Degree Level

States

Cracking the Closed Society: James W. Silver and the Civil Rights Movement in Mississippi (open access)

Cracking the Closed Society: James W. Silver and the Civil Rights Movement in Mississippi

This thesis examines the life of James Wesley Silver, a professor of history at the University of Mississippi for twenty-six years and author of Mississippi: The Closed Society, a scathing attack on the Magnolia State's history of racial oppression. In 1962, Silver witnessed the campus riot resulting from James Meredith's enrollment as the first black student at the state's hallowed public university and claims this was the catalyst for writing his book. However, by examining James Silver's personal and professional activities and comparing them with the political, cultural, and social events taking place concurrently, this paper demonstrates that his entire life, the gamut of his experiences, culminated in the creation of his own rebel yell, Mississippi: The Closed Society. Chapter 1 establishes Silver's environment by exploring the history and sociology of the South during the years of his residency. Chapter 2 discusses Silver's background and early years, culminating with his appointment as a faculty member of the University of Mississippi in 1936. Chapter 3 reveals Silver's personal and professional life during the 1940s, as well as the era's notable historical events. The decade of the 1950s is discussed in chapter 4, particularly the civil rights movement, Silver's response to these …
Date: May 2010
Creator: Fox, Lisa Ann
Object Type: Thesis or Dissertation
System: The UNT Digital Library
Critical Discussion of Pleroma: A Digital Drama and Its Relevance to Tragic Form in Music (open access)

Critical Discussion of Pleroma: A Digital Drama and Its Relevance to Tragic Form in Music

Pleroma is a digital drama: a work composed of digital animation combined with electroacoustic music, presenting an original dramatic narrative. Pleroma's dramatic elements evoke both the classical form of tragedy and the concept of perceptual paradox. A structural overview of the drama and its characters and a plot synopsis are given to provide context for the critical discussion. Analytical descriptions of Beethoven's Coriolan Overture Op.62 and Mahler's Symphony No. 9 are provided to give background on tragic form and Platonic allegory in music. An investigation into the elements discussed in the analysis of the instrumental works reveals several layers of possible interpretation in Pleroma. Dramatic elements allow for tragic narratives to be constructed, but they are complemented by character associations formed by pitch relationships, stylistic juxtapositions, and instrumentation. A copy of the dramatic text is included to supplement the multimedia production.
Date: December 2010
Creator: Lucas, Stephen, 1985-
Object Type: Thesis or Dissertation
System: The UNT Digital Library
Critical Discussion of Pleroma: A Digital Drama and Its Relevance to Tragic Form in Music captions transcript

Critical Discussion of Pleroma: A Digital Drama and Its Relevance to Tragic Form in Music

Pleroma is a digital drama: a work composed of digital animation combined with electroacoustic music, presenting an original dramatic narrative. Pleroma's dramatic elements evoke both the classical form of tragedy and the concept of perceptual paradox. A structural overview of the drama and its characters and a plot synopsis are given to provide context for the critical discussion. Analytical descriptions of Beethoven's Coriolan Overture Op.62 and Mahler's Symphony No. 9 are provided to give background on tragic form and Platonic allegory in music. An investigation into the elements discussed in the analysis of the instrumental works reveals several layers of possible interpretation in Pleroma. Dramatic elements allow for tragic narratives to be constructed, but they are complemented by character associations formed by pitch relationships, stylistic juxtapositions, and instrumentation. A copy of the dramatic text is included to supplement the multimedia production: http://digital.library.unt.edu/ark:/67531/metadc33228/
Date: December 2010
Creator: Lucas, Stephen, 1985-
Object Type: Video
System: The UNT Digital Library
Daughters of the King and Founders of a Nation: Les Filles du Roi in New France (open access)

Daughters of the King and Founders of a Nation: Les Filles du Roi in New France

The late seventeenth century was a crucial era in establishing territorial claims on the North American continent. In order to strengthen France's hold on the Quebec colony, Louis XIV sent 770 women across the Atlantic at royal expense in order to populate New France. Since that time, these women known as the filles du roi, have often been reduced to a footnote in history books, or else mistakenly slandered as women of questionable morals. This work seeks to clearly identify the filles du roi through a study of their socioeconomic status, educational background, and various demographic factors, and compare the living conditions they had in France with those that awaited them in Canada. The aim of this undertaking is to better understand these pioneer women and their reasons for leaving France, as well as to identify the lasting contributions they made to French-Canadian culture and society.
Date: May 2010
Creator: Runyan, Aimie Kathleen
Object Type: Thesis or Dissertation
System: The UNT Digital Library
Demographic and Psychosocial Contributions to the Expression of Schizotypal Personality Traits. (open access)

Demographic and Psychosocial Contributions to the Expression of Schizotypal Personality Traits.

Previous research suggests there are a number of variables that are associated with the expression of schizotypal personality disorder (SPD) symptoms. Such variables include childhood trauma, depression and anxiety, substance use, normal-range personality traits, ethnicity, and gender. However, research to date has not examined all of these variables in a single study to determine how they may be interrelated or differentially related to SPD symptom domains. Of particular interest is the association of these variables as explained by the diathesis-stress model. This study utilized a convenience sample of 298 undergraduate students to examine a continuous range of scores for symptoms of SPD and how the interrelation of biological factors such as gender and ethnicity and psychosocial factors and stressors such as childhood trauma and personality traits, specifically neuroticism and extroversion, influence the expression of SPD symptoms. It was predicted that anxiety, depression, stress, and childhood trauma would positively correlate to SPD symptoms. It was also hypothesized that neuroticism and substance use would positively correlate to schizotypal traits and extroversion would be negatively correlated to schizotypal traits as measured by the Schizotypal Personality Questionnaire-Brief. It was further hypothesized that psychosocial stressors would be moderated by the aforementioned biological factors.
Date: December 2010
Creator: Hernandez, Nikki
Object Type: Thesis or Dissertation
System: The UNT Digital Library
Depression in Diabetic and Non-Diabetic Individuals: Physical Activity, Nutrition, and Diet (open access)

Depression in Diabetic and Non-Diabetic Individuals: Physical Activity, Nutrition, and Diet

About 8.3% of individuals diagnosed with diabetes mellitus (DM) are diagnosed with comorbid depression, a higher rate than the general adult population. This project examined the differences of depression symptoms experienced between diabetic and matched non-diabetic individuals and the relationship of daily activity and nutrition behaviors with depression between these groups. The 2005-2006 National Health and Nutrition Examination Survey (NHANES) was utilized to assess: depression symptoms, diabetic glycemic control as measured by glycoginated hemoglobin (HbA1c), amount of physical activity, percentage of macronutrients, daily frequencies of foods consumed, and the use of nutritional food labels to make food choices. A sample of diabetic (n = 451) and non-diabetic individuals (n = 451) were matched to on age, gender, ethnicity, and education. The diabetic individuals experienced greater depression on both continuous and ordinal diagnostic variables. Counter to expectation, there was no relationship observed between depression and HbA1c in diabetic individuals, r = .04, p > .05.
Date: December 2010
Creator: Edwards, Kate G.
Object Type: Thesis or Dissertation
System: The UNT Digital Library
Design and Implementation of Communication Platform for Autonomous Decentralized Systems (open access)

Design and Implementation of Communication Platform for Autonomous Decentralized Systems

This thesis deals with the decentralized autonomous system, in which individual nodes acting like peers, communicate and participate in collaborative tasks and decision making processes. An experimental test-bed is created using four Garcia robots. The robots act like peers and interact with each other using user datagram protocol (UDP) messages. Each robot continuously monitors for messages coming from other robots and respond accordingly. Each robot broadcasts its location to all the other robots within its vicinity. Robots do not have built-in global positioning system (GPS). So, an indoor localization method based on signal strength is developed to estimate robot's position. The signal strength that the robot gets from the nearby wireless access points is used to calculate the robot's position. Trilateration and fingerprint are some of the indoor localization methods used for this purpose. The communication functionality of the decentralized system has been tested and verified in the autonomous systems laboratory.
Date: December 2010
Creator: Gottipati, Naga Sravani
Object Type: Thesis or Dissertation
System: The UNT Digital Library
Determining the Relation Between the Moments of Acquisition of Baseline Conditional Discriminations and the Emergence of Equivalence Relations (open access)

Determining the Relation Between the Moments of Acquisition of Baseline Conditional Discriminations and the Emergence of Equivalence Relations

The experiment was an attempt to gain a more precise understanding of the temporal relation between the development of analytic units and equivalence relations. Two prompting procedures were used during training to pinpoint when eight subjects learned the conditional discriminations. Near simultaneous presentation of probe and training trials allowed for examination of the temporal relation between conditional discrimination acquisition and derived performances on stimulus equivalence probes. The data show that, for seven of eight subjects, a decreased reliance on prompts was coincident with the development of equivalence-consistent choices on either all or some probe trials, which suggests that the development of analytic units is sufficient to give rise to equivalence relations among stimuli.
Date: August 2010
Creator: Swisher, Melissa J.
Object Type: Thesis or Dissertation
System: The UNT Digital Library
Development of a Test Blueprint for a Hospitality Management Capstone Course to Measure Programmatic Student Learning Outcomes (open access)

Development of a Test Blueprint for a Hospitality Management Capstone Course to Measure Programmatic Student Learning Outcomes

The purpose of this study was to develop a test blue-print for a hospitality management capstone course to measure programmatic student learning outcomes. A total of 50 hospitality industry professionals and hospitality management faculty were interviewed through focus group discussions, and a post-focus group survey was conducted to determine a weighted percentage for each of the nine determined content domains. A test blueprint was developed from the weighted proportions determined by this study and a process by which other educational institutions could follow to establish a consistent and accurate evaluation method for a capstone course was described.
Date: May 2010
Creator: Stevenson, Jackie M.
Object Type: Thesis or Dissertation
System: The UNT Digital Library
The Dichotomy of Congressional Approval (open access)

The Dichotomy of Congressional Approval

This thesis seeks to understand how political awareness affects what information one uses to indicate their approval or disapproval of Congress and its members. More concisely, do more and less aware individuals rely on the same pieces of political information to mold their opinions of Congress? The second question of concern is what role does media consumption play in informing survey respondents about Congress. Third, I consider how survey respondents use cues like the condition of the economy and presidential job performance to help formulate their opinion of Congress Finally, by applying the Congressional approval literature to incumbent level approval, I seek to advance the theory and literature on what motivates the approval of incumbents.
Date: August 2010
Creator: Moti, Danish Saleem
Object Type: Thesis or Dissertation
System: The UNT Digital Library
Discovery of Resources and Conflict in the Interstate System, 1816-2001 (open access)

Discovery of Resources and Conflict in the Interstate System, 1816-2001

This study tests a theory detailing the increased likelihood of conflict following an initial resource discovery in the discovering nation and its region. A survey of prior literature shows a multitude of prior research concerning resources and nations' willingness to initiate conflict over those resources, but this prior research lacks any study concerning the effects of the discovery of resources on interstate conflict. The theory discusses the increased likelihood of conflict in the discovering nation as both target and initiator. It further looks at the increased chance of conflict in the discoverer's region due to security dilemmas and proxy wars. The results show strong support for the theory, suggesting nations making new resource discoveries must take extra care to avoid conflict.
Date: May 2010
Creator: Clark, Bradley
Object Type: Thesis or Dissertation
System: The UNT Digital Library
Do College Students with ADHD have Expressive Writing Difficulties as Do Children with ADHD? (open access)

Do College Students with ADHD have Expressive Writing Difficulties as Do Children with ADHD?

This study analyzed the expressive writing of college students. Twenty-two ADHD students and 22 controls were asked to write a story based on a picture story and a personal challenge. The texts were compared based on several qualitative and quantitative parameters. The results show that students in both groups presented similar text quality. Out of six qualitative parameters only one was statistically different between the two groups: ADHD students performed worse in adequacy, but only in the picture task. Students writings were also investigated using corpus based analysis. This analysis showed that ADHD students used less unusually frequent words in the picture story but more in the challenge task. Taken together the findings indicate no significant difference in expressive writing between ADHD and non ADHD college students. An explanation to this result is that college students with ADHD may have passed the filter of prior education.
Date: August 2010
Creator: Mantecon, Hripsime Der-Galustian
Object Type: Thesis or Dissertation
System: The UNT Digital Library
Does the Provision of an Intensive and Highly Focused Indirect Corrective Feedback Lead to Accuracy? (open access)

Does the Provision of an Intensive and Highly Focused Indirect Corrective Feedback Lead to Accuracy?

This thesis imparts the outcomes of a seven-week long quasi-experimental study that explored whether or not L2 learners who received intensive and highly focused indirect feedback on one type of treatable error - either the third person singular -s, plural endings -s, or definite article the - eventually become more accurate in the post-test as compared to a control group that did not. The paired-samples t-test comparing the pre-test and post-test scores of both groups demonstrates that the experimental group did no better than the control group after they received indirect corrective feedback. The independent samples t-test measuring the experimental and control group's accuracy shows no significant difference between the two groups. Effect sizes calculated, however, do indicate that, had the sample sizes been bigger, both groups would have eventually become more accurate in the errors targeted, although this would not have been because of the indirect feedback.
Date: May 2010
Creator: Jhowry, Kheerani
Object Type: Thesis or Dissertation
System: The UNT Digital Library
Easter Seals North Texas Autism Treatment Program Evaluation: Child Progress (open access)

Easter Seals North Texas Autism Treatment Program Evaluation: Child Progress

This study reports and evaluates child outcome measures at a non-profit autism treatment program providing applied behavior analysis (ABA) based services to children age 3 to 8. To accomplish this, a review was conducted of available outcome data for a 1 year period. Several categories of outcome measures have been reported in the autism treatment literature (post-intervention educational placement, cognitive status, developmental and achievement status and/or progress, autism symptom reduction, and diagnostic reclassification). This study found that the program relied on 2 sources of data to evaluate child outcome: Hawaii Early Learning Profile® and program goal mastery. Children are making progress as indicated by these measures. The findings are discussed in relation to broader outcome recommendations.
Date: May 2010
Creator: Brunson, Lashanna Yvette
Object Type: Thesis or Dissertation
System: The UNT Digital Library
Effect of Fluorine and Hydrogen Radical Species on Modified Oxidized Ni(pt)si (open access)

Effect of Fluorine and Hydrogen Radical Species on Modified Oxidized Ni(pt)si

NiSi is an attractive material in the production of CMOS devices. The problem with the utilization of NiSi, is that there is no proper method of cleaning the oxide on the surface. Sputtering is the most common method used for the cleaning, but it has its own complications. Dry cleaning methods include the reactions with radicals and these processes are not well understood and are the focus of the project. Dissociated NF3 and NH3 were used as an alternative and XPS is the technique to analyze the reactions of atomic fluorine and nitrogen with the oxide on the surface. A thermal cracker was used to dissociate the NF3 and NH3 into NFx+F and NHx+H. There was a formation of a NiF2 layer on top of the oxide and there was no evidence of nitrogen on the surface indicating that the fluorine and hydrogen are the reacting species. XPS spectra, however, indicate that the substrate SiO2 layer is not removed by the dissociated NF3 and NiF2 growth process. The NiF2 over layer can be reduced to metallic Ni by reacting with dissociated NH3 at room temperature. The atomic hydrogen from dissociated ammonia reduces the NiF2 but it was determined that the …
Date: May 2010
Creator: Gaddam, Sneha Sen
Object Type: Thesis or Dissertation
System: The UNT Digital Library
The Effect of High-Probability Request Sequences on Latency to Comply with Instructions to Transition in a Child With Severe Mental Retardation (open access)

The Effect of High-Probability Request Sequences on Latency to Comply with Instructions to Transition in a Child With Severe Mental Retardation

This study investigated the effect of implementing high-probability request sequences prior to the delivery of instructions to transition in a child with severe mental retardation. Data were collected on latency to comply with a low-probability request to transition and a modified version of the low-probability request. Implementation of high-probability request sequences resulted in shortened latencies to comply with the modified low-probability request instructing the child to engage in a preferred activity located at the endpoint of the transition.
Date: December 2010
Creator: Carpentieri, Michelle Lee
Object Type: Thesis or Dissertation
System: The UNT Digital Library
Effect of Polyphosphoric Acid on Aging Characteristics of PG 64-22 Asphalt Binder (open access)

Effect of Polyphosphoric Acid on Aging Characteristics of PG 64-22 Asphalt Binder

This research presents the results on an experimental investigation to identify the effect of polyphosphoric acid (PPA) on aging characteristics of an asphalt binder. Addition of PPA to asphalt binders is said to improve performance of flexible pavements. Asphalt binder PG 64-22 in modified and unmodified conditions was subjected to aging in the laboratory using a regular oven and also simulated short term aging using rolling thin film oven (RTFO) test. Aging experiments were conducted to analyze the extent of oxidation in terms of changes in molecular structure of the asphalt binder. These changes were appraised using Fourier transform infrared (FTIR) spectroscopy, dynamic shear rheometer (DSR), and epifluorescence microscopy tests. FTIR was used to determine the changes in major bands with addition of PPA. Stiffness and viscoelastic behaviors of asphalts were determined from the DSR test. The stiffness is measured by calculating the shear modulus, G* and the viscoelastic behavior is measured by calculating the phase angle, sin δ. Epifluorescence microscopy is a tool used to study properties of organic or inorganic substances. The morphological characteristics of PPA modified asphalt samples were observed through epifluorescence microscopy. Epifluorescence microscopy reveals the polymer phase distribution in the asphalt binders. Results of this …
Date: December 2010
Creator: Ramasamy, Naresh Baboo
Object Type: Thesis or Dissertation
System: The UNT Digital Library
Effect of Resource Availability on Dyadic Fitness (open access)

Effect of Resource Availability on Dyadic Fitness

College students participating in dyads played a game designed as an analog of early hunters whose survival, as a dyad and ultimately individually, depend on rabbits they hunt. Dyadic fitness was defined as both participants being able to hunt and it was measured by the proportion of trials in a condition that both participants hunted. The effects of scarcity (alternating rich and poor conditions) on dyadic fitness were examined in two experiments. First experiment results did not show a difference in dyadic fitness as a function of the independent variable. The second experiment increased the number of hunting seasons and also the discrepancy between scarcity in rich and poor seasons. Second experiment results show that dyads start fit in rich seasons and become increasingly fit in poor seasons. External variables could not be ruled out; therefore, additional experiments still need to be carried out to clarify results.
Date: August 2010
Creator: Neves, Ana Barbara Vieira Sinay
Object Type: Thesis or Dissertation
System: The UNT Digital Library
Effective and Accelerated Informative Frame Filtering in Colonoscopy Videos Using Graphic Processing Units (open access)

Effective and Accelerated Informative Frame Filtering in Colonoscopy Videos Using Graphic Processing Units

Colonoscopy is an endoscopic technique that allows a physician to inspect the mucosa of the human colon. Previous methods and software solutions to detect informative frames in a colonoscopy video (a process called informative frame filtering or IFF) have been hugely ineffective in (1) covering the proper definition of an informative frame in the broadest sense and (2) striking an optimal balance between accuracy and speed of classification in both real-time and non real-time medical procedures. In my thesis, I propose a more effective method and faster software solutions for IFF which is more effective due to the introduction of a heuristic algorithm (derived from experimental analysis of typical colon features) for classification. It contributed to a 5-10% boost in various performance metrics for IFF. The software modules are faster due to the incorporation of sophisticated parallel-processing oriented coding techniques on modern microprocessors. Two IFF modules were created, one for post-procedure and the other for real-time. Code optimizations through NVIDIA CUDA for GPU processing and/or CPU multi-threading concepts embedded in two significant microprocessor design philosophies (multi-core design and many-core design) resulted a 5-fold acceleration for the post-procedure module and a 40-fold acceleration for the real-time module. Some innovative software modules, …
Date: August 2010
Creator: Karri, Venkata Praveen
Object Type: Thesis or Dissertation
System: The UNT Digital Library
The Effects of a Communication Training Workshop on the Verbal Behavior of Caregivers (open access)

The Effects of a Communication Training Workshop on the Verbal Behavior of Caregivers

This study evaluated the effectiveness of a workshop designed to train adults to use supportive verbal behavior during distressful situations. Participants were trained to provide descriptive, empathetic and hopeful statements using instructions, rationales, modeling, role-play, feedback, and rehearsal. A pre-post design was used to analyze the effects of the training on verbal and non-verbal behaviors of four females during simulation scenarios. Results indicate all four participants provided maximum support statements above pre-training levels during post-training simulation and written assessments.
Date: August 2010
Creator: Blell, Zainab D.
Object Type: Thesis or Dissertation
System: The UNT Digital Library
The Effects of Copying Before, Copying After, and Guessing on Acquisition Rate and Retention (open access)

The Effects of Copying Before, Copying After, and Guessing on Acquisition Rate and Retention

Computer-based instructional programs are being used more frequently in classrooms. While these programs offer many benefits from traditional teaching methods, humans still need to program them. There is inconsistency in the literature regarding the best way to design such programs. The purpose of this study was to evaluate the effects of three training procedures in teaching individuals to type a specified three-letter response in the presence of a corresponding symbol. Results show that the training format that prompted individuals to copy the correct response before the opportunity to respond was more efficient than viewing the correct response after an error, or copying the correct response after an error. A discussion of the results as well as implications for classroom use is also provided.
Date: December 2010
Creator: Pinkelman, Sarah Ellen
Object Type: Thesis or Dissertation
System: The UNT Digital Library
The Effects of Jackpots on Responding and Choice in Two Domestic Dogs (open access)

The Effects of Jackpots on Responding and Choice in Two Domestic Dogs

The current study investigated the impact of delivering a jackpot on response rate and response allocation in two domestic dogs. For the purpose of this research, a jackpot was defined as a one-time, within-session increase in the magnitude of reinforcement. Two experiments were conducted to investigate the effects of delivering a jackpot in both single-operant and concurrent schedule procedures. Experiment 1 investigated the impact of a one-time, within-session increase in the magnitude of reinforcement on response rate in a single-operant procedure. Results of Experiment 1 showed no clear change in response rate after the delivery of the jackpot. Experiment 2 investigated the impact of a one-time, within-session increase in the magnitude of reinforcement on response allocation in a concurrent schedule procedure. Results of Experiment 2 showed an increase in response allocation to the jackpotted contingency in both subjects. These results suggest that a jackpot, as defined here, has no effect in single-operant procedures while having an effect in concurrent schedule procedures. These effects are similar to those reported in the magnitude of reinforcement literature.
Date: May 2010
Creator: Muir, Kristy Lynn
Object Type: Thesis or Dissertation
System: The UNT Digital Library
Effects of Rebar Temperature and Water to Cement Ratio on Rebar-Concrete Bond Strength of Concrete Containing Fly Ash (open access)

Effects of Rebar Temperature and Water to Cement Ratio on Rebar-Concrete Bond Strength of Concrete Containing Fly Ash

This research presents the results on an experimental investigation to identify the effects of rebar temperature, fly ash and water to cement ratio on concrete porosity in continuously reinforced concrete pavements (CRCP). Samples were cast and analyzed using pullout tests. Water to cement ratio (w/c) and rebar temperature had a significant influence on the rebar-concrete bond strength. The 28-day shear strength measurements showed an increase in rebar-concrete bond strength as the water to cement ratio (w/c) was reduced from 0.50 to 0.40 for both fly ash containing and non fly ash control samples. There was a reduction in the peak pullout load as the rebar surface temperature increased from 77o F to 150o F for the cast samples. A heated rebar experiment was performed simulating a rebar exposed to hot summer days and the rebar cooling curves were plotted for the rebar temperatures of 180o F - 120o F. Fourier transform infrared spectroscopy was performed to show the moisture content of cement samples at the rebar-concrete interface. Mercury intrusion porosimetry test results on one batch of samples were used for pore size distribution analysis. An in-depth analysis of the morphological characteristics of the rebar-concrete interface and the observation of pores …
Date: May 2010
Creator: Pati, Ardeep Ranjan
Object Type: Thesis or Dissertation
System: The UNT Digital Library
Effects of Reinforcer Magnitude on a Fixed Time Food Delivery Treatment of Pica (open access)

Effects of Reinforcer Magnitude on a Fixed Time Food Delivery Treatment of Pica

The purpose of the current study was to examine the effects of using fixed time schedules with different magnitudes of stimulus delivery as treatment for pica. A functional assessment was conducted, which indicated that pica occurred across experimental conditions and was most frequent in the absence of social stimulation or contingencies. A competing stimulus assessment was then conducted to identify stimuli that could potentially compete with pica during NCR. Subsequently, an evaluation of the effects of reinforcer magnitude on NCR as a treatment of pica was conducted. Treatment results indicated that quantity of reinforcer increased the effectiveness of leaner schedules of reinforcer delivery; however, it was not possible to fade the temporal schedule to one that would have been useful in practice. In addition, limitations and future research are outlined.
Date: August 2010
Creator: Lyon, Nathan Scott
Object Type: Thesis or Dissertation
System: The UNT Digital Library