bluuebunny/crossref_metadata_2025 huggingface dataset:
Reliability of Treatment Integrity Assessment with Multiple Observers: Can Agreement Be Assumed?
Authors:   , Cohen Lindsay Anne
Published: January 2025

Interobserver agreement (IOA) was calculated across three participant dyads for a generalized treatment integrity tool. No dyads achieved 80% agreement during baseline. Task clarification was piloted as an intervention for two of the three dyads. Form agreement produced stabilization in both dyads and improvement in one dyad. Time agreement did not improve but demonstrated marked trends in one dyad.
Considerations in Designing Alloys for Laser-Powder Bed Fusion Additive Manufacturing
Authors:   , Thapliyal Saket
Published: January 2025

This work identifies alloy terminal freezing range, columnar growth, grain coarsening, liquid availability towards the terminal stage of solidification, and segregation towards boundaries as primary factors affecting the hot-cracking susceptibility of fusion-based additive manufacturing (F-BAM) processed alloys. Additionally, an integrated computational materials engineering (ICME)-based approach has been formulated to design novel Al alloys, and high entropy alloys for F-BAM processing. The ICME-based approach has led to heterogeneous nucleation-induced grain refinement, terminal eutectic solidification-enabled liquid availability, and segregation-induced coalescence of solidification boundaries during laser-powder bed fusion (L-PBF) processing. In addition to exhibiting a wide crack-free L-PBF processing window, the designed alloys exhibited microstructural heterogeneity and hierarchy (MHH), and thus could leverage the unique process dynamics of L-PBF to produce a fine-tunable MHH and mechanical behavior. Furthermore, alloy chemistry-based fine tuning of the stacking fault energy has led to transformative damage tolerant alloys. Such alloys can shield defects stemming from the stochastic powder bed in L-PBF, and consequently can prevent catastrophic failure despite the solidification defects. A modified materials systems approach that explicitly includes alloy chemistry as a means to modify the printability, properties and performance with F-BAM is also presented. Overall, this work is expected to facilitate application specific manufacture with F-BAM and eventually facilitate widespread adoption of F-BAM in structural application.
Mechanically Driven Reconstruction of Materials at Sliding Interfaces to Control Wear
Authors:   , Shirani Asghar
Published: January 2025

To minimize global carbon emissions, having efficient jet engines and internal combustion engines necessitates utilizing lightweight alloys such as Al, Ti, and Mg-based alloys. Because of their remarkable strength/weight ratio, these alloys have received a lot of attention. Nonetheless, they have very poor tribological behavior, particularly at elevated temperatures beyond 200 °C, when most liquid lubricants begin to fail in lubrication. Over the last two decades, there has been a lot of interest in protecting Al, and Ti-based alloys by developing multiphase solid lubricants with a hard sublayer that provide mechanical strength and maintain the part's integrity while providing lubricity. The development of novel coatings with superior lubricity, high toughness, and high-temperature tolerance remains a challenging and hot topic to research and provide new engineered solutions for. To address and provide solutions to protect light-weight, i.e., Al, and Ti alloys at high-temperature and bestow superior tribological properties to such alloys, three types of adaptive lubricious coatings have been studied in this thesis: Nb-Ag-O self-healing lubricious ternary oxide, PEO-chameleon a self-adaptive multi-phase coating, and Sb2O3-MSH-C lubricious adaptive coatings to address this challenge. The development of the Nb-Ag-O ternary resulted in a coefficient of friction as low as 0.2 at 600 °C and crack healing at 900 °C. PEO-chameleon coatings demonstrated a remarkably low COF, as low as 0.07 at 300 °C and 1.4 GPa applied pressure. Finally, the Sb2O3-MSH-C multi-phase lubricious solid lubricant revealed superlubricity, with a CoF of 0.008 at 300 °C, providing a potentially promising contender for high-temperature, high-load applications.
The Death and Life of Great American Malls: (Un)Spectacular Creative Destructions, Luxury Mixed-Use Developments, and Gentrification in Dallas-Fort Worth
Authors:   , Kirk Richard L.
Published: January 2025

Mall after mall was built in American cities, exhaustively emulated by developers often working in concert with civic governments. In service of capital, neoliberal urban governance engages in the risky subsidization of spatio-spectacle production, working together with private business entities to bolster tax revenue and aid in private capital accumulation. The extensive replication of malls in close geographic proximity to one another across the American landscape, erected through the neoliberal partnerships of civic governments and private business interests, has greatly contributed to mall decline and mall death. There is now, however, a new spatio-spectacle that has arisen to take the place of the "great American shopping mall"—the luxury mixed-use development. These luxury mixed-use projects have been adopted as a new trend within urban development following the reality of sweeping mall decline and are proliferating across the (sub)urban landscape. Luxury mixed-use developments, I argue, are merely a continuation of late capitalism's problematic spectacle fetish. Moreover, this process is revealed to be inextricably entangled with gentrification, driven by cities' neoliberal desires to become/maintain status as global, "world-class" cities, performed through the spatialized ideology of neoliberal multiculturalism.
Ideal Hausmusik: Brahms's Vocal Quartets (opp. 31, 52, 64, 65, 92, 103, and 112) and the Politics of Domestic Music ca. 1848-1900
Authors:   , Anderson Robert Michael
Published: January 2025

This dissertation contextualizes Brahms's vocal quartets within a largely forgotten discourse about Hausmusik that flourished in German-speaking lands in the second half of the nineteenth century. In numerous texts about Hausmusik from ca. 1848-1900, authors conceived the genre as an aesthetically and politically conservative expression of German identity and connected its accessible style to an ideal of social cohesion in the pre-industrial age. Similar issues of national identity and musical style arise in the reception of Brahms's quartets, which, I contend, was informed by the works' generic status as Hausmusik. Critics either praised Brahms's works for their simple, folk-like style or disparaged their complexity, artifice, and foreignness. Ultimately, I argue, Brahms sought to elevate the genre of Hausmusik in his vocal quartets by integrating aesthetic and cultural values associated with this genre with a more sophisticated musical style. The works' stylistic and generic ambiguity and the disparity in critics' responses reveal competing aesthetic, political, and cultural world views immediately before and after German unification. Chapter 2 shows how discourse about Hausmusik constructed German identity in the private sphere by promoting a folk-like aesthetic and accessible musical style over the perceived cosmopolitanism and commercialism of Salonmusik and other repertoires. Chapter 3 investigates the tension between Hausmusik and chamber styles and their associated opposing cultural values. Chapter 4 explores a similar conflict between folk and popular musical styles manifested in reactions to the Liebeslieder, which were interpreted as either Ländler or Viennese waltzes. Finally, chapter 5 demonstrates how reception of the Zigeunerlieder reflects the impulse to define German identity in opposition to a foreign "other" by sharply distinguishing between German and exotic musical styles. By relating these descriptive reviews of Brahms's works to largely prescriptive texts about Hausmusik, I define the genre by delimiting its boundaries and demonstrate the crucial role domestic music-making played in the expression of German identity in the second half of the nineteenth century.
Band Theory and Beyond: Applications of Quantum Algorithms for Quantum Chemistry
Authors:   , Sherbert Kyle Matthew
Published: January 2025

In the past two decades, myriad algorithms to elucidate the characteristics and dynamics of molecular systems have been developed for quantum computers. In this dissertation, we explore how these algorithms can be adapted to other fields, both to closely related subjects such as materials science, and more surprising subjects such as information theory. Special emphasis is placed on the Variational Quantum Eigensolver algorithm adapted to solve band structures of a periodic system; three distinct implementations are developed, each with its own advantages and disadvantages. We also see how unitary quantum circuits designed to model individual electron excitations within a molecule can be modified to prepare a quantum states strictly orthogonal to a space of known states, an important component to solve problems in thermodynamics and spectroscopy. Finally, we see how the core behavior in several quantum algorithms originally developed for quantum chemistry can be adapted to implement compressive sensing, a protocol in information theory for extrapolating large amounts of information from relatively few measurements. This body of work demonstrates that quantum algorithms developed to study molecules have immense interdisciplinary uses in fields as varied as materials science and information theory.
Modeling Hypertrophic Cardiomyopathy Using Genome-Edited Human Induced Pluripotent Stem Cell-Derived Cardiomyocytes in Response to Dynamic Mechanotransduction
Authors:   , Strimaityte Dovile
Published: January 2025

Familial hypertrophic cardiomyopathy (HCM) is a genetic disease largely caused by a mutation in myosin binding protein C (MYBPC3) and it affects about 1:500 population leading to arrhythmic sudden death, heart failure, and atrial fibrillation. MYBPC3 activates calcium-induced actin-myosin filament sliding within the cardiac sarcomere, creating the force necessary for heart contraction. The underlying molecular mechanisms causing HCM phenotype remain elusive, therefore, there is an urgent need for a reliable in vitro human HCM model to investigate the pathogenesis of HCM. This study utilized isogenic human induced pluripotent stem cell-derived cardiomyocytes (hiPSC-CMs) with MYBPC3 gene mutation (wildtype, heterozygous, homozygous) and further micropatterned them into fiber-like structures on polyacrylamide hydrogels of physiological and fibrotic-like stiffnesses. Cells were cultured for an extended culture time up to 60 days and their morphology/attachment, contractility, and calcium transient were extensively and carefully evaluated. It was found that MYBPC3 knockout cells maintained the highest contraction amplitude, but had increased contraction, and relaxation durations, decreased calcium transient amplitude, as well as time to peak and decay times over the culture period in comparison to the isogenic wildtype. Overall, this study demonstrates that hiPSC-CMs can be successfully patterned and cultured for an extended time on hydrogels forming end-to-end connections, which can be served as a simple yet effective in vitro human model for studying mechanical dysfunction of HCM.
Metal-Macrocyclic Frameworks based on Aza-Macrocycles: Design Strategies and Applications
Authors:   , Ren Junyu
Published: January 2025

The present thesis mainly proposes to explore the potential of aza-macrocycles in metal-organic frameworks (MOFs) for applications related to unprecedented open macrocycle cavities. Strategies such as direct arylation of secondary amines as well as multidentate coordination were applied to constrain the intramolecular flexibility of as-obtained macrocyclic compounds. Several desired materials, i.e. MMCF-4, MMCF-5/MMCF-5t/MMCF-5t-aa, MMCF-5, HMMCF-1, were obtained. They are proved superior to traditional materials in the field of "turn-on" lanthanide luminescence, deep desulfurization of flue gas, recovery of Platinum-group metals, etc. Powder/single-crystal X-ray diffraction (PXRD/SCXRD), synchrotron-based X-ray and extended X-ray absorption fine structure (EXAFS), density functional theory (DFT) theoretical calculations, etc., were employed for deep-understanding the mechanisms. These studies shed light on the construction of hierarchically porous materials with two levels of porosity, i.e., one from the frameworks and the other one from the aza-macrocycles. Incorporation of aza-macrocycles into the MOF architectures not only leads to fundamental significance in bridging the chemistry of MOFs with supramolecular chemistry but also elicits unique properties from the hybrid materials obtained. As a paradigm for constructing frameworks with accessible macrocyclic cavities based on "constrained" aza-macrocycle ligands, this thesis paves the way for the further development of this framework family in the future.
"Instants d'un Opéra de Pékin" by Qigang Chen (b. 1951): A Blend of Peking Opera and French Influences
Authors:   , Jiang Xue
Published: January 2025

Chinese contemporary composer Qigang Chen describes himself as "a Chinese tree replanted in France." His piano solo work Instants d'un Opéra de Pékin presents both Eastern and Western elements equally. While the main motives and melodic ideas are based on Chinese modes and scales, Chen incorporates many Western compositional techniques, particularly those of Olivier Messiaen, such as fragmentation and elimination, rhythmic augmentation and diminution, octave displacement among others. In this dissertation, I review the historical development of Peking Opera. Through the musical examples, I also illustrate the incorporation of two fundamentally different musical backgrounds and compositional styles that interact, express, and present themselves as equally relevant in both Eastern and Western musical language.
Corrosion Behavior of High Entropy Alloys in Molten Chloride and Molten Fluoride Salts
Authors:   , Patel Kunjalkumar Babubhai
Published: January 2025

High entropy alloys (HEAs) or complex concentrated alloys (CCAs) represent a new paradigm in structural alloy design. Molten salt corrosion behavior was studied for single-phase HEAs such as TaTiVWZr and HfTaTiVZr, and multi-phase HEAs such as AlCoCrFeNi2.1. De-alloying with porosity formation along the exposed surface and fluxing of unstable oxides were found to be primary corrosion mechanisms. Potentiodynamic polarization study was combined with systematic mass–loss study for TaTiVWZr, HfTaTiVZr, and AlCoCrFeNi2.1 as a function of temperature. Electrochemical impedance spectroscopy (EIS) was used for monitoring the corrosion of TaTiVWZr and HfTaTiVZr in molten fluoride salt at 650 oC. TaTiVWZr and AlCoCrFeNi2.1 showed low corrosion rate in the range of 5.5-7.5 mm/year and low mass-loss in the range of 35-40 mg/cm2 in molten chloride salt at 650 oC. Both TaTiVWZr and HfTaTiVZr showed similar mass loss in the range of 31-33 mg/cm2, which was slightly higher than IN 718 (~ 28 mg/cm2) in molten fluoride salt at 650 oC. Ta-W rich dendrite region in TaTiVWZr showed higher corrosion resistance against dissolution of alloying elements in the molten salt environment. AlCoCrFeNi2.1 showed higher resistance to galvanic corrosion compared to Duplex steel 2205 in molten chloride salt environment. These results suggest the potential use of HEAs/CCAs as structural materials in the molten salt environment for concentrating solar power and nuclear reactor systems.
Gradient-Index Metamaterial Infrared Detector for Enhanced Photo-Response and Image Quality
Authors:   , Adams Kelsa Derek
Published: January 2025

An enhanced thermal imaging concept made possible through the development of a gradient-indexed metamaterial infrared detector that offers broadband transmission and reflection in THz waves. This thesis proposes a proof of feasibility for a metamaterial infrared detector containing an anti-reflective coating with various geometrically varying periodic metasurfaces, a gradient-indexed dielectric multilayer for near-perfect longpass filtering, and a gradient index of refraction (GRIN) metalens for enhanced focal plane thermal imaging. 2D Rigorous Coupled-Wave Analysis (RCWA) is used for understanding the photonic gratings performance based on material selection and varying geometric structure. Finite Difference Time Domain (FDTD) is used to characterize performance for a diffractive metalens by optimizing the radius and arrangement of cylindrical nanorods to create a desired phase profile that can achieve a desired focal distance for projections on a detector for near- to far-infrared thermal imaging. Through combining a micromachined anti-reflective coating, a near-perfect longpass filter, and metamaterial GRIN metalens, infrared/THz focal plane thermal imaging can obtain faster photo-response and image quality at targeted wavelengths, which allows for scientific advancements in electro-optical devices for the Department of Defense, aerospace, and biochemical detection applications.
Investigating the Effects of COVID-19-Related Restrictions on Abortion Access in Texas
Authors:   , Irby Elsa Louise
Published: January 2025

Whether it is social stigma or state policy, abortion seekers are facing an intense amount of obstacles when it comes to accessing their abortion in Texas during the pandemic. To better understand how COVID-19 affected the landscape of abortion access, it was necessary to listen to the experiences of abortion seekers during the pandemic. Experts in the field of abortion advocacy were also interviewed to provide perspective on the trajectory of abortion access during COVID-19. Abortion seekers were screened through a survey to ensure they met the criteria of getting an abortion, living in Texas, and being 18+ while experts in the field were contacted through my personal activist network. COVID-19 exacerbated challenges that already existed in the landscape of abortion access in Texas. Misinformation and managing the tentative scheduling of clinics are two of the most prominent exacerbated challenges abortion seekers experience. This is followed by an increase in exposure to unsupportive families as well as the expenses that come with traveling to appointments. The additional COVID-19 related restrictions created consequences that embodied themselves as delays in receiving abortion care, a much lonelier process, and tentative employment. A positive outcome of COVID-19 is the potential of abortion care being integrated into Telehealth services that would severely decrease the public harassment abortion seekers and providers experience from antis standing outside of clinics, travel expenses, and the lack of privacy some might feel when going into a clinic.
Fabrication of the Novel Asymmetric Polymeric Materials via Bottom-Up Approach
Authors:   , Hnatchuk Nataliia
Published: January 2025

Asymmetric polymeric materials can be formed by either top-down or bottom-up methods. Bottom-up methods involve assembling the atoms and molecules to form small nanostructures by carefully controlled synthesis, which results in a reduction of some of the top-down limitations. In this dissertation, thermal, tribological and antireflective properties of polymeric materials have been enhanced by introducing structural asymmetry. The overall performance of commercial polymeric coatings, e.g. epoxy and polyvinyl chloride, has been improved by conducting the blending methods, specifically, chemical modification (α,ω-dihydroxydimethyl(methyl-vinyl)oligoorganosiloxane), cross-linking (triallyl isocyanurate), and antioxidant (tris(nonylphenyl) phosphite) incorporation. The nonequilibrium polymeric structures (moth-eye and square array) have been developed for the ultrahigh molecular weight block copolymers via the short-term solvent vapor annealing self-assembly. The large domain size of the moth eye structure allows for improvement of the light transmittance particularly in the visible and near infrared ranges, while the square arrangement of the block copolymer opens the possibility of magnetic data storage application by the large magnetic nanoparticles' embedment or masking of the superconductors.
Machine Learning in Computational Chemistry
Authors:   , Kuntz David Micah
Published: January 2025

Machine learning and artificial intelligence are increasingly becoming mainstream in our daily lives, from smart algorithms that recognize us online to cars that can drive themselves. In this defense, the intersection of machine learning and computational chemistry are applied to the generation of new PFAS molecules that are less toxic than those currently used today without sacrificing the unique properties that make them desirable for industrial use. Additionally, machine learning is used to complete the SAMPL6 logP challenge and to correlate molecules to best DFT functionals for enthalpies of formation.
Cultures of Elite Theatre in the Elizabethan and Jacobean Masque: Four Incarnations
Authors:   , Rogener Lauren J
Published: January 2025

The early modern English masque is a hybrid form of entertainment that included music, dance, poetry, and visual spectacle, and for which there is no modern equivalent. This dissertation looks at four incarnations of the Elizabethan and Jacobean masque: the court masque, the masque embedded in the progress entertainment, the masque embedded in the commercial play, and the masque embedded in the commercial play performed at court. This study treats masques as a form of elite theatre (that is, theatre for, by, and about elite figures like monarchs and aristocrats) and follows them from the court to the countryside, through the commercial playhouse, and back again to the court in pursuit of a more nuanced picture of the hybridity and flexibility of early modern English performance culture.
Public Opinion and Maintaining Political Power: The Case of AKP Government and Social Media in Turkey
Authors:   , Demirhan Emirhan
Published: January 2025

This dissertation consists of three chapters, aiming to analyze, understand and discuss how Turkish public opinion fluctuates on social media based on governmental actions and how that fluctuation affects the society and politics in Turkey. Using textual data from social media, I combined natural language processing techniques with statistical methods, to study how Turkish public opinion is shaped by governmental actions in various scenarios. In the first chapter, I created a social network of Twitter users to detect the differences in the extent of political polarization between pro-government and opposition voters during the June 2019 Istanbul mayoral election. The second chapter focuses on the stigmatization of a social/religious group in Turkey by government-driven labeling and terrorism designation. Word embeddings are used to pinpoint the offensive language and the hate campaign against the group, considering the labels that are used to identify the group. Finally, the third chapter examines the rally-around-the-flag effect during highly inciting moments like cross-border military operations. A corpus of tweets for each of the two Turkish cross-border military operations is analyzed using topic modeling and sentiment analysis to get a grasp of the rally effect and how the governments can benefit in internal matters from the changes in public discourse because of this rally effect.
The Community of Inquiry Survey Instrument: Measurement Invariance in the Community College Population
Authors:   , Chambers Roger Antonio
Published: January 2025

This study aimed to observe measurement invariance between community college students and university students in response to the Community of Inquiry (CoI) Survey instrument. Most studies of the CoI survey instruments have recorded and validated the instruments considering undergraduate or graduate students. This study sought to validate and prove the survey tool as a reliable instrument for the community college population. The study employed SEM and meta-analytic procedures to observe measurement invariance between a Monte Carlo generated general university sample population and the community college survey population. The findings are discussed, as well as the implications for CoI studies in the community college.
Spiritual Fortitude and Mental Health amidst the COVID-19 Pandemic
Authors:   , Zhang Hansong
Published: January 2025

The COVID-19 pandemic is a global traumatic stressor affecting millions of individuals worldwide. Traumatic events often cause significant resource loss and negatively affect mental health and emotional well-being. In the wake of trauma, many people draw on religious or spiritual faith to cope with adversity and suffering. One construct that has received increased attention within the field of religious/spiritual coping is spiritual fortitude (SF). SF refers to the one's ability to consistently draw on spiritual resources to transcend negative emotions in the face of stressors. In this study, I recruited 255 participants who had lived during the COVID-19 pandemic. Participants completed measures of resource loss, religious/spiritual struggles, SF, religious commitment, depression, anxiety, and post-traumatic stress disorder (PTSD) symptoms. The overall results suggested participants utilized a wide range of coping strategies (e.g., religious/spiritual, social, health practice) during the COVID-19 pandemic. Both resource loss and religious/spiritual struggles were positively associated with mental distress. SF buffered the deleterious relationship between resource loss and mental distress. Specifically, for individuals high in SF, the relationship between resource loss and mental distress was weaker than for individuals low in SF.
Racial Microaggressions, Racial/Ethnic Identity, and Sense of Belonging among Students of Color
Authors:   , Davis Cameron W
Published: January 2025

Victims of racial discrimination often experience negative consequences that extend into all aspects of well-being (e.g., psychological, subjective, social). Racial microaggressions describe a series of verbal and non-verbal behaviors that cause harm, perpetuate negative stereotypes, and negate the experience of racial/ethnic minorities. Research has found a negative relationship between experiencing racial discrimination and psychological well-being, as well as a potential buffering effect of racial/ethnic identity. However, less information is available about the existence of these relationships with social well-being. The purpose of this dissertation is to fill a gap in the literature in regard to racial microaggressions, racial/ethnic identity, and social well-being in 453 racially diverse undergraduate students. Quantitative results indicated that African Americans reported higher levels of racial microaggressions and racial/ethnic identity than other groups, racial microaggressions were negatively associated with sense of belonging, racial/ethnic identity was positively associated with sense of belonging, and the association between racial microaggressions and sense of belonging was not moderated by racial/ethnic identity. Qualitative analyses using the conventional content analysis revealed two clusters of facilitative behavioral expressions of university/community inclusion: (a) interpersonal expressions of inclusion and (b) systemic expression of inclusion. I conclude by discussing limitations, areas for future research, and implications for counseling.
The Impact of Blockchain Food Tracing Information Quality and Trust on Intention to Purchase
Authors:   , Lai Im Hong
Published: January 2025

The purpose of our research is to empirically test how system attributes of blockchain build trust through system and information components in blockchain food traceability systems. Findings showed that system attributes of blockchain are strong predictors of trust leading to intention to purchase. A sample of 358 responses were collected from college students through online survey. SmartPLS 3.0 is adopted for data analysis. We made contributions by building a new research model to guide future studies on trust formation in blockchain based systems as well as informing practice to adopt proven features of blockchain to create and capture values for customers.
Assessing Student Perceptions in Short Research Experiences and Course Research Experiences in Undergraduate Biology Laboratories
Authors:   , Alberts Arland Dulcey
Published: January 2025

This study examined students' perception between short research experiences (SRE) courses and full-semester course research experiences (CRE) using the Persistence in the Sciences (PITS) survey and the interview questionnaire. The study also aimed to correlate the influence of student's demographic as a predictive indicator for Project Ownership Scores (POS) and Quantitative Literacy (QL) score means. The three courses studied at the University of North Texas were Biology for Science Majors Laboratory (BIOL 1760 SRE), Microbiology with Tiny Earth (BIOL 2042 Tiny Earth SRE), and Introductory Biology Research Laboratory I (BIOL 1750 SEA-PHAGES CRE). The mean scores for the PITS categories leaned favorably towards the research component of each laboratory course assessed in this study. The interview questionnaire showed 66% of the students in the SRE courses and 90% of the students in the CRE course preferred the research component of the lab. Paired survey demographic analysis for BIOL 1760 SRE showed significance for the Science Community Values with associate/bachelor's degree. BIOL 1750 SEA-PHAGES CRE showed significance in three of the six categories when comparing means for Project Ownership Emotion, Self-Efficacy, and Science Identity with Gender. Binary logistics was used to build a regression model to predict demographics with approximately 65% to 75% accuracy for each course. When analyzing students' QL score, the demographic category "Ethnicity" showed significance for BIOL 2042 Tiny Earth SRE. Categorizing the correct response into two categories for the QL test scores, the SRE and CRE courses, and analyzing the PITS scores for paired data sets showed that there was significance in the Networking category for the question "I have discussed my research in this course with professors other than my course instructor." The validated PITS, POS, and interview questionnaire could be a tool for use to analyze laboratories at UNT that offer a SRE or CRE component and to understand students' perceptions on the effectiveness of the laboratory.
Moral Injury Development and Repair in Service Members and Veterans: The Roles of Self-Forgiveness, Perceived Social Support, and Causal Attributions
Authors:   , Coomes Steven P.
Published: January 2025

Moral injury (MI) among military personnel is a harmful condition caused by perpetrating, failing to prevent, or witnessing atrocities that violate one's deeply held morals or values. The current study built on the existing literature by exploring predictors of MI, specifically trait self-forgiveness (TSF), state self-forgiveness (SSF), perceived social support (PSS), and causal attributions (CA) following potentially morally injurious experiences (PMIEs) in service members and veterans. Participants were 92 U.S. military service members and veterans. The main findings were that TSF and PSS were both significantly negatively associated with MI in bivariate and multivariate analyses. Further, TSF and PSS were examined as potential moderators of the relationship between PMIEs and MI, but these moderation analyses were not significant. Given that some studies provide evidence for different symptom profiles between categories of PMIEs (i.e., PMIE-Self, PMIE-Other, and PMIE-Betrayal), the relationship between the different categories and TSF were explored. Of the three PMIE types, only PMIE-Betrayal was a significant negative predictor of TSF. Finally, CA was explored as a potential mediator of the relationship between TSF and MI outcomes, but this mediation analysis was not significant. Limitations, directions for future research, and implications for clinical practice are included for discussion.
The Cost of Higher Education: Impacts of Student Loan Debt on the Life Course for Hispanic Americans
Authors:   , Knudsen Jennifer L
Published: January 2025

Student loan debt continues to be an issue in the U.S., with potential long-term effects on loan repayment and potential wealth accumulation. In particular, minorities face barriers in the educational system and accruing wealth. Hispanics occupy a middling position in the U.S. racial hierarchy. Using the National Longitudinal Survey of Youth 1997 geocode data, in this study I examined how Hispanic-White differences in student debt change over time and how student debt influences wealth. In addition, I accounted for immigration status via parents' nativity status to investigate debt burdens and subsequent wealth for these respondents. I used hierarchical linear growth models to examine debt growth over time and linear decomposition to examine Hispanic-White differences in wealth accumulation and the impact of student debt on these differences. While findings were largely statistically insignificant, I found that Hispanics tended to start with less debt than their White counterparts and that student debt initially grew for both groups. However, White respondents pay off their debt more quickly than Hispanics. In addition, I found that the wealth gap between White and Hispanic respondents grew significantly between the ages of 20 and 35. While Hispanics tended to start with less debt, my findings suggest that student debt still plays a role in Hispanics' financial well-being, including Hispanic wealth development and the perpetuation of the Hispanic-White wealth gap.
Exploring Adoption, Implementation, and Use of Autonomous Mobile Robots in Intralogistics Applications
Authors:   , Maywald Jacob Daniel
Published: January 2025

Autonomous mobile robots (AMRs) use decentralized, AI-driven decision-making processes to providing material handling capabilities in industrial settings. Essay 1 examines how firms organize and engage to mitigate uncertainty during external technology integration (ETI), using an abductive approach with dyadic customer-supplier data to extend prior ETI models by exploring firm engagement, organizational adaptation, and distinct uncertainty types in AMR ETI projects. Essay 2 applies a grounded theory approach to examine AMR integration, using constant comparison and theoretical sampling to develop core categories explaining how suppliers, customers, and users exchange knowledge impacting AMR integration and project performance. Finally, Essay 3 is a conceptual paper examining the importance of end-user adoption by integrating ETI and technology acceptance model (TAM) frameworks, exploring important relationships between managerial interventions, cognitive constructs, user acceptance, and project success in AMR ETIs. As a whole, these essays contribute to the body of knowledge by extending the breadth and depth of current ETI models, emerging a substantive theory of AMR AIU, and extending TAM by grounding managerial interventions and individual cognitive constructs in an AMR context. Managers can use these frameworks to differentiate AMRs and other autonomous collaborative technology from traditional automation, and develop strategies enabling timely and effective AMR implementation.
The Development of the Attitudes Towards Organic Chemistry Instrument
Authors:   , Collini Melissa Anne
Published: January 2025

In this study, undergraduate student attitudes towards organic chemistry and the influences that shape those attitudes were explored using the Attitudes Towards Organic Chemistry Instrument (ATOC) to collect both qualitative and quantitative data. The findings from the qualitative ATOC items provide evidence that students displayed a wide range of attitudes towards organic chemistry, including positive, negative, neutral, and blended attitudes. Five major influences were shown to have shaped these attitudes including the reputation of the course, students' educators, experiences with organic chemistry, experiences with introductory chemistry, and individual experiences. Students responses longitudinally provide evidence that their influences and attitudes change over time in the course. The findings from the quantitative ATOC items provided evidence that the data generated was valid and reliable, and a relationship was found to exist between what students think and what they had heard about the course. Limitations of this investigation, as well as implications for research and practitioners, are discussed.
Acute Toxicity of Crude Oil Exposures to Early Life Stage Teleosts: Contribution of Impaired Renal Function and Select Environmental Factors
Authors:   , Bonatesta Fabrizio
Published: January 2025

Oil spills are well-known adverse anthropogenic events, as they can induce severe impacts on the environment and negative economic consequences. Still, much remains to be learned regarding the effects of crude oil exposure to aquatic organisms. The objectives of this dissertation were to fill some of those knowledge gaps by examining the effects of Deepwater Horizon (DWH) crude oil exposure on teleost kidney development and function. To this end, I analyzed how these effects translate into potential osmoregulatory impairments and investigated the interactive effects of ubiquitous natural factors, such as dissolved organic carbon (DOC) and ultraviolet (UV) light, on acute crude oil toxicity. Results demonstrated that acute early life stage (ELS) crude oil exposure induces developmental defects to the primordial kidney in teleost fish (i.e., the pronephros) as evident by alterations in: (1) transcriptional responses of key genes involved in pronephros development and function and (2) alterations in pronephros morphology. Crude oil-exposed zebrafish (Danio rerio) larvae presented defective pronephric function characterized by reduced renal clearance capacity and altered filtration selectivity, factors that likely contributed to the formation of edema. Latent osmoregulatory implications of crude oil exposure during ELS were observed in red drum (Sciaenops ocellatus) larvae, which manifested reduced survival in hypoosmotic waters, likely due to defective pronephros development and function. Finally, DOC-UV co-exposure slightly reduced acute crude oil photo-enhanced toxicity in red drum larvae. This dissertation provided novel information regarding crude oil toxicity that can be incorporated into environmental risk assessment and management for future oil spills.
A Content Analysis of the Role of Instagram as a Learning Environment on Health and Fitness
Authors:   , Atamenwan Imonitie Osalume
Published: January 2025

As social media evolves, educators and other professionals have taken advantage of it as a teaching resource. This research focused on exploring the role of Instagram as a learning technology on health and fitness. In this research, there are references to literature that document the impact of social media on health and fitness. This study also highlights several features found on Instagram, Facebook, Twitch, YouTube, and other similar platforms to deliver learning content in real time. Several articles in this dissertation mentioned how social media content can influence the audience and their thoughts on health and fitness. Social media presents the opportunity to access information, impart knowledge as well as other forms of interaction.
Urban Elementary Teachers' Perceptions of Multicultural Education and Culturally Responsive Pedagogy
Authors:   , Davis Vickie Domonique
Published: January 2025

Current literature calls for more culturally responsive pedagogy and multicultural education to connect with what students know, do, and believe outside of school and to utilize this to foster their academic achievement. This study investigated elementary teachers' perceptions of culturally responsive pedagogy and multicultural education in an urban school with a predominantly large minoritized student population (African American and Hispanic students). The study focused on four elementary teachers' perceptions of implementing culturally responsive pedagogy and multicultural education principles into their classroom and how this contributed to teacher-student interactions and student academic achievement. An integrated framework consisting of constructs from the literature on culturally responsive pedagogy and multicultural education guided the study. A thematic analysis of data (interviews, focus group interview, classroom observations, artifacts) revealed four teacher perceptions of culturally responsive pedagogy and multicultural education: Practicing culturally responsive pedagogy and multicultural education: (1) enables teachers and students to embrace diversity; (2) focuses teachers and students on the past and the present social injustices and provides social justice identity development among students; (3) builds empathy among teachers and students; and (4) promotes teachers to reflect on prejudice reduction. Implications: This study showed that constructs from culturally responsive pedagogy and multicultural education are context-specific and curriculum-specific. To the teachers in this study the dynamics of practicing culturally responsive pedagogy and multicultural education are inherent within the school and community contexts and in the curriculum.
Investigating the Effects of Teaching on Response Allocation by Implementing a Changing Criterion Procedure
Authors:   , Krilcich Rachel AnnaSoo
Published: January 2025

The study of choice and allocation has often focused on certain parameters of reinforcement, but rarely on historical variables. The goal of this study was to investigate the potential effects of gradual vs. abrupt teaching methods on future response allocation. A secondary goal was to see if the results of teaching-method manipulations might be correlated with the parameters that the teaching method produced, specifically unit costs, rate of reinforcement, or error rates. Results indicate that these teaching procedures can produce transient shifts in allocation, but not in a consistent direction. Neither unit cost nor rate or reinforcement alone can account for observed response allocation shifts after training. Researchers saw that subjects reliably shifted towards a manipulanda that produced higher rates of errors, therefore investigating the influence that error rate (or types of errors) may have on response allocation may aid in general teaching method preferences. Future research could focus on the combination of historical procedural variables and current variables that could determine response allocation.
"Stateside: An opera in one act" on the Experiences of the Military Spouse
Authors:   , Whelan Rachel Lanik
Published: January 2025

Based on the poetry of Jehanne Dubrow, professor of English at the University of North Texas, Stateside: An opera in one act uses the mythology of Penelope and Odysseus to tell a story of a modern day military wife. David T. Little's opera Soldier Songs, Sarah Kirkland Snider's song-cycle Penelope, and Stateside are dramatic musical works influenced by the genre, instrumentation, and formal structures of popular music that broadly deal with the emotional and internal elements of military life. These three works prioritize narrative structure of the text in relation to character, and employ elements of popular music harmony, melody, and structure. The critical essay analyzes selections from Soldier Songs and Penelope and explains the compositional process of Stateside. The creative document consists of the full score of Stateside: an opera in one act.
The Development and Validation of a Comprehensive Stereotypicality Measure
Authors:   , Latimer Kyjeila
Published: January 2025

Racial stereotypicality refers to the degree to which an individual looks like a "typical" member of their ethnic or racial group by considering multiple phenotypical features such as skin tone and nose width. Prior studies have utilized real and photoshopped images to assess perceptions of individuals high in racial stereotypicality. However, no known studies have allowed participants to engage in the self-assessment of their own facial features outside of skin-tone. In the present study, I develop and investigate the underlying structure of a scale which allows Black individuals to self-assess their perceived degree of racial stereotypicality. I accomplished this by developing items, soliciting expert feedback, conducting cognitive interviews, disseminating the proposed scale, and conducting an exploratory factor analysis (EFA) on a sample of 308 Black adults. EFA results produced a three-factor structure influenced by item wording and reverse coding. Findings also indicated that items which assessed one's overall degree of stereotypicality loaded onto a singular, separate factor as originally theorized. Results suggest that reverse coding, item wording, and response labeling may influence factor structure and negatively impact scale validation procedures. Additionally, items assessing overall stereotypicality may address something distinctly different from other items which assess individual features. Therefore, perceived overall racial stereotypicality should be further tested and considered in future research since it performed fairly during exploratory analysis, aligns with proposed theory, and ultimately homes in on perceptions that may have major implications for understanding how Black phenotypical features impact the lives, outcomes, and experiences of Black individuals.
Stem Cell Regulation Using Nanofibrous Membranes with Defined Structure and Pore Size
Authors:   , Blake Laurence A
Published: January 2025

Electrospun nanofibers have been researched extensively in the culturing of stem cells to understand their behavior since electrospun fibers mimic the native extracellular matrix (ECM) in many types of mammalian tissues. Here, electrospun nanofibers with defined structure (orientation/alignment) and pore size could significantly modulate human mesenchymal stem cell (hMSC) behavior. Controlling the fiber membrane pore size was predominantly influenced by the duration of electrospinning, while the alignment of the fiber membrane was determined by parallel electrode collector design. Electric field simulation data provided information on the electrostatic interactions in this electrospinning apparatus.hMSCs on small-sized pores (~3-10 µm²) tended to promote the cytoplasmic retention of Yes-associated protein (YAP), while larger pores (~30-45 µm²) promoted the nuclear activation of YAP. hMSCs also displayed architecture-mediated behavior, as the cells aligned along with the fiber membranes orientation. Additionally, fiber membranes affected nuclear size and shape, indicating changes in cytoskeletal tension, which coincided with YAP activity. The mechanistic understanding of hMSC behavior on defined nanofiber structures seeks to advance their translation into more clinical settings and increase biomanufacturing efficiencies.
Artificial Neural Network Based Thermal Conductivity Prediction of Propylene Glycol Solutions with Real Time Heat Propagation Approach
Authors:   , Jarrett Andrew Caleb
Published: January 2025

Machine learning is fast growing field as it can be applied to solve a large amount of problems. One large subsection of machine learning are artificial neural networks (ANN), these work on pattern recognition and can be trained with data sets of known solutions. The objective of this thesis is to discuss the creation of an ANN capable of classifying differences in propylene glycol concentrations, up to 10%. Utilizing a micro pipette thermal sensor (MTS) it is possible to measure the heat propagation of a liquid from a laser pulse. The ANN can then be trained beforehand with simulated data and be tested in real time with temperature data from the MTS. This method could be applied to find the thermal conductivity of unknown fluids and biological samples, such as cells and tissues.