Digital Commons Network^™

Compact 1 Ghz Electron Paramagnetic Resonance Spectrometers For Preclinical Imaging Studies, Tanden A. Hovey

Electronic Theses and Dissertations

Magnetic resonance is one of the most generally useful scientific techniques. New horizons of understanding are revealed as technological advances make possible explorations of nuclear spins and electron spins at higher and lower magnetic fields and electromagnetic frequencies. While the greatest current effort is on ever higher magnetic fields and microwave frequencies, both in nuclear magnetic resonance (NMR) and electron paramagnetic resonance (EPR), the Eaton lab focusses on developing high signal-to-noise performance EPR at low microwave frequencies. EPR provides information about O2, pH, viscosity, glutathione concentrations, and reactive oxygen species in living organisms that MRI cannot. To yield clinically or …

Exploring The Impact Of Artificial Intelligence Tools On Special Education Teachers’ Workload And Burnout In Colorado: A Qualitative Phenomenological Study, Rawa Suhail Abu Alsamah

Electronic Theses and Dissertations

In the United States, special education (SPED) teachers face complex workloads, high caseloads, and extensive documentation responsibilities, contributing significantly to burnout and retention issues. The recent integration of artificial intelligence (AI) into educational settings presents promising opportunities to alleviate teachers' instructional and administrative demands. To better understand the impact of AI on SPED teachers, this phenomenological qualitative study explored the lived experiences of licensed K–12 SPED teachers in Colorado who use AI tools in their professional practice. This study also examined how AI tools supported workload management, as well as their perceived impacts on burnout and intentions to remain in …

Three-Dimensional Cell And Nuclear Geometries Inform Tissue Level Fluid Mechanics During Epithelial Remodeling, Liam Joseph Russell

Electronic Theses and Dissertations

During epithelial remodeling, mechanical and molecular programs must coordinate to drive the cell shape changes that enable new tissue topologies. Dynamic morphogenesis requires epithelia to preferentially exhibit solid- or fluidlike properties depending on developmental and biophysical constraints. Convergent extension in the Drosophila germband epithelium is one such remodeling event, during which the lateral ectoderm lengthens by two-fold along the primary body axis while concomitantly shortening orthogonally. This process is an incredibly dynamic and attractable system for studying tissue morphogenesis mechanics in vivo.

Germband extension is driven by oriented cell intercalation through T1 transitions, where cells directionally interdigitate with one another …

Investigating Caveolar Systems: Spatiotemporal Quantification Of Caveolin-1 And The Mechanotransducive Function Of Ehd2, Jasper Stanae Farrington

Electronic Theses and Dissertations

Caveolae are 50-100nm cholesterol rich flask shaped invaginations found in many differentiated cells. Namely, these structures have been seen to be abundant in endothelial cells where they are involved in many signaling contexts. However, under mechanical stress, the characteristics of caveolae alter, flattening to increase membrane compliance, while displaced proteins can shift from structural roles to mechanosensitive signaling functions. Caveolin-1 (Cav1) is the principal protein required for Caveolar formation while Eps15 Homology Domain Containing Protein 2 (EHD2) is a membrane ATPase that acts to stabilize caveolae at the surface. Despite their emerging importance, understanding the organization and dynamic regulation of …

Unmaking Crane Hall: Institutional Change And The Politics Of Exhibit Closures At The Denver Museum Of Nature And Science, Abigail Genene Duff

Electronic Theses and Dissertations

This thesis examines the June 2023 closure of the North American Indian Cultures Hall (NAICH) at the Denver Museum of Nature and Science (DMNS) as a critical moment of institutional transformation. Through a case study approach grounded in archival research, interviews, surveys, and discourse analysis of social media posts and public commentary, this project investigates how exhibit closures reflect shifting dynamics of curatorial authority, Indigenous representation, and settler colonial structures. Guided by theoretical frameworks of settler colonial theory, desire-based research, institutional critique, and museum anthropology, this study explores how internal museum politics, community opinion, and public narratives reshape accountability and …

Examining Intimate Partner Violence After Pediatric Traumatic Brain Injury, Rebecca R. Suzuki

Electronic Theses and Dissertations

Pediatric traumatic brain injury (TBI) is linked with social problems in peer relationships that can last into adulthood. Little is known about how social problems impact the development of intimate relationships as pediatric TBI survivors grow up. This study addressed this gap by examining risk of intimate partner violence (IPV) in a sample of 50 young adult survivors of pediatric TBI prior to age 13 (M age = 22.96, SD = 1.70, 60% women) and tested social information processing (SIP) as a potential process through which TBI influences risk for IPV. Participants were recruited via Prolific and social media …

The Invisible Poet: Stories Of Higher Education Professional Staff Program Experiences Via Poetic Inquiry Through A Wellness Dimensions Framework, Freyja Hofler

Electronic Theses and Dissertations

It is well documented that burnout and low levels of employee wellness have negative effects upon employees as well as the organizations that employ them (Gallup, 2019; Maurer, 2024; Wright & Bonett, 2007). This study was a program evaluation of the C2 Initiatives program via a constructivist paradigm, responsive evaluation approach, and summative outcome evaluation. The NWI’s Six Dimensions of Wellness model was utilized as the theoretical framework of the study and arts-based research was used as the conceptual framework.

Participants were given documents from the C2 Initiatives program as a text base to create blackout poetry, a type of …

Field-Like- And Self-Spin-Orbit Torques In Magnetic Multilayer Films, Kyle Jeffrey Peterson

Electronic Theses and Dissertations

Spin-orbit torques (SOTs) have been realized as an energy efficient mechanism to manipulate and drive magnetization dynamics in magnetic multilayer films. Their damping-like and field-like components provide distinct pathways for controlling the magnetization, enabling switching, sustaining magneto-oscillations, and driving domain-wall motion with potential applications in nonvolatile memory, spin-based logic, and microwave signal generation. However, the accurate quantification and interpretation of these torques remains complicated by experimental sensitivity, the co-symmetry of the Oersted field and the effective field due to the field-like torque, and assumptions regarding the material layers from which the torques originate. The body of work set forth in …

Exploring Foundations Of Animal Host-Microbe Interactions In A Freshwater Sponge, Jacob S. Pawley

Electronic Theses and Dissertations

The most ancient eukaryotic immune defense mechanisms evolved in unicellular species. Multicellular eukaryotes, however, expanded these mechanisms to meet challenges unique to multicellular life, including barrier formation, long-distance cell signaling, and coordinated responses that eliminate microbial threats while minimizing damage to the host. As such, animal immune signaling pathways are exceptionally intricate and diverse. Though, most of what is understood about animal host–microbe interactions stems from a small handful of model systems. Here, I evaluate host–microbe interactions and innate immunity in sponges using the highly tractable freshwater sponge, Ephydatia muelleri. I report the discovery of an external host-derived matrix …

Protest, Police, Peace, And Violence: Understanding Variation In Police Violence At Protests, Louis Pascarella

Electronic Theses and Dissertations

Why do police engage in violence at some protests but not others? Existing research highlights the importance of protest characteristics, political context, police culture, organizational incentives, and interactions between protesters and law enforcement. While these factors help explain patterns of repression, they provide limited insight into why police responses can shift rapidly from restraint to widespread violence during the course of a protest event.

This dissertation examines variation in police violence during the 2020 George Floyd Uprising through a comparative analysis of protest events in Denver, Colorado and Seattle, Washington. Drawing on original event reconstructions based on livestreams, helicopter footage, …

A Longitudinal Study Of Achilles Tendon Adaptation In Ncaa Division I Female Gymnasts: Associations With Menstrual Status, Birth Control Use, Pain, Limb Dominance, And Training Exposure, Mattie Jane Hyde

Electronic Theses and Dissertations

This longitudinal study evaluated Achilles tendon (AT) thickness in 22 NCAA Division I (DI) female gymnasts across three consecutive seasons in relation to menstruation, birth control use, pain, limb dominance, training week, and year of collegiate competition. Weekly ultrasound and athlete survey data were analyzed using mixed-effects models for absolute AT thickness and change in thickness from baseline measurements. Associations were primarily characterized by interactions rather than uniform effects of individual predictors. A Pain × Limb Dominance × Week × Year interaction was associated with both thickness outcomes across season-specific and combined analyses, with relationship directions varying by limb, season …

Disrupted Family Ecosystems: Intergenerational Estrangement, Nonnormative Events, And Perceptions Of Established Adults – A Case Study, Seth Wyncott

Electronic Theses and Dissertations

The issue of intergenerational family estrangement has gained increased exposure in research and popular literature; however, significant gaps remain in understanding the lived experience of adult-children who maintain separation from their parents. Complicating matters, the family is not a solitary unit but is intertangled within a macrolevel sociocultural ecosystem. This ecosystem includes normative and nonnormative stressors which are subject to diverse interpretations depending on the historic and evolving character of the family and its members. As such, it is important to examine the dynamic character of estrangement in familial and sociocultural context.

Utilizing a case study method with semi-structured phenomenological …

Well-Being Beyond The Binary In Perinatal Healthcare: An Application Of Reproductive Justice, Orphea D. Wright

Electronic Theses and Dissertations

Gender diverse birthing individuals face several systemic barriers to accessing affirming and empowering perinatal healthcare. The present study utilizes the term gender diverse and the abbreviation TGE to describe those who self-identify as broadly non-cisgender, an umbrella term for people whose gender identity differs from their sex assigned at birth. Gender identities that may be included in this definition include transgender/trans, gender expansive, non-binary, gender fluid, gender nonconforming, gender variant, gender queer/queer, and/or agender. Gender diverse individuals face unique barriers in perinatal healthcare due to the pervasiveness of cisnormativity in perinatal healthcare spaces. Research has documented the harm caused to …

The Resilient Mother: Exploring Factors That Buffer The Influence Of Early Childhood Trauma On Maternal Self-Efficacy, Brigid Magdamo

Electronic Theses and Dissertations

Childhood maltreatment and toxic stress pose significant risks to both individuals and communities, yielding negative outcomes that can perpetuate across generations— a phenomenon known as intergenerational trauma. Early intervention is imperative to disrupt this cycle of adversity and promote positive outcomes. One promising approach involves leveraging protective and promotive factors that cultivate resilience. Individuals with higher levels of benevolent childhood experiences (BCEs) and greater social support tend to exhibit enhanced self-efficacy, thereby potentially buffering the detrimental effects of childhood trauma. Furthermore, the perinatal period presents a critical juncture where maternal well-being significantly impacts both mother and child. The current study …

Examining The Effects Of Perceived Need, Suicidal Ideation, And Interpersonal Shame On Help-Seeking Attitudes In Asian Pacific Islander Desi Americans, Kristen Jiin Park

Electronic Theses and Dissertations

This study examined relationships among suicidal ideation, perceived need for mental health services, interpersonal shame, and help-seeking attitudes in a sample of APIDA adults (N = 175). Guided by Andersen's Socio-behavioral Model of Help- Seeking Behaviors (1968) and the Interpersonal Shame Inventory framework (Wong et al., 2014), the study investigated whether interpersonal shame moderated the relationships between suicidal ideation and help-seeking attitudes, and between perceived need and help-seeking attitudes. Participants completed an online survey assessing demographic and study variables. Results indicated that perceived need and gender were associated with more favorable mental health help-seeking attitudes among APIDA adults. These findings …

Effects Of Ankle Actuation On Stability And Gait Dynamics In Oscillatory Bipedal Walking, Guillermo E. Selva Barrantes

Electronic Theses and Dissertations

Bipedal locomotion remains one of the most challenging problems in robotics and biomechanical modeling due to its inherent instability, underactuation, and the complexity of human gait dynamics. This study presents the design and control of a planar bipedal walking model developed to analyze the role of ankle control in achieving stable and human-like walking patterns. Two configurations were investigated: a five-link point-foot model and a seven-link model that incorporates anatomically inspired feet with heel and toe contact points. Both models were formulated using Lagrangian dynamics and integrated with a compliant contact and friction model to reproduce realistic ground interaction forces. …

Becoming A Therapist In A Foreign Land: Narratives Of International Trainee Clinicians Of Color In The U.S., Prathma Sharma

Electronic Theses and Dissertations

The focus of this dissertation project is on the community of trainee clinicians of color, who have been consistently overlooked in the literature on mental health. This dissertation employed narrative analysis as a methodological framework to explore the experiences of international trainee clinicians of color as they navigated the complex landscape of mental health training in the United States. In an increasingly globalized world, the voices and perspectives of these individuals offered critical insights into the challenges, triumphs, and unique pathways that shaped their professional development. Much of the literature on diversity and inclusion tends to individualize the challenging experiences, …

"Help Me Live It The Way You Do": Grounding Singaporean Responses To The Rorschach Situation, Casey Y. Lee

Electronic Theses and Dissertations

Contemporary research on the Rorschach and culture is striking for the latter’s disappearance as a variable of significance (Meyer et al., 2015; Meyer et al., 2007; Mihura et al., 2013; Viglione & Hilsenroth, 2001). This erasure is chronicled and reproduced in the narratives of universal objectivity, of extensive international meta-analyses, of replications, of standardized norms (Ritzler, 2004; Smith et al., 2018; Smith et al., 2020; Weiner, 2004). A different story emerges, however, when we ask, how has culture disappeared? The proposed study is a multimethod qualitative analysis of Singaporean responses to the Rorschach, aimed at generating sensitive yet critical discourses …

Bridging The Gap: Documenting The Effectiveness Of Counseling Education In A Speech-Language Pathology Graduate Program, Gianna Baker

Electronic Theses and Dissertations

This study aimed to examine the impact of a required counseling course through Duquesne University's Speech-Language Pathology program, particularly regarding student’s counseling self-efficacy and their ability to apply counseling skills within clinical practice. Nineteen first year Master’s students in Speech-Language Pathology at Duquesne University during 2025 participated in this study while enrolled in a counseling course and providing therapy to clients. Students completed the Counselor Activity Self-Efficacy Scales for SLPs (CASES) (Victorino & Hinkle, 2019) prior to beginning and after completion of the required counseling course. While observing video-recorded therapy sessions, the Counselor Competencies Scale-Revised (CCS-R) (Lambie & Swank, 2024) …

Development Of Minimalist Trifunctional Building Blocks For Chemical Biology Probe Synthesis, Luke E. Bohrer

Electronic Theses and Dissertations

The completion of the Human Genome Project in 2003 generated expectations that genomic information would accelerate the discovery of new protein drug targets and FDA-approved therapies. However, many small-molecule drug candidates continue to fail in clinical trials, and much of the human proteome remains undercharacterized in terms of structure, function, and disease relevance. Chemical tools are therefore essential for defining protein function, mapping protein interactions, and identifying disease-associated molecular mechanisms. Among these tools, small-molecule chemical probes provide a powerful strategy for connecting biological activity with target identification, functional analysis, and the development of effective therapies.

This dissertation describes the development …

Impact Of Taped Problems Intervention Modification On Children With Deafness, Clyniece Hodge

Electronic Theses and Dissertations

Children with hearing loss are at an increased risk of experiencing setbacks in various areas of life, including academic performance and employment opportunities. Academically, they are likely to experience poor academic achievement in reading, as well as in mathematics (ASHA, 2013). In comparison to gifted hearing students and average-ability hearing students, students with hearing loss are at a higher risk of low mathematics performance (Hassan & Mohammed, 2019). Despite these known challenges and risk factors, limited research has been conducted to identify effective intervention strategies for improving mathematical outcomes among this population. As such, this study aimed to evaluate the …

Dialogic Communication Ethics As A Hopeful Response To Artificial Intelligence, Kristen Haldeman

Electronic Theses and Dissertations

Within the past five years, a new technology has dominated modern culture: artificial intelligence. With a multiplicity of ways to respond to this new environment, this dissertation situates a response to artificial intelligence by combining the media ecology and communication ethics perspectives. Media ecology explores historical roots and biases of technology to learn about their influence of humanity. A dialogic communication ethics seeks to find an opening for hope to emerge. Hope, grounded in the works of Jacques Ellul and the Christian tradition, offers a new rhetorical perspective by shifting focus away from technology and to our neighbor.

Integrating Naturalistic Developmental Behavioral Interventions In Inclusive Classrooms To Support Autistic Students, Paige J. Johnson

Electronic Theses and Dissertations

The current trend of an increasing prevalence rate of autism spectrum disorder creates a growing need for evidence-based interventions that can be accessed in the natural environments, such as within inclusive educational settings. Naturalistic Developmental Behavioral Interventions (NDBIs) integrate principles of applied behavior analysis and developmental psychology, and offer effective tools for increasing social communication behaviors in autistic children that align with the neurodiversity-affirming movement. The present study sought to evaluate the effectiveness of Behavior Skills Training (BST) in teaching core NDBI skills to a preschool teacher, examine changes in teacher self-efficacy related to supporting autistic students, and assess the …

A Mixed-Methods Pilot Study Of A 10-Week Wellness Program For Resident Assistants, Emily L. Lee-Chong

Electronic Theses and Dissertations

This mixed-methods pilot study used semi-structured interviews with 15 resident assistants (RAs), complemented by descriptive pre- and post-test data from the Five Factor Wellness Inventory (FFWEL), to explore their lived experiences of participating in a 10-week wellness program grounded in the Indivisible Self Model of Wellness (IS-WEL). The purpose of this study was to examine the program's perceived influence on wellness practices and to explore the feasibility of implementing wellness-focused programming. Using a hermeneutic inquiry approach, the study identified four themes reflecting participants’ experiences throughout the program. Themes highlighted the importance of self-awareness through the IS-WEL model, the value of …

Race And Trauma: An Analysis Of Trauma Symptomology Across Diverse Youth Populations, Mara J. Niccoli

Electronic Theses and Dissertations

The adverse effects of trauma, particularly among youth who identify as Black, is a critical issue. This study investigated the relationship between race and trauma symptomology among children and adolescents who received weekly trauma therapy. With the use of clinical assessment data, this study sought to determine whether Black youth presented to treatment with higher trauma acuity than non-Black youth and if there were disparate outcomes in symptomology after treatment. The results indicated that on average, Black youth presented to treatment with lower trauma acuity than non-Black youth, and there were disparate outcomes in trauma symptomology between the two racial …

A Philosophy Of Communication Response To Bullying In Corporate America, Chris A. Phillips Dr.

Electronic Theses and Dissertations

This philosophy of communication response to bullying in corporate America follows the structure of posing research questions, synthesizing relevant literature, and offering advice to practitioners. It invites the reader to have hope in continuing the conversation through a constructive hermeneutic approach to the problem. By building on literature in oppression, silencing, bullying, incivility, and communication ethics, this dissertation reveals how (rhetoric) and why (philosophy) the problem occurs in corporate America today. This dissertation offers a new angle to an old problem, or, a rhetoric and philosophy of bullying. It responds to the following questions:

RQ 1: As a destructive communication …

Between Care And Despair: An Existential Phenomenological Study Of Eco-Anxiety As Lived Experience, Conor H. Sukhdeo

Electronic Theses and Dissertations

This dissertation explores the lived experience of eco-anxiety among young adults aware of the ongoing ecological crisis but not directly exposed to climate-related disasters. Grounded in the human science tradition, ecopsychology, and existential phenomenology, this study employed Scott Churchill’s (2022) approach to Existential Phenomenological Research (EPR) to deepen our understanding of the phenomenon of eco-anxiety. Four participants, residing in Pittsburgh and aged 18-25, produced written experiential descriptions and participated in open-ended phenomenological interviews. As outlined by EPR, this data was analyzed through meaning unit delineation, imaginative variation, phenomenological reduction, and structural synthesis to produce individual situated structures of eco-anxiety for …

Experiences Of Novice Assistant Principals: Perceptual Evidence From Texas, Gregory Vidal

Electronic Theses and Dissertations

Assistant principals play essential roles in supporting instructional leadership and campus operations. However, limited research has examined how novice assistant principals experience their transition into administration and interpret their preparation and support. This study addressed the gap in understanding how novice assistant principals in a suburban Texas public school district made sense of their preservice preparation and early leadership practice, and how these experiences shaped their perceptions of training and organizational supports. The purpose of this qualitative, experiential, phenomenological study was to explore the lived experiences of novice assistant principals during their first three years in the role. The study …

Kindergarten Teachers’ Perceptions, Experiences, And Challenges Using Visual Supports For Children With Autism, Jasmine M. Mcnair

Electronic Theses and Dissertations

This qualitative case study examined kindergarten teachers’ perceptions, experiences, and challenges related to the use of visual supports for students with autism spectrum disorder in East Texas. Grounded in cognitive load theory, the study explored whether visual supports enhance learning outcomes by reducing cognitive overload. Four research questions addressed teachers’ perceptions of effectiveness, implementation challenges, the influence of teacher attitudes, and differences based on teaching experience. The researcher collected data through semistructured interviews with 10 kindergarten inclusion teachers and supplemented by classroom observations. Thematic analysis revealed five primary themes: emotional impact and student growth, visual supports as essential instructional tools, …

Modeling Mean And Variability Of Anxiety In Ecological Momentary Assessment Data Using Mixed-Effects Location–Scale Models, Trenzy Odero

Electronic Theses and Dissertations

Ecological Momentary Assessment is a method of collecting repeated measures of people in real time within natural environments. This results in hierarchical data that has a significant amount of variation at the person level. The traditional linear mixedeffects models assume that the residual variance is constant, which might not be true when the residual variance varies among individuals as well as in time. This thesis uses mixed-effects location-scale (MELS) models to model the mean and variance of an EMA outcome together. By introducing the possibility of variability in residual variance within and across individuals and with covariates, the MELS framework …