Digital Commons Network^™

Variation In Investment Portfolios For Identical Client Scenarios: A Study Of Portfolios Recommended By Financial Professionals, Patricia G. Wells

USF Tampa Graduate Theses and Dissertations

Using a unique set of data obtained from interviews of financial professionals, this study aimed to explore the heterogeneity among portfolios of mutual funds and exchange-traded funds recommended by financial professionals for fictional client scenarios that control for investor risk and asset allocation. First, the extent to which the revealed asset allocation matched the elicited asset allocation was examined. Next, the portfolios were examined relative to diversification within the stock and bond holdings. Portfolios were examined on the basis of hypothetical historical risk and return. Lastly, comments provided by financial professionals about their security selections and investment approach were presented. …

A Contexted Learning Experience: Instructional Strategies For Effective Teaching For Primary And Intermediate Students From Diverse Ses Environments, R. Suzanne Legg

USF Tampa Graduate Theses and Dissertations

The aim of my three-article dissertation was to investigate the methods employed by effective teachers to promote academic progress among all students, regardless of their socioeconomic status. Each article addressed perspectives on effective teaching strategies aimed at closing the opportunity gap from three different contexts. These contexts were 1) a focus group consisting of primary teachers, 2) a focus group consisting of intermediate teachers, and 3) personal reflections from observations of both focus groups pertaining to COVID-19. Recent scores from the Programme for International Student Assessment (OECD, 2023) revealed a growing disparity in academic achievement between students from higher socioeconomic …

Developing Robotic Task Planning Methods For Diverse Real-World Challenges, Md Sadman Sakib

USF Tampa Graduate Theses and Dissertations

The deployment of robotic systems across various domains has expanded significantly, with applications ranging from domestic tasks, such as cleaning and cooking, to industrial operations requiring precision and automation. These advancements highlight the critical importance of effective task planning in ensuring that robots can perform tasks safely, efficiently, and autonomously. However, task planning in robotics faces challenges related to generalization, executability, flexibility, and limitations in existing knowledge bases.

This dissertation addresses these challenges through innovative strategies aimed at enhancing robotic task planning and execution. We first focus on adapting to unknown scenarios by utilizing the Functional Object-Oriented Network (FOON) to …

Evaluating The Use Of Text Message Prompts To Increase Staff Behavior-Specific Praise In Adult Residential Care, Melissa Hernandez-Bautista

USF Tampa Graduate Theses and Dissertations

Behavior-specific praise (BSP) has been widely evaluated in school settings as an intervention to improve social interactions between teachers and students. However, minimal studies have evaluated the use of BSP outside of school settings. One area BSP might help improve is staff and client interactions in group home settings for individuals with intellectual and developmental disabilities. The current study evaluated the effectiveness of text message prompts for increasing staff-delivered BSP to improve the frequency of social interactions between staff and consumers in a group home setting. In addition, this study evaluated staff use of BSP when they received text prompts …

Evaluating The Effectiveness Of Edge Line Sinusoidal Rumble Strips On Lane Departure Crash Prevention And Injury Severity, Shubhankar Chintamani Shindgikar

USF Tampa Graduate Theses and Dissertations

Lane departure crashes are one of the most prevalent accidents in Florida and the United States. Various forms of rumble strips have been employed to mitigate and decrease these incidents. The Florida Department of Transportation (FDOT) recently adopted a new sinusoidal rumble strip pattern for statewide implementation of audible and vibratory treatment (AVT). Recent research indicates sinusoidal rumble strips are highly effective in alerting drivers audibly and through tactile vibrations, thus aiding lane departure prevention. Moreover, they generate less external noise compared to other rumble strip textures.

However, a systematic assessment of the safety effectiveness of sinusoidal rumble strips in …

Spatiotemporal Dynamics Of Coastal Nekton Metacommunities In The Western Atlantic, Jonathan A. Peake

USF Tampa Graduate Theses and Dissertations

The processes of diversification, selection, dispersal, and stochastic drift can combine in many ways to assemble ecological communities. A key focus in ecology is to describe and quantify the relative influences of these processes for different systems and explain the mechanisms by which these processes produce patterns of community structure. To accomplish this goal, ecologists have developed several frameworks that seek to integrate processes that occur locally andregionally. The metacommunity concept treats local communities as pieces of a broader landscape that are connected through dispersal of their constituent organisms. Empirical studies have generally lagged behind the development of metacommunity theory. …

Multi-Sided Information Asymmetry In A Single Contract: Why Revocable Living Trusts Go To Court, James P. Wells

USF Tampa Graduate Theses and Dissertations

Revocable living trust documents (trusts) are among the most important documents created in contemporary estate planning. One of the trust’s objectives is to provide clear guidance to the trustees on how to carry out the grantor's intent. When a trust is contested in court, the objective of the trust has clearly failed. Consequently, understanding why trusts go to court and developing approaches that reduce or eliminate the number of trusts in our courts is an endeavor worthy of research and the primary objective of this research effort.

Ideally, with a clearly stated grantor’s intent and clearly executed interpretation of the …

Effects Of Goal Setting, Self-Monitoring And Feedback On Physical Activity In Older Adults, Sofia O'Leary

USF Tampa Graduate Theses and Dissertations

Healthy aging can be defined as maintaining functional ability that promotes overall wellbeing as one ages. Adequate levels of physical activity in older adulthood are associated with many positive health outcomes which support healthy aging; however, most older adults do not meet the current physical activity recommendations associated with healthy aging. Generally, inadequate physical activity is associated with a variety of health risk factors including overweight and obesity, cardiovascular disease, Type 2 diabetes, and certain types of cancer. Although older adults share these same risk factors for inadequate levels of physical activity as adults, there are additional risk factors that …

An Analysis Of The Learning Activity System Of An Elementary Education Program For The Development Of Social And Emotional Competence In Preservice Teachers, Lisa Sheldon Brown

USF Tampa Graduate Theses and Dissertations

This mixed-methods descriptive case study examined how a public research university's elementary education teacher preparation program develops social and emotional competence (SEC) in preservice teachers. Using Engeström's Expansive Learning Theory framework, the study analyzed the tools and mediating artifacts within the program's learning activity system, specifically focusing on activities known to develop SEC. Through semi-structured interviews with 18 instructors and comprehensive document analysis, the study found that SEC development is extensively integrated throughout the program's coursework and field experiences. Three primary types of SEC development activities were identified: self-reflection/self-awareness, active listening, and collaboration. The study revealed a significant correlation between …

Balancing Context And Clarity Through Visualizations For Better Decision-Making, Bhavana Doppalapudi

USF Tampa Graduate Theses and Dissertations

In this era of a data driven world, the effective communication of data through visualizations is pivotal for converting complex information into accurate insights. Effective visualizations not only enhance users' comprehension of complex data but also induce trust, leading to better decision-making. This dissertation explores methods to improve trust in visualizations by providing additional context and enhancing their clarity, ensuring appropriate data interpretations and better decisions from users.

The work in the dissertation begins by examining the impact of scatterplots combined with statistical metrics such as accuracy on users' trust and decision-making focused on recommender systems. In addition, we show …

Do Students Notice If Institutions Require Their Faculty To Prepare For Teaching?, Adam M. Caskie

USF Tampa Graduate Theses and Dissertations

Higher Education is the gateway to a successful life, and students need their institution's support to make it to graduation. Undergraduate students have their primary academic interactions with a university through its faculty and the courses they are required to complete to earn a degree. Engagement with faculty is a key factor in student satisfaction with their institution. The extent to which faculty make time for excellent teaching and additional experiences for students is driven by the reward systems at the institutions where they research, teach, and advise.This research study investigates whether student perceptions of faculty interactions and teaching effectiveness …

Coding Connections: Exploring Relationships Between Computer Science Learning And Mathematics Achievement In Secondary Education, Bradley Hayes

USF Tampa Graduate Theses and Dissertations

This dissertation in practice explores the intersection of computer science education, specifically computational thinking and programming, with mathematics achievement among 15-year-old students in selected English-speaking countries. The research addresses a gap in understanding whether skills developed through computer science can positively influence mathematics performance by assessing the extent to which learning in computer science transfers to mathematics.

To achieve this, a quantitative methodology was employed, incorporating pilot study data from a single school and large-scale survey data from the Programme for International Student Assessment (PISA) 2022. The analysis assessed the correlation between regular participation in programming activities and mathematics attainment, …

Implementing Acceptance And Commitment Therapy To Reduce Caregiver Stress And Enhance Procedural Fidelity For Families Affected By Autism Spectrum Disorder, Casey K. Marsh

USF Tampa Graduate Theses and Dissertations

The rate of children diagnosed with autism spectrum disorder (ASD) is increasing each year (CDC, 2022). Although the severity of symptoms is specific to individuals, the families of those diagnosed are often also affected in a variety of ways. Caregivers of children with ASD experience higher rates of depression, anxiety, and stress. The purpose of this paper is to examine the effects of Acceptance and Commitment Therapy (ACT) on caregiver stress and procedural fidelity. Three caregivers of children with ASD were trained using an ACT curriculum and caregiver stress was measured using two self-report scales, before and after six ACT …

Detecting Changes In Cancer-Related Cognitive Functioning Using Mixed-Effects Modeling And Study Design Simulations, Jonathan D. Clapp

USF Tampa Graduate Theses and Dissertations

The purpose of this dissertation is to utilize and compare two existing approaches for modeling nonlinear change in cognitive functioning in cancer patients over time and to assess alternative study designs to better capture chemotherapy-related cognitive impairment using simulation data. Using data from the Thinking and Living with Cancer study, trend analysis with orthogonal polynomials (OP) and piecewise (PW) regressions approaches used to analyze cognitive functioning trajectories. Simulated datasets tested the impact of study design parameters including measurement test-retest reliability (.6 or .8), sample size (100, 200, or 300), and the number of data collection time points (4 or 5) …

Precursors To Student Burnout Through A Person-Environment Fit Lens, Kenny Le

USF Tampa Graduate Theses and Dissertations

Burnout has been shown to be a pressing mental health outcome across populations, and this phenomenon has received more recent attention in young adult and student populations with increasing evidence mirroring what has previously been found in workplace research. However, the current research has not yet developed a theoretical model towards student burnout specifically, and the existing multidimensional theory of burnout does not capture precursors towards the first stages of the syndrome. The current study uses the person-environment (P-E) fit as a framework to identify relevant environmental and individual factors, as research has suggested perceived environmental fit is associated with …

Baseline Factors And Their Association With Refractive Error And Control In A Pediatric Randomized Clinical Trial Of Overminus Therapy For Intermittent Exotropia, Julianne L. Robinson

USF Tampa Graduate Theses and Dissertations

Intermittent exotropia (IXT) is a condition resulting in an eye deviation away from normal alignment, potentially treatable with overminus lenses. These induce accommodation of the eye, combatting the eye drifting outward. Overminus lenses may help treat IXT but also potentially worsen refractive error. Analyses aimed to find associations of baseline factors as they relate to IXT control outcomes, as well as the risk of worsening spherical equivalent refractive error (SER). One hundred ninety-six participants aged 3 to <11 treated with overminus lenses for 12 months were analyzed to explore associations between age, sex, race, ethnicity, strabismus severity, accommodative convergence/accommodation ratio (AC/A), and baseline SER with outcomes of change in SER and change in control. Analyses included outcomes for both SER and control as continuous and binary outcomes, and a secondary combined outcome. More myopic baseline refractive error and older age were associated with a worsening in SER after 12 months, -0.08 diopters (D) worsening SER per 1 year age increase (95% CI -0.13 to -0.03), and -0.30 D worsening SER per additional 1 D of myopic refractive error (95% CI -0.39 to -0.21). A larger AC/A ratio was associated with better distance control (0.11 points improvement per D of AC/A, 95% CI 0.03 to 0.19). The combined SER and control outcome showed the same factors (age, baseline refractive error, and AC/A ratio) were significantly associated with improving outcomes. Overminus lens therapy may be beneficial for some patients, but further study is needed to explore the results of these exploratory analyses.

Examining Emergency Remote Teaching And Undergraduate Academic Outcomes During The Pandemic, Melissa S. Ramge

USF Tampa Graduate Theses and Dissertations

The COVID-19 pandemic represented an extraordinary public health emergency, leading to the most profound disruption to education systems in modern history. As higher education institutions expand their post-pandemic online course catalogs, it is necessary first to explore the student outcomes and student perceptions of learning related to the pandemic. This study used an explanatory sequential mixed methods research design to assess the relationship between the COVID-19 pandemic and students’ perceptions of online learning. The purpose of the study was to examine what, if any, trends in undergraduate student course grades and student perceptions of the instruction occurred coincident with the …

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 …

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 …

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 …

Is It Really An Affect Gap? Outcome Type Vs. Intensity In Risky Decision-Making, Jordan E. Martin

USF Tampa Graduate Theses and Dissertations

People respond to decisions differently when emotion is involved. The affect gap hypothesissuggests that people are more likely to focus on the outcome and ignore probabilities of outcomes when emotions are strong, and people are likely to include consideration of probabilities with outcomes when emotions are weak. However, typical methodologies have a confound in the manipulation of affect, with affect-poor outcomes that are quantitative in nature (e.g., money) and affect-rich outcomes that are typically qualitative (e.g., experiences). To address this confound, I created a mixed factorial design to examine choices made in lottery pairs manipulated by intensity (low, high), outcome …

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 …

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 …

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 …

Forgotten Partners: Mothers’ Perceptions Of Early Literacy Instruction For Students With Intellectual And Developmental Disabilities, Andrew Payne

USF Tampa Graduate Theses and Dissertations

Families are often the forgotten partners in education and in educational research. It is important to consider input from families regarding their children’s education. Their voices are crucial ones that should be heard more often. The research is currently lacking information about families’ perceptions about the education of their children with significant disabilities. This qualitative study explored mothers’ perspectives on the literacy education of their children and the role they play in the process. Stories of five participants and their lived experiences of supporting their children with intellectual and development disabilities in acquiring early literacy skills are shared. Themes relating …