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An Analysis Of The Association Between Animal Exposures And The Development Of Type 1 Diabetes In The Teddy Cohort, Callyn Hall

USF Tampa Graduate Theses and Dissertations

Research on exposure to animals and risk of type 1 diabetes (T1D) has had conflicting results with some researchers finding that animal exposure reduces the risk of T1D and others finding no association between animal exposure and T1D. Previously conducted studies on the association between animal exposure and T1D are case-control studies that have been limited by recall bias. The purpose of this study is to investigate the association between early life animal exposure and the risk of persistent, confirmed islet autoantibodies (IA) and T1D diagnosis among an eligible cohort of genetically high T1D risk participants enrolled in the international …

Risk And Hiv-Serodiscordant Couples In Porto Alegre, Brazil: "Normal" Life And The Semantic Quarantine, Shana Hughes

USF Tampa Graduate Theses and Dissertations

The objective of this research was to develop a holistic understanding of how risk, especially the risk of HIV transmission, is constructed and negotiated in the daily lives of a group of heterosexual, HIV-serodiscordant couples in Porto Alegre, Brazil. Couples serodiscordant for HIV are those in which one partner is infected and the other is not. Data were gathered through participant observation and semi-structured interviews with serodiscordant couples, as well as key informants in HIV/AIDS-related civil society, government, and biomedical practitioners in Porto Alegre. Interviews were recorded and transcribed and relevant study materials were coded and subjected to thematic and …

Evaluation Of Four Portable Cooling Vests For Workers Wearing Gas Extraction Coveralls In Hot Environments, Joseph Kevin Johnson

USF Tampa Graduate Theses and Dissertations

Excessive exposure to heat stress can cause a host of heat-related illnesses. For laborers, job specific work demands and protective garments greatly increase the risk of succumbing to the effects of heat stress. Microclimate cooling has been used to control heat stress exposure where administrative or engineering controls are not adequate. This study tested the performance of four personal cooling vests for use with insulated protective clothing (gas extraction coveralls) in warm-humid (35 ° C, 50% relative humidity) and hot-dry (40°C, 30% relative humidity) conditions. On 10 separate occasions, 5 male volunteers walked on a treadmill to elicit a target …

The Effects Of Caloric Preload And Dietary Restraint On Smoking And Eating Behavior, Michelle Kovacs

USF Tampa Graduate Theses and Dissertations

Abstract

Rates of smoking are elevated in eating-disordered populations, especially among females (Pomerleau & Snedecor, 2008; Klesges & Klesges, 1988). Restrained eaters ignore physiological cues of satiation and hunger, and instead attempt to employ cognitive control over decisions to eat. Additionally, they are prone to eat in a disinhibited manner after a salient emotional or food cue interrupts their restraint. This eating style is also associated with increased rates of smoking compared with the general population. Although there is a great deal of literature on the relationship between smoking and eating, the role of eating in momentary decisions regarding smoking …

Effect Of Solids Retention Time On The Denitrification Potential Of Anaerobically Digested Swine Waste, Maureen Njoki Kinyua

USF Tampa Graduate Theses and Dissertations

Three continuously stirred tank reactors (CSTR) were operated in semi continuous mode treating swine waste using anaerobic digestion. The reactors were used to test the effect of solid retention time (SRT) on CH4 yield, total ammonia nitrogen (TAN) concentrations, % volatile solids (VS), chemical oxygen demand (COD) and volatile fatty acids (VFA) removal, readily biodegradable COD concentration and the denitrification potential for the effluent in a biological nutrient removal (BNR) system. During Phase I of the study, the three reactors were operated at the same 28 day SRT for 16 weeks. SRTs were then changed during the 12 week Phase …

Associations Of Perceived Stress, Sleep, And Human Papillomavirus In A Prospective Cohort Of Men, Stephanie Kay Kolar

USF Tampa Graduate Theses and Dissertations

Introduction: Mucosal human papillomavirus (HPV) infection is the most common sexually transmitted infection (STI) and is associated with genitals warts, anogenital cancers, and oropharyngeal cancers. Most sexually active persons will become infected with HPV at some point in their lives, however few will develop HPV-related diseases such as warts, lesions, or cancer as a result of the infection. It is unclear why a minority of individuals fail to clear HPV infection and develop clinical disease. Due to initial associations with cervical lesions, much research has focused on women. Th1 type immune responses have been associated with successful response to HPV …

Perceptual Responses To High-Intensity Interval Training In Overweight And Sedentary Individuals, Nicholas Martinez

USF Tampa Graduate Theses and Dissertations

Contemporary aerobic exercise guidelines comprised of continuous durations and higher intensities have been shown to be effective in the prevention and treatment of risk factors associated with obesity and cardiovascular disease (CVD). However, high-intensity interval training (HIIT) has recently been examined as an advantageous protocol for producing more favorable physiological and psychological benefits in comparison to traditional continuous exercise guidelines. The dual-mode model, which examines the dose response relationship between exercise intensity and affective valence, would suggest that exercise performed well above the ventilatory threshold (VT) in the severe domain should result in negative affective valence.

Numerous investigations have confirmed …

Sickle Cell Disease: The Role Of Self-Care Management, Nadine Matthie

USF Tampa Graduate Theses and Dissertations

Abstract

Sickle cell disease is the most common genetic disorder in the United States. Approximately 90% of the hospitalizations in this patient population occur due to the most common complication, pain crises. Prevention of these crises is therefore essential and requires the patient to assume an active role in his or her disease management. Studies suggest that further research is needed to examine the self-care management process and to identify factors influencing self-care behaviors. The relationships among these factors must be clearly defined before interventions to improve self-care management can be determined. The aims of the study were threefold. The …

Parent Pathways: Recognition And Responses To Developmental Delays In Young Children, Jennifer Marshall

USF Tampa Graduate Theses and Dissertations

The importance of early recognition and intervention for developmental delays is increasingly acknowledged, yet high rates of under-enrollment and 1-3 year delays in entry to the public early intervention system continue. Much research has examined developmental screening in health and child care settings, but less well understood is what prompts parents to identify problems and seek help for their children. This mixed methods study rooted in the Health Belief Model and Social Support Theory examined child, parent, family, and community level factors related to parent recognition (awareness and concern) and response (help-seeking and enrollment in services), including formal and informal …

Practices And Factors Influencing Sharps Use And Safety In A Suburban Fire Department And Among Emergency Medical Services Personnel, Christine Michelle Mcguire-Wolfe

USF Tampa Graduate Theses and Dissertations

Needlestick injuries (NSIs) are a recognized risk for occupationally-related transmission of bloodborne pathogens (BBP). The occurrence of NSIs and BBP exposures among firefighters (FFs) and emergency medical services (EMS) personnel has been documented.

The purposes of this study were: 1) to define the problem of NSI among FFs and EMS personnel in a suburban fire department (FD) and identify practices and factors that influence sharps use and safety; 2) design and implement and intervention to promote safer sharps device usage; and 3) to measure the effectiveness of the intervention among FFs and EMS personnel.

A multi-phase, mixed methods approach was …

Eschatology In A Secular Age: An Examination Of The Use Of Eschatology In The Philosophies Of Heidegger, Berdyaev And Blumenberg, John R. Lup, Jr.

USF Tampa Graduate Theses and Dissertations

The topic of eschatology is generally confined to the field of theology. However, the subject has influenced many other fields, such as politics and history. This dissertation examines the question why eschatology remained a topic of discussion within twentieth century philosophy. Concepts associated with eschatology, such as the end of time and the hope of a utopian age to come, remained largely background assumptions among intellectuals in the modern age. Martin Heidegger, Nicolai Berdyaev, and Hans Blumenberg, however, explicitly addressed the subject in their philosophies. The impetus of this study is Heidegger's statement, "Being itself is inherently eschatological," which indicates …

Brain Electrophysiological Correlates Of Masked Picture Priming In Fluent And Stuttering Adults, Kalie B. Morris

USF Tampa Graduate Theses and Dissertations

Abstract

Objective: The aim of the present study was to investigate mechanisms of real-time language production of adults who stutter.

Method: Data were analyzed for 19 typically fluent young adults (TFA) and 19 young adults who stutter (AWS). Participants performed a masked picture priming task where priming stimuli consisted of two conditions 1) Identity- a masked printed prime word identical to the picture target label, and 2) Unrelated- a masked printed prime word unrelated to the picture target label. Brain event-related potentials (ERPs), time-locked to pictures eliciting spontaneous naming, were recorded, as well as naming accuracy and reaction times.

Results: …

A Child Distracted: Understanding The Relationship Between Pediatric Obsessive-Compulsive Disorder And Subjective Well-Being, Joshua M. Nadeau

USF Tampa Graduate Theses and Dissertations

Obsessive Compulsive Disorder (OCD) is a commonly diagnosed mental health condition among children and adolescents, with studies suggesting that OCD has the potential for significant disruption of academic and social performance. Subjective well-being (SWB) represents a non-traditional conceptualization of mental health within the dual factor model, wherein SWB and measures of psychopathology (e.g., problematic levels of internalizing and externalizing behaviors) provide a more comprehensive picture of mental wellness. The current study examined the nature of the relationship between clinical characteristics of pediatric OCD and SWB within school-age youth (N=65) seeking treatment from an outpatient pediatric neuropsychiatric clinic. Additionally, the potential …

Pharmacological Versus Social Alcohol Expectancies: Making An Important Distinction Between The Anticipated Rewarding Effects Of Alcohol, Megan Victoria Mcmurray

USF Tampa Graduate Theses and Dissertations

Despite over 30 years of research investigating alcohol expectancies, they have never been examined in terms of the anticipated pharmacological versus social rewards resulting from alcohol consumption, and both appear to play a central role in drinking motivation and behavior. The purpose of this study was to develop a two-dimensional instrument designed to assess both the pharmacological alcohol expectancies of pleasurable, internal states that result from alcohol consumption, as well as the social expectancies that drinking alcohol will result in higher social status and increased effectiveness in social situations. This measure, called the Pharmacological and Social Alcohol Expectancy Scale (PSAES), …

Framing Colombian Women's Beliefs, Values And Attitude Towards Sex And Sexual High-Risk Behaviors, Rosa Ore

USF Tampa Graduate Theses and Dissertations

Hispanic immigrants constitute the largest and fastest growing groups of minorities in the United States. According to the 2010 Census, there are 50.5 million Hispanics in the United States, making up 16.3% of the total population (Passel, Cohn & Lopez, 2011). Furthermore, the state of Florida is home to 4,223,806 Hispanics (U.S. Census Bureau, 2010). Because the Hispanic population continues to grow, it is important to study their sexual health behaviors because diseases linked to risky sexual behaviors account for approximately 20,000 U.S. deaths each year, and are linked to a number of adverse reproductive outcomes (Abraido-Lanza, Chao, & Florez, …

Development Of Novel Nano-Composite Membranes As Introduction Systems For Mass Spectrometers: Contrasting Nano-Composite Membranes And Conventional Inlet Systems, Luis Miranda

USF Tampa Graduate Theses and Dissertations

This dissertation presents the development of novel nano-composite membranes as introduction systems for mass spectrometers. These nano-composite membranes incorporate anodic aluminum oxide (AAO) membranes as templates that can be used by themselves or modified by a variety of chemical deposition processes. Two types of nano-composite membranes are presented. The first nano-composite membrane has carbon deposited within the pores of an AAO membrane. The second nano-composite membrane is made by coating an AAO membrane with a thin polymer film. The following chapters describe the transmission properties these nano-composite membranes and compare them to conventional mass spectrometry introduction systems. The nano- composite …

Reliability Assessment Of Ion Contamination Residues On Printed Circuit Board, Minh Tam Tran Nguyen

USF Tampa Graduate Theses and Dissertations

Ion contaminants from Printed Circuit Board (PCB) assembly processes pose a high reliability risk because they result in damaged circuits. Therefore, it is essential to understand the level of ionic species on the electronic circuitry as well as the reliability risks caused by these contaminants. There are a number of approaches available in the industry to assess the reliability risks ; for example, the water drop test (WDT) is one of the techniques used to determine the propensity of an ionic contaminant to cause electrical short failures by dendrite formation. The objective of this research is to determine the time …

Dynamic Processes In Network Goods: Modeling, Analysis And Applications, Arnut Paothong

USF Tampa Graduate Theses and Dissertations

The network externality function plays a very important role in the study of economic network industries. Moreover, the consumer group dynamic interactions coupled with network externality concept is going to play a dominant role in the network goods in the 21st century. The existing literature is stemmed on a choice of externality function with certain quantitative properties. The utility function coupled with the network externality function is used to investigate static properties of rational equilibrium. The aim of this work is to systematically initiate a development of quantitative effects of the concept of network externality and its influence on the …

The Perspectives Of Graduate Students With Visual Disabilities: A Heuristic Case Study, Luis Perez

USF Tampa Graduate Theses and Dissertations

The concept of liminality describes the experiences of individuals who live "between and betwixt" as a result of their indeterminate status in society. This concept seems appropriate to describe the experiences of people who live with vision loss, because we simultaneously belong to two social or cultural groups. On the one hand we must navigate the mainstream society in which we live day to day, which we are often able to do with the vision we have left. On the other hand, our disability sets us apart from that mainstream society. This idea of living in "between and betwixt" the …

Mapping Dissertation Genre Ecology, Kate Lisbeth Pantelides

USF Tampa Graduate Theses and Dissertations

Though the pervasive rumor that the “traditional” dissertation persists because of the “I suffered, so they too should suffer” mentality — the professor revenge theory — students are often the ones eager to pin down writing genres so that they can master them. However, hopes to stabilize and thus capture the secret or equation of the dissertation genre are futile, since genres, like language, are alive: rhetorical, evolving, and flexible. Thus, to demonstrate the contemporary context of the dissertation genre, the conflicting perspectives of university stakeholders, the forces working on the genre to enact change, and the process by which …

Analytical Modeling, Perturbation Analysis And Experimental Characterization Of Guided Surface Acoustic Wave Sensors, Onursal Onen

USF Tampa Graduate Theses and Dissertations

In this dissertation, guided surface acoustic wave sensors were investigated theoretically and experimentally in detail for immunosensing applications. Shear horizontal polarized guided surface acoustic wave propagation for mass loading sensing applications was modeled using analytical modeling and characterized by perturbation analysis. The model verification was performed experimentally and a surface acoustic wave immunosensor case study was presented. The results of the immunosensing were also investigated using the perturbation analysis.

Guided surface acoustic wave propagation problem was investigated in detail for gravimetric (or mass loading) guided wave sensors, more specifically for immunosensors. The analytical model was developed for multilayer systems taking …

Preparing For The Next Generation Of Senior Population: An Analysis Of Changes In Senior Travel Behavior Over The Last Two Decades, Joseph Nicholas Samus

USF Tampa Graduate Theses and Dissertations

Over the past several decades, the senior age group has become the fastest growing segment of the population in the United States (Warner, 2011). This study seeks to contribute to the ongoing discussion of the impacts that the increases in senior travel will have on the future transportation systems and planning efforts. The main objective of this research is to conduct an explorative analysis of the changes in senior travel behavior over the past two decades and discuss the implications of these changes to transportation planning in the future. This thesis seeks to further understanding of this topic by providing …

Do Mathematics And Reading Competencies Integrated Into Career And Technical Education Courses Improve High School Student State Assessment Scores, Kristin Bowles Pierce

USF Tampa Graduate Theses and Dissertations

A quasi experimental study tested a contextual teaching and learning (CTL) model for integrating reading and mathematics competencies through 13 introductory Career and Technical Education (CTE) courses. Volunteer CTE Lead Teachers with assistance from academic teachers, developed integrated units. The purpose of this study was to determine whether students who participated in CTE courses that integrated core mathematics and reading standards performed better on a test of mathematics and reading skills compared to students who participated in traditional, non-integrated courses. The treatment group consisted of students in the 13 introductory courses taught by the CTE Lead Teachers and the control …

The Development And Validation Of The Physical Appearance Comparison Scale-Revised (Pacs-R), Lauren M. Schaefer

USF Tampa Graduate Theses and Dissertations

The Physical Appearance Comparison Scale (PACS; Thompson, Heinberg, & Tantleff, 1991) is a widely used 5-item measure that assesses an overall tendency to compare one's own appearance to the appearance of others in social situations. Research using the PACS and other measures of appearance comparison has shown this construct to be related to higher levels of body dissatisfaction and eating pathology. However, the measure is limited in that it only assesses comparison tendencies within a narrow range of social contexts and body sites. In the current investigation, the PACS was revised to examine a broader range of social contexts (e.g., …

The Baby Blues: Mothers' Experiences After Adoption, Brigette Barno Schupay

USF Tampa Graduate Theses and Dissertations

ABSTRACT

It is not uncommon for new mothers to experience depression. However, depression after the arrival of a child is not limited to biological mothers. The term Post-Adoption Depression Syndrome (PADS) was created to capture the unique type of depression that may occur after adopting a child. The nature and prevalence of depression after adoption is still largely unknown since there is little published research exploring the experiences of mothers in the first year after adopting a child. The characteristics of this disorder are reportedly comparable to postpartum depression in a biological mother. A review of postpartum literature reveals risk …

High School Students In College-Level Classes: Associations Between Engagement, Achievement, And Mental Health, Rachel Anne Roth

USF Tampa Graduate Theses and Dissertations

Student engagement is a multifaceted construct gaining increased interest within the fields of psychology and education. Current literature suggests that student engagement is linked to important student outcomes including academic achievement, psychopathology, and mental wellness; however, there is a dearth of studies that have examined all components of student engagement simultaneously as they relate to the aforementioned outcomes. Additionally, past literature has found support for a decreasing trend in student engagement across the school years, but less attention has been paid to student engagement in the high school years. Among high school students, a particular subgroup has been virtually ignored: …

Blending Work And School: Positives And Negatives Of The Interface, Neha Singla

USF Tampa Graduate Theses and Dissertations

This study draws from the extensive research on work and family, and examined a model of the antecedents and outcomes of work-school conflict and work-school facilitation. As an extension of previous research on the work-school interface, the purpose of this study is two-fold. First, this study aimed to examine the impact of conflict and facilitation on personal health. Second, the study set out to investigate the role of emotional support from friends and family, and self-efficacy as moderators. Data were obtained from 329 full-time students who were also employed part-time. The model was tested using structural equation modeling techniques. One …

Utilizing Habit Reversal And Contingency Contracting To Impact Eating Habits With Obese Individuals, Christopher Thomas Scull

USF Tampa Graduate Theses and Dissertations

One of the most difficult set of behaviors for individuals to engage in is weight management. The United States boasts an astonishing 35% obesity rate in adults while children show almost a 20% obesity rate. These statistics identify the importance of developing effective methods to help change an individual's eating habits. There are many eating habits that may contribute to an individual gaining or losing weight over a period of time. Simplified habit reversal (SHR) has an impressive history in shaping desirable responses to compete with many different types of habitual behaviors. The present study extended the SHR procedure to …

Direct And Indirect Effects Of Agrochemicals On Bacterial Pathogens And Fecal Indicator Bacteria, Zachery Staley

USF Tampa Graduate Theses and Dissertations

The presence of agrochemical residues in both urban and agricultural water bodies has become ubiquitous, often producing deleterious effects in the impacted watershed including reductions in biodiversity, alterations in species interactions, and toxicity to non-target organisms. While these effects have been studied on metazoan consumers, the consequences of agrochemical contamination on microorganisms, such as bacteria, protozoa, and viruses, are poorly understood. Agrochemicals could act directly on microorganisms, including pathogens, by either facilitating their survival or decreasing their abundance. Further, a multitude of indirect effects of agrochemicals on microorganisms are possible, whereby agrochemicals alter predation, competition, or parasitism on or available …

Efforts To Engage Parents And Case Outcomes In The Child Welfare System, Patty Sharrock

USF Tampa Graduate Theses and Dissertations

The vast majority of child maltreatment in the United States is perpetrated by parents and over half of maltreated children placed in out-of-home care are reunified with the parents from which they were removed. Additional victimization of these children sometimes necessitates their reentry into out-of-home care. These realities emphasize the need to engage parents in assessment, planning, and services throughout the life of a child welfare case. Engagement is a key ingredient in social work practice and is widely accepted in the child protection arena as critical to successful service planning and participation. However, little research has focused on the …