Digital Commons Network^™

“How Are High School Counselors Prioritizing The Information Relevant To Stem Career Preparation In Their Communication With Stem-Interested African American Students?”, Wysheka Austin

All Dissertations

Although African Americans and other minoritized groups have gradually increased in the number of students graduating with a Science, Technology, Engineering, and Mathematics (STEM) degree over the years, these groups remain underrepresented in STEM. Among the many factors contributing to the lack of representation is “college readiness,” which includes academic preparation and awareness of the necessary steps needed for college admission and career preparation [5]. South Carolina policy only considers academic preparation in their assessment of college readiness. To measure academic preparation of any student, the state relies on standardized test scores and advanced course taking without regard to subject. …

Novel Vector Assignment Approach For Inherent Strain Modeling Of Laser Powder Bed Fusion Manufacturing, Lucas M. Morand

All Dissertations

The expansion of the design space due to additive manufacturing (AM) has been a large motivator for the success of this family of processes. Despite the complexity of the physics in metal laser powder bed fusion AM causing significant stresses and strains in finished parts, the design advantages and subsequent performance improvements continue to drive the expansion of AM. Because the trial-and-error approach to AM part development is cost prohibitive, simulation of prints has become crucial. However, full thermo-mechanical simulation is susceptible to the same pitfall of time and computational cost in order to attain part-scale results. The development of …

Time Resolved X-Ray Spectroscopy Of Highly Charged Ar, Nd, And Pr, Timothy Burke

All Dissertations

Highly Charged Ions (HCIs) may be considered ideal mini-laboratory in which one can study the physics of matter and light in an environment of high internal electric field that can not be recreated with standard lab equipment. The remaining electron(s) exist in the extremely large electric field of the nucleus and therefore measurements of electronic transitions in these systems provide stringent tests of our understanding of physics in extreme conditions. Quantum electrodynamics (QED) despite being a powerful theory exhibits large discrepancies for systems under extreme conditions. The work here investigates the atomic properties within non-Maxwellian plasmas. The HCI plasmas studied …

Development Of Advanced Simulator-Based Metrics For Suturing Skills Assessment And Feedback, Simar Singh

All Dissertations

Vascular surgery demands highly skilled suturing to manipulate and connect delicate vasculature. However, inadequate methods for open suturing skills training necessitate efficient and objective methods to develop skills. To address this need, medical training simulators for objective surgical skills training are gaining popularity for their formative assessment.

This research details the development of a system to classify suturing performance and provide feedback on a suturing skills measurement and feedback platform (called the SutureCoach). The SutureCoach simulator offers a comprehensive assessment of skill through sensors measuring needle driver motions, membrane forces and torques, subcutaneous suture needle movement, and hand motions. We …

Mesenchymal Stromal Cell Response To Degenerated Intervertebral Disc-Like Ph, Kyle Cannon

All Dissertations

Intervertebral disc degeneration (IVDD) has become increasingly prevalent and is a common contributing factor to low back pain. There are currently no clinical treatment options for IVDD that alleviate the symptoms of IVDD while simultaneously promoting repair of IVD tissue. One treatment option being explored is intradiscal administration of mesenchymal stromal cells (MSCs). However, the microenvironment of the degenerating IVD places significant stress on both native IVD cells and implanted cells. There are several questions that need to be addressed which may help further inform the development of efficacious intradiscal MSC therapies for IVDD. These questions include: 1) Do MSCs …

Development Of Earthquake Hazard Prediction Software For South Carolina And Its Applications, Vishnu Saketh Jella

All Dissertations

This dissertation presents the development of earthquake hazard generation software, CarolinaShake and CarolinaADRS, for the state of South Carolina and its applications in the field of earthquake engineering. South Carolina is a seismically active state in the eastern United States, and there is a need to accurately quantify the earthquake hazard and incorporate it into the design of infrastructure systems. To achieve this objective, the South Carolina Department of Transportation (SCDOT) is actively supporting the initiatives to update its seismic design policies and procedures of civil infrastructure systems. As part of those initiatives, first, CarolinaShake, a Windows-based graphical user interface …

Identifying Temporomandibular Disorder Morphological Risk Factors Via Explainable Deep Learning And Multiscale Biomechanical Modeling, Shuchun Sun

All Dissertations

Clarifying multifactorial musculoskeletal disorder etiologies supports risk analysis and development of targeted prevention and treatment modalities. Deep learning enables comprehensive risk factor identification through systematic analysis of disease datasets but does not provide sufficient context for mechanistic understanding, limiting clinical applicability for etiological investigations. Conversely, multiscale biomechanical modeling can evaluate mechanistic etiology within the relevant biomechanical and physiological context. We propose a hybrid approach combining 3D explainable deep learning and multiscale biomechanical modeling; we applied this approach to investigate temporomandibular joint (TMJ) disorder etiology by systematically identifying risk factors and elucidating mechanistic relationships between risk factors and TMJ biomechanics and …

The Impact Of Mixed-Reality Simulation On The Knowledge And Practice Of Collaboration Skills Of Preservice Special Education Teachers, Samantha Scott

All Dissertations

Collaboration is an essential skill for a special education teacher's (SETs) success in developing individualized education programs (IEPs) to ensure that students with disabilities have access to equal educational opportunities. Collaboration occurs when members of an inclusive learning community work together as equals to meet a student’s individual needs. Unfortunately, preservice SETs are often provided with little instruction during their coursework and are not given the opportunity to attend IEP meetings in field placements. Many teacher education programs provide only a select number of opportunities for preservice SETs to practice and apply collaboration skills, leaving teacher candidates feeling underprepared to …

Selected Topics On Sequential Designs For Decision Making, Caroline Kerfonta

All Dissertations

This dissertation is comprised of three parts. The first proposes a sequential approach to determine the experimental setting with the minimum variance (Kerfonta et al., 2024). Two acquisition functions are developed to assist developing the approach. Theoretical results along with a case study using data from crystallization experiments is conducted to show the ability of the proposed method to correctly select the experiment with the minimum variance. The second and third parts propose adaptations to the Bayesian optimization algorithm using transformed additive Gaussian processes (TAG) as the surrogate model. The goal of using the TAG framework is to decompose the …

Leaders In Science Education Communities, Jennifer Bateman

All Dissertations

This three paper dissertation investigates the role of the District Science Coordinator (DSC). Due to the lack of research, District Science Coordinators (DSCs) are frequently misidentified as Science Teacher Leaders (STLs). It is important to establish a clear distinction between the roles. This first paper explores the salient similarities and differences between STLs and DSCs, while also attending to their individual roles, responsibilities, and professional support.

This second paper examines how a synchronous, online professional learning (PL) experience resulted in the creation of a community of practice (CoP) among two different groups of participating district science coordinators (DSCs) and how …

Oscillations Of Capillary Surfaces With Volume And Edge Effects, Dingqian Ding

All Dissertations

Capillary surfaces are defined by an interface endowed with surface tension that is partially supported by a solid substrate and are susceptible to oscillations reflecting a balance between fluid inertia and the restorative force of surface tension. The wave dynamics strongly depend upon volume change within the domain and edge effects through the boundary conditions applied at the contact-line formed at the liquid-gas-solid interface, while the spatial wave structure conforms to the geometry of the capillary surface. This dissertation develops mathematical models to address these effects for several canonical capillary surfaces, which are organized into two parts that are focused …

Understanding The Experiences Of Para-Collegiate Student- Athletes: A Mixed Methods Study, Derek Whaley

All Dissertations

Experiences are the impressions developed through gaining, using, fostering, and sometimes disposing of a service or product. Recent years have shown an ongoing emphasis placed on experiences and their impacts; one of particular interest for this study are the experiences of para-collegiate student-athletes. Using the Experience Type Framework (ETF) and the Extraordinary Impact Scale (EIS), the purpose of this study was to understand the experience of involvement in intercollegiate sports among adaptive student-athletes. This study employed an explanatory sequential mixed methods design, using quantitative and qualitative data to understand the adaptive student-athlete experience. Phase I (n = 30) used the …

Restoring Student Behavior: A Culturally Responsive Evaluation Of Restorative Practices On Disproportionate Referral Data, Meredith Strmac

All Dissertations

Male students of color often receive harsher disciplinary consequences than their same age White peers. Disproportionate discipline practices have existed within the education system for years, primarily due to a historical systemic issue of implicit bias due to race. One intervention used to quell some of these disparities is Restorative Practices. This program evaluation study used Restorative Practices as an intervention to determine the extent that it could close the discipline gap in one South Carolina high school. Using a concurrent nested mixed method design, I analyzed and synthesized historical agency data to answer the first research question regarding the …

Robust And Trustworthy Deep Learning: Attacks, Defenses And Designs, Bingyin Zhao

All Dissertations

Deep neural networks (DNNs) have achieved unprecedented success in many fields. However, robustness and trustworthiness have become emerging concerns since DNNs are vulnerable to various attacks and susceptible to data distributional shifts. Attacks such as data poisoning and out-of-distribution scenarios such as natural corruption significantly undermine the performance and robustness of DNNs in model training and inference and impose uncertainty and insecurity on the deployment in real-world applications. Thus, it is crucial to investigate threats and challenges against deep neural networks, develop corresponding countermeasures, and dig into design tactics to secure their safety and reliability. The works investigated in this …

Experimental Analyses Of Emission Lines In The Uv/Vis/Nir Range For Astrophysically-Important Elements: From The Iron Group To R-Process Elements, Brynna Neff

All Dissertations

Analysis of astrophysical phenomena requires an understanding of the electronic

structure and transition probabilities of the elements present in that environment,

yet there are still many charge states of heavy elements whose electronic

structures and spectroscopic properties are not yet well understood. To address this,

we investigated the spectroscopic properties of three different elements through an

analysis of spectra collected from three different experimental apparatuses.

In order to better understand the spectroscopic properties of Ni I and II, we

analyzed spectra collected from the Compact Toroidal Hybrid (CTH) apparatus at

Auburn University. In this experiment, a nickel sample was inserted …

Connecting Genotype And Phenotype: Investigating The Functional Morphology And Molecular Architecture That Influences Craniofacial Divergence Using Lake Malawi Cichlid Fishes, Leah Delorenzo

All Dissertations

Connecting genotype and phenotype to better understand how species evolve has been a goal of evolutionary developmental biologists over the last 50 years. This dissertation aims to connect genotype and phenotype of the craniofacial skeleton within the adaptive radiation of Lake Malawi cichlids to fortify our understanding of the functional, genetic, and epigenetic factors that contribute to craniofacial divergence. I start with a functional approach using 2D geometric morphometrics to assess craniofacial shape across the Lake Malawi cichlid radiation to bolster our knowledge of the bone phenotypes that are important to niche specialization and are functionally relevant. Next, I use …

Carbon "Quantum" Dots: Structures, Properties, And Issues, Weixiong Liang

All Dissertations

Carbon dots (CDots) are small carbon nanoparticles (CNPs) with effective surface passivation. The effective passivation has been achieved by the surface functionalization of pre-existing CNPs with organic molecules, mostly molecules containing primary or secondary amine moieties. In the studies highlighted in this dissertation, CNPs were functionalized by selected organic molecules, including especially the use of radical addition reactions, to generate CDots with strong absorption and bright fluorescence emissions. A good demonstration of the approach was the N-ethylcarbazole (NEC) radical addition to CNPs under microwave irradiation. Spectroscopy and microscopy methods were employed to characterize the resulting NEC-CDots, and the results …

Structural Changes After Coming Out In A Christian Family, Ying Zou

Electronic Theses and Dissertations

Over the last decade, societal attention towards the LGBTQ community has grown significantly through social media and political movements. While research indicates increased acceptance and awareness, LGBTQ individuals and their families still face challenges, with “coming out” being a pivotal and ongoing difficulty. This study adopts a structural family therapy lens to investigate how the process of coming out impacts family dynamics, boundaries, and roles within Christian families. Existing literature underscores the role of religion, particularly Christianity, in causing stress for LGBTQ individuals. Although some families initially react negatively to disclosure, many eventually report improvement. However, there is limited research …

Cabinet-Level School Administrators Intragroup And Intergroup Identity And Positive Leader-Member Exchange Dynamics: A Single Case Study, Larry R. Berger

Electronic Theses and Dissertations

This qualitative case study explored the challenges faced by the cabinet-level administration of a South Texas K-12 public school district in navigating intragroup and intergroup identity dynamics, impacting leader-member exchange, follower obligation, organizational behavior, and citizenship. Poor integration led to silo mentalities due to a lack of communication skills and social identity awareness among leadership. The study explored the influence of leaders’ attitudes and behaviors on intergroup and intragroup identities by examining how positive leader-member exchange practices affected collective organizational behaviors. Employing the framework of social identity theory, this study contributed to understanding specific leadership domains and the effective motivation …

Teacher Attrition: A Quantitative Analysis Of Driving Factors And Potential Solutions Among Highly Qualified K-12 U.S. Public School Teachers, Shari Donch

Electronic Theses and Dissertations

A comprehensive analysis is necessary to determine the cause of and solutions for the rate of K12 teacher attrition in the United States. Researchers have sought to understand the root causes of attrition or the institutional factors that influence teachers to voluntarily change professions. The most frequently identified factors include the personal characteristics of these teachers, freedom of curriculum development, teacher autonomy, and resources such as salaries. Evidence shows that this attrition among highly qualified teachers is detrimental to the quality of education, particularly in terms of student outcomes, and substantiates that effective initiatives surrounding remediation of these factors are …

A Phenomenological Study On The Lived Experiences Of Black Male Faculty At Predominantly White Institutions (Pwis) In Texas And Louisiana, Christopher Allen Frazier

Electronic Theses and Dissertations

The purpose of this transcendental phenomenological study was to gain more clarity and insight into a distinctive phenomenon of the lived experiences of five African American male professionals in predominantly White institutions in Texas while seeking tenure and promotion. Using interviews throughout the duration of the study allowed the phenomenological inquiry to gain better insight from a personal lens while hoping to find the true essence of the phenomenon. All participants in this inquiry were African American male professionals who served in educational roles and had at least 3 years’ experience serving in a predominantly White institution in Texas. This …

Exploring Influencing Factors On The Adoption Of Non-Pharmaceutical Interventions During Pandemics: Covid-19 As An Example., Ahmed Abdulmohsen I Alobaydullah

Electronic Theses and Dissertations

Background: Pandemics are associated with loss of life, hospitalizations, and disruption to people’s social and economic lives. As the 2019 pandemic illustrates, COVID-19 can be prevented by pharmaceutical and non-pharmaceutical interventions (NPIs). Recommended measures such as wearing a mask, washing hands, social distancing, and self-quarantine have been proven to curb the spread of the coronavirus. Identifying the factors associated with adherence to NPIs is the first step in understanding which levers of change to pull when designing health promotion interventions such as health communication campaigns. This dissertation explores these factors and proposes a health communication framework during pandemics. Research Questions: …

As The Night Is Lit: The Nocturnal Urban Landscapes Of Childe Hassam., Diana M. Wilder

Electronic Theses and Dissertations

The scientific investigations into light that began with the Enlightenment garnered added information useful for artists. To depict the changes in light due to weather, time of day, and season more accurately, artists took the information reaped from studies of the refraction of light gained from Isaac Newton’s color theories. The new technological advances of gaslight and electric arc lighting also changed the way that light was represented on canvas. Artists were now able to paint in their ateliers due to modern lighting that would light up the rooms like the day. Some artists decided to explore the night and …

Predicting The Effects Of Precipitation On Groundwater Contamination Near Capped And Uncapped Coal Ash Storage Facilities In Louisville, Kentucky., Daryl Jialiang Chen

Electronic Theses and Dissertations

This study examines the impact of rainfall event characteristics and water table elevations on arsenic and boron contamination in groundwater near two coal ash ponds in Louisville, Kentucky. Utilizing data from 2011 to 2019, the research focuses on both capped and uncapped ponds at Mill Creek and Cane Run sites, employing Threshold Analysis, Regularized Discriminant Analysis (RDA) and Random Forest (RF) to assess contamination levels in groundwater. Analysis shows that capped ponds generally exhibit reduced arsenic levels, though variations exist depending on the contaminant and site. Key predictors such as maximum precipitation and river height were identified, highlighting their significant …

Adding Texture Through Historical Research: Using Dramaturgy To Aid In The Creation Of Elizabeth (Bess) Borney., Nyazia Brittany Martin

Electronic Theses and Dissertations

This thesis follows my work with the production The Old Settler by John Henry Redwood. This document explores my process as an actor, and how I decided to capitalize on an opportunity to study Dramaturgy and apply what I learned to my actors' process. In the pages of this thesis I present the pieces of my process, including my vocal and movement work based in Laban and Alexander Technique. I give personal examples of how my dive into dramaturgical work positively affected how I crafted the role of Elizabeth (Bess) Borney. I also detail the transition out of my work …

Relationships Between Fitness Levels, Physical Activity Participation, Hemoglobin A1c Levels, And Motor Proficiency In Adolescent Patients With Type 1 Diabetes., Caroline E. Frye

Electronic Theses and Dissertations

Physical activity is a critical component of a healthy lifestyle and can lead to improved fitness levels and blood glucose management, as well as decreased HbA1c levels. PURPOSE: The purpose of this study was to determine if there are relationships between cardiorespiratory fitness, muscular strength, muscular endurance, flexibility, body composition, physical activity participation, hemoglobin A1C levels, and motor proficiency in adolescent patients with T1D. METHODS: Pediatric patients with a diagnosis of T1D enrolled in a sports medicine program were invited to participate in this study. Retrospective clinical chart reviews were conducted to determine participant’s sociodemographic and anthropometric measures and most …

Adapting Language Development Research Paradigms To Online Testing: Data From Preferential Looking, Word Learning And Vocabulary Assessment In Toddlers, Delphine K.L. Nguyen, Nadine Fitzpatrick, Caroline Floccia

School of Psychology

During the recent pandemic, it became necessary to adapt lab-based studies to online experiments. To investigate the impact of online testing on the quality of data, we focus on three paradigms widely used in infant research: a word recognition task using the Intermodal Preferential Looking Paradigm, a word learning task using the Switch task, and a language assessment tool (WinG) where children identify a target word amongst a set of picture cards. Our results for synchronous and asynchronous studies provide support for the robustness of online testing. In Experiment 1, robust word recognition was found in 24-month-old toddlers. In Experiment …

An Investigation Into The Structural Features That Control Factor Xiii Stability And Substrate Specificity., Rameesa Darul Amne Syed Mohammed

Electronic Theses and Dissertations

Factor XIII (FXIII) is a transglutaminase enzyme with multiple physiological roles that is found in plasma and cells of bone marrow origin. The catalytic A subunit (FXIII-A) is made of an N-terminal activation peptide (AP), β-sandwich, catalytic core, and two β-barrel domains. FXIII crosslinks the sidechains of glutamine (Q) and lysine (K) residues across plasmatic and cellular substrates. Because of its involvement in clot stabilization and determining fibrin clot size, FXIII-A is regarded as a target for developing new anticoagulants with minimal bleeding risks. However, the FXIII-A structural features that control its stability and substrate specificity largely remain unknown. Plasma …

Preventing The Violent (Re)Victimization Of Sexual Minority Populations: The Role Of Social Support Networks., Bryan Charles Moore

Electronic Theses and Dissertations

Every year, interpersonal violence affects an important segment of the world population, having deleterious effects on the victims, their families, and societies. Recent scholarship indicates that sexual and gender minority population groups are overrepresented among those who experience or have experienced verbal, psychological, physical, and/or sexual violence. Using an integrative approach, the current study links the past and the present to identify the contextual factors that may increase or decrease the sexual minorities’ risk of violent victimization during adulthood. This dissertation uses as a theoretical framework Bronfenbrenner’s (1977, 1979, 1994) social ecological model of human development as well as its …

Primary Focal Segmental Glomerulosclerosis In A Patient With Ankylosing Spondylitis: A Rare Presentation Requiring A Broad Differential In Nephrotic Syndrome., Pooya Zardoost, Sana Tyabuddin, Austin Cantu, Musa Abu-Jubara, Jackson Mittlesteadt, Henry Wehrum

Ambulatory and Primary Care Articles

Ankylosing spondylitis (AS) presents with renal failure and proteinuria in a minority of cases, usually due to secondary amyloidosis or IgA nephropathy. While focal segmental glomerulosclerosis (FSGS) is less common, it should still be in the differential regardless of the patient's clinical profile.