Digital Commons Network^™

From Image Enhancement To Model Protection Integrating Generative Ai And Secure Learning In Computer Vision, Mohammad Shahab Uddin

Electrical & Computer Engineering Theses & Dissertations

This dissertation aims to address critical challenges in the field of computer vision and machine learning, focusing on three key areas: image translation, denoising, and model security. The research encompasses novel methodologies and models that significantly advance existing techniques. This dissertation will not only provide valuable contributions to the academic community but also hold significant potential for practical applications in domains ranging from surveillance to autonomous systems.

Consequently, this dissertation proposes three goals. First, we present new approaches for converting optical videos to infrared videos using deep learning. To apply powerful deep learning based algorithms for object detection and classification …

Nanosecond Pulsed Electric Field And Plasma Jets For Cancer Therapy, Edwin Ayobami Oshin

Biomedical Engineering Theses & Dissertations

Nanosecond pulsed electric field (nsPEF) employs nanosecond-duration, high voltage pulses to induce oxidative stress, leading to temporary or permanent damage to cells or tissue (also known as reversible and irreversible electroporation), and has been considered a promising approach for cancer therapy. In parallel to this, nanosecond pulsed atmospheric pressure plasma jets (ns-APPJs) have also shown to be effective in inactivating cancer cells or increasing sensitivity of cells to electric fields. ns-APPJs are known to generate reactive chemical agents, including reactive oxygen and nitrogen species (RONS) which induces oxidative stress resulting in cell proliferation, apoptosis, and necrosis. In this dissertation, a …

Mechanochemical Reaction Kinetics—A Theoretical Modeling And Experimental Study, Maria Dolores Masso Ramirez

Mechanical & Aerospace Engineering Theses & Dissertations

Mechanochemical reactions represent a class of chemical processes triggered by mechanical energy, widely recognized for their efficiency, solvent-free nature, and environmental benefits. They are increasingly applied in synthetic chemistry, a branch of science focused on creating new chemical compounds through controlled laboratory reactions. However, the mechanisms underlying mechanical activation remain poorly understood, primarily due to the difficulty in quantifying energy transfer during milling, where solid reactants are ground together using a ball mill. This thesis aims to bridge the gap in understanding the relationship between mechanical parameters and reaction kinetics by developing and validating a theoretical framework based on dimensional …

Navigating Challenges: Public Community College Leadership In The Face Of Existential Crisis, Sarah Lynne Lupton-Houston

School of Public Service Theses & Dissertations

This study answers the question: "When faced with an existential crisis, indicated by declines in key performance indicators, how do public leaders make decisions?" The research uses the Garbage Can Model and Incrementalism combined theoretical framework to explore how public administrators navigate crises in complex, hierarchical, and bureaucratic structures where unpredictable challenges often demand adaptive responses. This study offers insights into decision-making processes that blend reactive, opportunistic choices with measured, gradual adjustments.

The findings from this research contribute to the field of public administration by examining the decision-making strategies used by leaders at public community colleges in Virginia during a …

Teaching Art Beyond The Hierarchy: How “Big Ideas” Combat Cultural Appropriation, Carlie Pearson

Institute for the Humanities Master's Papers, Projects, and Capstones

[First paragraph] As an art educator who has worked with children aged 5-18 in the public-school setting, I find myself constantly assessing and reevaluating my practices. When I was in high school and falling in love with the world of visual art, I had a teacher who introduced me to the beautiful and sacred art of mandala making. We learned about how Buddhist Monks create massive works with colorful sand, and I was shocked to hear that the pieces are traditionally swept away upon completion. When I started my first full time teaching position seven years ago at a high …

Gatekeeping Girlhood: Tiktok As An Agent Of Gender And Racial Socialization, Kennedy Elyza Davis

Communication & Theatre Arts Theses

This thesis uses qualitative methods to study and analyze how TikTok users and the platform’s algorithm work together to redefine girlhood. By examining individual posts and the origins of the trends that they belong to, I will show why some users reject this new definition, as others have embraced it, and what this means for the future of girlhood. This research will complicate the question of what it means to be a girl on the Internet and the challenges that accompany this experience. Ultimately, I expand on the study of gender roles and the impact of social media as an …

Network Analysis Of Sociotechnical Systems, Siva Kadiresan

Engineering Management & Systems Engineering Theses & Dissertations

Sociotechnical networks have become integral frameworks in the accomplishment of organizational objectives by increasingly diverse, cross-functional, and technology-enabled modern teams. In cross-disciplinary teamwork, multiple mediating and moderating factors appear to lend context to the effects of team diversity faultlines on team outcomes. In the several decades of research into teamwork from a network perspective, there has been a paucity of empirical studies that examine how team transition processes and cross-disciplinary connections influence the impact of faultlines on team performance. This study investigates the association among perceived teamwork effectiveness, transition processes, cross-functional team connections, and faultlines in the context of sociotechnical …

Streamer Discharge Simulation For Plasma-Assisted Combustion, Stuart Jairo Reyes

Electrical & Computer Engineering Theses & Dissertations

A common and successful method to achieve atmospheric pressure fuel-air plasma-assisted combustion is through repetitive ns pulsed discharges and dielectric-barrier discharge. The transient phase in these discharges is dominated by transport influenced by strong space charges produced by ionization fronts, this can be best represented by the streamer model. The function of non-thermal plasma in these discharges is to excite the species in the fuel-air mixture to produce radicals which accelerate the chemical conversion reactions which directly lead to temperature rise, ultimately culminating in ignition. Therefore, the characterization of the streamer and its energy partitioning is essential to developing a …

Intimate Partner Violence Among College Students: The Influence Of Gender, Sexual Orientation, Race/Ethnicity On Bystander Intention, Brooke M. Puharic

Psychology Theses & Dissertations

Intimate partner violence (IPV) among college students is an issue across gender, sexual orientation, and race/ethnicity. The present study highlights the sociodemographic characteristics that influence physical IPV involvement among college students by reporting past year prevalence and frequency rates of physical IPV involvement by gender, sexual orientation, and race/ethnicity. Additionally, the current study builds on research about bystander intention to intervene by exploring the influence of these sociodemographic characteristics on participants intentions to intervene, as well as their preferred type of intervention.

Participants were 525 university students recruited from the psychology research pool. They were presented with eight hypothetical vignettes …

The Impact Of Success Coaching On Psychological Well-Being And Sense Of Belonging In First-Year College Students, Lashay Y. Mcqueen

Educational Leadership & Workforce Development Theses & Dissertations

As higher education institutions seek to assist students with the first-year transition, coaching is one intervention shown to increase academic performance and retention rates (Capstick et al., 2019). Along with academics, fostering student success from a holistic perspective is imperative (Bentrim & Henning, 2022). The purpose of this study was to determine the impact of participation in success coaching on the psychological well-being and sense of belonging for first-year college students. The study also investigated the impact of success coaching on first-generation students. Existing data were used to compare participation in success coaching to overall psychological well-being and sense of …

Exploring The Impact Of Language Modeling Integration In Classroom Assessment Scoring System (Class) On Language Teaching And Learning In Pre-K Settings: A Comprehensive Analysis Of Teacher-Child Relationships And Interactions, Joy Lee Hernandez

Teaching & Learning Theses & Dissertations

This descriptive research study utilizes a mixed methods design to explore the impact of integrating language modeling into the Classroom Assessment Scoring System (CLASS) on teachers' perspectives on language teaching and learning. Additionally, the study analyzed teacher-child interactions in Pre-K settings in Southeast Virginia, U.S.A.

Observations were conducted in eleven (11) classrooms using the Pre-K CLASS, a key instrument for assessing the quality of teacher-child interactions across domains such as Emotional Support, Classroom Organization, and Instructional Support, which includes Language Modeling. The CLASS tool was supplemented with detailed notetaking to capture both quantitative scores and qualitative nuances of interactions. This …

Testing Autonomy: Hybrid Scenario Synthesis, Benjamin E. Hargis

Electrical & Computer Engineering Theses & Dissertations

Hybrid Scenario Synthesis merges static and adaptive techniques to generate interactions that rigorously assess autonomous performance under multi-factor testing. Multifactor scenarios employ multiple individual stimuli to rigorously test system responses in complex settings. Static Scenario Testing involves scripted test cases that simulate specific conditions or events. These scenarios represent typical situations an autonomous system might encounter. The benefits of static testing include early defect detection, focused review by trained experts, and efficiency. In multi-factor scenarios, however, statically defined scenario factors are not able to guarantee meaningful interactions as the presence of other factors may invalidate underlying assumptions regarding the system …

The Role Of Artificial Intelligence In Workforce Learning And Development: A Systematic Review, Mildred V. Jones

Educational Leadership & Workforce Development Theses & Dissertations

The purpose of this study is to investigate how artificial intelligence (AI) is currently employed in workforce learning and development. The study examined the types of AI employed and the affordances realized for organizations and employees. A PRISMA systematic review methodology was utilized to address the overarching problem statement and answer the three questions guiding the study. The PRISMA extension Preferred Reporting Items for Systematic Reviews and Meta Analysis for Protocols was used to direct each phase of the research. In addition, the Preferred Reporting Items for Systematic Reviews and Meta Analysis was used to conduct the article selection process. …

Inked Insight: A Consensual Qualitative Research Study Exploring The Perspectives Of Visibly Tattooed Counselors, Megan Ashley Lalonde-Pittman

Counseling & Human Services Theses & Dissertations

This study explored the experiences of visibly tattooed mental health counselors (VTMHC) through consensual qualitative research (CQR), examining how visible tattoos were perceived to have impacted the participants (N=14) professional experiences, development, and relationships within the counseling field. Seven domains arose from the data: Prejudices experienced by VTMHC, VTMHC Interactions with others, Culture experienced by VTMHC, Appearances of the VTMHC, Professional therapeutic work of the VTMHC, Workplace environment of the VTMHC, Processing the experience of being a VTMHC The implications for multicultural education and future research are explored.

Mapping Perspectives: Community College Career Advisors’ Viewpoints For Enhancing Economic Mobility And Career Selection—A Q Methodology Study, Christopher Ryan Harrison

Educational Leadership & Workforce Development Theses & Dissertations

In an era of rapid workforce transformation and increasing demand for postsecondary career readiness, community college career advisors play a critical role in supporting students’ economic mobility and informed career decision-making. Traditional academic advising, which primarily focuses on course registration and degree completion, may not fully address students’ evolving career development needs. This study employed Q methodology to examine the subjective viewpoints of career advisors in North Carolina community colleges regarding strategies to enhance students’ career outcomes. Grounded in human capital theory and career construction theory, the study investigated how advisors integrate labor market data, wage trends, and workforce expectations …

Compulsory Sterilisation And Reproductive Injustice In India: The Global Impact Of The American Eugenics Movement, Marina Cortez

Institute for the Humanities Theses

On 8 November 2014, Dr RK Gupta performed eighty-three tubal ligations at a makeshift clinic in Bilaspur, India — thirteen of which resulted in death. The women, most of whom belonged to the Dalit or “untouchable” caste, were recruited by family planning agencies, lured in by cash incentives or other gifts in exchange for sterilisation. Sadly, however, the Bilaspur tragedy does not exist in isolation — but rather belongs to an extensive history of government-sponsored abuse, the majority of which has been directly led by white, Western powers. Funded by the New York-based Population Council, India was one of the …

Fostering Cognitive Complexity In Behavioral Health Providers: Perspectives From Supervisors In Integrated Primary Care, Katherina Nako

Counseling & Human Services Theses & Dissertations

The integration of behavioral health into primary care settings, known as Integrated Primary Care (IPC), offers a holistic approach to addressing both physical and mental health needs (Ramanuj et al., 2019). Efforts to expand access to mental healthcare have contributed to the growing presence of IPC settings (Martin 2017), with mental health providers, such as mental health counselors, joining these teams as Behavioral Health Providers (BHPs; Blount, 2017). However, the unique complexities of IPC often leave BHPs feeling underprepared, largely due to the traditional training frameworks emphasized in many graduate counseling programs. The need for BHPs to adapt to the …

Designerly Skills: An Educational Design Research Study On K-5 Teacher-Designers N Trauma-Informed Technology-Enhanced Learning Environments, Kristin Marie Herman

STEMPS Theses & Dissertations

This study explored how K-5 teachers exhibit designerly skills when creating trauma-informed, technology-enhanced learning environments. While teachers have long been recognized as designers, asset-based research on their specific designerly skills, particularly in trauma-informed digital spaces, remains limited. Using an educational design research (EDR) approach focused on research-for-interventions, this study examined which skills teachers consider essential and how these skills manifest in course designs supporting student belonging.

The study employed a multi-method qualitative approach over 12 months, following 23 K-5 teachers and administrators engaged in designing Canvas courses. Data collection included reflective discussion boards, design studio sessions, individual think-aloud protocols, and …

Expanding The Lexa Bacterial Two-Hybrid System For Human Protein-Protein Interaction Screening: Application To Tumor Suppressor Par-4, Rebecca M. Richardson

Chemistry & Biochemistry Theses & Dissertations

Protein-protein interactions (PPI) are fundamental to cellular function, influencing processes such as signaling, structural organization, and disease progression. Disruptions in PPIs are implicated in cancer and neurodegenerative diseases, highlighting their importance as therapeutic targets. However, traditional methods for studying human PPIs, such as yeast two-hybrid and co-immunoprecipitation mass spectrometry, are costly and technically demanding. This dissertation explores the LexA-based bacterial two-hybrid (LexA-B2H) system as a cost effective and accessible alternative for investigating human PPIs.

This study focuses on the interaction between glucose-regulated protein 78 (GRP78) and cleaved prostate apoptosis response-4 (cl-Par-4), a tumor suppressor protein involved in apoptosis and neurodegenerative …

Weapons Of Mass Disruption: How Small States Use Cyber To Resist Larger Powers, Russell Alexander Korb

Graduate Program in International Studies Theses & Dissertations

This paper examines the ways in which small states can engage larger actors using cyber- attacks. Since the end of both World Wars, small states have increased in both numbers and relevance, with strong international institutions and norms against military aggression allowing small states to gain legitimacy by the very act of participating in the international system. However, although small states can now do more than simply choose a larger, stronger benefactor to ward off their enemies, they still cannot defy larger powers outright due to the still- dramatic difference in capabilities between them. Those small states interested in confronting …

Communication During Perimmigration: A Life-Line Interview Method Study, Giada Roberta Rossi

Communication & Theatre Arts Theses

This thesis examines the communication challenges faced by migrants and their impact on acculturation using a new approach. The study analyzed autobiographical memories of immigrants’ communication to explore both positive and negative experiences over time. The study extends previous intercultural communication research by using the Life-Line Interview Method (LIM) (Assink & Schroots, 2010) to collect autobiographical narratives from twelve participants about their communication journeys. The findings reveal consistencies with past intercultural communication research insofar as uncertainty and identity problems were pervasive, but also positively extends past research arguing that supportive environments, characterized by culturally responsive educators and peer networks, play …

Planetary Atmospheres, Ryan M. Johnson

Physics Theses & Dissertations

Planetary atmospheres are frequently studied using a number of spectroscopic methods. One of these is observing spectra to analyze what molecules are present or chemical reactions may be taking place. To this end, we have produced a line list of the electronic a¹Δ−X³Σ⁻ and b¹Σ⁺−X³Σ− transitions of SO. Additionally, a line list pure rovibrational transitions of the a¹Δ and X³Σ⁻ states were produced, but lacked the necessary experimental data for the b¹Σ⁺ state. These line lists can be used in further …

Effects Of High Temperature Compaction On 3d Printed Carbon Fiber Reinforced Polymer Composites, John D. Barber

Mechanical & Aerospace Engineering Theses & Dissertations

The aim of this dissertation was to study the effects of hot temperature compaction (HTC) upon the polymorphism and the mechanical behavior of an additively manufactured (AM), carbon fiber reinforced polyamide (PA6). Different pressure and temperature levels during HTC were tested to determine the overall effect upon the mechanical behavior and the material crystalline composition. Treated, carbon fiber reinforced PA6 samples were analyzed using differential scanning calorimetry, x-ray diffraction, thermogravimetric analysis, scanning electron microscopy, double cantilever beam testing and three-point bending testing. When considered with respect to as-printed samples, an HTC temperature of 190°C combined with 80 psi pressure resulted …

Jaded Poison, Taylore Huxford

English Theses & Dissertations

Jaded Poison is, at its heart, a modern fantasy love story novel that starts when two different worlds collide. It is a novel in which Evelyn Beaumont receives a bag from her best friend, Jordan. From that point, she soon discovers that the bag teleports things, which starts with her bank statements, to another world—a high fantasy world. The receiver is Valerie Aeris, the Princess of the Valaros kingdom. The two women begin exchanging letters and find solace in each other; Evelyn feels lonely and that her life has no direction, and Valerie feels suffocated in the high society culture …

Biogenic Modification Of Tidally Modified Substrates From The Micro- To Macroscopic Scale, Rogers Clark Caldwell Buntin Ii

OES Theses and Dissertations

Digital outcrop models generated by high-resolution photogrammetric imagery permit investigations into organism-substrate interactions at the centimeter to sub-millimeter scale. This dissertation uses this three-dimensional technology to study two sedimentary successions— the Archaean Dresser Formation and Cretaceous Dakota Sandstone— by capturing images via unmanned aircraft systems and single lens reflex cameras. The ~3.48 Ga Dresser Formation provides evidence for some of the earliest life on Earth in the form of stromatolites and microbially induced sedimentary structures. Aerial imagery of the 3.5 km2 Buick Geoheritage reserve capture the site’s geologic structures and close-range imagery documents stromatolites and several microbially induced sedimentary structures …

Low Dissolved Oxygen Operation Enhances Biological Phosphorus Removal In Wastewater Treatment, Haley Morgan

Civil & Environmental Engineering Theses & Dissertations

Biological phosphorus (bio-P) removal occurs when bacteria are exposed to anaerobic/aerobic conditions that stimulate polyphosphate-accumulating organisms (PAOs) to uptake phosphorus. In most treatment plants, dissolved oxygen (DO) concentrations in the aeration tanks are commonly at or above 2.0 mg O₂/L, which is often referred to as the most optimal aeration condition for bio-P. If bio-P can happen efficiently at lower DO (< 0.3 mg O₂/L), then the energy demand of aeration can be decreased appreciably. This research was conducted in a biological nutrient removal (BNR) pilot plant to assess the performance of bio-P at progressively lower DO operation. This …

Enhancing Iot Security Using Lightweight Machine Learning Algorithms: A Comprehensive Approach Using Ensemble Learning, Feature Selection, And Federated Transfer Learning, Khawlah Harahsheh

Electrical & Computer Engineering Theses & Dissertations

The rapid expansion of the Internet of Things (IoT) has introduced significant security vulnerabilities due to the resource-constrained nature of IoT devices and their exposure to cyber threats. Traditional security solutions are often infeasible due to the high computational and storage demands they impose. This dissertation presents a lightweight, AI-driven security framework that enhances IoT network resilience by integrating feature selection, ensemble learning, and federated transfer learning while maintaining data privacy and minimizing computational overhead.

The proposed framework consists of three primary components: Feature Selection for Intrusion Detection, which optimizes performance by reducing redundant data and improving detection accuracy with …

Synchrotron Radiation Interferometry At Cebaf, Sankalp Rajendra Shinde

Physics Theses & Dissertations

Synchrotron radiation interferometry is a method to measure transverse beam size in electron accelerators. By using synchrotron radiation interferometry at a dispersive location in CEBAF at Jefferson Lab, we measure the electron beam size and energy spread. This interferometry technique allows us to monitor the energy spread non-invasively, to measure precise electron beam rms energy spread for hypernuclear experiments, and verify that they meet experiment requirements in real time. This dissertation discusses the design, simulations, construction, and commissioning of this Synchrotron Radiation Interferometer (SRI) in the Hall C line at Jefferson Lab in 2024–2025.

The Structure Function Of The Free Neutron At High X-Bjorken, Madhusudhan Pokhrel

Physics Theses & Dissertations

Understanding the internal structure of nucleons is one of the primary goals of nuclear physicists. As protons and neutrons are only the bound state solution of the QCD lagrangian (at least inside atomic nuclei), studying protons and neutrons helps uncover nuclear structure. Due to its easy availability, many studies on protons have been done on a wide range of kinematics. However, free neutron targets are not readily achievable. So, any information on neutrons has to be extracted from neutron-rich nuclei, and some nuclear models have to be used to subtract the contributions from other nucleons to extract the information …

Leveraging Artificial Intelligence To Strengthen Human Resilience Against Phishing Attacks, Muhammad Mavins

Cybersecurity Undergraduate Research Showcase

Phishing attacks are a major cybersecurity threat, tricking people with fake emails, scam websites, and social engineering tactics. As these attacks become more advanced, traditional security measures are no longer enough to stop them. This paper looks at how Artificial Intelligence (AI) can help detect and prevent phishing while also making people more aware of these threats. Using machine learning (ML), natural language processing (NLP), and behavioral analysis, AI can examine email content, sender behavior, and metadata to spot phishing attempts. AI-powered cybersecurity training can also teach people to recognize and respond to phishing by using personalized phishing tests and …