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Reproductive Trends Of Male Atlantic Spotted Dolphins (Stenella Frontalis) Following Two Hurricanes In The Bahamas, Tara Southerland Pedersen

USF Tampa Graduate Theses and Dissertations

Marine mammals are impacted by hurricanes that may influence reproductive success and genetic diversity. Understanding how populations respond to demographic change is increasingly important as extreme weather events become more frequent. A population of Atlantic spotted dolphins (Stenella frontalis) on Little Bahama Bank in the Bahamas has been observed continuously since 1985. In 2004, two hurricanes struck the region within one month, resulting in the loss of approximately 36% of the population. Population declines can alter the operational sex ratio (OSR), social structure, and encounter rates among potential mates, potentially influencing patterns of reproductive success. Previous molecular studies showed that …

Photophysical Behavior Of Ruthenium-Based Complexes: A Study Of Ligand Variation And Encapsulation In Metal-Organic Frameworks, Delaney S. Sellers

USF Tampa Graduate Theses and Dissertations

Ruthenium (II) polypyridyl complexes have emerged as a prominent class of compounds in inorganic photochemistry due to their structural robustness, reversible redox chemistry, and tunable excited-state dynamics. Central to the investigation of these systems is the ability to manipulate the triplet metal-to-ligand charge transfer state (3MLCT). In the context of photoactivated chemotherapy (PACT), the strategic deactivation of this MLCT state to populate a dissociative triplet ligand field state (3LF) can enable the controlled, light-triggered release of caged cytotoxic agents. This work focuses on understanding the caging mechanism of various ligands to optimize the eventual delivery of cytotoxic ligands. In this …

Development Of A Coupled Hydrological-Nitrogen Modeling Framework For Urban Stormwater Pond Analysis, Tione Grant

USF Tampa Graduate Theses and Dissertations

Urbanization impacts the hydrological and biogeochemical processes that regulate water quality in downstream ecosystems, leading to increased stormwater volume and nitrogen loads in receiving aquatic environments. Although stormwater ponds are designed as simple hydraulic storage basins, they function more like managed ecosystems within urban drainage systems, offering both hydraulic attenuation and passive nutrient treatment. However, nitrogen removal efficiency varies significantly and depends on interactions between hydrological and biogeochemical factors. This thesis details the development, calibration, validation, and sensitivity analysis of a coupled hydrological-nitrogen model framework for Aaran’s Pond, an urban stormwater pond in Hillsborough County, Florida.

A process-based water budget …

Under Pressure: Effects Of The Hot Docs Behavioral Parent Training Program On Caregiver Blood Pressure, Bria N. Ferera

USF Tampa Graduate Theses and Dissertations

Chronic stress is heightened for caregivers of children with heightened disruptive behaviors. With chronic stress supported as a major factor leading to maladaptive parenting and caregiving practices, exploring new ways to collect data on parenting stress remains a critical research priority (van der Lubbe et al., 2024). Behavioral Parent Training (BPT) programs are linked to improved parent-child relationships and reduced problem behavior (Armstrong, 2006; Agazzi, 2021; Patrusky, 2025). However, few studies have used physiological biomarkers in conjunction with self-reported measures to explore connections in this area. Similarly, other physiological considerations are rarely considered upon evaluation of the impacts of BPT …

Trophic Structure Of Reef-Fish Assemblages In The Eastern Gulf Of Mexico Varies By Depth And Reef Type, Jessica L. Van Vaerenbergh

USF Tampa Graduate Theses and Dissertations

Globally, marine ecosystems are increasingly threatened by anthropogenic stressors, leading to reef degradation, changes in reef-fish assemblages, and altered trophic structure. In this study, I investigated reef-fish underwater visual survey data collected over a decade (2013-2023) from paired natural and artificial reefs in the eastern Gulf of Mexico. I applied the novel Normalized Reef Status Index (NRSI) to evaluate how biomass was distributed across the three trophic categories (i.e., Lower Trophic Position (LTP; 2.0-2.9), Central Trophic Position (CTP; 3.0-3.9), and Upper Trophic Position (UTP; ≥4.0). This index is a metric to assess the ecological status of reef systems by investigating …

Development And Evaluation Of The East Florida Coastal Ocean Model (Efcom), Orion B. Scharton-Witmer

USF Tampa Graduate Theses and Dissertations

Florida’s Atlantic coast has abundant resources in beaches, state parks, aquatic preserves, and wildlife refuges as well as densely populated coastal cities in low lying areas that are all subjected to natural disaster threats from the oceans. There is an urgent need for a high-resolution coastal ocean circulation model for this region. Based on the application of the Finite Volume Community Ocean Model (FVCOM), an East Florida Coastal Ocean Model (EFCOM) is developed, downscaling from the deep ocean, across the continental shelf, and into the estuaries. It employs an unstructured grid with horizontal resolution varying from 3 kilometers at the …

Where Diagnosis Meets Daily Life: Testing Theoretical Models Of Social Anxiety, Jessica A. Birg

USF Tampa Graduate Theses and Dissertations

Social anxiety disorder (SAD) is thought to persist through self-reinforcing cycles linking threat perception, fear of evaluation, avoidance, and social behavior. This dissertation examined whether the nature of these daily processes generalize across individuals, cluster into subgroups, or vary by social anxiety severity. Two ecological momentary assessment (EMA) studies were conducted: a community sample with and without SAD (Study 1: N = 96; five prompts per day across two 14-day bursts) and an undergraduate sample (Study 2: N = 129; six prompts per day across 14 days). Momentary variables included social anxiety, avoidance motivation, and threat and safety cues (hurt …

A System Dynamics Perspective Of User Adaptation: The Case Of Exoskeleton Technology, Enzo Novi Migliano

USF Tampa Graduate Theses and Dissertations

Technology implementation is a common occurrence in organizations to which workers must adapt. Although research on workers' technology acceptance is widely spread, research on the workers' technology adaptation process is less represented in the literature. The discrepancy in the literature permeates research on new technologies currently being implemented in organizations, such as occupational exoskeletons. As in other technologies, the variance research perspective dominates the literature on exoskeleton implementations. The current thesis aims to foster process research by formalizing the coping model of user adaptation (Beaudry & Pinsonneault, 2005) and exploring research questions regarding workers' adaptation to general technology and exoskeletons. …

In Search Of Protective Factors Against Gun-Carrying For Black Male Youth: A Dissertation- Sectional And Longitudinal Analysis Of Secondary Data, Kevin Edward Antwi

USF Tampa Graduate Theses and Dissertations

This study examines the relationship between risk and protective factors and gun carrying among Black male youth using both individual-level and population-averaged effects. Grounded in the risk and protective factors framework and the ecological systems model, the study explores how protective factors at the individual, peer, school, and community levels influence gun carrying at a single point in time and over time. This research aligns with the Grand Challenges of Social Work by preventing gun violence and informing prevention efforts. Using the baseline and 11 waves of data from the Pathways to Desistance Study, the analysis identifies factors that reduce …

From Cardiovascular Safety Assessment To Peptide Hemolytic Activity Prediction: Integrative Computational Analyses For Drug Evaluation And Discovery, Xinran Zhu

USF Tampa Graduate Theses and Dissertations

This thesis applied integrative computational approaches to two major areas of drug evaluation and discovery: cardiovascular safety assessment and peptide hemolytic activity prediction. First, pharmacovigilance data from the FDA Adverse Event Reporting System (FAERS), electronic health records (EHRs) from TriNetX, and transcriptomic analyses were combined to evaluate anesthetic-associated cardiac rhythm adverse drug events. Among propofol, ketamine, dexmedetomidine, and midazolam, dexmedetomidine showed the strongest association with bradycardia across both FAERS and propensity score-matched EHR analyses. Stratified analyses further suggested substantially higher bradycardia prevalence among older patients and a modestly increased risk among male patients. Drug-drug interaction analyses identified risperidone and albuterol …

“He’S Got The Whole World In His Hands”: Seed Sovereignty And Agricultural Decision Making In Southeastern Kenya, Caroline Stahley

USF Tampa Graduate Theses and Dissertations

Increasing corporate control of the global seed supply and restrictions to local exchange threaten the autonomy of smallholder farmers and Indigenous communities. This project contributes to agricultural sovereignty movements by examining the decisions farmers make to address climate uncertainty, market volatility, and development agendas. Specifically, how is seed saving practiced and understood in relation to sovereignty? It reimagines what global food systems might look like if investment were directed to producers rather than intermediaries, arguing that cultivators lack support, not knowledge or capacity. Across these domains, seeds act as a motif to describe the concerns, innovations, and visions of farmers.

Mental Health Service Utilization Among Children With Autism Spectrum Disorder: A Secondary Analysis Of The 2021–2022 National Survey Of Children's Health, Emma N. Barnes

USF Tampa Graduate Theses and Dissertations

Children with autism spectrum disorder (ASD) frequently experience co-occurring emotional, behavioral, and mental health concerns that increase the need for accessible behavioral health services. Although schools often serve as an important point of access for behavioral health support, disparities in service utilization continue to exist. Limited national research has examined recent patterns of mental health service utilization among children with ASD using updated nationally representative data.

The purpose of this study was to examine mental health service utilization among children with ASD and determine whether utilization differed across demographic and socioeconomic groups. Secondary data from the 2021–2022 National Survey of …

House Sparrows Reveal Hidden Reservoirs Of Antimicrobial Resistance, Nathan Dowling

USF Tampa Graduate Theses and Dissertations

Antimicrobial resistance (AMR) is a growing global health threat, yet surveillance for antimicrobial resistance genes (ARGs) remains concentrated in clinical and livestock systems, leaving environmental and wildlife reservoirs comparatively understudied. The objective of this study was to evaluate whether one synanthropic bird species integrates landscape-level antimicrobial resistance pressures across socioeconomic gradients and to identify the predictors most strongly associated with cross-national variation in ARG prevalence. We examined ARG occurrence in the globally distributed house sparrow (Passer domesticus), sampling 205 individuals across eight countries spanning large gradients in economic development, antimicrobial use, and governance structure. Using targeted molecular screening of gastrointestinal …

Using The Good Behavior Game To Decrease Challenging Behavior In Children With Autism Spectrum Disorder, Andrea M. Babb

USF Tampa Graduate Theses and Dissertations

Challenging behavior in school settings can negatively impact academic engagement, social relationships, and access to instruction. Previous research has shown that the Good Behavior Game (GBG) can improve academic performance and decrease challenging behavior. Generally, to play the GBG, the teacher establishes a set of rules (e.g., “remain seated during the lecture”) that the students should follow and divides the class into two teams. When a student on either team breaks a rule, the teacher gives that team a tally or hatch mark. The team with the fewest tallies at the end of the game wins a prize. The current …

Evaluating The Effects Of Response Cards On Active Student Responding And On-Task Behavior With Elementary Students Diagnosed With Autism And Other Disabilties, Joshua N. Alvarado

USF Tampa Graduate Theses and Dissertations

One of the most prominent difficulties that students diagnosed with autism spectrum disorder (ASD) face in their education is consistently engaging in on-task behavior and active participation during whole-class group instruction. The use of response cards is one method that has been demonstrated to have beneficial effects for increasing on-task behavior and active participation for students with disabilities. However, there is limited research on effects with students diagnosed with ASD, particularly elementary students. The purpose of this study was to evaluate the effects of two response card types to increase active student responding, on-task behavior and correct responding for elementary …

When “Mild” Isn’T Minor: Return-To-Work Challenges In Post-Stroke Mild Aphasia, Maya Berro

USF Tampa Graduate Theses and Dissertations

Return-to-work (RTW) is an important aspect of social participation and quality of life following stroke. However, limited research has explored the experiences of individuals with mild aphasia in the RTW process. This purpose of this qualitative study was to explore how individuals with post-stroke mild aphasia perceive their ability to RTW and identify factors that influence this process. Ten adults with mild or very mild aphasia participated in individual semi- structured interviews conducted via Microsoft Teams. Interview transcripts were analyzed using inductive thematic analysis. Three major themes emerged: (1) Barriers to RTW, (2) Facilitators to RTW, and (3) Perceptions of …

Amending Planting Media With Typha-Derived Biochar For Sustainable Horticulture, Elissa Touma

USF Tampa Graduate Theses and Dissertations

Constructed wetlands are widely used to improve water quality by removing excess nutrients from wastewater and stormwater. Nutrients are stored within wetland vegetation, particularly in fast-growing plants such as Typha. Harvesting vegetation provides an opportunity to permanently remove these nutrients while generating biomass suitable for beneficial reuse. Converting harvested biomass into value-added products such as compost and biochar can support nutrient recovery and sustainable biomass management. In addition, increasing concerns regarding the environmental impacts of peat extraction have created interest in renewable alternatives for horticultural growing media. Therefore, the objective of this study was to evaluate the potential of harvested …

Exploring Culturally Responsive Leadership Practices Among Female Leaders In Title I Schools: Strategies For Enhancing Student Success, Tara K. Indar

USF Tampa Graduate Theses and Dissertations

The academic achievement gap between White students and diverse student populations remains a persistent and prominent disparity in schools across the United States. While this issue affects schools nationwide, it is particularly significant in Title I schools, where many students from diverse, lower-socioeconomic-status backgrounds are served. Although a substantial body of literature examines this gap and highlights the positive impact of culturally responsive leadership, there remains a limited understanding of which specific practices are most effective in improving students’ academic outcomes. This study explores the perceptions of female school leaders in Title I schools regarding the strategies they believe contribute …

Modeling And Mitigating Stale Hardcoded Secrets In Version Control History, Katarina Valentine Capalbo

USF Tampa Graduate Theses and Dissertations

Hardcoded secret vulnerabilities remain a growing and persistent problem that can be difficult to mitigate once exposed. While there has been significant research and advancements in identifying and preventing hardcoded secrets, less attention has been given to understanding the risks of leaving these secrets behind in version control history, as well as analyzing the sanitization of hardcoded secrets. These challenges present a growing gap between the risk and ability to mitigate and sanitize existing secret exposures. This thesis begins to address this gap by formalizing a threat model for hardcoded secrets that persist in Git version control history after the …

Affect And Identification In Hereditary And Huesera: A Critique Of Neoliberal Motherhood In Post-Horror, Jared M. Lamanati

USF Tampa Graduate Theses and Dissertations

This thesis examines the implications of affect and identification in post-horror and the consequences they present for motherhood. Specifically, I argue Hereditary (Ari Aster, 2018) and Huesera (Michelle Garza Cervera, 2023) make use of their maternal protagonists to complicate spectatorial identification and critique the cruel attachments of neoliberalism which idealize a heteronormative, homogenous vision of mothering. Following David Church’s postulation of affect, neoliberalism, and the maternal melodrama as central to “post-horror,” I look towards Linda Williams’s and Lauren Berlant’s paradigms of pathos and sentimental politics. While Williams addresses the complicated pains and pleasures of pathetic identification in the maternal melodrama, …

Testing The Impact Of Sexual Minority Stress On Endorsement Of Prospective Behaviors Related To Borderline Personality Disorder Among Lesbian, Gay, Bisexual, And Queer Adults, E. Elisa Carsten

USF Tampa Graduate Theses and Dissertations

Sexual minority individuals face increased risk for numerous forms of psychopathology compared to heterosexual individuals, including borderline personality disorder (BPD). Previous investigation into the causes of these mental health disparities highlights several sexual minority-specific factors that may render sexual minority individuals uniquely vulnerable to meeting criteria for a BPD diagnosis, including chronic exposure to minority stressors, such as sexual orientation-based discrimination and stigmatizing beliefs. Some scholars have argued that the relevance of these minority-specific stressful experiences hampers the utility of a BPD diagnosis among members of this historically marginalized population. The present study experimentally tested the influence of minority stressors …

Sam-1: An Assistive Robot For Remote Patient Monitoring, Aana Farhana Ahsan

USF Tampa Graduate Theses and Dissertations

The global aging population has increased the demand for caregiving, while the availability of caregivers has not grown at the same pace. These trends have contributed to disparities in consistent and accessible care for older adults and increased caregiver burden. Geriatric care robots have emerged as a promising solution to support older adults and reduce caregiver burden. Existing systems have been developed for a wide range of applications, including rehabilitation, social support, assistance with activities of daily living, therapy, and caregiver telepresence. This thesis presents the development of SAM-1, an assistive robot designed to support remote monitoring of older adults …

Assessment Of Artificial Oyster Reef Health Based On Water Quality, Oyster Recruitment, And Perkinsosis Infection In Tampa Bay, Christian J. Goldman

USF Tampa Graduate Theses and Dissertations

Providing nursey habitat, regulating nutrients, stabilizing shorelines, increasing biological diversity, improving water quality, and creating three-dimensional environments are some of the ecosystem services of oyster reefs. Oyster reefs are threatened by overharvesting, changes in water quality, pollution, and disease. The Eastern oyster, Crassostrea virginica, is the primary oyster species along Florida’s Gulf coast. This study aimed to evaluate the relationship between multiple parameters on artificial reefs and how they influence the health of these reefs. Here, young (less than five years old) artificial oyster reefs were monitored for one year across three sites in Tampa Bay, FL: Lassing Park (LAS), …

Evaluating Some Effects Of Exposure To Prompt Topographies On Intraverbal Acquisition Rates And Choice For Prompt Topographies, Isabella Zaccor

USF Tampa Graduate Theses and Dissertations

People with developmental disabilities often have communication deficits, which create challenges with functioning in everyday life, making it more difficult for these people to foster meaningful relationships and live an independent life. People with developmental disabilities may need a more structured approach to learning important skills such as communication and social skills, such as learning with prompt topographies. By replicating Roncati et al. 2019, which evaluated exposure to prompt topographies and the effect on acquisition rates, we evaluated an adapted alternating treatments design within a multiple baseline across participants design to examine whether exposure to a specific prompt topography changed …

Discourse Production And Its Relationship To Cognition In Mild Aphasia, Marcy D. Edwards

USF Tampa Graduate Theses and Dissertations

Objective:Standardized assessments such as the Western Aphasia Battery-Revised do not reliably detect subtle language impairments in mild aphasia (Dalton & Richardson, 2015). Discourse tasks may provide a more sensitive measure of impairment. Although discourse tasks differ in cognitive demands (Kim & Kintz, 2024), variation in discourse performance across tasks and the influence of cognition remains unclear. Therefore, this study examined (1) whether discourse performance differs across different discourse elicitation tasks, and (2) the extent to which cognition influences discourse performance in individuals with mild aphasia.

Participants & Methods: Fifteen participants with mild aphasia participated (mean age = 62.7 years). Discourse …

Morphodynamic Evolution Of Midnight Pass, West-Central Florida, Sydney C. Scott

USF Tampa Graduate Theses and Dissertations

This study takes advantage of a rare opportunity provided by the reopening of Midnight Pass due to two consecutive hurricanes in 2024, to examine the morphologic evolution of a newly reopened inlet and subsequent beach-inlet interactions. Historical aerial photos since the 1940s were collected and analyzed to understand the last closure of Midnight Pass, and to gain knowledge on the future of the newly reopened inlet. Time-series topography and bathymetry survey of the beach-inlet system were conducted bimonthly to quarterly for the first year and a half after the reopening, with the goals of quantifying the morphologic changes and understanding …

Exploring Menstrual Cycle Experiences And Well-Being In Young Women With Type 1 Diabetes, Yolanda Rotzinger Ballesteros

USF Tampa Graduate Theses and Dissertations

Young women with type 1 diabetes (T1D) navigate complex physical, emotional, and social challenges, being at a higher risk for mental health concerns (e.g., depression), as well as physical (e.g., fatigue) and cognitive (e.g., focus) symptoms related to the management of their chronic health condition (Dantzer et al., 2003; Northam et al., 2005). About one-third of young women with T1D experience some form of menstrual dysfunction (Griffin et al., 1994; Schweiger et al., 2011), which is associated with lower quality of life across several domains, including the educational setting (Knox et al., 2015). Nevertheless, there is a gap in the …

Quantitative Determination Of Nano Delivered Kras Sirna, Axel S. Deraspe

USF Tampa Graduate Theses and Dissertations

This study focuses on the development and validation of analytical methods for the detection of therapeutic KRAS-targeting siRNA in biological systems. Physicochemical characterization showed that p5RHH-formulated siRNA nanoparticles exhibit a controlled nanoscale size distribution, moderate polydispersity, and a negative zeta potential, suggesting colloidal stability and potential suitability for cellular uptake. Scanning electron microscopy confirmed a predominantly spherical morphology with a relatively uniform size distribution, consistent with dynamic light scattering measurements.

To enable accurate siRNA quantification, stem–loop reverse transcription (SL-RT) coupled with SYBR Green–based quantitative Polymerase Chain Reaction (qPCR) was optimized. Key parameters, including a primer concentration of 100 nM and …

Moving Through Disasters: Spatial Analysis And Modeling Of Evacuation, Migration, And Socioeconomic Selectivity In The United States, Xiang Li

USF Tampa Graduate Theses and Dissertations

Disasters increasingly affect population movement in the United States, but their relationships with mobility and migration at various spatio-temporal scales are not fully understood. Disaster-related movement may appear as short-term evacuation during hazardous events, long-term migration after major or repeated disaster exposure, or selective redistribution across socio-economic groups. Therefore, this dissertation aims to address three main questions: 1) What are the spatial patterns of evacuation, and how do evacuation rates vary across space during a major disaster? 2) To what extent are natural disasters associated with long-term human migration patterns in the United States, and how can their contributions be …

Caregiver-Implemented Functional Analysis Of Moderate-To-Vigorous Physical Activity Of Children, Rachel B. Riccardo

USF Tampa Graduate Theses and Dissertations

Most children do not currently meet the 60 min per day recommendation for moderate-to-vigorous physical activity (MVPA), which could lead to problematic health outcomes. Researchers have used behavioral assessments (i.e., functional analysis [FA]) to identify the maintaining variables (e.g., attention, interactive play) that produce elevated levels of MVPA. The purpose of this study was to evaluate the extent to which a caregiver-implemented FA can identify the function of their child’s MVPA. All three participants engaged in elevated levels of MVPA when adult interaction and attention were delivered contingently. The results of this study showed that caregivers implemented FAs of MVPA …