Digital Commons Network^™

Simulation And Verification Of Phase Change Materials For Thermal Energy Storage, Marwan Mosubah Belaed

USF Tampa Graduate Theses and Dissertations

Greenhouse gas (GHG) emissions have a global impact on world economies and the ecosystem. Scientific assessment of GHG emissions is an issue that requires immediate action from key decision-makers and influencers. A comprehensive review of the impact of climate change and its dire consequences on daily life is illustrated in this dissertation. The most common technique to lower GHG emissions in the atmosphere is by switching GHG emission sources to zero-emission sources such as solar energy, wind energy, bioenergy, and geothermal power. Recently, all these technologies have made significant progress in lowering capital operation costs and their cycle efficiencies. This …

Vocal Health Of Choral Singers From Kenya And The United States: Dysphonia And Vocal Fatigue In Relation To Musical Genres, Morgan Jolley Burburan

USF Tampa Graduate Theses and Dissertations

The purpose of this mixed-methods study was to investigate the vocal health of choral singers from Kenya and the United States and to determine whether genre (classical choral, traditional Kenya, and Contemporary Commercial Music [CCM]) had any impact on healthy vocal production, particularly as it related to vocal fatigue. Participants were adult singers (N = 94) in two semi-professional choirs, the Nairobi Chamber Chorus (NCC) from Kenya (n = 25) and the Festival Singers of Florida (FSOF) from the United States (n = 69). Singers’ perceived overall vocal health was measured using multiparametric clinical self-reporting instruments and acoustical assessment. Singers’ …

Climate Change And Liberation In Latin America, Ernesto O. Hernández

USF Tampa Graduate Theses and Dissertations

The purpose of this dissertation is to propose the liberation movements in Latin America as alternative philosophical frameworks to the crisis of climate change. These movements have provided the grounds to identify inequities and injustices and have practiced ethical methodologies to overcome them. Additionally, the movements seek to represent and reflect the value of non-traditional philosophical agents in Latin America. The work focuses on four major Latin American ecological liberation movements; theology, philosophy, pedagogy, and feminism. Eco-Theology advances the role of Religion as the practice of Religação, reexamination, and resetting our relationship with nature by reconnecting with it. Eco-Philosophy of …

Socially Aware Network User Mobility Analysis And Novel Approaches On Aerial Mobile Wireless Network Deployment, Ismail Uluturk

USF Tampa Graduate Theses and Dissertations

Service demand patterns for wireless networks are evolving with the technological developments in areas such as personal computing, unmanned vehicles, and internet-of-things, where increasing mobile service demand is one of the significant challenges introduced. In addition to these new intrinsic dynamics, natural disasters and societal upheaval are also disrupting the conventional patterns of network demand. Situations like damaged infrastructure due to a natural disaster or large numbers of displaced people caused by political strife and social upheaval demand flexible, rapidly deployable network architectures. The increasing demands of next-generation communication services are straining the capabilities of the traditional approach of the …

Identity, Breakdown, And The Production Of Knowledge: Intersectionality, Phenomenology, And The Project Of Post-Marxist Standpoint Theory, Zachary James Purdue

USF Tampa Graduate Theses and Dissertations

After breaking with the Marxist tradition, feminist standpoint theory operated without a backing framework and explanation for the privileged perspective of the oppressed. This project investigates phenomenology and breakdown as an alternative framework and explanatory mechanism for standpoint theory. I attempt to show how certain phenomenological programs are able to "back up" the claims of standpoint theory, and I argue that such a phenomenological standpoint theory can be coherent with intersectionality.

Chapter 1 focuses on intersectionality and standpoint theory, and surveys the controversy over their demarcation. This discussion allows me to develop several desiderata for theory of identity and knowledge, …

Lost Without A Connection: Analyzing Netflix's Maniac In The Digital Streaming Age, Eric Bruce

USF Tampa Graduate Theses and Dissertations

With the emergence and rise in popularity of streaming services such as Netflix or Hulu, the way in which audiences view and interact with media, as well as each other, has changed drastically. The move to digital streaming impacts how audiences everywhere experience and expect immediacy in media, connecting deeper with what they watch. Along with this transition in spectatorship comes a shift in visual aesthetics, a trend that can be seen across various digitally-streamed series. This thesis serves to address what this transition is and how it affects the cultural landscape of the digital age, continuing the conversation of …

Mental Health And In-Prison Experiences: Examining Socioeconomic And Sex Differences In The Effect Of Mental Illness On Institutional Misconduct And Disciplinary Segregation, Rachel E. Severson

USF Tampa Graduate Theses and Dissertations

Mental health problems have become a common occurrence in American correctional settings. This occurrence is not equally distributed in terms of gender; incarcerated women have higher rates of mental illness incarcerated men (Bronson & Berzofsky, 2017; James & Glaze, 2006). This phenomenon is problematic as research suggests that American correctional institutions are ill equipped to treat and manage inmates with mental health problems (Arrigo & Bullock, 2008; Bennion, 2015; Clark, 2018). This is also true in women’s prisons as they are often tasked to deal with strict budgetary restrictions and have fewer resources compared to men’s prisons (Holsinger, 2014; Stephan, …

Hiding Under The Sun: Health, Access, And Discourses Of Representation In Undocumented Communities, Jaime Shamado Robb

USF Tampa Graduate Theses and Dissertations

This project examines how undocumented immigrants in the United States communicate health and illness, specifically focusing on health narratives of undocumented immigrants in the South Florida region. In order to do this, I conducted 27 field interviews with undocumented immigrants living in South Florida to gain understanding of how this group meets health and wellness needs. Conversations revolved around prominent themes that highlighted the role of communication that produce stigma towards this group; the complexity of a costly bureaucratic health system, and the fears participants experience that stems from the possibility of deportation. Additionally, participants detailed the role of their …

School District Responses To Food Insecurity And Poor Nutrition In High Poverty Communities, Richard Grayes

USF Tampa Graduate Theses and Dissertations

Food insecure households are described as not having enough money or other resources to meet certain needs of all of their family members at some point during the year. Milam and Towns (2014) observed, “Child hunger exists in every county in every state” (p. 2). The hunger gap has been found to contribute to the lower academic achievement of students of color, particularly those from low-socioeconomic status (Jyoti, Frongillo, & Jones, 2005).

The purpose of this study was to explore the impact of food insecurity and poor nutrition on student learning and to review district responses, particularly in elementary schools …

“They Will Think We Are The Cancer Family”: Studying Patterns Of Cancer Disclosure And Communication Among Indian Immigrants In The United States, Kanan Mehta

USF Tampa Graduate Theses and Dissertations

Studies of Indian immigrants in Western countries show that the rates of cancer increase significantly within a generation in the host country. The negative social perceptions associated with health outcomes of cancer often perpetuate limited disclosure regarding the diagnosis of cancer among patients and families. This can result in disrupted communication in clinical settings, while causing increased stress among patients and caregivers. These findings demonstrate the need for studying lived experiences of cancer-related illness and its impacts on social relationships in the domestic and public sphere.

This study explored cancer disclosure and communication among Indian immigrants in the United States …

Communication Skills In Medical Education: A Discourse Analysis Of Simulated Patient Practices, Grace Ellen Peters

USF Tampa Graduate Theses and Dissertations

Communication is regarded as one of the most important skills physicians develop. The most common approach for training medical students to be skilled communicators is by way of simulated patients, who are persons hired by a medical school to perform the role of patient for medical students in simulated consultations and assess those students on their communication skills. In this project, I examine how communication skills are conceptualized by looking at how they occur as a practice. My analysis focuses on the Communication Skills Learning Center, an organization designed to train medical students to be skilled communicators through consultations with …

Managing At The Intersection: The Negotiations Of Racialized Role Strain Of Black Mid-Level Student Affairs Administrators At Predominantly White Institutions, David Frank Hibbler Jr.

USF Tampa Graduate Theses and Dissertations

The purpose of this qualitative interview study was to identify the unique stressors Black mid-level student affairs administrators encounter, how they cope with such stressors, and the perceived consequences of these encounters and coping mechanisms. Data for this qualitative interview study was collected from face-to-face interviews with eight Black mid-level student affairs administrators at predominantly White institutions in the U.S, and from and an optional diary entry. Findings revealed that participants experienced racialized role strain as a result of interactions with White peers and supervisors, same-race peers, and navigating campus climate. Specifically, the Black mid-level participants experienced strain in their …

The Evolution Of Esea: A Language And Four-Dimension Analysis, Ann M. Meggs

USF Tampa Graduate Theses and Dissertations

Title I of ESEA was and continues to be the largest single funding source to support our nation’s most struggling students (Davis, 1999). The purpose of this study was to draw on policy and language analysis perspectives to examine changes in ESEA, specifically in Title I Part A, through its reauthorizations as the No Child Left Behind Act (NCLB) and the Every Student Succeeds Act (ESSA). A language analysis of the texts of these acts found changes in key specific language between each reauthorization, affecting the intent and scope of the original ESEA (1965) legislation. Four dimensions of a conceptual …

Post-Overlay Flexible Pavement Performance Modeling And Its Application In Sustainable Asphalt Overlay Policy Making, Chunfu Xin

USF Tampa Graduate Theses and Dissertations

Highway pavement is a critical component of the highway transportation infrastructure. After the construction of a pavement system, pavement condition will deteriorate over time due to a combination effect of material aging, traffic loading, and environmental impact. To restore the pavement performance and to reduce its adverse effects on public users and environment, asphalt overlay activities are conducted frequently during the service life of a pavement. As a key component that bridges the overlay policies with future pavement performance, economic cost and environmental impact, the forecast accuracy of post-overlay pavement performance model is extremely important. However, most of previous studies …

Hybrid Electro-Plasmonic Stimulation Of Primary Neurons, Ratka Damnjanovic

USF Tampa Graduate Theses and Dissertations

Biomedical prosthetics utilizing electrical stimulation have limited, effective spatial resolution due to spread of electrical currents to surrounding tissue, causing nonselective stimulation. So, precise spatial resolution is not possible for traditional neural prosthetic devices, such as cochlear implants. More recently, alternative methods utilize optical stimulation, mainly infrared, sometimes paired with nanotechnology for stimulating action potentials, which has its own drawbacks, as it may heat surrounding tissue. Recently, we employed plasmonic stimulation methods utilizing gold nanoparticle-coated nanoelectrodes to convert visible light pulses into localized surface plasmon resonance transduction for stimulation of electrically excitable cells, which had limited success. Here, we report …

Rapid Cross-Section Imaging With Magnetic And Impedance Sensors For Grout Anomaly Detection In External Post-Tensioned Tendons, Hani Freij

USF Tampa Graduate Theses and Dissertations

Post-tensioned (PT) bridges have had severe corrosion issues with tendons that fail suddenly without prior notice. The corrosion of external post-tensioned tendons has been associated with grout deficiencies/anomalies from inadequate grouting. Deficiencies include voids, regions of chalky low strength grout, and regions where excessive water content or even free water is present. In those zones mechanical bonding of strand to the grout is degraded and, of more concern, the strand steel risks corrosion failure reducing the expected lifespan of the structure. As tendons are critical structural components, it is important to detect those deficiencies during inspection preferably by a cross …

Complexities Of Data, Tasks And Workflows In Health It Management, Gaurav Jetley

USF Tampa Graduate Theses and Dissertations

This dissertation focuses on three key aspects in health IT management: (1) Complexities in the collection of health data in electronic health record (EHR) systems and the use of EHR data in research, (2) Complexities of collaboration between physicians and AI for improving healthcare delivery, and (3) Complexities of workflows and collaborations between healthcare organization (HCO) staff during the delivery of care. The first dissertation essay (Chapter 1) examines the key data quality issues that arise in recorded health information in EHR systems, provides quality thresholds that the data needs to meet for mitigating errors and increasing reproducibility of downstream …

Parent Perceptions Of The Acceptability, Effectiveness, And Experience Of Engaging In The Group Stepping Stones Triple P Intervention For Parents Of Children With Disabilities, Tara B. Delach

USF Tampa Graduate Theses and Dissertations

The challenges associated with parenting are often compounded for parents of children with developmental disabilities. Children with developmental disabilities are at increased risk for exhibiting mental health concerns and challenging behavior compared to their typically developing peers. Parents who are raising a child with a disability tend to experience increased demands, higher levels of stress, and greater challenges associated with the physical, emotional, and behavioral needs of their children than do parents of typically developing children. Parent training interventions grounded in social learning theory and behavioral principles have proven to be effective in improving both child and parent outcomes in …

Differences In Knowledge Acquisition, Perceived Engagement And Self-Efficacy In Latino Promotores Delivering The Heart Disease Prevention Program Su Corazόn, Su Vida, Samuel Matos-Bastidas

USF Tampa Graduate Theses and Dissertations

Su Corazόn, Su Vida (Your Heart, Your Life) is a community-based, small-group health intervention designed to empower Latinos to enhance cardiovascular disease awareness and initiate enduring lifestyle changes to improve health outcomes and quality of life. Originally developed to be delivered in weekly sessions in Spanish or English language, it addresses several heart disease risk factors including unhealthy eating habits, poor physical activity, high cholesterol, overweight, metabolic syndrome, diabetes and tobacco smoking, among others. Instructors use diverse learning and support strategies such as group discussion, role modeling, problem-solving, health action planning, and self-monitoring. Participants help each other to stay on …

Auditory Perception And Neural Encoding Of Spectral Modulation, Sittiprapa Isarangura

USF Tampa Graduate Theses and Dissertations

Most natural acoustic sounds consist of multiple frequencies. An important auditory perceptual ability to resolve such acoustic properties is referred to as spectral processing and includes frequency resolution, frequency selectivity and spectral envelope perception. Frequency resolution, as demonstrated by masking techniques, indicates that our auditory system functions as an auditory filter bank with overlapping bandpass filters. These filters allow for the effective separation of sounds into different frequency bands or channels. Acoustic components that fall within a given filter or passband are considered to be processed “within channel” and are perceptually resolved using “local” spectral cues, whereas components in different …

Making Meaning Of A Whole School Transformation Model: A Policy Ethnography Of A Schools Of Hope Legislation Implementation, Adam Charles Rea

USF Tampa Graduate Theses and Dissertations

Cheryl High School (CHS) is a geographically large county in Florida that received funding through the state of Florida's "Schools of Hope” grant. The grant’s parameters called on Carter County Schools (CCS) to partner with an external consultant and a research university to help improve teacher and school administrative capacity. The district chose Scientific Pedagogy Services (SPS) and to continue their existing relationship with Tampa Bay State University (TBS). The consultant’s mission was to improve school performance through a unique form of professional development. TBS was charged with developing an on-site program that funded staff efforts to obtain advanced degrees …

Orally Administered Nanoscale Drug Delivery System For Colorectal Cancer, Bhavya Shah

USF Tampa Graduate Theses and Dissertations

Mithramycin-A (Mit-A) is a US Food and Drug Administration (FDA) approved chemotherapeutic agent that is used for the treatment of testicular cancer. According to previous studies, Mit-A has shown promising results in targeting colorectal cancer (CRC) and cancer stem cells (CSCs) which are responsible for a highly invasive and metastatic forms of CRC. The use of Mit-A as chemotherapy is limited in CRC due to its toxicity. To minimize its toxicity, we have developed an orally delivered nanoscale drug delivery system by which Mit-A can be delivered using biocompatible and biodegradable materials. Mit-A nanoparticles were prepared using Poly(lactic-co-glycolic acid) as …

Polycyclic Aromatic Hydrocarbon Exposure, Hepatic Accumulation, And Associated Health Impacts In Gulf Of Mexico Tilefish (Lopholatilus Chamaeleonticeps), Susan M. Snyder

USF Tampa Graduate Theses and Dissertations

Following the 2010 Deepwater Horizon oil spill, systematic demersal longline surveys were conducted throughout the Gulf of Mexico (GoM) continental shelf to evaluate polycyclic aromatic hydrocarbon (PAH) exposure, hepatic accumulation, and health indices in demersal fishes. Tilefish (Lopholatilus chamaeleonticeps) were chosen as a target species due to high vulnerability to environmental disturbance, commercial importance, Gulf-wide distribution, and documented high exposure to PAHs post-Deepwater Horizon. Over 200 Tilefish were sampled in the north central GoM at repeat stations from 2012 to 2017, and from the northwest GoM, southwest GoM, Bay of Campeche, and Yucatán Shelf over years 2015 and 2016. Tilefish …

Toxic Colonialism And Green Victimization Of Native Americans: An Examination Of The Genocidal Impacts Of Uranium Mining, Averi R. Fegadel

USF Tampa Graduate Theses and Dissertations

While the field of criminology has delved into environmental justice issues in Black communities through the exploration of urban exposure to toxins, it has failed to expand this research orientation to examine issues affecting peoples in different locations, which in the U.S. draws attention to the green victimization of Native Americans. In short, existing criminological research has largely ignored the social, economic, and environmental injustices experienced by Native Americans. This study addresses this research gap by exploring environmental justice issues as they relate to the ways toxic colonialism affects Native Americans. Specifically, this study confronts historic and current struggles endured …

Governmentality, Biopower, And Sexual Citizenship: A Feminist Examination Of Sexual And Reproductive Healthcare Experiences Of 18-24 Year-Olds In The U.S. Southeast, Melina K. Taylor

USF Tampa Graduate Theses and Dissertations

Sexual and reproductive healthcare in the U.S. is a contentious and often stigmatized topic. Conservative politics and Christian religious ideology guide laws and policies that inform narratives of sexual citizenship that promote white, heterosexual, procreative, cis-gendered relationships as the ideal. For young people, exposure to sexuality education greatly influences their self-identity as sexual citizens and guides how they form intimate relationships. While sexual and reproductive healthcare has been included marginally in the discipline of anthropology, almost no research has focused on young people’s sexual and reproductive healthcare within the U.S.

This dissertation examines the viewpoints and experiences of 18-24 year-old …

Investigating Mechanisms Of Immune Suppression Secondary To An Inflammatory Microenvironment, Wendy Michelle Kandell

USF Tampa Graduate Theses and Dissertations

The immune system plays a dynamic role in cancer progression. The theory of immunoediting suggests that the relationship between the tumor cell and the immune cell is one that is in flux: initially highly active and responsive to tumor antigen to one that has escaped immune responsiveness. Once the tumor has formed and effectively “escaped”, there are multiple mechanisms that work against a conventional immune response. The tumor cell clones that have escaped the elimination phase are those that are less immunogenic. These clones downregulate MHC, have increased apoptosis through DAMP-driven mechanisms, and suppressive cell phenotypes are driven through cytokine-driven …

Fields Brook Superfund Site: Race, Class, And Environmental Justice In A Blasted Landscape, Richard C. Bargielski

USF Tampa Graduate Theses and Dissertations

In 1980, the United States Congress passed the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA). This federal law provided the U.S. Environmental Protection Agency (EPA) with the legal tools necessary to pursue polluters who had improperly stored or disposed hazardous wastes. Since its passage, more than a thousand sites have been added to the National Priorities List (NPL), but only a fraction have been cleaned up. Proponents of neoliberalism argue that aggressive environmental policies such as CERCLA harm workers by making it impossible for businesses to operate profitably. This coincides with a drop of nearly 50% in the U.S. …

Large Thecosome Pteropods Of The Northern Gulf Of Mexico: Species Abundance, Spatial And Vertical Distribution With A Temporal Comparison Of Shell Thickness, Sarah M. Shedler

USF Tampa Graduate Theses and Dissertations

Large thecosome pteropods have a significant role in the pelagic ecosystem of the northern Gulf of Mexico (GoM). This research analyzed species abundances, vertical and horizontal distributions, and trends in shell thickness between 2011 and 2015. Pteropod samples were collected following the 2010 Deepwater Horizon oil spill by two midwater sampling programs: the Offshore Nekton Sampling and Analysis Program (ONSAP, 2011) and the Deep Pelagic Nekton Dynamics of the Gulf of Mexico (DEEPEND, 2015). All samples were collected using a 10-m2 Multiple Opening/Closing Net and Environmental Sensing System (MOC10) midwater trawl, with 3-mm mesh size. This gear sampled five discrete …

Bond Life Of Structural Epoxy-Concrete Systems Under Accelerated Hygrothermal Aging, Philip W. Hopkins

USF Tampa Graduate Theses and Dissertations

A laboratory study was conducted to investigate possible quantitative and qualitative methods for determining the bond life of structural epoxies externally bonded to concrete substrates. Three concrete mixtures, two surface preparation methods, and three structural epoxies were used creating eighteen combinations of bonded systems. Direct tension (pull-off) specimens were prepared from which a subset was submerged in heated water per a prescribed accelerated aging protocol for up to 200 days. A novel test fixture was designed to facilitate controlled-rate testing of the pull-off specimens. A total of 324 specimens were intermittently removed from submersion exposure and tested without replacement. An …

The Geopolitics Of Juan Perón: A New Order For An Imperfect World, Robert D. Koch

USF Tampa Graduate Theses and Dissertations

In 1973, Juan Domingo Perón (1895-1974) proposed a new world order to the Non-Aligned Movement, shortly before returning to the Argentine presidency after eighteen years in exile. He was Argentina’s most important modern figure but divisive. The military toppled Perón in 1955, and then outlawed him and Peronism. They considered his nationalism and authoritarian methods fascist nightmares, and United States officials passed similar judgments despite his victories in democratic elections. Today, his ideas continue to influence Argentina, the Non-Aligned Movement, and the Vatican, yet, his authoritarianism and origins in a dictatorship taint his legacy. Influential media and scholars use him …