Digital Commons Network^™

The Development And Validation Of A Portable Monitoring System For Real-World Prosthetic And Orthotic Performance Assessment, Emily Wyatt

USF Tampa Graduate Theses and Dissertations

Laboratory-based motion capture systems are widely used for gait analysis but are limited by high cost, infrastructure requirements, and restricted external validity. Inertial measurement units (IMUs) offer a portable and low-cost alternative for assessing gait in both controlled and real-world environments; however, their accuracy and clinical utility require validation. The purpose of this thesis was to develop and evaluate a portable monitoring system using IMUs to quantify spatiotemporal gait parameters and gait asymmetry in both laboratory and community settings, with a focus on prosthetic and orthotic users.

Phase 1 of this study evaluated the agreement between IMU-derived gait metrics and …

Dual-Modal Tumor Imaging Using Functionalized Iron-Oxide Nanoparticles For Mri And Fluorescence, Kevin Secades

USF Tampa Graduate Theses and Dissertations

Accurate tumor imaging is essential for early cancer detection and treatment monitoring [1]. Technetium-99m (Tc-99m) is a commonly used radioisotope for medical imaging, but its reliance on gamma-ray emission poses challenges related to safety, accessibility, and regulatory constraints[2-5]. This research proposes the development of a dual-modal imaging approach by functionalizing iron-oxide nanoparticles (IONPs) with the fluorescent chromophore Cy5, enabling both MRI contrast enhancement and optical imaging for improved tumor specificity. IONPs provide strong T2-weighted MRI contrast [6], while conjugated near-infrared (NIR) chromophores allow for high-resolution fluorescence imaging [7], making this proposed system adaptable for both in vitro and in vivo …

Analysis Of The Yeast Surface Display Platform As A Tool For Tyrosine Kinase Phosphorylation Assays, Alexandra Maritza Tang

USF Tampa Graduate Theses and Dissertations

Developing and optimizing platforms to study complex protein-protein interactions is important to maintain fidelity of the modeled activity. Yeast surface display has been used as a high-throughput platform to model substrate phosphorylation by tyrosine kinases, a key enzymatic process that is essential for most cell signaling pathways. However, existing characteristics of the yeast surface display platform limit the ease-of-use, reproducibility, and feasibility of screening enzymatic modification processes like tyrosine phosphorylation. The cytoplasmic domain of T cell costimulatory receptor CD28 and lymphocyte kinase (LCK) were used as a model enzyme-substrate pair to showcase molecular cloning issues that can hinder reproducibility and …

Building Trust And Credibility In Business-To-Business Relationships: The Role Of Content Marketing Formats, Janice A. Yates

USF Tampa Graduate Theses and Dissertations

The increasing reliance on digital channels in business-to-business (B2B) purchasing has elevated content marketing as a central mechanism for building vendor relationships and influencing buyer behavior. Grounded in Relationship Management Theory, this study examines how informational quality and interactive engagement in B2B content marketing contribute to relational outcomes—trust and credibility—and subsequent purchase intent.A quantitative survey was administered to B2B professionals to assess perceptions of common content marketing formats and their influence on vendor evaluation and purchasing decisions. A total of 76 responses were collected, with 63 usable cases retained after data screening. Established multi-item scales were used to measure informational …

They Find A Way: The Transnational Practices And Experiences Of Diaspora Conflict Journalists, Grace E. Smith

USF Tampa Graduate Theses and Dissertations

As global tensions continue to rise, media landscapes are changing. Diaspora communities play an integral role in this shift, as they search for verifiable news with a global perspective to keep them informed on crises in their home countries. In order to keep their communities informed, diaspora journalists step up to localize coverage, creating transnational networks to bridge home and host countries. They often work through intense situations, sacrificing normalcy for information. Building on the framework from Ogunyemi’s (2018) diasporic media observations, Fraser’s (1992) counterpublics theory, and D.K. Thussu’s (2006) contra-flow in global media theory, this study explores how diaspora …

A Unified Non-Visual Explainable Ai Framework For Neonatal Pain Assessment, Md Imran Hossain

USF Tampa Graduate Theses and Dissertations

With the power of parallel processing, large datasets, and fast computational resources,deep neural networks (DNNs) have outperformed highly trained and experienced human experts in medical applications. However, the large global community of healthcare professionals, many of whom routinely face potentially life-or-death outcomes with complex medicolegal consequences, have yet to embrace this powerful technology. The major problem is that most current AI solutions function as a metaphorical black-box positioned between input data and output decisions without a rigorous explanation for their internal processes. With the goal of enhancing trust and improving acceptance of artificial intelligence– (AI) based technology in clinical medicine, …

Lightweight And Resilient Cryptographic Protocols For Next-Generation Networking Systems, Saif Eddine Nouma

USF Tampa Graduate Theses and Dissertations

The security of our increasingly interconnected world is strongly dependent on the strength and practicality of the cryptographic tools we deploy. As billions of embedded devices join the Internet of Things (IoT) and interact with remote cloud infrastructures for data processing, analysis, and actuation, they evolve into so-called digital twins. This rapid expansion introduces numerous attack vectors, particularly targeting constrained IoT devices, which greatly increase the attack surface and often become the root cause of large-scale infrastructure compromises. At the same time, the rise of quantum computing threatens the hardness of today’s intractability assumptions that underpin cryptographic primitives currently deployed. …

Fire And Ice: Partisan Media Coverage Of 2025 Ice Mass Deportations, Rachael A. Lawrence

USF Tampa Graduate Theses and Dissertations

This study examines how partisan media outlets strategically frame U.S. Immigration and Customs Enforcement (ICE), revealing how the same events are portrayed as fundamentally different depending on the outlet’s ideological position. Using Entman’s framing theory and qualitative frame analysis, this research analyzed 150 digital news articles from conservative-leaning (e.g., Fox News & New York Post), liberal-leaning (e.g., CNN & Associated Press) and neutral (e.g., The Hill & Newsweek) outlets over a six-month period following President Trump’s executive order expanding ICE’s operational scope.

The analysis reveals sharp partisan divides and highlights the prominence of media bias. Conservative outlets emphasized security frames …

Manufacturing Main Street: How Historic Plant City Main Street Revitalizes Its Community And Simulates The Commons, Emily Burke

USF Tampa Graduate Theses and Dissertations

Community has remained a central concern to sociology since its founding, even as industrialization, globalization, and digital media have transformed how social ties are formed and maintained. Small American downtowns once anchored civic and social life, but have faced destabilizing events like globalization, the rise of e-commerce, and the COVID-19 pandemic. In response, many small cities have turned to the national nonprofit Main Street AmericaTM to help them revitalize their downtowns. Although research on small cities is limited compared to large urban centers, emerging literature highlights post-COVID opportunities to renew physical and local shopping on main street (small city downtowns). …

Human-Ai Collaboration In Marketing Brainstorming: A Meta-Analytic Investigation Of Implementation Approaches And Creative Outcomes, Michael Michaels

USF Tampa Graduate Theses and Dissertations

Marketing organizations face intensifying pressure to sustain creative output while managing constrained resources and accelerating digital content cycles. The integration of artificial intelligence into marketing brainstorming processes presents a promising response to this challenge; however, prior to this investigation, no comprehensive quantitative synthesis had established the overall effectiveness of human-AI collaboration in marketing creativity contexts or identified optimal implementation strategies.

This dissertation presents a systematic meta-analytic investigation of AI-enhanced brainstorming effectiveness in marketing contexts. Following PRISMA guidelines, 42 independent empirical studies (N = 2,166 participants) published between 2018 and 2025 were identified across four primary academic databases, coded for implementation …

Exploring Graduate Nursing Students’ Learning Experiences, Perceived Cognitive Loads, And Attitudes Toward Immersive Virtual Reality (Ivr) In Clinical Training Environments, Pranam Parsanlal

USF Tampa Graduate Theses and Dissertations

Simulation-based education (SBE) is a widely used learning method in nursing education to develop clinical skills, while in recent years, immersive virtual reality (IVR) has become a sought-after SBE method. There is a significant need to understand how to support IVR integration. Previous research suggests exploring students’ perceptions and experiences toward IVR holistically and comprehensively to understand how to integrate IVR into nursing educational practices. This explanatory sequential mixed methods research study aimed to explore the learning experiences, perceived cognitive loads, and attitudes toward IVR of 11 graduate nursing students in an IVR clinical training environment. To explore perceptions, students …

Targeting Cancer With T Cells: Preclinical And In Silico Insights To Improve Immunotherapies, Nina Obertopp

USF Tampa Graduate Theses and Dissertations

T-cell–based immunotherapies are often constrained by limited trafficking and persistence in tumors and by functional exhaustion under chronic antigen exposure. This dissertation addresses these barriers through two distinct strategies: (i) preclinical studies testing how radiation therapy modulates tumor-infiltrating lymphocytes (TIL) therapy, and (ii) agent based modeling (ABM) to optimize treatment day treatment-free intervals (TFI) in T-cell engager (TCE) therapy. (i) In a human papillomavirus–positive (HPV⁺) head-and-neck cancer (HNC) model, a single local-dose of RT (8 Gy) delivered five days before tumor harvest increased the success and functional quality of ex vivo TIL outgrowth from tumor fragments, enriching polyfunctional CD8⁺ subsets. …

From Behind The Screen: Evaluating Teachers' Perceptions Of Online Professional Learning, Kathryn A. Rutledge

USF Tampa Graduate Theses and Dissertations

In recent years, online teacher professional learning has become a common format. However, in the large rural school district in central Florida where I work, the rising enrollment in online professional learning contrasted with declining completion rates among participants. My qualitative research study sought to explain why teachers’ perceptions of effective professional learning differ and why some teachers who enroll in asynchronous online professional learning courses fail to complete them. Using narrative inquiry, I collected data through qualitative questionnaires and semi-structured interviews with six teachers representing varied educational backgrounds. Analysis of the six participants’ interviews revealed five central themes: challenges …

Sensi-Train: Context-Aware Sensitive Content Detection Using Transformers And Large Language Models, Nazeefa Muzammil

USF Tampa Graduate Theses and Dissertations

The detection of sensitive content has become a critical task in natural language processing due to the widespread use of online platforms and the social harm caused by it. Even though current methods have advanced significantly, many of them mainly rely on surface-level text and neglect to take into consideration contextual and cultural elements that are crucial for correctly assessing sensitivity of any content to a particular individual. Due to this, implicit offense, sarcasm, and culturally grounded expressions frequently cause problems for such systems. To enable culturally grounded sensitive content detection, this thesis presents Sensi-Train, a context-rich dataset and modeling …

From The Tropics To The Poles: Chemical Investigation Of Marine Invertebrates Through Elucidation And Synthesis, Benjamin Reed Smith

USF Tampa Graduate Theses and Dissertations

Society’s perpetual need for new disease treatments continuously leans on the shouldersof willing researchers. Even in modern day, many described diseases lack a cure or a symptomatic treatment; worse yet, the necessity for new drugs is amplified with rises in drug- resistant microbial infections, such as methicillin-resistant Staphylococcus aureus (MRSA). Historically, remedies and disease treatments have been rooted in the medicinal properties of plants and animals; naturally derived analgesics, like milk of the poppy or willow bark tea, date back thousands of years. With the developments of modern medicine, drug discovery, and natural product researchers found a wealth of potential …

Adaptive Multi-Agent Intelligence: A Dynamic Data Management System For Enhanced Data Quality And Reconciliation, Anthony Taeyang Vigil

USF Tampa Graduate Theses and Dissertations

Organizations struggle with data quality problems that cost them millions of dollars annually. Manual data cleanup and standardizing, also known as reconciliation, can take skilled analysts days to complete and can still contain human errors. This dissertation addresses this challenge by developing and validating the Origin Data Management System, which automates processes that traditionally require days of manual work. The system achieved up to 100% accuracy in standardizing vendor names and identifying CEO information across real-world test datasets from Jefferson County Public Schools, Forbes, and Fortune Magazines. Processing time dropped from days to minutes—a 96-fold improvement over manual methods. These …

Ifnγ-Driven Skewing Towards Th1 Over Th17 Differentiation Underlies Crs And Neutropenia In Car-T Therapy, Payal Goala

USF Tampa Graduate Theses and Dissertations

CAR-T therapy has improved overall and complete response rates, andprolonged progression free survival of patients with relapsed/refractory hematological malignancies. The short-term and long-term impacts of anti-CD19 CAR-T products on the immune landscape of B cell malignancies has garnered considerable attention in recent years. Most notably, a subset of patients experience high-grade cytokine toxicities, including cytokine release syndrome and immune cell-associated hematologic toxicity that manifest as prolonged cytopenia. Whereas etiology of CRS is more well established, the mechanisms leading to CAR-T associated cytopenia remains elusive. Rejeski et. al. showed that severe cytopenia in patients post CAR-T treatment led to frequent infections …

The Paleoecology Of The Lower Chincha Valley, Peru Using Pollen, Phytolith, And Geomorphological Analyses, Christine L. Bergmann

USF Tampa Graduate Theses and Dissertations

This research is a part of a larger project, undertaken by the Programa Arqueológico Chincha (i.e., PACH). The focus of the project centered on the societal, economic, political, and environmental mechanisms involved in the advent of social complexity on the south coast of Peru, specifically in the Chincha Valley. PACH comprehensively studied archaeological sites in the upper, middle, and lower valleys. One of the sites studied was Pozuelo. Pozuelo is a type site located in the lower Chincha Valley (and the focus of this dissertation). Pozuelo possesses the earliest ceramics, domestic activities, and mound structures in the Chincha Valley. Furthermore, …

When Shame Leads To Silence: Leadership Style Moderates Shame, Silence, And Job Satisfaction, Andrew M. Lyman

USF Tampa Graduate Theses and Dissertations

ABSTRACT Shame is a fundamental self-conscious emotion that shapes behavior and communication in the workplace. This study examined how shame interacts with leadership styles to influence employee silence and job satisfaction. Survey data were collected from 1,500 professionals across diverse industries, and statistical analyses were conducted to test nine hypotheses. Three hypotheses were assessed through direct linear regression while six moderation hypotheses were evaluated using moderated multiple linear regression models to capture leadership style as a contextual influence.

Findings indicated that shame significantly predicted higher levels of silence and lower levels of job satisfaction. Silence was also negatively associated with …

Reducing Data Requirements In Polymer Science: Deep Neural Networks For Predicting Surface Tension Of Copolymer Compatibilizers, Md Mushfiqul Islam

USF Tampa Graduate Theses and Dissertations

In polymer chemistry, compatibilization involves adding a substance often a block or graft copolymerto stabilize polymer blends that would otherwise not mix well, leading to rough structures and weak me- chanical properties. Compatibilizers improve miscibility and reduce interfacial tension, which is critical for applications such as mixed-waste polymer recycling. Sequence-controlled polymers offer unique potential by combining the tunable chemistry of synthetic polymers with the precise, function-driven design of biological macromolecules, but unlike proteins, they lack large, evolution-shaped datasets to guide discovery. This research develops a deep learning framework to predict the surface tension of sequence-controlled copolymer compatibilizers across varying concentrations. …

Sound Practices In Human Resources: A Critical Analysis Of How Ai Applicant Screening Tools Are Used With Deaf Individuals In The Hospitality And Tourism Sector, Sherry L. Gaynor

USF Tampa Graduate Theses and Dissertations

This study explores the intersection of Career and Workforce Education, Deaf Education, and artificial intelligence (AI) technologies used in hiring practices. The purpose of this research is to identify potential barriers to equitable employment for Deaf and Hard-of-Hearing (DHH) individuals and to propose effective methods for evaluating and assessing AI and machine learning applications utilized in recruitment and selection processes. Although AI is increasingly embedded in human resource management (HRM), there remains a significant lack of research addressing its use with special populations. In particular, no prior studies have examined how voice recognition software, facial analysis, psychometric testing, and virtual …

Development And Initial Validation Of An Instrument To Measure Teachers’ Socioscientific Issues Instruction Perceptions, Michael Edward Mitchell

USF Tampa Graduate Theses and Dissertations

Little is known about how high school science teachers perceive Socioscientific Issues (SSI) on a broad scale, including what factors shape their views of a pedagogical shift to adopt SSI. To address this critical gap, I constructed the Teachers’ Socioscientific Issues (SSI) Perceptions Survey (TSPS), the first instrument specifically designed and initially validated to measure teacher perceptions of SSI integration. This study presents the development and validation of the TSPS, offering robust evidence for its reliability, fairness, and construct validity.

Survey development adhered to gold-standard psychometric protocols (Bandalos, 2018; Crocker & Algina, 1986; DeVellis, 2012; McCoach et al., 2013) and …

Surveying Secondary Ela Teachers’ Engagement With Ai-Powered Tools For Classroom Assessment, Mona Alrashidi

USF Tampa Graduate Theses and Dissertations

The integration of Artificial Intelligence (AI) presents profound challenges andpossibilities for educational assessment, particularly in English Language Arts (ELA), where AI- powered tools can generate the very linguistic products traditionally used as evidence of student learning. While scholarship has primarily explored theoretical frameworks and broad perceptions, a critical gap remains in understanding how secondary ELA teachers navigate and report AI integration within formative assessment workflows. This understanding is essential: formative assessment has been recommended as a strategy to mitigate AI-related challenges by prioritizing learning processes over products. Yet empirical evidence of teachers’ practices remains limited.

This exploratory study surveyed 102 …

Thermal Properties Of Novel Materials, Wilarachchige D.C. Bhagya Gunatilleke

USF Tampa Graduate Theses and Dissertations

Thermal properties play an important role in various aspects of applications of technology startingfrom the materials property determinations to device performance improvements and their safety and stability. Measurements of the thermal properties of such materials of interest pose challenges due to the demands of these measurements for determination of intrinsic materials properties. The research included in this dissertation involved both synthesis of novel materials and their measurement of thermal properties. Solid-state materials synthesis involves various synthesis and processing techniques, while specific technological applications demand synthesis of defect-free single crystals. Such synthesis techniques were explored for the research included in this …

Mathematics And Growth Mindset: A Systematic Review And Meta-Analysis Of Interventions At The Post-Secondary Level, Sean E. Murphy

USF Tampa Graduate Theses and Dissertations

Growth mindset interventions have been implemented in academic settings for over three decades (C. S. Dweck et al., 1995a). One academic field where growth mindset may be most needed is mathematics, as it is not unusual for a student to claim, “I’m not a math person.” Notably, no meta-analysis of mindset interventions in post-secondary mathematics classrooms existed prior to the current study. To close this gap in the literature, the present study included a systematic review and meta-analysis, drawing on two search methods: Boolean and snowballing. The results from both methods were screened using inclusion/exclusion criteria. Snowballing search was hypothesized …

Middle School Counselors' Perceptions Of Meeting Career Counseling Needs Of Middle School Students, Mario Oscar Garcia

USF Tampa Graduate Theses and Dissertations

This dissertation examined middle school counselors' perceptions of their effectiveness in delivering career counseling to students. Middle school is a pivotal time for career exploration and planning, yet disparities in guidance persist, particularly for students not on a traditional college pathway. Guided by the American School Counselor Association (ASCA) National Model, this study employed a survey method. An online survey developed by the researcher assessed counselors' time allocation across academic, career, social-emotional, and duties unrelated to their essential school counseling roles. Additionally, the survey inquired about counselors’ perceived effectiveness in meeting the career needs of diverse student populations (advanced academic, …

A Multi-Faceted Study Of Antibiotic-Resistant, Opportunistic Pathogens In Wastewater And Environmental Water, Jeanette Calarco

USF Tampa Graduate Theses and Dissertations

More than 2.8 million infections due to antibiotic-resistant bacteria occur annually in the United States, and more than 35,000 people die as a result. Domestic wastewater (sewage), which contains antibiotic-resistant bacteria and antibiotic resistance genes, is collected at treatment plants for removal of contaminants, e.g. pathogenic microorganisms and nutrients. While wastewater treatment is designed to remove antibiotic-resistant bacteria and other microorganisms through treatment and disinfection, some bacteria may escape treatment. Treated wastewater effluent is generally discharged into surface waters; however, some fraction of the effluent may be used as recycled water. Compromised wastewater collection infrastructure and sewage spills can disseminate …

Enhancing Nitrogen Removal In High Permeability Bioretention Media: The Combined Role Of Biochar, Wood Chips And Hydraulic Design, Joshelyn Guimaray

USF Tampa Graduate Theses and Dissertations

Urban stormwater runoff can transport high nutrient loads to receiving waters, leading toeutrophication, harmful algal blooms, and the formation of hypoxic zones. Bioretention systems are a form of green infrastructure designed to mitigate these impacts, but their application in dense, ultra-urban environments is often limited by large land area requirements. This has led to the adoption of high permeability media (HPM) to accommodate higher hydraulic loading rates (HLRs) and reduce the system footprint. However, conventional HPM systems often show inconsistent removal of dissolved nitrogen species due to short hydraulic retention times (HRTs), a lack of organic carbon, and insufficient anoxic …

Improving Coral Restoration Outcomes Through Novel Molecular Applications, Matthew H. Gamache

USF Tampa Graduate Theses and Dissertations

Coral reef ecosystems are declining globally from numerous stressors, including localized pollution, disease, and marine heatwaves induced by climate change. To preserve these ecosystems, it is critical to identify corals that can withstand stressors—primarily future marine heatwaves—and prioritize them for coral restoration efforts until these stressors are mitigated. Coral responses to thermal stress can be influenced by several partners, including mutualistic microalgae and a vast prokaryotic community. Here, I use advanced molecular techniques to examine which partners (coral host, algal symbiont, and microbial communities) are associated with coral health, how they contribute to holobiont physiology, and their potential to increase …

Advancing Power System Reliability And Security With Efficient And Resilient Graph Neural Network Frameworks, Seyed Hamed Haghshenas

USF Tampa Graduate Theses and Dissertations

Enhancing the reliability and security of smart grids is critical for ensuring their seamless operation and resilience against disruptions. The increasing integration of distributed energy resources, advanced measurement devices, and cyber-physical elements introduces both opportunities and challenges for grid management. While these advancements provide enhanced visibility and operational control, they also expose the grid to vulnerabilities from cyber-physical stresses, such as cyber-attacks, equipment failures, and fluctuating power demands. Traditional methods for reliability assessment and threat detection often rely on model-based approaches that struggle to adapt to the complexity and dynamic nature of modern smart grids. These limitations necessitate novel data-driven …