Digital Commons Network^™

On The Suppression Of Vortex Shedding Within A Supersonic Dual–Stream Rectangular Nozzle, Matthew Anthony Qualters

Dissertations - ALL

Within an experimental rectangular dual-stream supersonic nozzle, a vortex-shedding instability forms at the blunt trailing edge of the splitter plate separating the Mach = 1.23 core flow and Mach = 1.0 bypass flow, with the combined jet further expanded to Mach = 1.6. This instability generates large coherent vortical structures that interact with the downstream recompression shock, inducing oscillations and producing high-frequency acoustic radiation that dominates both the near- and far-field. Active and passive control techniques are applied to suppress the formation of energetic, periodic vortex shedding and thus reduce or eliminate its effects on the flow field. Three control …

Press To End Nightmare: Technology, Disfigured Labor, And Retail Grocery Work, Katherine Mott

Dissertations - ALL

This study attends to the lived experiences of retail grocery customer service workers to examine how economic forces, namely the growth of online retail and technological advancements in information systems and data collection, are reshaping retail work. It draws upon in-depth interviews, content analysis, and eight months of participant observation working alongside predominantly college-educated customer service workers at Whole Foods Market, an upscale retail grocery chain with hundreds of locations across the United States, Canada, and the United Kingdom. Prior to the 2010s, Whole Foods Market’s decentralized management structure successfully deployed a hegemonic “post-industrial work ethic” rooted in environmentalism, organic …

"That Has Been My Entire Life Of Being Invalidated," Lgbtq+ And Poor: Experiences Of Cis-Heteronormativity And Neoliberal Poverty Governance In Cities In Upstate New York, Dustin J. Satterfield

Dissertations - ALL

Social welfare provision in the United States is neoliberal, punitive, and more about controlling people than alleviating poverty. Poor people are highly regulated by the state through welfare provision, with social welfare supports reserved for “the deserving poor” (Soss et al. 2011; Katz 2013; Hughes 2019; Purser and Hennigan 2019). Poverty is viewed as a personal moral failing and those seeking benefits must demonstrate their deservedness to be approved. Simultaneously, LGBTQ+ individuals in the US are at higher risk of experiencing poverty than the general US population (DeFilippis 2016; Badgett 2018; James 2016). Queer and trans people are more likely …

A Study On Gender Equality And Geographic Homogeneity In Education And Their Association With Midlife Suicide, Julene Kemp Cooney

Dissertations - ALL

ABSTRACT Suicide consistently ranks among the top five causes of death for the U.S. population aged 25-64, and suicide rates have been rising in the United States since 2000. Although targeted efforts have been made to reduce suicide deaths among high-risk individuals, the upstream, or “contextual,” causes of poor mental health that drive suicidal ideation and completion are fueling a national mental health crisis that is overwhelming available mental health resources, resulting in a significant and needless loss of life. This three-chapter dissertation examines how suicide rates among midlife adults in the United States are associated with several upstream contexts …

Peptide And Peptide Bioconjugate Based Drug Development For The Treatment Of Metabolic Diseases, Nancy Cham

Dissertations - ALL

The Doyle group has coined the term ‘corrination’ to describe the conjugate modification of a peptide, protein, small molecule, or radionuclide with a corrin ring-containing molecule such as cobalamin, also known as vitamin B12 (B12), or cobinamides. By exploiting the innate chemico-physical properties of corrin ring-containing compounds, both in general and specifically via the innate dietary B12 uptake pathway in mammals, corrination has been explored for drug development and targeted/localized delivery of probes and therapeutics. Most recently, it is in the field of peptide-based therapeutics that corrination is generating significant interest, no doubt driven in part by the recent successes …

Three Essays On Social Security Retirement Age Reform And Its Implications For Older Adults, Halim Yoon

Dissertations - ALL

Rising life expectancy and declining fertility rates have led to rapid population aging in many countries. To address the resulting fiscal pressures on social insurance programs and encourage longer labor force participation among older adults, many countries have reformed their public pension systems. In the United States, the Social Security Amendments of 1983 gradually increased the Full Retirement Age (FRA)—the age of eligibility for full, unreduced Social Security benefits—from 65 to 67. While prior research has extensively examined whether this reform delayed Social Security claiming and retirement, much less is known about its broader and longer-term consequences for well-being, including …

Image Restoration Regularized By Structured Sparsity Promoting Functions: Theory, Algorithms, And Applications, Jianchen Wei

Dissertations - ALL

Image restoration aims to recover an unknown clean image from observations degraded by blur, subsampling, missing pixels, or noise. This dissertation develops and analyzes variational image restoration models based on structured sparsity promoting functions (SSPFs) and their Moreau-enveloped regularization. The main objective is to design nonconvex regularization models that promote structured sparsity in transformed image representations while remaining analytically tractable and computationally effective. The first part of the dissertation studies an SSPF regularized image restoration model. Under the identifiability condition $\ker(A)\cap \ker(B)=\{\bm0\}$, where $A$ is a linear forward degradation operator and $B$ is a transform operator used to extract image …

Marble Bodies: Sculpture, Gender, Race, And Nineteenth-Century U.S. Literature, Madeline Olley

Dissertations - ALL

Marble Bodies reads across both literary texts and sculptures to ask how sculptural logic operates across forms to reveal what sculptors and sculpture offer the field of nineteenth-century U.S. literary studies—formally, theoretically, and methodologically. It argues that sculpture functions not merely as subject matter within nineteenth-century American literature but as an interpretive framework that reveals how bodies are objectified, valued, and assigned cultural meaning. With attention to the formal and material properties of sculpture—stillness, smoothness, and duration—and to the questions of ideality, valuation, and preservation that sculpture generates, this dissertation shows how nineteenth-century writers and artists found in those properties …

Aging Alone In Malaysia: Social Challenges And Legal Protections, Jal Zabdi Mohd Yusoff, Zulazhar Tahir, Siti Zaharah Jamaluddin

Hasanuddin Law Review

According to The Japan Times, nearly 28,000 elderly individuals in Japan will die alone in the first half of 2024. This alarming trend is not unique to Japan; many countries, including Malaysia, are facing the challenges of an aging population. As Malaysia approaches becoming an aging nation, issues affecting the elderly, particularly those living alone, demand urgent attention. While not all elderly people face the same circumstances, some enjoy stable finances or live with their family, while others live in isolation due to various factors, such as remaining unmarried, widowhood, or estranged familial ties. Some are simply separated by their …

Examining Nitrate Concentrations In Rainwater In The Marine Boundary Layer In St. Petersburg, Sam Irvine, Anson Kirsch, Ben Lloyd '25, Yasin Elshorbany, James Ivey

Student Research

Harmful algae blooms (HABs) are a common, natural phenomenon that occur in bodies of water. Karenia brevis is an algae species where, in excess, it can result in red tide events which deplete nutrients in the area, impacting aquatic life and releasing toxic gasses. Past research shows that K. brevis can grow through nutrient absorption in response to excess nitrate in water. This project sought to examine whether nitrates from rainfall are responsible for creating an increase in nitrogen concentrations in the water surrounding St. Petersburg which can lead to algae bloom growth. Results showed that rainwater has higher concentrations …

U.S. Service Member To Counseling Student, Nicole Marie Arcuri-Sanders, Kellie Forziat-Pytel

Educational Sciences and Organizations

This qualitative descriptive study examines the absence of military career pathways for licensed mental health counselors (MHCs) and the impact of this structural limitation on service members' career transitions. Findings indicate that both combat and non-combat veterans pursued mental health counseling due to personal service-related mental health experiences and dissatisfaction with available care while in service. Despite these challenges, many participants expressed a strong desire to continue serving their country as professional counselors. Over half of the participants reported separating from the military because no occupational role existed for licensed MHCs. At the same time, most indicated they would have …

Seeing Is Believing: Mental Imagery Amplifies Moral, Emotional, And Motivational Responding To Mentally Constructed Hypothetical Events, Julie L. Ji, Adam S. Radomsky, Jackie Andrade

School of Psychology

Mental imagery is theorised to support important mental simulation processes, yet there remains little direct evidence of its functional impact on affective, moral, and motivation outcomes. This study examined whether the ability to generate visual mental imagery amplifies “as-if-real” responding to a mentally constructed harm event. Using a modified laboratory harm provocation paradigm, Aphantasics (individuals with no or minimal visual imagery; N = 32) and Visualisers (those with normal to high imagery ability; N = 48) were asked to write down the sentence “I hope [name of a loved one] is in a car accident”, followed by instructed mental simulation …

The Multitargeted Cellular Spectrum Of Quercetin: Ameliorating Xenobiotic Toxicities And Metabolic Disorders, Wissam Sajid Hashim

Muthanna Medical Journal

Quercetin, a prominent dietary flavonol, exhibits a diverse range of biological activities that extend beyond simple free-radical scavenging, encompassing vital cytoprotective, membrane-stabilizing, and metabolic-regulatory properties.¹ This comprehensive review elucidates the multifaceted pharmacological spectrum of quercetin in restoring physiological homeostasis under conditions of xenobiotic insults and metabolic stress.² Specifically, we synthesize experimental and clinical evidence—including pivotal comparative studies to demonstrate quercetin's exceptional capacity to regulate systemic lipid profiles, preserve hemorheological parameters, and maintain cellular membrane integrity across vital systems.^3,4 Furthermore, this review highlights the therapeutic efficacy of quercetin in mitigating industrial and environmental xenobiotic-induced toxicities, with particular emphasis …

Rethinking African Security In The Anthropocene: An Alternative Framework, Hamdy A. Hassan

All Works

Introduction – Traditional approaches to African security often treat neocolonialism, governance failures, and terrorism as isolated issues, obscuring their systemic interconnections under Anthropocene conditions of human-induced environmental change. This study argues that African security should be reconceptualized in light of climate change, resource depletion, and ecosystem degradation, as these dynamics reshape the continent's collective security arrangements. Methods – This research combines critical analysis of African collective security mechanisms, focusing on the African Union and the African Peace and Security Architecture, with qualitative evidence from 15 unstructured interviews conducted in Mali, Nigeria, and Egypt between July and October 2025. Thematic qualitative …

Binding Energy Of Muonic Beryllium: Perturbative Versus All-Order Calculations, Shikha Rathi, Ulrich D. Jentschura, Paul Indelicato, Ben Ohayon

Physics Faculty Research & Creative Works

We compute the ground-state binding energy of muonic (Formula presented) (Formula presented) Be in two ways: first, the fully perturbative treatment of the nuclear-size effect often employed in light systems, and second, an approach that accounts for the finite-nuclear-size to all orders (and is inspired by calculations otherwise employed for heavy muonic ions). The results are compared term by term and show that both approaches agree to better than one part-per-million of the total energy. The objective of this work is twofold. The first is practical: to provide a parameterization that allows the extraction of the (Formula presented) (Formula presented) …

Client Communication Strategy Pitch Deck, Staci Thomas

Generative AI Teaching Activities

Business Client Communication Strategy - Pitch Deck

Trauma-Informed Care In Residential Settings: Staff Perceptions And The Impact Of The Prevent-Teach-Reinforce Model With Trauma-Informed Principles, Marissa L. Del Vecchio

USF Tampa Graduate Theses and Dissertations

Trauma-informed care (TIC) has been recognized as a critical framework for supporting individuals on the autism spectrum, intellectual and developmental disabilities (I/DD) and those within residential facilities given their heightened risk for experiencing adverse events, including trauma. However, the development and evaluation of a trauma-informed behavior analytic assessment and intervention approach is lacking. Although behavior analysts frequently target behaviors associated with trauma, research suggests that many practitioners have limited training, supervision and competence in TIC, despite widespread recognition of its importance. The Prevent-Teach-Reinforce (PTR) model may be a promising approach to address these limitations, as its practices align closely with …

Multi-Modal Survival Prediction On Breast Cancer Mammograms And Enabling Multi-Institutional Collaborations With Federated Learning, Nikolas Koutsoubis

USF Tampa Graduate Theses and Dissertations

Cancer remains one of the leading causes of mortality worldwide, and machine learning is well positioned to leverage the large volumes of routinely collected clinical and imaging data to improve patient outcomes. Realizing this potential at scale requires three capabilities that current practice does not yet deliver in combination: models that integrate the multiple data modalities clinicians use, training procedures that respect institutional data-sharing constraints, and tooling that enables sharing of de-identified data when federated approaches are not sufficient. This dissertation develops methods and infrastructure addressing each of these capabilities in the context of breast cancer and oncology more broadly. …

Testimonios From Latine Educational Leaders Supporting Youth Development Programs, Luis E. Feliciano

USF Tampa Graduate Theses and Dissertations

The United States has been experiencing a demographic change for the last twenty years representing a rise in both Latiné students and families. Despite this demographic change, Latiné folk remain widely underrepresented in school leadership, and furthermore underrepresented in specific Youth Development Programs (YDPs), with the relationship between educational leaders and YDPs being widely unexplored in academia. This study sought to bridge the gap between YDPs and educational leadership, specifically for Latiné folk by asking how Latiné educational leaders used their cultural heritage to encourage YDP development. To accomplish this a testimonio methodology was implemented via a two staged interview …

Evaluating The Role Of Individual Differences: Impact On Fruit And Vegetable Intake Outcomes In Nourish-T+ Caregivers Of Pediatric Cancer Survivors, Sandra Soca Lozano

USF Tampa Graduate Theses and Dissertations

Pediatric cancer survivors are at increased risk for obesity and related long-term health complications, highlighting the need for interventions promoting healthy lifestyle behaviors during survivorship. The present study examined caregivers’ fruit and vegetable intake in the full NOURISH-T+ intervention and evaluated whether their dietary outcomes changed from baseline to the 3-month post-assessment and differed by selected caregiver sociodemographic characteristics. The study also examined whether these characteristics accounted for variance in 3-month fruit and vegetable outcomes. Participants included 68 caregivers in the full NOURISH-T+ condition who completed both baseline and 3-month post-assessments. Fruit and vegetable intake was assessed using the Healthy …

Marshallese Female Caregivers’ Intention To Seek Pediatric Care For Their Children, Ages 2–5, With A Body Mass Index At Or Above The 95th Percentile, Living In Northwest Arkansas, Madicyn Huddleston Freeman

Walden Dissertations and Doctoral Studies

No abstract provided.

Uncovering New Insights Through Young Children's Voices: A Qualitative Research Meta-Synthesis On Practicing Mindfulness At School, Elizabeth J Erwin, Mj Palombo, Meredith Valentine, Laura A Clark

Department of Teaching and Learning Scholarship and Creative Works

The intention guiding the design of this study was to amplify and listen to children's voices in early years research. The aim of this qualitative research meta-synthesis was to engage in new analyses and interpretations about mindfulness through the lens of young children. Our research question emerged as a result of a gap in the literature about the importance of young children as the experts in their own lives, and the absence of a collective understanding about their first-hand perspectives about mindfulness practices in school. We critically examined findings from eight studies using a distinct seven-stage qualitative research meta-synthesis process, …

Spatial Capital Dynamics Examining Ecological Distribution Conflicts Within The Electric Vehicle Supply-And-Consumption Chain, Alice Piva, Anna Kondi, Beatriz Couto, Chaitaly Deshpande, Dieudonné E. Da Costa, John Smith, Josephine Agbeko, Et Al.

Michigan Tech Publications

Energy transitions are often celebrated as pathways to a greener future. Yet, they frequently reproduce spatially uneven burdens and patterns of dispossession, particularly affecting marginalised communities from the Global South. While climate justice debates have advanced, their spatial dimension has received comparatively less systematic attention. This paper documents an experimental use of spatial capital as a lens to analyse how green transitions reshape territorial agency and reinforce spatial inequalities. The three case studies across the electric vehicle chain show how spatial capital illustrates the sustainability agenda’s capacity to reshape people’s ability to access, inhabit, and act within their territories.

Hybrid Patrol–Staging Optimization For Freeway Service Patrols Under Cost Control: A Deterministic Milp With Dynamic Segment Adjustment & Environmental Co-Benefit, Mauricio Micolta

Electronic Theses and Dissertations 2020 - Present

Freeway Service Patrol (FSP) programs are central to Traffic Incident Management (TIM), delivering rapid response, clearance, and motorist assistance on high-volume corridors. The prevailing continuous roaming patrol model provides broad coverage but generates substantial non-productive vehicle-miles traveled (VMT), increases responders’ exposure to risk, and treats Service Level Agreement (SLA) compliance as a statistical outcome rather than a fixed operational constraint. Existing literature lacks a framework that simultaneously optimizes corridor segmentation, jointly deploys patrol and staged units across space, time, and direction, and enforces response-time SLA as a binding constraint.

This dissertation introduces the Segmental-Spatio-Temporal Hybrid Service Model (SSTHSM), a two-tier …

Pre-Freudian Recurrence: Photography And The Trace Before The Uncanny, Iwan Zahar, Karna Mustaqim, Salman Maulana, Irma Damayantie, Tri Wahyudi

Bahasa dan Seni: Jurnal Bahasa, Sastra, Seni, dan Pengajarannya

This practice-led research proposes recurrence as a systematic photographic method, where Derrida's concept of iterability is achieved through controlled visual iteration. Through recurrence, identical objects undergo transformation across iterations because variations in light, motion and environmental conditions produce perceptual instability rather than visual sameness. This process produces uncanny effects identifiable through perceptual ambiguity (Jentsch), environmental transformation and reappearance of overlooked materials (Schelling). The work engages pre-Freudian concepts of the uncanny - Jentsch's intellectual uncertainty and Schelling's definition of the uncanny as ``something that should have remained hidden but has returned to light.'' Waste materials, typically ignored or excluded from conscious …

Application Of Ai Risk Prediction Tools For Cardiovascular Care In Hong Kong: A Systematic Review With Insights From Clinicians, Celine Sze Ling Chui, Celia Jiaxi Lin, Ruibang Luo, Yekai Zhou, Nadeem Qureshi, Li Wah Tam, Carmen Chan, Ian Chi Kei Wong, Kai Hang Yiu, P-Cardiac Consortium

Journal of the Hong Kong College of Cardiology

Background: Cardiovascular diseases (CVD) present a substantial burden on global and local healthcare systems, particularly within Hong Kong's overstretched public secondary care settings coupled with an aging population. The Personalized CARdiovascular DIsease risk Assessment for Chinese (P-CARDIAC), a locally developed and validated artificial intelligence (AI) powered cardiovascular risk assessment tool, offers a transformative opportunity for enhancing care through systematic risk prediction and a multidisciplinary care approach. Implementation strategies for its application in secondary care remain undefined. Methods: We gathered local insights from one expert meeting and thirteen semi-structured interviews with cardiologists and pharmacists, matched these with barriers and respective facilitators …

Evaluation And Risk Stratification Of Ventricular Premature Complexes In Athletes: Practical Considerations For Differentiating Benign From Malignant Arrhythmias, Jacky Kit Chan, Erik Fung

Journal of the Hong Kong College of Cardiology

Ventricular premature complexes (VPCs) are common in athletes, but distinguishing benign VPCs from malignant arrhythmias remains a clinical challenge. This review summarizes current evidence on VPC evaluation and risk stratification in athletes, emphasizing electrocardiographic (ECG) features, burden, morphology, coupling interval, and exercise response. While VPC prevalence in athletes mirrors the general population, high-risk features–such as non-fascicular, non-outflow tract morphologies (e.g., superior axis or wide QRS), short coupling intervals (<300 ms), and VPC exacerbation during exercise - correlate with underlying structural heart disease (e.g.,arrhythmogenic cardiomyopathy, idiopathic left ventricular scar) and adverse outcomes. Guideline-directed assessment recommends comprehensive evaluation for athletes with high VPC burden (>10%), complex arrhythmias, or abnormal imaging. Key findings include: (1) VPC-induced cardiomyopathy risk rises with burden >5–10%, though low-burden VPCs may still indicate arrhythmogenic substrates; (2) uncommon morphologies (e.g., non-fascicular, non-outflow …

Anisotropic Second-Harmonic Generation In Superconducting Nanostructures, Sara Memarzadeh, Maciej Krawczyk, Armen Gulian, Jarosław W. Kłos

Mathematics, Physics, and Computer Science Faculty Articles and Research

Circuits based on superconducting nanostructures are among the most promising platforms for quantum computing. Understanding how device geometry governs nonlinear electrodynamics is crucial for implementing superconducting quantum technologies. However, to date, research has largely been limited to superconducting nanostructures with collinearly aligned static and dynamic applied magnetic fields. Here, we analyze the dynamics of Meissner currents and Abrikosov vortices in a superconducting nanocube exposed to combined static and microwave magnetic fields, extending the analysis to a more general excitation geometry. We demonstrate that, in a noncollinear configuration, the magnetization component parallel to the static field develops a dominant second-harmonic response …

Examining Public Perceptions Of Source Credibility In Mental And Physical Health Communication, Bailey Fraser Dr, Joanna Pozzulo Dr., Emily Pica Dr.

Journal of Social, Behavioral, and Health Sciences

Surveys in Canada and the United States have indicated declines in subjective well-being alongside growing public interest in improving personal health. With increased availability of credible and non-credible health information, particularly online, it is important to understand how the public perceives the credibility of various information sources for physical and mental health information. The present research is the first known study to directly compare perceptions of source credibility across mental versus physical health contexts and to examine associated information-seeking behaviors. Results indicated that participants consistently rated professional sources as more credible than layperson sources and perceived meaningful differences in the …

Optimized Multi-Criteria Routing Algorithm For Durable Wireless Sensor Networks, Ghaihab H. Adday, Maha S. Abdulridha, Hasanain A. Alsreeh, Taj-Aldeen N. Abdali

Baghdad Science Journal

The Internet of Things and the Fourth Industrial Revolution (IR 4.0) rely on Wireless Sensor Networks (WSNs) as their underlying infrastructure. WSNs have recently attracted significant attention due to their crucial applications, such as monitoring applications. Geographic routing algorithms are widely used in WSNs because event location is often more critical than node identification. However, these algorithms still face challenges, such as workload imbalance and high energy consumption. Energy consumption is particularly vital in WSNs due to the sensor nodes' limited power resources. This work proposed an enhanced geographic routing algorithm based on the Technique for Order of Preference by …