UNT Theses and Dissertations - 1,715 Matching Results

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The Acceptance and Usage Intention of Menstrual Underwear: This research aims to study the consumer perception, acceptance and adoption of menstrual underwear as it provides a sustainable option to the current feminine hygiene management solutions widely used in the consumer market in the U.S. In addition to the functional and utilitarian aspect of the underwear, I further delve into studying the social psychological effect the usage of the underwear (i.e., hedonic) has on consumer adoption. A longitudinal, qualitative study employing a three-step approach was conducted. The findings suggest that participants have never heard of menstrual underwear and did not fully understand the phenomenon. Contradicting responses between subject's attitudes and behavior towards the environment were revealed although, menstrual underwear had a positive psychological effect on the participants. Overall, menstrual underwear was most accepted amongst participants in the study.
Analysis of Regional Magazine Content and Engagement on Twitter: This two-part mixed-methods study analyzed the Twitter activity of two regional magazines – D Magazine and Texas Monthly – and how social media editors implement strategies to maintain journalistic integrity (news values, topics, and ethical standards) while increasing engagement.
And the Stereotype Award Goes to...: A Comparative Analysis of Directors using African American Stereotypes in Film: This study examines African American stereotypes in film. I studied six directors, Kathryn Bigelow, Spike Lee, the Russo Brothers, Ryan Coogler, Tate Taylor, and Dee Rees; and six films Detroit, BlacKkKlansman, Captain America: The Winter Soldier, The Help, and Mudbound. Using the framework of critical race theory and auteur theory, I compared the common themes between the films and directors. The main purpose of my study is to see if White or Black directors predominantly used African American stereotypes. I found that both races of directors rely on stereotypes for different purposes. With Black directors, the stereotype was explained further through character development, while the White directors used the stereotype at face value with no further explanation.
Biomedical Semantic Embeddings: Using Hybrid Sentences to Construct Biomedical Word Embeddings and its Applications: Word embeddings is a useful method that has shown enormous success in various NLP tasks, not only in open domain but also in biomedical domain. The biomedical domain provides various domain specific resources and tools that can be exploited to improve performance of these word embeddings. However, most of the research related to word embeddings in biomedical domain focuses on analysis of model architecture, hyper-parameters and input text. In this paper, we use SemMedDB to design new sentences called `Semantic Sentences'. Then we use these sentences in addition to biomedical text as inputs to the word embedding model. This approach aims at introducing biomedical semantic types defined by UMLS, into the vector space of word embeddings. The semantically rich word embeddings presented here rivals state of the art biomedical word embedding in both semantic similarity and relatedness metrics up to 11%. We also demonstrate how these semantic types in word embeddings can be utilized.
Biopedagogy of Rumination and Regurgitation: Regurgitating test answers, needing more time to digest a reading, or being spoon fed information are just a few of many digestive metaphors currently used in education. In taking seriously the use of these metaphors, I suggest that humans recognize a connection, on some level, between the mental act of taking in and processing knowledge and the physical act of digestion, yet in educational discourse, these processes are more often than not cast in a negative light. The following philosophical exploration begins with a close look at two digestive practices, rumination and regurgitation, in non-human animals such as ruminants, seed-eating birds, and honey bees. By looking to these animals, it becomes possible to rehabilitate an affirmative human version of rumination and regurgitation in which our physical and mental selves are intrinsically intertwined in and through bodily education. The works of Giorgio Agamben, Tyson E. Lewis, Nathan Snaza, and Vinciane Despret support a theoretical framework which moves beyond human-centered education towards the development of an inhuman biopedagogy that embraces digestion rather than discriminates against it. I offer practical applications of rumination and regurgitation, shedding light on moments when rumination and regurgitation are already present in education, and introduces slight adjustments to these practices to enhance their positive digestive dimensions. The multi-species practices of rumination and regurgitation invite students and educators alike to slow down, return to material that needs to be rechewed, and ultimately to embrace an embodied experience of education.
Construction Management Methods and Techniques in Army Tactical Shelter: This thesis presents a research effort aimed at developing using construction methods and techniques in army tactical shelter. The beginning step focuses on developing and identifying different activities and work breakdown structure applicable in shelter prototype. The next step focuses on identifying resource allocation. This include allocate resources based on the delivered project as per alternative one and for the second alternative as optimization, resource allocation modified and tried to level and minimize resource peak. In addition, the cost calculated for the whole project as well as for each WBS and activities which consider as alternative one and in the second alternative, cost mitigation applied according to available resources and adjusting predecessors and successors of each activity. In conclusion, two alternatives compared, available outcome presents, and future work suggested for the project team to continue this effort.
Creating the Character of North Texas: Demographics and Geography, 1841-1861: Several historians have identified North Texas as constituting a unique cultural region in antebellum Texas, due to the more limited cotton and slave economies and greater opposition to secession. Different settlement patterns have been put forward as an explanation for the distinct "character" of North Texas, with North Texas being portrayed as being settled largely by migrants from the Upper South while the rest of the state was primarily settled by Lower Southerners. The argument rests on the assumption of differing economic and political cultures between Upper and Lower Southerners. This study investigates migration into North Texas counties and the economic life and secession vote in those counties. It challenges the simplistic dichotomy between migrants from the Upper and Lower South by demonstrating the similar rates at which these two groups grew cotton and owned slaves. It also illustrates how geographic considerations better explain the apparent distinctions between North Texas and the rest of the state. Transportation limitations are likely the reason for the more limited cultivation of cotton and, consequently, the lowered importance of slavery in North Texas. Concerns about Indian depredations following the removal of federal troops in the case of secession also seem to have promoted Unionist turnout in the secession vote. The seemingly unique qualities of North Texas appear to have been more practical than political.
Depression, Religious Behaviors and Social Support as Predictors of Health-Related Quality of Life among HIV Positive Individuals: The goal of the current study was to evaluate the ways in which religious behaviors and perceived social support are associated with the relationship between depressive symptoms and health-related quality of life for this group. We hypothesized (1) that religious behaviors moderate the relationship between depressive symptoms and health-related quality of life, (2) perceived social support mediates the relationship between depressive symptoms and health-related quality of life and (3) that religious behaviors moderate the mediational indirect effect of perceived social support in the depression and health-related quality of life relationship. Findings from a sample of 244 HIV-positive individuals provided evidence to support direct, conditional, and indirect effects on the depressive symptoms and health-related quality of life relationship. A discussion of the findings, implications for future research and clinical practice are provided.
Design Method of Cold-Formed Steel Framed Shear Wall Sheathed by Structural Concrete Panel: The objective of this research is developing a new method of design for cold-formed steel framed shear wall sheathed by ¾" thick USG structural panel concrete subfloor using a predictive analytical model and comparing the results obtained from the model with those achieved from real testing to verify the analytical model and predicted lateral load-carrying capacity resulted from that. Moreover, investigating the impact of various screw spacings on shear wall design parameter such as ultimate strength, yield strength, elastic stiffness, ductility ratio and amount of energy dissipation is another purpose of this research.
Development of an Optical Carbon Dioxide Sensor and Modeling of Metal-Metal Interactions for Sensor Applications: An investigation of luminescent sensing has been presented. Neutral Red, a common pH luminescent sensor, was shown to be an effective carbon dioxide sensor for the first time. Sensing experiments were performed both through fluorometric and fluorescent microscopy studies, giving rise to the possibility of carbon dioxide sensing for biological applications. Neutral Red was benchmarked against the well-established carbon dioxide sensor Pyranine (8-hydroxypyrene-1,3,6-trisulfonic acid trisodium salt), HPTS. Neutral Red was shown to have improved response times and higher consistency within the sensing drift compared to HPTS. Trinuclear Au(I) complexes have previously shown to sense metal ions through changes in their luminescent properties. A computational study on d10-d10 interactions, which exist in complexes where Cu+, Ag+, and Au+ are intercalated with [Au(μ-C2,N3-ethylImidazolate)]3 in the form of both half and full sandwich adducts. Binding energies, total density plots, and Morse and Dunham analyses of potential energy surfaces are employed to better understand the metal-metal interactions and the effects of electron correlation, basis set superposition error, and dispersion of metallophilic interactions of the adduct complexes. As metal-metal interactions within these types of complexes become better understood, the tuning of trinuclear Au(I) complexes for luminescent sensing of metals becomes increasingly possible.
"Driving Lessons" and Other Stories: A study through short stories of the emotional effects on close family relationships before and after a traumatic death.
Effects of Customer's Evaluation about Instagram Attributes towards Purchase Intentions for Small Apparel Retailers: Application of Social Capital Theory: Small apparel retailers face extreme competition with larger retailers. Large retailers have the upper hand in resources to stay updated with various trends, specifically social media. Social media has lowered the barriers to enter the retail industry. However, once these small retailers enter, half of them fail because they don't attract and retain customers. Small-medium enterprises (SMEs) greatly impact the economy, so it is important to study various facets of their business to increase performance. The purpose of this study is to investigate customer's development of social capital (i.e. affiliation, responsiveness, shared values, norm of reciprocity) in small apparel retailer's Instagram page that ultimately lead to purchase intentions for the retailer. Perceived benefits (i.e. perceived usefulness, perceived enjoyment) are also investigated in relation to purchase intentions. More specifically, social bonding, brand identification and trust are examined as mediating variables between the perceived level of social capital, perceived benefits and purchase intentions. Over a 3-month period, 200 responses were collected from students at a southern university. The findings reveal that younger customers develop a relationship with retailers on Instagram and it transfers to behavioral outcomes towards the retailer. The theoretical contribution of this study draws from the lack of literature for small apparel retailer and social capital built in Instagram, leading to purchase intentions. Managers can implement the findings into their social media marketing strategies to improve business performance. Lastly, this study has methodological limitations that creates opportunity for future studies.
The Effects of D.A.N.C.E. Training on Staff Teaching Interactions, Child Goal Responding, and Staff-Child Harmonious Engagement in an Autism Intervention Organization: This study was conducted at a nonprofit organization whose mission is to provide responsive, caring, and effective services to children with autism. The purpose of this study was to analyze the effects of D.A.N.C.E. training on teaching interactions, harmonious engagement, instructional engagement, and progress on child goals for two early and intensive behavioral intervention (EIBI) staff and the children in their care. A multiple baseline design was employed to evaluate the effectiveness of the training. Results indicated that staff increased teaching interactions and maintained instructional engagement; that children increased target goal responses; and that harmonious engagement between the two increased for both dyads. These results are discussed in the context of measurement, training, and social validity.
Evaluating the Effects of the D.A.N.C.E Training System on Staff and Child Responding: The purpose of this study was to evaluate and systematically replicate the effectiveness of the DANCE training for a staff member to be an effective change agent for the children in her care, while maintaining the organization's and family's values. The study was conducted in an organization that values and focuses on building rapport, avoids the use of coercive procedures, and teaches children in a caring and meaningful way. A multiple baseline across indoor and outdoor settings was used to evaluate the effects of the package. Results demonstrated that DANCE training was an effective procedure to teach a staff member how to increase teaching interactions. Harmonious engagement, instructional engagement and vocal approximations also increased while challenging behavior maintained at zero levels.
Examining the Relationship between Bullying Experiences, Parental Partner Violence, and Partner Violence in Young Adulthood: The current study used secondary analysis of existing data to examine associations between bullying experiences, parental partner violence, and partner violence in young adulthood. We hypothesized that bullying in adolescence would be associated with witnessing parental IPV in adolescence and IPV in young adulthood. We believed that deficits in social information processing, particularly hostile attribution biases, would be associated with adolescent bullying. Lastly, we believed that decentering would act as a moderator, affecting the relationship between adolescent bullying and IPV in adulthood. We used correlational and moderation analyses to examine these hypotheses and found that relational bullying victimization was associated with witnessing parental IPV, and the frequency of bullying perpetration was associated with IPV perpetration in adulthood. We found that some aspects of bullying victimization were negatively associated with being unassertive, bullying perpetration was associated with hostile attribution biases, and the relationship between bullying and IPV was significant only at certain levels of decentering maturity.
Exploring Caffeyl-Lignin Biosynthesis in Cleome hassleriana and Polymerization of Caffeyl Alcohol in Arabidopsis thaliana: C-lignin (caffeyl-lignin) is a novel linear lignin polymer found in the seed coats of several non-crop plants, notably Vanilla planifolia (Vanilla), Jatropha Curcas (Jatropha), and Cleome hassleriana (Cleome). C-lignin has several advantages over normal G/S-lignin, found in the majority of lignocellulosic biomass, for valorization in the context of bioprocessing: less cross-linking to cell wall polysaccharides (less recalcitrant biomass), ordered linkages between monomers (homogeneous polymer), and no branching points (linear polymer). These properties make C-lignin an attractive replacement for native lignin in lignocellulosic biomass crops. The seed coats of Cleome hassleriana (Cleome) synthesize G-lignin during early seed maturation, then switch to synthesis of C-lignin during late maturation. This switch to C-lignin in Cleome seed coats is accompanied by loss of caffeoyl-CoA 3-O-methyltransferase (CCoAOMT) and caffeic acid 3-O-methyltransferase (COMT) activities, along with changes in transcript abundance of several lignin related genes. The focus of this research thesis is to understand the biochemical changes leading to C-lignin deposition in Cleome hassleriana seed coats, and to explore the ability of Arabidopsis thaliana seedlings to polymerize caffeyl alcohol to C-lignin. In this thesis, candidate transcripts were implicated in C-lignin biosynthesis by differential gene expression analysis of transcripts in seed coat tissues at 8-18 days after pollination (DAP) and in non-seed coat tissues. Three candidate genes were selected for recombinant expression and their in vitro kinetic properties were measured with potential substrates. Of the three candidates, a cinnamyl alcohol dehydrogenase (ChCAD5) was found to have high transcript levels during C-lignin formation and have a novel preference for converting caffealdehyde to caffeyl alcohol, the precursor of C-lignin. To determine if accumulation of caffeyl alcohol is sufficient for polymerization of C-lignin, Arabidopsis seedlings grown in a xylem induction system were supplied caffeyl alcohol. Polymerization of caffeyl alcohol was not found to occur in this Arabidopsis system, suggesting the …
Exploring Predictors of Self-Forgiveness: Self-forgiveness is a growing sub-field of the broader study of forgiveness, and initial research has linked self-forgiveness to positive mental and physical health outcomes. However, the extant literature on self-forgiveness is in its infancy, and there is a need for further research to understand the predictors of self-forgiveness and the clinical implications that might follow. The current study aimed to build on the extant literature by exploring two sets of predictors of self-forgiveness: (1) the four Rs as proposed in Cornish and Wade's four-R therapeutic model of self-forgiveness (i.e., responsibility, remorse, restoration, and renewal) and (2) personality as measured by the Big Five. This study also explored how responsibility for the offense and humility might moderate the relationship between self-forgiveness and well-being. Participants were undergraduates recruited from a large, public university in the southwestern United States. They were instructed to describe a recent interpersonal offense they had committed and complete a questionnaire. The overall results suggest that there is a negative cross-sectional relationship between responsibility, remorse, and restoration with self-forgiveness and that, when taken together, the four-Rs account for a significant amount of variance in self-forgiveness. Neuroticism was negatively associated with self-forgiveness while conscientiousness and extraversion were positively associated with self-forgiveness. The Big Five collectively accounted for a significant amount of variance in self-forgiveness. Finally, neither responsibility or humility were found to moderate the relationship between self-forgiveness and well-being. Limitations, suggestions for future research, and clinical implications are discussed.
Exploring Psychosocial Correlates of Disordered Eating among Male Collegiate Athletes: In research on disordered eating in female collegiate athletes, psychosocial correlates including elevated scores on measures of body image concerns, weight pressures, sociocultural internalization, and mood state were found significantly more often in either the eating disorder or symptomatic group as opposed to the asymptomatic group. Unique or nuanced pressures exist for male athletes as well, specifically a different ideal for body image, often described by a drive for muscularity. I examined these effects in a sample of 698 male collegiate athletes. All participants completed questionnaires, which provided measures of drive for muscularity, social desirability, body satisfaction, negative affect, sociocultural pressures, sport weight pressures, and internalization and social comparison among other factors not pertinent for this analysis as part of a larger study. Exploratory factor analysis confirmed the existence of five factors (general and sport pressures, internalization, body dissatisfaction, negative affect and drive for muscularity) to which a sixth was added to reflect dietary intent, all of which are explained in the Petrie and Greenleaf sociocultural model. A logistic regression showed that dietary intent and drive for muscularity differentiated significantly between the symptomatic/eating disordered athletes and those who were asymptomatic.
Fabrication and Testing of Biomimetic Microstructures for Walkway Tribometers: The main objective of this work is to give contribution in both additive manufacturing (AM) and tribometry derived from the application and study of materials available with the use of biomimetic designs. Additional contributions are determining what effects treatments for flooring surfaces may have on the dynamic coefficient of friction and the effects of these products on common surfaces. The validity of the proposed methodology for a proof of concept was demonstrated by comparing measured dynamic coefficient of friction for designs using standardized equipment and comparing these values to plantar skin tested using an accepted and standardized testing method that has been extensively researched and validated. Initial biomimetic designs and characteristics unique to each design were researched and compared. Eleven designs were selected to be fabricated, tested, and compared to select the most desirable applications for further investigation. Research into potential treatments commercially available for use was done to determine the efficacy of these products. Prototype sensor designs were selected and fabricated using direct light processing (DLP) technology. Examination of the measured values was done through an analysis of the variances in the response variable and comparisons using Fisher and Tukey pairwise comparison method. Future work recommendations are provided for further development and improvement of the topics presented in this thesis.
Famine Fighters: American Veterans, the American Relief Administration, and the 1921 Russian Famine: This study argues that the American Relief Administration (ARA) operationally and culturally was defined by the character and experiences of First World War American military veterans. The historiography of the American Relief Administration in the last half-century has painted the ARA as a purely civilian organization greatly detached from the military sphere. By examining the military veterans of the ARA scholars can more accurately assess the image of the ARA, including what motivated their personnel and determined their relief mission conduct. Additionally, this study will properly explain how the ARA as an organization mutually benefited and suffered from its connection to the U.S. military throughout its European missions, in particular, the 1921 Russian famine relief expedition.
A Feasibility Study of Cellular Communication and Control of Unmanned Aerial Vehicles: Consumer drones have used both standards such as Wi-Fi as well as proprietary communication protocols, such as DJI's OcuSync. While these methods are well suited to certain flying scenarios, they are limited in range to around 4.3 miles. Government and military unmanned aerial vehicles (UAVs) controlled through satellites allow for a global reach in a low-latency environment. To address the range issue of commercial UAVs, this thesis investigates using standardized cellular technologies for command and control of UAV systems. The thesis is divided into five chapters: Chapter 1 is the introduction to the thesis. Chapter 2 describes the equipment used as well as the test setup. This includes the drone used, the cellular module used, the microcontroller used, and a description of the software written to collect the data. Chapter 3 describes the data collection goals, as well as locations in the sky that were flown in order to gather experimental data. Finally, the results are presented in Chapter 4, which draws limited correlation between the collected data and flight readiness Chapter 5 wraps up the thesis with a conclusion and future areas for research are also presented.
Finding a Data-Driven Definition of Binge-Watching: Binge-watching, the act of watching large amounts of television at a time, has become a popular phenomenon internationally; however, it has yet to be sufficiently defined. In order to define binge-watching, data was collected on specific watching instances from 216 undergraduate students at a large research university. Hierarchical and k-means cluster analyses were conducted in Phase I to empirically determine how binge-watching should be defined. In Phase II, that definition was tested by correlating the number of instances of binge-watching in a one-week period, collected by seven days of daily diary logs, with several theoretically related measures including body mass index, dissociative tendencies, psychological distress, compulsion to watch, boredom proneness, and escapism through watching. The data-driven definition was found to be that eight hours or more of continuous watching was binge-watching, while anything less than that was not. In Phase II, the frequency of binge-watching through the seven-day period was calculated based on that new definition. The frequency of binge-watching was positively correlated with body mass index and dissociative tendencies with statistical significance at the alpha = .05 level. Compulsion to watch was not statistically significant; however, there was a positive correlation. These findings indicate that the proposed data-driven definition has concurrent validity. Psychological distress, boredom proneness, and escapism through watching were not statistically significantly related to binge-watching frequency, nor did the effect sizes indicate a correlation may exist. Potential reasons for these results are discussed. The definition found in this study will be helpful to other researchers as research into binge-watching continues to grow.
Irrigation Methods and Their Effects on Irrigation Water Efficiency in High Tunnels: Improving water efficiency is and will continue to be a top concern to meet the world food production demands for a growing population. By having a clear understanding of water efficiencies, communities will be able to address these concerns from an economic standpoint and use more productive methods to grow food and limit water consumption. This study examines the water efficiencies of three irrigation methods over a single growing season in southeastern Oklahoma. Two crops, tomatoes and cucumbers, were grown using drip irrigation, a self-wicking container, and a non-circulating hydroponics barrel. Results at the end of the season showed the drip irrigation method had the highest water efficiency in terms of yield of product over water applied for both crops. The drip irrigation method also had the lowest associated set up costs and second lowest time requirements after the hydroponics method. These results were found to be consistent with other studies that compared drip irrigation to other irrigation methods and showed drip to have the highest water efficiencies.
Is it Really a Different World? Colorism Then and Now in Black Sitcoms: This study focuses on dark-skinned, Black women's representation in Black sitcoms. Through a mixed-methods use of a comparative textual analysis and focus group, the content and context of episodes from A Different World and Dear White People are explored to illustrate portrayals of dark-skinned, Black women and how these portrayals affect dark-skinned, Black women's self-esteem. Its findings contribute to colorism research by exploring colorism in Black sitcoms. Because this topic is largely unexplored, this study seeks to begin a conversation about dark skinned, Black women's representation in Black sitcoms. The main objective is to ultimately improve their depictions and roles in Black sitcoms and hold Black creatives responsible for the role they play in promoting colorism and its ultimate effect on Black women's self esteem.
Meaning in Transition: An Ethnographic Study of the Cultural Construction of Health, Identity and Brands among Young Adults: This study explored the lived experience of Gen Z adults in a liminal life-stage crisis where the symbolic meaning of health, identity and brands are in transition. Sixteen ethnographic in-home interviews with college students were conducted and analyzed using Geertz's interpretive and Turner's symbolic anthropology. A hermeneutic textual analysis was used to interpret three types of phenomenological data: text, pictures and collages. An "incubation" step was key in the creative interpretation process where the leap from data to abstract themes was made. Environmental circumstances like money, time, resources and social networks change the quality of health, but the fundamental health explanatory system of a young person is a reflection of their family of origin experiences. Women associate health with mental health-independence and empowerment. Men define health as physical health-food and cooking. Skills such as cooking and shopping as well as the consumption of water, cannabis and other complementary products impact health and identity. Three health worldview themes emerged: health as negotiating identity; creating home; and taking responsibility. Implications for branding and public information campaigns to change the health beliefs and practices of young adults are offered. This thesis closes with a reflection on the "research study," the dominant symbol in the practice of research as a way to analyze the fluid role of consumer anthropology in a capitalist system.
Microfluidic-Based Fabrication of Photonic Microlasers for Biomedical Applications: Optical microlasers have been used in different engineering fields and for sensing various applications. They have been used in biomedical fields in applications such as for detecting protein biomarkers for cancer and for measuring biomechanical properties. The goal of this work is to propose a microfluidic-based fabrication method for fabricating optical polymer based microlasers, which has advantages, over current methods, such us the fabrication time, the contained cost, and the reproducibility of the microlaser's size. The microfluidic setup consisted of microfluidic pumps and a flow focusing droplet generator chip made of polydimethylsiloxane (PDMS). Parameters such as the flow rate (Q) and the pressure (P) of both continuous and dispersed phases are taken into account for determining the microlaser's size and a MATLAB imaging tool is used to reduce the microlaser's diameter estimation. In addition, two applications are discussed: i) electric field measurements via resonator doped with Di-Anepps-4 voltage sensitive dye, and ii) strain measurements in a 3D printed bone-like structure to mimic biomedical implantable sensors.
Optical Brain Imaging of Motor Cortex to Decode Movement Direction using Cross-Correlation Analysis: The goal of this study is to determine the intentional movement direction based on the neural signals recorded from the motor cortex using optical brain imaging techniques. Towards this goal, we developed a cross-correlation analysis technique to determine the movement direction from the hemodynamic signals recorded from the motor cortex. Healthy human subjects were asked to perform a two-dimensional hand movement in two orthogonal directions while the hemodynamic signals were recorded from the motor cortex simultaneously with the movements. The movement directions were correlated with the hemodynamic signals to establish the cross-correlation patterns of firings among these neurons. Based on the specific cross-correlation patterns with respect to the different movement directions, we can distinguish the different intentional movement directions between front-back and right-left movements. This is based on the hypothesis that different movement directions can be determined by different cooperative firings among various groups of neurons. By identifying the different correlation patterns of brain activities with each group of neurons for each movement, we can decode the specific movement direction based on the hemodynamic signals. By developing such a computational method to decode movement direction, it can be used to control the direction of a wheelchair for paralyzed patients based on the changes in hemodynamic signals recorded using non-invasive optical imaging techniques.
Optimization of RSA Cryptography for FPGA and ASIC Applications: RSA cryptography is one of the most widely used cryptosystems in the world. FPGA/ASIC implementations for the classic RSA cryptosystem have high resource utilization due to the use of the Extended Euclid's algorithm for MOD inverse generation, the MOD exponent operation for encryption and decryption, and through non finite-field arithmetic. This thesis translates the RSA cryptosystem into the finite-field domain of arithmetic which greatly increases the range of encryption and decryption keys and replaces the MOD exponent with a multiplication. A new algorithm, the SPX algorithm, is presented and shown to outperform Euclid's algorithm, which is the most widely used mechanism to compute the GCD in FPGA implementations of RSA. The SPX algorithm is then extended to support the computation of the MOD inverse and supply decryption keys. Lastly, a finite-field RSA system is created and shown to support character encryption and decryption while being designed to be integrated into any larger system.
Phenotype Analysis of the CISD Gene Family Relative to Mitochondrial Function in Caenorhabditis elegans: NEET proteins belong to a unique class of [2Fe-2S] cluster proteins that have been shown to participate in various biological processes such as regulating iron, reactive oxygen species and apoptosis within the cell and are localized to the mitochondria. Disruption of the mitochondrial NEET proteins are associated with different human diseases such as obesity, neurodegeneration, cancer and diabetes. In humans, a missense mutation in the CISD2 gene results in a heritable multisystem disorder termed Wolfram syndrome 2 (WFS2), a disease which displays an early onset of juvenile diabetes and various neuropsychiatric disorders. The C. elegans genome contains three previously uncharacterized cisd genes: cisd-1, which has homology to the human CISD1 and CISD2, and cisd-3.1 and cisd-3.2, both of which have homology to the human CISD3. Disruption of the cisd-3 gene(s) function results in mis-regulation of proteostasis in the mitochondria, whereas cisd-1 and cisd-3.1 disruption impacts proteostasis in the endoplasmic reticulum. Reduction of cisd-3.2 gene function also leads to a developmental delay in C. elegans. A knockout mutation of the cisd-3.2(pn68) gene function results in various germline defects including delayed development progression and morphological defects. Furthermore, I show the cisd gene(s) and protein expression profiles is present relative to sex, tissue type and developmental stages. This work is significant because it provides further insight of the essential role of CISD-3 relative to C. elegans. Furthermore, my studies can contribute to new genetic discoveries that will widen the scientific research relative to NEET protein family studies.
Political Humility: Engaging Others with Different Political Perspectives: The purpose of this study was to explore theorized predictors, intrapersonal effects, and interpersonal effects of political humility. Participants (N = 469) were adults recruited from Amazon's Mechanical Turk and undergraduate students who completed a series of measures online. First, I found that political humility is (a) positively associated with openness to experience, (b) negatively associated with political commitment, and (c) not significantly related to political diversity in one's social network. Second, regarding intrapersonal effects, I found that political humility was (a) positively associated with low emotional reactivity when presented with a different political perspective, (b) identifying positive aspects of the opposite political perspective, and (c) not significantly related to identifying negative aspects of one's own political perspective. Third, I found that both the self-reported political humility of the participant and the perceived political humility of the individual who hurt or offended the participant were positively associated with one's motivation to forgive the individual. Fourth, I found that the association between political humility and forgiveness was not significantly moderated by how close the participant felt to the offender before the hurt or offense. I conclude by discussing my findings in light of the present literature on humility.
Press Freedom in Saudi Arabia War Reporting: A Case Study of the Gulf and Yemen Wars: This study examined press freedom in Saudi Arabia coverage in two study periods, which are the Gulf and Yemen wars. Six Saudi newspapers, which represent Saudi regions, have been content analyzed. They are: Al Riyadh, Al Yaum, Al Nadwah, Mecca, Okaz, and Al Jazirah. The major questions are: What are the most salient issues Saudi newspapers dealt with in their editorials during the study period? What are the differences between the two periods of study? And what are the differences between the editorial features of the Gulf and Yemen wars? The normative theory-press freedom theory was conducted for this study. The results support the lack of press freedom during the Gulf War. In contrast, some newspapers have significantly improved their performance during the Yemen War, using a higher level of press freedom.
"Running from My Youth": Essays: Running From My Youth: Essays is a collection of nonfiction essays that explore important moments and experiences from the narrator's youth, and how he has addressed and remembered them in the years since. Some of the essays explore the narrator's time as a distance-runner, while others explore the awkwardness and discomfort onset by religion and nudity.
A Shaping Procedure for Introducing Horses to Clipping: The purpose of the current study is to evaluate a procedure that can be used to introduce horses to clipping. Negative reinforcement was used in a shaping paradigm. Shaping steps were conducted by the handler, starting with touching the horse with the hand, then touching the horse with the clippers while they are off, culminating with touching the horse with the clippers while they are on. When a horse broke contact with either the hand or the clippers, the hand or the clippers were held at that point until the horse emitted an appropriate response. When the horse emitted an appropriate response, the clippers were removed, and the handler stepped away from the horse. For all eight horses, this shaping plan was effective in enabling the clipping of each horse with minimal inappropriate behavior and without additional restraint. The entire process took under an hour for each horse.
The Student Nonviolent Coordinating Committee and Racial Dynamics: The Importance of SNCC's Arkansas Project, 1962-1966: In this thesis I look at the Arkansas Project and more specifically the racial dynamics within the project and the surrounding communities in Arkansas where SNCC engaged to assist the residents fight for their civil rights. In addition, I analyze how the differences in the urban and rural communities were affected by the racial dynamics of the project's leadership. The Arkansas project was led by William Hansen, a white man, which made him and the project unique from not only other SNCC projects, but other civil rights organizations. This distinction made the strategy that had to be implemented with the project staff internally and also externally in the Arkansas communities different because his race had to be taken into consideration for all purposes. Another aspect that came into play in Arkansas was the fact that some of their activities occurred in urban communities and others occurred in rural communities. These difference in communities affected not only how the local blacks received the SNCC volunteers, but also affected how local whites received the SNCC volunteers. Although the fact that the Arkansas Project had a white field director made it unique and the racial dynamics worthy of scholarly investigation, Bill Hansen's racial identity was far from the only reason that the organization's work in Arkansas is historically significant. This thesis also looks at the important activities in which SNCC engaged and impacted because of their presence in Arkansas. Of those activities, SNCC impacted the creation of several local groups where local citizens helped to fight for their civil rights, in fighting for their civil rights, those groups engaged in sit-ins, protests, and fighting legal battles in court where some of their cases made it all the way to the United States Supreme Court and impacted the civil rights movement in the south. …
Survey of Psychology Professionals on Their Involvement in Sport and Performance Psychology Services: This study examined professional practice issues in sport psychology such as qualifications, credentialing, graduate training, and the scope of practice in order to address questions about who should be teaching and providing such services. We used frequencies, t-tests, and chi-square analyses to assess trends among licensed psychologists in the subdiscipline of sport psychology. Analyses show that 26.7% (n = 52) reported providing services to individual athletes and 17.9% (n = 35) to teams in which their work focused on directly improving sport performances. Additionally, 58.5% (n = 114) reported providing mental health services to individual athletes and 10.3% (n = 20) to sport teams. These results suggest services provided to individual athletes and groups/teams of athletes seem to emphasize mental health concerns. Regarding supervision, 18.5% (n = 36) indicated they had received supervision related to improving athletes' sport performance and 35.9% (n = 70) for mental health services they had provided. Another 17.5% (n = 34) indicated having provided supervision to other professionals who were working with athletes to improve their sport performance and 40.0% (n = 78) for those who were addressing athletes' mental health. Overall, 26 (13.3%) of the psychologists had published articles concerning sport and performance psychology in scientific journals; men (25.4%) were more likely than women (7.8%) to have done so, X 2 (1) = 11.26, p = .001. Issues related to training, professional involvement, and ethics in this growing field are discussed. Future directions for this research are also explored.
Teaching Children How to Stay Still Using Movies to Provide Continuous Feedback: External beam radiation therapy is often used as a form of treatment for individuals diagnosed with cancer. However, because staying completely still can often be difficult for children, sedation is often used daily to remedy the need for stillness. In this document, we introduce the development, implementation, and testing of a technology designed to teach healthy children to self-monitor and control their movements. This technology monitored a child's body movement and created a continuous feedback loop, playing a preferred movie based on the amount of body movement observed. Study 1 compares the amount of body movement observed when children were instructed to remain still (instructions alone) to access to a movie contingent on maintained low rates of movement (contingent movie). Study 2 compares the amount of body movement observed in the instructions alone condition with two other conditions: non-contingent access to a movie (non-contingent movie) and contingent movie. Study 3 compares the amount of body movement observed in the instructions alone condition to the contingent movie condition over an extended period of time. Lastly, Study 4 compares the amount of body movement observed when children have previously been taught to stay still using the technology described above across various days throughout various conditions. Generally, we found three things: a) instructions alone were insufficient to produce the level of control over motion required; b) some control over motion was established in the non-contingent movie condition relative to the instructions alone condition; and c) the combination of movies and feedback contingent on movement was necessary to gain the level of control over body motion necessary to adhere to the medical protocol.
Training Behavior Professionals to Use the Interview-Informed Synthesized Contingency Analysis (IISCA): Extension: The current investigation replicated and extended previous research on training of behavior professionals to implement functional assessment and analysis procedures. Specifically, the study extended procedures described by Metras to train board certified behavior analysts (BCBAs) to administer two components of the Interview Informed Synthesized Contingency Analyses (IISCA) by: (1) conducting the study in the context of a large residential/training facility for adults with ID, (2) including a participant who served as a behavior analyst for a caseload of individuals who lived and received services at the facility, and (3) adjusting the vignettes and interview scripts to reflect the change in context. This current study shows that, following a brief training sequence, the participant was able to accurately administer the open-ended interview and construct a synthesized test and control condition.
Transient Expression of BABY BOOM, WUSCHEL, and SHOOT MERISTEMLESS from Virus-Based Vectors in Cotton Explants: Can We Accelerate Somatic Embryogenesis to Improve Transformation Efficiency?: Upland cotton (Gossypium hirsutum L.) is the world's most prominent fiber crop. Cotton transformation is labor intensive and time consuming, taking 12 to 18 months for rooted T0 plants. One rate limiting step is the necessary production of somatic embryos. In other recalcitrant species, ectopic expression of three genes were shown to promote somatic embryogenesis: WUSCHEL (WUS), SHOOT MERISTEMLESS (STM), and BABY BOOM (BBM). WUS is responsible for maintaining stem-cell fate in shoot and floral meristems. STM is needed to establish and maintain shoot meristems. STM and WUS have similar functions but work in different pathways; overexpression of both together converts somatic cells to meristematic and embryogenic fate. BBM encodes an AP2/ERF transcription factor that is expressed during embryogenesis and ectopic expression of BBM reprograms vegetative tissues to embryonic growth. In prior studies, these genes were constitutively expressed, and cultures did not progress beyond embryogenesis because the embryogenic signal was not turned off. In our study, we set out to use these genes to increase the efficiency of cotton transformation and decrease the time it takes to regenerate a plant. A disarmed cotton leaf crumple virus (dCLCrV) vector delivers WUS, STM, or BBM into cotton tissue cultures through Agrobacterium tumefaciens infection. We propose that virus delivery of embryo-inducing genes is a better approach for transformation because A) inserts more than 800 nucleotides are unstable, and will spontaneously inactivate, B) virus DNA can migrate through plasmodesmata to cells around the infected cell, creating a gradient of embryonic potential, C) the virus DNA does not pass through the germ line and the seed will not contain virus. We propose this method of inducing embryogenesis will facilitate the stable transformation of cotton and will be beneficial to the cotton industry. Ectopic expression of AtBBM, AtSTM, and AtWUS GrWUS:meGFP from a constitutive CaMV 35S …
Twenty-First Century Local Food Farmers in North Texas: An Evaluation of Farming Methods, Best Practices, and Common Struggles: Research with local farmers and local food consumers in the North Texas area which captures a contemporary understanding of the challenges and successes present in North Texas local farm-and-food networks. Through ethnographic research methods, including participant-observation and semi-structured interviews, the network of producers and consumers around several farmers' markets were evaluated to understand where the strengths of local food lie, and where networks need development to promote a more stable local food environment. Texas is newer to the trend of farmers' market development, with the local food system developed to foster community, educate, and promote the advantages of locally sourced goods. This research led to the academic discovery of climate adaptive ecological knowledge and farm commodification strategies; which are tools that farmers may use to build greater defense against threats to a farm's livelihood.
La vía del abandono en los cuentos de Amparo Dávila: Amparo Davila's writing style is characterized by circumventing the boundaries between the real and the fantastic and between the known and the unknown. The author creates a narrative that evokes horror in the reader by mixing the uncanny of the unknown with the reality of the world. This study proposes that the sinister in Davila's stories are created by abandonment. This abandonment is the peremptory element of Davilian narrative and can be seen and examined throughout the author's literary work. The abandonment wields a mechanism of loneliness, madness, hopelessness and chaos that eventually provokes the sinister. The element of abandonment disturbs the main character of the story and makes him fall into an abyss from which he or she cannot escape. This abandonment is not always obvious, since most of the time the abandonment is veil by a halo of gothic and fantastic elements. The present thesis has the task of breaking down the different types of abandonment that are presented throughout this narrative, its sinister function and the theoretical and historical interpretation of the various abandonments both personal and collective that Amparo Davila presents. The route of abandonment proposed in this thesis is explained in the following three stories: "El desayuno" (1961), "La quinta de las celosías" (1959) and "La señorita Julia" (1959).
Women in the Foreign Service: A Case Study of Margaret Parx Hays, 1942-1964: This project seeks to include the historical significance of women in the Foreign Service and subsequently the United States Department of State between 1942 and 1964. Using the life and experience of Margaret Parx Hays, one of fewer than three hundred female foreign service officers before 1960, this study explores the importance of examining women at the "ground level." This narrative examines the life of Hays at several different duty stations and her experience navigating a male-dominant workplace congruent to the political and diplomatic missions of each stations. Hays was stationed in Buenos Aires, Argentina (1942-1945); Bogota, Columbia (1945-1947); Rio de Janeiro, Brazil (1948-1950); Washington D.C., U.S. (1951-1954; 1959-1962); Manila, Philippines (1954-1956); Mexico City, Mexico (1956-1958); and Hong Kong, China (1962-1964). Throughout the deployment at each station, Hays was confronted with major political events in her duty station's history or in the intersection of American foreign and domestic policy. Through the use of Hays's archived collection of personal papers, including letters and newspapers, this thesis presents a more representative story about women and about the Department of State as a larger whole than previous scholarship that has ignored how gender affected diplomatic history.
489 Days: 489 Days is an animated documentary about the harrowing experiences of Egyptian-American Mohamed Soltan, who survived 16 months of hunger strike in an Egyptian prison. Caught up in the political turmoil which followed the Arab Spring uprisings, Soltan was unjustly incarcerated between August 2013 and May 2015, when the United States government intervened to release him weeks after an Egyptian court sentenced him to life in prison. The film is also the larger story of an estimated 60,000 political detainees currently held in Egypt without due process, and in violation of local and international human rights conventions.
A Behavioral Analysis of the Stroop Effect: Participants demonstrate the Stroop effect when, in naming the color in which a word appears, reaction times are longer when the color and word are incongruent (e.g., "yellow" printed in blue) compared to when they are congruent (e.g., "yellow" printed in yellow). The literature commonly refers to the difference in reaction times as a measure of the interference of word stimuli upon color stimuli, and is taken as support for the theory of automaticity. This study asks whether the Stroop effect can be analyzed as interactions within and across stimulus classes. Adult participants learned three 3-member classes (color, word, and pattern) in a serialized order of training. In the testing phase, participants were presented with compound stimuli formed from combinations of members within and across classes (e.g., word and color), and reaction times were recorded in similar fashion to the Stroop task. Results show that averaged participants' reaction times are faster to compound stimuli comprised of members within the same class, compared to compound stimuli formed with members from different classes. These group-level data are consistent with the Stroop literature in that congruent compounds produce faster reaction times relative to incongruent compounds. However, individual participant data do not consistently reflect the Stroop effect. Further considerations for future research in this area are discussed.
Bright Mosaic: Bright Mosaic is a 30-minute documentary about a comprehensive autism center for children with an organic and unconventional approach. The Bright Mosaic Autism Therapy Center's exceptional curriculum consists of a mix of Montessori practices, natural sciences, applied behavior analysis, occupational therapy, speech therapy, physical therapy, play therapy, music therapy, sensory integration, daily life skills and art. Bright Mosaic mixes observational and participatory styles in an effort to portray an exceptionally skilled and passionate team who fights a tough daily battle to prepare their children for the life ahead of them.
BSM Message and Video Streaming Quality Comparative Analysis Using Wave Short Message Protocol (WSMP): Vehicular ad-hoc networks (VANETs) are used for vehicle-to-vehicle (V2V) and vehicle-to-infrastructure (V2I) communications. The IEEE 802.11p/WAVE (Wireless Access in Vehicular Environment) and with WAVE Short Messaging Protocol (WSMP) has been proposed as the standard protocol for designing applications for VANETs. This communication protocol must be thoroughly tested before reliable and efficient applications can be built using its protocols. In this paper, we perform on-road experiments in a variety of scenarios to evaluate the performance of the standard. We use commercial VANET devices with 802.11p/WAVE compliant chipsets for both BSM (basic safety messages) as well as video streaming applications using WSMP as a communication protocol. We show that while the standard performs well for BSM application in lightly loaded conditions, the performance becomes inferior when traffic and other performance metric increases. Furthermore, we also show that the standard is not suitable for video streaming due to the bursty nature of traffic and the bandwidth throttling, which is a major shortcoming for V2X applications.
Charpy Impact Testing of Twinning Induced Plasticity and Transformation Induced Plasticity High Entropy Alloys: High entropy alloys (HEAs) are a new class of solid solution alloys that contain multiple principal elements and possess excellent mechanical properties, from corrosion resistance to fatigue and wear resistance. Even more recently, twinning induced plasticity (TWIP) and transformation induced plasticity (TRIP) non-equiatomic high entropy alloys have been engineered, promising increased strength and ductility as compared to their equiatomic counterparts. However, impact and fracture resistance of these HEAs has not been studied as much as their other mechanical properties. In this thesis, the hardness, tensile properties, and Charpy impact energy of Al0.3CoCrFeNi, a TWIP HEA, and 50Fe-30Mn-10Co-10Cr (at.%), a TRIP HEA, was explored. First, three processing conditions, (1) as-received, (2) recrystallized, and (3) peak hardness, were chosen for each alloy and verified with Vickers microhardness measurements. Next, the tensile properties of each alloy and condition were investigated. Charpy impact specimen size was then selected based on the final plate thickness, and the machined samples were tested. Plastic zone size and change in sample thickness in the deformed region of each condition after testing was measured. Post-impact test inspection of the samples in all conditions showed that the samples were in tension near the V-notch root and in compression at the impact surface. Plastic zone size is seen to change as a function of distance from the V-notch root moving towards the impact surface in conditions that exhibited higher ductility. Overall, the TWIP alloy displayed high fracture resistance, and further microstructural optimization will likely increase the fracture resistance of these alloys.
Comparing Cognitive Functioning in White Mexican/Mexican Americans and non-Hispanic White Americans with and without Type 2 Diabetes: To better understand the impact of type 2 diabetes, the relationship between ethnicity, specifically Mexican/Mexican American ethnicity, and the disease must be further investigated. This study specifically examined the cognitive impact of type 2 diabetes. Data from the 2014 Health and Retirement Study was used to compare the cognitive functioning of non-Hispanic White (n = 10,658) and White Mexican/Mexican American (n = 847) individuals, age 50+ years, with and without type 2 diabetes. Serial 7's and immediate and delayed recall—hypothesized to be more negatively affected by type 2 diabetes and Mexican American status—was compared controlling for age, education, and depression. A multivariate analysis of covariance (MANCOVA) indicated significant main effects for race/ethnicity (F(3,11496) = 11.15, p < .001) and diabetes status (F(3,11496) = 3.15, p < .024), with Mexican Americans and those with diabetes having worse cognitive performance. There were significant effects for all covariates. A step-wise multiple regression indicated that education, age, depression, race/ethnicity and diabetes status accounted for a combined 28.4% of variance in a cognitive performance composite. Implications for assessment and treatment are discussed.
Continuous Harmonic Structure in J.S. Bach's Triple Fugues in The Well-Tempered Clavier and Art of Fugue: This thesis explores how the harmonic structures of J.S. Bach's triple fugues interact with their formal, contrapuntal designs. It attempts to explain how each of these elaborate fugues is supported by a single, uninterrupted structure that holds the entire work together. In Bach's fugues one generally encounters large-scale goal-directed motion towards the concluding tonic; this continuous harmonic motion towards the final tonic is consistent with the aesthetics of the Baroque style, which valorizes constant motion or dynamism.
Critical Essay and Musical Score Accompanying the Original Music Composition, "East is East, and West is West (and Never the Twain Shall Meet)": This document accompanies and explains the concepts used in the development of the composition, East is East, and West is West, (and Never the Twain Shall Meet). The process for generation and development of much of the musical content of the composition East is East, and West is West, (and Never the Twain Shall Meet) is the use of quoted musical materials. The second process, but equally as important, for development of the composition relies heavily on the idea of parallel development of modular ensembles and how the interactions created between them by sharing instrumentation can be a tool for development, as well as a challenge to the development of each module. Each module has an influence on at least one other module and is also influenced by at least one other module, creating a puzzle of interactions that must be navigated carefully when generating each individually. Both quotation and modularity are concepts employed by other composers, so this document also briefly explains how other composers have approached these concepts in their works in order to establish a historical relationship within the canon of western classical music to East is East, and West is West, (and Never the Twain Shall Meet).
The Crutch of Ritual: Social Control in the Modern American Capital Punishment System: Contemporary American capital punishment contains many processual elements, such as the prisoner's last meal and the cleansing of his body immediately before death, that serve no concrete, practical purpose but share a nature with ritual practices. In this project, I utilize a hermeneutic phenomenological lens to identify and list these ritual elements. I also use concepts drawn from the structural functionalist tradition to both analyze the specific purposes the elements serve within individual parts of the death penalty and to discuss the overarching result of the inclusion of these elements within the process as a whole. Ultimately, I find that the ritual elements present in the capital punishment process serve a social control purpose, insulating and reinforcing the death penalty as a whole. Ritual works to do this by controlling the behavior and image of the prisoner and emotionally soothing both participants of the process and the public at large.

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