Digital Commons Network^™

Exploring Llm Integration And Its Influence On Agent Behavior And Productivity In Insurance Call Centers, Gerardo L. Wibmer Gonzalez

USF Tampa Graduate Theses and Dissertations

This study investigates the theoretical impacts of supportive AI tools, specifically Large Language Models (LLMs), on agent behavior and communication dynamics in call centers. While technological advancements have streamlined operations, limited research addresses the indirect ways these tools influence agent behavior. Using frameworks like context switching—the cognitive shift required when external stimuli prompt attention shifts—and the Hawthorne effect, where perceived observation modifies behavior, we examine how LLMs shape communication patterns. In call centers, this context switching occurs indirectly as agents adapt to AI note-taking features, whereas in industries like Architecture, Engineering, and Construction (AEC), automation tools prompt more immediate changes …

The Impact Of Hearing Aid User Speech On Environment Classification And Own Voice Listener Preferences, Robert Andrew Budinsky Iii

USF Tampa Graduate Theses and Dissertations

Hearing aids (HA) have improved over the past few decades with advanced signal processing, such as environment classification and background noise reduction, but are still limited by challenges related to when the user is speaking. These challenges include the potential interference a HA user’s voice has on device environment classification and the potential influence a HA has on own voice (OV) sound quality. However, the effects of OV on HA environment classification and signal processing are not well established, nor are the desired HA program settings regarding OV listening preferences. In this study, a combination of electroacoustic and behavioral methods …

The Monsters In Twentieth And Twenty-First Century Illustrated Adaptation Of Beowulf For Children And Young Adults, Johanna Katharine Burton

USF Tampa Graduate Theses and Dissertations

I examine how some authors and illustrators of children’s and young adult literature adapt the old English Beowulf, how critics receive their works, and the functions these adaptations serve. My focus is on how the interplay between the visual and verbal text modifies or amplifies the overall story as well as how theories of translation/adaptation, monster, gender, and post-colonialism provide insight and aid in analysis. My ultimate objective is to demonstrate the significance of children’s and young adult adaptations of Beowulf and how these texts contribute to a rich and varied corpus. I argue that the adapter’s social/cultural context affected …

Communication Resilience In Suicide Prevention (Crisp): An Institutional Ethnography Of Community-Based Suicide Prevention In Florida, Kelli R. Agrawal

USF Tampa Graduate Theses and Dissertations

The concept of Communication Resilience in Suicide Prevention (CRISP) offers a conceptual framework for exploring communication strategies in community-based suicide prevention. A constructivist paradigm informs this study and utilizes an approach heavily influenced by Dorothy Smith’s critical feminist sociological work of institutional ethnography (IE). The study intentionally interweaves critical research praxis with a dual etic/emic positionality through constructivist understandings of dialectical sensemaking. It uses the Communication Theory of Resilience (CTR) and Institutional Logics Theory (ILT) as analytic tools of inquiry. The study includes purposive sampling and multiple qualitative methods, including unstructured interviews, text analyses, and observational data. Fifteen unstructured interviews …

Emergent Magnetism And Magneto-Transport Phenomena In Helimagnet-Based Heterostructures For Spin-Based Device Applications, Nivarthana Waruni Yapa Abeyrathna Yapa Mudiyanselage

USF Tampa Graduate Theses and Dissertations

The study of magnetoresistance (MR) phenomena in magnetic materials has been pivotal for advancing magnetic sensors and spintronic devices. Helimagnets, characterized by a non-collinear arrangement of magnetic moments that form a helical or spiral configuration, present an intriguing avenue for MR-based device applications. Theoretical predictions suggest that the MR magnitude in the helimagnetic (HM) regime can exceed that in the ferromagnetic (FM) regime by over an order of magnitude. However, in metallic helimagnets like manganese phosphide (MnP), the MR in the HM phase remains modest (< 10%), limiting its applicability in MR devices. This dissertation investigates the emergent magnetism and magneto-transport phenomena in nanostructured MnP helimagnets and their interfaces with ferromagnets (Fe) and ferrimagnets (Fe3O4), aiming to enhance device performance.

In the first part of the dissertation, we present a novel approach to achieve …

Links, Fit, And Sacrifice: How Job Embeddedness Impacts Work Modality And Intention To Stay In Public Accounting, Maryalice C. Trussell

USF Tampa Graduate Theses and Dissertations

Historically, the public accounting profession has applied an in-person apprenticeship model to assimilate new professionals into the culture of the firm and client service profession. The COVID-19 pandemic quickly challenged this in-person apprenticeship model in early 2020 by forcing most professionals to work remotely. Initial post-pandemic research with public accountants highlighted issues related to remote work, including a lack of social bonds with coworkers, reduced organizational socialization as well as less commitment to the firm and profession. Notwithstanding the new obstacles with COVID-induced remote work, turnover and talent shortages have been persistent challenges in public accounting.

This study is the …

Sea Surface Temperatures, The Gulf Of Mexico Loop Current, Hurricane Ian, And Their Junction, Alexander K. Nickerson

USF Tampa Graduate Theses and Dissertations

In the first chapter, a climatology was created for the deep Gulf of Mexico, West Florida Shelf, and Tampa Bay. These climatologies were compared to each other and to global temperatures. Seasonal variability is shown to be a product of bathymetry as well as latitude. In Chapter Two, using the self-organizing map neural network, patterns of the Gulf of Mexico Loop Current were analyzed to establish phases with necessary and sufficient conditions for translation from one phase to the next. Two separate patterns of evolution were established from these analyses, and empirical arguments are used to confirm the findings from …

Ai-Enabled Methodological Frameworks To Enhance The Robustness Of Machine Learning Models In Various Domains And Dynamic Environments, Mohammad Noroozi

USF Tampa Graduate Theses and Dissertations

This dissertation explores novel approaches to address complex challenges in various domains, focusing on ensuring that machine learning (ML) models can reliably detect both the data they are trained on and unseen data. Reliable detection of unfamiliar inputs is critical for deploying models in real-world applications, where performance can degrade when faced with novel or unexpected information. Each domain addressed in this work introduces a set of contributions aimed at enhancing model performance, broadening generalization through diverse training data, and improving robustness against adversarial attacks. Three sets of contributions are presented, each encapsulated in a chapter.

One of the contributions …

Characterizing The Temporal And Nearshore To Offshore Spatial Scale Of Phytoplankton Assemblages Within The Florida Keys National Marine Sanctuary, Sebastian P. Di Geronimo

USF Tampa Graduate Theses and Dissertations

This study investigates the spatial and temporal dynamics of phytoplankton communities within the Florida Keys National Marine Sanctuary (FKNMS) from 2016 to 2021. Phytoplankton biomass and community composition were analyzed across four seasons and from both Nearshore (within 2 km of shore) and Offshore (8 to 10 km from shore) locations along the Florida Keys from Miami to the Western Sambo Ecological Reserve. High-performance liquid chromatography (HPLC) quantified chlorophyll-a (tchla) as a proxy for bulk biomass, and other pigments. CHEMTAX, a chemotaxonomic identification method, was employed to estimate phytoplankton community composition. Our results revealed significant seasonal variability in bulk biomass, …

The Mediating Effect Of Self-Efficacy And Symptom Distress In The Relationship Between Symptom Occurrence And Quality Of Life Among Cancer Patients, Kailei Yan

USF Tampa Graduate Theses and Dissertations

Cancer symptoms significantly impact the quality of life (QOL) among cancer patients. Self-efficacy plays a key role in managing symptoms and improving QOL. Also, as a suffering from symptom occurrence, symptom distress predicts QOL. However, it is not clear whether self-efficacy and/or symptom distress mediate the effects of symptoms on QOL. This dissertation seeks to explore if and how self-efficacy and symptom distress mediate the relationship between symptom occurrence and QOL among 534 cancer patients. The specific aims were to: 1) test the factor structure and the longitudinal invariance of the Cancer Behavioral Inventory in our sample of cancer patients …

Satellite-Based Mapping Of Seagrass Habitats And Coastal Wetlands In The Us Gulf Of Mexico And Florida: A Remote Sensing Approach For Environmental Conservation And Management, Luis Lizcano-Sandoval

USF Tampa Graduate Theses and Dissertations

Coastal wetlands and seagrass meadows provide multiple services to nature and human society, but their spatial and temporal changes are often not well characterized. They are habitats that are threatened by natural and human causes such as changes in water quality, urban development, pollution, and climate change, among others. Coastal ecosystems rely on water quality and sea level variability for survival, and changes in those variables and their potential effects are of concern to many coastal communities. Satellite remote sensing is a powerful tool that has been used for mapping ecosystem distribution on land and in the ocean. Satellite sensors …

Targeting Tumor Microenvironmental Factors In Bladder Cancer To Enhance Responses With Immunotherapy, Sarah Bazargan

USF Tampa Graduate Theses and Dissertations

Bladder cancer is the tenth most common cancer in the world and has one of the highest recurrence rates. Despite the local delivery options and mutational status of bladder tumors, responses with immunotherapies have been limited with low durability. The bladder tumor microenvironment is enriched with highly immunosuppressive populations and harsh conditions that restrict anti-tumor immunity and subsequently attenuate immunotherapy response. We predict that targeting two of these immunosuppressive components, namely acidity and myeloid derived suppressor cells (MDSCs), will bolster T cell responses and enhance outcomes with immunotherapy. In Chapter 2, we characterized the effects of acidity on T cell …

A Case Study Of A Large School District’S High School Principals’ Instructional Decision-Making For Students With Disabilities, Laura Meehan

USF Tampa Graduate Theses and Dissertations

This dissertation is a case study of a large school district and it’s high school principals’ approach to instructional decision making for students with disabilities. This study explores how principals utilize teaching resources and make instructional decisions for students receiving special education services on their campus. Using district-wide quantitative data on special education students in high school, this study offers a comprehensive view of how these students are served. Additionally, five in-depth interviews with high school principals currently serving in the district provide qualitative insights into leadership practices. Findings from this study reveal variation in how students with disabilities are …

Evaluation Of Green Supercapacitor For Low Pass Rc Filter Implementation, Ramakrishna Kanneganti

USF Tampa Graduate Theses and Dissertations

The need for use of sustainable and eco-friendly methods and processes in electronics is the need of the hour. The demand for electronics is growing by the day, consequently the use of passive components such as capacitors, resistors, and inductors is ever growing. It is desirable to manufacture and utilize passive components that are easily disposable and are biodegradable. Our research focuses on evaluating PolyMaterials APP’s supercapacitor in RC filter circuits replacing the conventional capacitor. The evaluated supercapacitor is biodegradable and does not use any heavy or contaminating metals. In this work, we have successfully evaluated various green supercapacitor component …

Self-Doubt: Impostor Phenomenon And The Doctoral Seeking School-Based Leader, Rose Apollon-Simon

USF Tampa Graduate Theses and Dissertations

This qualitative narrative inquiry explores the experiences of school-based administrators in K-12 public school settings within the state of Florida who navigate the challenges of Impostor Phenomenon while concurrently pursuing a doctoral degree. The research draws on the personal stories of four participants—three women and one man—who are currently or previously employed as principals or assistant principals. The study focused on how participants manage the psychological tensions coming from their experiences with Impostor Phenomenon or the persistent self-doubt and the fear of being exposed as a fraud. While most Impostor Phenomenon research has concentrated on fields like business, medicine, and …

On The Role Of Prediction In Streaming Hierarchical Learning, Ramy Mounir

USF Tampa Graduate Theses and Dissertations

In today's world, AI systems need to make sense of large amounts of data as it unfolds in real-time, whether it's a video from surveillance and monitoring cameras, streams of egocentric footage, or sequences in other domains such as text or audio. The ability to break these continuous data streams into meaningful events, discover nested structures, and predict what might happen next at different levels of abstraction is crucial for applications ranging from passive surveillance systems to sensory-motor autonomous learning. However, most existing models rely heavily on large, annotated datasets with fixed data distributions and offline epoch-based training, which makes …

Zooplankton Abundance, Composition, And Diversity And Associated Environmental Factors Across The Gulf Of Mexico And Along The Northwestern Coast Of Cuba, Shaniqua J. Gladney

USF Tampa Graduate Theses and Dissertations

My research focused on characterizing the zooplankton community of two regions in the Gulf of Mexico (GOM) along two transects, one across the middle of the GOM from Tuxpan, Mexico, to St. Petersburg, FL, and one along the northwestern coast of Cuba. Zooplankton bongo samples and associated environmental and physical processes were examined. These data were collected during two Center for Integrated Modeling and Analysis of Gulf Ecosystems (C-IMAGE) expeditions aboard the R/V Weatherbird II, during September 2015 (GOM) and May 2017 (Cuba). A Zooscan imaging system was used to identify and enumerate zooplankton taxa. Then zooplankton abundance, composition, and …

Enhancing Post Silicon Visibility Using Language Modelling Techniques, Nathaniel Joseph Fender

USF Tampa Graduate Theses and Dissertations

The debugging phase is a critical time in the development of a new system on chip product. Specifically, the post-silicon validation phase is one of the most important, as it allows engineers to test the behavior of a device in a real world setting. However, the issue of noisy or incomplete data is a frequent issue when attempting to debug an SoC design during this step. This thesis examines the utility of utilizing machine learning models for the purpose of repairing missing data in a system trace. We trained various models using the transformer architecture to identify missing data in …

Predicting Human Chess Moves With Large Language Models, Benjamin Kreiger

USF Tampa Graduate Theses and Dissertations

As artificial intelligence (AI) surpasses human performance in more tasks, the interest in leveraging and collaborating with this technology for greater productivity continues to grow. However, the black-box nature of current AI can make it difficult to interpret and unsuitable to perform tasks that are more complex and require human intuition. This has led to the pursuit of AI systems that can model individual behavior. Chess offers an ideal environment to explore this task due to its complexity, structure, and the abundance of data containing unique human decision-making examples. Given that a chess game can be fully represented with text, …

Optimizing Hidden Neurons In Multilayer Perceptrons With A Hybrid Feature Selection Approach For Classification Tasks, Susmitha Boyidapu

USF Tampa Graduate Theses and Dissertations

Identifying the ideal number of hidden neurons in multilayer perceptron (MLP) networks remains an ongoing challenge in the field of machine learning. Our research presents an innovative strategy to address this issue by combining data preprocessing, feature selection by a hybrid method, and a methodical approach to MLP architecture design. The extracted features through feature selection help to construct MLP architecture and implement k-fold cross-validation along with early stopping mechanism for finding optimal number of hidden neurons. Our method's key innovation is its capacity to dynamically adjust the hidden neuron count while optimizing model performance. Through iterative refinement of the …

Patient Reported Outcomes Amidst Isolated And Concomitant Chronic Cardiopulmonary Illnesses, Walter B. Wills

USF Tampa Graduate Theses and Dissertations

As the prevalence of many chronic cardiopulmonary illnesses are expected to rise within the United States through 2030, there is a growing emphasis on investigating the patient-reported outcomes relevant to the morbidity and social burden of these diseases. Thus, the overall aim of this dissertation is to examine these outcomes among those that live with chronic obstructive pulmonary disease and cardiovascular diseases (namely, heart failure). Specifically, the works in this dissertation aimed to compare how individuals report their health-related quality of life when living with and without cardiovascular disease across the spectrum of airflow limitation demonstrated within chronic obstructive pulmonary …

Infiltration Of Immune Cells And Lipid Nanoparticle-Mediated Drug Delivery In A Skin Cancer Model, Aynur Sanem Yilmaz

USF Tampa Graduate Theses and Dissertations

Melanoma, the deadliest form of skin cancer, is notorious for its rapid mutation rate and high potential for metastasis, making effective treatment particularly challenging. Immunotherapy has emerged as a significant advancement in melanoma therapy, leveraging the immune system to target and eliminate cancer cells. These achievements have motivated further investigation into immune system-based strategies for this aggressive cancer. Cell-based drug delivery has been primarily achieved by either using immune cells as direct carriers for therapeutics or by employing active molecules through drug delivery systems, most often nanoparticles. While immune cells exhibit innate tumor-homing abilities, they face challenges such as limited …

Side-Channel Analysis Platform For A Hardware Implementation Of Fips 203 (Crystals-Kyber), Mohamed Mossad

USF Tampa Graduate Theses and Dissertations

In 2024, NIST selected the Post-Quantum Cryptography algorithm CRYSTALS-Kyber for standardization as a public-key encryption, key establishment scheme. CRYSTALS-Kyber was standardized under the Federal Information Processing Standard (FIPS), specifically FIPS 203. FIPS standards represent a set of guidelines, developed by NIST, for secure data handling in federal information systems, mandating cryptographic algorithms that protect sensitive information. This highlights the importance of identifying potential vulnerabilities in the algorithm and assessing how CRYSTALS-Kyber implementations react to hardware side channel attacks. Previous research identified several vulnerabilities in implementations of CRYSTALS-Kyber in software, which were addressed in subsequent releases. This thesis focuses on expanding …

Biodegradable And Green Controlled Release Formulations For Fertilizers, Srivalli Sriperambudur

USF Tampa Graduate Theses and Dissertations

This study aims to address environmental concerns associated with conventional fertilizers, and the persistence of synthetic polymers in soils and investigates the use of biodegradable cellulose esters as sustainable coatings for controlled-release fertilizers (CRFs). The focus is mainly on the synthesis of biodegradable cellulose esters as sustainable coatings for CRFs and applied as a coating on urea fertilizer prills to control nutrient release. The synthesized biodegradable coatings aim to provide effective nutrient delivery over time while minimizing environmental impact. Cellulose esters were synthesized using both saturated and unsaturated fatty acids, followed by crosslinking using thiols. Characterization techniques like FTIR, DSC, …

Learning Peer Support Interactions Via Bi-Lstm Graph Neural Networks For Suicide Risk Prediction, Harikrishna Marampelly

USF Tampa Graduate Theses and Dissertations

Suicide prevention through early detection using social media data has been widely studied. However, the critical role of peer support interactions among individuals with similar mental disorders has not been deeply investigated or explored. In this study, we explore peer interactions in online communities for individuals with bipolar disorder and leverage this information to predict suicide risk levels. We propose a model that uses contextualized posts and comments along with their sentiment features. By embedding these features into a peer support network, our model captures peer interactions and predicts suicide risk levels using the bidirectional LSTM Graph Neural Networks (Bi-LSTM …

The Collapse And Revival Of The Teacher Soul- A Study Of Resilience In Experienced Elementary Teachers, Joadie Durfee

USF Tampa Graduate Theses and Dissertations

Sustaining talented teachers has become a challenging worldwide pursuit. Even the most successful teachers are exiting the profession at alarming rates (Clandinin et al., 2012; Mason & Matas, 2015). Although seemingly all teachers experience highly stressful factors in the workplace, some remain and continue to thrive as they inspire and help countless students through their educational pursuits. To better understand this contrast and promote quality teachers to remain in the profession to retirement, I conducted a qualitative study of three passionate, experienced, highly effective teachers who have considered leaving the profession but ultimately decided to stay. Using interview and artifact …

Pseudomonas Aeruginosa Aggregate Formation In The Cystic Fibrosis Airway, Alexa D. Gannon

USF Tampa Graduate Theses and Dissertations

Bacterial aggregates are observed in both natural and artificial environments. In the context of disease, aggregates have been isolated from both chronic and acute infections. Pseudomonas aeruginosa (Pa) aggregates contribute significantly to chronic infections, particularly in the lungs of people with cystic fibrosis (CF). Unlike the large biofilm structures observed in vitro, Pa in CF sputum forms smaller aggregates (~10-1000 cells), and the mechanisms behind their formation remain underexplored. This study aims to identify genes essential and unique to Pa aggregate formation in a synthetic CF sputum media (SCFM2). We cultured Pa strain PAO1 in SCFM2 and LB, both with …

Vulnerability Discovery On Broadcom Devices With Qemu, Christian Shane Douglas Little

USF Tampa Graduate Theses and Dissertations

System-on-chip (SoC) devices in the form of routers, access points, and smart appliances have become an increasingly prevalent aspect of our infrastructure. Performing vulnerability research on these devices may be exceptionally difficult given the on-hardware limitations, inability to guarantee certain aspects of the system, and lack of information when the appliance’s source code is not available.In this thesis, we present Broadfeather, a QEMU-based emulation target, and framework for dynamic analysis and instrumentation. While Broadfeather supports data types shared across many chips under the Broadcom umbrella, it is primarily geared towards the BCM6755 Wi-Fi 6E capable chipset. Broadfeather also features the …

Revealing Grounding Zone And Subglacial Processes At Cosgrove Ice Shelf: Seafloor Analogs For The Modern Antarctic Ice Sheet, Rosemary E. Burkhalter-Castro

USF Tampa Graduate Theses and Dissertations

The future loss of ice in West Antarctica is one of the biggest uncertainties in projections of global sea level rise. The West Antarctic Ice Sheet (WAIS), home to Cosgrove Ice Shelf (CIS), contains enough ice to raise global sea level by more than three meters if it collapsed completely. Accurately predicting how much sea level change may occur from a future collapse of WAIS is of particular interest to low-lying, heavily populated coastal areas such as Florida. For this reason, it is important to understand the processes underpinning rapid changes and retreat at marine-terminating glaciers in the Amundsen Sea. …

Assessing The Impact Of Ai Assisted Software Development And User Experience Of A College Football Simulation Game: A Study Of Player And Industry Professional Perspectives, Augustus J. Scarlato Iii

USF Tampa Graduate Theses and Dissertations

This research examines the use of Artificial Intelligence (AI) in the design of video games, specifically the development of a college football simulation game. This study documents the creation of an alpha version college simulation game assisted by Open AI’s Chat GPT 4.0 API, to potentially improve game development, gameplay realism, and user interaction. The study then assesses how both student players and industry professionals perceive AI-enhanced gaming, emphasizing the usability, gameplay experience, and overall quality of the game using a Likert scale survey. The analysis also highlights differences in perceptions between students and industry professionals, with the latter group …