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 Collection: UNT Theses and Dissertations
The Academic and Athletic Experiences of African-american Males in a Division I (Fbs) Football Program

The Academic and Athletic Experiences of African-american Males in a Division I (Fbs) Football Program

Date: December 2013
Creator: Salinas, Silvia M.
Description: This study investigated the academic and athletic experiences of African-American males in a Division I football bowl subdivision football program. Critical race theory, identity development model, and social learning model were the theoretical frameworks used as the critical lenses in a qualitative design to examine the participants. The participants’ responses were analyzed and interpreted using thematic analysis. A qualitative research design, which included individual interviews with 10 second year African-American male football players, was used to address this research problem. The goal was to bring together both the psychological and sociological perspectives and to challenge participants to candidly describe their academic and athletic experiences and attitudes toward obtaining an undergraduate degree. Four themes were determined in the data analysis: differential treatment and determining oneself, time management, relationships, and career aspirations. In relation to the theoretical frameworks, the development of self-confidence and knowledge of balancing their academic and athletic schedules was critical for all participants. The sense of feeling different and challenged because of the differences in culture and experience was evident. From this study, university and collegiate athletics administrators may better understand the backgrounds, challenges, and learning needs of this population. As a result, higher education personnel may improve the ...
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Shakespeare and Modeling Political Subjectivity

Shakespeare and Modeling Political Subjectivity

Date: December 2013
Creator: Worlow, Christian D.
Description: This dissertation examines the role of aesthetic activity in the pursuit of political agency in readings of several of Shakespeare’s plays, including Hamlet (1600), A Midsummer Night’s Dream (1595), The Tempest (1610), the history plays of the second tetralogy (1595-9), Julius Caesar (1599), and Coriolanus (1605). I demonstrate how Shakespeare models political subjectivity—the capacity for individuals to participate meaningfully in the political realm—as necessitating active aesthetic agency. This aesthetic agency entails the fashioning of artistically conceived public personae that potential political subjects enact in the public sphere and the critical engagement of the aesthetic and political discourses of the subjects’ culture in a self-reflective and appropriative manner. Furthermore, these subjects should be wary auditors of the texts and personae they encounter within the public sphere in order to avoid internalizing constraining ideologies that reify their identities into forms less conducive to the pursuit of liberty and social mobility. Early modern audiences could discover several models for doing so in Shakespeare’s works. For example, Hamlet posits a model of Machiavellian theatricality that masks the Prince's interiority as he resists the biopolitical force and disciplinary discourses of Claudius's Denmark. Julius Caesar and Coriolanus advance a model of citizenship through the plays’ nameless ...
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Multi-year Operation Effect of Geothermal Heat Exchanger on Soil Temperature for Unt Zero Energy Lab

Multi-year Operation Effect of Geothermal Heat Exchanger on Soil Temperature for Unt Zero Energy Lab

Date: December 2013
Creator: Walikar, Vinayak P.
Description: Ground source heat pump (GSHP) uses earth’s heat to heat or cool space. Absorbing heat from earth or rejecting heat to the earth, changes soil’s constant temperature over the multiple years. In this report we have studied about Soil temperature change over multiple years due to Ground loop heat exchanger (GLHE) for Zero Energy Research Laboratory (ZØE) which is located in Discovery Park, University of North Texas, Denton, TX. We did 2D thermal analysis GLHP at particular Depth. For simulation we have used ANSYS workbench for pre-processing and FLUENT ANYS as solver. TAC Vista is software that monitors and controls various systems in ZØE. It also monitors temperature of water inlet/outlet of GLHE. For Monitoring Ground temperatures at various depths we have thermocouples installed till 8ft from earth surface, these temperatures are measured using LabVIEW. From TAC Vista and LabVIEW Reading’s we have studied five parameters in this report using FLUENT ANSYS, they are; (1) Effect of Time on soil Temperature change over Multi-years, (2) Effect of Load on soil temperature change over Multi-years, (3) Effect of Depth on soil temperature change over Multi-years, (4) Effect of Doubling ΔT of inlet and outlet of GLHE on soil temperature change over ...
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Characterization of Viscoelastic Properties of a Material Used for an Additive Manufacturing Method

Characterization of Viscoelastic Properties of a Material Used for an Additive Manufacturing Method

Date: December 2013
Creator: Iqbal, Shaheer
Description: Recent development of additive manufacturing technologies has led to lack of information on the base materials being used. A need arises to know the mechanical behaviors of these base materials so that it can be linked with macroscopic mechanical behaviors of 3D network structures manufactured from the 3D printer. The main objectives of my research are to characterize properties of a material for an additive manufacturing method (commonly referred to as 3D printing). Also, to model viscoelastic properties of Procast material that is obtained from 3D printer. For this purpose, a 3D CAD model is made using ProE and 3D printed using Projet HD3500. Series of uniaxial tensile tests, creep tests, and dynamic mechanical analysis are carried out to obtained viscoelastic behavior of Procast. Test data is fitted using various linear and nonlinear viscoelastic models. Validation of model is also carried out using tensile test data and frequency sweep data. Various other mechanical characterization have also been carried out in order to find density, melting temperature, glass transition temperature, and strain rate dependent elastic modulus of Procast material. It can be concluded that melting temperature of Procast material is around 337°C, the elastic modulus is around 0.7-0.8 GPa, and yield ...
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The Measurement of the Third-order Elastic Constants for La3ga5sio14 (Lgs) and La3ga55ta05o14 (Lgt) Single Crystal

The Measurement of the Third-order Elastic Constants for La3ga5sio14 (Lgs) and La3ga55ta05o14 (Lgt) Single Crystal

Date: December 2013
Creator: Karim, Md Afzalul
Description: Recently, the development of electronic technology towards higher frequencies and larger band widths has led to interest in finding new piezoelectric materials, which could be used to make filters with larger pass band widths and oscillators with better frequency stability. Langasite (La3Ga5SiO14, LGS) and its isomorphs have enticed considerable attention of researchers as a potential substrate material for piezoelectric device applications because of its high frequency stability and fairly good electromechanical coupling factors for acoustic wave devices. Nonlinear effect including drive level dependence, mode coupling, force-frequency effect and electroelasic effect are critical for the design of these devices. Third-order elastic constants (TOEC) play an important role in a quantitative analysis of these nonlinear effects. In particular these elastic constants are of great importance when the BAW (Bulk Acoustic Wave) and SAW (Surface Acoustic Wave) sensors of force, acceleration and so on are designed. Until now Langasite (LGS) and Langatate (LGT) crystal resonators have been qualified in terms of quality factor, temperature effect, isochronism defect and material quality. One of the most important advantages of those crystals is that they will not undergo phase transitions up to its melting temperature of 1450°. Presently there is no data on TOEC of LGT ...
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A Textual Analysis of the Closer and Saving Grace: Feminist and Genre Theory in 21St Century Television

A Textual Analysis of the Closer and Saving Grace: Feminist and Genre Theory in 21St Century Television

Date: December 2013
Creator: Stone, Lelia M.
Description: Television is a universally popular medium that offers a myriad of choices to viewers around the world. American programs both reflect and influence the culture of the times. Two dramatic series, The Closer and Saving Grace, were presented on the same cable network and shared genre and design. Both featured female police detectives and demonstrated an acute awareness of postmodern feminism. The Closer was very successful, yet Saving Grace, was cancelled midway through the third season. A close study of plot lines and character development in the shows will elucidate their fundamental differences that serve to explain their widely disparate reception by the viewing public.
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Shortened in Vivo Bioconcentration Factor Testing in Cyprinus Carpio

Shortened in Vivo Bioconcentration Factor Testing in Cyprinus Carpio

Date: December 2013
Creator: Cantu, Mark
Description: Bioconcentration factor testing serves as the most valuable surrogate for the assessment of bioaccumulation. The assessment of potentially harmful chemicals is crucial to not only the health of aquatic environments, but to humans as well. Chemicals that possess the ability to persist in the environment or that have the potential to bioaccumulate, pose a greater risk to organisms that are exposed to these chemicals. The Organization for Economic Cooperation and Development Guideline 305 outlines specific protocols to run an accurate and reliable aquatic flow-through test. However, since its adoption in 1996, very few changes have been made to accommodate the endeavor to lowering the amount of test species to run one of these said tests. Running an aquatic flow-through test, according to 305, takes much time and money as well as numerous amounts of fish. Such burdens can be eliminated through simple modifications to the standard protocols. In this study, we propose an abbreviated study design for aquatic bioconcentration testing which effectively alleviates the burdens of running a flow-through test. Four chemicals were used individually to evaluate the usefulness of the proposed shortened design; 4-Nonyphenol, Chlorpyrifos, Musk Xylene, and DDT. The study consisted of exposing Cyprinus carpio for 7 days ...
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The Acute Hormonal Response to the Kettlebell Swing Exercise

The Acute Hormonal Response to the Kettlebell Swing Exercise

Date: December 2013
Creator: Budnar Jr., Ronald Gene
Description: The purpose of this investigation was to examine the acute hormonal response to a bout of kettlebell swing exercise. Ten healthy men (19-30 y, 23.6 ± 3.5 y, 174.6 ± 5.7 cm, 78.7 ± 9.9 kg) who were engaged in resistance training at least twice per week but were inexperienced with kettlebell swings participated in this study. Participants were familiarized with the kettlebell swing exercise during an initial visit. During the subsequent experimental protocol visit, participants performed 12 rounds of 30 seconds of 16-kg kettlebell swings alternated with 30 seconds of rest. Heart rate (HR) and rating of perceived exertion (RPE) were measured at the end of every round of swings. Fasted blood samples were collected pre-exercise (PRE), immediately post (IP), 15 minutes post (P15), and 30 minutes post exercise (P30) and analyzed for total testosterone (T), growth hormone (GH), cortisol, and lactate concentrations. Participants completed a total of 227 ± 23 swings (average swings per round: 19 ± 2). HR and RPE increased significantly (P < 0.05) throughout the exercise protocol. Lactate concentrations were significantly increased at all post exercise time points compared to PRE. T was significantly increased at IP compared to PRE. GH was significantly increased at ...
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Ten Years After 9/11: the Structure and Use of Intelligence Units in Local Policing

Ten Years After 9/11: the Structure and Use of Intelligence Units in Local Policing

Date: December 2013
Creator: Hollier, Michael P.
Description: The events of September 11, 2001 marked a paradigm shift in the strategy within all levels of law enforcement in the United States. Intelligence became the watchword of the day and with it, the movement to incorporate strategic and tactical information in daily policing. Yet while the philosophy was clear, the method and manner to which agencies were left to achieve these goals was much less designed. The federal government allocated funds to assist help agencies incorporate an intelligence function in their daily operations but which agencies and to what degree remains unclear even today. This study seeks to determine the current state of use of intelligence in municipal law enforcement agencies in the State of Texas ten years after 9/11. Through use of a survey, it assesses the frequency of use of intelligence units in local police departments in the State of Texas, identifies commonalities in their structure, and determines the state of their effectiveness.
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The Effect of It Process Support, Process Visualization and Process Characteristics on Process Outcomes

The Effect of It Process Support, Process Visualization and Process Characteristics on Process Outcomes

Date: December 2013
Creator: Al Beayeyz, Alaa
Description: Business process re-engineering (part of the Business Process Management domain) is among the top three concerns of Information Technology (IT) leaders and is deemed to be one of many important IT leveraging opportunities. Two major challenges have been identified in relation to BPM and the use of IT. The first challenge is related to involving business process participants in process improvement initiatives using BPM systems. BPM technologies are considered to be primarily targeted for developers and not BPM users, and the need to engage process participants into process improvement initiatives is not addressed, contributing to the business-IT gap. The second challenge is related to potential de-skilling of knowledge workers when knowledge-intensive processes are automated and process knowledge resides in IT, rather than human process participants. The two identified challenges are not separate issues. Process participants need to be knowledgeable about the process in order to actively contribute to BPM initiatives, and the loss of process knowledge as a result of passive use of automated systems may further threaten their participation in process improvement. In response to the call for more research on the individual impacts of business process initiatives, the purpose of this dissertation study is to understand the relationship ...
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