytime. This practice continued until the end of the sixteenth century when more polyphonic motets based on the Antiphon and Responsory began to be included in the various Office hours during feast days. This practice is documented by the increased number of pieces that appear in the manuscripts. Two of the transcriptions from the church of San Lorenzo included in the appendix are selected from this later repertoire. digital.library.unt.edu/ark:/67531/metadc278255/
Live From New York and Straight to Washington: an Explorative Study of Internet Audience Perceptions of the Portrayals and Appearances of Presidential Candidates on Saturday Night Live
This thesis examines if and how the Internet viewers of Saturday Night Live skits were influenced by the video skits. the viewers’ online comments were read, categorized and analyzed for content to explore and discuss how the viewers “read” the text of the online video skits. Each video in which candidates John McCain, Sarah Palin, Hillary Clinton and Barack Obama appeared is summarized and analyzed through viewers’ comments. a sample of skits including actors’ portrayals of McCain, Palin, Clinton, Obama and Joe Biden is also summarized and analyzed to find and discuss how the viewers’ perceptions were influenced by the portrayals. digital.library.unt.edu/ark:/67531/metadc115121/
Live Sampling in Improvised Musical Performance: Three Approaches and a Discussion of Aesthetics
Three original software programs utilizing improvisation and live sampling are presented here, along with a discussion of aesthetic issues raised by each. They are entitled Zur Elektrodynamik bewegter Musiker, Motet, and Gamepad Sampler. These programs vary in the degree of required interaction and in the kind of user control. They are each studies in imitative counterpoint through live sampling, with an approach seeking elegance before solutions. Because of the improvisational nature of these works, there is no standard musical score. Instead the complete Max/MSP source code and a sound recording of performances making use of these programs in varied situations are included. A discussion of issues raised by these works includes aesthetics, ontology, performance, and the role of the composer. Non-interactive indeterminate compositions are ontologically thin, because some composerly agency is required of the performer. An interactive work can be ontologically substantial if it makes distinct and significant contributions to performance, even though it may not make sound on its own. Although reproducibility reduces ontology and eliminates aura, live sampling within a performance can deepen the ontology of the performance by recontextualizing previous events, reframing the original event as the first reference to an abstract musical idea that lies outside the musical performance. Reproducibility also diminishes the aura or stage presence in live performance with computers. Complex feedback systems can be used to create computation instruments: musical instruments whose unique structure resonates in ways not explicit in their programs. As the human condition and the situation of the composer change, definitions of the composer and performer must be revised. Composition is shifting away from the creation of static artifacts toward the design of dynamic systems. digital.library.unt.edu/ark:/67531/metadc3936/
Liver Glyoxalase Activity in Normal Mice and Mice with Lymphosarcoma
It is the purpose of this investigation to determine the variation of glyoxalase activity in liver of normal mice and in the liver of mice bearing a lymphosarcoma and to compare the glyoxalase activity of the lymphosarcoma with values previously reported in the literature for other tumor types. Further, if there is indeed a variation in liver glyoxalase activity between normal and tumor-bearing mice, it will be compared to the variation in the activity of two other enzymes present in liver tissue in relatively high concentration. digital.library.unt.edu/ark:/67531/metadc130925/
Living-learning communities and ethnicity: A study on closing the achievement gap at Regional University
This quasi-experimental study examined the impact of living-learning communities on GPA and fall-to-fall retention rates for college freshmen at Regional University (RU). The specific focus of this study was the effect of these communities on students of different ethnic groups and on the potential of these communities to reduce the academic performance gap. RU was a small public university that offered both undergraduate and graduate degree programs. RU required all freshman students to live on campus in living-learning communities beginning with the 2007-2008 academic year. This study utilized the 343 student freshman cohort class of 2008 in the living-learning communities as the treatment group. This treatment group was compared against the 193 student freshman cohort class of 2008 living off campus and against the 643 student freshman cohort class of 2006 living on campus prior to the implementation of living-learning communities. In addition, the statistics were analyzed by ethnicity to examine the impact of these communities on White, Hispanic, African American, and Native American students and their ability to reduce the academic performance gap. The research revealed that the communities implemented at RU were not statistically significant at improving academic performance or at reducing the achievement gap. The results of this study were not consistent with the literature available on living-learning communities. Current research identifies six fundamental factors critical to the success of living-learning communities: positive working relationship between academic affairs and student affairs, involvement of faculty in the residence halls, appropriate funding, assessment strategies, university wide buy-in to implementing these communities, and commitment from institutional leadership. Examination of the inputs and processes on which these learning communities developed and operated indicated that the majority of these were not well developed to sustain these communities. The divergence of these findings from the literature may be attributed to key departures from the literature regarding the set-up and operation of these communities at RU. digital.library.unt.edu/ark:/67531/metadc28393/
Living with s(k)in: An analysis of tattoo removal.
This paper investigates the role of tattoo removal in postmodernity. Specifically, I suggest tattoo removal is a technology of self in which the tattooed person can attain absolution from a "sinful" tattoo. This paper explores the construction of the confessional act in two parts: the construction of the confessing subject and the construction of the medical clinic as the confessor's listener. Using the texts medical offices place on the internet to advertise their services, I investigate the text's interpellation of subjects desiring tattoo removal. I then examine the construction of the clinic's status in the confessional act. Websites and brochures on gang tattoo removal provide a dialogue in which the clinic negotiates and attains its powerful position in the confessional act. The paper concludes by investigating the implications of the tattoo remnant, the material effects of the technology of self, and the benefits of studying the body-skin in rhetoric. digital.library.unt.edu/ark:/67531/metadc4622/
Loading the Problem Loader: The Effects of Target Training and Shaping on Trailer Loading Behavior of Horses in a Natural Setting
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The purpose of this study was to develop an effective method for trailer loading horses based on the principles of positive reinforcement. Target training and shaping were used to teach trailer loading behavior in a natural setting. Five AQHA mares were selected for this program. All five had been loaded before through the use of punishment. A two-horse trailer was used. Approximations to loading and inappropriate behaviors were the dependent variables. When intervention started the target was moved to various locations inside the trailer. Subjects started training on the left side of the trailer. After a subject was loading in the left side they were moved to the right side, then to loading half on the right and half on the left, then they were loaded by a different trainer, and into a different trailer. For one subject a limited hold was utilized, as well as a companion horse. digital.library.unt.edu/ark:/67531/metadc2576/
The Local Administration of the War on Poverty with the Maximum Feasible Participation of the Poor; its Problems and Prospects: Community Action Program
The present study examines the background of the Economic Opportunity Act in a local administrative structure. An extensive investigation is made of the Community Action Program of Laredo, Texas. The Community Action Program is a new approach which is still in the formative period and this receptive to constructive suggestions for change. Perhaps, it is hoped, this study will point the direction for such change, to the benefit of the long-run effectiveness of the poverty program as well as healthier interlocal relations. digital.library.unt.edu/ark:/67531/metadc131092/
Local or Transnational Television Programming: Media Globalization in East Asia, with an Emphasis on Development in the People's Republic of China
This study focuses on the relationship between Western transnational broadcasters and East Asian media. It analyzes 1) the processes through which Western media players are localized and 2) the impact of media globalization on local broadcasters in East Asia. Recent developments in the People's Republic of China are the primary focus in the discussion of local media. digital.library.unt.edu/ark:/67531/metadc279377/
Localized Radial Solutions for Nonlinear p-Laplacian Equation in RN
We establish the existence of radial solutions to the p-Laplacian equation ∆p u + f(u)=0 in RN, where f behaves like |u|q-1 u when u is large and f(u) < 0 for small positive u. We show that for each nonnegative integer n, there is a localized solution u which has exactly n zeros. Also, we look for radial solutions of a superlinear Dirichlet problem in a ball. We show that for each nonnegative integer n, there is a solution u which has exactly n zeros. Here we give an alternate proof to that which was given by Castro and Kurepa. digital.library.unt.edu/ark:/67531/metadc6059/
Location of the Carotenoid Pigments of Corynebacterium Species Strain 7E1C
The purpose of this investigation was to determine the site of the carotenoid pigments in C. spp. strain 7E1C as a step towards resolving the role of the pigment in the cell. digital.library.unt.edu/ark:/67531/metadc164089/
Locational Determinants of Real Estate Valuation: an Analysis of Spatial Autocorrelation in the Hedonic Pricing of Real Estate
Recent studies of the valuation of real estate have concentrated on the use of hedonic pricing techniques in which the implicit prices of the component characteristics of an asset are inferred from the observed sale price using regression analysis. All of these studies include as explanatory variables one or more locational factors, such as distance to the central business district, as proxies for the effect that location has on the utility of land. In this research, the explicit consideration of the location of real estate in terms of the geographic or Cartesian coordinates (spatial attributes) of observed sales is shown to be a potential substitute for such proxies, either wholly or in part. Such use of spatial attributes could improve the usefulness of the hedonic methodology while at the same time significantly reducing cost and eliminating sources of error. digital.library.unt.edu/ark:/67531/metadc278245/
Locofocos, Van Buren Democrats and Progress
An investigation of the origins and history of the Locofoco party, with particular emphasis upon the divergent theories which made up its heterogeneous ideology, is the first object of this study. A comparison can be made between this ideology and the national administration by studying the developments that took place in 1837 and by evaluating the reasons for the ultimate defeat of the Van Buren Democrats three years later. digital.library.unt.edu/ark:/67531/metadc163971/
Logic Programming Tools for Dynamic Content Generation and Internet Data Mining
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The phenomenal growth of Information Technology requires us to elicit, store and maintain huge volumes of data. Analyzing this data for various purposes is becoming increasingly important. Data mining consists of applying data analysis and discovery algorithms that under acceptable computational efficiency limitations, produce a particular enumeration of patterns over the data. We present two techniques based on using Logic programming tools for data mining. Data mining analyzes data by extracting patterns which describe its structure and discovers co-relations in the form of rules. We distinguish analysis methods as visual and non-visual and present one application of each. We explain that our focus on the field of Logic Programming makes some of the very complex tasks related to Web based data mining and dynamic content generation, simple and easy to implement in a uniform framework. digital.library.unt.edu/ark:/67531/metadc2677/
London, Ankara, and Geneva: Anglo-Turkish Relations, The Establishment of the Turkish Borders, and the League of Nations, 1919-1939
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This dissertation asserts the British primacy in the deliberations of the League of Nations Council between the two world wars of the twentieth century. It maintains that it was British imperial policy rather than any other consideration that ultimately carried the day in these deliberations. Given, as examples of this paramountcy, are the discussions around the finalization of the borders of the new republic of Turkey, which was created following the collapse of the Ottoman Empire at the end of the First World War. These discussions focused on three areas, the Mosul Vilayet or the Turco-Iraqi frontier, the Maritza Delta, or the Turco-Greek frontier, and the Sanjak of Alexandretta or the Turco-Syrian frontier. digital.library.unt.edu/ark:/67531/metadc5515/
Lone Star Booster: The Life of Amon G. Carter
Abstract Though a very influential Texan during the first half of the twentieth century, Amon Carter has yet to receive a full scholarly treatment, a problem which this dissertation attempts to rectify by investigating the narrative of Carter’s life to see how and why he was able to rise from humble beginnings to become a powerful publisher who symbolized boosterish trends within Texas and the New South. Publisher of the Fort Worth Star-Telegram, philanthropist, oilman, and aviation supporter, Carter used his power and influence to become a leading booster of his city and region seamlessly making the transition from being a business progressive to New Deal supporter to an Eisenhower Democrat. His connections with corporations like American Airlines and General Motors helped bring aviation and industry to his region, and his ability to work with public and private entities helped inspire his failed attempt to make the Trinity River navigable up to Fort Worth. His own success at building the Star-Telegram into the largest circulating newspaper in Texas encouraged him to expand his media empire into radio and television, while the wealth he gained from his oil activities enabled him to form a philanthropic foundation that would provide support for Fort Worth’s medical, cultural, and educational needs for the future. Possessing a life marked by both success and failure, it is clear throughout this dissertation that Carter embodied the idea of the New South civic booster, a figure who at once promoted his goals for his city and region while understanding how this fit within the larger national context. digital.library.unt.edu/ark:/67531/metadc103297/
Lone Star under the Rising Sun: Texas's "Lost Battalion," 2nd Battalion, 131st Field Artillery Regiment, During World War II
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In March 1942, the 2nd Battalion, 131st Field Artillery Regiment, 36th Division, surrendered to the Japanese Imperial Army on Java in the Dutch East Indies. Shortly after the surrender, the men of the 2nd Battalion were joined as prisoners-of-war by the sailors and Marines who survived the sinking of the heavy cruiser USS Houston. From March 1942 until the end of World War II, these men lived in various Japanese prison camps throughout the Dutch East Indies, Southeast Asia, and in the Japanese home islands. Forced to labor for their captors for the duration of the conflict, they performed extremely difficult tasks, including working in industrial plants and mining coal in Japan, and most notably, constructing the infamous Burma-Thailand Death Railway. During their three-and-one-half years of captivity, these prisoners experienced brutality at the hands of the Japanese. Enduring prolonged malnutrition and extreme overwork, they suffered from numerous tropical and dietary diseases while receiving almost no medical care. Each day, these men lived in fear of being beaten and tortured, and for months at a time they witnessed the agonizing deaths of their friends and countrymen. In spite of the conditions they faced, most survived to return to the United States at war's end. This study examines the experiences of these former prisoners from 1940 to 1945 and attempts to explain how they survived. digital.library.unt.edu/ark:/67531/metadc4737/
The Long Chorale Preludes of J. S. Bach (1685-1750): Study of Accompaniments together with Three Recitals of Selected Works by Dietrich Buxtehude (1637-1707), J. S. Bach, Louis Vierne (1870-1937), and Others
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Johann Sebastian Bach's chorale preludes are varied and artistic not only in the treatment of chorale melodies, but also in the accompaniments of those chorale melodies. This study examines the accompaniments of Bach's long chorale preludes, focusing on identifying the various types and the characteristics that make them unique. This study investigates the two broad categories of accompaniments depending on whether the motives are chorale-derived or independent of the chorale. While the chorale prelude accompaniments in the first large group are closely related, the accompaniments of the chorale preludes in the second group stand independently and illustrate the vast range of Bach's compositional skill. Both groups demonstrate Bach's interest in expanding his predecessors' models, a trait that can be traced throughout all of Bach's compositional history. digital.library.unt.edu/ark:/67531/metadc5219/
Long Distance International Caregiving to Elderly Parents Left Behind: a Case of Nigerian Adult Children Immigrants in Usa
The intent of this qualitative, grounded theory study was to understand why the Nigerian (Igbo) adult immigrants in the United States provide long distance international caregiving to their elderly parents left behind in Nigeria, the challenges they encounter, and their views on long-term service care. This study was grounded in semi-structured interviews of 20 Igbo adult immigrants residing in the Dallas/Fort Worth Metropolis. Analysis of the literature demonstrates a lack of existent topic on long distance international caregiving to elderly parents left behind in Nigeria. Findings show that reasons for Igbo adult children immigrants providing care to their elderly parents left behind stem from filial obligation, immigrant’s position in the family, perceived vulnerability of parents, and lack of government support. Also because of cultural expectations, the participants felt obligated to reciprocate to the care their elderly parents gave to them when they were growing up. While providing long distance international care, the participants encountered some challenges like adjusting to their new country, distance, financial constraints, being available for family procreation, issues with means of communication, and legal papers and parental adjustment to life in the U.S. This study also revealed that the participants would support the Nigerian government and private sector to provide long-term service care for the aging population. The findings led to some policy recommendations. digital.library.unt.edu/ark:/67531/metadc407817/
"The Long Goodbye": Uncertainty Management in Alzheimer's Caregivers
Caregivers for individuals diagnosed with Alzheimer's disease (AD) shoulder a remarkably complex burden as compared to other caregivers of elderly individuals. For long distance caregivers, geographical separation further compounds the problems experienced by AD caregivers, as they are isolated from family members and support networks. Both on-site and long-distance AD caregivers experience uncertainty; the findings from this study illustrate how AD caregivers manage the uncertainty of the disease and primary care, as well as how uncertainty differs between on-site and long-distance caregivers. AD caregiver (N = 13) interviews were transcribed and qualitatively analyzed using uncertainty management theory as a thematic lens. The analysis revealed that AD caregivers experience overwhelming feelings of burden, guilt, and doubt; however, these feelings manifest differently depending on caregiver type. The findings of this study demonstrate that sources for obtaining information regarding AD and caregiving were useful for on-site caregivers; however, the sources did not account for the needs of long-distance caregivers or the psychosocial needs of on-site caregivers. Furthermore, AD caregivers did not seek support or information about AD and caregiving from health care professionals. Implications for future research regarding long-distance and on-site AD caregiving are discussed. digital.library.unt.edu/ark:/67531/metadc67947/
Long-Term Care Administrator Licensure and Certification: An Emerging Health Profession
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The long-term care administrator profession is one that is both new and evolving. The unique historical perspective of this health profession is brief in the number of years it encompasses and crucial in understanding the current issues facing the profession. Administrator experiences provide a point of reference regarding the profession's structural problems. Ethical considerations play a dynamic role in administrators' daily jobs as well as their continued licensure. The significance of the profession's ongoing problems at the state and national level causes the need for alternatives to the current system. A combination of these alternatives must be embraced to assist in the recruitment and retention of long-term care administrators. digital.library.unt.edu/ark:/67531/metadc2443/
The Long-Term Effects of Bereavement: A Longitudinal Study
The purpose of the present study was to examine the applicability of a model of bereavement to the long-term adjustment to loss. Based on Allen's (1990) model, it was predicted that the variables experienced competence, perceived resources, and the impact of the loss would contribute strongly to overall long-term bereavement adjustment. It was also predicted that time and multiple losses would impact adjustment to loss. digital.library.unt.edu/ark:/67531/metadc278017/
Long-Term Impact of Mega-Sport Events on the Host Region
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The purpose of this paper is to analyze and identify the major factors that determine the success or failure of mega-sports events. The report begins with a discussion of why localities are willing to invest large sums of public monies in infrastructure and services to host these events. This is followed by a review of the methods used to assess the economic, fiscal, and social impacts of hosting large sporting events. It is observed that comprehensive analyses of the impacts of these events are not undertaken. Finally, the major factors that affect the success of these events are discussed along with suggestions for improving studies evaluating success or failure. digital.library.unt.edu/ark:/67531/metadc5554/
Long Term Property Prediction of Polyethylene Nanocomposites
The amorphous fraction of semicrystalline polymers has long been thought to be a significant contributor to creep deformation. In polyethylene (PE) nanocomposites, the semicrystalline nature of the maleated PE compatibilizer leads to a limited ability to separate the role of the PE in the nanocomposite properties. This dissertation investigates blown films of linear low-density polyethylene (LLDPE) and its nanocomposites with montmorillonite-layered silicate (MLS). Addition of an amorphous ethylene propylene copolymer grafted maleic anhydride (amEP) was utilized to enhance the interaction between the PE and the MLS. The amorphous nature of the compatibilizer was used to differentiate the effect of the different components of the nanocomposites; namely the matrix, the filler, and the compatibilizer on the overall properties. Tensile test results of the nanocomposites indicate that the addition of amEP and MLS separately and together produces a synergistic effect on the mechanical properties of the neat PE Thermal transitions were analyzed using differential scanning calorimetry (DSC) to determine if the observed improvement in mechanical properties is related to changes in crystallinity. The effect of dispersion of the MLS in the matrix was investigated by using a combination of X-ray Diffraction (XRD) and Scanning Electron Microscopy (SEM). Mechanical measurements were correlated to the dispersion of the layered silicate particles in the matrix. The nonlinear time dependent creep of the material was analyzed by examining creep and recovery of the films with a Burger model and the Kohlrausch-Williams-Watts (KWW) relation. The effect of stress on the nonlinear behavior of the nanocomposites was investigated by analyzing creep-recovery at different stress levels. Stress-related creep constants and shift factors were determined for the material by using the Schapery nonlinear viscoelastic equation at room temperature. The effect of temperature on the tensile and creep properties of the nanocomposites was analyzed by examining tensile and creep-recovery behavior of the films at temperatures in the range of 25 to -100 oC. Within the measured temperature range, the materials showed a nonlinear temperature dependent response. The time-temperature superposition principle was successfully used to predict the long term behavior of LLDPE nanocomposites. digital.library.unt.edu/ark:/67531/metadc9738/
Longitudinal Evaluation of a Child/Adolescent Psychiatric Program
Children and adolescent psychiatric inpatients (n = 25) versus staff (n = 35) milieu perceptions were measured with the Ward Atmosphere Scale (WAS) Form K (Kids). The perceptions were compared with previous data collected in 1981, 1982, and 1984 on the same unit. The 1993 staff and patients continued to perceive the unit as a therapeutic environment despite recent restrictions on length of stay due to health care reform. The views of the staff and patients were found to be divergent but less so than in previous years. Additionally, the more seriously ill a patient was determined to be, the more negatively he or she perceived the environment. Differences in perceptions between day shift versus night shift and administrative versus non-administrative staff were also found and discussed. Staff perceptions versus their ideal conceptions were also investigated and compared with those of the 1984 staff. The 1994 staff was found to more closely approximate their ideals than the 1984 staff. digital.library.unt.edu/ark:/67531/metadc277736/
A Longitudinal Examination of Factors Associated with Custodial Grandparenting: A Test of Moderated Mediation
The purpose of this study was to explore the following relationships: (a) how moderating factors (gender, age, ethnicity, social support, marital status, reason for role assumption and number of grandchildren in the home) can influence the mediating role of resiliency, and (b) how resiliency may mediate the negative effects of raising grandchildren (role demands, life disruptions, and difficulties with grandchildren) on grandparent adjustment over time. Resiliency was hypothesized to have the greatest effect on custodial grandparents who experienced the most stress (i.e., older, single, Caucasian males lacking social support and raising more than one grandchild). Mediation was assessed using structural equation modeling. Results indicated resilience mediated the relationship between role assumptions (i.e., role demands and life disruptions) and grandparent adjustment; however, resilience did not mediate the relationship between grandchild characteristics and grandparent adjustment. Due to the small number of custodial grandfathers (n = 14), non-married grandparents (n = 29), non-Caucasian grandparents (n = 10), the small number of grandparents who assumed the custodial role for less ambiguous reasons (n = 24), and the number of custodial grandparents with more than one grandchild residing in the home (n = 29) participating within the study, hierarchical multiple regressions were only conducted to test for moderated mediation for perceived social support and the age of the grandparent. Results indicated resilience mediates the relationship between life disruption and grandparent well-being for younger custodial grandparents and for custodial grandparents with perceived high social support. digital.library.unt.edu/ark:/67531/metadc12167/
A Longitudinal Investigation of Different Exercise Modalities on Social Physique Anxiety
The current study examined if students' levels of social physique anxiety vary depending on the type of exercise setting they select. The study determined the degree to which social physique anxiety changed over the course of semester-long involvements in different exercise settings. digital.library.unt.edu/ark:/67531/metadc278207/
A Longitudinal Study Describing the Career Identity Development of Low Income and First Generation College Bound Students
This mixed methods study investigated the influence of a career development program attended by low income, first generation, college bound students. Phase I took place in 2006 and 2007 when the students participated in the Upward Bound summer Bridge program. During Phase II in 2009, follow up interviews were conducted. Phase III was completed in 2014 and also included follow-up interviews. Career Identity (CI) scores from My Vocational Situation and Holland codes from the Self Directed Search were obtained during each phase. Changes in measured career identity scores and codes were interpreted by taking into account the students’ experiences. Interviews examined common themes demonstrating the career development of the participants. digital.library.unt.edu/ark:/67531/metadc500070/
A Longitudinal Study of Graduation, Retention, and School Dropout for Students in Regular and Special Education
This study examined differences in retention, graduation, and dropout between students in grades 9-12 in special education and regular education in the state of Texas for school years 1992-93 through 1995-96. The purpose was to gather information regarding the possible adverse effects of increased academic standards and mandatory testing on students with disabilities. The results indicate that when compared to students in regular education, students with disabilities are significantly more likely to be retained and are not experiencing the same decline in dropout rates as regular students. There is no indication that students with disabilities have been adversely affected by school reform but the size of the school district may play a significant role in whether or not students with disabilities dropout of school. digital.library.unt.edu/ark:/67531/metadc279003/
A Longitudinal Study of Juvenile Facility Directors' Job Satisfaction Levels in the United States
This national study, focusing on job satisfaction within juvenile facility directors, was conducted by the means of a survey. The study is longitudinal in nature; the survey was conducted in 1995 and 2000. Other past studies have focused on line level employees, guards, and the juveniles, but few have concentrated on juvenile facility directors. Literature on directors is currently lacking, this continuous study will give a better ongoing perspective of their attitudes and beliefs. Findings from this particular study will help to address current concerns inside of the system, starting at the apex. The survey's goal is to correlate factors that have a direct impact on their job satisfaction. Results indicate that staff issues have a dramatic impact on a director's job satisfaction. digital.library.unt.edu/ark:/67531/metadc5344/
Longitudinal Study of Loneliness and Depression as Predictors of Health in Mid- to Later Life
The longitudinal relationship between loneliness and depression as predictors of chronic health conditions in middle-aged to older adults was investigated utilizing data collected by the Health and Retirement Study (HRS), a national representative longitudinal study of health, retirement, and aging, conducted by the Institute for Social Research (ISR) Survey Research Center (SRC) at the University of Michigan, funded by the National Institute on Aging and the Social Security Administration. The correlation between these loneliness and depression was moderate (r = .32 to r = 51). The single-item subjective self-report of loneliness was found to be an adequate measure of loneliness. A cross-lagged panel correlation and regression design was used to examine the longitudinal relationship between loneliness, depression, and chronic health conditions. A temporal precedence was indicated implying a causal relationship with depression leading to subsequent loneliness. The relationship between recurring loneliness and chronic health conditions was weak (r = .13). digital.library.unt.edu/ark:/67531/metadc6124/