bluuebunny/crossref_metadata_2025 huggingface dataset:
Defining Components Linked to Bacterial Nutritional Utilization of Cyanide as a Sole Nitrogen Source
Authors:   , Jones Lauren Brittany
Published: February 2025

One of the challenges in biology is placing a function on the myriad of gene sequences having become available from rapid advances in genome sequencing. One such example is a gene cluster (Nit1C) found in bacteria that is tied to the unusual ability of certain bacteria to grow when supplied cyanide as the sole nitrogen source. The term cyanotrophs has been applied to such bacteria, for which a genetic linkage between cyanotrophy and Nit1C was demonstrated for 10 separate bacteria. In addition to growth, cyanide induced the expression of Nit1C genes in all organisms tested, and in one case, deletion of one of the Nit1C genes (nitC) caused a loss of growth. Of the ten bacteria able to grow cyanotrophically, all gave evidence of harboring Nit1C on their genome except for two (Pseudomonas fluorescens Pf11764 and P. monteilii BCN3), which were sequenced and the presence of Nit1C was also confirmed. A broader search of bacteria identified 270 separate strains with the cluster, all limited to bacteria spanning the phyla Firmicutes, Actinobacteria, Proteobacteria and Cyanobacteria. Remarkably, many examples of a single representative of a given taxon contained Nit1C, most poignantly displayed by Pf11764 and PmBCN3; the interpretation being the cluster was likely acquired by horizontal gene transfer in response to cyanide as an environmental cue. Consistent with its absence in Archaea is the time line for the emergence of cyanide producing organisms (cyanogens) on earth dating back only 400-500 million years.
"Teach Me, Toward Me": Returning the SISTAH to the SISTAH: Exploring the Use of Afrocentric Pedagogy and Andragogy for Black Women in the Higher Education Classroom
Authors:   , Hazelwood Ashley Marie
Published: February 2025

The purpose of the study was two-fold. First, the study explored how self-identified Afrocentrist professors in higher education utilized Afrocentric pedagogy and andragogy to address the learning needs of students, specifically Black women students. Second, the study explored the ways in which Black women students experienced that learning in the higher education classroom. The purpose was advanced through an in-depth analysis of Afrocentric teaching and learning in the higher education. A sample of five self-identified Afrocentric faculty members - three females and two males - and five Black women students who studied with those professors was identified. Participants were interviewed individually in-person and by telephone. Data analysis resulted in the themes of the importance of living an Afrocentric life in which the African body is centered and elevated, rejection of European dominance and universalism, re-routing history, and introducing Afrocentricity as a methodology from which to analyze human life. These themes presented core values, approaches, practices and characteristics utilized in Afrocentric teaching. Findings also showed that the Black women student participants received multiple benefits from receiving an Afrocentric education that assisted them in their journeys through higher education. Study findings provided a foundation for the guidebook "Teach Me, Toward Me Kuongoza, "a tool for educators who choose to explore the Afrocentric journey, and for those who are curious about Afrocentricity's intent. The guidebook may be utilized by higher education institutions with a commitment to the academic lives of their Black students as well as those of diverse cultural backgrounds.
The Victim-Offender Overlap in Intimate Partner Violence: Considering the Role of Self-Control
Authors:   , Spivey Emily
Published: February 2025

While a growing body of literature in the field of criminal justice documents the relationship between victimization and offending, only recently has this knowledge been applied to the study of intimate partner violence (IPV). Accordingly, questions remain with regard to the theoretical origins of mutual violence between intimates. In an effort to fill this void in the literature, the current study examines the etiology of moderate forms of mutual IPV, specifically assessing self-control theory's applicability to the victim-offender overlap in IPV. Data were obtained from Waves I and IV of the National Longitudinal Study of Adolescent to Adult Health (Add Health) to investigate whether low self-control at Wave I predicts IPV victimization, IPV offending, or both IPV victimization and offending at Wave IV. The present study extends prior literature examining the role of self-control in IPV by (1) investigating the influence of self-control on the victim-offender overlap in IPV, (2) using longitudinal data, and (3) utilizing a sample of U.S. adults ages 24 to 33. While low self-control was found to significantly predict IPV offending and the overlap in IPV victimization and offending, low self-control failed to significantly predict IPV victimization. Policy implications, study limitations, and directions for future research are discussed.
Perseverance in the Face of Totalitarianism: The Life and Legacy of Józef Zygmunt Szulc in Nazi Occupied France
Authors:   , Mamola Bethany Grace
Published: February 2025

The Reichsleiter Rosenberg Task Force of 1940, initiated a systematic confiscation of items belonging to Jews throughout Europe. Because of this task force and Hitler's decrees, Jews across Europe were labeled as stateless, and were stripped of ownership and rights to property. Not only did these actions devastate Jews economically, but intellectually and artistically as well. In parts of occupied France, this task force was legitimized by Vichy laws under the label of the Commissariat Générale aux Questions Juives (General Commission for Jewish Issues) and enabled Nazi officials to closely watch Jewish musicians and stop them from performing their music, profiting from anyone else performing it, and to halt any public performance of Jewish compositions. This dissertation exhibits the lost legacy of one such Jewish musician, Józef Szulc. It discusses him as a musician of great importance in the ongoing recovery of Jewish culture, music, and life during World War II. His musical output has historical notoriety, as seen through reviews and performance history. The study of Vichy laws and their effect on Jewish musicians in Paris during the Nazi occupation provides the socio-political context for Szulc's life. It also provides the most plausible reason why his contribution to French vocal music was almost entirely lost. Szulc's success with his operetta compositions created a trajectory of performances that lasted well into the late 1920s and early 1930s.
Process-Structure-Property Relationships in Friction Stir Welded Precipitation Strengthened Aluminum Alloys
Authors:   , Mondal Barnali
Published: February 2025

Through a series of carefully designed experiments, characterization and some modeling tools, this work is aimed at studying the role of thermal profiles on different microstructural zones and associated properties like strength and corrosion through a variation of weld parameters, thermal boundary conditions and material temper. Two different alloys belonging to the Al-Cu and Al-Cu-Li system in different temper conditions- peak aged (T8) and annealed (O) were used. A 3D-thermal pseudo mechanical (TPM) model is developed for the FSW process using heat transfer module in COMSOL Multiphysics and is based on a heat source wherein the temperature dependent yield shear stress is used for the heat generation. The precipitation and coarsening model is based on the Kampmann and Wagner theoretical framework and accounts for the competition between the various nucleation sites for both metastable and equilibrium precipitates. The model predicts different precipitate mean radius and volume fraction for the various zones in the friction stir welded material. A model for the yield strength is developed which considers contributions from different strengthening mechanisms. The predictions of the each models have been verified against experimental data and literature. At constant advance per rotation, the peak temperature decreases with a decrease in traverse speed and increases with an increase in tool rotation. Weld properties were significantly affected by choice of thermal boundary conditions in terms of backing plate diffusivity. Weld conditions with a higher peak temperature and high strain rate results in more dissolution of precipitates and fragmentation of constituent particles resulting in a better corrosion behavior for the weld nugget. For a peak aged temper of 2XXX alloys, the weld nugget experiences dissolution of strengthening precipitates resulting in a lower strength and the Heat affected zone (HAZ) experiences coarsening of precipitates. For an annealed material, both the weld nugget and HAZ experiences dissolution of precipitates with an increase in strength in the weld nugget.
Students' Attitudes toward Educational Gamification in Online Learning Environments
Authors:   , Abu Dawood Sumayah Mohammadlutfi
Published: February 2025

This study explored undergraduate and graduate students' attitudes toward the pleasurability of educational gamification in online learning environments. The study is a sequential explanatory mixed-methods research that investigated students' attitudes quantitatively, then qualitatively. In the quantitative phase, an online survey, the Pleasurable Learning Experiences scale (PLLEXs), was administrated at one of the largest public southwestern universities in the U.S. (N = 119). The qualitative phase involved conducting eight semi-structured interviews with selected participants. The PLLEXs uses a 4-point Likert scale that encompasses 4 subscales: (a) Preferences for Instructions, (b) Preferences for Instructors' Teaching Styles, (c) Preferences for Activities, and (d) Preferences for Learning Effectiveness. A series of analyses of variances (ANOVAs) were used to identify predictors of students' overall attitudes toward educational gamification. The main findings were: (a) students had strong preferences toward educational gamification with Preferences of Instructions rated the highest subscale and Preferences for Activities rated the lowest subscale, (b) major was a statistically significant predictor of students' attitudes toward educational gamification, (c) international students had statistically significant lower preferences toward educational gamification compared with U.S. domestic students, (c) online learning experiences measured by the number of previous online courses and the number of hours spent weekly on computers for academic-related work were statistically significant predictors of students' attitudes toward educational gamification, (d) instructor's feedback was the most important aspect and online collaboration was the most challenging aspect in online learning environments, and (e) the use of multimedia in LMSs can support or hinder teaching and learning activities.
The Food-Drug Relationship in Health and Medicine
Authors:   , Tuminello Joseph Anthony
Published: February 2025

In this dissertation, I apply Gadamerian philosophical hermeneutics to examine interpretations of the food-drug relationship within the contexts of health and medicine. Assumptions regarding the relationship between these categories undergird a substantial academic discourse and function as key components in worldviews beyond the academy. Despite this, little work has been done in foregrounding them to allow for critique and consideration of alternative perspectives. Unearthing philosophical assumptions within various fields, epistemic systems, and regulatory bodies, I classify food-drug interpretations into two main categories: dichotomous interpretations of the categories of "food" and "drugs" as ontologically distinct, and continuum-based interpretations where these categories overlap. Rather than arguing for a single appropriate way of understanding the food-drug relationship, my project aims to disclose the complexities of both sets of interpretations, illustrating their virtues and vices, and underscoring the need for people to call their own interpretations into question while taking seriously those of others. The dialogical structure of philosophical hermeneutics provides a useful foundation for dialogue within and between dichotomous and continuum-based interpretations. We do not have unmediated access to a mind-independent reality, the terms "food" and "drugs" do not necessarily refer to natural kinds, and all interpretations likely have different degrees of strengths and blind spots. Food-drug interpretations are bound up with larger worldviews, holistic systems that generate meaning for their adherents. Granting this, conversation partners can seek to gain a clearer picture of differing interpretations, what they can learn from these interpretations, and how they can interrogate their own interpretive modes.
Proximal Policy Optimization in StarCraft
Authors:   , Liu Yuefan
Published: February 2025

Deep reinforcement learning is an area of research that has blossomed tremendously in recent years and has shown remarkable potential in computer games. Real-time strategy game has become an important field of artificial intelligence in game for several years. This paper is about to introduce a kind of algorithm that used to train agents to fight against computer bots. Not only because games are excellent tools to test deep reinforcement learning algorithms for their valuable insight into how well an algorithm can perform in isolated environments without the real-life consequences, but also real-time strategy games are a very complex genre that challenges artificial intelligence agents in both short-term or long-term planning. In this paper, we introduce some history of deep learning and reinforcement learning. Then we combine them with StarCraft. PPO is the algorithm which have some of the benefits of trust region policy optimization (TRPO), but it is much simpler to implement, more general for environment, and have better sample complexity. The StarCraft environment: Blood War Application Programming Interface (BWAPI) is open source to test. The results show that PPO can work well in BWAPI and train units to defeat the opponents. The algorithm presented in the thesis is corroborated by experiments.
The Semantics of the Motives and Linear Voice Leading in the First and Second Movements of Korngold's Violin Concerto, Op. 35
Authors:   , Hong Dayeon
Published: February 2025

This dissertation aims to examine the motivic voice leading of the first two movements of Korngold's Violin Concerto, Op. 35 to illuminate the interwoven motives within the underlying structures of the movements. The analysis principally concentrates on two main motives: the motivic tritone and rising-third motives. Moreover, the analysis of Korngold's motivic writing further investigates the semantics that are evoked by the technical aspects. With his exceptional ability to interconnect music to narratives both in operas and films, Korngold never ceased to express the recurring themes of love and revival also in his instrumental music. It is noteworthy that he borrowed only the "love themes" from his film scores for the first two movements of the violin concerto. The violin concerto was the first work written after Korngold returned to absolute music after a decade of composing for films to ensure his and his family's survival during the war. After the Anschluss, during his exile in California as a Jewish refugee, Korngold's love for his homeland Austria, his philanthropic concern for humanity, and longing for peace became his primary focus; these concerns are reflected in his Violin Concerto through his use of specific motives. By researching the historical and biographical materials, as well as employing linear analysis, this study seeks to explore the meanings of the linear motives in Korngold's music; more specifically, it attempts to show how particular motivic figures and tonal structures express the composer's ideas of transcendental "love." It argues that an in-depth understanding of both the technical and semantic aspects is also the first and foremost requirement for performing this piece.
The Invisible Woman: A Study of Black Women in Magazine Beauty Advertisements
Authors:   , Arterbery Andrea
Published: February 2025

This thesis study takes a mixed methods and black feminist approach to find out how black women are represented within the beauty advertisements of women's fashion magazines.
The Historical and Pedagogical Significance of Excerpts by André-Ernest-Modeste Grétry (1741-1813)
Authors:   , Youngs Jennifer
Published: February 2025

This collection of 9 vocal works, taken from the oœuvre of André-Ernest-Modeste Grétry (1741-1813), was chosen for their utility in teaching undergrad voice majors. This collection offers a group of songs that are attractive in their simplicity allowing the time in their lessons to be devoted to the instruction of French pronunciation. Grétry's attention to detail in the setting of French prosody provides undergraduate singers with a collection of songs that offer an immediate understanding as to the nuances of the French language. With funding from an I-GRO grant through the University of North Texas, research was conducted in the archives of the Bibliothèque nationale de France, and work continued in the Grétry Museum in Liège, Belgium. The primary sources found within these locations formulated valuable insights into to the life and influence of Grétry, and provided first-hand experience with research techniques within foreign libraries. This research has solidified the relationship between Grétry's compositional style and its usefulness within the undergraduate voice studio.
Universal Pre-K as a Vehicle for Reversing the Impact of Historic Racial Segregation in the United States
Authors:   , Bartley Sarah
Published: February 2025

Not all children begin their educational journey on equal footing. The purpose of this study is to investigate how universal prekindergarten (UPK) can serve as a key to remedying issues surrounding educational inequity. In order to understand educational inequity, I dive into the history of neighborhood racial segregation in the United States, and how it led to our currently unjust system. Racial segregation, specifically city zoning laws, created racially separate neighborhoods that are still relatively homogenous to this day. In order to ascertain how UPK could combat these issues stemming from historic racial segregation, I evaluate programs in three states to highlight the approach to UPK that each has implemented: New York, Georgia, and Oklahoma. Program features in Oklahoma have produced high-quality standards and the program has reached a larger percentage of 4-year-olds. I discuss multiple dimensions of proposed education reform, particularly for students of color, including the culturally-situated nature of high-stakes testing and its inability to fully capture student and school progress. I propose a culturally empowering approach to UPK, situated within the Dallas community, as a solution to current educational inequity.
On Preserving Games and Perseverance for the Future: A Developer Perspective
Authors:   , Gonzalez Stephen
Published: February 2025

Using ethnographic research methods, I worked with the International Game Developers Association (IGDA) to conduct an exploratory study about developer perspectives on video game preservation. I conducted in-depth interviews with independent developers in the Dallas-Fort Worth region, a hub for Texas game development. These interviews explored developers' knowledge and awareness of game preservation as a topic of concern, archival culture and practices in the industry, and the IGDA's potential role in addressing issues related to preservation work. This research contributes to a growing body of literature on game preservation, urgently needed as many gaming technologies face obsolescence in the near future. I use Ellen Cushman's concept of "perseverance" to examine the difference between simply preserving video games for the future, and the perseverance of game development as a professional trade and artistic craft.
Networking of UAVs Using 802.11s
Authors:   , Polumuru Pushpa
Published: February 2025

The thesis simulates the problem of network connectivity that occurs due to the dynamic nature of a network during flight. Nine nodes are provided with initial positions and are flown based on the path provided by leader-follower control algorithm using the server-client model. The application layer provides a point to point connection between the server and client and by using socket programming in the transport layer, a server and clients are established. Each node performs a neighbor discovery to discover its neighbors in the data link layer and physical layer performs the CSMA/CA using RTS/CTS. Finally, multi hop routing is achieved in network layer. Each client connects with server at dedicated interval to share each other location and then moves to next location. This process is continued over a period of several iterations until the relative distance is achieved. The constraints and limitations of the technology are network connectivity is lack of flexibility for random location of nodes, links established with a distant node having single neighbor is unstable. Performance of a system decreases with increase in number of nodes.
The Effect of Processing Conditions on the Surface Morphology of Few-Layered WS2 Thin Films
Authors:   , Cai Bimin
Published: February 2025

Recent progress in layered transition metal dichalcogenides (TMDs) has led to various promising electronic and optoelectronic applications. However, the structure of materials plays a critical role in electronic and optoelectronic devices, and determines performance. Electronic and optoelectronic devices typically consist of multiple layers that form electrical homojunctions or heterojunctions. Therefore, in a device it can be expected that a WS2 layer may serve as the substrate for a subsequent layer in a multilayer device stack and determine how the layer grows. In transistor structures, roughness at the channel/gate dielectric interface introduces field variations and charge scattering. Therefore, understanding the relations between processing, surface morphology and properties is important. In this project, the effects of pulsed laser deposition (PLD) processing conditions on the surface morphology of few layered WS2 films were studied. WS2 films were synthesized under processing conditions that represent the extremes of surface supersaturation and kinetic energy transfer from the flux to the growing films, and evolution of the surface morphology was studied. The specific conditions were 1Hz/50mJ, 10Hz/50mJ, 1Hz/300mJ, and 10Hz/300mJ respectively. Combining AFM, XRD and Raman analyses, it was determined that deposition at 10Hz/300mJ, provided the best structural properties and surface morphology. Growth appeared to be 3D-cluster, and was governed by supersaturation rather than by surface diffusion processes. No clear correlation between mobility and surface roughness was found. Hall measurements and XPS data show the highest mobility was obtained with the highest S/W ratio, indicating that point defect scattering rather than scattering from surface roughness was dominant.
Isolation and Bioinformatic Characterization of Four Novel Bacteriophages from Streptomyces toxytricini
Authors:   , Alzaid Hessah
Published: February 2025

Six initial phage isolates with high titer lysates were obtained using Streptomyces toxytricini B-5426 as the host bacterium. These isolates were named Goby, Toma, Yosif, Yara, Deema, and Hsoos. However, upon completion of the sequencing, it was found that the Yara and Hsoos isolates were identical, as were Goby and Deema. As a result, final analysis was completed on only the four unique isolates. All of the phages mentioned above were isolated from soil samples from different locations. Also, they had different sizes of plaques, ranging from 0.3 – 0.9mm. Yosif had the largest plaque size. Yara's head diameter was 79nm with tail diameter of 94nm.
Transhumanism: An Ontology of the World's Most Dangerous Idea
Authors:   , Ross Benjamin David
Published: February 2025

Transhumanism is the name given to the cultural and philosophical movement which advocates radical human technological enhancement. In what follows, I use perspectives drawn from existential philosophy to problematize transhumanists' desire to recast human finitude as a series of technical problems with technical solutions. The ontological account of transhumanism offered here questions the assumed benefit and inevitability across six chapters. Following an introductory chapter, Chapter 2 introduces the key players, and present the philosophy of transhumanism and the opposing view of bioconservativism. Chapter 3 offers a narrative of transhumanism beginning with its mythical antecedents, and proceeds to describe the emergence of contemporary transhumanist institutions. Chapter 4 focuses on the challenge that transhumanists Aubrey de Grey and Ray Kurzweil present to mortality. The chapter asks whether human immortality is a coherent idea, and consider the consequences of achieving a data-driven amortality. Chapter 5 continues the analysis of transhumanism as it challenges limits to knowledge (ignorance), and limits to well-being (suffering). Ray Kurzweil is presented as a key figure of transhumanist thought, along with David Pearce, who desires to eradicate suffering through genetic engineering. The hubris of transhumanism is viewed through the lens of Friedrich Nietzsche in chapter 6. Nietzsche's critique of the "last human" is interpreted in terms of transhumanist thought, and a role for the philosopher in the context of transhumanism is presented. Finally, chapter 7 offers Buddhism as an alternative response to suffering. This chapter profiles "Buddhist Transhumanists," and consider what connection transhumanism has with Buddhism's philosophy of impermanence.
The Civilian Conservation Corps in Big Bend National Park
Authors:   , Jackson Kimberly
Published: February 2025

During the New Deal, the Civilian Conservation Corps (CCC) put young men to work in state and national parks across the United States. One of such parks, Big Bend National Park, is the focus of this study. The CCC had two camps within the park, one from 1934 to 1937 and another from 1940 to 1942. During their time in Big Bend, the CCC constructed many projects including a road, trails, cabins, and other various structures. The purpose of this study is to delineate the role of the CCC in creating Big Bend National Park and the experience of the CCC during their time in the Big Bend camp. This study determines the role of the CCC through a discussion of the planning done by the CCC for Big Bend National Park and the work completed by the CCC in the park. In doing so, it argues that the CCC played a substantial and significant role in the development and character of the park. This study works to understand the experience of the CCC in Big Bend through a discussion of education, safety, and an investigation of a commanding officer. Through this discussion, the role of the federal government and national organization in the local camps can be seen, as can the value they placed in the enrollees.
Spectral, Electrochemical, and Solar Cell Studies of Peripheral Modified Carboxy Zinc Porphyrins
Authors:   , Alsaleh Ajyal Zaki
Published: February 2025

Six peripherally meso-modified Zn (II) porphyrin sensitizer dyes are designed and their J-V performance in dye sensitized solar cell (DSSC) evaluated. Electron-donating groups including phenothiazine, carbazole and pyrene are used to modify the porphyrin macrocycle at the meso-carbon position(s). To compare the effect of donor substitution on the performance of the cells in terms of short circuit current (Jsc), light harvesting efficiency (LHE) and power conversion efficiency (η), two sets of sensitizers with different degrees of substitution are synthesized. One set of dyes (mono-substituted) have one electron donor at trans-position to the acceptor, while the second set (tri-substituted) dyes have three of the same type electron donor groups at 5, 10 and 15 meso-carbon positions making all the six dyes push-pull type sensitizers incorporating 4'-carboxyphenyl as an electron-acceptor/anchor group. Different spectroscopic and electrochemical methods are used to study the photophysical and electrochemical properties of the dyes, while the photovoltaic performance of their cells under 1.5 A.M is studied using solar simulator. Meso-substitution of Zinc (II) porphyrin with these small donor molecules is shown to improve the light harvesting character of the Zinc (II) porphyrin macrocycle in the UV-Vis absorption while at same time improving its fluorescence quantum yield, excited-state life time and electron donating potential. All these factors combined make these meso-modified dyes better sensitizers with suitable Δ0 Δ0, and much improved power conversion efficiencies (PCE) compared to unsubstituted Zn (II) porphyrin. In particular, as a result of the peripheral modification, a doubling in efficiency in the mono- substituted series (RA-200-Zn; η=^M 4.2%, Jsc= -13.13 mA cm-2, Voc=0.54 ) and tripling in the tri-substituted series ( tri-phenothiazine Zn (II) Porphyrin; η= 7.3%, Jsc= -18.15 mA cm-2, Voc= 0.55 ) compared to unsubstituted Zn (II) porphyrin (η= 2.11%, Jsc= -5.7 mA cm-2, Voc= 0.53 V) has been accomplished.
Preparing and Using Hydrophobic Fluorinated Polymers for Corrosion Protection on Aluminum Substrate
Authors:   , Yaseen Waleed Khaleel
Published: February 2025

Corrosion is one of the most expensive failures in industries that used metal components and other construction materials. In fact, corrosion is responsible for hundreds of billions-dollar loss in the US alone each year. In general, corrosion occurs when metal surfaces are exposed to water, oxygen, acids, bases, or salts. Therefore, metal substrates must be protected by using materials that act as barriers to avoid destructive corrosion attack. Aluminum is one of the most common metals used in the industry; and it is used in many places such as refining and petroleum production equipment, pipelines, and fossil fuel power plants. Aluminum is known to have corrosion resistance due to the forming of an oxide layer that can be reformed rapidly if the surface gets damaged. However, in the long-term the oxide layer cannot protect the aluminum surface from corrosion because it is stable only in neutral mediums and it is soluble in acidic and basic environments. Barrier protection is one of the most effective methods that prevent aluminum surfaces from being exposed to corrosive environments. These barriers can be organic or inorganic coatings that can limit the electron transport or the cathodic and the anodic reactions between aluminum alloys and the surrounding environment. Fluorinated polymers that were used in this study exhibit excellent properties which make them good candidates for corrosion protection applications. These properties include high hydrophobicity which is responsible for repelling oxygen and water and reducing the wettability of the metal surface, strong adhesion to the metal surface allowed for covering and protection of substrates in aggressive environments, and thermal stability that allows for using these polymers in high temperature environments. Overall, the corrosion protection, which was evaluated using electrochemical techniques, and the mechanical properties were improved with these fluorinated polymeric coatings in comparison to the bare aluminum alloys which proves to be advantageous for using these polymeric coatings in many areas including marine environments, oil and gas industries, and fossil fuel power plants.
Substrate Nanotopography and Stiffness Modulation of Cell Behavior
Authors:   , Wang Kai
Published: February 2025

The physical characteristics (i.e., nanostructure and stiffness) of the extracellular matrix where cells reside have been shown to profoundly affect numerous cellular events in vivo and also been employed to modulate cell behavior in vitro, yet how these physical cues regulate cell behavior is still elusive. Therefore, we engineered a variety of nanotopographies with different shapes and dimensions, and investigated how the nanotopographical cue, through focal adhesions-cytoskeleton-nucleus pathway, affected cell phenotype and function. We further designed and fabricated well-defined substrates which had either identical biochemical cue (adhesive ligand presentation) but different nanotopographical cues or identical nanotopography but different biochemical cues, and dissected the roles of these cues in cell modulation. In addition, we revealed that the human mesenchymal stem cells (hMSCs) could obtain nanotopographical memory from the past culture environment, and the nanotopographical memory influenced the future fate decision of the hMSCs. Moreover, we evaluated the effects of substrate nanotopographical and stiffness cues on the fibrogenesis of human lung fibroblasts in response to carbon nanotubes and highlighted the significance of these physical cues in the development of physiologically relevant in vitro models for nanotoxicological study. The mechanistic understanding of the physical regulation of cell behaviors will provide important insight into the advancement of cell culture technologies and the recreation of biomimetic in vitro tissue/organ models.
The Last Karankawas: Stories
Authors:   , Garza Kimberly Rose
Published: February 2025

A collection of interconnected short stories set in diverse corners of Texas, converging on Galveston Island before and after Hurricane Ike.
Abelian Group Actions and Hypersmooth Equivalence Relations
Authors:   , Cotton Michael R.
Published: February 2025

We show that any Borel action on a standard Borel space of a group which is topologically isomorphic to the sum of a countable abelian group with a countable sum of lines and circles induces an orbit equivalence relation which is hypersmooth. We also show that any Borel action of a second countable locally compact abelian group on a standard Borel space induces an orbit equivalence relation which is essentially hyperfinite, generalizing a result of Gao and Jackson for the countable abelian groups.
Educational Degree and Career Satisfaction: Moderating Effects of Educational Expectations
Authors:   , Knudsen Jennifer
Published: February 2025

Prior research supports the relationship between education and status attainment, mobility, and occupational attainment. Today, within an increasingly bifurcated labor market, where education is important for occupational attainment and the associated income and benefits, understanding the processes of status attainment is important. Educational expectations shape educational attainment, while educational attainment influences occupational attainment and satisfaction. Utilizing the National Longitudinal Study of Adolescent Health, this study investigated the moderating effects of expectations on the relationship between education and occupational satisfaction. The results of this study partially support the moderating effects of expectations on the relationship between degree earned and career satisfaction, finding that expectations moderate this relationship for individuals who earned a bachelor's degree.
The Suspensionists
Authors:   , Valentine Andrew Lee
Published: February 2025

A description of a documentary produced about human flesh-hook suspension. This document covers the pre-production, production, and post production of the documentary film and the research behind it.
Spatial Variations and Cultural Explanations to Obesity in Ghana
Authors:   , Asubonteng Agnes
Published: February 2025

While obesity is now recognized as a major health concern in Ghana, the major drivers, causal factors, and their spatial variation remain unclear. Nutritional changes and lack of physical activity are frequently blamed but the underlying factors, particularly cultural values and practices, remain understudied. Using hot spot analysis and spatial autocorrelation, this research investigates the spatial patterns of obesity in Ghana and the explanatory factors. We also use focus group discussions to examine the primary cultural factors underlying these patterns. The results show that wealth, high education, and urban residence are the best positive predictors of obesity, while poverty, low education, and rural residence are the best (negative) predictors of obesity. Consequently, improving the socioeconomic status, for example, through higher levels of education and urbanization may increase obesity rates. Furthermore, the cultural preference for fat body as the ideal body size drives individual aspiration for weight gain which can lead to obesity. Thus, reducing obesity rates in Ghana is impossible without addressing the underlying cultural values.
Bipolar Spectrum Traits in Day-to-Day Life: Ecological Momentary Assessment of Reward Sensitivity, Circadian Timing, and Experience of Reward in the Environment
Authors:   , Smith Patrick M.
Published: February 2025

The current study examined 236 undergraduate students in a week long twice-per-day ecological momentary assessment exploring the influence of baseline reward sensitivity and interactions between circadian variables (i.e., total sleep time, sleep quality) and daily measures of reward. Though primary study findings did not support reward sensitivity related moderation of sleep-reward pathways, a number of notable findings emerged. We found evidence of specific domains of reward sensitivity (anticipatory reward and reward responsiveness) which are uniquely related to daily experiences of reward. In addition, bidirectional circadian-reward pathways were found between sleep quality and daily rewards which suggests pathways towards reward-related engagement. Evidence also supported interactions between sleep quality and total sleep time on experience of daily reward, further highlighting the complexity of sleep-reward pathways and their relevance to mood symptoms.
Comparing Cognitive Functioning in White Mexican/Mexican Americans and non-Hispanic White Americans with and without Type 2 Diabetes
Authors:   , Saldana Samantha Lee
Published: February 2025

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.
Measurement of Positive Continuance Intention Drivers within a Service Domain
Authors:   , Harun Md Ahasan Uddin
Published: February 2025

The contribution of this dissertation is how model measurement allows examination of the balance between what is practical in terms of consumer concerns versus what is optimal in terms of cost control. Essay 1 examines a research framework that incorporates various service recovery strategies and simultaneously evaluates their comparative influences. Essay 2 evaluates the complex interrelationships among different factors related to the post-complaint behavioral process. Essay 3 fills a research gap by examining the role of brand equity by operationalizing a reflective model using PLS in operations management (OM) research. These three essays provide insight into the quality management domain and the value that is achieved via a data driven examination of theory. Moreover, this research will provide operations management practitioners a basis to carry out future research on quality management phenomena as well as insight into how to balance cost control and service recovery strategies with the goal of achieving a competitive advantage.
Luigi Boccherini's Cello Concerto in B-Flat Major, G.482: Creating a Performance Edition through a Critical Study of the 'Original' Version and Friedrich Grützmacher's Edition
Authors:   , Cho Hyun Mi
Published: February 2025

The Cello Concerto in B-flat major, G.482, by Italian composer Luigi Boccherini (1743-1805), is the composer's most beloved work for the instrument, as well as one of the most performed pieces in the Classical concerto repertoire. Historically, cellists performing this work have used an edition prepared by German cellist Friedrich Grützmacher (1832-1903). However, an 'original' version that was discovered in 1949 is significantly different from that of Grützmacher. A comparison of both editions has revealed that Grützmacher in fact made considerable modifications to Boccherini's 'original.' Along with the issue of having two editions, cellists that have played the 'original' edition have noted that there are certain practical and interpretative matters that are not favorable to the cellist, particularly in terms of the way the music is notated and how it lacks many details. This dissertation provides clarity to these issues by undertaking a comprehensive analysis of both editions in order to make cellists become aware of the differences between both editions by comparing musical elements from a performance practice viewpoint. In addition, I discuss relevant issues that are present in the 'original' version, ultimately providing an alternative performance edition to this score that is based on historically informed performance (HIP) practices. Finally, I hope to draw attention on how a performance edition like this can be useful as a rare critical source to one of the major works from the eighteenth-century cello repertoire.
Continuous Harmonic Structure in J.S. Bach's Triple Fugues in The Well-Tempered Clavier and Art of Fugue
Authors:   , Hahn Stephen
Published: February 2025

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.
John La Montaine's "Songs of the Rose of Sharon" and "Fragments from the Song of Songs": A Socio-Historical Analysis and Performer's Guide
Authors:   , Dapcic Samantha
Published: February 2025

The purpose of this research is to examine John La Montaine's only two song cycles for soprano and orchestra, Songs of the Rose of Sharon, opus 6 (1947) and Fragments from the Song of Songs, opus 29 (1959). In this investigation-the first ever specific to these works-I examine the works and cultural context in which they were created. I then evaluate the reasonable possibility that La Montaine used his public platform as a composer and performer to subtly celebrate taboo themes of feminism, sexuality, and blackness while shining a light on human injustice. Through close examination of social and historical context, I argue two points. Firstly, Rose of Sharon and Fragments are landmark American works. They are anomalies in classical music history in that a white male heralds texts about a black woman in an unlikely time in American history, thus arguably becoming an unlikely part of the evolution of African-American women in artistic endeavors. Secondly, in the performance guide, I advocate that these works would readily adapt to a staged performance. I discuss how La Montaine's musical settings illustrate the inherent drama of the text, provide a context for interpreting the protagonist in Rose of Sharon and Fragments, and present an interpretation of how these works could be staged. The ultimate goal of this research is to bring these intricately crafted masterpieces to the attention of singers and voice teachers so that they may assume their rightful place in the repertoire.
Skin Detection in Image and Video Founded in Clustering and Region Growing
Authors:   , Islam A B M Rezbaul
Published: February 2025

Researchers have been involved for decades in search of an efficient skin detection method. Yet current methods have not overcome the major limitations. To overcome these limitations, in this dissertation, a clustering and region growing based skin detection method is proposed. These methods together with a significant insight result in a more effective algorithm. The insight concerns a capability to define dynamically the number of clusters in a collection of pixels organized as an image. In clustering for most problem domains, the number of clusters is fixed a priori and does not perform effectively over a wide variety of data contents. Therefore, in this dissertation, a skin detection method has been proposed using the above findings and validated. This method assigns the number of clusters based on image properties and ultimately allows freedom from manual thresholding or other manual operations. The dynamic determination of clustering outcomes allows for greater automation of skin detection when dealing with uncertain real-world conditions.
Uncle Sam Does Not Want You: Military Rejection and Discharge during the World Wars
Authors:   , Smith Chamberlain Tiffany Leigh
Published: February 2025

In the United States, rapid military mobilization for the world wars marked a turning point in the national need to manage and evaluate manpower. To orchestrate manpower needs for the military, industry, and those relating to familial obligations, Woodrow Wilson's administration created the Selective Service System during the First World War. In categorizing men, local Selective Service boards utilized rapid physical and psychological diagnostic techniques and applied their assessments to current military branch induction standards to pronounce candidates as militarily fit or unfit. From World War I to World War II, the Selective Service System expanded as a bureaucracy but did not adequately address induction issues surrounding rapidly changing standards, racism, and inconsistent testing procedures. These persistent problems with Selective Service prevented the system from becoming truly consistent, fair, or effective. As a result of Selective Service System, War Department, and military branch standards, military rejection and prematurely military discharge rates increased in World War II. Additionally, though Selective Service did not accurately predict who would or would not serve effectively, rejected and prematurely discharged men faced harsh discrimination on the American home front during World War II.