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 Degree Level: Doctoral
 Collection: UNT Theses and Dissertations
Analysis of Biological Materials Using a Nuclear Microprobe

Analysis of Biological Materials Using a Nuclear Microprobe

Date: December 2014
Creator: Mulware, Stephen Juma
Description: The use of nuclear microprobe techniques including: Particle induced x-ray emission (PIXE) and Rutherford backscattering spectrometry (RBS) for elemental analysis and quantitative elemental imaging of biological samples is especially useful in biological and biomedical research because of its high sensitivity for physiologically important trace elements or toxic heavy metals. The nuclear microprobe of the Ion Beam Modification and Analysis Laboratory (IBMAL) has been used to study the enhancement in metal uptake of two different plants. The roots of corn (Zea mays) have been analyzed to study the enhancement of iron uptake by adding Fe (II) or Fe (III) of different concentrations to the germinating medium of the seeds. The Fe uptake enhancement effect produced by lacing the germinating medium with carbon nanotubes has also been investigated. The aim of this investigation is to ensure not only high crop yield but also Fe-rich food products especially from calcareous soil which covers 30% of world’s agricultural land. The result will help reduce iron deficiency anemia, which has been identified as the leading nutritional disorder especially in developing countries by the World Health Organization. For the second plant, Mexican marigold (Tagetes erecta), the effect of an arbuscular mycorrhizal fungi (Glomus intraradices) for the ...
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Analysis of Texas Education Agency Commissioner of Education Decisions Regarding Superintendent, Associate Superintendent, School Administrator, Athletic Director and Central Office Administrator Term Contract Nonrenewal Appeals From 1983 to 2013

Analysis of Texas Education Agency Commissioner of Education Decisions Regarding Superintendent, Associate Superintendent, School Administrator, Athletic Director and Central Office Administrator Term Contract Nonrenewal Appeals From 1983 to 2013

Date: December 2014
Creator: Ramirez, Carlos
Description: I conducted a legal analysis of decisions by Texas Commissioners of Education in appeals by Texas school administrators from nonrenewal decisions made by Texas school districts from 1983 to 2013. I analyzed the findings of fact and conclusions of law described in the commissioners’ rulings to determine the legal basis of school districts’ decisions to nonrenew school administrators’ term employment contracts. I also examined the legal rationale for commissioners’ rulings and determined which party most commonly prevailed in these administrative proceedings—the respondent school district or the petitioner school administrator. In particular, the study determined factors that contributed to commissioners’ decisions to overrule or support school districts’ nonrenewal decisions. A careful review of commissioner decisions, which are accessible on the Texas Education Association website, identified 44 commissioner decisions involving appeals by superintendents, associate superintendents, public school administrators, athletic directors, or central office administrators concerning school districts’ term contract nonrenewal decisions from 1983 to 2013. Commissioners’ decisions in these cases were surveyed using legal research methods. This study provides recommendations to assist local education agencies to refine current policies and regulations regarding the nonrenewal of administrators’ term contracts, and provides insight on Texas Commissioners’ rulings on term contract nonrenewal appeals brought by ...
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The Application of Common-practice Elements in Modern Music: Examining Examples of Musical Continuity in Selected Piano Works of James R Wintle

The Application of Common-practice Elements in Modern Music: Examining Examples of Musical Continuity in Selected Piano Works of James R Wintle

Date: December 2014
Creator: Kim, Sung-Yun
Description: The purpose of this dissertation is to analyze the ways in which distinguished American composer James RayWintle (1942-2013) addresses the problem of formal unity and incorporates previous musical styles in his post-tonal compositions. Because post-tonal music lacks many of the pillars that create tonal structure, it can be difficult for a composer to maintain a sense of form when writing in this style. Wintle attempts to circumvent this issue by incorporating common-practice elements, such as formal sections, familiar stylistic gestures, and referential-pitch organization into his works. For this analysis, the author has selected three of Wintle’s piano compositions that best represent his compositional approach and diverse techniques: Album Leaves - A Set of Five Character Pieces for Piano (2001), Scherzino (Street Scenes of Ovada) for Solo Piano (2010), and Four Miniatures for Piano Four Hands (2003). Wintle’s artistic style borrows extensively from Western classical music, encompassing various historical periods and quoting several major composers. Additionally, he incorporates a variety of musical styles into his chamber works and those for solo piano. These range from the dance suites of the French Baroque and Brahmsian-character pieces to American ragtime. This research also describes Wintle’s compositional style and his borrowing of 18th- and ...
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Bank Capital, Efficient Market Hypothesis, and Bank Borrowing During the Financial Crisis of 2007 and 2008

Bank Capital, Efficient Market Hypothesis, and Bank Borrowing During the Financial Crisis of 2007 and 2008

Access: Use of this item is restricted to the UNT Community.
Date: December 2014
Creator: Zia, Mujtaba
Description: During the Great Recession of 2007 and 2008, liquidity and credit dried up, threatening the stability of financial institutions, particularly the banking firms. Traditional source of funds from the last resort, the Discount Window of the Federal Reserve System, failed to remedy the liquidity problem. To assuage the liquidity and credit problem, the Federal Reserve System established several emergency lending facilities and provided unprecedented amount of loans to the banking industry. Using a dataset published by Bloomberg LLP in the aftermaths of the financial crisis, which contains daily loan balances from the Fed, I conduct an event study to test whether financial markets are efficient in reflecting all public, anticipated and classified information in security prices. The most important contribution of this dissertation to the finance discipline and literature is the investigation and analysis of the Fed’s unprecedented loans to the banking industry during the Great Recession and the market reaction to it. The second major contribution of this study is the empirical test of strong form efficient market hypothesis, which has not been feasible due to legal data challenges. This dissertation has other contributions to the finance discipline and banking research. First, I develop an algorithm for measuring the ...
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Béla Bartók’s Editorial Input As Seen in His Edition of Piano Sonata Hobxvi:49 in E Flat Major by Joseph Haydn

Béla Bartók’s Editorial Input As Seen in His Edition of Piano Sonata Hobxvi:49 in E Flat Major by Joseph Haydn

Date: December 2014
Creator: Cho, So Young
Description: Béla Bartók (1881-1945), one of the twentieth century’s most significant composers, is also well known as an ethnomusicologist and concert pianist. However, Bartók’s work as a pedagogue and as an editor has received relatively little scholarly attention, despite famous pupils and despite his preparation of numerous critical and educational editions of his own and others’ works. While the critical editions are few, a significant number of Bartók’s editions of piano works have an educational purpose; these editions contain highly detailed performing indications and hold substantial potential for investigating Bartók’s ideas on the performance of works by other composers. Bartók edited nineteen piano sonatas by Haydn for educational purposes between 1911 and 1920. Bartók’s edition of Haydn’s Piano Sonata Hob.XVI:49 in E-flat Major is compared with both the first edition and the facsimile of the manuscript, with a focus on articulation, pedaling, dynamics, fingering, and other significant markings such as indications of expression and ornamentations. This document examines Bartók’s editorial input in this edition as an exemplar of his stylistic principles, and explores the value of Bartók’s Haydn editions as performing editions by critically examining both his editorial contributions and possible execution issues. This study thus provides an understanding of Bartók’s ...
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Breaking the Doubler Barrier: Using Sy Brandon’sDivertissement to Demonstrate a Practical Approach to Performing Multiple WoodwindWorks

Breaking the Doubler Barrier: Using Sy Brandon’sDivertissement to Demonstrate a Practical Approach to Performing Multiple WoodwindWorks

Date: December 2014
Creator: Levels, Brian Eugene
Description: Multiple woodwind training is ideal for securing certain types of employment; however, with so many different instruments, performance standards on each are difficult to maintain. Furthermore, for many multiple woodwind players, proficiency on all woodwinds ceases to be a top priority after graduation, even though they continue to market themselves as highly proficient on all of these instruments. The problem for most begins with what it means to be proficient on each instrument. The technical demands of multiple woodwind performance vary widely, but often a performance calls for complete proficiency on a variety of instruments. Multiple woodwind players who lack in professional level proficiency damage the credibility of the field and jeopardize employment opportunities for others. This study aims to address the common problems involving proficiency and to help multiple woodwind players, band directors, and doublers become familiar with and overcome these common pitfalls. Sy Brandon’s Divertissement provides an outstanding platform to address problems and provide solutions for multiple wind players, band directors, and doublers. This dissertation serves as a multiple woodwind specialist’s resource for maximum efficiency in learning and playing repertoire that involves multiple woodwinds, such as musicals, and other multiple woodwind genres.
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Business/it Alignment: the Impact of Incentive Plans on the Development of Shared Vision

Business/it Alignment: the Impact of Incentive Plans on the Development of Shared Vision

Access: Use of this item is restricted to the UNT Community.
Date: December 2014
Creator: Johnson, Vess L.
Description: This study, utilizing Preston and Karahanna’s framework for shared vision development and Agency Theory, explores the impact of vision development factors and factors associated with incentive plans on shared vision and alignment. Results of the study confirm the strong relationship between shared vision and alignment, and indicate that having an effective management team is important with respect to developing and maintaining shared vision and alignment within the organization. Several vision development factors such as using the language of the business, participation on the top management team (TMT), and having knowledge of the business impact shared vision through their influence on teamwork. Also, results of this study suggest that participation on the TMT by the CIO/IT leader is more important than the individual’s position in the organizational hierarchy. In addition, attributes associated with incentive plans such as achievable and clear measures, measures linked to organizational goals, measures that align the interests of the individual with those of the organization, regular plan reviews, and using a balanced scorecard approach with respect to incentive plan design positively impact teamwork and shared vision. For practitioners, this highlights the importance of incentive plans as powerful tools that can be used to reinforce shared vision, effective ...
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Characterization of Ionic Liquid Solvents Using a Temperature Independent, Ion-specific Abraham Parameter Model

Characterization of Ionic Liquid Solvents Using a Temperature Independent, Ion-specific Abraham Parameter Model

Date: December 2014
Creator: Stephens, Timothy W.
Description: Experimental data for the logarithm of the gas-to-ionic liquid partition coefficient (log K) have been compiled from the published literature for over 40 ionic liquids over a wide temperature range. Temperature independent correlations based on the Gibbs free energy equation utilizing known Abraham solvation model parameters have been derived for the prediction of log K for 12 ionic liquids to within a standard deviation of 0.114 log units over a temperature range of over 60 K. Temperature independent log K correlations have also been derived from correlations of molar enthalpies of solvation and molar entropies of solvation, each within standard deviations of 4.044 kJ mol-1 and 5.338 J mol-1 K-1, respectively. In addition, molar enthalpies of solvation and molar entropies of solvation can be predicted from the Abraham coefficients in the temperature independent log K correlations to within similar standard deviations. Temperature independent, ion specific coefficients have been determined for 26 cations and 15 anions for the prediction of log K over a temperature range of at least 60 K to within a standard deviation of 0.159 log units.
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Charles Wuorinen’s Flute Variations Ii: an Analysis and Performance Guide

Charles Wuorinen’s Flute Variations Ii: an Analysis and Performance Guide

Date: December 2014
Creator: Dewhirst, Kristan K
Description: Charles Wuorinen’s contributions to contemporary music are significant. He has produced more than 260 compositions in a wide array of genres including pieces for orchestra, opera, ballet, chamber ensemble, and soloists. This document serves as an analysis and performance guide for Charles Wuorinen’s work for solo flute, Flute Variations II. Issues of analysis include serial techniques, time-point nesting, and pitch centricity and provide insight into the compositional style of the composer. As this work exhibits techniques borrowed from traditional shakuhachi performance, this document provides a brief history of the shakuhachi and an overview of the shakuhachi techniques utilized in Flute Variations II. The performance guide provides a pedagogical narrative to aid in the synthesis of conceptual ideas with contemporary techniques.
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Child-centered Play Therapy Parent Services: a Q-methodological Investigation

Child-centered Play Therapy Parent Services: a Q-methodological Investigation

Date: December 2014
Creator: Lee, Kasie R
Description: Child-centered play therapy (CCPT) is an empirically supported and developmentally appropriate counseling intervention for young children. Despite the clinical effectiveness of CCPT with children, no known study has been conducted in which parents were surveyed or interviewed regarding the services they have received as a part of their children’s participation in CCPT. Therefore, this study was designed to gain a better understanding of parents’ reported needs and expectations in CCPT. This study utilized Q-methodology in which participants completed a Q-sort by actively sorting 40 items on a continuum of least important to most important. Items included services and processes regarded by CCPT scholars and child therapy practitioners as being important to working with parents. Data was collected from 19 parents of children receiving CCPT services in a community-based counseling clinic. Participants included 16 females and 3 males; 15 Caucasian and 4 Hispanic; and 14 biological parents, 2 adoptive parents, and 3 other biological caregivers. Data was analyzed using centroid factor analysis, and results revealed a one factor solution representing 18 of the 19 participants. Eighteen parents reported similar beliefs regarding the processes they consider most and least important to their experience in working with child-centered play therapists. In general, parents’ ...
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