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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 …

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 …

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 …

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 …

How Location-Allocation Modelling Can Be Used To Site Pet-Friendly Evacuation Shelter Locations For Pet Owners In Hillsborough County, Florida: An Exploratory Study, Sarah A. Shaughnessy

USF Tampa Graduate Theses and Dissertations

Florida has been hit by some of the most destructive tropical cyclones in North America due to its relative location to the Gulf and Atlantic Ocean. Florida’s population growth since the 2000’s and the increased frequency of stronger storms because of climate change have made numerous emergency management leaders throughout the state get evacuation shelter networks established for public safety. However, the existing shelter network in Hillsborough County has become inadequate to satisfy the unprecedented population growth in that specific area since the COVID-19 pandemic and there’s a need for new shelter locations to better accommodate the growth when a …

The Long-Term Biological Toll Of Adverse Childhood Experiences And The Role Of Psychological Resilience, Jill Krier Desch

USF Tampa Graduate Theses and Dissertations

Adverse childhood experiences (ACEs) are preventable, potentially traumatic events that occur before age 18 such as physical, sexual, and emotional abuse, neglect, and household instability and are associated with the leading causes of adult morbidity and mortality in the United States. The mechanisms underlying these associations are not yet fully understood, but the link between ACEs, chronic stress, and allostatic load is one potential pathway. Although ACEs are associated with the leading causes of adult morbidity and mortality, many individuals continue to lead healthy lives through adulthood despite exposure to ACEs. This dissertation used data from Waves I – V …

Evaluating Generalization-Enhanced Behavioral Skills Training To Teach Firearm Safety Skills To Children With Autism, Victoria Alvarez

USF Tampa Graduate Theses and Dissertations

Due to the large number of firearm-related incidents and the high percentage of households that own firearms in the United States, it is crucial that children learn firearm safety skills. Although previous research has evaluated various procedures for teaching firearm safety skills to typically developing children, there is a limited amount of research evaluating these interventions for children with autism spectrum disorder (ASD). The current study evaluated the effectiveness of a generalization-enhanced behavioral skills training (BST) procedure, which included varied training settings and tangible reinforcers, to teach firearm safety skills to children with ASD. We evaluated generalization-enhanced BST and in …

Listener Factors In Integrating Syntax And Plausibility In Sentences Produced With Versus Without Stuttering, Gabriella L. Burgess Hayes

USF Tampa Graduate Theses and Dissertations

Purpose: Development of communication-focused therapy for people who stutter requires better understanding of how stuttering impacts oral comprehension. One aim was to investigate how stuttering impacts listeners’ ability to integrate syntax and world knowledge (plausibility) in sentence processing. A second aim was to investigate how listener factors predict ability to integrate information in sentences with stuttering.

Methods: 224 adults heard 24 experimental sentences interspersed with 24 fillers. Experimental sentences included six plausible double-object dative (DO) constructions, six plausible prepositional dative (PD) constructions, six implausible DO constructions, and six implausible PD constructions. Implausible constructions served as analogues of communication breakdowns. Half …

Understanding The Impact Of Minority Stress On Mental Health Among Racially And Ethnically Diverse Adults: Insights From A Daily Diary Study, Ruba S. Rum

USF Tampa Graduate Theses and Dissertations

Minority stressors are theorized to contribute to mental health disparities for racial and ethnic minority individuals. While prior research links distal (i.e., external) and proximal (i.e., internal) minority stressors to adverse psychological outcomes for racial and ethnic minority groups, most studies have relied on cross-sectional designs that limit understanding of the immediate and short-term effects of minority stressors and potential protective factors in daily life. To address this gap, the present study examined the within-person daily associations between distal (interpersonal and vicarious discrimination, microaggressions) and proximal (internalized stigma, anticipation of rejection, identity management) minority stressors and psychological outcomes. Racial and …

Prosocial Behaviors As A Protective Factor Against Suicide Risk: An Ecological Momentary Assessment Approach, Bradley A. Brown

USF Tampa Graduate Theses and Dissertations

Suicidal ideation (SI) fluctuates substantially over short timescales, and the Interpersonal Theory of Suicide proposes that suicidal thinking emerges through dynamic interpersonal states involving perceived burdensomeness (PB), thwarted belongingness (TB), and hopelessness regarding these interpersonal states (IH). Although ecological momentary assessment (EMA) research has demonstrated that these risk factors fluctuate meaningfully within individuals and are associated with short-term changes in SI, comparatively little research has examined interpersonal processes that may attenuate suicide risk in real time. Prosocial behavior — voluntary actions intended to benefit others — may represent one such process, yet no known EMA study has examined whether prosocial …

Students In Motion: How Educators Enact Movement In Elementary Mathematics, Katherine E. Nash

USF Tampa Graduate Theses and Dissertations

This study used an exploratory sequential mixed-methods design to examine how elementary mathematics teachers report using physical activity in their instructional practice. The purpose of the study was to develop, provide evidence of validity, and implement a questionnaire to document the types of movement teachers use and when these practices occur in relation to mathematics instruction. In Phase 1, qualitative interviews were conducted with eight elementary mathematics teachers to identify common movement types and inform instrument development. The eight movement types that were identified are non-academic fine-motor, non-academic gross-motor, non-academic music-elicited, non-academic environmental, academic fine-motor, academic gross-motor, academic music-elicited, and …

Measures Of Linguistic Complexity And Vocabulary Diversity As Indicators Of Oral Language Production Growth Of 4th Grade Spanish-Speaking Els, Carla T. Zayas-Santiago

USF Tampa Graduate Theses and Dissertations

As fourth-grade students transition from learning to read to reading to learn, their ability to use language for academic purposes becomes increasingly important, particularly for Spanish-speaking English Learners (ELs). However, students often have limited opportunities to produce extended oral language during instruction. Students’ oral language production reflects both structural aspects of language use, captured through measures of linguistic complexity, and lexical aspects of language use, captured through measures of vocabulary diversity. Although prior studies have examined transcript-derived measures of oral language production, limited research has examined how these measures predict English proficiency, capture growth over time, and respond to different …

Situating Stormwater Infrastructure Through Collaborative Design: Insights From A University-Community Partnership, Serena A. Echols

USF Tampa Graduate Theses and Dissertations

Stormwater ponds help address flooding and partially mitigate nutrient pollution while sometimes serving as a central landscape element in community parks. In underserved urban communities, however, stormwater ponds are sometimes neglected and underutilized, leading to public health and environmental justice challenges. Our research in Tampa, Florida, seeks to develop pathways for residents and other stakeholders to collaboratively co-design infrastructure interventions and pondscape redevelopment for neglected stormwater ponds. Drawing on ethnographic and participatory methods as well as environmental assessment and modeling, we are working with residents of one pond community on cleanup and redevelopment strategies. Results reveal that balancing local and …

The Architecture Of Chemical Understanding: How Representation Selection, Ordering, And Feature Salience Shape Students' Conceptions In Chemistry, Isaiah Nelsen

USF Tampa Graduate Theses and Dissertations

Chemical representations play a central role in how students learn and reason aboutchemistry. While representations are routinely used in chemistry classrooms, students often struggle to extract relevant information, connect representations to underlying chemical principles, and apply this information to problem-solving. This dissertation investigates the role of representations in supporting students’ conceptual understanding and reasoning across general and organic chemistry through three qualitative studies.

The first study in this work explores how variation in chemical representation influences how students understand foundational chemistry principles. This study sought to characterize how second semester general chemistry students approach dipole–dipole interaction tasks with four distinct …

Defining The Dynamic Role Of Belongingness In Alcohol Use Disorder Treatment, Brendan E. Walsh

USF Tampa Graduate Theses and Dissertations

Drinking is intertwined with social processes, including social support and group belongingness. Although drinking can transiently enhance social functioning, escalating to heavy use can be detrimental to it. It is well-known that excessive drinking and social dysfunction exacerbate each other over time, and it follows that social support and belonging are key mechanisms of addiction recovery. Yet, less is known about how changes in belongingness throughout treatment dynamically affect drinking outcomes, and even less is known about how drinking outcomes and other social processes (e.g., therapeutic alliance, interpersonal drinking consequences) dynamically influence belongingness. The current project (N = 210) studied …

Examination Of Gastrointestinal Visceral Sensitivity In The Maintenance Of Restrictive Eating Disorders, Kendall N. Poovey

USF Tampa Graduate Theses and Dissertations

Aversive conditioning theories of restrictive eating disorders propose that gastrointestinal (GI) visceral sensitivity (i.e., hypervigilant monitoring and worry about GI sensations) is implicated in the maintenance of restrictive eating disorders (i.e., anorexia nervosa [AN], atypical anorexia nervosa [AAN], and avoidant/restrictive food intake disorder [ARFID]). Specifically, a negative reinforcement process is posited in which disordered eating behaviors (e.g., restriction, purging) help to mitigate or avoid GI-related distress, and are thereby reinforced. However, this theorized process has yet to be tested. For the current study, participants from the University of South Florida and surrounding Tampa community who screened positive for a restrictive …

New Developments In Space-Filling Designs, Xiankui Yang

USF Tampa Graduate Theses and Dissertations

This dissertation presents three methodological advancements to improve the construction of space-filling designs for meeting different needs of computer experiments. Traditional space-filling designs focus on achieving uniform coverage in the input space, ensuring that design points are spread evenly throughout. However, in some scientific and engineering applications, varied density of design points may be desired for more efficient data collection when prior knowledge implies different emphases. In other cases, ensuring good coverage and/or spread of the response values allows better performance of fitted models in the next stage of applications. Many processes involve variation in response values. Therefore, incorporating variation …

Combating Β-Lactamase Resistance: From Inhibitor Design To Substrate Evolution, Lian M.C. Jacobs

USF Tampa Graduate Theses and Dissertations

β-lactamase production by bacteria is a major mechanism of antibiotic resistance. These enzymes hydrolyze β-lactam antibiotics, preventing them from binding to and inhibiting PBPs. Although new β-lactam scaffolds and inhibitors are continually introduced into the clinic, resistance often emerges within a few years. Therefore, the development of cross-class inhibitors with novel scaffolds is critical to mitigate this resistance. In parallel, a deeper understanding of the structural and mechanistic basis of β-lactamase resistance is essential. Together, these approaches provide an effective strategy for combating antibiotic resistance.

The first project addressed the need of effective cross-class β-lactamase inhibitors capable of targeting SBL …

Unquaint Pigs’ Stakeholder Perspectives On Wild Swine In Central Western Florida, Tyler Koerner

USF Tampa Graduate Theses and Dissertations

The Anthropocene presents important questions for how to address the continuous transferal of new species into new spaces and the cascading impacts of environmental transformations. Novel ecosystems present one such outline for conservation that acknowledges the modification of historic ecosystems and the social entanglements that arrive with new species. I argue that novel ecosystems can benefit from further anthropological integrations that aid in describing the entanglements of introduced species and the pursuit of best managerial outcomes. For wild swine in Florida, the adoption of a novel approach is especially relevant because of entanglements with historic and modern Floridian stakeholders and …

The Heterogeneous Response Of Astrocytes In Different Brain Regions Under Metabolic Stress, Pawan Kumar Thapaliya

USF Tampa Graduate Theses and Dissertations

Astrocytes play a central role in maintaining ionic homeostasis, neurotransmitter clearance, and brain en-ergy metabolism. Their excitability, reflected in activity-evoked intracellular sodium (Na+, [Na+]i) and calcium (Ca2+,[Ca+]i) dynamics, is increasingly recognized as a critical determinant of neuronal function and vulnerability, particularly under metabolic stress. Despite their importance, the mechanisms underlying astrocytic ionic signaling and its regional heterogeneity remain incompletely understood. In this thesis, I developed detailed computational and biophysical models to investigate astrocytic Na+ and Ca2+ dynamics, their bioenergetic consequences, and the roles of key ion transporters under physiological and metabolically stressed conditions, validating the models against experi- mental data. …

How Well Are We Preparing U.S. Youth With Down Syndrome For Health Care Transition? A Mixed-Methods Study Assessing Provider Support And Exploring Caregiver Experiences, Suman Kanti Chowdhury

USF Tampa Graduate Theses and Dissertations

Background: Health care transition (HCT) preparation is a structured process that empowers youth to take ownership of their health care as they transition into adulthood. Youth with Down syndrome (DS), a common genetic disorder associated with a high burden of co-occurring conditions, require HCT preparation support at a higher rate than their typically developing peers. Although transition preparation has been examined across various chronic conditions, few studies have focused on youth with DS. Moreover, prior research was limited by methodological constraints, including the lack of a validated HCT index, a small sample size, outdated estimates, and a lack of a …

Motivating Lung Cancer Screening Uptake: An Experimental Test Of Didactic Versus Narrative Messages For Lung Cancer Screening Among Individuals Who Currently Smoke Or Formerly Smoked, Honor M. Woodward

USF Tampa Graduate Theses and Dissertations

Lung cancer is the number one cause of cancer-related death in the United States and worldwide. Lung cancer screening with low-dose computed tomography (LDCT) has been associated with a 20% reduction in lung cancer-related mortality. Despite the obvious benefits of lung cancer screening with LDCT, screening is heavily underutilized compared to other cancer screening tests. Thus, it is critically important to develop strategies that help motivate screening uptake among eligible individuals. This study explored the effectiveness of narrative messages for motivating lung cancer screening uptake among individuals eligible for lung cancer screening who currently smoke or formerly smoked. Drawing from …

Considerations For Cherenkov Radiation Imaging In External Beam Radiotherapy For Diverse Populations In A High Throughput Cancer Clinic, Diego A. Hernandez

USF Tampa Graduate Theses and Dissertations

Cherenkov radiation imaging is a burgeoning field of optical imaging that has become a promising, non-invasive, technique that allows the visualization of radiation delivery during external beam radiotherapy. This form of imaging has opened the door to real-time and retrospective treatment verification and sparked a plethora of research aimed at improving the utility. This dissertation investigates possible clinical implementations and limitations of Cherenkov radiation imaging within a high-throughput cancer clinic serving a diverse patient population. The central motivation is the need to advance Cherenkov radiation imaging as a reliable tool for clinical use by improving its quantitative accuracy and applicability …

Development And Feasibility Testing Of A Video-Based Virtual Reality Bullying Safety Skills Intervention For School-Aged Children With Disabilities, Trevor C. Maxfield

USF Tampa Graduate Theses and Dissertations

Virtual reality (VR) technology has emerged as a promising instructional tool for children with disabilities; however, research on using VR to improve safety skills in this population remains limited. The present study employed a 2-phase approach to develop and evaluate a video-based VR bullying safety skills intervention for children with disabilities. In Phase 1, bullying and applied behavior analysis experts reviewed and validated the intervention content, including the response to bullying steps, school-based scenario storyboards, and embedded behavioral procedures, rating the content as valid and technically adequate. Expert feedback informed refinements to the intervention content and the decision to transition …

Theory And Applications Of Natural And Nature-Based Solutions In Estuarine Environments, Elizabeth L. Royer

USF Tampa Graduate Theses and Dissertations

This dissertation focuses on the theory and application of Nature-based Solutions (NbS), through three unique case studies. This study explores how the broad and interdisciplinary NbS framework can be applied to mitigate common coastal hazards. This framework considers the environment, economics, and social wellbeing, equally in the design and implementation of a solution. The current paradigm, working against nature, which is commonly seen in more passive approaches to hazard mitigation, like grey infrastructure (e.g. a seawall to protect a shoreline against wave action) does not accommodate the extremely dynamic environment. As perspectives shift to “working with nature” NbS can be …

Iron Deficiency And Depressive Symptoms: Effects Of Racial And Ethnic Disparity In Two Reproductive-Aged Us Women, Alexis Monkhouse

USF Tampa Graduate Theses and Dissertations

Problem: Reproductive- aged women are one of the populations most at risk for iron deficiency and depression in the United States. While many studies have looked at the relationship between these two illnesses, none have explored it from a biocultural framework, examining how race/ethnicity affects this relationship. Using data from NHANES, this thesis examined the relationship between iron status (total body iron) and depressive symptoms (PHQ-9) among reproductive-aged women in the U.S. and how race/ethnicity affects it. Methods. NHANES survey data from 2005-2010 were pulled. Demographic and laboratory data were used to determine eligibility, total body iron, and depressive scores. …

Novel Electrical Interfaces For Bionic Limbs, Matthew Aaron Melton

USF Tampa Graduate Theses and Dissertations

Advancements in neural interfaces are pivotal for enhancing the functionality and longevity of implantable biomedical applications, particularly in the field of neuroprosthetics. This dissertation is focused on the continuing development of a novel neural interface fabricated from silicon carbide (SiC). SiC has demonstrated superior performance over traditional silicon-based material systems due to its exceptional biocompatibility, hemocompatibility, and electrochemical stability. The research herein explores silicon carbide’s semiconductor properties, with a highlighted focus on a unique and innovative design structure - centered around a p-n junction. This work examines detailed fabrication steps of an all-SiC device, acute-style packaging (for future in vivo …

Chemical Design Strategies For Hybrid Metal Halide Semiconductors With Enhanced Stability And Optoelectronic Properties, Ali Azmy

USF Tampa Graduate Theses and Dissertations

Metal halide semiconductors have rejuvenated the attention of the scientific community for the last two decades owing to their photophysical and electronic properties. However, these materials have some limitations that hinder their commercialization and widespread application. One major limitation of these materials is their instability under ambient and operating conditions of moisture, head, light and radiation exposure. Here, we report multiple chemical design strategies to address the stability issues of these materials while simultaneously maintaining their exceptional optoelectronic properties. Such design strategies allowed the acquisition of the first members of the family of porous metal halide semiconductors which exhibit record …