Digital Commons Network^™

Security Vulnerabilities And Defense Tactics For Generative Ai Application Development, Kyle Klein

University Honors Theses

Generative AI (GenAI) applications such as OpenAI's ChatGPT leverage large language models (LLMs) trained on enormous amounts of data to accomplish tasks such as document editing, summarization, and query response. Chatbots and LLM programs that are equipped with retrieval-augmented generation (RAG) have the ability to draw upon data provided by developers and users to improve the quality of the program's responses. LLM technology has even expanded to generate images, audio, and video from user instructions. Designed around unpredictable user input and typically composed of many opaque components, LLM software products face a paradigm shift of new, constantly evolving security challenges. …

A Capstone Review: Strategic Solutions For A Small Macrame Business, Jenna Sarieddine

University Honors Theses

This essay presents an overview of the Business Capstone project, focusing on a macramé business currently facing a $10,000 debt due to limited marketing and financial management skills. The purpose of the project is to support the business in developing an effective elevator pitch, improving its social media presence, strengthening its financial statements, and enhancing both personal and business financial practices. The essay explores the company's strengths, weaknesses, opportunities, and threats, as well as the team's collaborative approach to addressing these challenges. It outlines the goals established for the company, the strategies selected based on our academic backgrounds and business …

Enhancing Provider Knowledge And Implementation Of Medication For Opioid Use Disorder (Moud) To Improve Treatment Outcomes: A Quality Improvement Project., Motunrayo Abigael Ibraheem

Electronic Theses and Dissertations 2020 - Present

This quality improvement project sought to enhance healthcare providers' knowledge and attitudes toward Medication for Opioid Use Disorder (MOUD) at Galt Ocean Rehab Center to improve treatment outcomes for patients with opioid use disorder. Despite evidence supporting the efficacy of MOUD, significant knowledge gaps and stigmatizing attitudes among providers create barriers to optimal care. Sixteen healthcare providers participated in a comprehensive educational intervention grounded in Jean Watson's Theory of Transpersonal Caring and the Institute for Healthcare Improvement's Model for Improvement. The intervention consisted of a 4-hour workshop, six weekly reinforcement sessions, and the implementation of standardized buprenorphine management protocols. Pre- …

Heartmath: A Stress Reduction Program For Healthcare Providers In An Addiction Treatment Setting, Dihana C. Ruiz

Electronic Theses and Dissertations 2020 - Present

Work-related stress significantly impacts the well-being of healthcare providers, specifically nurses and nurse practitioners, in addiction treatment facilities. This Quality Improvement (QI) project implemented the HeartMath Quick Coherence Technique to reduce stress and enhance resilience among staff, thereby improving the well-being of healthcare providers and the quality of care. The project utilized a pre- and post-intervention design with five participants, two registered nurses, and three nurse practitioners. Participants received training on HeartMath techniques, the EmWave Pro sensor, and the InnerBalance smartphone application. Over a six-week period, participants practiced Quick Coherence meditation for five minutes, twice daily, to achieve heart rate …

An Attack-Centric Approach To Security, Privacy, And Legal Challenges In Virtual Healthcare, Suvineetha Herath

Masters Theses & Doctoral Dissertations

As the U.S. healthcare sector continues to evolve, the adoption of virtual care delivery systems has expanded rapidly. This digital transformation has intensified concerns regarding the security and privacy of Protected Health Information (PHI). To address these challenges, this study employed a sequential, exploratory mixed-methods approach to examine the evolving threat landscape and to develop an attack-centric threat model for virtual healthcare environments. In the first phase, a qualitative analysis of regulatory enforcement and legal effectiveness was conducted to examine compliance gaps, privacy risks, and legal consequences within virtual healthcare systems. Building on the qualitative findings, the second phase quantitatively …

Left And Right Ventricular Strain Mechanics In Fetal Tachyarrhythmia., Rukmini Komarlu, Janelle R. Noel-Macdonnell Phd, Neha Chellu, Geetha Haligheri

Manuscripts, Articles, Book Chapters and Other Papers

Introduction: Assessment of myocardial function in fetuses with supraventricular tachyarrhythmia is challenging. Speckle-tracking echocardiography (STE) is a newer sensitive method to assess ventricular systolic function. We sought to assess left (LV) and right (RV) ventricular myocardial strain mechanics in fetuses with tachyarrhythmia and hypothesized that strain mechanics are impaired in this patient population even after conversion to sinus rhythm.

METHODS: This was a single-center retrospective review. LV and RV strain parameters were assessed using STE in tachyarrhythmia and after conversion to sinus rhythm and, compared to gestational age (GA), matched control fetuses in sinus rhythm.

RESULTS: Eighteen fetuses with tachyarrhythmia …

Differential Microrna Profiling Of Blood L1cam And Bulk Extracellular Vesicles In Bipolar Disorder, Gabriel R Fries, Salahudeen Mirza, Jun Wang, Camila N C Lima, Wei Zhang, Marcela Carbajal Tamez, Giselli Scaini, Jair C Soares, Joao Quevedo

Faculty, Staff and Student Publications

Objective: This preliminary study aimed to identify microRNA (miRNA) signatures associated with bipolar disorder (BD) by profiling blood-derived extracellular vesicles (EVs) of both putative neuronal origin and from all sources.

Method: In two parallel studies of individuals with BD and controls (CON), we characterized miRNA expression profiles of blood EVs selected for L1CAM, a putative marker of neuronal origin (n = 20 BD/20 CON), as well as bulk EVs (n = 21 BD/20 CON). For each study, analyses identified miRNAs differentially expressed between groups, followed by functional interrogation and testing for associations with clinical features.

Results: Results of …

Ataxia-Telangiectasia Mutated Activation Mediates Transforming Growth Factor Beta Signaling In Acetaminophen-Induced Liver Injury In Mice, Matthew Mcmillin, Christopher S Chu, Elaina Williams, Juliet Venter, Kiersten Bell, Anca D Petrescu, Patrick Mireles, Sharon Demorrow

Faculty and Staff Publications

Acetaminophen (APAP) overdose is associated with increased transforming growth factor beta 1 (TGFβ1) signaling and elevated oxidative stress, which exacerbate DNA damage. TGFβ1 has been shown to regulate ataxia-telangiectasia mutated (ATM) signaling and DNA repair in other cell types. This study investigates the DNA damage response (DDR) during APAP-induced liver injury, focusing on ATM-mediated regulation of TGFβ1 signaling. APAP administration in vitro and in vivo resulted in DNA damage, increased ATM signaling, accumulation of γH2AX, and activation of phosphorylated ataxia telangiectasia mutated (pATM) and phosphorylated checkpoint kinase 2 (pChk2). Pretreatment with an ATM inhibitor, KU55933, attenuated APAP-induced hepatocyte damage and …

Loss Of The Lysosomal Protein Cln3 Triggers C-Abl-Dependent Yap1 Pro-Apoptotic Signaling, Neuza Domingues, Alessia Calcagni', Sofia Freire, Joana Pires, Ricardo Casqueiro, Ivan L Salazar, Niculin Joachim Herz, Tuong Huynh, Katarzyna Wieciorek, Tiago Fleming Outeiro, Henrique Girão, Ira Milosevic, Andrea Ballabio, Nuno Raimundo

Duncan NRI Faculty and Staff Publications

Batten disease is characterized by early-onset blindness, juvenile dementia and death within the second decade of life. The most common genetic cause are mutations in CLN3, encoding a lysosomal protein. Currently, no therapies targeting disease progression are available, largely because its molecular mechanisms remain poorly understood. To understand how CLN3 loss affects cellular signaling, we generated human CLN3 knock-out cells (CLN3-KO) and performed RNA-seq analysis. Our multi-dimensional analysis reveals the transcriptional regulator YAP1 as a key factor in remodeling the transcriptome in CLN3-KO cells. YAP1-mediated pro-apoptotic signaling is also increased as a consequence of CLN3 functional loss in retinal pigment …

Protocol For Visual-Acoustic Intervention With Service Delivery In-Person And Via Telepractice (Visit) Non-Inferiority Trial For Residual Speech Sound Disorder, Tara Mcallister, Jonathan L. Preston, Elaine R. Hitchcock, Nina R. Benway, Jennifer Hill

Department of Communication Sciences and Disorders Faculty Scholarship and Creative Works

Background: Residual speech sound disorder (RSSD) is a high-prevalence condition that negatively impacts social and academic participation. Telepractice service delivery has the potential to expand access to technology-enhanced intervention methods that can help remediate RSSD, but it is not known whether remote service delivery is associated with a reduction in the efficacy of these methods. This project will systematically measure the outcomes of visual-acoustic biofeedback intervention when delivered in-person or online. Methods/design: This project, Visual-acoustic Intervention with Service delivery In-person and via Telepractice (VISIT), aims to treat 76 children in a parallel randomized controlled clinical trial in which children with …

Effect Of Digital Noise Reduction Processing On Subcortical Speech Encoding And Relationship To Behavioral Outcomes, Subong Kim, Mary Schroeder, Hari M. Bharadwaj

Department of Communication Sciences and Disorders Faculty Scholarship and Creative Works

Perceptual benefits from digital noise reduction (NR) vary among individuals with different noise tolerance and sensitivity to distortions introduced in NR-processed speech; however, the physiological bases of the variance are understudied. Here, we developed objective measures of speech encoding in the ascending pathway as candidate measures of individual noise tolerance and sensitivity to NR-processed speech using the brainstem responses to speech syllable /da/. The speech-evoked brainstem response was found to be sensitive to the addition of noise and NR processing. The NR effects on the consonant and vowel portion of the responses were robustly quantified using response-to-response correlation metrics and …

Understanding Mental Health Crisis Response Through The Lens Of First Responders, Ella Gibson

Student Theses

Responses to mental health crises are becoming an increasingly contentious topic as cases of extreme police violence or fatality during a crisis are publicized in the media. Although first responders’ experiences with mental health crisis response have been explored in prior literature, there remains a lack of research that gathers data from multiple first responder roles and compares their experiences across groups. There is also a significant gap in research examining the perspectives of co-response teams. This study sought to gather qualitative data on the experiences of police officers, EMTs/paramedics, and co-response team members, and to explore their perceptions of …

Leading With All The Feels: Exploring The Perceptions Of Middle School Administrators' Implementation Of School-Wide Social-Emotional Learning Programming, Sabrina Smith Richardson

Teaching & Learning Theses & Dissertations

Middle school administrators have multiple responsibilities that range from ensuring the safety and security of staff and students to overseeing the curriculum and instructional foci of their buildings. At the same time, middle school students are experiencing the early stages of adolescence. Because it is a complex time for students to navigate, it creates anxiety, a decline in academic achievement and motivation, and peer and academic pressures (London, 2022; Schlund, 2021). Middle school students have social-emotional needs that are not typically met in secondary schools, which means programming is not typically a part of the instructional day. This study examined …

Tracing The Journey Of Dissolved Organic Matter: From Leaf Litter Photodegradation To Microbial Processing In Tropical Streams, Samantha Nicole Sullivan

Chemistry & Biochemistry Theses & Dissertations

Dissolved organic matter (DOM) is a major reservoir of organic carbon in aquatic ecosystems and plays a central role in global carbon cycling through its transformation and remineralization to carbon dioxide (CO₂). As DOM moves from terrestrial environments into streams and rivers, its chemical composition is altered by a combination of microbial and photochemical oxidation processes that regulate both its reactivity and its persistence during transport. However, the molecular mechanisms governing these oxidative transitions, particularly in tropical ecosystems characterized by strong hydrologic seasonality and substantial inputs of plant-derived material, remain insufficiently resolved. This dissertation integrates ultrahigh-resolution mass spectrometry, optical characterization, …

Reflections In The Mirror: An Examination Of Racially Congruent Mentoring Of Black Teacher Candidates In A Teacher Education Program, Mary Louise Gregory

Teaching & Learning Theses & Dissertations

The high demand for Black educators in K-12 schools across the United States has caused several teacher training programs to rethink how they prepare Black teacher candidates for the teaching workforce (Andrews et al., 2019; Blazar, 2024; Milner & Howard, 2004). Improving teacher candidate training, especially for Black teacher candidates can boost K-12 Black teacher representation. Literature on Black teacher candidate’s experiences while being mentored identifies several challenges that include issues with implicit bias, microaggressions, stereotyping and other occurrences of racial discrimination (Daly et al., 2024; Hampton et al., 2008; Kardos & Johnson-Moore, 2010; Rodriguez et al., 2020). The process …

Proactive Onboarding Services Model As An Academic And Social Integration Strategy For First-Time In College Students At A Virginia Community College, Jhansi V. Eturu

Educational Leadership & Workforce Development Theses & Dissertations

A recent survey by the Education Advisory Board (EAB) found that of the 1000 community college students surveyed, 56% nearly quit before classes started due to challenges during college onboarding. Similarly, admissions data from the Virginia Community Colleges System (VCCS) indicated that more than half of the students who apply do not enroll in classes, highlighting a need to closely examine the onboarding process and support services provided to understand what is effective and what is not. The purpose of this study is to understand the predictive utility of certain student onboarding services, such as an appointment with an admissions …

Research To Practice Gap: Impact Of Principal Perceptions & Communication On Change Initiatives, Jennifer Sagendorf

Educational Leadership & Workforce Development Theses & Dissertations

The purpose of this study is to examine the experiences, perceptions, and practices of school principals related to evidence-based change initiatives and the continued divide between the findings of educational researchers and the use of these findings by school practitioners. Since the prevalent dichotomy of theory and practice is detrimental to school improvement efforts, it is important to examine the underlying values and beliefs that contribute to perpetuating this divide. For this qualitative phenomenological study, semi-structured interviews with seven elementary school principals provided first-hand accounts of the principals' lived experiences. Through an iterative process of coding, clustering, and cross-case analysis, …

Who Gets To Lead? Policy, Systemic Barriers, And Leadership Norms In Education, Kathryn A. Cirilli

Educational Leadership & Workforce Development Theses & Dissertations

This phenomenological qualitative study investigated the underrepresentation of women and racially marginalized individuals in the superintendent position, the highest leadership position within K-12 public education. The superintendent position has been overwhelmingly represented by males, even though women were the majority of the teaching workforce. Grounded by institutional theory and viewed through a phenomenological lens, I examined how organizational norms, hiring practices, and access to mentorship contributed to and upheld systemic barriers to the superintendent position. Through exploring the interpreted lived experiences of current female superintendents across public school districts that reflected the national patterns, this research addressed the disparities in …

Marginalized Pre-Service Teachers’ Digital Competence: An Exploration Of Epistemic Beliefs And Lived Experiences, Jerolyn Rose Brown

STEMPS Theses & Dissertations

Amid growing calls for equity in teacher education, this dissertation investigates how digital competence and epistemological beliefs interact within the lived experiences of marginalized pre-service teachers (mPSTs), also referenced as teacher candidates, whose racial and ethnic identities often position them at the periphery of dominant educational narratives. Anchored in critical narrative inquiry (Pino Gavidia & Adu, 2022) and framed by the DigCompEdu digital competence model (Redecker & Punie, 2017), the study employs a multimethod approach, integrating quantitative data from the SELFIEforTEACHERS self-assessment tool (Economou, 2023) with qualitative insights drawn from in-depth narrative interviews. The participant cohort consists of 50 marginalized …

Understanding Executive Order 13583’S Impact To Federal Workforce Diversity & Employee Perception Of Federal Policies And Programs, Michael Robert Arenella

School of Public Service Theses & Dissertations

Creating a more diverse, equitable, and inclusive (DE&I) workforce produces beneficial organizational outcomes, such as decreased turnover, improved creativity and innovation, and improved organizational performance (Diaz-Garcia et al., 2013; Gomez & Bernet, 2019; McLeod et al., 1996; Singh & Selvarjan, 2013). While the private sector has placed much emphasis on improving DE&I in their hiring practices, whether the federal government has achieved comparable outcomes remains unclear. Guided by the punctuated equilibrium theory (PET), this dissertation examines the impact of Executive Order 13583 on both change in workforce composition, and employee sentiment towards diversity policies and programs.

Using a multi-level, multi-method, …

Evaluation Of Ocean Lidar Enhancement Through Miniaturization And Gated Pmt-Based Range Extension, Chandler Austin Slater

OES Theses and Dissertations

Oceanographic lidar systems remotely characterize the vertical structure of the upper ocean by recording the light backscattered from a laser pulse as it propagates through the water column. Historically these systems have been constrained by limited detection ranges, often capturing only a portion of the illuminated water column, typically fading to noise around the 10% isolume. A primary constraint has been the limited dynamic range of digitizers, which inhibits the ability to resolve both intense near-field and faint far-field backscatter signals within a single acquisition. To address this, we developed a novel optical lidar system incorporating gated photomultiplier tubes (PMTs) …

Observed Parenting, Parent-Child Aggression, And Intimate Partner Violence As Predictive Of Family Dysfunction, Paige Munshell

Psychology Theses & Dissertations

Family systems theories contextualize violence as occurring across multiple levels of the family, yet much of the existing literature focuses on a single family member’s outcome (i.e., the child) and neglects to include data collected from fathers. This study examined the associations between indicators of functioning at the dyadic-level in the family system—observed parenting, Intimate Partner Violence (IPV) perpetration, and Parent-Child Aggression (PCA) risk—and later overall family dysfunction. Participants were 180 mothers and 144 of their male partners evaluated when their child was 18 months old and re-evaluated at 4 years old. Measures of observed parenting, IPV perpetration, and PCA …

Taming The Wicked Problem: Transparency, Civic Apathy, And The Challenge Of Rebuilding Trust In Local Government, Austin N. Kaiser

School of Public Service Theses & Dissertations

Since the 1960s, the United States has experienced a persistent decline in public trust in government. The Founders believed that government could only function with the consent of the governed, making this erosion of trust a significant concern for democratic legitimacy. In response, many scholars and practitioners have championed transparency as a pillar of sound governance and a potential remedy for rebuilding trust. However, the solution may not be as simple as improving openness. Public officials increasingly recognize that transparency alone may have limited or even unintended consequences, especially when public participation is low or administrative resources are strained.

This …

Identifying Alcohol Intervention-Relevant Constructs For Greek Life: Examining Across Greek Membership And Gender Among College Students, Emily Susan Renzoni

Psychology Theses & Dissertations

Among college populations, students who are members of social Greek life organizations (i.e., social fraternities and sororities) drink more and experience higher rates of negative alcohol-related consequences than their non-affiliated peers. Although there has been success of alcohol interventions in general college populations, research has shown that college drinking interventions that are delivered to students in Greek life are not efficacious in reducing alcohol consumption or related consequences. It is meaningful to investigate if the content commonly addressed in these interventions, although well-documented as being linked to drinking in the general college population, has the same associations for students who …

Violence As An Ecology: Women Making Safety In Khayelitsha, Melissa J. Miller-Felton

Graduate Program in International Studies Theses & Dissertations

This dissertation asks how women in Khayelitsha make safety in a place where danger has become ordinary and where the afterlives of colonialism and apartheid still determine who waits, who walks, and who arrives home. What began as a study of risk and protection grew into an inquiry about time, dignity, and responsibility. I call the framework that emerged an ecology of violence—a way of seeing how harm gathers across generations and infrastructures, and how care, exhaustion, and survival intertwine within it.

In this ecology, violence is not a single act but a confluence of registers—slow, structural, colonial, and …

Feasibility Of Expiratory Muscle Strength Training In Individuals With Progressive Supranuclear Palsy, Katya Villarreal-Cavazos, James C Borders, James A Curtis, Jordanna S Sevitz, Nora Vanegas-Arroyave, Michelle S Troche

Faculty, Staff and Students Publications

Introduction: Dysphagia is common among individuals with Progressive Supranuclear Palsy (PSP). Expiratory muscle strength training (EMST) is a treatment used to increase expiratory muscle force production for airway protection deficits. To our knowledge, no studies have tested EMST in this population. The objective of this study was to determine the feasibility of EMST in individuals with PSP.

Methods: Twenty-nine participants completed baseline measures of maximum expiratory pressure and underwent a trial session of EMST. EMST was considered feasible if participants were able to complete at least 10 repetitions at 30% of their maximum expiratory pressure. Qualitative analyses were also completed …

Aluminum As A Tracer Of Dust Deposition To The Ocean: A Case Study From The Bermuda Region, Tara Elizabeth Williams

OES Theses and Dissertations

Aluminum (Al), a major component of mineral aerosol (dust), partially dissolves in seawater and is widely used as a tracer for estimating time‐averaged dust fluxes to the ocean. Such estimates rely on dissolved Al (DAl) inventories in the surface mixed layer (SML), an assumed SML residence time of DAl (_TDAl), the fractional solubility of Al in dust (Al_S), and the mass fraction of Al in dust. In this study, dust flux estimated from seasonal, water-column DAl data from the Bermuda Atlantic Time-series Study (BATS) region are compared with direct dust flux estimated from contemporaneous measurements of …

Exploring Hiring Managers’ Strategies For Recruiting Diverse Educators In A Southeastern State, Keisa K. Davis Ma

Dissertations

This dissertation examined the strategies applied by hiring managers within one state in the southeastern United States to recruit diverse teachers. The purpose of the study was to explore hiring managers’ experiences and knowledge of minority teacher recruitment. The primary research question for this study was: What strategies do hiring managers in the school district under study find most effective in overcoming barriers to recruiting minority educators, and how do they measure their success? Data was collected through semi-structured interviews, and thematic coding was used to arrive at emerging themes, patterns, and perceptions. The findings revealed that while hiring managers …

Language Learner Literature: A Mixed Methods Study, Esmeralda Mora

Dissertations

This dissertation, Language Learner Literature: A Mixed Methods Study, by Esmeralda Mora, Ed.D., of National Louis University, specializing in Curriculum, Advocacy, and Policy, investigated the impact of shifting a Midwest high school world language department from a traditional, grammar-focused model to a proficiency-based approach centered on Language Learner Literature (LLL). Employing a Modified Explanatory Sequential Mixed Methods Design, the study first analyzed longitudinal AAPPL proficiency scores from 1,134 high school students (2020–2025) using T-tests and Multiple Linear Regressions to establish measurable outcomes (the "what"). This quantitative phase demonstrated significant and consistent gains in expressive skills (Writing and Speaking) post-LLL implementation, …

Evaluating The Effectiveness Of A Fully Immersive Esol Elementary Program: A Mixed-Methods Study, Equitia D. Armour

Dissertations

With the enrollment of students who are English Language Learners (ELL) steadily rising across the United States, this research sought to understand how immersive models support both language acquisition and academic achievement. This study examined the effectiveness of a fully immersive English Speaker of Other Languages (ESOL) program in one elementary school. The purpose was to identify the qualities of successful ESOL programming, and the conditions needed for sustained growth. The primary research question for this study was: What are the qualities of a successful fully immersive ELL elementary program? Using a mixed-methods design, data were drawn from surveys, interviews, …