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Mapping Reward Values To Cues, Locations, And Objects: The Influence Of Reward Associations On Visual Attention, Constanza De Dios

USF Tampa Graduate Theses and Dissertations

Previous work has attempted to fit reward-driven attentional selection as being exogenous (stimulus-driven) or endogenous (goal-driven). However, recent work suggests that reward’s effects on attention depend on the type of stimulus feature that the motivational information is imparted during learning (incentive salience). If true, then reward should not be limited to solely impacting early perceptual or late categorization processes attention. The current study used event-related potentials (ERPs) to test the idea that reward’s effects on attention depend on the process that the reward information is embedded – early perceptual or late categorization. Results demonstrated reward-driven effects on perceptual representation when …

An Eye Opener In Stroke: Mitochondrial Dysfunction And Stem Cell Repair In Stroke-Induced Retinal Ischemia, Hung Vu Thien Nguyen

USF Tampa Graduate Theses and Dissertations

Stoke is a leading cause of disability and mortality across the globe, making it a global health crisis. However, treatments for stroke remain limited with narrow therapeutic time window. Visual impairment negatively affects patients’ quality of life. During stroke, the disruption in blood flow might affect both brain and eye resulting in cerebral and retinal ischemia. Currently, there is a lack of treatment option that targets both cerebral and retinal ischemia. Ischemic stroke pathology is complex and multiphasic. The ischemic event is followed by a secondary cascade of inflammatory cytokines exacerbating the initial focal injury and expanding into the penumbra. …

Targeting Pten For Therapy In Cancer And Ptenopathies, Emily Palumbo

USF Tampa Graduate Theses and Dissertations

PTEN, a dual protein and lipid phosphatase, regulates a myriad of cellular functions including PI3K pathway signaling, cell migration, proliferation, invasion and apoptosis. PTEN mutations often lead to multiple malignancies, including prostate, breast, endometrial, skin and brain cancers, associated with hyperactive PI3K signaling. PTEN mutations have also been associated with a variety of other diseases, classified as PTEN Hamartoma Tumor Syndromes (PHTS). In addition, compromised function or reduced expression of PTEN due to non-genomic mechanisms are associated with many types of hyperproliferative diseases, such as restenosis and neoplastic diseases, including melanoma, lung, breast, prostate and colon cancers. Although PI3K pathway …

Optimizing Early Intervention For Preschoolers' Vocabulary Development, Lindsey A. Peters-Sanders

USF Tampa Graduate Theses and Dissertations

Preschool is a critical time in children’s oral language and pre-literacy skill development, but this development varies greatly among children. Those with smaller vocabularies are at greater risk for developing future language and reading difficulties that persist throughout their education. Because vocabulary knowledge is essential for later reading success, early instruction in preschool is key. To better understand how to enhance preschoolers’ word learning, the current dissertation contains three studies that examined the benefits of explicit vocabulary instruction and identified the factors that best facilitated vocabulary learning among a diverse group of young children. To aid in the early identification …

The Tampa Gym Study: An Ethnographic Exploration Of Gyms, Female Gym-Goers And The Quest For Fitness In Tampa, Fl, Danielle Reneé Rosen

USF Tampa Graduate Theses and Dissertations

The Tampa Gym Study was an ethnographic examination of veteran women exercisers, their workout routines, and their attitudes towards the workouts that they undertake in two Tampa area gyms. The study’s principle objective was to study “fitness culture” in these facilities and the manner in which that culture is embodied in the language women use to describe themselves and their exercise behaviors.

The obesity crisis in the United States has been significantly responsible for an increase in membership in gyms and fitness facilities nationwide. The “culture of fitness” as it is embodied in these facilities has impacted women and their …

In Another's Voice: Making Sense Of Reproductive Health As Women Of Color, Nivethitha Ketheeswaran

USF Tampa Graduate Theses and Dissertations

The goals of this project are twofold. The first goal is to articulate my sense making of reproductive health for Women of color in the United States as a postcolonial condition; one that I trace back to the logics of elimination of settler colonialism (Wolfe, 2006) and frame as maintained through the colonial institutions, or racial projects (Omi & Winant, 2015), of the Prison Industrial Complex, the welfare system, and the health care system which create and perpetuate dominant cultural narratives of “the welfare queen”, “the negligent Black mother”, and “the wily patient”. I show how these narratives colonize the …

Bamboo As A Sustainable Engineering Material: Mechanical Properties, Safety Factors, And Experimental Testing, Lorena Sánchez Vivas

USF Tampa Graduate Theses and Dissertations

With exponential global population growth occurring and associated environmentally destructive consumption of natural resources, alternative materials that are fast growing and sustainable are being sought out to satisfy human needs. One material that is fast growing and sustainable that can be used to meet most basic needs of humans (i.e. shelter, food, tools) is the plant bamboo, of the grass family Poaceae. Bamboo was used in the past by native peoples who lived in the environment where bamboo natively grows (all continents except Europe and Antarctica) with proven success for uses such as shelter, piping, tools, wells, food, fencing, baskets …

Statistical Learning Of Biomedical Non-Stationary Signals And Quality Of Life Modeling, Mahdi Goudarzi

USF Tampa Graduate Theses and Dissertations

Statistical learning is a set of tools for modeling and understanding complex datasets. It is a recently developed area in statistics and blends with parallel developments in computer science and, in particular, machine learning.

The classification of biomedical non-stationary signals such as Electroencephalogram (EEG) is always a challenging problem due to their complexity. The low spatial resolution on the scalp, curse of dimensionality, poor signal-to-noise ratio are disadvantages of working with biomedical signals. EEG signals are unstructured data which needs preprocessing steps to extract informative features which are measurable and predictive. In the first two chapters of this dissertation, EEG …

Hierarchical Self-Assembly And Substitution Rules, Daniel Alejandro Cruz

USF Tampa Graduate Theses and Dissertations

A set of elementary building blocks undergoes self-assembly if local interactions govern how this set forms intricate structures. Self-assembly has been widely observed in nature, ranging from the field of crystallography to the study of viruses and multicellular organisms. A natural question is whether a model of self-assembly can capture the hierarchical growth seen in nature or in other fields of mathematics. In this work, we consider hierarchical growth in substitution rules; informally, a substitution rule describes the iterated process by which the polygons of a given set are individually enlarged and dissected. We develop the Polygonal Two-Handed Assembly Model …

Mhealth Elisa System For Point-Of-Care, Arsenii Zhdanov

USF Tampa Graduate Theses and Dissertations

Enzyme-linked immunosorbent assay (ELISA) is one of the most important technologies for biochemical analysis critical for diagnosis and monitoring of many diseases. Traditional systems for ELISA incubation and reading are expensive and bulky, thus cannot be used at pointof- care or in the field. Here, we design and demonstrate a new miniature mobile phone based system for ELISA. This mHealth system can be used to complete all steps of the assay, including incubation and reading. It can be fabricated at low cost, portable, and can transfer test results via mobile phone. We have designed the sample dispensing system, incubation chamber, …

A Multi-Dimensional Macrolevel Study Of Drug Enforcement Strategies, Heroin Prices, And Heroin Consumption Rates, Alexander G. Toth

USF Tampa Graduate Theses and Dissertations

American policy makers primarily embrace a deterrent-based policing agenda to curb illicit drug trafficking and use that relies on the principles of the economic price elasticity of demand (Boynum & Reuter, 2005). This counter-drug platform includes three fundamental programs: arresting offenders, seizing illicit drugs, and eradicating horticultural sources of illicit drugs (U.S. DEA, 2015). One of the main goals of these programs is to deter illegal trafficking and use by increasing the price of illicit substances so they are no longer attractive to consumers. The United States has weathered various drug use epidemics during its history, and currently it is …

Ischemic Tissue Cell Therapy, Paul R. Sanberg, Alison E. Willing

USF Patents

The present invention is directed to compositions and methods for treatment of ischemic diseases and conditions, particularly myocardial, CNS/brain and limb ischemia. More particularly, the present invention provides methods of treating disorders by administering monocytes obtained from blood, including umbilical cord blood, peripheral blood, or bone marrow to an individual in need of treatment, wherein the drug is administered to the individual at a time point specifically determined to provide therapeutic efficacy. In one embodiment, the cells are for injection into ischemic myocardium for the treatment of angina.

Home-Based Cognitive Monitoring: The Role Of Personality And Predictors Of Adherence And Satisfaction, Nasreen A. Sadeq

USF Tampa Graduate Theses and Dissertations

Over the last several decades, a growing awareness of the benefits of regular screening for common health conditions, such as cancer and cardiovascular diseases, has paved the way for preventative screenings to become routine in medical settings. Given that cognitive impairment is frequently reported as the number one worry of older adults, home-based cognitive monitoring may be an innovative solution that allows middle aged and older adults to take an active role in monitoring an important aspect of their health. Although several home-based cognitive monitoring programs have been validated for use in clinical and home-based settings, the Cogstate Brief Battery …

Supporting Persons With Dementia In Communicating Their Care Preferences, Vanessa L. Burshnic

USF Tampa Graduate Theses and Dissertations

Person-centered care is important to the quality of life of nursing home residents with dementia. Preference assessments enable person-centered care by documenting residents’ preferred activities. Residents with severe dementia are less likely to have a role in preference assessment due to communication challenges associated with the disease. External supports (visual and text cues) are effective in improving the communication of residents with dementia, but these cues are often not used in practice. Standard assessment (verbal questioning) places greater demands on short-term memory and attention, which are known deficits in dementia.

Applying a within-subjects design, this study evaluated two conditions (standard …

No One Wants To Read What You Write: A Contextualized Analysis Of Service Course Assignments, Tanya P. Zarlengo

USF Tampa Graduate Theses and Dissertations

This dissertation takes a systematic approach to answering the question of what services course assignment should accomplish in curricula by looking at the assignment from a contextual perspective that takes into consideration the programmatic factors in which the assignment circulates. The dissertation accomplishes this work by studying curricular artifacts, to include course syllabi and assignment descriptions, as well as textbooks. Additionally, interviews with program administrators and textbook authors are analyzed. The results of this analysis posit a programmatic network that visualizes connections between program, course, and staffing administrative factors with assignments as the nexus of the network. This dissertation illustrates …

Roux-En-Y Gastric Bypass Attenuates Obesity-Related Liver Injury, Drew Alan Rideout

USF Tampa Graduate Theses and Dissertations

Obesity is a growing epidemic in the United States with significant co-morbidities. Non-Alcoholic Fatty Liver Disease (NAFLD) is a prevalent manifestation of obesity that can lead to cirrhosis. Roux-en-Y gastric bypass (RYGB) results in substantial long-term weight loss and resolution of obesity-related metabolic diseases. There appears to be a weight-independent molecular mechanism for the improvement of diabetes mellitus and NAFLD after RYGB, which is poorly understood. Obesity is associated with chronic inflammation that accompanies the hepatic steatosis. Through unknown mechanisms, RYGB in humans increases serum levels of the fat-derived adipocytokine, adiponectin. Adiponectin (an anti-inflammatory cytokine) is known to have a …

An Evaluation Of The Effects Of A Student Trajectory Enhancement Program (Step Up) On High School Performance, Odalys G. Pritchard

USF Tampa Graduate Theses and Dissertations

The Student Trajectory Enhancement Program (STEP UP) was launched in 2014 by Hillsborough County Public Schools (HCPS) as a six-week summer program that targeted over-age, retained, potentially under-achieving students completing the sixth grade. The purpose of this study was to conduct a summative evaluation of the effectiveness of the STEP UP program in keeping program participants “on track” for high school graduation and to determine if the intended goals of the program were realized.

STEP UP was developed in response to compelling data that there is an unacceptably high number of overage students in middle school in HCPS. STEP UP …

Transcriptomics Of Female Golden Tilefish (Lopholatilus Chamaeleonticeps) Collected Aboard Multiple R/V Weatherbird Ii Cruises In The Gulf Of Mexico From 2015-08-15 To 2016-09-09, Steven Murawski, Kristina Deak, Larry Dishaw

C-IMAGE data

This dataset contains transcriptomics of female golden tilefish (Lopholatilus chamaeleonticeps) collected from the Gulf of Mexico aboard R/V Weatherbird II cruises WB-1602, WB-1603 and WB-1701 from 2015-08-15 to 2016-09-09. Transcriptome analysis was performed in fifteen female (by macroscopic gonad evaluation) golden tilefish livers collected during 2015-2016 C-IMAGE demersal longline cruises in the Gulf of Mexico. These fish were caught at three stations, including one impacted by the Deepwater Horizon spill in the northern Gulf, one within the Campeche Bay oil fields, and one offshore the Yucatan peninsula, with no surrounding oil extraction activity. Differential gene expression between stations was evaluated …

A Machine Learning Approach To Predicting Community Engagement On Social Media During Disasters, Adel Alshehri

USF Tampa Graduate Theses and Dissertations

The use of social media is expanding significantly and can serve a variety of purposes. Over the last few years, users of social media have played an increasing role in the dissemination of emergency and disaster information. It is becoming more common for affected populations and other stakeholders to turn to Twitter to gather information about a crisis when decisions need to be made, and action is taken. However, social media platforms, especially on Twitter, presents some drawbacks when it comes to gathering information during disasters. These drawbacks include information overload, messages are written in an informal format, the presence …

Morphodynamics Of Barrier-Inlet Systems In The Context Of Regional Sediment Management, With Case Studies From West-Central Florida, Usa, Tanya Beck, Ping Wang

School of Geosciences Faculty and Staff Publications

The temporal and spatial scales controlling the morphodynamics of barrier-inlet systems are critical components of regional sediment management practice. This paper discusses regional sediment management methods employed at multiple barrier-inlet systems, with case studies from West-Central Florida. A decision-support tool is proposed for regional sediment management with discussion of its application to barrier-inlet systems. Connecting multiple barrier islands and inlets at appropriate spatio-temporal scales is critical in developing an appropriately scoped sediment management plan for a barrier-inlet system. Evaluating sediment bypassing capacity and overall inlet morphodynamics can better inform regional sand sharing along barrier-inlet coastlines; particularly where sediment resources are …

Exploring New Teacher Beliefs: Identity, Home-Life, And Culture In The Classroom, Frederick B. Bradley Iii

USF Tampa Graduate Theses and Dissertations

A persistent shortage of science, technology, engineering, and math (STEM) students, teachers, and professionals is seen by many as a threat to the nation’s global economic standing. Deficits in these areas are often attributed to a lack of quality K-12 STEM education, which is due in large part to a high rate of teacher turnover. Moreover, such teacher attrition has been shown to occur far more often in high-need schools and districts; thus serving to further marginalize disadvantaged members of society.

This study occurs within the context of The Robert Noyce Scholarship Program at our research-intensive university in the southeastern …

“It’S A Broken System That’S Designed To Destroy”: A Critical Narrative Analysis Of Healthcare Providers’ Stories About Race, Reproductive Health, And Policy, Brianna Rae Cusanno

USF Tampa Graduate Theses and Dissertations

Constructions of race, reproductive health, and gender have been inextricably linked in the United States since the beginning of the nation. Today, these linkages remain evident in the marked racial and gender inequities in reproductive health outcomes that persist in the U.S. To better understand how these meanings and material outcomes are negotiated and produced by actors on the ground, this study asked: “How do reproductive healthcare providers (RHPs) communicate about the intersections of race, reproductive health, and policy?” I conducted semi- structures interviews with 24 RHPs, resulting in over 35 hours of recorded interviews. Drawing on critical-cultural communication, Reproductive …

Risk And Resilience Pertaining To Mental Health Of Youth Attending A College In Kathmandu Who Were Exposed To The 2015 Earthquakes During Their Adolescence: A Mixed Method Study, Vinita Sharma

USF Tampa Graduate Theses and Dissertations

Background: Adverse mental health outcomes have been previously reported among survivors of natural disasters. Available studies mostly focus on risk factors and not resilience. In 2015, a series of earthquakes caused massive loss of lives and livelihood in Nepal. Epidemiological data pertaining to youth mental health in Nepal is limited. Information about the post-earthquake mental health of youth who were exposed to earthquakes during their adolescence in Nepal is scarce.

Purpose: The purpose of this study was to address risk and resilience factors related to mental health among college-attending Nepali youth (18-20 years) exposed to the 2015 earthquake during their …

Russian Influence In Latin America: A Response To Nato, Mason Shuya

Journal of Strategic Security

Since facing international backlash from the West over the situation in Ukraine, Russia has had to focus on new international agreements. In retaliation for NATO expansion towards the east, Russia has sought to create these agreements in Latin America. Russia has specifically sought greater ties with Cuba, Nicaragua, Venezuela, Brazil, and Mexico. Currently, these countries maintain close economic ties with the United States. However, new military agreements are giving Russia greater military access to the region and access to locations that would facilitate greater ease in conducting military and espionage operations against the United States.

Linking Sleep And Aggression: The Role Of Response Inhibition And Emotional Processing, Melanie L. Bozzay

USF Tampa Graduate Theses and Dissertations

Although shorter sleep duration is theorized to increase the risk of engaging in aggressive behavior, experimental studies examining this relationship yield conflicting findings. Since sleep serves in part to regulate the functioning of prefrontal brain regions, insufficient sleep may deleteriously impact the individual’s ability to inhibit rash action and alter emotional processing, which could in turn increase aggressive tendencies. However, no studies have examined the extent to which naturally occurring insufficient sleep is linked to aggression or potential mechanisms of this relationship, limiting understanding of and the generalizability of extant findings. Thus, the present study examined whether cognitive (deficits in …

Dating Application Facilitated Victimization: An Examination Of Lifestyle-Routine Activities, Self-Control, And Self-Efficacy, Vanessa Centelles

USF Tampa Graduate Theses and Dissertations

The current study examines how college students participate in the use of location-based real-time dating (LBRTD) applications and the correlates of in-person and cyber victimization. Using an exploratory lens, the present study draws on the classical criminological theories of lifestyle-routine activities (L-RAT), self-efficacy, and low self-control which have been applied to various forms of abuse. Although the use of LBRTD applications has become relatively common place, with approximately 15% of Americans reporting having used a mobile dating application or online dating site, little is known concerning the role these applications play, particularly among college students (Boillot-Fansher, 2017; Smith, 2016). Using …

Plasticity In Animated Children’S Cartoons: The Neoliberal Transforming Bodies And Static Worlds Of Ok Ko And Gumball, Rachel E. Cox

USF Tampa Graduate Theses and Dissertations

Through the study of OK KO! Let’s Be Heroes! and The Amazing World of Gumball, I argue that children’s cartoons represent and recreate anxieties toward money’s plasticity in the plasticity of the cartoon bodies and worlds. I closely examine the ambivalence towards abstraction’s plasticity in contemporary children’s cartoons to trace the neoliberal ambivalence towards money’s plasticity. While much scholarship has grappled with what can be understood as animatic plasticity, very little of it takes on the questions raised about neoliberal culture by televised children’s cartoons. Cartoons are important to study in this respect because their form allows for unbridled plasticity. …

A Decision-Making Framework For Hybrid Resource Recovery Oriented Wastewater Systems, Nader Rezaei

USF Tampa Graduate Theses and Dissertations

Water shortage, water contamination, and the emerging challenges in sustainable water resources management (e.g., the likely impacts of climate change and population growth) necessitate adopting a reverse logistics approach, which is the process of moving wastewater from its typical final destination back to the water supply chain for reuse purposes. This practice not only reduces the negative impacts of wastewater on the environment, but also provides an alternative to withdrawal from natural water resources, forming a closed-loop water supply chain. However, the design of such a supply chain requires an appropriate sustainability assessment, which simultaneously accounts for economic, environmental, and …

Sinkhole Lake Infiltration Of Contaminants Of Emerging Concern From Onsite Water Treatment Systems, Ethan A. Upton

USF Tampa Graduate Theses and Dissertations

The advancement in synthetic chemicals commonly referred to as contaminants of emerging concern (CECs) and their application has led to an increase in environmental pollution. The use of septic tanks otherwise referred to as onsite water treatment systems (OWTS), promotes the introduction of CECs into the environment while allowing little in the way of remediation. In order to study the impacts of CECs from OWTS as they infiltrate the environment and the aquifer system, water, sediment, and vegetation samples were collected around a sinkhole lake surrounded by residential housing using OWTSs. The main question of this research project is what …

Understanding The Implementation Of Integrated Care For People Living With Hiv, Vickie A. Lynn

USF Tampa Graduate Theses and Dissertations

Introduction: The integration of physical and behavioral health services is an innovative method of delivering health care services for persons dual or triply diagnosed with HIV, mental health and/or substance use disorders. Reducing the fragmented delivery of health services by integrating services into one setting is essential to providing holistic patient-centered care and address the complex health needs of this population. Although research shows integrated care improves health outcomes, little is known about the implementation of integrated care in real-world settings because the perspectives and experiences of those delivering and receiving integrated health and social services are underrepresented in the …