Digital Commons Network^™

Integrated Process Modeling, Techno-Economic Analysis And Life Cycle Assessment For Enhanced Biogas-To-Energy Sustainability And Efficiency, Rarosue Jennifer Amaraibi

USF Tampa Graduate Theses and Dissertations

This dissertation aims to enhance the cost competitiveness and minimize the environmental footprint of technologies that convert biogas to energy, contributing to global climate change mitigation efforts. Biogas, a by-product of the anaerobic decomposition of organic waste from various sources, is a renewable energy source with the potential to reduce carbon emissions and meet local energy needs. However, widespread adoption requires the development of economically viable and environmentally friendly technologies.The central hypothesis of this dissertation suggests that by adopting a holistic strategy that combines cutting-edge techniques to purify biogas and improve its conversion into valuable liquid fuels, we can substantially …

Electrospun Nanofiber Technology Based Energy Storage And Biosensor Devices For Wearable Electronics, Bianca Seufert

USF Tampa Graduate Theses and Dissertations

As progress in the field of nanotechnology continues to evolve, it is becoming more and more prevalent to apply this small but powerful technology to portable wearable electronics. The unique scale of such a technology lends its expertise to the investigation of enzymes for biometric related diagnostics or in the development of light weight flexible energy storage devices. Furthermore, as the need for highly precise and durable wearable electronics grows, the next generation of electronics must keep pace with this development in terms of shape, flexibility, functionality, and performance.

The presented research reviews the current state of art of nanofiber …

A Gateway To Next-Generation Patient Monitoring System, Kishore Kumar Kadari

USF Tampa Graduate Theses and Dissertations

Healthcare patient monitoring is undergoing a significant digital transformation, and the integration of Cyber-Physical Systems (CPS) and Artificial Intelligence (AI) is becoming increasingly crucial in reshaping patient care. In an era where digital technology is revolutionizing medical practices, this research aims to take a leading role in advancing a fundamental aspect of predictive and sustainable healthcare practices, enhancing patient outcomes and uplifting the practice of medicine.

This research focuses on the study of Digital Twins for precision health, which are designed to monitor and provide intricate, personalized feedback dynamically during a patient's healthcare experience. The architecture of the system is …

The Experiences Of A Black Teacher Educator Surrounded By Whiteness In Teacher Education: A Critical Autoethnography, Lamicah Lindsey

USF Tampa Graduate Theses and Dissertations

The field of teacher education is dominated by whiteness, perpetuating the influence of white ideologies in designing and implementing teacher education at each phase of the continuum (pre-service teaching, in-service teaching, teacher educators). This study employs a critical autoethnographic approach to examine how my experiences as a Black educator have shaped my social justice pedagogy across the teacher education continuum. It also identifies the supports I received during my journey. The findings reveal persistent racial discrimination throughout all phases of teacher education, as well as struggles with imposter syndrome, self-doubt, racial identity, and fear of the unknown. These findings underscore …

Zeros And Ones: Digital Video Aesthetics And Geopolitical Economy In Blackhat, Everett Barnett

USF Tampa Graduate Theses and Dissertations

Film and media theory has been fundamentally altered by the advent of digital technology, both in terms of film production and broader aesthetic overtures but also in terms of greater digital mediation. Blackhat (Michael Mann, 2015), although not a commercial or critical success, articulates many of the exact circumstances and broader consequences of digital technology in relation to its digital video aesthetics but also its narratives content involving global telecommunication and data systems. As a wholly digital film, Blackhat is uniquely situated to speak not only developments in digital filmmaking but also, by way of its plot line involving stateless …

Understanding Donor Preferences And Intentions: A Theory Of Planned Behavior Approach, Kimberly Cubre

USF Tampa Graduate Theses and Dissertations

Advancement teams have a pivotal role in bridging the ever-widening gap in funding for higher education institutions. As this gap continues to expand, these teams have emerged as increasingly prominent players to raise philanthropic support. This research study is aimed at enhancing the effectiveness of their engagement strategies and gaining a deeper understanding of donor motivations and intentions. Employing the Theory of Planned Behavior in conjunction with a revised and tested survey instrument (as validated by Smith & McSweeney in 2007), this study sheds light on donor behavior. It probes into donors' sentiments regarding the philanthropic tactics and communications they …

Becoming Conscious: An Autoethnographic Study Analyzing The Relationship Between Identity And Leadership, Aaron Izzo

USF Tampa Graduate Theses and Dissertations

This dissertation aims to define the connection between one’s perceptions of self and how one conceptualizes leadership. This study first conceptualized my own identity, seeking to connect my past experiences and interactions with others utilizing a term borrowed from Eastern philosophy, samskara, to see how they impact my current practice within leadership. Within the current body of research, various forms of leadership approaches, such as relational, appreciative, feminist, queer, and conscious leadership, were described and explored. What was found to be missing from the current body of work was a connection between who a person is, how they identify, and …

Human Motion-Inspired Inverse Kinematics Algorithm For A Robotics-Based Human Upper Body Model, Urvish Trivedi

USF Tampa Graduate Theses and Dissertations

The goal of this research is to develop a human motion-inspired inverse kinematics algorithm framework specifically designed for a Robotics-Based Human Upper Body Model (RHUBM). This framework offers solutions to challenges in various fields. In humanoid robotics, the framework addresses the problem of unnatural robot movement by enabling the development of motion planning algorithms that incorporate human-like movements. For prosthetics, the framework tackles the challenge of amputee difficulty in learning and controlling prosthetics by providing a user-friendly interface that predicts and visualizes upper limb movements, enabling learning and practice. In rehabilitation therapy, the framework tackles …

Introductory Chemistry Student Success: Evaluating Peer-Led Team Learning And Describing Sense Of Belonging, Jessica D. Young

USF Tampa Graduate Theses and Dissertations

Identifying approaches that make science and engineering education broader and more inclusive is core to discipline based education research. Both fundamental and applied research are important in advancing a STEM education that retains the necessary scientists of the U.S.’s future. Thus, the major goal of this work was to evaluate and describe efforts that promote student success within introductory STEM courses. This began with applied research by utilizing quantitative analyses like case-matching, logistic regression, independent sample t-tests, and repeated measures while evaluating the efficacy of peer-led team learning (PLTL). Later, this work delves into qualitative approaches to answer fundamental research …

Development Of Data-Driven Models To Predict Chemical Dosage And Energy Intensity For Different Supply Sources Of Drinking Water, Rehnuma Salsavil

USF Tampa Graduate Theses and Dissertations

As part of the UN Sustainable Development Goals (SDG6), access to clean water for the entire population and sustainable management of water resources have been stressed. Demand for water is increasing due to population growth, economic development, water quality degradation, and climate change. More water needs to be produced for the community at lower treatment costs. The chemical dosage and energy intensity are two important factors that influence water treatment costs and sustainable management of resources as well.

Previously, chemical dosage modeling to reduce treatment costs have been explored but there have been more focus in coagulant dosage modeling. Other …

Home Is Where The Work Is: How Biases In Managers’ Resource Allocation Decisions Affect Task Performance In Remote Work Environments, Richard D. Mautz Iii

USF Tampa Graduate Theses and Dissertations

As the use of remote and hybrid work arrangements continues to grow, it is important to understand how these arrangements can yield performance. In this paper, I conduct two studies to examine how the remote work environment affects managers’ task assignment decisions across different task types and how those decisions affect workers’ task performance. First, I survey managers, in both a cross-section of industries and specifically in accounting, to study the effect of remote work on their task assignment decisions. Consistent with prior literature and economic theory, I predict and find that managers are more inclined to assign generative tasks …

Osteoarthritis, Social Role Participation, And Satisfaction With Life: A Quantitative Study Informed By The Social Identity Model Of Identity Change (Simic), Stephanie E. Rosado

USF Tampa Graduate Theses and Dissertations

This cross-sectional survey study utilized an adapted version of the Social Identity Model of Identity Change (SIMIC) to investigate associations between post-diagnostic factors, role salience identity changes, and satisfaction with life for U.S. adults with osteoarthritis (OA). Data were collected from 193 adults with OA using ResearchMatch. Results suggest that role limitations significantly contributed to explaining variations in role salience identity. Furthermore, a positive relationship was observed between change in role salience identity and satisfaction with life. A moderated moderation analysis assessing the interaction effects of satisfaction with role performance and social support on the relationship between role salience identity …

Disability, Blackness, And Online Community: Black Twitter As Self-Narrative, Morgan S. Wilson

USF Tampa Graduate Theses and Dissertations

Black disabled people, especially those with invisible disabilities, are often not included or welcomed by all in the disabled community. In addition, Black disabled individuals also face discrimination and exclusion within the Black community due to ableism. This project will be an investigation of Black disabled community and health culture in online spaces, specifically using Twitter hashtags as a starting point. This research project is about helping to write the whole story, an opportunity that my Black ancestors did not have but still demand, for our generation and those who will come after us. For this project, I conducted an …

Hurricane Impacts On Water Resources: A Look At Nature-Based Solutions To Improve Long-Term Resilience, Fautemeh Sajadi Bami

USF Tampa Graduate Theses and Dissertations

Severe storms are a common occurrence in the state of Florida. Hurricane events may cause hazards such as flooding, property damage, death, and many others. Such far-reaching impacts may potentially result in dangerous consequences where they occur. Of interest to this study were the impacts on water resources and water quality caused by storms. Hurricanes can bring about a deluge. An apparent excess of water may cause the notion of water scarcity to seem less significant. However, problems with potable water can be quite frequent due to storms.

This research sought to address the impacts of severe storms on water …

Caring In Social Studies: An Examination Of Teacher Preparation Standards, Vanializ Agramonte

USF Tampa Graduate Theses and Dissertations

Care is something we expect educators to demonstrate towards their students, but are theythemselves being taught the importance of care in education and prepared to enact it in their classrooms? The existing literature on care and care theory in education is limited, but shows a link between care and student success; many educators also point to anecdotal evidence of the importance of care. This study sought to examine themes of care in national standards for teacher preparation. Through the use of directed qualitative content analysis, three national teacher preparation standards (the Council for the Accreditation of Educator Preparation, the Interstate …

Turkish Preschool Teachers’ Perspectives On The Education Of Advanced Young Learners, Gülçin Bilgener

USF Tampa Graduate Theses and Dissertations

The purpose of this study was to shed light on preschool teachers’ perspectives on education of young advanced preschoolers. I conducted this study in a public preschool in the northwestern neighborhood of a city in the Black Sea Region of Türkiye. While choosing this research site I employed convenience sampling based on the accessibility of individuals and the site (Bloomberg & Volpe, 2012). This study designed as a qualitative study, three semi-structured interviews were used as main data collection methods. Two observation sessions took place during participants’ teaching and these observation notes were used as supporting data. I utilized grounded …

Explorations On Non-Covalent Interactions: From Supramolecules To Drug-Like Molecules, Zhanpeng Zhang

USF Tampa Graduate Theses and Dissertations

Non-covalent interactions are everywhere in our material world. From the microstructures of organisms to the functional materials used in industrial production, whenever matter exists, there are non-covalent interactions between the molecules that build up the matter.The exploration of non-covalent forces helps people understand the intrinsic principles of life processes, it can be applied to create new supramolecular materials as well. Supramolecular chemistry is a research field focusing on the properties and applications of non-covalent interactions. Various non-covalent interactions, such as hydrogen bonds, metal-ligand coordination, π-π interaction, hydrophobic interaction, etc., are objects of research in supramolecular chemistry.

Not only supramolecular chemists, …

Mental Health-Seeking Behaviors For Hispanic Individuals In The United States, Ana Aluisy

USF Tampa Graduate Theses and Dissertations

Purpose: This dissertation examines the complexities of mental health service (MHS) utilization among Hispanic individuals in the United States, elucidating myriad factors influencing help-seeking behaviors within this community.

Methods: This dissertation unpacks the barriers to and facilitators of MHS utilization through an integrative review and two cross-sectional studies among Hispanic college students and residents of El Paso. Additionally, the latter two studies assessed attitudes towards mental health services (ATMHS) within these subgroups.

Results: Barriers to MHS utilization included a preference for the Spanish language and the varied role of gender (male or female). The facilitators of MHS utilization included higher …

Examining Childhood Trauma And Substance Use Problems Among Justice-Involved Adolescents In Florida, Skye C. Bristol

USF Tampa Graduate Theses and Dissertations

The purpose of this dissertation was to assess the relationship between childhood trauma and substance use problems as latent constructs among justice-involved adolescents (JIA). Additionally, racial differences and spatial analyses were examined. Previous research underscores the limitations of conceptualizing childhood trauma solely through Adverse Childhood Experiences (ACEs). This justified integrating child welfare involvement, or out-of-home placement, as an additional indicator to develop a comprehensive scope of childhood trauma among JIA. Furthermore, current literature established that childhood trauma is a key predictor of substance misuse among JIA. However, the lack of a standardized measure of substance misuse across juvenile justice systems …

Iran's Nuclear Program: A Struggle For Security And Modernity, Sina Azodi

USF Tampa Graduate Theses and Dissertations

This dissertation explores the historical evolution of Iran's nuclear program from its inception in the 1950s to the signing of the Joint Comprehensive Plan of Action (JCPOA) in 2015. It examines how threat perceptions have, over the decades, influenced Iran's nuclear posture, leading the Iranian political leadership to adopt a hedging strategy that extends beyond changes in ruling regimes. This study employs the Proliferation Strategy Theory (PST) as its theoretical foundation. This framework helps in dissecting the dynamics between threat perceptions and the candidate state's adopted nuclear posture. The principal findings of this dissertation highlight the direct impact of regional …

Modeling Studies Of An Intensified Reforming/Fischer-Tropsch Synthesis Process For Gas To Liquid Conversion, Brian Gray

USF Tampa Graduate Theses and Dissertations

Despite rigorous study and advancement in fields of green energy, the world's transportation industry remains poised to continue reliance on liquid hydrocarbon fuels. To date, the primary source of diesel and jet fuels is the petroleum industry; however, continuing trends in rising greenhouse gas emissions present a need for study into processes for the production of synthetic hydrocarbon fuels. The most promising technologies to meet this goal are gas-to-liquid (GtL), biomass-to-liquid (BtL) and coal-to-liquid (CtL). The commonality of these technologies is that they utilize a feedstock to produce carbon monoxide and hydrogen gas (syngas) which becomes the building blocks of …

Multiple Shots To Understanding Gun Violence, Lexi Gill

USF Tampa Graduate Theses and Dissertations

Gun violence is a ubiquitous issue across the United States, and recently, gun violence surpassed the previously recorded highest rates. Each year, tens of thousands of individuals lose their lives to gun-related violence. Gun violence is the leading cause of death among youth and disparately impacts young Black men. Some suggest gun violence is a social contagion that transmits from one individual to another and circulates through certain communities, suggesting gun violence can be “cured” with the appropriate treatment. Despite the proliferation of gun violence, current research on gun violence is underdeveloped. It is imperative to assess gun violence from …

On The Subelliptic And Subparabolic Infinity Laplacian In Grushin-Type Spaces, Zachary Forrest

USF Tampa Graduate Theses and Dissertations

This thesis poses the ∞-Laplace equation in Grushin-type spaces. Grushin-type spaces G are defined by the vector fields which serve as a basis for their tangent spaces; by weighting the canonical (Euclidean) directional vectors {∂/∂x_i}ⁿ_i=1 by functions ρ_i that obey certain technical assumptions, we produce a class of metric spaces in which certain directions may not be accessible at all points in the space. We prove the existence and uniqueness of viscosity solutions to both Dirichlet problems and Cauchy-Dirichlet problems involving the∞-Laplacian over bounded Grushin-type domains. The main tool in proving uniqueness of …

Community-Centered Early Warning For Outbreaks In Humanitarian Emergencies: Evaluating Community-Based Surveillance For Priority Communicable Diseases Among Internally Displaced Populations In Iraq, Caitlin M. Wolfe

USF Tampa Graduate Theses and Dissertations

Background: Community based surveillance (CBS) is the organized and rapid collection of information from health events identified in the community and includes the systematic detection and reporting of events of public health significance. While used globally to enhance the detection of priority diseases, CBS has not been routinely deployed in Iraq, where a once-robust health system has been devastated by decades of war, international sanctions, and large-scale population displacement. During infectious disease outbreaks, it is imperative to quickly detect and isolate suspect cases, investigate confirmed cases, and trace and monitor the contacts of confirmed cases. The COVID-19 pandemic underscored the …

Improving Medical Image Classification Accuracy Through Unsupervised Segmentation And Confounder Mitigation With Limited Data, Nikolai Fetisov

USF Tampa Graduate Theses and Dissertations

Medical images are indispensable for assisting health care professionals to make more accurate cancer diagnosis and prognosis decisions. Several image modalities exist including, but not limited to, histopathology or whole slide images (WSI), computed tomography (CT), positron emission tomography (PET) and radiography (i.e., X-Ray), each having their own application in clinical practice.

Today, machine learning and deep learning methods have evolved to the point of being practically usable. These approaches learn and extract knowledge from data to make possible automating certain tasks. At the point of writing this dissertation, they have reached human-level performance in general image recognition tasks, became …

Interfacial Magnetism And Anisotropy In Dirac And Weyl Semimetals, Noah Schulz

USF Tampa Graduate Theses and Dissertations

Semimetals have gained intense interest recently due to their exotic magnetic and electronic properties. One of the most widely studied semimetals is graphene, a Dirac semimetal. The utilization of graphene in devices and sensors requires interfacing it with other materials, which may induce potentially strong interfacial effects. Furthermore, graphene alone does not possess magnetic order. Studying the interfacial effects between graphene and magnetic materials is therefore of great importance in the application of graphene to meet modern technological needs. Furthermore, by understanding the fundamental interfacial physics between graphene and magnetic materials, new properties can be unlocked, broadening the possible applications …

An Analysis Of Florida Manatee (Trichechus Manatus Latirostris) Rescues (1993-2022) With Recommendations For Future Rehabilitation Program Needs, Katherine Frisch

USF Tampa Graduate Theses and Dissertations

Florida manatees (Trichechus manatus latirostris) are threatened marine mammals that inhabit the coastal and near shore waters along the southeastern United States, primarily Florida. Manatee conservation is multi-faceted. One component of the manatee recovery program is the rescue and rehabilitation program that provides care for sick, injured and orphaned manatees. The science of conservation biology, whose goal is to maintain biodiversity using a multidisciplinary approach, can be applied to aspects of the manatee rescue and rehabilitation program.

A federally authorized, state implemented, rescue system has been in place for many years to rescue and treat injured and orphaned animals. Rescued …

Integrating Identities By Segmenting Domains: Antecedents Of Work-Maternal Identity In The Postpartum Return To Work, Aashna M. Waiwood

USF Tampa Graduate Theses and Dissertations

As employed women have children and return to work, they encounter a cross-domain identity transition where their professional and maternal identities are consistently co-activated and must perceptually contend with one another. In this dissertation, I explored this potential for harmonious assimilation of work and parental identities within this postpartum transitory period via a novel construct termed “work-maternal identity (WMI).” Specifically, I examined how working remotely in integrated work and home environments is related to WMI, as mediated by job engagement and perceptions of work belongingness. I also incorporated factors critical to successful resocialization and related to boundary management as moderators …

Leveraging Systems Thinking For Global Environmental Health, Martha M. Mcalister

USF Tampa Graduate Theses and Dissertations

Environmental health inequities such as household air pollution, inadequate water, sanitation, and hygiene, and chemical pollution persist globally and have myriad consequences on individual and societal well-being. Unfortunately, while billions of dollars and countless hours of research have been applied towards addressing these issues in development, humanitarian, and environmental justice contexts, attempts to reduce the environmental burden of disease can seem successful at first, but then backslide to pre-intervention conditions (or worse). This is indicative of policy resistance, a tendency of complex systems that makes it very difficult to enact change if the “rules” of the system are misunderstood. There …

Effects Of Diminazene Aceturate On Drosophila Melanogaster: A Lipidomic Analysis, Gabriela Suarez

USF Tampa Graduate Theses and Dissertations

Pesticides are agents designed to eradicate living organisms to preserve agricultural needs.¹ Today the most commonly used pesticides are termed “modern pesticides”, they are characterized by lower lipophilicity and limited stability, making them less time persistent in the environment. Among these modern pesticides are organophosphorus, urea, phenoxy alkanoic, triazine, chloroacetanilide, and glyphosate-based pesticides.² The issue faced with most of these pesticides is that they affect more than just the targeted pest and pose a danger to not only humans, but also entire ecosystems.^1,3,4 While there are many different types of pesticides, insecticides show the most variance and …