Digital Commons Network^™

The Impact Of Economic Stability On Diagnostic Timing Of Autism Spectrum Disorder In Children, Leslie Box Simms

ETDs from 2020-2029

Diagnosis of neurodevelopmental delays in children, including autism spectrum disorder, is an often lengthy and burdensome process, potentially placing children with economic instability at risk for diagnostic delay. The first aim of this dissertation was to explore the impact of economic stability on diagnostic timing of autism spectrum disorder via a scoping review of the literature. Papers were summarized by study design, data sourcing, handling of variables, statistical methodology, and the effect of economic stability factors on diagnostic timing of autism. Income and healthcare insurance were the most frequently employed measures of economic stability, with transportation, housing, and food security …

Aging Like A Pro: Altering Health Behavior Motivation Through Community Education Programs, Susan Eva Fox-Rosellini

ETDs from 2020-2029

ABSTRACT Population aging presents significant public health challenges, particularly in preventing cognitive decline and maintaining functional independence among older adults. Today in the United States, the National Institutes of Health (NIH) estimates that about 40% of people aged 65 or older have age-associated memory issues. That number is expected to more than double by 2060. Community-based education programs can represent a scalable strategy to influence behavior modification that may be linked to successful cognitive aging. This dissertation evaluated the Aging Like A Pro (ALP) community education program that focused on key aspects of health: sleep, mindfulness, nutrition, and fitness, encouraging …

Elucidating The Role Of The Rnf20 Histone Modifier In Pancreatic Beta Cells, Tanya Hans Pierre

ETDs from 2020-2029

Diabetes is defined as a loss of functional beta cell mass. It is classically categorized into Type 1 Diabetes (T1D), immune-mediated beta cell destruction and Type 2 Diabetes, which is characterized by whole body insulin resistance alongside beta cell dysregulation. The incidence of diabetes worldwide has risen annually. Despite the presence of therapeutic interventions, diabetes’ heterogeneity can prompt ineffective glycemic control and the development of diabetes-associated comorbidities. For that reason, new approaches to glycemic control for individuals with diabetes are required. One approach to restore glucose homeostasis is beta cell replacement therapy, in which stem cells are programmed into beta-like …

Exploring Medical Mistrust In A Higher Education Context: A Mixed Methods Study, Kiera Denise Walker

ETDs from 2020-2029

Medical mistrust, a type of institutional distrust, has been identified as a social determinant of health and a barrier to utilization of healthcare services. It has been negatively associated with preventive disease screenings, vaccine hesitancy, medication adherence, organ donation, research participation, and overall lower healthcare satisfaction. This can result in a widening of health disparities, an increase in prevalence of preventable diseases, and negative health outcomes despite accessibility to healthcare. The purpose of this study is to assess how medical mistrust manifests across the higher education context and explore what factors contribute to its existence among this population. An explanatory …

Characterizing The Role Of The Paraventricular Nucleus Of The Thalamus D2r+ Neurons In Interoceptive Predictions, Briana Machen

ETDs from 2020-2029

Interoceptive predictions are internal models through which the brain anticipates future bodily states based on past experiences and environmental cues. Under healthy conditions, these predictions allow organisms to anticipate physiological needs and proactively adjust behavior to maintain homeostasis. When these processes become dysregulated, however, environmental cues can trigger maladaptive physiological responses. Although interoceptive prediction is increasingly recognized as a key mechanism underlying adaptive behavior, the neuronal circuits responsible for generating these predictions remain poorly understood. The paraventricular nucleus of the thalamus (PVT) receives convergent inputs from brain regions involved in processing both interoceptive signals and exteroceptive cues, positioning it to …

The Association Of Motherhood And Maternal-Related Life Events And Cardiovascular-Related Health, Disease Events, And Mortality, Taishayla Mckitt

ETDs from 2020-2029

More than 40% of U.S. women have cardiovascular disease (CVD), and nearly half have at least one major risk factor. Sparse evidence exists related to the role of childrearing (regardless of prior pregnancy) on CVD. A recent literature review highlighted the influence of reproduction on CVD and health and identified opportunities for advancement. At present, it has yet to be discovered from prospective epidemiologic studies the extent to which parenting and maternal events have influence on cardiovascular health and clinical events. It has been demonstrated that parous women have greater prevalence of cardiovascular risk factors (e.g., short sleep duration and …

Balancing Act: How Graduate Student Mothers Navigate Dual Roles, Jessica Seymour

ETDs from 2020-2029

Graduate student mothers represent a growing but often overlooked population within higher education. While research has examined the experiences of undergraduate student parents, significantly less attention has been given to graduate students who balance academic responsibilities with motherhood. This study explores the experiences of graduate student mothers enrolled at public four-year institutions, focusing on the institutional, financial, and social barriers that shape their academic success and participation in campus life. Using a phenomenological approach, this research seeks to understand how graduate student mothers navigate the dual roles of parenting and pursuing advanced degrees. The study employs a Borderland Theoretical Framework …

Exploring The Association Between Social Media Use Frequency And Violence-Related Behaviors Among U.S. High School Students: A Cross-Sectional Analysis Of The 2023 Youth Risk Behavior Survey, Luma Hammoudi

ETDs from 2020-2029

Youth violence remains a major public health concern in the United States (U.S.), with firearm injuries now the leading cause of death among children and adolescents. At the same time, social media use has become nearly universal among youth, raising concerns about how online interactions may influence violence-related behaviors. Social media platforms can facilitate peer conflict, electronic bullying, and public exposure to aggressive behaviors, which may extend into offline environments such as schools and communities. However, the relationship between social media use frequency and youth violence remains understudied. This study examined the relationship between frequency of social media use and …

Resisting The Neoliberal Postfeminist Sexual Objectification Matrix: A Critical Autoethnography Exploring Sexual Objectification, Mental Health, Relationship To Self, And Reclaiming Subjectivity, Ildiko Archer

ETDs from 2020-2029

Over the past two decades, women’s subjectivity and sexual experience have been dramatically reshaped by the rise of dating apps, the normalization of hookup culture, the popularization of BDSM, and the dominance of neoliberal postfeminist sexual discourses. In the South, this all unfolds in the lingering residues of purity culture, creating a perfect storm of sexual objectification. This autoethnographic dissertation examines a defining period of my life shaped by the mental health consequences of sexual objectification and self-objectification. During this time, I experienced two brief marriages, many sexual relationships, posed on social media, dating apps, sexted, and performed sexual ‘agency’, …

Electrophysiological Retinal Changes In Aging And Its Implication In Alzheimer’S Disease, Samuel Jacob Haskins

ETDs from 2020-2029

Alzheimer’s disease remains one of the most expensive and fatal diseases facing medical practitioners to this day. According to the CDC, statistics show that it is the seventh leading cause of death worldwide. In addition to fatalities, there is a tremendous financial and emotional cost of dementia to the patient and surrounding caregivers. Improved screening techniques and new treatments for this disease are a priority of several institutes within the NIH. Early detection and early intervention are critical to improve the outcomes of patients worldwide. Amyloid beta plaques and neurofibrillary tangles (NFT) are two of the most important protein aggregates …

Comparative Evaluation Of Translucency, Fluorescence, And Structural Analysis Of 3d-Printed Vs. Conventionally Fabricated 3y, 4y And 5y Zirconia, Surabhi Chhabra

ETDs from 2020-2029

Statement of Problem: Additive manufacturing has emerged as an alternative to conventional milling for zirconia-based dental restorations because of its potential to reduce material waste and increase design flexibility. However, whether 3D-printed zirconia can provide optical and structural properties comparable with those of conventionally milled zirconia for esthetic applications remains unclear. Purpose: The purpose of this in vitro study was to compare the optical properties of 3D-printed zirconia and conventionally milled 3Y, 4Y, and 5Y zirconia, as measured by translucency and fluorescence, and to evaluate their structural characteristics, as measured by density, porosity, phase composition, and surface morphology. Materials and …

Bridging Gaps In Federally Qualified Health Centers: Examining Enabling Services And Their Role On Care Delivery, Shanequa Roscoe-Nelson

ETDs from 2020-2029

Federally Qualified Health Centers (FQHCs) are a vital provider of comprehensive healthcare for vulnerable and underserved communities. They serve populations that are disproportionately impacted by chronic health conditions and socioeconomic related barriers to healthcare. To provide adequate support and reduce barriers faced by patients, some FQHCs deliver not only primary and preventative care but also a range of enabling services. These enabling services range from providing transportation to health education and case management. This dissertation includes three studies that examine how environmental conditions are related to the use of enabling services in FQHCs, the relationship between enabling services and process …

How Did We Get Here? Mental Health Accessibility For Adults In Alabama, 1819-Present, Juliana Sea

ETDs from 2020-2029

Alabama remains one of the worst states in the nation for adult mental health access despite decades of reform and explicit commitments to improving care. Framing access as the ability to recognize need, locate services, reach them, enter care in a reasonable time, and continue or adjust care, this mixed-methods, three-paper dissertation examines how Alabama’s adult mental health system structures those pathways and how adults and providers navigate its constraints. It argues that inadequate access in Alabama contributes not only to suicide, psychiatric hospitalization, and disability, but also to shortened lifespan in the context of high burdens of chronic disease, …

Recognizing Patients In Places: A Multilevel Analysis Of Severe Heat-Related Illness Risk In Birmingham, Al, Andria Cimino

ETDs from 2020-2029

Socially marginalized people face a higher risk of adverse health outcomes from extreme heat—as many as 12,000 U.S. deaths a year are attributable to heat-related illness (HRI), a preventable but multifactorial condition. Where one lives plays a critical role in HRI incidence, with evidence linking historically segregated and disinvested urban environments to a higher risk. The literature also suggests that Black adults experience worse HRI outcomes than non-Hispanic White adults, and that men are often, though not always, at higher risk than women. Individuals with heat-sensitive conditions and socially isolated adults also face elevated risk. Yet the mechanisms by which …

Protein Glycosylation In Natural And Synthetic Minimal Genome Mycoplasmas, John Sanford

ETDs from 2020-2029

Mycoplasmas are cell wall-less bacterial symbionts with remarkably streamlined genomes. Mycoplasmas offer two intriguing model organisms for studying concepts of minimal life. Mycoplasma genitalium has streamlined its genome to 580-kbp while maintaining virulence to suit its niche of parasitizing the human urogenital tract. The J. Craig Venter Institute has synthesized and transplanted a 543-kbp genome into a recipient cell, resulting in a non-pathogenic organism termed JCVI-syn3A. The conservation of a biological process in M. genitalium and JCVI-syn3A strongly implies an essential function in mycoplasmas, and potentially all life. Despite common thought of mycoplasmas being the simplest cells, much of their …

An Examination Of Physical Activity And Arterial Stiffness Among Urban And Rural Older Adults, Michael J. Hankes

ETDs from 2020-2029

Rural populations in the United States experience a disproportionate burden of cardiovas-cular disease, yet how rural‑urban context shapes physical activity (PA) and vascular health is not fully understood. Because vascular dysfunction links PA to cardiovascular risk, rural‑urban differences in movement may help explain disparities in cardiovascular health. Rurality is often treated as a static, binary exposure, which may obscure meaning-ful geographic variation and accumulated life course influences. The overarching goal of this dissertation was to examine associations among rural‑urban exposure, objectively measured PA, and vascular health using national cohort data and a pilot study. This dissertation begins with a conceptual …

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Suds & Smiles: Empowering Confidence Through Hygiene Education, Yarkara Calhoun, Mikayla Cosby, Alona Johnson, Harmony Ware

Expo Student Presentations

2026 Spring Expo Poster Presentation

• Service-Learning