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UNT Theses and Dissertations
- Fields and Armor: A Comparative Analysis of English Feudalism and Japanese Hokensei
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Fields and Armor is a comparative study of English feudalism from the Norman Conquest until the reign of King Henry II (1154-1189) and Japan’s first military government, the Kamakura Bakufu (1185- 1333). This thesis was designed to examine the validity of a European-Japanese comparison. Such comparisons have been attempted in the past. However, many historians on both sides of the equation have levied some serious criticism against these endeavors. In light, of these valid criticisms, this thesis has been a comparison of medieval English government and that of the Kamakura-Samurai, because of a variety of geographic, cultural and social similarities that existed in both regions. These similarities include similar military organizations and parallel developments, which resulted in the formation of two of most centralized military governments in either Western Europe or East Asia, and finally, the presence and real enforcement of two forms of unitary inheritance in both locales. digital.library.unt.edu/ark:/67531/metadc103320/
- Arithmetic Computations and Memory Management Using a Binary Tree Encoding af Natural Numbers
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Two applications of a binary tree data type based on a simple pairing function (a bijection between natural numbers and pairs of natural numbers) are explored. First, the tree is used to encode natural numbers, and algorithms that perform basic arithmetic computations are presented along with formal proofs of their correctness. Second, using this "canonical" representation as a base type, algorithms for encoding and decoding additional isomorphic data types of other mathematical constructs (sets, sequences, etc.) are also developed. An experimental application to a memory management system is constructed and explored using these isomorphic types. A practical analysis of this system's runtime complexity and space savings are provided, along with a proof of concept framework for both applications of the binary tree type, in the Java programming language. digital.library.unt.edu/ark:/67531/metadc103323/
- The Martial Arts of Medieval Europe
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During the late Middle Ages and into the Renaissance, fighting books—Fechtbücher—were produced in northern Italy, among the German states, in Burgundy, and on the Iberian peninsula. Long dismissed by fencing historians as “rough and untutored,” and largely unknown to military historians, these enigmatic treatises offer important insights into the cultural realities for all three orders in medieval society: those who fought, those who prayed, and those who labored. The intent of this dissertation is to demonstrate, contrary to the view of fencing historians, that the medieval works were systematic and logical approaches to personal defense rooted in optimizing available technology and regulating the appropriate use of the skills and technology through the lens of chivalric conduct. I argue further that these approaches were principle-based, that they built on Aristotelian conceptions of arte, and that by both contemporary and modern usage, they were martial arts. Finally, I argue that the existence of these martial arts lends important insights into the world-view across the spectrum of Medieval and early Renaissance society, but particularly with the tactical understanding held by professional combatants, the knights and men-at-arms. Three treatises are analyzed in detail. These include the anonymous RA I.33 Latin manuscript in the Royal Armouries at Leeds; the early German treatise attributed to Hanko Döbringer that glosses the great Johannes Liechtenauer; and the collection of surviving treatises by the Friulian master, Fiore dei Liberi. Each is compared in order to highlight common elements of usage that form the principles of the combat arts. digital.library.unt.edu/ark:/67531/metadc103377/
- Podcasting in an Eighth-Grade American History Class
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The purpose of this study was to see how students used podcasts in an eighth-grade American history unit and the value they placed on them as an educational tool. The 6-week study was conducted in a suburban middle school in a district that is part of a large metropolitan area in Texas. Participants included 29 students and 2 eighth-grade teachers. The research questions were the following: (1) How do students use podcasts in an eighth-grade American history class? (2) How do students perceive the impact of the podcasts on their overall learning of the subject material? and (3) Do the podcasts motivate the students to study? Quantitative data were collected through a Likert-scaled student survey and logs kept by students. Qualitative data were collected through an open-ended portion of the student survey, student focus group discussion, and a faculty interview. The treatment tools were audio podcasts in the form of vocabulary-quiz reviews, historical vignettes, lectures, and a unit test review—all on the topic of the American Revolution. The data indicated that the students primarily used their computers at home to listen to the podcasts as they prepared for quizzes and/or the unit test. The students believed that the podcasts had a positive impact upon their grade, were a positive educational tool, and helped them to better understand the material at hand. The students also wanted to see an expansion of podcast usage in other subjects. The students claimed that it motivated them to study and the participating teachers agreed that it motivated the students to study in a non-traditional manner. Data illustrated a need for further research regarding podcasting’s impact on grades and performance at the K-12 level, student podcast construction, podcast delivery modes, and podcast use with special education and ELL students. digital.library.unt.edu/ark:/67531/metadc103307/
- Assessment and Treatment of Multiple Topographies of Self-injury Maintained by Separate Reinforcement Contingencies
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Functional analysis procedures were used to assess and treat multiple topographies of self-injurious behavior exhibited by an individual. An experimental functional analysis indicated that one topography, hand biting, appeared to be maintained by social positive reinforcement in the form of delivery of tangible items. The analysis also provided evidence that a second form of self-injury, skin picking, was automatically reinforced. To treat positively reinforced hand biting, access to a preferred tangible was arranged contingent on the omission of biting for a prespecified time interval. Hand biting was nearly eliminated, and low rates were maintained as the schedule of reinforcement was thinned to 10 min. Competing stimulus assessments identified that magazines effectively suppressed all occurrences of skin picking; therefore, noncontingent access to magazines was implemented. Using a combination of multielement and multiple baseline designs, we were able to demonstrate that the two topographies of self-injury were maintained by independent reinforcement contingencies and that interventions corresponding to each topography and function effectively treated both behaviors. digital.library.unt.edu/ark:/67531/metadc103369/
- Missed Opportunities: Examining The Literacy
Experiences Of African American Students Displaced By Hurricane Katrina.
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The purpose of this study was to examine how five African American middle school students, who were displaced by Hurricane Katrina represent their literacy experiences before, during, and after their displacement. Specifically, the two research questions were: (a) What are the stories that these middle school students tell about their lives, before, during, and after their displacement, and (b) What do their stories reveal about their literacy experience before, during, and after their displacement? Narrative Inquiry was the chosen methodology for the study, which allowed the participants to tell their experiences from a first-person perspective. It also encouraged the participants to reflect upon these experiences, in order to give meaning to their thoughts and emotions. Employing a critical lens and perspective, I constructed a narrative profile for each participant, which was then analyzed using these methods. Each narrative profile detailed the literacy experiences of the participants before Hurricane Katrina, during the transition period, and current literacy experiences now that the participants are resettled and attending school in the host city. These data were supplemented by archival data such as report cards, individual education plans (IEPs), and Texas Assessment of Knowledge and Skills (TAKS) scores. Data analysis of the five participants’ literacy experiences revealed common themes. These participants have pleasant memories of school literacy before the storm and mentioned “choice” as a component of those experiences. During the transition period, few or no literacy experiences took place. Hence, there were missed opportunities for the participants to use literacy experiences to make connections to their new world. Participants reported current classroom and school experiences were controlled environments that led to controlled literacy experiences. This compartmentalization of literacy experiences is not consistent with the critical literacy perspective adopted in this study. Their interviews suggested that they that they saw no connection between school literacy and their literacy experiences outside school. digital.library.unt.edu/ark:/67531/metadc103373/
- Automatic Extraction of Highlights from a Baseball Video Using HMM and MPEG-7 Descriptors
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In today’s fast paced world, as the number of stations of television programming offered is increasing rapidly, time accessible to watch them remains same or decreasing. Sports videos are typically lengthy and they appeal to a massive crowd. Though sports video is lengthy, most of the viewer’s desire to watch specific segments of the video which are fascinating, like a home-run in a baseball or goal in soccer i.e., users prefer to watch highlights to save time. When associated to the entire span of the video, these segments form only a minor share. Hence these videos need to be summarized for effective presentation and data management. This thesis explores the ability to extract highlights automatically using MPEG-7 features and hidden Markov model (HMM), so that viewing time can be reduced. Video is first segmented into scene shots, in which the detection of the shot is the fundamental task. After the video is segmented into shots, extraction of key frames allows a suitable representation of the whole shot. Feature extraction is crucial processing step in the classification, video indexing and retrieval system. Frame features such as color, motion, texture, edges are extracted from the key frames. A baseball highlight contains certain types of scene shots and these shots follow a particular transition pattern. The shots are classified as close-up, out-field, base and audience. I first try to identify the type of the shot using low level features extracted from the key frames of each shot. For the identification of the highlight I use the hidden Markov model using the transition pattern of the shots in time domain. Experimental results suggest that with reasonable accuracy highlights can be extracted from the video. digital.library.unt.edu/ark:/67531/metadc103388/
- A psychosocial interaction study of adulthood demographics and non-compulsory education participation using the National Household Education Survey.
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This report analyses the NHES: 2005 data to present the state of American education in reference to “adult” participation in education. Psychosocial interaction theory is applied to the social event of attaining adulthood to analyze and report the propensity of American adults to participate in non-compulsory adult education. The review of the literature of perceptual demographic variables of adult attainment: age, prior education, subordinate responsibility, child-age dependent care, marital status, job stability, and home ownership. The analysis compares the data of participants and non-participants of non-compulsory adult education using binomial logistic regression analysis with tests, for a 95% confidence level and .05 significance. Included is a discussion of how appropriately aligned development opportunities and experiences may further increase education effectiveness and performance outcomes. digital.library.unt.edu/ark:/67531/metadc103300/
- The Effect of Relationship Quality on Mental Representations of Social Support and Cardiovascular Reactivity
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The aim of the current study was to examine how thinking about qualitatively different social network members may differentially affect cardiovascular reactivity to a subsequent stressor. Eighty-two undergraduates were asked to think and write about different types of relationships preceding a social stressor. No differences between conditions in CVR were found during social support induction phase or the stressor task. Women in the supportive condition were found to have slower SV recovery than those in the ambivalent condition. The results of this study are inconsistent with previous evidence for a relationship between mental representations of social ties and CVR. Future research should seek to rule out confounding variables and clarify this effect. digital.library.unt.edu/ark:/67531/metadc103375/
- Predictive Relationships among Learner Characteristics, Academic Involvement, and Doctoral Education Outcomes
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The literature identifies multiple factors pertinent to learner characteristics and learning experiences that may promote doctoral education outcomes, and yet little quantitative research has examined relationships between those factors deemed important in the effectiveness of doctoral education. This study sought to examine predictive relationships among doctoral students’ learner characteristics, their involvement in mentorship and intellectual community, and doctoral education outcomes. Using Astin’s theory of involvement and the literature on signature pedagogies in doctoral education as conceptual guides, a survey instrument was constructed for the purpose of measuring variables identified as relevant to the effective formation of scholars. Central to the conceptualization of this study was academic involvement as represented by mentorship and intellectual community. The instrument was validated in a two-stage pilot testing process and administered to doctoral candidates at three public Texas higher education institutions. Of the 217 participants, the majority were female, White (Non-Hispanic), US citizens, and were pursuing education doctorates. Data were analyzed using multivariate statistical analyses. Reliability and validity estimates indicated psychometric integrity of the 20 observed variables measured to represent the constructs of mentorship and intellectual community. Results indicated that doctoral students’ learner characteristics were not notably predictive of doctoral students’ degree of involvement in mentorship and intellectual community (p < .05, R2 = .23). Doctoral students’ degree of academic involvement was strongly predictive of outcomes (p < .001, R2 = .58), particularly student satisfaction with the doctoral education experience and self-efficacy in conducting various forms of scholarly work. Of this effect, more tangible outcomes such as scholarly productivity and degree progress were not meaningfully related to academic involvement. Regardless of the frequency of academic involvement, students perceived faculty mentorship and intellectual community as very important. The predictive value and perceived importance of faculty mentorship and intellectual community highlight the critical role faculty and peer support plays in the doctoral learning experience, and imply that such teaching and learning practices should be promoted in doctoral education. Considering that satisfaction and self-efficacy tend to be related to other educational outcomes, those concerned with the overall quality of doctoral education should focus increased attention on building collegial, effective, productive relationships among and within program communities. digital.library.unt.edu/ark:/67531/metadc103286/
- Opera at the Threshold of a Revolution: Francis Poulenc’s Dialogues des Carmélites (1953-1956)
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Francis Poulenc’s three-act opera Dialogues des Carmélites (1953-1956) depicts the struggles of the novice nun Blanche de la Force during the Reign of Terror of the French Revolution. The use of Latin liturgical music at critical points in the opera conveys the ritualistic nature of Catholic worship. The spiritual message of mystical substitution, along with the closely related notion of vicarious suffering, imbue the opera with a spirituality that offers a sharp contrast to earlier operatic settings of Catholic texts, particularly during the age of grand opera. Marian devotion also plays an important role in the opera. The final tableau of the opera stages the execution of Blanche and her sisters, complete with the sound of a guillotine, with the nuns singing the Salve Regina as they proceed to the scaffold. The multivalence of the final tableau highlights the importance of voice and its absence. While the nuns, onstage spectators, and the guillotine are audibly present in the scene, the priest participates solely through gesture. The surfacing of the Lacanian Real in the silent moment of traumatic shock that follows the guillotine’s first fall allows for intertextual references to the opera in Poulenc’s Sonate pour Flûte et Piano (1957) to function as a work of remembrance. digital.library.unt.edu/ark:/67531/metadc103288/
- Comparing Latent Dirichlet Allocation and Latent Semantic Analysis as Classifiers
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In the Information Age, a proliferation of unstructured text electronic documents exists. Processing these documents by humans is a daunting task as humans have limited cognitive abilities for processing large volumes of documents that can often be extremely lengthy. To address this problem, text data computer algorithms are being developed. Latent Semantic Analysis (LSA) and Latent Dirichlet Allocation (LDA) are two text data computer algorithms that have received much attention individually in the text data literature for topic extraction studies but not for document classification nor for comparison studies. Since classification is considered an important human function and has been studied in the areas of cognitive science and information science, in this dissertation a research study was performed to compare LDA, LSA and humans as document classifiers. The research questions posed in this study are: R1: How accurate is LDA and LSA in classifying documents in a corpus of textual data over a known set of topics? R2: How accurate are humans in performing the same classification task? R3: How does LDA classification performance compare to LSA classification performance? To address these questions, a classification study involving human subjects was designed where humans were asked to generate and classify documents (customer comments) at two levels of abstraction for a quality assurance setting. Then two computer algorithms, LSA and LDA, were used to perform classification on these documents. The results indicate that humans outperformed all computer algorithms and had an accuracy rate of 94% at the higher level of abstraction and 76% at the lower level of abstraction. At the high level of abstraction, the accuracy rates were 84% for both LSA and LDA and at the lower level, the accuracy rate were 67% for LSA and 64% for LDA. The findings of this research have many strong implications for the improvement of information systems that process unstructured text. Document classifiers have many potential applications in many fields (e.g., fraud detection, information retrieval, national security, and customer management). Development and refinement of algorithms that classify text is a fruitful area of ongoing research and this dissertation contributes to this area. digital.library.unt.edu/ark:/67531/metadc103284/
- Integrating Selective Herbicide and Native Plant Restoration to Control Alternanthera philoxeroides (Alligator Weed)
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Exotic invasive aquatic weeds such as alligator weed (Alternanthera philoxeroides) threaten native ecosystems by interfering with native plant communities, disrupting hydrology, and diminishing water quality. Development of new tools to combat invaders is important for the well being of these sensitive areas. Integrated pest management offers managers an approach that combines multiple control methods for better control than any one method used exclusively. In a greenhouse and field study, we tested the effects of selective herbicide application frequency, native competitor plant introduction, and their integration on alligator weed. In the greenhouse study, alligator weed shoot, root, and total biomass were reduced with one herbicide application, and further reduced with two. Alligator weed cumulative stem length and shoot/root ratio was only reduced after two applications. In the greenhouse, introduction of competitors did not affect alligator weed biomass, but did affect shoot/root ratio. The interaction of competitor introduction and herbicide did not significantly influence alligator weed growth in the greenhouse study. In the field, alligator weed cover was reduced after one herbicide application, but not significantly more after a second. Introduction of competitor species had no effect on alligator weed cover, nor did the interaction of competitor species and herbicide application. This study demonstrates that triclopyr amine herbicide can reduce alligator weed biomass and cover, and that two applications are more effective than one. To integrate selective herbicides and native plant introduction successfully for alligator weed control, more research is needed on the influence competition can potentially have on alligator weed growth, and the timing of herbicide application and subsequent introduction of plants. digital.library.unt.edu/ark:/67531/metadc103280/
- Communication System over Gnu Radio and OSSIE
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GNU Radio and OSSIE (Open-Source SCA (Software communication architecture) Implementation-Embedded) are two open source software toolkits for SDR (Software Defined Radio) developments, both of them can be supported by USRP (Universal Software Radio Peripheral). In order to compare the performance of these two toolkits, an FM receiver over GNU Radio and OSSIE are tested in my thesis, test results are showed in Chapter 4 and Chapter 5. Results showed that the FM receiver over GNU Radio has better performance, due to the OSSIE is lack of synchronization between USRP interface and the modulation /demodulation components. Based on this, the SISO (Single Input Single Output) communication system over GNU Radio is designed to transmit and receive sound or image files between two USRP equipped with RFX2400 transceiver at 2.45G frequency. Now, GNU Radio and OSSIE are widely used for academic research, but the future work based on GNU Radio and OSSIE can be designed to support MIMO, sensor network, and real time users etc. digital.library.unt.edu/ark:/67531/metadc103299/
- Senior Graduating Nursing Students: Career Choices in Gerontological Nursing in Response to Expanding Geriatric Population
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Access to healthcare is needed and wanted by people of all ages and especially by those of the older population. The number of people in the 65 years of age and older population is rapidly growing with their needs expected to have a significant impact on the existing healthcare system and healthcare providers. The impact will be critical given the severe shortage of healthcare providers, especially of nurses and the rate of services being more often provided in non-hospital settings. The objectives of the study were to discover the plans of graduating nursing students as they choose their first place of employment, if they have future plans to pursue a nursing advance practice degree, and if they are very happy with their decision to become a nurse. Data for the study were obtained from a questionnaire presented to senior graduating nursing students. The findings were: (a) Most students prefer a hospital setting. (b) Younger students are three times as likely to seek out the hospital, and 1/3 of the students seek out the hospital setting because they were encouraged to become a nurse. (c) About 70% of the students want to work with their friends while 1/3 will seek the hospital worksite, as it is perceived as being the strongest resource in paying back loans. (d) Nearly 87% are considering the nursing advance practice role, and 52% have interest in the nurse practitioner role. The majority of students identified as very happy with their decision to become a nurse. This study provided insight for schools of nursing as they make curriculum decisions and to businesses as they learn of the preferences and plans of the new emerging nurses. digital.library.unt.edu/ark:/67531/metadc103285/
- Noctilucent
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This dissertation is composed of two parts. Part I discusses the evolution of meditative poetry as a genre, with a particular emphasis on the influence of women poets and feminist critical theory. Part II is a collection of poems. Although several popular and critically-acclaimed poets working today write meditative poems, meditative poetry as a genre has not been systematically examined since M.H. Abrams’s essay on the meditative mode in Romantic poetry, “Structure and Style in the Greater Romantic Lyric.” Because one of the driving forces of meditative poetry is a longing for, or recognition of, a state of perception that lies between individual being and some form of universal ordering principle, meditative poetry might seem to be antithetical to a postmodern world that is fragmentary, contingent, and performative; indeed, earlier definitions of meditative poetry, tied to historical and cultural understandings of the individual and the Universal, no longer reflect “how we know” but only “how we knew.” However, this essay argues that there is a contemporary meditative structure that allows for a continued relationship between the individual and the Universal without resorting to the essentialism implicit in the genre as traditionally described. This new structure owes much to feminist theory, in particular écriture féminine, which models a method for recovery of self in language that would seek to efface it. In order to expose the boundaries of the contemporary meditative mode, and to outline its relationship to écriture féminine, this essay analyzes meditative poems from four contemporary poets: Kay Ryan, Jorie Graham, Linda Gregerson, and Linda Bierds, and contrasts contemporary variations on the genre with earlier traditions, identifying an evolved form that better reflects a postmodern rhetoric. digital.library.unt.edu/ark:/67531/metadc103295/
- Economic Motivation of the Ex-Dividend Day Anomaly: Evidence from an Alternative Tax Environment
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Several studies have observed that stocks tend to drop by an amount that is less than the dividend on the ex-dividend day, the so-called ex-dividend day anomaly. However, there still remains a lack of consensus for a single explanation of this anomaly. Different from other studies, this dissertation attempts to answer the primary research question: How can investors make trading profits from the ex-dividend day anomaly and how much can they earn? With this goal, I examine the economic motivations of equity investors through four main hypotheses identified in the anomaly’s literature: the tax differential hypothesis, the short-term trading hypothesis, the tick size hypothesis, and the leverage hypothesis. While the U.S. ex-dividend anomaly is well studied, I examine a long data window (1975 to 2010) of Thailand data. The unique structure of the Thai stock market allows me to assess all four main hypotheses proposed in the literature simultaneously. Although I extract the sample data from two data sources, I demonstrate that the combined data are consistently sampled. I further construct three trading strategies: “daily return,” “lag one daily return,” and “weekly return” to alleviate the potential effect of irregular data observation. I find that the ex-dividend day anomaly exists in Thailand, is governed by the tax differential and is driven by short-term trading activities. That is, investors trade heavily around the ex-dividend day to reap the benefits of the tax differential. I find mixed results for the predictions of the tick size hypothesis and results that are inconsistent with the predictions of the leverage hypothesis. I conclude that, on the Stock Exchange of Thailand, juristic and foreign investors can profitably buy stocks cum-dividend and sell them ex-dividend while local investors should engage in short sale transactions. On average, investors who employ the daily return strategy have earned significant abnormal return up to 0.15% (45.66% annualized rate) and up to 0.17% (50.99% annualized rate) for the lag one daily return strategy. Investors can also make a trading profit by conducting the weekly return strategy and earn up to 0.59% (35.67% annualized rate), on average. digital.library.unt.edu/ark:/67531/metadc103283/
- Skiddy Street: Prostitution and Vice in Denison, Texas, 1872-1922
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Prostitution was a rampant and thriving industry in late nineteenth and early twentieth century Texas. Due to the arrival of the M.K. and T. Railroad, the city of Denison became a frontier boomtown and prostitution as well as other vice elements grew alongside the town. Skiddy Street was one road south of Main Street in Denison and housed the most notorious brothels and saloons in the city. In the late nineteenth century, few national laws were present to regulate red-light districts and those that existed were largely ignored. Economically, prostitution was an important addition to the coffers of cities such as Denison, and through taxing and licensing of prostitutes, city leaders profited off of the vice industry. The early decades of the twentieth century led to changes in the toleration of prostitution and red-light districts on the national level. Progressive reform movements, temperance, World War I, and the National Railroad Shopmen’s strike, each contributed to the dissolution of Skiddy Street in Denison as toleration and open acceptance of prostitution waned. This study attempts to understand how and why prostitution thrived during Denison’s early frontier days, who some of the prostitutes were that plied their trade on Skiddy Street, and how national, state, and local changes in the early twentieth century led to the termination of most red-light districts, including Denison’s. digital.library.unt.edu/ark:/67531/metadc103293/
- The Compositional Transformation and Musical Rebirth of Leo Ornstein
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This study focuses on the transformation of Leo Ornstein’s (1893-2002) musical language of his early years into the strikingly different approach found in his later years. Ornstein’s initial radical compositions from the mid-1910s were no doubt representative of the direction in which modern music was moving. Despite the intense fame and notoriety of his early works, Ornstein did not feel connected to the trends of modern music development, and by the end of the 1930s he withdrew from the public scene and turned to teaching. By the 1950s Ornstein had been almost forgotten, and in later life he became a very private person. He worked in almost total isolation composing a substantial amount of music well into his nineties, and died at the age of 109. The music of Ornstein’s “second life” is very different from the initial works of his early years, and most of it is unknown to the public and should be brought into scholarly light, especially since Ornstein has been considered by historians as a pivotal figure in twentieth-century music. This study examines selected music from different stages of Ornstein’s career: Wild Men’s Dance (1913), Suicide in an Airplane (1913), Arabesques (1918), A Long Remembered Sorrow (1964), Piano Sonata No. 7 (1988). A discussion of the selected compositions will provide an understanding of Ornstein’s compositional transformation, and will familiarize musicians and scholars with this widely unknown music. digital.library.unt.edu/ark:/67531/metadc103292/
- Student reflections as artifacts of self-regulatory behaviors for learning: A tale of two courses.
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The rapid growth of online and blended learning environments in both higher education and K-12, along with the development of innovative game based, narrative driven, problem-based learning (PBL) systems known as Alternate Reality Games (AltRG), has led to the need to understand student’s abilities to self-regulate their learning behaviors and practices in these novel environments. This study examines student reflections and e-mails related to self-regulatory practices for learning across two different course designs for an Internet-based course in computer applications. Both designs leverage PBL but apply different levels of abstraction related to content and the need to self-regulate. The study looked specifically at how students communicated about learning across these environments, what student communications indicated about student readiness for university online learning and how instructional design and methods of instruction shaped student expressions of learning and self-regulation. The research design follows an ethnographic and case study approach as two designs and four sections are examined. Data was collected from student blog posts, email messages and semi-structured interviews. Atlas.TI was used to code the data using constant comparative analysis. A sequential analysis was applied using an a priori structure for self-regulation and post hoc analysis for emergent codes that resulted in the following categories: distraction, group experience, motivation, emotion, prior experiences, and time. Results indicated qualitative differences between the two designs related to student communications for learning and self-regulation. Findings were reported for both the a priori and post hoc analysis. Additionally, two major findings are reported as emerging themes. These are presented and discussed as The Expectation Gap and Different Designs, Different Outcomes. digital.library.unt.edu/ark:/67531/metadc103291/
- Investigating the Extractive Summarization of Literary Novels
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Abstract
Due to the vast amount of information we are faced with, summarization has become a critical necessity of everyday human life. Given that a large fraction of the electronic documents available online and elsewhere consist of short texts such as Web pages, news articles, scientific reports, and others, the focus of natural language processing techniques to date has been on the automation of methods targeting short documents. We are witnessing however a change: an increasingly larger number of books become available in electronic format. This means that the need for language processing techniques able to handle very large documents such as books is becoming increasingly important. This thesis addresses the problem of summarization of novels, which are long and complex literary narratives. While there is a significant body of research that has been carried out on the task of automatic text summarization, most of this work has been concerned with the summarization of short documents, with a particular focus on news stories. However, novels are different in both length and genre, and consequently different summarization techniques are required. This thesis attempts to close this gap by analyzing a new domain for summarization, and by building unsupervised and supervised systems that effectively take into account the properties of long documents, and outperform the traditional extractive summarization systems typically addressing news genre. digital.library.unt.edu/ark:/67531/metadc103298/
- Quantitative EEG Analysis of Patients with Chronic Pain: An Exploratory Study
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This study examined quantitative EEGs of six individuals with chronic pain and compared them to an age- and gender-matched normative database of healthy control subjects in an attempt to discern whether a particular pattern of resting state EEG activity is associated with chronic pain. In the chronic pain group, significantly reduced absolute power was seen in delta and theta bandwidths at frontal sites in the eyes-closed condition. In the eyes-open condition, significantly reduced absolute power was seen in delta, theta, and alpha bandwidths at frontal, central, and temporal sites, and increased relative high beta power was seen in the parietal region. Reduced theta/high beta and delta/high beta ratios were seen in the parietal region. Quantitative EEG neuromarkers of chronic pain are suggested. digital.library.unt.edu/ark:/67531/metadc103294/
- The “Nigger Trinity”: Engaging the Discourse in Post Civil Rights/Post 1960s America
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The cultural and popular media landscape of the United States of America changed after the Civil-Rights movement of the 1960s. The word “Nigger” was changed during that same period of American history. There are several authors and a comic that helped change this word during the 1960s. The post Civil-Rights American has a different experience and understanding with this word than those born before 1970. This work triangulates the current cultural location of the word “Nigger,” “nigga,” and “the n-word” using linguistics, law, and two media case studies. The “Nigger” trinity is a model that adds value to the discourse that surrounds this one word in post civil-rights/post 1960s America. digital.library.unt.edu/ark:/67531/metadc103290/
- Assessment of transportation emissions for ferrous scrap exports from the United States: Activity-based maritime emissions model and theoretical inland transportation model.
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Industrial ecology is a field of study that encourages the use of closed-loop material cycles to achieve sustainability. Loop closing requires the movement of materials over space, and has long been practiced in the iron and steel industry. Iron and steel (ferrous) scrap generated in the U.S. is increasingly exported to countries in Asia, lengthening the transportation distance associated with closing the loop on the iron and steel life cycle. In order to understand the environmental cost of transporting this commodity, an activity-based maritime transportation model and a theoretical in-land transportation model are used to estimate emissions generated. Results indicate that 10.4 mmt of total emissions were generated, and emissions increased by 136 percent from 2004 to 2009. Increases in the amount of emissions generated are due to increases in the amount of scrap exported and distance it is transported. digital.library.unt.edu/ark:/67531/metadc103296/
- Lone Star Booster: The Life of Amon G. Carter
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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/
- Patronage, Connoisseurship and Antiquarianism in Georgian England: The Fitzwilliam Music Collection (1763-1815)
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In eighteenth-century Britain, many aristocrats studied music, participated as amateurs in musical clubs, and patronized London’s burgeoning concert life. Richard Fitzwilliam, Seventh Viscount Fitzwilliam of Merrion and Thorncastle (1745-1816), was one such patron and amateur. Fitzwilliam shaped his activities – participation, patronage, and collecting – in a unique way that illustrates his specialized tastes and interests. While as an amateur musician he sang in the Noblemen’s and Gentlemen’s Catch Club (the premiere social club dedicated to musical performance), he rose to the highest level of patronage by spearheading the Handel Commemoration Festival of 1784 and serving for many years as a Director of the Concert of Antient Music, the most prestigious concert series in Georgian Britain. His lasting legacy, however, was his bequest to Cambridge University of his extensive collection of art, books and music, as well as sufficient funds to establish the Fitzwilliam Museum. At the time of his death, Fitzwilliam’s collection of music was the best in the land, save that in the Royal Library. Thus, his collection is ideally suited for examination as proof of his activities, taste and connoisseurship. Moreover, the music in Fitzwilliam’s collection shows his participation in the contemporary musicological debate, evidenced by his advocacy for ancient music, his agreement with the views of Charles Avison and his support for the music of Domenico Scarlatti. On one side of this debate were proponents of learned, ancient music, such as Fitzwilliam and Avison, whose Essay on Musical Expression of 1752 was a milestone in musical criticism. On the other side of the discussion were advocates for the more modern, “classical” style and genres, led by historian Charles Burney. digital.library.unt.edu/ark:/67531/metadc103327/
- An Examination Of Three Texas High SchoolsÊ Restructuring Strategies That Resulted In An Academically Acceptable Rating
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This study examined three high schools in a large urban school district in Texas that achieved an academically acceptable rating after being sanctioned to reconstitute by state agencies. Texas state accountability standards are a result of the No Child Left Behind Act of 2011 (NCLB). Texas state law requires schools to design a reconstitution plan after the second year of receiving an academically unacceptable school rating for failing to meet the required standards on state assessments, dropout rates, and graduation rates. The plan must be implemented by the third year. A mixed methods approach was used to uncover the strategies that were successful during the restructuring initiative. Data was obtained from three sources: interviews, document analysis and surveys. Interviews were conducted with district administrators, campus based administrators and teachers of the three high schools. A sample of core content teachers were surveyed using questions from the MetLife Survey of the American Teacher: Collaborating for Student Success. Results revealed that each school chose to engage in a major form of restructuring that included the formation of a themed based magnet school. A team approach was used to devise, implement, and monitor the reconstitution plan. Common strategies unveiled in the study included the use of common assessments, collaborative planning among core teachers, professional development, continuous monitoring of student absences, extended learning times for students, and a focus on college readiness. Survey data revealed that the majority of teachers believed that collaboration positively impacted student achievement. It is recommended that schools undergoing restructuring choose a reconstitution option that allows for flexibility, use multiple resources to foster school improvement, and develop restructuring plans that serve as living documents. Further research is needed to study the principal's role in achieving an academically acceptable rating. This study could also be expanded to compare restructuring strategies of high schools across the country that has been forced by federal mandates to reconstitute. digital.library.unt.edu/ark:/67531/metadc103357/
- Rehlet Iraqi (An Iraqi Journey)
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Rehlet Iraqi was created to depict an Iraqi refugee family’s struggle after fleeing war-torn Iraq. Their struggle is highlighted with hope and high expectations for a better life within the United States. This film emphasizes the toll that emigration has on the life of a family before and after their arrival to Grand Rapids, Michigan. digital.library.unt.edu/ark:/67531/metadc103406/
- Comparative Analysis Of 105 Higher Education Doctoral Programs In The United States
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The mission types of 105 current doctoral programs in higher education and the extent to which their missions have changed since a similar study was conducted by Dressel and Mayhew in 1974 was studied. The curricula offerings of these programs by degree type (e.g., Ed.D. & Ph.D.) were compared with Fife’s 1991 findings. Finally, the study examined the various modes of instruction (e.g., classroom, online, cohort, blended) these programs utilize. The population was the 131 U.S. higher education doctoral program coordinators or directors who were identified using the ASHE Higher Education Program Directory. A total of 46 hosted Ed.D. programs and 59 hosted Ph.D. programs for a combined total of 105 doctoral programs. An electronic survey, developed by utilizing an expert panel and the cognitive interviewing technique, was sent to each participant. A total of 46 hosted Ed.D. programs and 59 hosted Ph.D. programs for a combined total of 105 doctoral programs. A total of 77 institutions (59%) returned usable questionnaires, and six other universities (5%) indicated their doctoral higher education programs no longer existed. Twenty-three of the responding institutions identified with a research-focused mission; 25 institutions identified with a practitioner-based mission; and 28 institutions identified with both types of missions. Pearson r correlation analysis revealed no statistically significant relationship between degree type and course offerings (r = .123, p = .05). However, ? 2 revealed that, compared to Ed.D. programs, Ph.D. programs enrolled significantly more full-time students (? 2 (3) = 14.504, p < .05). Through further analysis, a core of nine courses emerged for more than 75% of all higher education doctoral programs. Those courses are general administration of higher education, finance of higher education, legal studies, history of higher education, philosophy and theoretical foundations of higher education, teaching/learning in higher education, student affairs administration, college student research, and a dissertation seminar. Nearly 80% of all doctoral programs utilize some form of alternate delivery method (e.g., online, cohort, blended) in addition to traditional classroom instruction. Furthermore, Ph.D. programs employ larger full-time faculties, conduct more research, obtain more external funding, and publish more scholarship than Ed.D. programs. digital.library.unt.edu/ark:/67531/metadc103404/
- Temporal Properties Of Dynamic Processes On Complex Networks
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Many social, biological and technological systems can be viewed as complex networks with a large number of interacting components. However despite recent advancements in network theory, a satisfactory description of dynamic processes arising in such cooperative systems is a subject of ongoing research. In this dissertation the emergence of dynamical complexity in networks of interacting stochastic oscillators is investigated. In particular I demonstrate that networks of two and three state stochastic oscillators present a second-order phase transition with respect to the strength of coupling between individual units. I show that at the critical point fluctuations of the global order parameter are characterized by an inverse-power law distribution and I assess their renewal properties. Additionally, I study the effect that different types of perturbation have on dynamical properties of the model. I discuss the relevance of those observations for the transmission of information between complex systems. digital.library.unt.edu/ark:/67531/metadc103403/
- Baroque Elements In The Piano Sonata, Opus 9 By Paul Creston
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Paul Creston (1906-1985) was one of the most significant American composers from the middle of the twentieth century. Though Creston maintained elements of the nineteenth-century Romantic tradition and was categorized as a “Neo-Romantic” or “20th-century traditionalist,” many of Creston’s compositions contain elements of Baroque music. His Piano Sonata, Opus 9 provides significant examples of Baroque elements, while already foreshadowing his mature style. The purpose of this study is to explore Baroque elements in the compositional language of Paul Creston’s Piano Sonata, Opus 9. All four movements of the Piano Sonata will be examined in regards to its stylistic features associated with Baroque practices. These features mainly consist of rhythm, texture, imitative writing, and repeated phrase structure. Each category of the study will include comparisons of Domenico Scarlatti’s keyboard sonatas with Creston’s sonata. Through an examination of the Piano Sonata and its Baroque elements, this study hopes to inspire renewed interest in the work among musicians and to help the performer give a more stylistically coherent, and accurate, performance. digital.library.unt.edu/ark:/67531/metadc103407/
- The Role Of The Piccolo In Beethoven's Orchestration
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This dissertation discusses the role of the piccolo in Beethoven’s orchestration in his symphonic works. These include the Fifth Symphony, the Sixth Symphony, the Egmont Overture and the Ninth Symphony. The document includes the history of piccolo’s development since the ninth century B.C. until the modern Boehm piccolo. The author provides comparative observation through Beethoven’s orchestration techniques such as the range covered, instrumental pairing, balance, and melodic organization of each symphony works. In addition to discussing development of the piccolo in orchestration, this study compares the piccolo’s usage through motives (e.g. the “Ode to Joy” theme), harmonic analysis; range; balance; and melodic organization. Appendix A provides of tables that summarize piccolo’s harmonic function of works discussed to help the reader comprehend the piccolo function at a glance. This dissertation includes observations of performers, theorists and musicians; and these guides provide the reader with better understanding of the piccolo’s place in Beethoven’s orchestration. By following the observations, piccolo players will bring a deeper musical and technical understanding to individual performances. digital.library.unt.edu/ark:/67531/metadc103400/
- Texas Middle School Choral Directors’ Beliefs About Repertoire Selection
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Secondary choral directors often demonstrate a wide variety of organizational, instructional, and musical skills to promote and nurture thriving programs. Among the many tasks executed, choosing repertoire might be viewed as one of the most important duties performed. Material chosen for study is often the vehicle through which curricular concepts are taught. Multiple factors might influence middle school choral directors’ beliefs about repertoire choices. Ironically, repertoire choices might or might not reflect educators’ actual teaching philosophies; nevertheless, these decisions could influence student learning. This study surveyed a stratified random sampling of Texas middle school choral directors who participated in the 2010 University Interscholastic League Concert and Sight-reading competition (n = 209). Seventy middle school choral directors participated in the study. Each director took an online survey and indicated the degree to which they agreed or disagreed with 14 statements concerning repertoire choice. Many of the belief statements showed teachers were overwhelmingly in concordance with their beliefs (92.9%). Results indicated that beliefs were similar, regardless of who chose the curriculum or the amount of discussion perceived in undergraduate training. The only belief statement that continually showed differences between teachers concerned students’ ability to vote on repertoire. digital.library.unt.edu/ark:/67531/metadc103409/
- Exploring Hidden Student Perceptions About College-going Culture At House Bill 400 Schools In The Dallas Fort Worth Metroplex
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In accordance with the Texas Higher Education Coordinating Boards’ Closing the Gaps by 2015, this research study analyzed self-reported perceptions about college-going culture from students (n = 151) who attended four House Bill 400 schools serving Latino and African American communities in the Dallas-Fort Worth Metroplex. This study utilized exploratory factor analysis (EFA) with a maximum likelihood extraction technique to identify hidden perceptions (latent factors) that account for common variance among student perceptions about college-going culture. The study also tested the validity and inter-item reliability of the 15-item College-Going Culture Survey used in data collection. The parallel analysis, EFA, and Cronbach’s ? identified two latent factors of Verified College Potential (? = .70) and College Capital Awareness (? = .71) that, together, explained 40.1% of students’ perceptions. The two factors were non-significantly negatively correlated (r = -.495, p = .354). By utilizing the two latent constructs, a 10-item revised College-Going Culture Survey is recommended to improve the inter-item reliability coefficient from ? = .46 to ? = .77. Descriptive statistics revealed that Latino and African-American students affirmed aspects of the college-going culture at HB 400 schools. However, latent factors suggest the possibility that students who reportedly feel most encouraged to attend college (Verified College Potential) may tend to be least aware of the actual logistics of college such as admissions processes and financial aid (College Capital Awareness) and that, conversely, those with the most logistical knowledge may tend to feel least encouraged. digital.library.unt.edu/ark:/67531/metadc103410/
- Factors Affecting Faculty Use Of Learning Object Repositories: An Exploratory Study Of Orange Grove And Wisc-online
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The purpose of this study was to identify factors that motivate or impede faculty use of learning object repositories (LORs). The unified theory of acceptance and use of technology (UTAUT) served as the theoretical framework for this study. Both quantitative and qualitative approaches were used in the study to explore two research questions relating to factors affecting faculty use of LORs. Research subjects were faculty and instructional staff users from two LORs: Orange Grove and Wisc-Online. This study was a two-phase design study. In Phase I, I conducted 13 interviews and analyzed data by a content analysis method. Phase II of the study was designed based on the results of Phase I. I collected data by a survey instrument from 38 respondents and analyzed the data by descriptive statistics and analysis of variance in Phase II. The results of the study indicated 22 factors as motivators for faculty use of LORs and 13 factors as barriers for faculty use of LORs. The study is the first to identify factors affecting faculty use of LORs from actual faculty users’ perspectives based on UTAUT. The study’s findings contribute to understanding the reasons that faculty use or do not use LORs and provide foundations for designing strategies to increase faculty use of LORs. digital.library.unt.edu/ark:/67531/metadc103412/
- The Klezmer Influence in Paul Schoenfield’s Klezmer Rondos
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Access: Use of this item is restricted to the UNT Community.
Paul Schoenfield’s Klezmer Rondos is a work for flute, male vocalist, and orchestra revised in 1994 according to the score given to me by the composer. A review of current research in klezmer heritage music is the starting point to place Klezmer Rondos in the context of art music infused with klezmer flavor. Klezmer music can be defined as the instrumental folk music of Eastern European Jews, however because of its adaptability and quality of assimilating other cultures within it, this heritage music is constantly in flux. By looking at the research in this field, I describe how the sound of klezmer music has evolved and how popular notions have been formed. The body of this research explores the main musical aspects of Klezmer Rondos that can be tied to the klezmer tradition: scales and thematic materials, improvisatory elements, ornamentation, and instrumentation. Klezmer Rondos moves beyond a simple arrangement of vernacular music for orchestra; it is a fusion of contemporary art music with the elements of klezmer style. digital.library.unt.edu/ark:/67531/metadc103401/
- James (Santa Fe) Galloway’s Alabado And The Musical Traditions Of The Penitentes
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This dissertation explores the musical traditions of the Penitentes of New Mexico and how these traditions influenced James (Santa Fe) Galloway’s Alabado for soprano, alto flute, and piano. Due to geographical isolation and religious seclusion the music of the Penitential Brotherhood is not well known outside of these New Mexican communities. The focus of this study, as pertaining to the music of the Penitentes, is the alabado “Por el rastro de la cruz,” and the pito, a handmade wooden flute. Included in this paper are transcriptions of pito melodies performed by Vicente Padilla, Cleofes Vigil, Emilio Ortiz, and Reginald Fisher, which have been transcribed by John Donald Robb, William R. Fisher, Reginald Fisher, and Rebecca Weidman-Winter. Few resources are available on Galloway or Alabado, an unpublished work, yet the popularity of this piece is apparent from the regular performances at the National Flute Association Conventions and by flutists throughout the United States. This paper represents a significant contribution to the study of Alabado, the composer, and how this composition reflects the music, history, and people of New Mexico. digital.library.unt.edu/ark:/67531/metadc103408/
- Validation Of The Facet Satisfaction Scale (Fss): An Evaluative Approach To Assessing Facet Job Satisfaction
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Job satisfaction has, and continues to be an important construct of interest to researchers and practitioners alike. However, conflicting operational definitions and inconsistent measurement systems have reduced the efficacy of the construct in predicting important job-related outcomes for organizations and their employees. The Facet Satisfaction Scale (FSS) was designed to overcome these deficiencies by creating a facet-based measure that assesses job satisfaction in accordance with recent definitions of the construct. Reliability and validity analyses were conducted on both the complete and shortened version of the scale. The FSS exhibited evidence of reliability (ranging from .52 to .93 for the shortened FSS, and .53 to .96 for the complete FSS). Evidence of scale validity was also obtained through the use of construct, content, and criterion-related validity measures. Implications of the study on future research on job satisfaction are discussed. digital.library.unt.edu/ark:/67531/metadc103414/
- The “Dallas Way” in the Gayborhood: The Creation of a Lesbian, Gay, Bisexual, and Transgender Community in Dallas, Texas, 1965-1986
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This thesis describes the creation of the gay and lesbian community in Dallas, the fourth largest metropolitan area in the United States. Employing more than seventy-five sources, this work chronicles the important contributions the gay men and lesbians of Dallas have made in the struggle for gay civil rights. This thesis adds to the studies of gay and lesbian history by focusing on a region of the United States that has been underrepresented, the South. In addition, this work addresses the conflicts that arise within the community between men and women. digital.library.unt.edu/ark:/67531/metadc103411/
- Biodegradable Poly(hydroxy Butyrate-co-valerate) Nanocomposites And Blends With Poly(butylene Adipate-co-terephthalate) For Sensor Applications
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The utilization of biodegradable polymers is critical for developing “cradle to cradle” mindset with ecological, social and economic consequences. Poly(hydroxy butyrate-co-valerate) (PHBV) shows significant potential for many applications with a polypropylene equivalent mechanical performance. However, it has limitations including high crystallinity, brittleness, small processing window, etc. which need to be overcome before converting them into useful products. Further the development of biodegradable strain sensing polymer sensors for structural health monitoring has been a growing need. In this dissertation I utilize carbon nanotubes as a self sensing dispersed nanofiller. The impact of its addition on PHBV and a blend of PHBV with poly(butylene adipate-co-terephthalate) (PBAT) polymer was examined. Nanocomposites and blends of PHBV, PBAT, and MWCNTs were prepared by melt-blending. The effect of MWCNTs on PHBV crystallinity, crystalline phase, quasi-static and dynamic mechanical property was studied concurrently with piezoresistive response. In PHBV/PBAT blends a rare phenomenon of melting point elevation by the addition of low melting point PBAT was observed. The blends of these two semicrystalline aliphatic and aromatic polyesters were investigated by using differential scanning calorimetry, small angle X-ray scattering, dynamic mechanical analysis, surface energy measurement by contact angle method, polarized optical and scanning electron microscopy, and rheology. The study revealed a transition of immiscible blend compositions to miscible blend compositions across the 0-100 composition range. PHBV10, 20, and 30 were determined to be miscible blends based on a single Tg and rheological properties. The inter-relation between stress, strain, morphological structure and piezoresistive response of MWCNT filled PHBV and PHBV/PBAT blend system was thoroughly investigated. The outcomes of piezoreistivity study indicated MWCNT filled PHBV and PHBV/PBAT blend system as a viable technology for structural health monitoring. Finally, the compostability of pure polymer, blend system, and MWCNT filled system was studied indicating that PBAT and CNT decreased the biodegradability of PHBV with CNT being a better contributor than PBAT. digital.library.unt.edu/ark:/67531/metadc103405/
- Diffusion Of Location Based Services And Targeting Us Hispanics: A Case Study
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This study reviews factors that identify U.S. Hispanics as being an ideal target market for adopting Location Based Services (LBS). By using the diffusion of innovation theory, an observed pattern of Hispanics’ adoption of technology, advertisements, smartphones and various smartphone value-added services reveals U.S. Hispanics to be more likely to adopt LBS than non-Hispanics. The study also identifies the top U.S. cell phone wireless providers and analyzes their marketing position towards U.S. Hispanics. AT&T, Sprint, T-Mobile and Verizon are noted as marketing their services to U.S. Hispanics via in-culture messages and campaigns. The four wireless providers also utilize LBS as a profitable tool and market LBS to their customers, regardless of ethnicity. digital.library.unt.edu/ark:/67531/metadc103415/
- The Failed Bombing Offensive: A Reexamination Of The Combined Bomber Offensive In 1943
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For decades nations have debated how to successfully employ air power. In 1943 the United States and Great Britain launched a massive strategic bombing campaign against Germany. The two sides agreed to a flawed plan due to the fundamental differences on bombing doctrine. As a result, the campaign was fraught with issues that remained largely unresolved in 1943. Without a clearly defined plan, the Allies were unable to determine which commands or targets received priority throughout the offensive. This ultimately led to a confused and unfocused campaign. High losses and inconclusive results derailed the American bombing effort. By November, the two sides agreed that the entire bombing offensive was either behind schedule or had failed entirely. digital.library.unt.edu/ark:/67531/metadc103402/
- Interfacial Electrochemistry of Copper and Spectro-Electrochemical Characterization of Oxygen Reduction Reaction
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The first part of this dissertation highlights the contents of the electrochemical characterization of Cu and its electroplating on Ru-based substrates. The growth of Ru native oxide does diminish the efficiency of Cu plating on Ru surface. However, the electrochemical formed irreversible Ru hydrate dioxide (RuOxHy) shows better coverage of Cu UPD. The conductive Ru oxides are directly plateable liner materials as potential diffusion barriers for the IC fabrication. The part II of this dissertation demonstrates the development of a new rapid corrosion screening methodology for effective characterization Cu bimetallic corrosion in CMP and post-CMP environments. The corrosion inhibitors and antioxidants were studied in this dissertation. In part III, a new SEC methodology was developed to study the ORR catalysts. This novel SEC cell can offer cheap, rapid optical screening results, which helps the efficient development of a better ORR catalyst. Also, the SEC method is capable for identifying the poisoning of electrocatalysts. Our data show that the RuOxHy processes several outstanding properties of ORR such as high tolerance of sulfation, high kinetic current limitation and low percentage of hydrogen peroxide. digital.library.unt.edu/ark:/67531/metadc103416/
- Exploration Of Energy And Area Efficient Techniques For Coarse-grained Reconfigurable Fabrics
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Coarse-grained fabrics are comprised of multi-bit configurable logic blocks and configurable interconnect. This work is focused on area and energy optimization techniques for coarse-grained reconfigurable fabric architectures. In this work, a variety of design techniques have been explored to improve the utilization of computational resources and increase energy savings. This includes splitting, folding, multi-level vertical interconnect. In addition to this, I have also studied fully connected homogeneous and heterogeneous architectures, and 3D architecture. I have also examined some of the hybrid strategies of computation unit’s arrangements. In order to perform energy and area analysis, I selected a set of signal and image processing benchmarks from MediaBench suite. I implemented various fabric architectures on 90nm ASIC process from Synopsys. Results show area improvement with energy savings as compared to baseline architecture. digital.library.unt.edu/ark:/67531/metadc103413/
- A Survey of the Interests of Children in the Sixth Grade and a Suggested Program of Work Based upon These Interests
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The dual purpose of this study is to survey the interests of boys and girls who are in the sixth grade and to suggest a program of school work based upon these interests. The writer presents the study with the hope that it will contribute to a better understanding of what children's interests are and the part they should play in planning the curriculum and complete school program. digital.library.unt.edu/ark:/67531/metadc70334/
- The Taxonomic Significance of the Foliar Epidermal Hairs of Several Families of Dicotyledons
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The present investigation deals with the study of non-glandular epidermal hairs from the leaves of two hundred representative dicotyledons of forty-eight families in the Central North Texas area. Special attention has been given to the Compositae and Leguminosae in an effort to find a possible correlation between epidermal hair morphology and the taxonomic position of the plants concerned. digital.library.unt.edu/ark:/67531/metadc75407/
- Evaluating a Junior High School Program in Relation to Purposes
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This is a comparative study of the sixth, seventh, and eighth grades in the Gainesville Junior High School, Gainesville, Texas, to determine the relative progress in meeting the purposes of education in an American democracy, as outlined by the Policies Commission of the National Education Association. This study is made for the purpose of ascertaining the progress made to date in the Gainesville Junior High School and for use as a guide in improving its educational standards in line with the recommendations of the National Educational Policies Commission. digital.library.unt.edu/ark:/67531/metadc75316/
- A Comparative Study of Some Physical, Intellectual, and Personality Factors of Groups Entering the Waco State Home at Different Ages and on Different Dates
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The problem in this study is to make a comparison of some physical, intellectual, and personality factors of groups of children entering the Waco State Home at different ages and on different dates. digital.library.unt.edu/ark:/67531/metadc75318/
- History of the Growth of Art Interest in Texas in the Last Two Decades
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Texas has only recently taken an active interest in developing the fine arts as an important aspect of her culture. With the discovery of vast oil fields in Texas, an era of prosperity ensued that brought about rapid growth in population and wealth. digital.library.unt.edu/ark:/67531/metadc75321/
- An Evaluation of Distributive Education in Texas
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This study was made in an effort to evaluate the need in Texas for Distributive Education--a vocational education for workers in distributive occupations. By the term, distributive occupation, is meant an occupation in which workers are employed in the commercial exchanges necessary for making available to consumers the goods and services produced by others. digital.library.unt.edu/ark:/67531/metadc75319/
