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2,295 Matching Results
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Interference Alignment through Propagation Delay
With the rapid development of wireless communication technology, the demands for higher communication rates are increasing. Higher communication rate corresponds to higher DoF. Interference alignment, which is an emerging interference management technique, is able to substantially increase the DoF of wireless communication systems. This thesis mainly studies the delay-based interference alignment technique. The key problem lies in the design of the transmission scheme and the appropriate allocation of the propagation delay, so as to achieve the desired DoF of different wireless networks. In addition, through delay-based interference alignment, the achievability of extreme points of the DoF region of different wireless networks can be proved.
Date:
May 2020
Creator:
Liu, Zhonghao
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
In the Tall Grass West of Town: Racial Violence in Denton County during the Rise of the Second Ku Klux Klan
The aim of this thesis is to narrate and analyze lynching and atypical violence in Denton County, Texas, between 1920 and 1926. Through this intensive study of a rural county in north Texas, the role of law enforcement in typical and systemic violence is observed and the relationship between Denton County Officials and the Ku Klux Klan is analyzed. Chapter 1 discusses the root of the word lynching and submits a call for academic attention to violence that is unable to be categorized as lynching due to its restrictive definition. Chapter 2 chronicles known instances of lynching in Denton County from its founding through the 1920s including two lynchings perpetrated by Klavern 136, the Denton County Klan. Chapter 3 examines the relationship between Denton County Law Enforcement and the Klan. In Chapter 4, seasons of violence are identified and applied to available historical records. Chapter 5 concludes that non-lynching violence, termed "disappearances," occurred and argues on behalf of its inclusion within the historiography of Jim Crow Era criminal actions against Black Americans. In the Prologue and Epilogue, the development and dissolution of the St. John's Community in Pilot Point, Texas, is narrated.
Date:
May 2020
Creator:
Crittenden, Micah Carlson
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Soviet Music as Bricolage: The Case of the Piano Works of Nikolai Rakov (1908-1990)
Much socialist realism art from Soviet-era Russia has been misunderstood by scholars. It has been considered "synthetic art," which ordinary citizens were forced to admire under the Soviet regime. It also has been interpreted as peasant kitsch art because of its seemingly unacademic and unchallenging theoretical language utilized in order to meet the expectations of Soviet communism. This ideology conditioned artists to make art accessible and nationalistic to serve the perceived needs of the Russian proletariat. Nikolai Rakov (1908-1990), a Soviet-era composer, is also all too often received as a second-class socialist realistic composer. There are, however, other approaches to understanding art created in Soviet Union. Within music scholarship, alternative perspectives on Soviet art remain largely unexplored. It is in that spirit that I turn to Rakov, whose works carry his artistic idea of irresistible beauty, elegance, irony and charm. They evoke colorful images and feelings that draw the audience into Rakov's own compositional world despite his reputation of technical simplicity and uninventive language at a glance. In this dissertation, I therefore turn my attention to the aesthetic side of Rakov's music in order to reevaluate his works. In order to achieve this, I develop and utilize a hermeneutical approach …
Date:
May 2020
Creator:
Kumamoto, Yuki
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Student Experiences, Struggles, and Supports in an Alternative School Setting
Experiences of shame, such as feelings of failure, scorn, ridicule, and embarrassment, all impact a student's successful mastery of academic skills. To identify and understand the shame experiences that impact a student's success, as told from the student's perspective, and determine which factors contribute most to student success, the lenses of the shame resiliency theory and self-determination theory were utilized. This phenomenological qualitative research study explored the struggles associated with shame that students who attended and graduated from a school-of-choice alternative school experienced. In addition, it examined the factors, experiences, and/or constructs related to social and emotional well-being and resiliency that students who attended and graduated from a school-of-choice alternative school identified as most salient regarding their ability to progress through their secondary school years, achieve educational success, and ultimately, graduate from high school. The results of this study add to the body of evidence that supports a shift in the education program from a focus on assessment to SE support for the whole child. Addressing students' academic needs are but one piece of the puzzle. Meeting their social and emotional needs may, however, be even more important, both in the short-term and the long-term for all students, regardless of …
Date:
May 2020
Creator:
Hopkins, Lindsey Y
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Improvisation without Accompaniment and What Passes Here for Mountains
"Improvisation without Accompaniment" is a lyric investigation into the ways that an awareness of mutability and death can clarify or distort our experience of the world. The poems in this collection draw upon the speaker's small-town Texas upbringing to explore broader questions that arise as a consequence of his burgeoning awareness of mortality: What are the moral imperatives for an individual citizen in a larger political community? What are the bidirectional effects of our relationship with place and the environment? Given the painful transience of human experience, what does it mean to live a good life? The book is characterized by psychological poems that illustrate the mind's movement, poems that use syntactic variation and tonal shifts to indicate an openness to changes of heart and mind. "What Passes Here for Mountains," an in-progress poetry manuscript, is driven by a similar impulse to explore the precise ways that our beliefs and opinions affect our immediate experience. These newer poems address anxieties about climate change, the effects of childhood trauma on the adults those children become, and the obstacles to self-actualization.
Date:
May 2020
Creator:
Morton, Matthew Travis
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Benjamin Britten's Neglected "Gemini Variations," Op. 73 and Its Place in the Chamber Music Repertoire
In 1964, Benjamin Britten met the multi-instrumentalist twins Zoltán and Gábor Jeney while traveling in Budapest. At their behest, Britten composed Gemini Variations: Twelve Variations and Fugue on an Epigram by Kodály, a work which exploited the brothers' abilities on multiple instruments: Zoltán on flute and piano, and Gábor on violin and piano. In foreseeing the difficulties of programming this work, Britten simultaneously arranged a version for four players: flute, violin, and four-hand piano, eliminating the need for switching instruments. Despite this arrangement, as well as a very public and highly anticipated premiere at the Aldeburgh Festival in 1965, Gemini Variations has remained neglected by performers and scholars alike. This document serves to 1) promote a work that can justifiably be considered as part of the chamber music repertoire involving flute; 2) advocate for its musical merit and appropriateness for chamber music concerts made up of more traditional groups of players; 3) compare the two-player and four-player versions Britten wrote; and 4) explore the likely reasons why a piece by one of the most celebrated composers of the twentieth century has remained largely ignored for over fifty years.
Date:
May 2020
Creator:
Gibb, Charles, 1991-
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Collected Stories
A collection of short fiction stories that fixate on the role of the strange and the imagined.
Date:
May 2020
Creator:
Flannery, Brendan Conor
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
The Power of Choice: An Examination of a Hybrid Recess/Tutorial Program at a Suburban High School in the Southwestern United States
A suburban district in the southwestern region of the United States created a choice-based program in which students have the opportunity to address their social, emotional, and academic needs through a mid-day period where they have the ability to attend tutorials or engage in a variety of club and social activities. Each day, students choose the activity that best serves their needs, be those academic, social, or emotional. In order to determine students' attitudes, opinions, and uses of the program in an effort to improve its effectiveness for student success, this qualitative study was planned to respond to the research questions: (1) how do students spend the emPower period? and (2) what are students' thoughts, attitudes, and opinions with regards to emPower? The research began by examining student responses to a previous principal survey asking their opinions on the program. Following the analysis of the survey, focus group sessions of five students from each high school grade were held to discuss student perceptions, choices, and uses of the program. The discussions were audiotaped and transcribed. Thematic data analysis resulted in themes of stress, social life, environment, regulations, choice and tutorials. Findings included a continuum of maturity evident with students' choices …
Date:
May 2020
Creator:
Woodard, Chrystal Starnes
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
The Vocal Pedagogy of the Behnke Family: The Behnke Method
Emil Behnke was a highly esteemed vocal pedagogue of the late nineteenth century. Perhaps rare for the time, the art and science of teaching vocal methods of speech and singing was a Behnke family business, one that Emil shared with his wife and daughter, who were both named Kate. Indeed, Emil's daughter, Kate Emil Behnke, was equally regarded and valued in the field of vocal pedagogy, carrying her father's teachings into the twentieth century. Meanwhile, the elder Kate Behnke, wife to Emil and mother to Kate Emil, was responsible for administering and building upon her husband's innovative methods of speech therapy, establishing her own reputation as a speech healer. The Behnke family published no less than fourteen books, cumulatively. Largely forgotten today, the purpose of this document is to provide a comprehensive overview of the biography and the pedagogical methods and works of the Behnke family, and to contextualize these methods within the framework of trusted vocal pedagogy, both historic and current.
Date:
May 2020
Creator:
Stapleton, Megan
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Validating an Instrument for Gathering Faculty Perceptions of Online Education in Radiologic Science Programs
The purpose of this quantitative study was to provide a valid and reliable instrument that can be used to collect radiologic science faculty members' perceptions of online education. Using a survey modified from an existing study, data were collected concerning faculty perceptions of online education in radiologic sciences. R was used to analyze the survey data through exploratory factor analysis, confirmatory factor analysis, short form optimization, and weighted multiple regression analysis to produce an instrument that exhibits both content and construct validity, is reliable, and is a shortened, optimized version of the original instrument. The findings are discussed and recommendations for future research are provided to begin work broadening this under-researched area in the field of radiologic sciences.
Date:
May 2020
Creator:
Wagner, Jessyca B.
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Local Government Fiscal Stress and Financial Coping Strategies Following Disasters
This dissertation analyzes how local governments adapt to the fiscal stress of major disasters. Unifying theories of fiscal stress with emergency management theories, the dissertation presents a model of what influences local governments coping strategy use following disasters. Using new survey data and secondary financial data on cities, counties, and school districts that experienced Hurricane Harvey, findings show that local governments adapt in a variety of ways; of 137 local governments that responded, 66 percent used some number of coping strategies, with only 5 of 62 possible strategies not being used by any local governments. For those which did adapt, they on average used 7.06 strategies, and tended to show a preference towards revenue increasing strategies and rebuilding the community through new capital projects, with less emphasis on expenditure cuts compared to some prior literature findings on fiscal stress. The results indicate that local governments step up and provide new services necessary during the recovery process, to serve their community, despite fiscal stress. A negative binomial model shows partial support for the hypotheses that local governments with lower prior fiscal condition and greater hazard exposure will use more coping strategies. The findings show mixed results on whether institutional rules that …
Date:
May 2020
Creator:
Winkler, Julie Georgina
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Multi-Source Large Scale Bike Demand Prediction
Current works of bike demand prediction mainly focus on cluster level and perform poorly on predicting demands of a single station. In the first task, we introduce a contextual based bike demand prediction model, which predicts bike demands for per station by combining spatio-temporal network and environment contexts synergistically. Furthermore, since people's movement information is an important factor, which influences the bike demands of each station. To have a better understanding of people's movements, we need to analyze the relationship between different places. In the second task, we propose an origin-destination model to learn place representations by using large scale movement data. Then based on the people's movement information, we incorporate the place embedding into our bike demand prediction model, which is built by using multi-source large scale datasets: New York Citi bike data, New York taxi trip records, and New York POI data. Finally, as deep learning methods have been successfully applied to many fields such as image recognition and natural language processing, it inspires us to incorporate the complex deep learning method into the bike demand prediction problem. So in this task, we propose a deep spatial-temporal (DST) model, which contains three major components: spatial dependencies, temporal dependencies, …
Date:
May 2020
Creator:
Zhou, Yang
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Tending to the Bonds that Tie: Juvenile Incarceration and Caregiver Visitation
Extant research suggests that some of the potential harms to social bonds during the incarceration experience may be mitigated by visitation. In particular, previous studies have found visitation from family and friends to be significantly related to decreased recidivism rates among adult prisoners. Little is known about the impact of visitation on recidivism among juvenile populations, which this study sought to address. Utilizing data from the Pathways to Desistance study, a series of negative binomial regressions were carried out to observe the potential relationship between maternal and paternal caregiver visitation and post-release self-reported offending among serious juvenile offenders. No significant relationship was found between caregiver visitation and recidivism, contrary to expected results. This held true for both maternal and paternal caregiver visitation as well as both dichotomous and visit count measures. Further research is needed to determine why visitation studies among adult populations do not appear to generalize to juveniles. Visitation quality and nature of the relationship with caregivers should be observed in future studies.
Date:
May 2020
Creator:
Pierce, Kelly
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Novel Approaches for Enhancing Resistance to Fusarium graminearum in Arabidopsis and Wheat by Targeting Defense and Pathogenicity Factors
Fusarium head blight (FHB) is an important disease of small grain cereals including wheat that affects grain quality and yield. The fungus Fusarium graminearum (Fg) is the major agent of this disease. Lack of natural resistance has limited ability to control wheat losses to this disease. Developing new approaches is critical for increasing host plant resistance to this fungus. This work has identified four processes that can be targeted for enhancing host plant resistance to FHB. The first involves targeting the pattern-triggered immunity mechanism to promote host plant resistance. Two other approaches involved reducing activity of susceptibility factors in the host to enhance plant resistance. The susceptibility factors targeted include accumulation of the phytohormone jasmonic acid and the 9-lipoxygenase pathway that oxidizes fatty acids. Besides suppressing host defenses against Fg, jasmonic acid also directly acts on the fungus to promote fungal growth. 9- lipoxygenases similarly suppress host defenses to promote fungal pathogenicity. Another approach that was developed involved having the plant express double stranded RNA to target fungal virulence genes for silencing. This host-induced gene silencing approach was employed to target two fungal virulence genes, the lipase encoding FGL1 and salicylate hydroxylase encoding FgNahG, which the fungus secretes into the …
Date:
May 2020
Creator:
Alam, Syeda Tamanna
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Mobile Technologies for Language Learning: A Case Study of Beginning Learners of French
Over the past 25 years, research on the effectiveness of new technologies in teaching has been constantly evolving as teachers try to keep up with educational trends. With the current evolution of technology, it is important to find out how students feel about the use of technologies in both the classroom setting and the non-traditional learning environment. The objective of this project is to determine which applications the students of French 1010 (first semester of college-level French) at the University of North Texas use for language learning to supplement and reinforce the concepts learned in class. Two questions guided this project: (1) what are the new technologies that students in French 1010 use? and (2) if UNT were to implement hybrid classes, would students be interested in taking them? In order to answer these questions, a survey was distributed to 184 students of French 1010 at UNT during the fall 2019 semester. From these surveys, 100 were selected for analysis in the present study, and three students were interviewed as a way to collect additional data. The results of the survey showed that Duolingo was the most used application for language learning purposes, while the interviews showed that the students …
Date:
May 2020
Creator:
Dikosso-Bebe, Lydie Marina
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Islamic Patterns as an Allegory for an F-1 Student's Experience in the Context of Global Capitalism: The Aesthetics of Cognitive Mapping as an Approach to Art-Based Research
Building on Fredric Jameson's critical theory, this dissertation examines how the aesthetics of cognitive mapping were used to uncover overlooked political, economic, social and cultural dimensions behind my artistic engagement with Islamic patterns. Using a critically informed variant of arts-based research (ABR), I explored the complexity of the interconnected economic, social, political and aesthetic realities informing my positionality as a Muslim Saudi female artist/research completing her dissertation in a Western country. Particularly, my work revealed how certain global forces (including capitalist relations between Saudi Arabia and the USA, as well as global postmodern cultural influences) shape the processes of appropriation and re-signification of patterning appropriated from Islamic aesthetics. This research culminated in a body of artwork for a solo exhibition at Paul Voertman's Gallery at the College of Visual Arts and Design at the University of North Texas located in Denton, Texas. I conclude the study with recommendations for a regional ABR to be developed by educators for the Middle East and North Africa (MENA) region. The study also suggests that this model of cognitive mapping as a critical art making methodology would be a great pedagogical tool for museums and art education curriculum to implement in Saudi Arabia.
Date:
May 2020
Creator:
Shuqair, Noura
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
The Innovation and Influence of Jazz Harpist Dorothy Ashby (1932-1986)
A comparative analysis of the musical transcriptions of Dorothy Ashby with those of her predecessors proves that Ashby was a uniquely powerful and innovative influence on the genre of jazz harp. This dissertation begins with a summative biography of Ashby, following her education in both jazz and classical music through to her career highlights as a performer, arranger and composer. An analysis of Ashby's recordings reveals the development of her groundbreaking musical style throughout her life. This paper also examines Ashby's social activism through musical theatre, especially with regards to combating racism. Next, a brief biography of jazz harp forerunners Casper Reardon and Adele Girard precedes a comparative analysis of Reardon's "Aint' Misbehavin" with Ashby's "Soft Winds" and a comparative analysis of Girard's "Harp Boogie" with Ashby's "Blues for Mr. K." Finally, myriad examples of current musicians covering and sampling her work confirm the paramount and lasting influence of Dorothy Ashby's music.
Date:
May 2020
Creator:
Betzer, Jennifer
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Sacred Sound at the Symphony: A Conductor's Guide to Faith Traditions in Choral-Orchestral Repertoire
Since most historical composers of Western art music were European Christians (or resided in areas that were primarily populated by Christians), a vast majority of the sacred choral-orchestral repertoire is based on major figures and themes from the most prominent denominations, including Catholicism, Lutheranism, and Anglicanism. As a corollary this is also the case for analytical, pedagogical, and exegetical literature related to the topic. However, in the late nineteenth century some composers began to look to other faith traditions for inspiration, which resulted in compositions based on texts that are less-familiar to Western audience members and performers. Despite the fact that many of these pieces are innovative and well-written, few, if any, have entered the standard repertoire. Because of this they are under-represented in both performance and extant music literature. The purpose of this study is to examine three compositions from this marginalized category in order to produce a guide that provides salient information on the religious/cultural background and musical aspects of each work. This guide will serve as a resource for conductors to facilitate an understanding of and connection with the text, allow informed programming decisions, and promote approaches that are appropriate and respectful to the religious source material. …
Date:
May 2020
Creator:
Bott, Robert (Conductor)
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Determining Event Outcomes from Social Media
An event is something that happens at a time and location. Events include major life events such as graduating college or getting married, and also simple day-to-day activities such as commuting to work or eating lunch. Most work on event extraction detects events and the entities involved in events. For example, cooking events will usually involve a cook, some utensils and appliances, and a final product. In this work, we target the task of determining whether events result in their expected outcomes. Specifically, we target cooking and baking events, and characterize event outcomes into two categories. First, we distinguish whether something edible resulted from the event. Second, if something edible resulted, we distinguish between perfect, partial and alternative outcomes. The main contributions of this thesis are a corpus of 4,000 tweets annotated with event outcome information and experimental results showing that the task can be automated. The corpus includes tweets that have only text as well as tweets that have text and an image.
Date:
May 2020
Creator:
Murugan, Srikala
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Orca Recovery by Changing Cultural Attitudes (ORCCA): How Anthropocentrism and Capitalism Led to an Endangered Species in Puget Sound
Ways of understanding, living, and communicating with non-human species, and more specifically endangered species, have been thought of dualistically and hierarchically in Western cultures. This type of thinking is harmful when examining environmental issues that involve more than just humans, which is arguably all environmental issues. By enforcing a nature/culture dichotomy, humans are seen as separate from nature and therefore they can ethically excuse themselves from dealing with environmental issues that happen "out there" in nature. This thesis explores two manifestations of this nature/culture separation as it continues to threaten wild orca populations in Puget Sound. The first is because of an anthropocentric culture and the second is because of the capitalist socio-economic system. The anthropocentric part of this type of thinking raises humans up on a pedestal, above all non-human species. It gives humans the excuse to only care about issues that affect them directly. The capitalistic part of this type of thinking enforces human's exploitation and commodification of nature. I argue that anthropocentrism and capitalism together create a human/nature relationship that harms nature and benefits humans. This relationship is illustrated by a small population of orcas, called the Southern Resident Killer Whales (SRKW), off the coast of Washington …
Date:
May 2020
Creator:
Jandick, Brittany
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Exploring the Digital Divide and the Latino-White Achievement Gap in Online Education
The purpose of this exploratory study was to investigate the relationship between the digital divide and the Latino-White achievement gap in online education. Through an analysis of archival enrollment and academic performance data a comparison was conducted between online and face-to-face courses by ethnicity. Additionally, academic performance data was then compared to survey responses from online students on digital motivation, material access, internet skills, and internet usage. Findings and recommendations for future research are discussed and provided to continue the exploration of disparities of digital access and academic performance in an effort to inform decisions in higher education.
Date:
May 2020
Creator:
Cruz, Felicia
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Assessing Self-Determination Inventory: Validity for Students with Disabilities and Typically Developing Students
Students' self-determination (SD) can positively influence their ability to make choices in planning for their future. The current study is a preliminary validity study on the most recent 21-item version of Shogren and Wehmeyer's Self-Determination Inventory: Student Report (SDI-SR). The SDI-SR was administered to 316 students (ages 13-22) and results were examined with exploratory factor analysis (EFA) and confirmatory factor analysis (CFA). Results of the EFA on a 7-factor solution (TLI = 0.97; RMSEA = 0.04; SRMR = 0.02) aligned with the theoretical basis for the SDI:SR as well as results for the 7-factor CFA using simulated data (TLI = 0.913; RMSEA = 0.047; SRMR = 0.072 and CFI = 0.931); however, the CFA 7-factor solution results on the present study data were slightly lower than what is considered acceptable model fit (TLI = 0.883; RMSEA = 0.04; RMSR = 0.047). These results combined suggest that theory-based 7-factor solution does capture seven latent constructs in this data. A CFA was also conducted with a 5-factor structure based on factor loading from an EFA using the present research data resulting in a better model fit (TLI = 0.912; RMSEA = .075; SRMR = 0.046; and CFI = 0.940) as well as …
Date:
May 2020
Creator:
Nix, Susan Michele
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Analysis of Interrelationships between Climate Change and Cotton Yield in Texas High Plains
The Texas High Plains produces the most substantial amount of cotton in Texas. The region is a semi-arid area with limited precipitation, and it is, therefore, susceptible to climate change. Cotton production in the Texas High Plains is mostly dependent on irrigation to increase yield. The overall goal of this research was to study the interrelationships between climate change and cotton yield using correlation analysis and also to study how climate has changed in the region using trend analysis. A three-decade data (1987-2017) was analyzed to establish the relationship between climate change and cotton and also to determine how climate has changed in the area over the last 30 years. The research used precipitation and temperature data to assess climate change.The results of this research showed that annual mean temperature has lesser impacts on cotton yield, and the correlation between annual precipitation and cotton yield is insignificant. It also found out that high rates of temperature at the boll opening stage of cotton growth results in decreased cotton yield and that at the boll development and boll opening stages, precipitation is needed. Again, the research indicated that, on average, there had been a significant increase in temperature, but precipitation trends …
Date:
May 2020
Creator:
Sarbeng, Lorenda
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Bridging the Gap: Introducing Extended Techniques and Contemporary Notation through Newly Composed Etudes for Clarinet
This dissertation aims to address the pedagogical gap in introductory material for contemporary clarinet instruction. Through examining the most prominent contemporary methods for the clarinet, the pedagogical gap is highlighted, particularly regarding material aimed at newcomers and early undergraduate students. To address these needs, a new collection of etudes is proposed, introducing extended techniques and contemporary notation for newcomers to modern music.
Date:
May 2020
Creator:
Ellard, Luke
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library