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Modeling The Advantages And Disadvantages Of The Coral-Algal Symbiosis, Dana Joy Gaydos

USF Tampa Graduate Theses and Dissertations

Coral reefs thrive in nutrient-deficient environments yet function among the most productive ecosystems on Earth as a consequence of the symbiosis between coral hosts and their symbiotic zooxanthellae. The symbiotic unit (holobiont) can utilize both inorganic and organic sources of nutrients for the accumulation of carbon and nitrogen required for metabolism, growth, and reproduction. An iterative model was created to describe the flux of carbon and nitrogen between a host and its algae. The model design is based on a previously published conceptual model of algal symbioses; functions and values of input parameters are based on published studies of the …

A Feminist Perspective On The Precautionary Principle And The Problem Of Endocrine Disruptors Under Neoliberal Globalization Policies, Erica Hesch Anstey

USF Tampa Graduate Theses and Dissertations

Industrialization and "development" during the last 200 years have led to an increase of pesticides, an intensified use of synthetic chemicals, higher levels of environmental pollution, and more exposure to hazardous working conditions. Environmental toxins, many of which are endocrine disruptors, are stored in fat tissue, increasing reproductive health risks for both women and men. Women’s bodies are particularly vulnerable as sites for creating, growing, feeding, and nurturing the next generation. And yet, women’s lives are consistently devalued, especially in a capitalist economy, so that a woman’s rights to her own reproductive health are no longer guaranteed.

In this thesis …

Assessment Of Image Analysis As A Measure Of Scleractinian Coral Growth, Steven K. Gustafson

USF Tampa Graduate Theses and Dissertations

Image analysis was used to measure basal areas of selected colonies of Montastraea annularis and Porites astreoides, following the colonies over a three-year period from 2002 to 2004. Existing digital images of permanently-marked quadrats in the Caye Caulker Marine Reserve, Belize, were selected based on image quality and availability of images of selected quadrats for all three years. Annual growth rates were calculated from the basal-area measurements. Mean growth rates (radial skeletal extension) for M. annularis and P. astreoides were 0.02 cm yr-1 and -0.20 cm yr-1, respectively. Basal area measurements demonstrated a large degree of variability. Increases were approximately …

Blood Lead Concentrations In The Cat Population Of Tampa, Florida, Liesl M. Wiesen

USF Tampa Graduate Theses and Dissertations

Where lead pollutes urban soils, both human and animals risk exposure. This exposure gives rise to similar health risks across species. A group of 50 outdoor living cats from inner city Tampa, Florida were tested for blood lead concentration (BLC). Most cats had no measurable lead loads, 14 percent had levels less than or equal to 6 micrograms per decaliter. Soil samples were taken from the home location of each cat. None of these samples, which ranged from 2.6 microgram per gram to 170 micrograms per gram, had hazardous levels of lead. Overall, BLCs were lower than expected. In addition, …

Freedom Fighters, Freedom Haters, Martyrs, And Evildoers: The Social Construction Of Suicide Terrorism, Cã©Cile Valã©Rie Van De Voorde

USF Tampa Graduate Theses and Dissertations

Suicide terrorism is characterized by the willingness of physically and psychologically war-trained individuals to die while destroying or attempting to annihilate enemy targets in furtherance of certain political or social objectives. Rooted in the historical, social, and psychological dimensions of international terrorism, suicide terrorism is neither a unique nor a new phenomenon. Its recent resurgence and the extensive media coverage it has received account for the misleading uniqueness of this violent, complex, and adaptive form of terrorism. This qualitative study examines the definitional and rhetorical processes by which suicide terrorism is socially constructed. Using a social constructionist theoretical framework coupled …

Be Active!: An Examination Of Social Support's Role In Individual Vs. Team Competition In Worksite Health Promotion, Lauren Kriz

USF Tampa Graduate Theses and Dissertations

Millions of dollars are being spent on health care claims. To try and reduce these claims, corporations are implementing worksite health promotion programs. Some success has been associated with these programs. Many programs implement different types of incentives and competitions. Some incentives and competitions are based on individual participation while others are based on team participation. The purpose of the study was to determine the role social support plays in individual and team health promotion programs and discover if social support was the key factor for the differences in such programs. All participants of the study were responsible for keeping …

Laboratory Analysis Of Staphylococcus Aureus In Florida From January 1, 2003 To December 31, 2005 With An Emphasis On Methicillin Resistance, Stephanie Kolar

USF Tampa Graduate Theses and Dissertations

The Staphylococci are gram-positive bacteria that cause infections in humans and can produce severe morbidity and mortality. Methicillin resistant S. aureus (MRSA) isolates are resistant to all beta-lactam antibiotics, such as methicillin, and cephalosporins making treatment of these infections more difficult. MRSA has become prevalent throughout the United States, spreading in the health care setting and the community.The purpose of this study is to examine methicillin resistance among S. aureus isolates in an outpatient population in the state of Florida and asses possible associations between methicillin resistance and age group, gender, and geographic area. It is important to define methicillin …

Occupancy And Function Of The Hepatic Hmg-Coa Reductase Promoter, William Raymond Lagor

USF Tampa Graduate Theses and Dissertations

HMG-CoA reductase (HMGR) catalyzes the rate controlling step in cholesterol production. This enzyme is highly expressed in the liver where it is subject to extensive hormonal and dietary regulation. This study was undertaken to examine the occupancy and function of the hepatic HMGR promoter in regards to insulin and sterol regulation. HMGR protein and mRNA are substantially decreased in diabetic animals and rapidly restored by administration of insulin. Nuclear run-on assays revealed that HMGR transcription was substantially reduced in the diabetic rats, and fully restored within two hours after insulin treatment. In vivo footprinting revealed several areas of protein binding …

Electrically Charged Sol-Gel Coatings For On-Line Preconcentration And Analysis Of Zwitterionic Biomolecules By Capillary Electrophoresis, Wen Li

USF Tampa Graduate Theses and Dissertations

Novel on-line methods are presented for the extraction, preconcentration and analysis of zwitterionic biomolecules using sol-gel-coated columns coupled to a conventional UV/visible detector. The presented approaches do not require any additional modification of the commercially available standard CE instrument. Extraction, stacking, and focusing techniques were used in the preconcentration procedures. The positively charged sol-gel coatings were created using N-octadecyldimethyl[3-(trimethoxysilyl) proply]ammonium chloride (C18-TMS) in the coating sol solutions. Due to the presence of a positively charged quaternary ammonium moiety in C18-TMS, the resulting sol-gel coating carried a positive charge. The negatively charged sol-gel coatings were due to the presence of sulfonate …

Breathing Easier: Ethnographic Study Of Acute Respiratory Infection In Children In Rural Ecuador, John S. Luque

USF Tampa Graduate Theses and Dissertations

This dissertation research utilizes anthropological methods to determine the degree to which the signs and symptoms female caregivers identify as causes of acute respiratory infections (ARIs) in under-fives in rural Ecuador correspond with Western biomedical categories. By employing both a semi-structured medical history questionnaire and more open-ended ethnographic methods such as in-depth informant interviews and focus group research, the researcher identifies the factors which determine timely health care-seeking behaviors of female caregivers in this case study. Economic factors such as the cost of medications and lost work hours were determined to be the primary financial obstacles for timely health care-seeking. …

The Role Of The Home Literacy Environment In The Development Of Early Literacy Skills And School Readiness In Kindergarten Children From Low Socioeconomic And Minority Families, Nicole R. Martin

USF Tampa Graduate Theses and Dissertations

The present study investigated the relationship between two predictor variables and children's Dynamic Indicators of Basic Literacy Initial Sound Fluency (ISF) and Letter Naming Fluency (LNF) scores, as well as Early Screening Inventory-Kindergarten (ESI-K) scores. The two predictor variables were 1) parents' perception of their home literacy environment, and 2) parental beliefs about the importance of literacy (race had to be dropped out of the study due to the limited amount of participants per race variable). The participants were 68 kindergarten students and their parents from two schools in a school district in West Central Florida. Results showed that the …

The Effects Of American Diabetes Association (Ada) Diabetes Self-Management Education And Continuous Glucose Monitoring On Diabetes Health Beliefs, Behaviors And Metabolic Control, Jodee Meisenhelder-Smith

USF Tampa Graduate Theses and Dissertations

The purpose of this study was to determine whether adults with type 2 diabetes participating in American Diabetes Association (ADA) diabetes self-management education (DSME) randomly assigned to an intensive follow-up group (IFG), utilizing continuous glucose monitoring system (CGMS), or a standard follow-up group (SFG) have any significant differences in mean HgbA1c values and health belief scores over time. Baseline HgbA1c values and health beliefs were measured using the revised Expanded Health Belief Model (HBM) questionnaire. The questionnaire measured the 8 HBM domains: perceived susceptibility; severity; treatment benefit; cues to action; motivation; barriers; self-efficacy and structural elements. Twelve weeks after DSME, …

Group Fission-Fusion Dynamics And Communication In The Bottlenose Dolphin (Tursiops Truncatus), Ester Quintana-Rizzo

USF Tampa Graduate Theses and Dissertations

The bottlenose dolphin exhibits a fission-fusion social structure characterized by temporary associations lasting from minutes to hours. Although social structure has been described for some dolphin communities, the selective pressures affecting fission-fusion patterns and their consequences on dolphin communication are not well understood. The goals of the present study were three-fold: 1) to quantify the rate with which fission-fusion occurred and identify the selective pressures influencing an individual's decision to leave and join a temporary group; 2) to examine the communication signals produced during temporary separations; and 3) to estimate the distances over which dolphins could remain in acoustic contact …

Educational Backgrounds And Teaching Styles Of Athletic Training Educators In Entry-Level Caahep Accredited Athletic Training Programs Valerie J. Rich, Valerie J. Rich

USF Tampa Graduate Theses and Dissertations

The purpose of this study was to describe the educational backgrounds and teaching styles of athletic training educators and to see if a relationship existed between educational backgrounds and teaching styles. An electronic survey was e-mailed to 338 Program Directors of CAAHEP accredited undergraduate and graduate athletic training education programs. The survey was also posted on the athletic training educator's listserv to recruit more participants. The survey contained questions regarding demographics and educational history, as well as the Teaching Styles Inventory (Grasha, 2002). A total of 198 athletic training educators responded to the survey, and 174 filled out the survey …

Correlates Of Weight In Adolescents: A Path Analysis, Angela T. Sheble

USF Tampa Graduate Theses and Dissertations

This study examined the interrelationships between adolescent weight and several other variables thought to impact weight and obesity: physical activity, depressive symptoms, binge-eating symptoms, dieting, socio-economic status, special education status, gender, and ethnicity. The sample consisted of 251 high school students in rural Florida who completed measures of depression, binge-eating, dieting, and physical activity. Measurement instruments included the Reynolds Adolescent Depression Scale-2nd Edition (RADS-2), the bulimia scale of the Eating Disorder Inventory-2 (EDI-2), the dieting scale of the Dutch Eating Behavior Questionnaire (DEBQ), and a physical activity questionnaire derived from the Youth Risk Behavior Scale for Students (YRBSS). The study …

Maternal Interaction Style, Reported Experiences Of Care, And Pediatric Health Care Utilization, Wendy Lauran Struchen Shellhorn

USF Tampa Graduate Theses and Dissertations

U.S. immunization and well child-care rates are below desired levels with lower income individuals being at higher risk for receiving inadequate care. To enhance the understanding of motivating factors to health care utilization, this study explored relationships between a mother's interaction style (secure, anxious, avoidant), her reported experiences with pediatric health care and her child's utilization of pediatric health care. Participants included 126 US-born, English-speaking women with an infant 12 to18 months of age. Linear regression analyses found no bivariate associations between maternal interaction style and reported experiences of care. Poisson regression analyses measured associations of maternal interaction style, reported …

Advanced Registered Nurse Practitioners’ Judgments Of Coronary Heart Disease Risk, Kelly D. Stamp

USF Tampa Graduate Theses and Dissertations

Coronary heart disease (CHD) is the single largest killer of American males and females in the United States. According to the American Heart Association, (2005) approximately 41% of Americans that experience a coronary attack in a given year will die from it (AHA, 2005). To combat this growing problem, strategies need to be evaluated to assess how the identification of actual and potential CHD risks are made. This study utilized the Social Judgment Theory to gain insight into nurse practitioner's decision-making strategies. Sixty family or adult specialty nurse practitioners affiliated with the University of South Florida (USF) College of Nursing …

An Investigation Of The Relationship Between Religiosity And Subjective Well-Being In Older Adults: The Mediating Role Of Optimism, Teri A. Trede

USF Tampa Graduate Theses and Dissertations

The proportion of adults aged 65 and older in the United States has been increasing steadily for years. Although most would agree that this increased longevity is a remarkable achievement, there is growing concern regarding the resources that will be necessary to provide care and services for this rapidly expanding segment of the population. From a public health perspective, simply increasing longevity is no longer the ultimate outcome sought. A more pertinent goal is increasing the quality of life years, or promoting resilience and successful aging. Strategies that assist adults in delaying the onset of disability or reducing the severity …

Arts In New Directions The Development And Application Of A Construct That Uses The Arts To Promote Transformation And Self-Actualization In Health Care And Education/Therapy, Alexxis Avalon

USF Tampa Graduate Theses and Dissertations

Artistic methods to evoke relaxation, spark creativity, and change self-perceptions are already being used by therapists, educators, and scientists. Interdisciplinary collaborations among researchers are developing to create new paradigms that incorporate the use of arts to empower individuals. By describing various connections between the arts and participants, researchers are looking at the expressive arts (including dance, music, drama, poetry, and visual arts) for transformation and self-actualization.The problem is that no construct is available to describe the transformation, "the conscious move from one deep structure of knowledge to another" (Wilber, 2004), that occurs when using the arts in health care and …

Cloning And Analysis Of Putative Collagenases Of The U32 Family In Streptococcus Mutans And Streptococcus Agalactiae (Group B Streptococci), Valerie Carson

USF Tampa Graduate Theses and Dissertations

Analysis of the genomic sequences of Streptococcus mutans UA159 and Group B Streptococcus (GBS) strains Streptococcus agalactiae NEM316 and S. agalactiae 2603V/R indicated the presence of two putative collagenase genes in each organism. smcol1 from S. mutans was previously cloned and analyzed and the results indicated that the enzyme belonged to the U32 family of collagenases/peptidases. This enzyme shares homology with the prtC of Porphyromonas gingivalis, one of the principal examples of the U32 family of peptidases. Considering the potential role of these enzymes in the pathogenicity of P. gingivalis (periodontitis or gum disease), GBS (premature rupture of the amniochorionic …

The Association Of Head Circumference With Selected Cognitive Outcomes In Older Adults In Charlotte County, Florida, Cathleen Copenhaver

USF Tampa Graduate Theses and Dissertations

OBJECTIVE: The brain reserve hypothesis was examined in a secondary analysis of cross-sectional data from a community-based sample of 468 older adults residing in Charlotte County, Florida. The objective of the analysis was to determine the association between head circumference and eight cognitive outcomes and to assess any potential effect modification of existing associations by Apolipoprotein E (APOE) genotype. METHODS: Cognitive outcomes include scores from the Modified Mini-Mental State Exam (3MS), the Hopkins Verbal Learning Test-Revised (HVLT-R), Stroop Color-Word Test, Trail-Making Test A and B, and a word-stem completion task measuring implicit memory. Descriptive statistics were calculated for each variable. …

Herbivory By Leaf Miners On Florida Scrub Oaks, Tatiana Cornelissen

USF Tampa Graduate Theses and Dissertations

This study investigated effects of plant quality and natural enemies on the abundance and survivorship of several leaf miner species on Florida scrub oaks over several ecological scales. Three oak species (Quercus laevis, Q. geminata, and Q. myrtifolia) and four leafminer species (Acrocercops albinatella, Brachys tesselatus, Stilbosis quadripustulatus, and Cameraria sp. nova) were the main focus of five separate studies, addressing effects of bottom-up and top-down factors at regional, local, and individual scales. At the regional scale, it was observed that Cameraria sp. nova was aggregated into sites, and sites closer to …

Rapid Detection Of Mycobacterium Tuberculosis In Lung Tissue Using A Fiber Optic Biosensor, Kimberly A. Denton

USF Tampa Graduate Theses and Dissertations

There is no rapid diagnostic technique at medical examiners' offices to determine if a decedent is infected with Mycobacterium tuberculosis. Present diagnostic testing requires at least one month for results. A biosensor-based sandwich immunoassay for the detection of M. tuberculosis was developed in this study. M. tuberculosis polyclonal antibody was used for target antigen capture and detection in the immunoassay. Live attenuated M. tuberculosis (ATCC 25177) suspended in phosphate-buffered saline with 0.1% Tween 20 was used as the antigen in the detection assay. The Analyte 2000 was the initial biosensor platform. Initial testing was of Freund's adjuvant complete. M. tuberculosis …

Functional Topology And Regulation Of Endothelial Nitric Oxide Synthase And Associated Caveolar Components, Brenda R. Flam

USF Tampa Graduate Theses and Dissertations

The discovery of nitric oxide (NO) as the endothelial-derived relaxing factor has led to significant research on NO and the proteins involved in its function, generation, location and regulation. Synthesis of NO by blood vessel endothelial cells results from the enzymatic oxidation of arginine by endothelial nitric oxide synthase (eNOS) resulting in the formation of equimolar amounts of NO and citrulline. Citrulline is sequentially recycled to arginine by successive reactions involving the enzymes argininosuccinate synthase (AS) and argininosuccinate lyase (AL), respectively.

eNOS activity has been shown to be regulated by post-translational modifications including dynamic phosphorylation on multiple serine/threonine and tyrosine …

Confronting College: Foster Care Youth Deciding Whether To Participate In Higher Education Programs, Linda K. Herlocker

USF Tampa Graduate Theses and Dissertations

This study's purpose was to explore the college choice process for foster care youth who are aging out of Florida's protective services system. The research methodology included three components. First, a survey of the Independent Living Coordinators throughout the state of Florida solicited data regarding participation rates and enrollment patterns among foster care youth. Next, in a meeting setting, a survey was administered to foster care youth, probing the extent to which they considered certain college choice decision factors. Finally, upon completion of the survey, participants remained for a guided focus group discussion to further explore their decision criteria.The results …

Brain-Compatible Research: Using Brain-Based Techniques To Positively Impact Student Learning, Laurie A. Herson

USF Tampa Graduate Theses and Dissertations

This thesis discusses brain-based methodology and how educators can use brain-based techniques to impact, support, and advance cognitive growth. Current research on learning and memory is enabling educators to better understand how the brain learns and what environmental factors assist in or detract from student learning. Brain-based learning techniques are considered by brain-based researchers as one way to create a learning environment that fosters student learning at individual academic levels while concurrently challenging each student and promoting academic growth. Teachers can further student academic advancement through the direct manipulation of the classroom environment rather than by purchasing a particular program …

Tyrosinase-Like Activity Of Several Alzheimer’S Disease Related And Model Peptides And Their Inhibition By Natural Antioxidants, Kashmir Singh Juneja

USF Tampa Graduate Theses and Dissertations

Neurodegenerative diseases are associated with loss of neurons ultimately leading to a decline in brain function. Alzheimer's disease (AD) is considered one of the most common neurodegenerative disorders that affects 16 million people worldwide. The cause of the disease remains unknown, although significant evidence proposes the amyloid Beta-peptide (A-Beta) as a potential culprit. The binding of Cu2+ by the soluble fragments of A-Beta have shown to form Type-3 copper centers and catalyze the oxidation of catechol-containing neurotransmitters. Furthermore, the use of flavonoids as antioxidants to slow or inhibit the neurotransmitter oxidation has suggested further health benefits with their consumption. A …

A Methodology For Developing A Nursing Education Minimum Dataset, Aziza A. Rajab

USF Tampa Graduate Theses and Dissertations

Globally, health care professionals, administrators, educators, researchers, and informatics experts have found that minimum dataset and taxonomies can solve the problem of data standardization required in building an information system to advance disciplines body of knowledge. Disciplines continuously gather complex data, but data collected without an organizational context does not increase the knowledge-base. Therefore, a demand exists for developing minimum dataset, controlled vocabularies, taxonomies, and classification systems. To fulfill nursings needs for standardized comparable data, two minimum dataset are used in nursing for organizing, classifying, processing, and managing information for decision-making and advancing clinical nursing knowledge.

No minimum dataset in …

Ammonium Distribution And Dynamics In Relation To Biological Production And Physical Environment In The Marguerite Bay Region Of The West Antarctic Peninsula, Yulia Mikhailovna Serebrennikova

USF Tampa Graduate Theses and Dissertations

In this study, biogeochemical regimes of Marguerite Bay and the adjacent part of the West Antarctic Peninsula (WAP) continental shelf were delineated through integration of nutrient, hydrographic, and biological measurements obtained during the LTER and SO GLOBEC studies during austral summer, autumn, and winter of 2001 and 2002.

Marguerite Bay biogeochemical regime was found to differ from those of the adjacent WAP continental shelf. In terms of Treguer and Jacques (1992), Marguerite Bay is a combination of Coastal Continental Shelf Zone (CCSZ) and Seasonal Ice Zone (SIZ) distinguished by shallow mixing regime, high primary production and export production. At the …

Arterial Perfusion Detection Method By Synchronous Detection, Yohan Prevot

USF Tampa Graduate Theses and Dissertations

The pressure ulcer is a well-known clinical problem that has plagued many patients in acute-care hospitals and chronic-care facilities. The pressure ulcer has the potential to diminish the quality of a patient's life by hindering the person's physical and emotional well-being. In addition, pressure ulcers are a high-cost problem. Past studies have shown that costs related to the treatment of pressure ulcers have reached 1.335 billion dollars a year in the United States alone.

A pressure ulcer is defined as a lesion created by unrelieved pressure, which causes tissue ischemia and subsequently damages the underlying tissue. This sequence of events …