Digital Commons Network^™

"It's The People, Not The Place:" Queering Shared Space In Richmond, Virginia, Kathleen Brown

Theses and Dissertations

The intersection of queerness and planning is an understudied subject area that has implications for equity and access. Queer communities face real barriers to equitable access of resources that stem from a long history of legal, cultural, and economic marginalization. Experiences of shared spaces for queer groups and organizations is important to understand, as outward expressions of queerness are not always welcome in shared spaces, depending on sociopolitical context. Richmond, Virginia has a rich queer history both filled with challenges as well as examples of queer success and joy that makes it a prime case study selection.

This thesis utilizes …

The Mundo I Imagine, Angeliky Castrellon

Theses and Dissertations

My work investigates the human experience of belonging and how the force of displacement alters the perception of one's present and enables dissociation. After leaving my home and starting a new life overseas, coming back never felt the same; I couldn’t find peace and comfort anywhere. This made me create an imaginary world called “Mundo.” Shelters for the souls of the displaced, looking for comfort. As I became a graduate student in the Craft/Materials Studies department, my perspective widened, and my work itself answered a question for me: I want to be comfortable everywhere; how can my home be everywhere …

What’S Sleep Got To Do With It? A Mixed Methods Exploration Of The Feasibility, Acceptability, And Initial Outcomes Of Group Cbt For Insomnia In Parkinson’S Disease, Claire M. Williams

Theses and Dissertations

Parkinson’s disease is a progressive neurodegenerative disease that is commonly associated with sleep disturbances, affecting up to 80 percent of individuals with Parkinson’s. Effective and accessible treatments for sleep problems in Parkinson’s disease remain limited. Cognitive Behavioral Therapy for Insomnia (CBTi) is a well-established, non-pharmacological treatment for insomnia but has been minimally studied in Parkinson’s populations. This study evaluated the feasibility, acceptability, and preliminary outcomes of a group-based CBTi intervention adapted for individuals with Parkinson’s disease. Participants engaged in a six-week group intervention that incorporated Parkinson’s-specific adaptations. Preliminary findings indicated that the adapted group CBTi intervention was generally feasible and …

Exploring, Understanding, And Supporting Academic Help-Seeking In Context, Molly L. Taylor

Theses and Dissertations

Conceptualized as a self-regulated learning (SRL) strategy, academic help-seeking is a fascinating behavior because it is self-directed while also reliant on social interactions with help-givers (Karabenick, 2004). What is known about help-seeking in academic settings largely revolves around individual traits, strategies, motivations, beliefs, and identities, and how each of these constructs influence help-seeking outcomes (Bornschlegl et al., 2020; Fong et al., 2023; Karabenick & Gonida, 2018). What is underexplored in these areas, however, is how features of the learning context interact with student-level factors to shape academic help-seeking behaviors and beliefs. This dissertation attempts to address some of these gaps …

Tuberculosis In Jim Crow Virginia, 1900-1972, Elizabeth Dooley

Theses and Dissertations

Tuberculosis (TB) was a major public health concern in the United States, especially in the first half of the twentieth century. Transmission and treatment of the disease, which is spread between humans through close contact, was complicated by racial segregation laws in the South known as Jim Crow laws. Virginia subscribed to these laws, which played a role in how and where Black Virginians with TB could be treated. Segregated treatment facilities with an inadequate number of beds for the number of infected people and deaths in the state added to these complications of disease control and plan for eradication. …

Early Math Readiness And Later Achievement: A Longitudinal Study, Bailey Bontrager

Theses and Dissertations

The current body of literature provides much evidence that mathematics skills at the start of kindergarten are predictive of later mathematics achievement, and that students enrolled in early childhood education (ECE) programs are better prepared for mathematics at the start of kindergarten. However, the potential for children to develop mathematical skills prior to entering kindergarten relies on access to ECE programs and resources in families’ surrounding communities. Recent use of geospatial data collection techniques and measures of community resource availability have enabled researchers to examine specific localities for the ways in which community organizations and institutions support residents in particular …

Class-Aware Early-Exit Networks For Efficient And Secure Edge Deployment, Mohammed Ayyat

Theses and Dissertations

Edge devices increasingly run high-stakes machine learning workloads under strict latency, power, memory, and communication constraints. Deep neural networks provide the accuracy needed for tasks such as network intrusion detection, health monitoring, autonomous sensing, and human activity recognition, but conventional inference executes the same computational path for every input. Early-exit neural networks reduce average inference cost by allowing confident samples to terminate before the final layer. However, existing early-exit systems are largely class-agnostic: they allocate computation according to confidence or uncertainty, without considering that different output classes may carry different operational urgency. This dissertation develops class-aware early-exit inference, a framework …

Nanomagnet Based Straintronic Devices For Unconventional Computing: Simulation And Performance Analysis, Rahnuma Rahman

Theses and Dissertations

Nanomagnetic devices are of great interest in digital hardware because of their non-volatility and dynamic ability to change magnetization but suffer from high switching error rates and temperature sensitivity. Magnetostrictive nanomagnets that utilize strain to switch between stable magnetization states encoding bit information are of interest since they are extremely energy efficient as piezoelectric layers can be used to rotate magnetization that have switching energies in the range of attojoules. Their stochasticity can also be useful in probabilistic, analog, neuromorphic, and collective computing systems, where occasional switching errors are not devastating. The dissertation extends spintronics beyond conventional computing schemes by …

Discrete Cell Signaling Differences Cause Female-Dominant Il-33 Responses In Mast Cells, Tania D. Maldonado

Theses and Dissertations

Many allergic diseases are more common and severe in women than in men. A key component of allergic inflammation is IL-33, a cytokine released by epithelial cells after allergen exposure. Because mast cells are a central early responder in allergic disease and are activated by IL-33, we investigated sex differences in mast cell responses to IL-33. We first found that male mast cells expanded poorly in standard RPMI-based culture media containing phenol red, which has estrogenic properties. Male cells also responded poorly to IL-33 when cultured with in media containing phenol red. In contrast, female mast cells expanded 3-fold less …

Ontological Runtime Monitoring For Mission Engineering, Alexander R. Will

Theses and Dissertations

The advent of the Urban Air Mobility (UAM) concept will bring low-altitude aviation to civilians through passenger and cargo transport. However, the prospective vehicles in UAM studies are predominantly autonomous, raising questions about their efficacy and stability in densely populated urban areas. At the same time, extensive work has been performed to define a new branch of systems engineering that focuses on runtime behavior, synchronization, communication, and task allocation.This field is known as "mission engineering". Mission engineering has been deployed in military scenarios to model human-autonomy cooperation. By applying the concepts from this field to UAM, full systems-of-systems can be …

Real-Life Health Applications Of Wireless Sensing Using Edge Devices, Md Touhiduzzaman

Theses and Dissertations

Wireless sensing has emerged as a transformative paradigm that leverages ubiquitous radio-frequency signals for environmental perception and human activity recognition beyond their primary role in data communication. Unlike wearable sensors and camera-based systems, wireless sensing offers a non-intrusive, privacy-preserving, and cost-effective alternative that operates seamlessly under low-lighting conditions, through walls, and in non-line-of-sight (NLoS) scenarios. The growing availability of edge computing devices further enables real-time on-device data processing, making wireless sensing solutions highly suitable for in-home health monitoring and smart living applications. This dissertation investigates real-life health applications of wireless sensing through four completed systems, each addressing a distinct challenge …

Positive Body Image In Postpartum Women: A Psychometric Evaluation Of The Body Appreciation Scale-2 And A Phenomenological Exploration, Taylor Vashro

Theses and Dissertations

Postpartum women appear particularly vulnerable to body dissatisfaction due to the rapid physiological, emotional, and environmental changes that occur across the perinatal experience (Baskin et al., 2021; Nippert et al., 2021). Recent studies have demonstrated the experience of both negative and positive body image during postpartum (Rodgers et al., 2024; Watson et al., 2016). However, there is limited research regarding the measurement and exploration of positive body image in postpartum women. The current study aimed to: 1) evaluate the factor structure and psychometric properties of the Body Appreciation Scale-2 (BAS-2), a widely used measure of positive body image in postpartum …

Resilience In The Wake Of Faith-Based Trauma: Investigating The Role Of Social Support In Complex Posttraumatic Stress And Well-Being After Religious/Spiritual Abuse, Ellen Murphy

College of Graduate Studies: Theses & Dissertations

Religious/spiritual (r/s) abuse involves the mistreatment of individuals within religious or spiritual contexts, often resulting in psychological and spiritual harm (Ellis et al., 2022; Johnson & VanVonderen, 1991). Although research examining the potential benefits of religion and spirituality has proliferated, harm stemming from religious/spiritual experiences remains relatively understudied (Ward, 2011). This study investigated associations between r/s abuse severity, complex posttraumatic stress disorder (CPTSD) symptoms, and psychological well-being. To identify potential protective factors, the moderating role of perceived social support in the relationships between r/s abuse and CPTSD and well-being outcomes was examined. Additional exploratory variables included current spirituality and religiosity, …

How Does Language Influence Interest In Psychological Treatment?, Alexis B. Dixon

College of Graduate Studies: Theses & Dissertations

In 2022, approximately 59 million adults in the United States were diagnosed with a mental health disorder, and approximately half received mental health services (NIMH, 2023). Given the number of individuals whose mental health concerns remain untreated, it is vital to investigate mechanisms predicting treatment-seeking behaviors. Health literacy, which influences treatment-seeking, is largely absent from research on barriers to mental health treatment. Health literacy is related to readability, the ease of reading (Adkins & Singh, 2001), and jargon, the technical language used by professionals in a field (Shulman et al., 2020). Health materials are often written at a high reading …

Impact Of Therapeutic Design On Patients’ Satisfaction And Wellness In Healthcare Facilities., Dalia Moati

Architectural Engineering

In recent years, there has been a growing recognition of the signi3icance of designing healthcare environments that extend beyond functionality. These healing hospital environments are designed to promote patient satisfaction and well-being. However, despite increased awareness of their bene3its, the global adoption of healing-centred hospital designs remains limited. While the healthcare system has long focused on treating physical ailments, there is a growing recognition that to promote overall wellness, it must shift toward a more comprehensive approach to healing, addressing not only the body but also the emotional and psychological needs of patients. This paper aims to investigate the impact …

Cryogenic Sloshing In Aircraft Fuel Tanks, Stuart Colville

School of Engineering, Computing and Mathematics Theses

Liquid sloshing in next-generation sub-cooled liquid hydrogen aircraft fuel tanks can induce rapid ullage pressure and temperature drops, potentially causing cavitation in cryogenic pumping systems and compromising fuel delivery systems. Sloshing events may be initiated during taxiing, take-off, landing, and turbulence, with large accelerations producing highly non-linear liquid motion and wave-breaking conditions. Understanding such phenomena is essential for cryogenic hydrogen fuel tank design and certification for next generation aircraft.A systematic experimental methodology was employed to investigate both the wave kinematic and thermodynamic aspects of sloshing. Initial water–air experiments in a simplified horizontal circular tank were conducted to validate measurement techniques, …

Optimisation Of Application Distribution For Heterogeneous Multi-Access Edge Computing Environments, Harald Frank

School of Engineering, Computing and Mathematics Theses

Mobile networks have evolved from pure transport networks for voice, text andimage data to multifunctional data processing platforms. This goes hand in handwith the change from manufacturer-dependent, hardware-based systems tovirtual infrastructure environments based on standard systems.This paradigm shift creates completely new possibilities for functionalities andservices which was not able with the old architecture. On the other hand, theongoing development of the mobile networks with its virtual platforms generatesnew challenges which must be analysed and solved.While the demands on the new functionalities and services are increasing, theend-user device also become more powerful. The combination of end-userdevice mobility, limited resources at the …

Towards An Evaluation Of The Business Value Of Ai: A System Dynamics Approach, Ganesh Sankaran

School of Engineering, Computing and Mathematics Theses

In the early 2010s, when Artificial Intelligence (AI) emerged from the latest "winter" of disillusionment, discussions about its use in decision-making tended to be dichotomous: humans or AI. More recently, consensus has shifted toward a complementary humans-and-AI perspective, recognising that augmentation, not substitution, is the more appropriate frame for AI's role in the foreseeable future. This shift foregrounds the challenge of evaluating outcomes in collaborative decision-making contexts.The thesis proposes a simulation-based framework, drawing on system dynamics, to evaluate whether complex, time-varying interactions between humans and AI agents result in collectively rational behaviour. The framework extends the observation of dynamic complexity …

Self-Guided Functional Imagery Training To Reduce Anxiety, Jackie Andrade, Stephanie Hartgen-Walker, Caroline Morgan, Ayan, Idil Aytekin, Khadijah Sekoni, Kardelen Sengul, Jonathan Rhodes

School of Psychology

Objectives: Many university students experience high anxiety but have limited access to effective interventions. We evaluated a novel digital intervention for anxiety based on functional imagery training (FIT), designed to help individuals identify the impacts of anxiety, set engagement goals, and strengthen motivation for change. Functional Imagery for Keeping Anxiety low (FIKA) uses speak-aloud tasks, journalling, empathic questions, and personalised guided imagery for a person-centred approach. It builds motivation for engagement goals over safety goals through development and practice of vivid and emotionally laden multisensory imagery. Design: Study 1 used semi-structured interviews and thematic analysis to explore user experiences of …

Optimization Of A Group-Based Intervention For People Living With Severe Obesity (Progroup): Understanding Fidelity To Delivery And The Patient Experience, Lily Hawkins, Mark Tarrant, Shokraneh Moghadam, Dawn Swancutt, Rod Sheaff, Laura Hollands, Jonathan Pinkney, Jenny Lloyd

School of Psychology

Objectives: Understanding the fidelity of delivery of complex health behaviour interventions is crucial in determining their effectiveness and identifying aspects needing refinement. PROGROUP is a group-based intervention for people with severe obesity. It aims to promote a shared social identity to support behaviour change. Data from a feasibility randomized controlled trial (fRCT) were used to assess fidelity of intervention delivery and the impact on patient experiences, to optimize the intervention for a main trial. Methods: Data from 18 patient and five facilitator interviews, audio and video data of group sessions, two fidelity checklists, support calls and a group processes questionnaire …

“The True Me”: Unravelling The Dual Narrative Of Borderline Personality Disorder And Autistic Spectrum Disorder, Robin Iliffe-Lewis, Alison Bacon

School of Psychology

Objectives: There is growing recognition that some individuals who receive a diagnosis of Borderline Personality Disorder (BPD) are later diagnosed with autism. However, existing literature on this topic remains limited. This study aimed to explore the experiences of individuals diagnosed with BPD prior to autism, how they made sense of these diagnoses, navigated clinical systems, and learnt to manage the complex challenges associated with this diagnostic sequence.Methods: Thirteen (6 male, 6 female, 1 non-binary) adult participants took part in semi-structured interviews exploring their diagnostic journeys. Reflexive thematic analysis was used to develop a nuanced understanding of their experiences.Results: Three themes …

Navigating Knowledge: Effects Of State Curiosity On Children's Word Learning And Information Seeking [Registered Report]: Effects Of State Curiosity On Children's Word Learning And Information Seeking, Anna Caunt, Shaun Dordoy, Rana Abu-Zhaya, Alastair Smith

School of Psychology

Early learning takes place within complex, multimodal environments where curiosity plays a critical role in guiding exploratory behaviors and supporting cognitive development. While trait curiosity shapes children’s early learning experiences, state curiosity is context-dependent fostering early learning, in-part, through information seeking behaviors. Here, we explore whether state-induced curiosity can influence exploratory behaviors and facilitate word learningwithin a multimodal search task that mirrors real-world learning environments.Children (2.5- to 4-year-olds) will be introduced to novel objects and labels via a storybook. After exposure to each novel object, participants will locate the target object (i.e., a sticker depicting the novel object), hidden within …

Post-Divorce Lgbtq-Parent Families: Navigating Loyalty Conflicts And Stepfamily Closeting, Caroline Sanner, Abbie E. Goldberg, Katherine R. Allen

Psychology

Objective: The purpose of this study was to investigate underexplored dynamics of post-divorce LGBTQ-parent families.

Background: In LGBTQ-parent families in which children were conceived in the context of a prior different-gender partnership, children experience the coinciding events of parental separation and a parent's coming out as LGBTQ. In recent decades, research on LGBTQ-parent families formed following different-gender divorce has stalled, perhaps due to the increasing emphasis on planned LGBTQ-parent families, or families formed after parents have come out.

Method: Twenty-four adults who were born to different-gender married parents (i.e., mother/father families) who divorced when one parent came out as LGBTQ …

Traveling Waves For A Diffusive Sir Epidemic Model With Delay In The Diffusion Term, William Barker

Faculty Scholarship

This paper investigates the existence of traveling waves in a diffusive SIR model with delay incorporated in the diffusion terms and a nonlinear incidence rate with delay. By employing a cross-iteration scheme and partial monotonicity conditions, we establish that the existence of quasi-upper and lower solutions, along with suitable super and sub-solutions, provides sufficient conditions for the existence of a traveling wavefront. This existence result is obtained via Schauder’s fixed-point theorem. Furthermore, given an appropriate basic reproduction number, the traveling wavefront transitions from the disease-free steady state to the endemic steady state. To illustrate our approach, we explicitly construct super- …

Impact Of Immediate Restoration On Bone Remodeling In The Esthetic Zone: A Randomized Clinical Trial, Hao-Dong Wang, Xin-Hai Lin, Yi-Wen Wu, Hong-Run Zhou, Tai Zhao Wei, Xi Chen, Yi-Qun Tang, Ya-Qin Zhu, Long Jiang

Journal of Dental Sciences

Background/purpose: Traumatic loss of anterior teeth creates esthetic challenges and often requires immediate rehabilitation. Although immediate implant placement and restoration (IIPR) shortens treatment time, strict primary stability limits its use. A native-crown restoration supported by fiber-reinforced composite (FRC) splints may broaden the indications of immediate restoration, but its effectiveness remains unclear. This randomized controlled trial aimed to evaluate the effects of the novel immediate restoration following IIP on peri-implant bone remodeling in anterior esthetic zone trauma during osseointegration.

Materials and methods: Twenty participants undergoing IIP in the anterior maxilla were randomized into two groups. In the experimental group, immediate restorations …

Living With Generative Ai: Considering Constructionist Approaches To Learning And Methodological Implications Of Process Ontologies, Jimin Lee, Nancy Budwig

Psychology

The growing presence of generative artificial intelligence (GenAI) in educational practice raises questions about how learners and educators live with AI and reshapes questions about how learning unfolds across contemporary learning environments. Although research on AI in education has expanded quickly, much of this work continues to frame GenAI in technocentric and static terms, as a tool to be evaluated, rather than as a relational and developmental presence within learners' trajectories. Drawing on constructionist learning theory and post-Cartesian metatheoretical perspectives, this mini review suggests that such framings are insufficient for understanding how learning is enacted in AI-mediated contexts. We propose …

Elastohydrodynamic Propulsion Of A Magnetically Actuated Filament, Sohum Kapadia, Julien Chopin, Arshad Kudrolli

Physics

We investigate the low-Reynolds-number propulsion of a slender elastic filament with a dipolar magnetic head actuated by an oscillating magnetic field in a viscous fluid by studying its strokes and net forward motion. To capture these dynamics, we employ an elastohydrodynamic (EH) framework that couples Euler-Bernoulli beam mechanics with resistive force theory. Unlike prescribed-kinematics models, filament shapes here emerge self-consistently from the actuation and the force and torque boundary conditions (BCs). We demonstrate that viscous boundary contributions are crucial for quantitative agreement and show that the swimming dynamics are governed by the EH length and a magneto-viscous-elastic stroke amplitude introduced …

What Kind Of Democracy Is Energy Democracy? Reconsidering Energy Democracy Through Green Democratic Theory, Eric S. Godoy

Faculty Publications - Philosophy

This study examines an energy democracy framework for guiding a just transition to renewable energy, which incorporates democratic methods and values into energy policy decision-making. But as there are a variety of models of democracy (e.g. liberal, ecological, green republican, and socialist), energy democracy is a complex normative concept, which gives rise to ambiguities and confusions. Drawing from political theory, I argue that identifying with a particular kind of democracy provides the framework with a clearer definition, richer normative grounding, and resources for addressing some limitations its critics have identified, such as the reduction of democracy to participation.

Diverse C–C Bond Formation Reactions Catalyzed By Oxidized Palladium Nanoparticles Supported On Marine Shell Waste Powder Via Additive-Free Deposition–Precipitation, Jian Hou, Garrett M. Milligan, Zhicheng Cai, Jun-Hyun Kim

Faculty Publications – Chemistry

The formation of carbon-carbon (C–C) bonds is central to modern organic synthesis. Although the use of conventional Pd-ligand complexes as homogeneous catalysts results in highly effective yields, these systems often face some limitations including high cost, difficult recyclability, and thermal stability. Here, we demonstrate the utilization of palladium (Pd)-derived metals supported on finely ground marine shell waste as a reactive and recyclable catalyst for diverse C–C bond-forming reactions. Oyster shell powder (OSP) derived from problematic biowaste, primarily composed of calcium carbonate, provides abundant anchoring sites to immobilize Pd ions via an additive-free deposition–precipitation method, followed by thermally-induced conversion into oxidized …

Structural Design Of Macroporous Layered Double Hydroxide Catalysts: Alleviating Mass Transport Constraints In Bulkier Triglycerides, Nazrizawati Ahmad Tajuddin, Mohamad Hidayat Haider, Nazarudin Nazarudin

Baghdad Science Journal

Layered double hydroxides (LDHs) serve as potential catalysts for biodiesel production through triglyceride (TAG) transesterification; nevertheless, mass transport limitations hinder their effectiveness, especially with larger TAG molecules. This study addresses this limitation by synthesizing macroporous MgAlLDH and ZnAlLDH using a polystyrene templating method. Thorough characterization reveals the successful formation of macroporous structures with significantly increased physicochemical properties and their structural design compared to conventional LDHs. X-ray Diffraction (XRD) confirmed the successful restoration of the LDH structure following calcination and rehydration, with enhanced crystallinity seen in the macroporous materials. The BET surface area analysis revealed a substantial increase (∼10x for MgAlLDH) …