Digital Commons Network^™

Musings Of A Dyke: Reimagining A Lesbian Past To Support A Lesbian Future, Tori Mitchell

Theses and Dissertations

This thesis interrogates the heterosexist bias inherent in historical narratives by recontextualizing myth, biblical accounts, folklore, and art history through a dedicated lesbian lens. Utilizing oil painting as my primary medium,  I construct a metafictional world–a pseudo-historical space where the foundational assumption is that every figure is a lesbian until proven otherwise. This inversion serves as a direct counter-narrative to the default lens of cis heteronormativity typically applied to the past. Within this world, I “lesbianize” the traditional icons of Western culture: the heroes, the symbols, and the deities.

My practice navigates the tension between reinvention and extinction, viewing both …

Generating Synthetic Ct From Mri Data, Foysal Ahmed

Theses and Dissertations

Magnetic resonance imaging (MRI) provides excellent soft tissue contrast without ionizing radiation, making it a strong alternative to computed tomography (CT) in medical imaging workflows. However, CT remains essential for applications requiring electron density information, such as radiation therapy treatment planning. This study investigated the feasibility of generating synthetic CT (sCT) images from MRI using a deep learning-based U-Net architecture. A two-dimensional U-Net was trained on paired MRI-CT data from the SynthRAD 2025 dataset, consisting of 120 T1-weighted (T1W) and 60 T2-weighted (T2W) axial cases, including deformed CT (dCT) aligned to MRI. Model testing used an independent dataset of 30 …

In Search Of The Soul Of Creativity: Authorship, Agency, And Meaning In Refractive Collaboration With Generative Ai, Fatima Nazir

Theses and Dissertations

When images can be generated in seconds, what remains uniquely human in the act of creation? In Search of the Soul of Creativity: Authorship, Agency, and Meaning in Refractive Collaboration with Generative AI investigates where authorship, agency, and meaning reside within design practices mediated by generative AI. Rather than using AI to produce predictable results, this research deliberately relinquishes control to observe how generative systems interpret language through their own learned associations. Through a practice-led investigation across four generative models within the Higgsfield platform, user prompts were progressively shortened from full sentences to single words, revealing recurring patterns and cultural …

Magnetic Resonance Only Planning Validation Using Synthetic Ct By Mvision, Eric D. Brass Sr

Theses and Dissertations

Problems: Adaptive radiotherapy requires clinically practical methods for responding to patient-anatomy changes that occur between the original planning images and the day of treatment delivery. Registering a previously acquired computed tomography scan to a newly acquired magnetic resonance image can introduce cross-modality uncertainty and may delay replanning. This thesis evaluates whether synthetic computed tomography generated from same-day magnetic resonance imaging can reduce registration-related uncertainty while supporting rapid dose recalculation for fraction-level adaptation.

Procedure: Magnetic resonance imaging DICOM data were exported from the ViewRay MRIdian treatment planning system and uploaded to MVision for synthetic computed tomography generation. The synthetic computed tomography …

Development Of A Practical Lu-177 Activity Calibration Protocol For Clinical Nuclear Medicine: Dosimetric Impact Analysis And Implementation Tools, Azam Almolaiki

Theses and Dissertations

Lutetium-177 (Lu-177) is widely used in radionuclide therapy, where accurate activity measurement prior to administration is essential for safe and effective treatment delivery. However, variability in dose calibrator response due to measurement conditions and source geometry remains a practical challenge in routine clinical settings. This study presents a practical clinical calibration strategy under real-world constraints for Lu-177 activity measurement using standard nuclear medicine instrumentation. A vial-based approach was implemented using a well-type ionization chamber (Capintec CRC-15R) to evaluate measurement repeatability, temporal stability, and geometry dependence. All measurements were performed under consistent conditions with appropriate decay correction applied using the physical …

The Ethereal Being That Is Me, And Maybe You, Hwiy Chang

Theses and Dissertations

The Ethereal Being That Is Me, and Maybe You is a 23-minute video collection of short stories accompanied by an installation at the Institute for Contemporary Art at Virginia Commonwealth University. This thesis explores the work’s creation as a visual and narrative meditation on self-transformation, drawing from personal experiences in therapy and philosophical texts including Carl Jung’s concept of the unconscious. The paper examines how each story represents a distinct stage of transformation—from recognizing patterns to confronting setbacks to reshaping internal dialogue—and how watercolor’s fluid, unpredictable nature serves as a visual metaphor for the process of change. The installation component …

Follow The Cyclists: Everyday Navigation Of Richmond's Bike Infrastructure, Emily E. Schreer

Theses and Dissertations

This thesis explores the embodied experience of cycling in Richmond, emphasizing the importance of centering firsthand, lived experience in cycling research and urban planning. While traditional transportation planning can often myopically prioritize efficiency and safety metrics to evaluate infrastructure, this project argues that such approaches overlook essential experiential, sensory, and emotional dimensions of cycling that determine how infrastructure is perceived, used, and ultimately succeeds or fails.

Through an ethnographic approach combining field observation of cyclist behavior and mental mapping sessions with Richmond cyclists, this study positions people who bike in Richmond as expert knowledge holders. Participant contributions, combined with observations …

A Mutant Perfect, Amelia R. Baxter

Theses and Dissertations

A Mutant Perfect examines how embodied knowledge can be made visible and transmissible through ceramic figures. The research asks what forms emerge when making is understood as a mode of thinking rather than a vehicle for pre-formed ideas, and how those forms might activate somatic recognition in a viewer. The primary method is coil-built ceramic sculpture. Color is applied in layered coats and removed by hand-sanding to expose varying strata beneath, producing a speckled, worn surface. In a second approach, pigment is built directly into the clay body through coil construction, making color structural rather than applied. Narrative prose and …

Characterization Of Microrna Expression In Neuron-Enriched Extracellular Vesicles During Early Life, Allison Molen

Theses and Dissertations

Extracellular vesicles (EVs) are membrane-bound sacs released by cells that carry molecular cargo reflective of their cell of origin. EVs enriched using L1 cell adhesion molecule (L1CAM) as a marker of putative neuronal origin can cross the blood–brain barrier and provide a minimally invasive window into brain-related processes. Exosomal microRNA (miRNA) regulate gene expression and have been implicated in psychiatric disorders, including major depressive disorder (MDD). However, measuring and analyzing miRNA from L1CAM-positive EVs presents substantial analytical challenges due to low abundance and sparse detection across samples.

Plasma samples from participants recruited through the Mid-Atlantic Twin Registry (MATR) were used …

A Qualitative Analysis Of Teacher-Report Modifications Of A Tier 2 Evidence-Based Program In Elementary Schools After Implementation Supports Are Withdrawn, Navneet Kaur

Theses and Dissertations

Growing literature emphasizes the importance of examining modifications (i.e., responses to unforeseen challenges and deliberate changes to a program) made by implementers to understand the long-term outcomes of evidence-based programs (EBPs), particularly after formal implementation supports, such as training and coaching, are withdrawn. Although prior research has documented that they occur during implementation, less is known about whether modifications occur once external supports are no longer available, and if so, what types of modifications are made, and the rationale for them. This gap is especially salient in school settings for teacher-delivered interventions. To address this gap, this study used semi-structured …

Examining The Impact Of Trauma-Informed Mindfulness Meditation On Posttraumatic Growth Following Interpersonal Trauma: A Randomized Controlled Trial, Margaret Poandl

Theses and Dissertations

Research on interventions designed to increase posttraumatic growth (PTG) among interpersonal trauma survivors is limited. The purpose of this study was to examine the impact of a six-week trauma-informed mindfulness meditation intervention on PTG. Additionally, I examined outcomes of posttraumatic stress (PTS) and loneliness, as well as analyzed the variables of dispositional mindfulness, hope, spirituality, and self-compassion to understand their potential role as mechanisms of change within the intervention on PTG. To answer these research questions, I conducted a randomized controlled trial study with 113 adults from a community sample who reported experiencing interpersonal trauma. Utilizing linear mixed modeling and …

Walking And Wondering, Helen T. Tran

Theses and Dissertations

My thesis approaches walking as a form of inquiry and the Flood Wall as a site open to reinterpretation. I believe that the way we walk changes the way we observe and experience the world around us. This contrast between purposeful and leisurely walking reveals how time and intention shape our awareness of space. When walking is no longer dictated by urgency, it invites observations and questions. Slowing our pace allows curiosity to emerge, which aligns with my design ethos of asking questions as a foundation for understanding and creating meaningful experiences.

The Flood Wall’s emphasis on uninterrupted movement prioritizes …

Pingbongbilladingdong: Abjection And Comedy In Art, Leroy A. Winter

Theses and Dissertations

As of late, my work has dealt with themes of collapse and comedy, pertaining specifically to faded ideals of individualism in art. My thesis installation, titled Pingbongbilladingdong, is a testament to this tension, portraying a reconstruction of the disheveled chaos of the artist’s studio. In this paper, I use this installation as a means to further explore the ways that abjection and comedy intersect in art, and how myself and others repurpose the faded glamor of Ab-Ex as a means to probe this overlap. Serving as an allegory for my experience with the studio, Pingbongbilladingdong presents an image of the …

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 …

Fused Filament Fabrication Additive Manufacturing Of 17-4 Ph Stainless Steel: Process–Structure–Property Relationships In Magnetic Materials, Maanav Patel

Theses and Dissertations

Additive manufacturing (AM) enables the fabrication of complex metallic components through layer-by-layer processing directly from digital models. Among AM techniques, material extrusion–based processes such as fused filament fabrication (FFF) provide an accessible method for producing metal parts using filament feedstocks composed of metal powders and polymer binders. When applied to precipitation-hardening stainless steels such as 17-4 PH, the processing route and heat treatments can influence the resulting microstructure and functional properties. This work investigates the magnetic behavior of 17-4 PH stainless steel fabricated using FFF and evaluates how heat treatment conditions influence measured magnetic properties. Samples were produced and analyzed …

Commissioning & Daily Qa Of Converted Linac For Electron Flash, Tomaj Javidtash

Theses and Dissertations

Ultra-high dose rate (FLASH) radiotherapy has demonstrated promising normal tissue sparing in preclinical studies; however, the lack of standardized dosimetry, commissioning, and quality assurance (QA) methodologies remains a major barrier to its reproducible and safe implementation. In particular, conventional clinical commissioning and QA protocols are not directly applicable at FLASH dose rates due to challenges associated with detector response, dose-per-pulse effects, and beam control limitations.

This thesis presents the commissioning of a converted Varian 21EX linear accelerator for electron FLASH operation within the Division of Medical Physics at the Virginia Commonwealth University (VCU) Department of Radiation Oncology. Comprehensive beam characterization …

Within The Ruin: A Modern Brewery Rebirth, Karim Asarzadeh

Theses and Dissertations

This thesis project focuses on the revitalization of the historic ruins of the James River Steam Brewery in Richmond, Virginia. The project transforms the forgotten industrial structure into a modern brewery with a second-floor restaurant addition and community gathering spaces while preserving the historic masonry ruins. It showcases a holistic design approach that considers all aspects of the building, including its connection to the urban context and landscape, as well as its architecture, interiors, and furniture. The project demonstrates how a holistic design approach can create stronger spatial connections and more cohesive environments. In particular, it offers a strategy for …

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 …

The Effects Of Overwash On Barrier Island Evolution And Building A Barrier Island Measure Of Resistance, Beth Thomas

Theses and Dissertations

Barrier islands are critical for coastal communities, as they serve as a natural buffer against storm surge, waves, and the effects of rising sea levels, protecting life and property. These islands continuously evolve due to both normal and severe environmental conditions; global warming makes it increasingly difficult to predict the evolution of these islands due to increases in storm frequency and intensity. We present a cellular model of barrier island evolution consisting of biotic and abiotic processes including the effects of vegetation, wind, ocean currents, and gravity. The model is used to predict the future evolution of barrier islands off …

Machine Learning-Based Spatio-Temporal Modeling Of Climate Dynamics And Desertification In The Sahara–Sahel Region, Stephen M. Tivenan

Theses and Dissertations

Arid climate classifications are threshold-dependent and easily interpretable mappings that are widely used in ecological, agricultural, and climate-related studies. These classifications inform scientific understanding, support policy and land management decisions, and provide an intuitive summary of environmental conditions. Despite their usefulness, traditional arid climate classifications often fail to quantify uncertainty, incorporate spatial context, or account for complex relationships among relevant environmental variables. Existing approaches to uncertainty assessment have largely relied on comparing classifications across multiple datasets or alternative formulas, but these methods generally overlook important spatial dependence and latent structure in the data.

This dissertation develops three machine learning-based statistical …

In-Between Echoes, Jiayi Liang

Theses and Dissertations

In this dissertation, I explore memory, diaspora, labor, and intergenerational trauma through constructed photography and experimental film. Informed by Homi K. Bhabha’s concept of the Third Space, I examine how identity is shaped through displacement, cultural negotiation, and inherited memory. Drawing from my relationship with my grandmother and my experience as a Chinese woman living in diaspora, I consider labor as both survival and care, tracing how domestic gestures and emotional structures continue across generations. Through collage, reconstruction, and animation, I rework fragments of family archives, colonial landscape imagery, and personal photographs to address grief, racialized perception, belonging, and the …

Play-Based Learning In Private International Preschools In Cairo: Teachers' Perspectives, Kesha L. Stovall

Theses and Dissertations

This thesis explores how play-based learning is practiced and contextualized in private, international preschools in Cairo, Egypt through the perspective of teachers. It calls upon both historical and contemporary theories of play and play pedagogies ranging from the times of Plato and Al-Farabi to the 21st century with Montessori and Dewey. Using a contemporary theory of play presented by Stuart Lester and Wendy Russell as a guiding framework, it examines how play and play-based learning are implemented, shaped and even challenged in a Cairene context. These contexts include sociocultural factors such as parents’ expectations and aspirations, institutional barriers, teacher development …

An Examination Of The Determinants Of Audit Quality: Implications From Firms Listed In Us Stock Markets, Abdelrahman Naser Elmaria

Theses and Dissertations

The purpose of this thesis is to examine the effect of several audit determinants, namely audit tenure, non-audit to audit fees ratio, auditing firm size, and firm size, impact on audit quality. This thesis extends the existing literature on audit determinants effect on audit quality using a Generalized Linear Model, (GLM) regression with robust estimation by analyzing a sample of 446 companies from the USA in the manufacture and service sectors. This is conducted through a series of diagnostic tests to identify an appropriate regression model. Such tests include testing and checking of baseline regression models to check for multicollinearity, …

Ottoman Wikālas In Cairo: Islamic Architecture Beyond The Mosque, Yumna Moussa

Theses and Dissertations

This thesis traces one of the largest architectural typologies in Cairo: the wikāla, a type of urban caravanserai unique to Egypt. Estimated to have reached more than five hundred buildings by the 18^th century, the wikāla was the building of choice for most patrons in Ottoman Cairo. This study initially investigates the evolution of commercial architecture within the Islamic city. It then explores the defining architectural features of Cairene wikālas built between the 16^th and 18^th centuries—their plans, decorative/iconographic programs, and urban distribution—based on waqfiyyas, chronicles, travelers’ accounts, and photographic archives. Since many of …

On The Reasonableness Of Religious Belief According To W. James' "The Will To Believe" With Reference To Alvin Plantinga's “The Nature Of Necessity”, Maria Gadelrad Shenouda Nakhla

Theses and Dissertations

Analytically, I follow William James's approach in his paper "The Will to Believe" to demonstrate that holding a religious belief is reasonable and it is not incompatible with being a philosophy scholar. I do this through explaining the way James addressed the main obstacle that Clifford puts against belief (in general) which is ‘the lack of sufficient evidence’. Clifford claims that belief cannot be accepted without evidence on it.

James breaks apart this obstacle through many steps. First, analyzing the nature of belief itself, showing that belief cannot be attained based on intellectual grounds alone (which needs sufficient evidence), but …

Teachers’ Perceptions Of The Decline In Reading Scores Among Fourth- And Fifth-Grade Students, Brigetta Foules-Sims

Theses and Dissertations

The purpose of this qualitative instrumental case study was to explore teachers’ perceptions of the factors contributing to the decline in reading achievement among fourth- and fifth-grade students in a rural elementary school in a southern state. The study explored teachers’ perceptions of the causes of declining reading performance, the instructional challenges they encounter when addressing reading difficulties, and the resources and supports they believe are necessary to improve student outcomes.

Data were collected through semi structured interviews with eight certified fourth- and fifth-grade teachers. Five themes emerged from the data: (a) increasing academic demands reveal foundational reading gaps, (b) …

Trajectories Of Egyptian Women In The Us, Sageda A. Tagen

Theses and Dissertations

This thesis aimed at studying and analyzing the experiences of highly skilled Egyptian migrant women living in the US both who migrated as adults and those who migrated as children with their families. It analyzed their backgrounds prior to the migration decision, the migration decision and their legal status, the role of the family in their journey and their challenges within the social context of their workplaces. The study utilized a qualitative ethnographic lens. The study is based on ethnographic interviews with 15 highly skilled women living in the US, most of whom are concentrated in Indiana and Michigan. The …

Dimension Reduction Involving Exogenous Variables With Applications In Manufacturing And Healthcare, Linxi Li

Theses and Dissertations

High-dimensional data analysis presents diverse challenges, including the curse of dimensionality, the complexities of working with datasets that combine large feature spaces with limited sample sizes, and difficulties in identifying meaningful relationships among variables. As datasets grow in size and complexity across different fields, it is increasingly important to develop practical approaches for extracting essential information from such data. Dimension reduction methods address these challenges by alleviating the effects of high dimensionality, enhancing the ability to reveal hidden patterns, and uncovering latent structures within the data to support further analysis. Some methods reduce dimensionality while preserving all relevant information, offering …

Psychometric Evaluation Of The Treatment Integrity Instrument For Elementary School Classrooms - Observer Report: Preliminary Evidence For Construct And Discriminative Validity, Cristian J. Rivera Nales

Theses and Dissertations

Treatment integrity is the degree to which a program and its practices are delivered as intended. Treatment integrity measures are critical for evaluating the effectiveness of evidence-based programs (EBPs) in effectiveness research, but few are designed for research conducted in community settings, such as schools. The Treatment Integrity Instrument for Elementary School Classrooms – Observer Report (TIES-O) is an observational measure used to assess the treatment integrity of teachers implementing EBPs in their classrooms. This study evaluated the psychometric properties of the TIES-O, which captures Adherence (frequency and thoroughness of delivery) Competence (skillfulness of delivery), and Differentiation (the extent to …

Staging Violence With Intentionality, Toby O'Brien

Theses and Dissertations

This thesis examines the role of the fight choreographer in the theatre while addressing the potential issues staged violence has in distracting an audience from the intended narrative of the play. Avoiding the instruction manual approach of stage combat in favor of expounding on the theory of violent entertainment, I have constructed a thesis that informs the reader of certain types of violence found in both classical and modern productions and have researched the psychological ramifications of violent spectatorship and the necessity for content acknowledgements as well as consideration for the performer’s well-being. By exploring the history of violent entertainment …