You limited your search to:

  Partner: UNT Libraries
 Collection: UNT Theses and Dissertations
A Study of Silver: an Alternative Maldi Matrix for Low Weight Compounds and Mass Spectrometry Imaging

A Study of Silver: an Alternative Maldi Matrix for Low Weight Compounds and Mass Spectrometry Imaging

Date: May 2014
Creator: Walton, Barbara Lynn
Description: Soft-landing ion mobility has applicability in a variety of areas. The ability to produce material and collect a sufficient amount for further analysis and applications is the key goal of this technique. Soft-landing ion mobility has provided a way to deposit material in a controllable fashion, and can be tailored to specific applications. Changing the conditions at which soft-landing ion mobility occurs effects the characteristics of the resulting particles (size, distribution/coverage on the surface). Longer deposition times generated more material on the surface; however, higher pressures increased material loss due to diffusion. Larger particles were landed when using higher pressures, and increased laser energy at ablation. The utilization of this technique for the deposition of silver clusters has provided a solvent free matrix application technique for MALDI-MS. The low kinetic energy of incident ions along with the solvent free nature of soft-landing ion mobility lead to a technique capable of imaging sensitive samples and low mass analysis. The lack of significant interference as seen by traditional organic matrices is avoided with the use of metallic particles, providing a major enhancement in the ability to analyze low mass compounds by MALDI.
Contributing Partner: UNT Libraries
Remembering the Forgotten D-day: the Amphibious Landing at Collado Beach During the Mexican War

Remembering the Forgotten D-day: the Amphibious Landing at Collado Beach During the Mexican War

Date: May 2014
Creator: Menking, Christopher N.
Description: The current historiography of the Mexican War does not give due credit to the significance of the landing at Collado Beach. No one source addresses all aspects of the landing, nor have any included an analysis of the logistical side of the operation. This thesis presents a comprehensive analysis of the operation from conception to execution in an attempt to fill the gap in the historiography. Additionally, the lessons learned and lessons forgotten from this landing are addressed as to how this landing shaped American military doctrine regarding joint operations and amphibious operations. The conclusion drawn from the historical sources supports the argument that this operation had a significant impact on the American military. The influence of this operation shows itself throughout American military history, including the establishment of amphibious doctrine by the Unites States Marine Corps and during World War II.
Contributing Partner: UNT Libraries
Does Underwriter Size Matter?  Only Within the Right Context

Does Underwriter Size Matter? Only Within the Right Context

Date: May 2014
Creator: Kendall, Lynn K.
Description: The initial matching relationships between underwriters and bonds/issuing firms and the certification quality of underwriters, as determined by changes in the issuing firm’s financial strength post issue, are the two primary research topics in this dissertation. Based on total underwriter syndicate market share, two distinct categories, low market power (LMP) syndicates and high market power (HMP) syndicates were defined. Firm financial strength is examined based on a new factor developed in this research. A comparison of the two underwriting categories, or pools, indicates that the HMP underwriters take on firms of lower initial financial strength and additionally, the issuing firms decline more in financial strength two years following bond issuance than do firms using LMP underwriters. Notwithstanding these results, the more interesting findings are the relationships within each of these pools. In the LMP pool of underwriters, financially stronger firms used the larger LMPs to underwrite their bonds, while the weaker firms used smaller LMPs. In contrast, among HMP underwriters, the largest HMPs aligned with the firms of relatively lower financial strength. The relationships in both pools reverse when changes in financial strength are examined. Larger LMPs are associated with greater issuing firm financial decline while larger HMPs correlate with ...
Contributing Partner: UNT Libraries
“Werewolves and Time Machines”

“Werewolves and Time Machines”

Date: May 2014
Creator: Edwards, Frisco
Description: This collection consists of a critical preface and five short stories. The preface considers the use of the fantastical in fiction and how it works as a tool to reach readers in comparison with realistic fiction. The stories investigate this in by following several strange characters put in everyday human situations.
Contributing Partner: UNT Libraries
Harold Shapero’s Sonata for C Trumpet and Piano: the Influence of Idiomatic Jazz Elements on a Prominent Mid-20th Century Neo-classical Composer

Harold Shapero’s Sonata for C Trumpet and Piano: the Influence of Idiomatic Jazz Elements on a Prominent Mid-20th Century Neo-classical Composer

Date: August 2013
Creator: Whalen, Kevin Patrick
Description: Harold Shapero’s Sonata for Trumpet in C and Piano is a significant work that it is rarely performed and studied. Shapero’s composition contains musical attributes that demand artistically accurate choices if the style of this jazz-influenced sonata is to be achieved. Written in 1940 in dedication to Aaron Copland, the Sonata for C Trumpet and Piano makes use of a variety of stylistic influences, blending those of early 20th century jazz with Stravinsky-influenced neo-classicism. The intent of this study is to examine the unique performance practice implications and musical considerations of Harold Shapero’s Sonata for C Trumpet and Piano in correlation to the composer’s implementation of jazz idiomatic elements within the constructs of neo-classicism. The first section of this study examines the historical context necessary for understanding the social and musical conditions of the early to mid 1940s. The second section addresses the musical elements that characterize this work; the primary focus of this section is an exploration of Harold Shapero’s implementation of jazz idioms into his first composition for trumpet. The final section of the study interprets the utilization of idiomatic jazz elements within the work so as to allow the trumpet player with little jazz experience to accurately ...
Contributing Partner: UNT Libraries
Utilizing North American Art Song Settings of Psalm Texts in Worship Services: an Annotated Guide for Singers, Voice Instructors, and Music Ministers

Utilizing North American Art Song Settings of Psalm Texts in Worship Services: an Annotated Guide for Singers, Voice Instructors, and Music Ministers

Date: May 2014
Creator: Siddons, Kyle
Description: This dissertation provides a guide for appropriate use of North American art song settings of biblical psalms for solo voice written after 1950 in the worship services of Christian faiths. The songs analyzed are for all voice parts and a variety of accompanying ensembles. The placement of each song on a specific calendar day is guided by the individual church calendars and lectionaries, on the prevalent themes of the text, and the characteristics of the musical setting. Performance of these songs only in a concert setting limits their usefulness for singers, voice teachers, and music directors alike. A new and worthy performing context can be established by analyzing the text and musical settings.
Contributing Partner: UNT Libraries
The Ultimate Ethos: Challenges, Cooptation and Survival During Ultimate’s Adolescence

The Ultimate Ethos: Challenges, Cooptation and Survival During Ultimate’s Adolescence

Date: August 2013
Creator: Brooks, David
Description: Ultimate is the fastest growing field sport in America. Created in 1968, forty-five years later the sport was still on the periphery of the mainstream but reached new heights in 2013 – two professional leagues, over 800 college teams and a broadcasting deal with ESPN – and the discussions throughout the sports’ history have never been as relevant. Self-officiation and the Spirit of the Game are the main tenets that make up the ethos of the sport and its community. These unique aspects differentiate Ultimate’s predominate culture from that of mainstream sports culture. This study shows the countercultural ties and survival of the ethos during the adolescent period of Ultimate’s evolution (1987-2010). It examines the progression of the community’s established grassroots culture and the governing body of the sport alongside the influx of young players with mainstream sports attitudes who bolstered certain organizers’ attempts to alter Ultimate in the hopes of gaining “legitimacy” through adding third-party officials, commercialization and corporate sponsorship.
Contributing Partner: UNT Libraries
Using Complexity Thinking to Build Adaptive Capacity in Schools: an Analysis of Organizational Change in California

Using Complexity Thinking to Build Adaptive Capacity in Schools: an Analysis of Organizational Change in California

Date: May 2014
Creator: Martin, Teddi Eberly
Description: In response to reductionist neoliberal approaches to organizational change that have been prevalent in American education since the 1980s, some educators have begun to employ a whole-systems approach to improving student learning. These approaches, based in complexity sciences, recognize the nonlinear, unpredictable nature of learning and the interconnected relationships among myriad factors that influence the teaching/learning that occurs in schools. In the summer preceding the 2011-2012 school year, a cohort of educators from California Unified School District participated in a 10-day training regarding human systems dynamics (HSD) and complexity thinking. Their goal was to build adaptive capacity throughout the district in the pursuit of improving student learning. Through analysis of the interviews from seven target participants from this training, this study investigates what target participants report regarding their use of HSD methods and models in their work in schools across the 2011-2012 school year. Findings indicate that target participants displayed distinct arcs of use of HSD methods/models. In addition, findings suggest that target participants’ need for support in learning and implementing HSD methods/models, the influence of systemic and individual history, and the role of agency affected their “arcs of use.” This study illuminates the ways in which HSD methods/models support ...
Contributing Partner: UNT Libraries
Internet Health Information and Patient-health Professional Relationship

Internet Health Information and Patient-health Professional Relationship

Date: August 2013
Creator: Williams, TimMarie Chloe’ Uvonne
Description: The purpose of this study was to investigate patient use and presentation of Internet health information and its effect on patient-health professional relationship from a sample of residents at active adult communities in Texas. Five sites were used to recruit the 260 participants between November 2012 and January 2013. The data were received using a self-administered survey. Using Cronbach’s alpha, logistic regression and regression analysis through SAS, the data revealed that older respondents are less likely to discuss web-based information with health professionals. In addition, logistic regression analysis indicated that four of the variables, IHI Sharing, educational status (bachelor degree), marital status (married), and perceived health status (excellent and very good health) predicted varied of the 20 indicators making up the patient-health professional relationship scale. Further studies are needed to enhance this research.
Contributing Partner: UNT Libraries
Implications of Punctuation Mark Normalization on Text Retrieval

Implications of Punctuation Mark Normalization on Text Retrieval

Date: August 2013
Creator: Kim, Eungi
Description: This research investigated issues related to normalizing punctuation marks from a text retrieval perspective. A punctuated-centric approach was undertaken by exploring changes in meanings, whitespaces, words retrievability, and other issues related to normalizing punctuation marks. To investigate punctuation normalization issues, various frequency counts of punctuation marks and punctuation patterns were conducted using the text drawn from the Gutenberg Project archive and the Usenet Newsgroup archive. A number of useful punctuation mark types that could aid in analyzing punctuation marks were discovered. This study identified two types of punctuation normalization procedures: (1) lexical independent (LI) punctuation normalization and (2) lexical oriented (LO) punctuation normalization. Using these two types of punctuation normalization procedures, this study discovered various effects of punctuation normalization in terms of different search query types. By analyzing the punctuation normalization problem in this manner, a wide range of issues were discovered such as: the need to define different types of searching, to disambiguate the role of punctuation marks, to normalize whitespaces, and indexing of punctuated terms. This study concluded that to achieve the most positive effect in a text retrieval environment, normalizing punctuation marks should be based on an extensive systematic analysis of punctuation marks and punctuation patterns and ...
Contributing Partner: UNT Libraries