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Music
199
Department of Psychology
24
Department of Teacher Education and Administration
24
Department of Counseling and Higher Education
22
Department of Instrumental Studies
21
Department of Biological Sciences
17
Department of Chemistry
16
Department of Learning Technologies
13
Department of Computer Science and Engineering
11
Department of English
9
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A Canonical Correlational Analysis Exploring Characteristics of Children Presenting to Counseling for Grief and Loss
To date, researchers who have explored the complexity of childhood bereavement have utilized unstandardized assessment instruments and/or have independently evaluated specific constructs rather than factoring in the dimensionality of loss. The purpose of this study was to use parents' completion of established instruments--the Child Behavior Checklist and the Parenting Stress Index--to examine the multivariate shared relationship between characteristics of bereaved children referred for counseling--their ages, genders, ethnicities, types of loss, and life stressors--and their behavioral manifestations as well as the relationship between these characteristics and levels of parent-child relational stress. Utilizing archival clinical files, I examined these characteristics from bereaved children (N = 98) whose parents sought counseling services from two university-based counseling clinics. The sample consisted of 67 boys and 31 girls between the ages 3 and 11 years old (M = 6.28). The majority of participants (67%, n = 66) identified as Caucasian, 10% (n = 10) as African American, 10% (n = 10) as Hispanic/Latino, 6% as Bi-racial (n = 6), 4% as Native American (n = 4), and 2% as Asian (n = 2). A canonical correlational analyses (CCA) was conducted to examine relationship between characteristics of children and their subsequent behavioral manifestations. The full model …
Date:
August 2015
Creator:
Ener, Liz D.
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
A Case Study of an Urban Charter School’s Journey of School Improvement: Organizational Theory, Institutional Learning and School Reform
The problem for this study was the need to increase and maintain in student achievement in charter schools. The purpose of this single-case study was to discover how an inner city charter school with a high percentage of at-risk students increased overall student achievement and attained acceptable performance status when faced simultaneously with administrative challenges and increases in state and federal standards. The participants for the single-case study included the school district’s superintendent, the high school principal, the dean of students, four faculty of the district, and one outside consultant appointed to work with the district by the state of Texas. The sampling for this study allowed for the opportunity to study in greater depth the choice of reform strategies and organizational structure designed to result in increased student achievement and student success over the course of two years. Since this was a single-case study of one charter school district, participants were referenced by the role in which they served. All district, campus, and participant names remained anonymous. The results showed the increased student achievement was made possible by several reform strategies and best practices. The primary reform strategies and best practices that had the greatest impact were consistent campus …
Date:
May 2015
Creator:
Subjinski, Amanda
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Characteristics of Primary Cilia and Centrosomes in Neuronal and Glial Lineages of the Adult Brain
Primary cilia are sensory organelles that are important for initiating cell division in the brain, especially through sonic hedgehog (Shh) signaling. Several lines of evidence suggest that the mitogenic effect of Shh requires primary cilia. Proliferation initiated by Shh signaling plays key roles in brain development, in neurogenesis in the adult hippocampus, and in the generation of glial cells in response to cortical injury. In spite of the likely involvement of cilia in these events, little is known about their characteristics. Centrosomes, which are associated with primary cilia, also have multiple influences on the cell cycle, and they are important in assembling microtubules for the maintenance of the cell’s cytoskeleton and cilia. The cilia of terminally differentiated neurons have been previously examined with respect to length, incidence, and receptors present. However, almost nothing is known about primary cilia in stem cells, progenitors, or differentiated glial cells. Moreover, it is not known how the properties of cilia and centrosomes may vary with cell cycle or proliferative potential, in brain or other tissues. This dissertation focuses first on neurogenesis in the hippocampal subgranular zone (SGZ). The SGZ is one of the few brain regions in mammals that gives rise to a substantial …
Date:
May 2015
Creator:
Bhattarai, Samip Ram
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Characterizing the Molecular Changes of Austrofundulus limnaeus As It Develops Towards and Enters Diapause II
Austrofundulus limnaeus is a species of annual killifish which inhabits ephemeral ponds in South America. The species is able to survive seasonally desiccating ponds due to their ability to produce robust embryos. The embryos of this species are capable of entering a developmental arrest, termed diapause II, which precedes the onset of drought. While in this arrested state embryos exhibit the greatest tolerance to anoxia of any characterized vertebrate at 25ºC. Furthermore, when raised at 30ºC, embryos escape the entrance to diapause II and go on to develop directly. Currently, little is known about the molecular mechanisms which induce and maintain this developmentally arrested state. In this study I have developed methods to analyze changes in histone modifications in the context of diapause II. Histone modifications were chosen due to their extreme conservation and well characterized role as modulators of gene expression in other systems. Results utilizing adapted immunobased assays show significant changes in the global amount of H3S10P, H3K27me and H3K4me, as the embryos progress from early embryogenesis through the exit of diapause. Additionally, it is revealed that there exists a degree of phenotypic plasticity with regards to the entrance into diapause II which is modulated by the environment …
Date:
December 2015
Creator:
Toni, Lee S.
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Co-Creating Value in Video Games: The Impact of Gender Identity and Motivations on Video Game Engagement and Purchase Intentions
When games were first developed for in-home use, they were primarily targeted almost exclusively at children and males. However, today’s marketplace manifests a more diverse population plays Internet-enabled games that can be played virtually anywhere. The average gamer is now 30 years old. Many gamers, obviously, are much older. Yet more strikingly, and more germane to this study’s purpose, 47% of the U.S. gamer population is female, as compared to 40% in 2010. Despite these trends the gaming industry remains a male-dominated culture. The marketer’s job is to facilitate game engagement and to motivate gamers to play. The notion of “engagement” is not new in business. The term was developed in the last decade. Many studies were devoted to understand, explain, and define the term. It suggests that within interactive, dynamic business environments, consumer engagement (CE) represents a strategic position that companies can use to enhance their sales growth, competitive advantage, and profitability. Moreover, there are three levels of engagement in any experiential consumption (i.e., playing video game): presence, flow, and psychological absorption. The findings of this study affirm that consumer engagement, including presence, flow and psychological absorption are explanatory factors that impact gamer’s purchase intentions. Our results show that …
Date:
May 2015
Creator:
Alhidari, Abdullah
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Cognitive Performance as a Function of Sleep Disturbance in the Postpartum Period
New mothers often complain of impaired cognitive functioning, and it is well documented that women experience a significant increase in sleep disturbance after the birth of a child. Sleep disturbance has been linked to impaired cognitive performance in several populations, including commercial truck drivers, airline pilots, and medical residents, though this relationship has rarely been studied in postpartum women. In the present study 13 pregnant women and a group of 22 non-pregnant controls completed one week of actigraphy followed by a battery of neuropsychological tests and questionnaires in the last month of pregnancy (Time 1) and again at four weeks postpartum (Time 2). Pregnant women experienced significantly more objective and subjective sleep disturbance than the control group at both time points. They also demonstrated more impairment in objective, but not subjective cognitive functioning. Preliminary analyses indicated increased objective sleep fragmentation from Time 1 to Time 2 predicted decreased objective cognitive performance from Time 1 to Time 2, though small sample size limited the power of these findings. Implications for perinatal women and need for future research were discussed.
Date:
August 2015
Creator:
Wilkerson, Allison K.
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Collaborative Crossover: Identifying Classical Vocal Collaborative Piano Practices in Jazz Vocal Accompanying
Classical vocal collaborative piano and jazz vocal accompaniment are well-established fields with long-standing performance traditions. Classical collaborative performance practices have been researched and codified, but jazz accompanying practices largely remain in the domain of aural tradition. Both classical and jazz accompaniment share associated practices, such as rubato, transposition, and attention to lyric diction and inflection, but there is little previous investigation into the idea that classical collaborative practices might apply to jazz accompanying. This research examines jazz piano accompanying practices in sung verses of standard tunes to demonstrate how accomplished jazz pianists intuitively use many of the same techniques as classical collaborative pianists to create balance with singers. Through application of expressive microtiming analysis to graphical displays of transcribed recorded performances, a strong correlation is established between the classical and jazz vocal accompanying traditions. Linking classical practices to jazz potentially creates a foundation for jazz accompanying pedagogy.
Date:
August 2015
Creator:
Morgenroth, David Jonathan
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Combinatorial Assessment of the Influence of Composition and Exposure Time on the Oxidation Behavior and Concurrent Oxygen-induced Phase Transformations of Binary Ti-x Systems
The relatively low oxidation resistance and subsequent surface embrittlement have often limited the use of titanium alloys in elevated temperature structural applications. Although extensive effort is spent to investigate the high temperature oxidation performance of titanium alloys, the studies are often constrained to complex technical titanium alloys and neither the mechanisms associated with evolution of the oxide scale nor the effect of oxygen ingress on the microstructure of the base metal are well-understood. In addition lack of systematic oxidation studies across a wider domain of the alloy composition has complicated the determination of composition-mechanism-property relationships. Clearly, it would be ideal to assess the influence of composition and exposure time on the oxidation resistance, independent of experimental variabilities regarding time, temperature and atmosphere as the potential source of error. Such studies might also provide a series of metrics (e.g., hardness, scale, etc) that could be interpreted together and related to the alloy composition. In this thesis a novel combinatorial approach was adopted whereby a series of compositionally graded specimens, (Ti-xMo, Ti-xCr, Ti-xAl and Ti-xW) were prepared using Laser Engineered Net Shaping (LENS™) technology and exposed to still-air at 650 °C. A suite of the state-of-the-art characterization techniques were employed to assess …
Date:
May 2015
Creator:
Samimi, Peyman
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Community-based Participatory Research: HIV in African American Men Who Have Sex with Men
To date, traditional behavioral interventions have done little to reduce the prevalence and transmission of HIV among African American men who have sex with men (AAMSM), a highly at risk group. Some researchers theorize that the lack of success may be because these interventions do not address contextual factors among AAMSM. Community-based participatory research (CBPR) is one approach to research with the potential to lead to effective interventions in the future. CBPR is a collaborative, mixed-methods and multidisciplinary, approach to scientific inquiry, which is conducted with, and within, the community. The current study follows the CBPR approach to engage and develop a relationship with the African American communities in the Dallas/Fort Worth Metroplex. Contextual issues were discussed in order to identify emerging themes regarding HIV health related issues among AAMSM to provide the groundwork for continued CBPR research and future interventions with AAMSM in the Dallas/Fort Worth Metroplex. To accomplish this goal, researchers began the CBPR process by conducting interviews and focus groups with a sample of approximately 62 (34 from key informant interviews, 28 from focus groups [gender balanced]) AIDS service organization leaders and workers, advocates, medical doctors and community members with first-hand knowledge of HIV health issues in …
Date:
August 2015
Creator:
Miller, James MS
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
The Comparative Analysis of Slovakian Folk Elements From Béla Bartók’s for Children in Paul Schoenfield’s Slovakian Children’s Songs
Paul Schoenfield’s Slovakian Children’s Songs for flute and piano is a unique work in the flute repertoire, incorporating Slovakian folk quotes from Béla Bartók’s For Children (Volume II, Based on Slovakian Folk Tunes) with layers of Slovakian folk elements used in the overall texture. The primary objective of this dissertation is to expand the limited resources available to flutists regarding Slovakian Children’s Songs. Detailed comparative analysis will demonstrate both Paul Schoenfield’s use of Slovakian folk tunes in the piece and his compositional style. In addition, this dissertation will develop the performer’s understanding of the work through background information, comparative analysis, and interviews to encourage insightful and informed performance. The dissertation’s purpose will be achieved through examining 1) the life, historical, and musical background of Paul Schoenfield and Slovakian Children’s Songs, as well that of Béla Bartók and For Children, and 2) how Schoenfield quotes and arranges Bartók’s For Children by providing a comparative analysis. Interviews with both the composer and Carol Wincenc will be included in the dissertation along with performance suggestions received directly from Carol Wincenc in the appendix.
Date:
August 2015
Creator:
Son, Kristyn Hyun
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
A Comparative Analysis of State Funds on Student Achievement of Economically Disadvantaged Elementary Schools in Independent School Districts and Charter Schools in the State of Texas
The purpose of this study was to evaluate the relationship between the instructional outcomes in the independent school districts and charter schools in relation to the expenditure of public funds for instruction and total operating expenditures from the general fund. The study considered Texas elementary charter schools and independent school districts, whose school populations were identified as having greater than or equal to 50% of economically disadvantaged students, according to the Texas Academic Excellence Indicator System (AEIS). The study made use of multiple regression and was an ex post facto cross-sectional analysis utilizing production function theory. The study’s outcomes reported the difference in student achievement between elementary schools in independent public school districts and charter schools were small to negligible for math and reading achievement. The study also reported, there is no statistically significant difference in per pupil expenditure of public funds between elementary schools in independent public school districts and charter schools. Furthermore, there is no statistically significant relationship between student achievement and per pupil expenditure of public funds on elementary schools in independent public school districts and charter schools.
Date:
May 2015
Creator:
Applewhite, Gary
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Comparing Three Effect Sizes for Latent Class Analysis
Traditional latent class analysis (LCA) considers entropy R2 as the only measure of effect size. However, entropy may not always be reliable, a low boundary is not agreed upon, and good separation is limited to values of greater than .80. As applications of LCA grow in popularity, it is imperative to use additional sources to quantify LCA classification accuracy. Greater classification accuracy helps to ensure that the profile of the latent classes reflect the profile of the true underlying subgroups. This Monte Carlo study compared the quantification of classification accuracy and confidence intervals of three effect sizes, entropy R2, I-index, and Cohen’s d. Study conditions included total sample size, number of dichotomous indicators, latent class membership probabilities (γ), conditional item-response probabilities (ρ), variance ratio, sample size ratio, and distribution types for a 2-class model. Overall, entropy R2 and I-index showed the best accuracy and standard error, along with the smallest confidence interval widths. Results showed that I-index only performed well for a few cases.
Date:
December 2015
Creator:
Granado, Elvalicia A.
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Complex Numbers in Quantum Theory
In 1927, Nobel prize winning physicist, E. Schrodinger, in correspondence with Ehrenfest, wrote the following about the new theory: “What is unpleasant here, and indeed directly to be objected to, is the use of complex numbers. Psi is surely fundamentally a real function.” This seemingly simple issue remains unexplained almost ninety years later. In this dissertation I elucidate the physical and theoretical origins of the complex requirement. I identify a freedom/constraint situation encountered by vectors when, employed in accordance with adopted quantum representational methodology, and representing angular momentum states in particular. Complex vectors, quite simply, provide more available adjustable variables than do real vectors. The additional variables relax the constraint situation allowing the theory’s representational program to carry through. This complex number issue, which lies at the deepest foundations of the theory, has implications for important issues located higher in the theory. For example, any unification of the classical and quantum accounts of the settled order of nature, will rest squarely on our ability to account for the introduction of the imaginary unit.
Date:
August 2015
Creator:
Maynard, Glenn
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Computational Methods for Discovering and Analyzing Causal Relationships in Health Data
Publicly available datasets in health science are often large and observational, in contrast to experimental datasets where a small number of data are collected in controlled experiments. Variables' causal relationships in the observational dataset are yet to be determined. However, there is a significant interest in health science to discover and analyze causal relationships from health data since identified causal relationships will greatly facilitate medical professionals to prevent diseases or to mitigate the negative effects of the disease. Recent advances in Computer Science, particularly in Bayesian networks, has initiated a renewed interest for causality research. Causal relationships can be possibly discovered through learning the network structures from data. However, the number of candidate graphs grows in a more than exponential rate with the increase of variables. Exact learning for obtaining the optimal structure is thus computationally infeasible in practice. As a result, heuristic approaches are imperative to alleviate the difficulty of computations. This research provides effective and efficient learning tools for local causal discoveries and novel methods of learning causal structures with a combination of background knowledge. Specifically in the direction of constraint based structural learning, polynomial-time algorithms for constructing causal structures are designed with first-order conditional independence. Algorithms of …
Date:
August 2015
Creator:
Liang, Yiheng
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Computational Methods for Vulnerability Analysis and Resource Allocation in Public Health Emergencies
POD (Point of Dispensing)-based emergency response plans involving mass prophylaxis may seem feasible when considering the choice of dispensing points within a region, overall population density, and estimated traffic demands. However, the plan may fail to serve particular vulnerable sub-populations, resulting in access disparities during emergency response. Federal authorities emphasize on the need to identify sub-populations that cannot avail regular services during an emergency due to their special needs to ensure effective response. Vulnerable individuals require the targeted allocation of appropriate resources to serve their special needs. Devising schemes to address the needs of vulnerable sub-populations is essential for the effectiveness of response plans. This research focuses on data-driven computational methods to quantify and address vulnerabilities in response plans that require the allocation of targeted resources. Data-driven methods to identify and quantify vulnerabilities in response plans are developed as part of this research. Addressing vulnerabilities requires the targeted allocation of appropriate resources to PODs. The problem of resource allocation to PODs during public health emergencies is introduced and the variants of the resource allocation problem such as the spatial allocation, spatio-temporal allocation and optimal resource subset variants are formulated. Generating optimal resource allocation and scheduling solutions can be computationally hard …
Date:
August 2015
Creator:
Indrakanti, Saratchandra
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Computational Modeling of Small Molecules
Computational chemistry lies at the intersection of chemistry, physics, mathematics, and computer science, and can be used to explain the behavior of atoms and molecules, as well as to augment experiment. In this work, computational chemistry methods are used to predict structural and energetic properties of small molecules, i.e. molecules with less than 60 atoms. Different aspects of computational chemistry are examined in this work. The importance of examining the converged orbitals obtained in an electronic structure calculation is explained. The ability to more completely describe the orbital space through the extrapolation of energies obtained at increasing quality of basis set is investigated with the use of the Sapporo-nZP-2012 family of basis set. The correlation consistent Composite Approach (ccCA) is utilized to compute the enthalpies of formation of a set of molecules and the accuracy is compared with the target method, CCSD(T,FC1)/aug-cc-pCV∞Z-DK. Both methodologies are able to produce computed enthalpies of formation that are typically within 1 kcal mol-1 of reliable experiment. This demonstrates that ccCA can be used instead of much more computationally intensive methods (in terms of memory, processors, and time required for a calculation) with the expectation of similar accuracy yet at a reduced computational cost. The …
Date:
December 2015
Creator:
Weber, Rebecca J.
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Computational Studies of C–H/C–C Manipulation Utilizing Transition Metal Complexes
Density Functional Theory (DFT) is an effective tool for studying diverse metal systems. Presented herein are studies of a variety of metal systems, which can be applied to accomplish transformations that are currently difficult/impossible to achieve. The specific topics studied utilizing DFT include: 1) C–H bond activation via an Earth-abundant transition metal complex, 2) C–H bond deprotonation via an alkali metal superbase, 3) and amination/aziridination reactions utilizing a CuI reagent. Using DFT, the transformation to methanol (CH3OH) from methane (CH4) was examined. The transition metal systems studied for this transformation included a model FeII complex. This first-row transition metal is an economical, Earth-abundant metal. The ligand set for this transformation includes a carbonyl ligand in one set of complexes as well as a phosphite ligand in another. The 3d Fe metal shows the ability to convert alkyls/aryls to their oxidized counterpart in an energetically favorable manner. Also, “superbasic” alkali metal amides were investigated to perform C—H bond cleavage. Toluene was the substrate of interest with Cs chosen to be the metal of interest because of the highly electropositive nature of this alkali metal. These highly electrophilic Cs metal systems allow for very favorable C—H bond scission with a toluene substrate. …
Date:
May 2015
Creator:
Pardue, Daniel B.
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Conquering the Natural Frontier: French Expansion to the Rhine River During the War of the First Coalition, 1792-1797
After conquering Belgium and the Rhineland in 1794, the French Army of the Sambre and Meuse faced severe logistical, disciplinary, and morale problems that signaled the erosion of its capabilities. The army’s degeneration resulted from a revolution in French foreign policy designed to conquer the natural frontiers, a policy often falsely portrayed as a diplomatic tradition of the French monarchy. In fact, the natural frontiers policy – expansion to the Rhine, the Pyrenees, and the Alps – emerged only after the start of the War of the First Coalition in 1792. Moreover, the pursuit of natural frontiers caused more controversy than previously understood. No less a figure than Lazare Carnot – the Organizer of Victory – viewed French expansion to the Rhine as impractical and likely to perpetuate war. While the war of conquest provided the French state with the resources to survive, it entailed numerous unforeseen consequences. Most notably, the Revolutionary armies became isolated from the nation and displayed more loyalty to their commanders than to the civilian authorities. In 1797, the Sambre and Meuse Army became a political tool of General Lazare Hoche, who sought control over the Rhineland by supporting the creation of a Cisrhenan Republic. Ultimately, …
Date:
December 2015
Creator:
Hayworth, Jordan R.
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
A Construct Validity Analysis of the Work Perceptions Profile Data
As work environments become more complex and demanding, organizations are becoming more interested in measuring the impact of their human resource development programs and initiatives. With this increased attention on data and measurement, human resource professionals have been encouraged to utilize data collection and data analysis techniques to make more objective and rationale human capital decisions and to verify business impact. As a result, the human resource profession has seen a significant increase in the use of surveys to measure anything from training effectiveness to the efficacy of recruitment procedures. The increase in the use of survey instruments requires that more focused attention is placed on the reliability and validity of data from any instrument used to make important human resource and business decisions. One instrument that is currently being used to measure career plateaus and job fit is the Work Perceptions Profile. The purpose of this research study was to conduct a construct validity analysis of the Work Perceptions Profile data and to determine the factor structure of data from its items. The data in this analysis supported a two-factor model structure with the first factor measuring Work Characteristics and a second factor measuring Performance. The results of this …
Date:
May 2015
Creator:
Frear, Susan W.
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Contributing Factors in the Development of Complex Post-traumatic Stress Disorder Among Survivors of Interpersonal Violence
An understanding of factors that contribute to Complex Post Traumatic Stress Disorder (CPTSD) is of considerable importance to inform the prevention and treatment of the disorder. Moreover, gaining a better understanding of the factors that contribute to the etiology of CPTSD is of interest since most research to date focuses on the etiology of PTSD. Therefore, the purpose of the current study is to test the hypothesized prediction between childhood exposure to violence, childhood attachment, current interpersonal factors, and CPTSD symptoms. Using data from a community clinic and shelter serving victims of domestic violence and sexual assault, a partial least squares path analysis approach was employed to test the model’s strength in predicting contributing factors of CPTSD. Results support the proposed model, however, an alternative and more parsimonious model was found to be superior and revealed relationships between interpersonal variables and CPTSD. Specifically, women who reported child abuse and poor attachment with either parent, a perceived lack of current emotional and tangible support, and recent intimate partner violence (IPV) also reported symptoms of CPTSD. However, other variables, such as adult attachment avoidance and anxiety did not influence IPV or CPTSD as expected. Ultimately, the current findings lend support for Herman’s …
Date:
August 2015
Creator:
Marchesani, Estee Simpkins
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Contributions to Descriptive Set Theory
In this dissertation we study closure properties of pointclasses, scales on sets of reals and the models L[T2n], which are very natural canonical inner models of ZFC. We first characterize projective-like hierarchies by their associated ordinals. This solves a conjecture of Steel and a conjecture of Kechris, Solovay, and Steel. The solution to the first conjecture allows us in particular to reprove a strong partition property result on the ordinal of a Steel pointclass and derive a new boundedness principle which could be useful in the study of the cardinal structure of L(R). We then develop new methods which produce lightface scales on certain sets of reals. The methods are inspired by Jackson’s proof of the Kechris-Martin theorem. We then generalize the Kechris-Martin Theorem to all the Π12n+1 pointclasses using Jackson’s theory of descriptions. This in turns allows us to characterize the sets of reals of a certain initial segment of the models L[T2n]. We then use this characterization and the generalization of Kechris-Martin theorem to show that the L[T2n] are unique. This generalizes previous work of Hjorth. We then characterize the L[T2n] in term of inner models theory, showing that they actually are constructible models over direct limit of …
Date:
August 2015
Creator:
Atmai, Rachid
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Convenience to the Cataloger or Convenience to the User?: An Exploratory Study of Catalogers’ Judgment
This mixed-method study explored cataloger’s judgment through the presence of text as entered by catalogers for the 11 electronic resource items during the National Libraries test for Resource Description and Access (RDA). Although the literature discusses cataloger’s judgment and suggests that cataloging practice based on new cataloging code RDA will more heavily rely on cataloger’s judgment, the topic of cataloger’s judgment in RDA cataloging was not formally studied. The purpose of this study was to study the differences and similarities in the MARC records created as a part of the RDA National Test and to determine if the theory of bounded rationality could explain cataloger’s judgment based on the constructs of cognitive and temporal limits. This goal was addressed through a content analysis of the MARC records and various statistical tests (Pearson’s Chi-square, Fisher’s Exact, and Cramer’s V). Analysis of 217 MARC records was performed on seven elements of the bibliographic record. This study found that there were both similarities and differences among the various groups of participants, and there are indications that both support and refute the assertion that catalogers make decisions based on the constructs of time and cognitive ability. Future research is needed to be able to …
Date:
May 2015
Creator:
Hasenyager, Richard Lee, Jr.
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Critical Study of Two Piano Transcriptions by August Stradal and the Transcriptions’ Sources: Alterations to the Score Based on Historical Evidence and Artistic Judgment
The fact that a number of pianists of the past two centuries adapted, embellished, and rearranged piano works for performance, be these original works or transcriptions, has been well documented throughout history. This thought, in addition to the fact that Stradal’s scores needed revision, encouraged me to make alterations to Stradal’s transcriptions and served as a strong incentive to write the current study. In it, I will comment on the alterations performed to segments of Stradal’s piano transcriptions of Wagner’s Schluβ der letzten Aufzuges (End of the last Act) from Siegfried and Trauermusik aus dem letzten Aufzug (Siegfried’s Funeral March) from Götterdämmerung. These changes have the purpose of reflecting in the piano as closely as possible the sonorous reality of the transcriptions’ operatic sources and, by doing so, making Stradal’s arrangements more effective for performance.
Date:
May 2015
Creator:
Vizcarra, Juan Guillermo
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Cross-cultural Differences in the Presentation of Depressive Symptoms
Epidemiological studies show that China has a lower prevalence rate of major depression than that of Western countries. The disparity in prevalence is commonly attributed to the tendency of Chinese to somatize depression. Empirical evidence of Chinese somatization has yielded mixed results. The present study thus aimed to 1) examine differences in somatic and psychological symptom reporting between Chinese from Macau and Americans in America and 2) identify cultural and psychological variables that would predict somatization. Independent and interdependent self-construals, sociotropy, and emotional approach coping were hypothesized to predict somatization of depression. Participants included 353 Chinese and 491 American college students who completed self-report measures online. Contrary to prediction, results indicated that Americans endorsed a higher proportion of somatic symptoms than Chinese did. Sociotropy predicted both relative endorsement and severity of somatic symptoms for the American sample, whereas emotional expression coping was related to somatization in the Chinese sample. The findings challenge the common assumption of greater Chinese somatization and highlight the importance of context in understanding the relationships between somatization and cultural and psychological variables. Implications of the present study and future directions are discussed.
Date:
May 2015
Creator:
Tse, Pui San
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library