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  Partner: UNT Libraries
 Decade: 2010-2019
 Collection: UNT Theses and Dissertations
A Characterization Of Jackson Blue Spring, Jackson County, Florida
Jackson Blue is a first magnitude spring in the karst terrane of northeast Florida. Previous studies have identified inorganic fertilizer as the source of high nitrate levels in the spring. Agricultural land use and karst vulnerability make Jackson Blue a good model for conservation concerns. This work offers an aggregation of studies relating to the springshed, providing a valuable tool for planning and conservation efforts in the region. An analysis of nitrate levels and other water quality parameters within the springshed did not reveal significantly different values between agricultural and forested land use areas. Confounding factors include: high transmissivity in the aquifer, interspersed land use parcels, and fertilizer application in forested areas due to commercial pine stand activity. digital.library.unt.edu/ark:/67531/metadc103381/
Characterization of Novel Solvents and Absorbents for Chemical Separations
Predictive methods have been employed to characterize chemical separation mediums including solvents and absorbents. These studies included creating Abraham solvation parameter models for room-temperature ionic liquids (RTILs) utilizing novel ion-specific and group contribution methodologies, polydimethyl siloxane (PDMS) utilizing standard methodology, and the micelles cetyltrimethylammonium bromide (CTAB) and sodium dodecylsulfate (SDS) utilizing a combined experimental setup methodology with indicator variables. These predictive models allows for the characterization of both standard and new chemicals for use in chemical separations including gas chromatography (GC), solid phase microextraction (SPME), and micellar electrokinetic chromatography (MEKC). Gas-to-RTIL and water-to-RTIL predictive models were created with a standard deviation of 0.112 and 0.139 log units, respectively, for the ion-specific model and with a standard deviation of 0.155 and 0.177 log units, respectively, for the group contribution fragment method. Enthalpy of solvation for solutes dissolved into ionic liquids predictive models were created with ion-specific coefficients to within standard deviations of 1.7 kJ/mol. These models allow for the characterization of studied ionic liquids as well as prediction of solute-solvent properties of previously unstudied ionic liquids. Predictive models were created for the logarithm of solute's gas-to-fiber sorption and water-to-fiber sorption coefficient for polydimethyl siloxane for wet and dry conditions. These models were created to standard deviations of 0.198 and 0.122 logunits for gas-to-PDMS wet and dry, respectively, as well as 0.164 and 0.134 log units for water-to-PDMS wet and dry, respectively. These models are particularly useful in solid phase microextraction separations. Micelles were studied to create predictive models of the measured micelle-water partition coefficient as well as models of measured MEKC chromatographic retention factors for CTAB and SDS. The resultant predictive models were created with standard deviations of 0.190 log units for the logarithm of the mole fraction concentration of water-to-CTAB, 0.171 log units for the combined logarithms of both the mole fraction concentration of water-to-CTAB and measured MEKC chromatographic retention factors for CTAB, and 0.153 log units for the combined logarithms of both the mole fraction concentration of water-to-SDS and measured MEKC chromatographic retention factors for SDS. digital.library.unt.edu/ark:/67531/metadc67989/
Characterization of Triclocarban, Methyl- Triclosan, and Triclosan in Water, Sediment, and Corbicula Fluminea (Müller, 1774) Using Laboratory, in Situ, and Field Assessments
In the last decade emerging contaminants research has intensified in a bid to answer questions about fate, transport, and effects as these chemicals as they get released into the environment. The chemicals of interest were the antimicrobials; triclocarban (TCC) and triclosan (TCS), and a metabolite of triclosan, methyl triclosan (MTCS). This research was designed to answer the question: what is the fate of these chemicals once they are released from the waste water treatment plant into receiving streams. Three different assessment methods; field monitoring, in-situ experiments, and laboratory studies were used to answer the overall question. TCS, TCC, and MTCS levels were measured in surface water, sediment and the Asiatic clam Corbicula fluminea. Field studies were conducted using four sites at Pecan Creek, Denton TX. Levels of all three chemicals in clams were up to fives orders of magnitude the water concentrations but an order of magnitude lower than in sediment. Highest sediment levels of chemicals were measured in samples from the mouth of Pecan Creek (highest organic matter). TCC was the most and TCS was the least accumulated chemicals. In-situ and lab studies both indicated that uptake of these chemicals into the clams was very rapid and measurable within 24hours of exposure. The after clams were transferred into clean water most of the compounds were depurated within 14 days. digital.library.unt.edu/ark:/67531/metadc67978/
Characterization of Viscoelastic Properties of a Material Used for an Additive Manufacturing Method
Recent development of additive manufacturing technologies has led to lack of information on the base materials being used. A need arises to know the mechanical behaviors of these base materials so that it can be linked with macroscopic mechanical behaviors of 3D network structures manufactured from the 3D printer. The main objectives of my research are to characterize properties of a material for an additive manufacturing method (commonly referred to as 3D printing). Also, to model viscoelastic properties of Procast material that is obtained from 3D printer. For this purpose, a 3D CAD model is made using ProE and 3D printed using Projet HD3500. Series of uniaxial tensile tests, creep tests, and dynamic mechanical analysis are carried out to obtained viscoelastic behavior of Procast. Test data is fitted using various linear and nonlinear viscoelastic models. Validation of model is also carried out using tensile test data and frequency sweep data. Various other mechanical characterization have also been carried out in order to find density, melting temperature, glass transition temperature, and strain rate dependent elastic modulus of Procast material. It can be concluded that melting temperature of Procast material is around 337°C, the elastic modulus is around 0.7-0.8 GPa, and yield stress is around 16-19 MPa. digital.library.unt.edu/ark:/67531/metadc407787/
Characterizing Noise and Harmonicity: The Structural Function of Contrasting Sonic Components in Electronic Composition
This dissertation examines the role of noise in shaping the form of several recent musical compositions. This study demonstrates how the contrast of noisy sounds and harmonic sounds can impact the structure of compositions. Depending on context, however, the specific use and function of noise can vary substantially from one work to the next. The first portion of this paper describes methods for quantifying noise content using FFT analysis procedures. A number of tests on instrumental and synthetic sound sources are described in order to demonstrate how the analysis system may react to certain sounds. The second part of this document consists of several analyses of whole musical works. Works for acoustic instruments are examined first, followed by works for electronic media. During these analyses, it becomes clear that while the use of noise in each work is based largely upon context, some common patterns do exist across different works. The final portion of the paper examines an original work which was written with the function of noise specifically in mind. The original work is put through the same analysis procedures as works seen earlier in the paper, and some conclusions are drawn regarding both the possibilities and limitations of noise analysis as a compositional tool. digital.library.unt.edu/ark:/67531/metadc30427/
Charlotte Perkins Gilman: Naturalist Playwright
This study explores Charlotte Perkins Gilman’s use of the dramatic form to challenge Herbert Spencer’s social Darwinism by offering feminist adaptations of Darwin’s theories of natural and sexual selection. As she does in her career-defining manifesto, Women & Economics (1898), Gilman in her lesser-known plays deploys her own brand of reform Darwinism to serve the feminist cause. Despite her absence in histories of modern drama, Gilman actively participated in the establishment and development of this literary, historical, and cultural movement. After situating Gilman in the context of nineteenth-century naturalist theater, this thesis examines two short dramatic dialogues she published in 1890, “The Quarrel,” and “Dame Nature Interviewed,” as well as two full-length plays, Interrupted (1909) and the Balsam Fir (1910). These plays demonstrate Gilman’s efforts to use the dramatic form in her early plays to “rehearse” for Women & Economics, and in her later drama, to “stage” the theories she presents in that book. digital.library.unt.edu/ark:/67531/metadc115172/
Child-Parent Relationship Therapy (CPRT) with Adoptive Families: Effects on Child Behavior, Parent-Child Relationship Stress, and Parental Empathy
This randomized controlled study is a preliminary investigation on the effects of Child-Parent Relationship Therapy (CPRT) with 61 adoptive parents. The participants in this study identified themselves as the following: 54 European American, 3 Black American, 3 Hispanic/Latino, and 1 individual who chose not to indicate ethnicity. The study included 23 couples and 15 individual mothers. The CPRT is a structured, time limited approach that trains caregivers to be an active participant as a therapeutic change agent in their child's life. Results from a two (group) by two (measures) split plot ANOVA indicated that adoptive parents who participated in 10 weeks of CPRT reported statistically significant decreases in child behavior problems and parent child-relationship stress. Statistically significant increases in parent empathy were also reported by raters blinded to the study. CPRT demonstrated a medium to large treatment effect on reducing children's behavior problems and parent-child relationship stress. In addition, CPRT demonstrated a large treatment effect on increasing parental empathy. The results of the study provide preliminary support for CPRT as a responsive intervention for adoptive parents and their children. digital.library.unt.edu/ark:/67531/metadc28403/
Child Rescue As Survival Resistance: Hidden Children in Nazi-occupied Western Europe
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The phenomenon of rescue organizations that devoted themselves specifically to hiding and saving Jewish children appeared throughout Nazi-occupied Western Europe (France, Belgium, and the Netherlands). Jewish and non-Jewish rescuers risked their lives to save thousands of children from extermination. This dissertation adds to the historiographical understanding of Holocaust resistance by analyzing the efforts of these child rescue organizations as a form of “survival resistance.” Researching the key aspects of traditional resistance (conscious intent, extensive organization, and effective turn-out) demonstrates that, while child rescue did not present armed resistance, it still was a form of active resistance against the Nazi Final Solution. By looking at rescuers’ testimonies and archival sources (from Yad Vashem, United States Holocaust Memorial Museum, Centre de documentation juive contemporaine, and Kazerne Dossin), this dissertation first outlines the extensive organization and intent of Jewish rescue groups, such as the Oeuvre de Secours aux Enfants (OSE) and Comité de défense des Juifs (CDJ), in France, Belgium, and the Netherlands. The second part looks at rescue organization and intent by Catholic, Protestant, and humanitarian groups. The dissertation concludes by discussing the effectiveness of organized child rescue. In the end, the rescue groups saved thousands of children and proofs that Child rescue in Nazi-occupied Western Europe was a valid--not to mention heroic--form of survival resistance. digital.library.unt.edu/ark:/67531/metadc149581/
Child Teacher Relationship Training As a Head Start Early Mental Health Intervention for Children Exhibiting Disruptive Behavior: an Exploratory Study
This exploratory study examined the effectiveness of child teacher relationship training (CTRT) with at-risk preschool children exhibiting disruptive behavior. The participants included a total of 23 Head Start teachers and their aides, and children identified by their teachers as exhibiting clinical or borderline levels of externalizing behavior problems. Teacher participants included 22 females and 1 male; demographics were reported as 56% Hispanic ethnicity, 17% Black American, and 22% European American. Child participants included 15 males and 5 females; demographics were reported as 60% Hispanic, 30% Black American, and 10% European American. A 2 by 3 (Group x Repeated Measures) split plot ANOVA was used to analyze the data. According to teacher reports using the Teacher Report Form (C-TRF) and blinded raters’ reports using the Direct Observation Form (DOF) to assess disruptive behaviors, children whose teachers received the CTRT intervention demonstrated statistically significant decreases (p < .05) in externalizing behaviors on the C-TRF and total problems on the DOF from pre- to mid- to post-test, compared to children whose teachers participated in the active control group. The CTRT intervention demonstrated large treatment effects on both measures (C-TRF: ?p2 =.173; DOF: ?p2=.164) when compared to CD, revealing the practical significance of the findings on reducing disruptive behaviors. According to independent raters on the DOF, 90% of children receiving the CTRT intervention moved from clinical levels of behavioral concern to more normative levels of functioning following treatment, establishing the clinical significance of CTRT as an early mental health intervention for preschool children in Head start exhibiting disruptive behavior. digital.library.unt.edu/ark:/67531/metadc149553/
Child Teacher Relationship Training (Ctrt) with Children Exhibiting Disruptive Behavior: Effects on Teachers’ Ability to Provide Emotional and Relational Support to Students and on Student-teacher Relationship Stress
This study investigated the impact of child teacher relationship training (CTRT) on teachers’ ability to provide emotional support in the classroom, teachers’ use of relationship-building skills, and teachers’ level of stress related to the student-child relationship. Teachers and aides from one Head Start school were randomly assigned to the experimental group CTRT (n = 11) or an active control Conscious Discipline group (CD; n = 12). Overall, 21 females, 11 (CTRT) and 11 (CD), and one male (CD) participated in the study. Participating teachers and aides identified themselves as the following: 13 Hispanic/Latino, 5 Black American, and 5 European American. Teachers and aides identified children with clinical levels of disruptive behavior problems for the purpose of selecting children of focus for the study. The children’s mean age was 3.63 for CTRT group and 3.36 for CD group. Overall, 9 females, 2 (CTRT) and 7 (CD), and 10 males, 6 (CTRT) and 4 (CD) participated in the study. Teachers reported children’s ethnicity: 13 Hispanic/Latino, 5 African American, and 1 other. A two-factor (Treatment x Group) repeated measures split plot ANOVA was utilized to analyze the data with an alpha level of .05. According to objective raters blinded to the study using the Classroom Assessment Scoring System (CLASS) and the Child Teacher Relationship Skills Checklist (CTRT-SC) and teacher reports using Index of Teaching Stress (ITS), results revealed a statistically significant interaction effect for the experimental teachers’ use of child-teacher relationship skills (CTRT-SC: p = .036), a non-statistically significant interaction effect for the experimental teachers’ ability to provide emotional support (CLASS: p = .50), and a non-statistically significant interaction effect on teacher stress (ITS: p = .997). Partial eta squared effect sizes were calculated to determine the practical significance of the findings. Compared to the active control, CTRT demonstrated large treatment effects over time on the CTRT-SC (?p2 = .19) and the CLASS (?p2 = .16). Study findings provide support for CTRT as an effective intervention for increasing Head Start teachers’ ability to provide emotional and relational support to at-risk students. digital.library.unt.edu/ark:/67531/metadc149655/
Childhood Bereavement and Parents’ Relationship With Children
It has long been recognized that childhood bereavement is a risk factor for depression in adulthood. Research also has consistently demonstrated that parental depression is linked to poor parent-child relationship quality. The current study examined whether bereavement in childhood increases likelihood of current depressive symptoms among parents and explored whether this vulnerability in the parent then alters the quality of the parent-child relationship. Archival data for a sample of 86 families (N=176 parents) are drawn from the Family & Kid Connection project led by Dr. Shelley Riggs. Instruments utilized include the Background Information Questionnaire, the Symptom Assessment-45 Questionnaire, and the Parenting Relationship Questionnaire. Using the Actor-Partner Interdependence Model, Multilevel Modeling procedures explored the hypothesis that parental depression mediates the association between parents’ childhood bereavement and their perception of the parent-child relationship. Results show a significant relationship between parental (actor) depressive symptoms and parent-child attachment, indicating the need for therapeutic interventions targeting the parent-child relationship, and not just parents, for parents suffering from depression. digital.library.unt.edu/ark:/67531/metadc115046/
Children with Autism in Taiwan and the United States: Parental Stress, Parent-child Relationships, and the Reliability of a Child Development Inventory
Autism is one of the fastest growing childhood disorders in the world, and the families that have children with autism experience frustration and stress due to many practical problems. with the increase in the prevalence of autism, it is urgent to raise awareness of autism and to provide services and support for children with autism and their parents to improve the parent-child relationship and moderate the parental stress. with regard to families with children diagnosed as autistic, the purposes of this study are to: (a) examine the group differences in parental stress and parent-child relationship between Taiwan and the United States based on racial and cultural differences; (b) identify factors, if any, that influence the parental stress and parent-children relationship; (c) investigate if there are differences in the results of child development when children are diagnosed with autism in these two countries; (d) establish the Battelle Development Inventory-II in Mandarin Chinese version for use of evaluation with development delays in Taiwan. Findings revealed that: (a) the Battelle Developmental Inventory, Second Edition (BDI-II), is highly reliable with a great value of internal consistency in the use with parents and children with autism in Taiwan; (b) there is no significant difference in child development and parent-child relationship based on geographic region (Taiwan and the United States); (c) parents of children with autism in the United States overall have a more positive parent-child relationship and parenting attitude than parents of children with autism in Taiwan; (d) Children with autism who have a positive relationship with their parents have a higher pass rate on the evaluation of child development; (e) fathers reported higher pass rate on BDI-II than mothers in one of the standard deviations of over BDI-II performance; (f) parent-child relationships are positively correlated with parental stress; (g) parents who received services and support from a government agency or school in Taiwan have significantly lower scores on the parent-child relationship inventory; (h) fathers of children with autism have higher stress level than mothers; (i) parents who received services and support from parent groups (such as PTA or parent association) and from a government agency or school feel less stress than parents that did not receive those supports in Taiwan. digital.library.unt.edu/ark:/67531/metadc115114/
Chirped-Pulse Fourier Transform Microwave Spectroscopy of Fluoroiodoacetonitrile and Chloropentafluoroacetone
This work focuses on finding the complete iodine and nitrogen nuclear electric quadrupole coupling tensors for fluoroiodoacetonitrile using chirped-pulse Fourier transform microwave spectroscopy. Fluoroiodoacetonitrile contains two hyperfine nuclei, iodine (I=5/2) and nitrogen (I=1) and the spectra were observed with great resolution. A total of 499 transitions were observed for this molecule. The a, b and c rotational constants were obtained. A study of chloropentafluoroacetone was also done using chirped-pulse Fourier transform microwave spectroscopy. The two chlorine isotopes for this molecule, Cl-35 and Cl-37 were observed and 326 and 170 transitions were recorded, respectively. digital.library.unt.edu/ark:/67531/metadc84230/
The Chopin Etudes: a Study Guide for Teaching and Learning Opus 10 and Opus 25
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The etudes of Chopin are masterworks of the piano literature and are designed to go beyond mere technical exercises; moreover, each etude represents not only a technical study but also has a distinct musical character. Alarmingly, the current trend seems to be to assign the Chopin etudes at an increasingly young age to students who are not yet equipped either technically or musically to handle them. As Chopin’s pupil, Carl Mikuli, commented in the preface to his Chopin edition, the etudes were meant for “more advanced students.” If Chopin had intended his etudes for students at an intermediate level, he would have assigned them to most of his students; however, only a limited number of students had his permission to work on their master’s etudes. As a teacher, I have always felt the need to devise a systematic teaching plan to guide students to handle the challenges of these pieces both physically and musically. This study examines the repertoire which might help prepare a student to learn the etudes without overstraining his/her muscular and mental ability. Rooted in Chopin’s teaching and his recommendation of the pieces to learn before tackling the etudes themselves, this pedagogical study guide intends to help students and teachers to work progressively towards the study of these works. While pinpointing some exercises and simple pieces to assign to a student in preparation for studying the individual etudes, helpful works of later composers are also liberally incorporated, as well as some suggestions for practicing the etudes themselves. Finally, I shall provide my own “re-ordering” of the etudes, with a progressive degree of difficulty, as an additional aid to a young pianist who may eventually want to learn the entire opus 10 and opus 25. digital.library.unt.edu/ark:/67531/metadc115039/
The Choral Music of Ola Gjeilo: a New Vision of the Choral Instrument in the 21St Century
The choral music of Norwegian composer Ola Gjeilo (pronounced “yay-loh”) is gaining international acclaim and is widely performed and commissioned by prominent high school, university, and professional choirs. It represents a philosophical approach and vision of the choral instrument for which the conductor must have a clear understanding in order to prepare a meaningful performance. in particular, his music merges diverse musical influences, which results in a product of unique character among choral compositions in the late 20th and early 21st centuries. Gjeilo draws inspiration from a text but then uses its sonic qualities (the sounds of vowels and consonants) to create an atmosphere of sound instead of following the traditions in choral and vocal music of using musical mechanisms (melody, rhythm, and harmony) to reinforce the text poetically. This study provides an overview of Gjeilo’s background, in Chapter 1, and discusses its influence on his compositional philosophy. Chapter 2 contains musical examples from selected works, which are used to illuminate unique attributes found in Gjeilo’s music. Chapter 3 presents important implications to consider aiding choral conductors in their preparation of future performances of Gjeilo’s music. digital.library.unt.edu/ark:/67531/metadc115152/
A Chorus of Trees
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This two-part thesis includes a critical preface and a collection of my poems. Using three poems-Louise Glück's "Lullaby," Bob Hicok's "Poem for My Mother's Hysterectomy," and Nick Flynn's "Memento Mori"-the critical preface examines how, in poetry, the transformation of a body negotiates trauma and triggers a conceptual shift, the creation and revision of identity, and the release of the duende's inspirational force. The collection of poetry that follows seeks to transfigure the body as a way to explore the nuanced traumas of human experience. digital.library.unt.edu/ark:/67531/metadc30485/
Chronic Hypoxia and Hyperoxia Modifies Morphology and Vegf Expression of the Lungs of the Developing Chicken (Gallus Gallus Domesticus)
This study determines effects of oxygen levels on morphology and VEGF expression of developing chicken lungs following incubation in normoxia (21% O2), hypoxia (15% O2) or hyperoxia (30% O2), until developmental days 16 or 18. Lung morphology was assessed using light microscopy, while VEGF expression was determined with ELISA. In hypoxia, the proportion of parabronchial tissue and parabronchi including lumina increased from day 16 to 18 (61 to 68% and 74.2 to 82.2%, respectively). Non-parabronchial tissue was higher in hypoxia than in hyperoxia on day 16 (26 to 20%). However, by day 18, there were no differences between groups. VEGF expression was 33% higher in hypoxia than in hyperoxia on day 16 (736 vs. 492 pg/ml). On day 18, VEGF expression was 43% higher in hyperoxia than in normoxia (673 to 381pg/ml), and remained elevated by 40% in hypoxia over normoxia (631 pg/ml). VEGF may be a mechanism by which parabronchial tissue is stimulated from day 16 to 18 following exposure to chronic hypoxia. digital.library.unt.edu/ark:/67531/metadc177224/
Chronic Insomnia and Healthcare Utilization in Young Adults
Chronic insomnia is a highly prevalent disorder in general and young adult populations, and contributes a significant economic burden on society. Previous studies have shown healthcare utilization (HCU) is significantly higher for people with insomnia than people without insomnia. One limitation with previous research is accurate measurement of HCU in people with insomnia is difficult due to a high co-morbidity of medical and mental health problems as well as varying operational definitions of insomnia. Assessing HCU in people with insomnia can be improved by applying research diagnostic criteria (RDC) for insomnia, using a population with low rates of co-morbid medical/mental health problems, and measuring HCU with subjective, objective, and predictive methods. The current study found young adults with chronic insomnia had greater HCU than normal sleepers, specifically on number of medications, and chronic disease score (CDS) estimates of total healthcare costs, outpatient costs, and predicted number of primary care visits. The presence of a medical and/or mental health problem acted as a moderating variable between chronic insomnia and HCU. Simple effects testing found young adults with chronic insomnia and a medical/mental health problem had the greatest HCU followed by normal sleepers with a medical/mental health problem, chronic insomnia, and normal sleepers. Exploratory analyses found young adults with chronic insomnia had a greater likelihood of emergency room visits and overnight hospital admissions. More efforts for early identification and intervention of insomnia are necessary to help reduce costs associated with chronic insomnia co-morbid with medical and/or mental health problems. digital.library.unt.edu/ark:/67531/metadc84179/
Chronic Myopia: Foundations of Contemporary Western Perspectives on the Balkans
The construction of Southeastern Europe in Western imagination is the result of assertions of imperial power from some of the first recorded histories onward to modern time. Instead of providing alternative narratives gaping differences in time period, literary genres and geographical origins ballast stereotypical racist tropes and derogatory images of the countries of Southeastern Europe. For example, Roman histories, secondary historical works, twentieth century travel literature, and Central Intelligence Agency estimates all exhibit the same perception. The narrative created by these accounts is limited, remarkably racist and counterfactual. While there has been an abundance of new scholarship aimed at debunking the myths surrounding the area, much of the revisionist histories focus on placing blame, proving ethnogenesis, and serving political purposes. Understanding how the sources continue to influence perception is a pivotal step to understanding Southeastern Europe. digital.library.unt.edu/ark:/67531/metadc149619/
Churches, Social Service Access and Korean-american Elders: an Exploratory Study
This study examined how Korean co-ethnic churches serve as connections between Korean seniors and the agencies that offer social and health care services. The study developed from a pilot outreach program funded by the North Central Texas Council of Governments’ Area Agency on Aging (NCTAAA) to inform Korean seniors about Medicare-related programs between February and May of 2011. The results of the pilot program suggested that the Korean-American church can be an effective place for program outreach. The dissertation project, working in partnership with the NCTAAA and 2-1-1 services, further explored the use of Korean churches as a vehicle to connect Korean seniors to Extra Help (EH) and Medicare Saving Programs (MSP) and 2-1-1 services, a toll-free number for information about non-emergency health and social services. Fifty-three pastors were contacted to participate in a telephone survey and a face-to-face, in-depth semi-structured interview. Thirty telephone surveys and 11 face-to-face interviews were conducted. Five of the 30 pastors agreed to host program outreach presentations for the EH, MSP, and 2-1-1 services in their churches. Host churches tended to be more likely highly structured, regularly scheduled programs (e.g., Senior College) for seniors already in place. A total of 405 Korean seniors participated in the program outreach sessions. Five seniors received the EH application information, and 17 MSP application forms were distributed. Additionally, 28 seniors were assisted by phone, not only with the targeted programs, but also with other benefits information. Together, these outcomes indicate that the co-ethnic church can be a vehicle to connect Korean seniors to services offered by outside agencies. digital.library.unt.edu/ark:/67531/metadc407746/
The Cimbasso and Tuba in the Operatic Works of Giuseppe Verdi: A Pedagogical and Aesthetic Comparison
In recent years, the use of the cimbasso has gained popularity in Giuseppe Verdi opera performances throughout the world. In the past, the tuba or the bass trombone was used regularly instead of the cimbasso because less regard was given to what Verdi may have intended. Today, one expects more attention to historical precedent, which is evident in many contemporary Verdi opera performances. However, the tuba continues to be used commonly in performances of Verdi opera productions throughout the United States. The use of the tuba in the U.S. is due to a lack of awareness and a limited availability of the cimbasso. This paper demonstrates the pedagogical and aesthetic differences between the use of the tuba and the modern cimbasso when performing the works of Giuseppe Verdi operas. digital.library.unt.edu/ark:/67531/metadc31531/
El Cine De Terror Español Como Espejo De La Cultura Española
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This study traces the history and culture of Spain as seen through the lens of the nation´s production of horror cinema. Starting from the boom of Spanish horror film in the early 1960s, the thesis compares and contrasts the political and social aspects of Spanish society throughout three distinct eras of the 20th century: 1962 – 1975 (the boom of Spanish horror film through the Franco dictatorship), 1975 – 1999 (the transition to democracy through the end of the 20th century) and 2000 – present (the 21st century). Movies as diverse as Gritos en la noche (1962, Jesús Franco), ¿Quién puede matar a un niño? (1976, Narciso Ibáñez Serrador) and Angustia (1987, Bigas Luna) are framed by culturally-related anectodes as well as correlations to their respective social environments. Special attention has been paid to the production and release of each film, especially in regards to censorship during the Franco dictatorship. The results show that Spanish horror cinema has acted as a true mirror to culture, society and politics in its native country throughout the 20th century and that this trend will likely extend in to the future. digital.library.unt.edu/ark:/67531/metadc500060/
Civility Matters
While the proliferation of literature on the subject of growing incivility in society demonstrates the increasing importance given to civility by corporate America, there has been little academic investigation of the concept. The limited number of academic studies on civility reveals immense negative consequences for uncivil behavior. One question for marketers of businesses is whether lack of civility among front-end personnel can negatively influence sales. This dissertation is an attempt to fill this research gap by exploring responses to uncivil behavior under the theoretical framework of attribution theory. Using the CDSII scale based on attribution theory, experimental research design was used with current civil and uncivil behavior by the store employees and past experiences (positive, negative, and no-experience) with the store as stimulus. The consumers' perception of civility, attributions and behavioral intentions were measured and used as dependent variables. The results of the experiment showed that when a customer discerns employee behavior to be uncivil, the customer's perception of the level of the ability of the employee to control his own behavior decreases. The results of the study enhance the knowledge of two important consumer behaviors, namely complaining and switching behaviors by empirically studying their antecedents in a particular market interaction context. The results imply that it is important to eliminate or minimize any experience that the customer may construe as negative at a store. If practitioners can work towards eliminating or decreasing certain attributions of consumers, they can reduce the switching behaviors and thus impact customer retention rates and future sales. Though this study contributes to marketing theory and provides vital insights to practitioners, this study is but a starting point for further examination of the role of civility in consumer behavior and decision making. digital.library.unt.edu/ark:/67531/metadc68057/
“Civilizations without Boats”: Stories
This collection consists of a critical preface and nine short stories. Extrapolating from the work and legacy of Michel Foucault, the preface theorizes a genre of “heterotopian fiction” as constitutive of a fundamentally ethical approach to narrative creativity, distinguishing its functional and methodological characteristics from works that privilege aesthetic, thematic, or technical artistry. The stories explore spaces of madness, alterity, incomprehensibility, and liminal experience. Collection includes the stories “Mexico,” “Civilizations without Boats,” The Widow’s Mother,” “Guys Like Us,” “Everything You’d Hoped It Would Be,” “A Concerned Friend,” “Crisis Hotline,” “Coast to Coast,” and “The Ghosts of Rich Men.” digital.library.unt.edu/ark:/67531/metadc84222/
Classless: on Being Middle Class in America
Classless: On Being Middle Class in America is a documentary film that explores what it means to be middle class in America. The film combines personal narrative, folksy reporting, and comedy as the film's director— Joe Brown, tries to reconcile his own status anxiety with everyday understandings of social class. Classless takes the form of a journey; the film travels through the American South, Northeast, and the Mountain West while trying to get at the heart of our middle class American Dream. Classless forwards three main arguments: (1) the American middle class is not as all-encompassing as seems; (2) Americans are more concerned about inequality than both politicians and the media suggest; and (3) many Americans are not actually middle class, economically speaking. digital.library.unt.edu/ark:/67531/metadc271785/
Claude Bolling’s Toot Suite for Trumpet and Jazz Piano: a Performance Guide
Claude Bolling’s Toot Suite for Trumpet and Jazz Piano that was premiered by French virtuoso trumpeter Maurice Andre in 1980 is an important work in the trumpet repertoire. At present, there is limited research regarding Toot Suite. Almost all of the six movements within Toot Suite are performed on a different instrument: C trumpet for Allegre, Eb trumpet for Mystique, Bb cornet for Rag-Polka, Bb piccolo trumpet for Marche, Bb flugelhorn for Vesperale and Bb piccolo for Spirituelle. Chapter 1 examines the life and musical background of the composer. It also exposes the history surrounding the origin of Toot Suite. Chapter 2 discusses the musical influences of the composer that are found in Toot Suite. Chapter 3 provides an analysis of existing studio recordings. Chapter 4 offers specific suggestions regarding preparation and performance of Toot Suite. Chapters 5 and 6 conclude the guide with interviews with the composer and prominent trumpet performers and pedagogues that have recorded and/or have performed Toot Suite live. digital.library.unt.edu/ark:/67531/metadc149650/
Clustering Algorithms for Time Series Gene Expression in Microarray Data
Clustering techniques are important for gene expression data analysis. However, efficient computational algorithms for clustering time-series data are still lacking. This work documents two improvements on an existing profile-based greedy algorithm for short time-series data; the first one is implementation of a scaling method on the pre-processing of the raw data to handle some extreme cases; the second improvement is modifying the strategy to generate better clusters. Simulation data and real microarray data were used to evaluate these improvements; this approach could efficiently generate more accurate clusters. A new feature-based algorithm was also developed in which steady state value; overshoot, rise time, settling time and peak time are generated by the 2nd order control system for the clustering purpose. This feature-based approach is much faster and more accurate than the existing profile-based algorithm for long time-series data. digital.library.unt.edu/ark:/67531/metadc177269/
Coaches’ Influence on Male Adolescents’ Achievement Motivation, Psychological Factors, and Sport Participation
The motivational climate, as created by coaches, and athletes’ goal orientations are key constructs in understanding children’s experiences with sport. In this study, the relationship between the perceived motivational climates, male adolescents’ goal orientation, and their experiences of self-esteem, sport competence, enjoyment, and ultimately, intention to continue participating in sport was examined. Participants were 405 male adolescents (Sample A: n = 200; Sample B: n = 205) aged 13-15 years old. Structural equation modeling indicated an overall good fit to the structural model for both data sets. A task goal orientation was predicted by higher levels of coach-created task climate. Participants with higher task goal orientation had greater sport competence, self-esteem, and more enjoyment in sport; enjoyment was the only significant predictor of their intention to continue playing the sport they believe is most important over the next three years. digital.library.unt.edu/ark:/67531/metadc84226/
Cold-Formed Steel Bolted Connections Using Oversized and Slotted Holes without Washers
In cold-formed steel (CFS) construction, bolted connections without washers for either oversized or slotted holes may significantly expedite the installation process and lower the cost. However, the North American Specification (AISI S100, 2007) for the Design of Cold-Formed Steel Structural Members requires washers to be installed in bolted connections with oversized or slotted holes. A research project (Phase 1) sponsored by American Iron and Steel Institute (AISI) was recently completed at the University of North Texas (UNT) that investigated the performance and strength of bolted CFS connections with oversized and slotted holes without using washers. The research presented in this thesis is the Phase 2 project in which the bolted CFS connections were studied in a broader respect in terms of the failure mechanism, the material thickness, and the hole configurations. Single shear and double shear connections without washers using oversized holes, oversized combined with standard or slotted holes were experimentally examined. Combined with Phase 1 results, the Phase 2 gives a comprehensive evaluation of the behavior and strength of bolted CFS connections with oversized and slotted holes without using washers. Revisions to the existing AISI North American Specification requirements for bolted connections are proposed to account for the reduction in the connection strength caused by the oversized and slotted hole configurations without washers. Specific LRFD and LSD resistance factors and ASD safety factors for different hole configurations in terms of the new proposed methods were presented. digital.library.unt.edu/ark:/67531/metadc30530/
Cold-formed Steel Framed Shear Wall Sheathed with Corrugated Sheet Steel
Incombustibility is one important advantage of the sheet steel sheathed shear wall over wood panel sheathed shear wall. Compared to shear wall sheathed with plywood and OSB panel, shear wall sheathed with flat sheet steel behaved lower shear strength. Although shear wall sheathed with corrugated sheet steel exhibited high nominal strength and high stiffness, the shear wall usually behaved lower ductility resulting from brittle failure at the connection between the sheathing to frames. This research is aimed at developing modifications on the corrugated sheathing to improve the ductility of the shear wall as well as derive practical response modification factor by establishing correct relationship between ductility factor ? and response modification factor R. Totally 21 monotonic and cyclic full-scale shear wall tests were conducted during the winter break in 2012 by the author in NUCONSTEEL Materials Testing Laboratory in the University of North Texas. The research investigated nineteen 8 ft. × 4 ft. shear walls with 68 mil frames and 27 mil corrugation sheet steel in 11 configurations and two more shear walls sheathed with 6/17-in.OSB and 15/32-in. plywood respectively for comparison. The shear walls, which were in some special cutting arrangement patterns, performed better under lateral load conditions according to the behavior of ductility and shear strength and could be used as lateral system in construction. digital.library.unt.edu/ark:/67531/metadc271921/
A Collaborative Affair: The Building of Museum and School Partnerships
This study examined two art museum and school partnerships in order to learn how partnerships enable an integration of goals, participants' beliefs and values, and learning objectives. This study examined the partnerships through a social constructivist lens and used narrative analysis as way to interpret participants' stories about collaboration. The research found three major themes among participants' stories. Participants: a) valued good communication to establish relationships between partners, b) believed partnership offered students experiences that educated the whole person, and c) felt that students making meaning by interacting in the museum environment was an indicator of success. The study closes with discussion of the researchers' own constructions as they developed throughout the study. digital.library.unt.edu/ark:/67531/metadc30532/
A Collective Case Study of Veterans Inside an Arts and Crafts Room and Their Perceptions Regarding Empowerment
This dissertation is "A Collective Case Study of Veterans Inside an Arts and Crafts Room and Their Perceptions Regarding Empowerment." This research examined to what degree art making, and in what ways a community of learning contributed to veterans' self-worth and empowerment through their creative activities and interactions inside an arts and crafts room at the VA hospital in Dallas, Texas. Furthermore, an essential reason for this study is to examine veterans in the arts and crafts environment to explore whether their experiences were important, meaningful, and empowering, and especially important in this regard are the interactions among veterans. Empowerment in this context is defined as gaining self-esteem and motivation within oneself. This includes becoming more confident and positive, as well as gaining the ability to learn about one's own identity. It also described how the interactions between the participants are shaped by the social contexts within which they come together. Using post-modern feminist theory, narrative inquiry and care theory, this dissertation describes the ways that the processes and products of creative activity bring empowerment through dialogue and personal stories while using the component of caring during teaching and learning. digital.library.unt.edu/ark:/67531/metadc177210/
The Collective Pedagogy Utilized By the Trombone Instructors at the Rotterdam Conservatory of the Netherlands
The Collective Pedagogy Utilized by the Trombone Instructors at the Rotterdam Conservatory of the Netherlands offers a comprehensive study of the collaboration between the various instructors of the trombone studio within the Rotterdam Conservatory and their pedagogical approach to curriculum, lesson structure, grading process, student body, and social environment. the Rotterdam Conservatory has produced some of the finest trombonists in the global music community. Alumni from the conservatory consistently win positions in professional ensembles, succeed in national and international competitions, and are often featured artists at international music festivals. the success of their alumni warrants closer scrutiny of the pedagogical approach utilized by the faculty of the conservatory. digital.library.unt.edu/ark:/67531/metadc115177/
College Student Resilience: Selected Effects of Service-Learning
Resilience implies the concept of buoyancy. Specifically, it denotes an individual's capacity to persevere and even do well in the face of adversity. Service-learning is pedagogy often used to enable students to apply classroom learning in a real world context. The goal of this study was to examine the effects of service-learning upon college student resilience. The study utilized a convenience sample of undergraduate students (N = 172) across three disciplines including counseling, social work and kinesiology. In a pre-post test design, the CD-RISC was employed to measure resilience of the experimental and control groups. Factor analysis of the CD-RISC was also conducted in order to explore interrelationship of the variables among the data. One undergraduate sample (N = 210) was used to conduct the EFA before determining a best fit factor structure for this study's population. A repeated measures analysis of variance was employed to detect any differences between pre-post test groups. No statistical significance was found across pre and post-test among the two groups (p=.49, &#951;2=.00). However significant results were found between the experimental and control groups (p=.00, &#951;2 =.09). Examination of mean score differences among demographic variable yielded interesting findings across the three disciplines as well as between age and gender of the participants. Findings indicated students given freedom of choice within service-learning logistics scored greatest gains in resilience. digital.library.unt.edu/ark:/67531/metadc30495/
College Success for all Students: An Investigation of Early Warning Indicators of College Readiness
The purpose of this quantitative study was to determine early warning indicators of college readiness among early college high school students at selected Texas institutions of higher education. Participants in this study included 134 of the class of 2010 from two early college high schools. The graduates were 86% Hispanic, 8% African American, 3% White, 2% Asian, 1% American Indian and 72% economically disadvantaged. A causal-comparative research design using multiple regression analysis of the data collected revealed that each one unit increase in world history was associated with a .470 (p < .05) increase in college GPA, while each one unit increase in Algebra I was associated with a .202 (p < .05) increase. Therefore, student grades in high school Algebra I and world history were the strongest statistically significant indicators that a student will maintain a 2.5 college GPA during the first year of college. According to the early warning indicators, students who maintain a grade of A or B in Algebra I are 10 times more likely to be college ready while having a 78% chance of maintaining a 2.5 or better in college courses. Further, the findings from this study found no significant relationship between TAKS assessment, socioeconomic status, gender or ethnicity and a student's ability to maintain a 2.5 or higher college GPA. Based on the findings from this study, the author recommends an examination of the high school curriculum with the goal of ensuring that students gain competency in courses that indicate college readiness. digital.library.unt.edu/ark:/67531/metadc33141/
Combat Near-Death Experiences: An Exploratory, Mixed-Methods Study
This mixed-methods study’s purpose was a systematic comparison of contents and aftereffects of near-death experiences (NDEs) occurring in a variety of circumstances with those occurring in combat. They completed an online survey: a demographic questionnaire, the Near-Death Experience Scale, the Life Changes Inventory-Revised (LCI-R), and four narrative response items. Survey completers were 68 participants: 20 combat near-death experiencers (cNDErs) and 48 non-NDErs (nNDErs). The 29% of participants who met NDE Scale criterion for an NDE was comparable to NDE incidence findings from previous retrospective studies. For statistical analyses, significance was set at p < .05, and effect size (Cohen’s d) was calculated. Mean total NDE Scale scores were significantly lower for cNDErs than variety-of-circumstance NDErs from one of two comparable studies (t = 5.083, p < .0001, d = -1.26), possibly suggesting cNDEs may have “less depth” than other-variety NDEs. Regarding cNDE aftereffects, absence of previous LCI-R data made comparison impossible. Cronbach’s alpha analysis yielded acceptable reliability on the total scale and seven of nine subscales, a finding that matched Schneeberger’s (2010); however, factor analytic results did not support the hypothesized subscale structure of the LCI-R. Although cNDErs did not score significantly higher than nNDErs on the total scale or subscales after Bonferroni correction, results indicated a possible trend toward greater absolute changes (p = 0.02, d = 0.74) and spirituality (p = 0.02, d = 0.67) with the latter finding substantiated by narrative responses. Informal analysis of narrative responses yielded several themes. digital.library.unt.edu/ark:/67531/metadc84208/
Combining of Korean Traditional Performance and Recent German Techniques in Isang Yun's Kontraste: Zwei Stücke für Violine Solo (1987)
Isang Yun (1917-1995) embraced a masterful combination of two elements derived from his life: his Korean cultural upbringing and Western musical traditions. This dissertation explores Yun's distinctive style through an analysis of his Kontraste: Zwei Stücke für Violine Solo. Following the introduction (Chapter 1), Chapter 2 contains a brief biography of Isang Yun, and explores the compositions of his Korean period (1917-1955) and his European period (1956-1995). It also discusses how Yun's musical styles changed during these two periods as a result of important life events and due to cultural and political influences. Chapter 3 examines Korean instruments such as Kayakem, Hae-Kem, and Pak; discusses Nonghyun (traditional string techniques of ornamentation in Korean music); and introduces Korean performance techniques. This chapter also provides explanations of these concepts, illustrated through various examples. A subsequent discussion illuminates Yin-Yang theory and Jeong-Jung-Dong, both elements of Taoist philosophy that influenced Yun's compositional style. This is followed by explanations of Hauptton and Umspielung, two compositional techniques that Yun developed and employed in Kontraste. Yun created the idea of Hauptton to reflect the Korean traditional concept of a single note. He used the term Umspielung ("playing around" in German) to describe his interpretation of the four traditional techniques of Nonghyun within a Western notational framework. In Chapter 5, analysis of Kontraste reveals how the piece's contrasting elements represent the concepts of Yin-Yang and Jeong-Jung-Dong, and shows how the violin imitates the sounds of Korean traditional instruments and instrumental technique. Yun's adaption of Korean traditional performance techniques to the violin in Kontraste is aimed at combining East and West and producing a new aesthetic. digital.library.unt.edu/ark:/67531/metadc33175/
Communication System over Gnu Radio and OSSIE
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/
Community College Student Success in Developmental Mathematics Courses: a Comparison of Four Instructional Methods
The student success rates for three developmental mathematics courses (prealgebra, elementary algebra, and intermediate algebra) taught through four instructional methods (lecture, personalized system of instruction [PSI], hybrid, and online) were examined. The sample consisted of 9,211 students enrolled in a large Texas community college from fall 2009 through spring 2011. Student success was defined as a grade of C or better. Chi-square tests were used to compare the three developmental mathematics courses success rates. Statistically significant differences in student success were found between all four methods of instruction for all three mathematics courses (prealgebra: χ2 [df = 3] = 107.90, p < 0.001; elementary algebra: χ2 [df = 3] = 88.39, p < 0.001; intermediate algebra χ2 [df = 3] = 254.18, p < 0.001). Binary logistic regression modeling was used to determine to what extent age, gender, ethnicity, residency, Pell eligibility and mode of instruction accounted for the community college students’ course success for each of the three developmental mathematics courses. For prealgebra, the independent variables of gender, race, age, residency, and mode of instruction made statistically significant contributions to the model (χ2 [df = 14, n = 1,743] = 159.196, p < .001; Nagelkerke R2 = .119), with greater success among female, White, younger, out of country students taking the course through lecture. For elementary algebra, the independent variables of race, age, residency, and mode of instruction made statistically significant contributions to the logistic regression model (χ2 [df = 14, n = 2,731] = 816.223, p < .001; Nagelkerke R2 = .358), with greater success among , younger, out of country students taking the course through lecture, hybrid or PSI. For intermediate algebra, only race and Pell eligibility made a statistically significant contribution to the logistic regression, with greater success among White, Pell-eligible students, and mode of instruction did not contribute significantly to the model (χ2 [df = 14, n = 3,936] = 53.992, p < .001; Nagelkerke R2 = .019). Recommendations for research and implications for practice are provided. digital.library.unt.edu/ark:/67531/metadc500150/
Community Resilience in Thailand: a Case Study of Flood Response in Nakhonsawan City Municipality
Natural disasters such as flooding often affect vast areas and create infinite demands that need to be addressed in the same time. The wide scopes and severe impacts of such catastrophes often exceed, if not overwhelm, capacity of the national government to handle. In such a situation, communities such as cities and neighborhoods need to rely on their own capacity (resources, strategies, and expertise) to respond to disaster impacts at least until external assistance can be reached. Thus, studying how communities can be resilient to the impacts of natural disasters is important because this would enhance their ability to respond to the next disaster better. Within the context of great flooding in Thailand in 2011, this dissertation investigated the factors that generated or enhanced resilience of flood stricken-communities in Thailand. Nakhonswan City Municipality was selected as the research site. Qualitative research methods were employed in this study. Data were collected using in-depth interview and focus group. Thirty-six participants (28 for in-depth interview and 8 for focus group interview) from various organizations were recruited using snowball and purposive sampling strategies. Interview data from the field research were transcribed, translated from Thai language to English, and then analyzed using open coding and focused coding strategies. Analyses of in-depth interview data revealed eight conceptual themes representing factors that constituted resilience of Nakhonsawan City Municipality, as the leading organization responded to the flood. These factors are: availability of resources for resilience; managerial adaptability; crisis leadership; quality workforce; knowledge sharing and learning; organizational preparedness; organizational integration; and sectoral integration. In addition, findings from the focus group interview with members of three strong neighborhoods found eight factors that helped these neighborhoods respond effectively to the flood crisis. They included: self-reliance; cooperation; local wisdom; preparedness; internal support; external support; crisis adaptability; and pre-disaster social cohesion. This dissertation ended with the discussion of implications, limitations and suggestions for future research. digital.library.unt.edu/ark:/67531/metadc271841/
Comparative Analysis Of 105 Higher Education Doctoral Programs In The United States
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/
A Comparative Analysis of the 1915 and 1919 Versions of Symphony No. 5 in E-flat Major, op. 82 by Jean Sibelius
The initial composition of the Fifth Symphony in E-flat Major, Op. 82 was undertaken as a commission to celebrate the composer's fiftieth birthday. Unhappy with the initial efforts, two revisions were then performed; the first was in 1916 and the final revision in 1919. Despite the larger form of the work seeming to have been changed between the 1915 and 1919 versions, the smaller gestures of thematic expression in both versions remained similar. On the surface, it had appeared that the composer had eliminated a movement, changing the 1919 version into a three movement form. This view was not challenged by the composer at the time, and since the earlier versions had either been withdrawn or destroyed, there was no way to compare the original efforts to the final product until recently. In comparing the 1919 version to the original, a definite strong parallel can be seen between the two - despite the changes to form, rearrangement of melodic material, and the seemingly different number of movements. However, the parallel is enough that the 1915 version can be a guide to classifying the 1919 version, an act that has eluded many scholars since the 1920s. Most importantly, comparing the two versions shows that the 1919 version is not a three movement form at all; it is a four movement form that is obscured by the connection of the first and second movements by a thematic bridge that contains elements from both movements, but is not placed within either structure. digital.library.unt.edu/ark:/67531/metadc28459/
A Comparative Analysis of Web-based Machine Translation Quality: English to French and French to English
This study offers a partial reduplication of a 2006 study by Williams, which focused primarily on the analysis of the quality of translation produced by online software, namely Yahoo!® Babelfish, Freetranslation.com, and Google Translate. Since the data for the study by Williams were collected in 2004 and the data for present study in 2012, this gives a lapse of eight years for a diachronic analysis of the differences in quality of the translations provided by these online services. At the time of the 2006 study by Williams, all three services used a rule-based translation system, but, in October 2007, however, Google Translate switched to a system that is entirely statistical in nature. Thus, the present study is also able to examine the differences in quality between contemporary statistical and rule-based approaches to machine translation. digital.library.unt.edu/ark:/67531/metadc177176/
Comparative Phyto-uptake Across Distribution Coefficients of Pharmaceutical Compounds and Aquatic Macrophytes: Carbamazepine and Amiodarone Uptake in Lemna Spp
Few studies have been conducted on the effectiveness of phytoremediation of pharmaceutical compounds, although the persistent and non-acutely toxic nature of many of these compounds in today's water bodies may yield an ideal application for this practice. To quantify the potential effectiveness of plant uptake, kinetic and proportional bioconcentration factors (BCFk, and BCFp, respectively) in nanograms (ng) carbamazepine and amiodarone per gram (g) wet weight plant tissue for Lemna spp. were determined utilizing a 14-day continuous flow-through study. Samples were analyzed using isotope dilution liquid chromatography-tandem mass spectrometry (ID-LC-MS/MS) running in positive ion mode. Kinetic BCF was estimated at 0.538, while proportional BCF was estimated at 0.485. Kinetic BCF for the amiodarone study was estimated at 23.033, whereas proportional BCF was estimated at 41.340. Possible contamination of the C18 column and peristaltic pump failure may have impacted uptake results. In light of variability and current lack of research in the field, this work should be considered exploratory rather than conclusive. digital.library.unt.edu/ark:/67531/metadc283798/
A Comparative Study of Non Linear Conjugate Gradient Methods
We study the development of nonlinear conjugate gradient methods, Fletcher Reeves (FR) and Polak Ribiere (PR). FR extends the linear conjugate gradient method to nonlinear functions by incorporating two changes, for the step length αk a line search is performed and replacing the residual, rk (rk=b-Axk) by the gradient of the nonlinear objective function. The PR method is equivalent to FR method for exact line searches and when the underlying quadratic function is strongly convex. The PR method is basically a variant of FR and primarily differs from it in the choice of the parameter βk. On applying the nonlinear Rosenbrock function to the MATLAB code for the FR and the PR algorithms we observe that the performance of PR method (k=29) is far better than the FR method (k=42). But, we observe that when the MATLAB codes are applied to general nonlinear functions, specifically functions whose minimum is a large negative number not close to zero and the iterates too are large values far off from zero the PR algorithm does not perform well. This problem with the PR method persists even if we run the PR algorithm for more iterations or with an initial guess closer to the actual minimum. To improve the PR algorithm we suggest finding a better weighing parameter βk, using better line search method and/or using specific line search for certain functions and identifying specific restart criteria based on the function to be optimized. digital.library.unt.edu/ark:/67531/metadc283864/
A Comparative Study of the Effects of State Grant Reductions on Local Expenditures: Empirical Studies in Massachusetts and Colorado Municipalities
State grants are perceived to mitigate the fiscal disparities among local governments in providing services. However, cutbacks in state grants as a result of changes in state grant policy in different states affect local expenditures dedicated to maintaining service provisions to citizens. This dissertation constructs a theoretical model to explain the extent to which and the ways in which types of state grants, revenue diversity, and form of local government impact local spending and the provision of public programs when local governments experience cuts in state grants. The dissertation also argues that when facing state grant cuts, local governments with a council-manager form of government and with higher revenue diversity will experience reduced change in local expenditures and that decreases in state categorical grants will lead to more cuts in distributive program expenditures. Given the diversity of state and local arrangements, this dissertation conducts a comparative and panel data study to test the hypotheses in 351 and 271 municipalities in Massachusetts and Colorado, respectively, in 2000 through 2008. The empirical results indicate that the form of government and the degree of revenue diversification have a greater impact on the local spending behaviors in Colorado than in Massachusetts. Meanwhile, decreases in state categorical grants lead to more cuts in distributive program expenditures in both Massachusetts and Colorado. This dissertation concludes that the theoretical model explains the effects of state grant reductions on local spending better in Colorado than it does in Massachusetts. digital.library.unt.edu/ark:/67531/metadc271789/
A Comparative Study of Two Single-Subject Keyboard Ricercare by Johann Jacob Froberger: Projections of Sixteenth-Century Practice Combined with Features that Forecast Baroque Practice
This study is focused on an analysis of two single-subject ricercare in the keyboard music of Johann Jacob Froberger and examines possible pathways to the development of the Baroque fugue. This dissertation is divided into three parts. Chapter I contains the purpose, significance of this study and composer, as well as characteristics of the seventeenth-century single-subject ricercar. Chapter II details and examines Froberger's two ricercare. Finally, a conclusion of this study is presented in Chapter III. Two appendixes are included in this dissertation: a list of the single-subject ricercare of Andrea Gabrieli, Giovanni Gabrieli, and Johann Jacob Froberger; and an analysis of the two single-subject ricercare, FbWV 407 and FbWV 409, by Johann Jacob Froberger. digital.library.unt.edu/ark:/67531/metadc68000/
Comparing Indices of Happiness during Teaching Interactions
The measurement of happiness has received increasing attention in behavior analytic literature. Happiness in individuals with developmental disabilities has been assessed by 1) counting a specific behavior, or 2) sampling constellations of behaviors. The purpose of this study was to examine the two approaches while observing nine child and teacher dyads at an autism treatment center. Results showed that, overall, a constellation of behaviors can yield similar patterns when compared to a specific behavior count. However, the affect of one person did not predict the affect of the other and similar instructional conditions did not predict affect either. The implications of these results and future directions are discussed. digital.library.unt.edu/ark:/67531/metadc28385/
Comparing Latent Dirichlet Allocation and Latent Semantic Analysis as Classifiers
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/
Comparing the 2010 and 2011 Appic Match: Applicant Characteristics and Unmatched Applicant Distress
The internship is one of the most important components of doctoral training in professional psychology. Given the serious problem of the internship imbalance, applicant and program characteristics that constitute a good “fit” with internship training programs have become of greater interest as securing an internship becomes a more competitive process. This study surveyed internship applicants from programs part of the Council of University Directors of Clinical Psychology (CUDCP), before and after the 2010 and 2011 match days. Number of interview offers was found to be the factor most consistently associated with successfully matching, and several other applicant characteristics salient to matching and obtaining interview offers were identified, including applicant personality. Additionally, personal accounts, but not empirical evidence, of going unmatched have attested to the psychological distress associated with this event. in the current study, while going unmatched was not found to be equitable to a traumatic stressor, evidence was found to support significant decrease in subjective well-being with respect to immediate distress. Findings are discussed in terms of the predictability of and implications for the match process and internship imbalance, and recommendations are made for future research directions. digital.library.unt.edu/ark:/67531/metadc115097/