Digital Commons Network^™

Crystallization Studies Of Epigallocatechin Gallate, Sheshanka Kesani

USF Tampa Graduate Theses and Dissertations

Flavonoids are a long and well known class of natural products. Their potential health benefits can be attributed to their antioxidant activity, and modulation of cell signaling pathways. Green tea one of the most widely consumed beverages, consist of flavonoids such as catechins and tannins. Epigallocatechin gallate (EGCG) the major catechin of green tea exhibits multiple health benefits due to its antioxidant nature. The radical scavenging activity of EGCG is attributed to its structure. Therefore, a study on molecular features of EGCG would provide valuable information on structural modifications, which may change the physiochemical properties such as bioavailability and solubility. …

The “Dark Side” Of Ocb: Examining The Relationship Between Citizenship Behavior And Work-To-Family Conflict, Rebecca H. Klein

USF Tampa Graduate Theses and Dissertations

Research on organizational citizenship behaviors (OCB) has focused on the positive aspects of the construct, neglecting the possibility that individuals who engage in OCB may suffer negative consequences. Thus, the present study expands the literature by examining the possibility that OCB is also related to negative individual-level factors, such as work-to-family conflict (WIF). In a replication and extension of Bolino and Turnley's (2005) research, the present study offers an in-depth analysis of the relationship between OCB and WIF, examining two potential mediators (work time and role overload) and two potential moderators (gender and perceptions of OCB as discretionary). Two hundred …

Sol-Gel Immobilized Cyano-Polydimethylsiloxane And Short Chain Polyethylene Glycol Coatings For Capillary Microextraction Coupled To Gas Chromatography, Sameer M. Kulkarni

USF Tampa Graduate Theses and Dissertations

Two highly polar sol-gel coatings were developed for capillary microextraction (CME). One of the coatings contained cyanopropyl-polydimethylsiloxane (CN-PDMS) and the other low molecular weight polyethylene glycol. These highly polar coatings were immobilized via sol-gel chemistry allowing for direct chemical bonding to the inner surface of fused silica capillaries. These sol-gel coated microextraction capillaries were employed in CME for solvent-free microextraction and preconcentration of trace analytes (polar, moderately polar, and nonpolar) from aqueous matrices. CN-PDMS and short chain PEG extraction phases exhibit both polar and polarizable characteristics. Therefore, both sol-gel CN-PDMS and short chain sol-gel PEG coatings were able to extract …

Comparative Effects Of The Toxic Dinoflagellate, Karenia Brevis, On Bivalve Molluscs From Florida, James R. Leverone

USF Tampa Graduate Theses and Dissertations

The effects of the toxic dinoflagellate, karenia brevis (Wilson clone), on larval survival and development of the northern quahog (=hard clam, Mercenaria mercenaria), eastern oyster (Crassostrea virginica) and bay scallop (Argopecten irradians) were studied in the laboratory. The effects of K. brevis on feeding activities of juveniles from these species plus the green mussel (Perna viridis) were also examined. Finally, adult bay scallops were exposed to K. brevis for two weeks to investigate possible cytotoxic effects. Survival of 3-day-old larvae was generally > 85% for all shellfish species at Karenia brevis densities of 100 cells . ml-1 or less, and not …

Medicaid Risk Adjustment Model With Diagnosis And Pharmacy-Based Adjusters: Does It Work?, Yanen Li

USF Tampa Graduate Theses and Dissertations

National health expenditures will continue to grow faster than nominal gross domestic product (GDP) in the early 21st century (Heffler et al., 2002; Heffler et al., 2005). Increased Medicaid costs have spurred research to find reliable cost-saving methodologies (Kronick et al., 1996). The Medicaid administrations of some states have chosen risk adjustment as a methodology for savings (Tollen et al., 1998; Weiner et al., 1998), since it can reduce the financial burden of health care providers and distribute medical resources more efficiently. This dissertation presents a risk-adjustment model based on two types of health condition adjusters: diagnosis-based HCC adjusters and …

Meaning Makers Make It: Ambivalence About Ambiguity In Academic Discourse, David Haldane Lee

USF Tampa Graduate Theses and Dissertations

This thesis is a broad survey of the uses of ambiguity in academic discourse. I note the uses of ambiguity in literary criticism, linking ambiguity with epistemic relativism. Then I pose the question, is the notion of "reframing" in psychotherapy analogous to the concept of "spin" in propaganda, advertising and public relations? In a consideration of theories that posit the social construction of reality, I examine articles by Judith Butler and Ian Hacking, noting the ambiguous reception of performativity and nominalism, respectively, within academia. In 1996 a physicist named Alan Sokal published an article which argued that reality is a …

The Effects Of Alcohol And Nicotine Pretreatment During Adolescence On Adulthood Responsivity To Alcohol, Antoniette M. Maldonado

USF Tampa Graduate Theses and Dissertations

Adolescence is a period of development that is associated with increased risk taking behaviors and experimenting with drugs of abuse, including alcohol and nicotine. Early onset of use of these agents may be associated with long-term changes in behavior and enhanced sensitivity to the subsequent effects of alcohol in adulthood. The present experiment was designed to assess the long-term behavioral alterations that occur due to adolescent exposure to ethanol and nicotine, either alone or in combination, on adulthood responsivity to the rewarding properties of environmental cues paired with ethanol. It was hypothesized that adolescent rats exposed to the combination of …

The Relationship Between Continuing Professional Development And Demographic Characteristics, Professional Practices, And Employment Conditions Of School Psychologists, Alana D. Lopez

USF Tampa Graduate Theses and Dissertations

Multiple issues that impact service delivery, such as changing student demographic characteristics, educational law and policy, and an increased focus on accountability for services, require school psychologists to adapt and acquire new professional skills in order to meet the needs of students and families. Continuing professional development (CPD) could help school psychologists expand their repertoire of professional skills so that they can engage in effective service delivery. The present study examined the CPD subject areas endorsed by practicing school psychologists and the relationship of those areas with selected demographic characteristics, professional practices, and employment conditions. Secondary analyses were performed using …

Achieving Sobriety: A Narrative Investigation Of Women, Identity, And Relationships, Cara T. Mackie

USF Tampa Graduate Theses and Dissertations

In this dissertation, I explore the question of how women alcoholics achieve sobriety. Using narrative inquiry, I focus on the identity transformation that must occur in order to maintain sobriety and how a drinking self is deconstructed and reconstructed as a sober self. Today, alcoholism is still viewed as stigmatizing in our society and in all Western cultures. The stigma of alcoholism makes it difficult for alcoholics to communicate their experiences to people who have not had similar experiences. However, storytelling in the presence of supportive people has been shown to be a prominent factor in the process of recovery …

A Comparative Ecological Study Between Coyotes (Canis Latrans) In A Protected And Urban Habitat: A Closer Look At Enteric Parasites And Diet Between Florida Coyotes, Denara Lynn Manning

USF Tampa Graduate Theses and Dissertations

Coyotes (Canis latrans) have inhabited Florida (USA) since the 1960s and are currently found throughout the state. The purpose of the present study was to obtain information on enteric parasites and diet of Florida coyotes from two different habitat types. Seasonal variation in diet was also examined. Fresh coyote fecal samples were collected from protected and urban habitats in Pinellas County, Florida (USA; 27°54' n, 82°41'w) from may 2005 to march 2007. A standard fecal flotation examination and formalin-ethyl acetate sedimentation were utilized on fecal samples collected from the protected (n=40) and urban (n=50) habitats. Five novel (newly documented) parasites …

Ethyl Methacrylate And Methyl Methacrylate Exposure Among Fingernail Sculptors, Adam Marty

USF Tampa Graduate Theses and Dissertations

Fingernail sculptors may be exposed to ethyl methacrylate and methyl methacrylate in their workplace. The literature suggests that these chemicals may cause sensitization in individuals who are exposed to sufficient quantities. Cases of occupational asthma and allergic contact dermatitis have been reported among persons who work with these chemicals. Little personal exposure data exists on nail technicians' exposures to these chemicals, especially ethyl methacrylate. The literature suggests that the industrial hygiene practices used for methyl methacrylate also be applied to ethyl methacrylate since more is known about methyl methacrylate. Previous exposure studies have revealed relatively low exposures to these chemical. …

The Baccalaureate Community Colleges In Florida: A Policy Evaluation, Nicholas Manias

USF Tampa Graduate Theses and Dissertations

This study sought to determine if community college baccalaureate programs in Florida were fulfilling the goals that were set forth in the legislation that created them. The study examined whether the baccalaureate level education programs at three community colleges in Florida were increasing access to baccalaureate education. The study investigated enrollment trends at all public institutions in Florida, reasons why students chose the community colleges for their upper division education, alternative plans students may have had if these programs did not exist, whether the limited number of baccalaureate programs at the community colleges impacted students' choice of major, and how …

Venturesome Women: Nineteenth-Century British Women Travel Writers And Sport, Precious Mckenzie-Stearns

USF Tampa Graduate Theses and Dissertations

This dissertation analyzes the travel writings of Isabella Bird Bishop, Mary Kingsley, Florence Douglas Dixie, and Isabel Savory. While away from England, these women writers participated in cultural exchanges which led to reevaluations of British womanhood. British women travel writers operated not only within the power structures of gender but also within the structures of empire, class, and race. Women travel writers blazed the trail for the New Woman of the end of the century. Before cycling and cigarette smoking were allowed, daring women such as Isabella Bird Bishop and Mary Kingsley crisscrossed the globe in defiance of patriarchal tradition …

Between Knowledge & Practice: Factors That Influence The Operationalization Of Sexual Health Knowledge In African American Female College Students, Jamae F. Morris

USF Tampa Graduate Theses and Dissertations

This paper explores some of the factors that influence whether African American female college students implement safe sex knowledge. High rates of HIV/AIDS and other sexually-transmitted infections (STIs) in the black community and the overrepresentation of individuals under the age of 25 in sexually-transmitted infection (STI) reports indicate the need for research that investigates the physical, social, and cultural aspects of high-risk sexual behaviors and the factors that influence them for this group. African American female college students present a unique challenge to sexual health educators; a challenge that has been relatively under acknowledged and under addressed in research and …

Perceptions Of Group Exercise Participants Based On Body Type, Appearance, And Attractiveness Of The Instructor, Jennifer Mears

USF Tampa Graduate Theses and Dissertations

Physical activity reduces the risk for disease, improves overall health, and quality of life. Group exercise classes are large contributors for meeting physical activity recommendations. Improving long-term adherence to group exercise classes is essential in order to receive health and fitness benefits. Many contributing factors affect adherence rates including the role of the instructor. The instructor has great influence over the decision to return to a group exercise class. It is important to find out what qualities and characteristics are preferred among those who take classes to increase long-term adherence. Another important factor relating to adherence is body type, appearance …

Modulation Of Adult Neural Plasticity By Proteolytic Catabolism Of Lecticans, Joanne Mayer

USF Tampa Graduate Theses and Dissertations

The extracellular environment of the central nervous system (CNS) through which neuritic processes must traverse during development or after injury is complex, and may vary from stabile conditions to a milieu favorable for neural plasticity and growth. The extracellular space in the CNS accounts for about 20% of brain volume and is composed of aggregating complexes of several different extracellular matrix (ECM) molecules. The ECM supports neural networks and acts as a barrier for neurite extention, depending on the type of molecules involved and the various signals they induce. One mechansim that may produce an environment favoring plasticity is the …

The Influence Of Acculturation And Other Family Characteristics On Asthma Outcomes In Hispanic Children, Rose M. Nieves

USF Tampa Graduate Theses and Dissertations

The objective of this study was to determine the influence of child and caregiver characteristics on asthma outcomes in Hispanic children. Specific research objectives of the study were to: (1) to asses the relative influence of family characteristics, caregiver level of education, asthma severity, insurance status and acculturation, on asthma outcomes in Hispanic children; (2) to asses the direct and indirect influence of acculturation on asthma outcomes in Hispanic children, while controlling for other variables; (3) to determine the relative influence of familial characteristics, parental level of education, asthma severity, insurance status and acculturation, as they predict utilization of asthma …

Positive Protective Factors As Moderators In The Relationship Between Relational Victimization And Depression In Minority Adolescents, Stephanie Tamara Mihalas

USF Tampa Graduate Theses and Dissertations

This study explored the relationship between relational victimization and depression among middle school students (n = 153) in an urban school in Florida. The majority of participants were African-American and Hispanic at-risk youth. This study is one of the first to study how positive protective factors (i.e., hope, spirituality, perceived social support) moderate the relationship between victim status and depression. A mixed methods design was used to gain further insight into the survey data collected. Findings from the study indicated that hope and perceived social support were statistically significant moderator variables. Additionally, results from the qualitative interviews suggested that teachers, …

Back Massage: Long Term Effects And Dosage Determination For Persons With Pre-Hypertension And Hypertension, Christine M. Olney

USF Tampa Graduate Theses and Dissertations

Significance: Complementary and alternative therapies (CAM) are widely used however the efficacy of many CAM therapies for specific diseases has yet to be verified. Massage therapy, specifically back massage, used to assist in the management of elevated blood pressure is one such unverified therapy. A pilot study completed in 2002 resulted in significant changes in blood pressure using a repeated application of the 10 minute back massage. Research Aims: This study, evolving from a psychophysiology framework, aimed to determine the long term efficacy of a back massage treatment and possible dosage needed to effectively assist in the management of elevated …

The Impact Of Fidelity And Innovations On Healthy Families America Programs, Ashley E. Nixon

USF Tampa Graduate Theses and Dissertations

Fidelity to a program model and innovations added to the program model have been found to positively impact large scale program expansion and implementation (Blakely et al., 1987). Research examining the effectiveness of Healthy Families America (HFA) programs has been hindered by the differences that exist among HFA programs. This study examines the impact program fidelity and innovations have on outcome measures of updated immunizations, primary medical care providers, and participant retention for 102 HFA sites. Factor analysis and regression were used to analyze archival data. Results indicate that fidelity was positively related to percentage of participants with updated immunizations …

A Three-Dimensional Biophysical Model Of Light, Nutrient, And Grazing Controls On Phytoplankton Competition Affecting Red Tide Maintenance On The West Florida Shel, Scott P. Milroy

USF Tampa Graduate Theses and Dissertations

A coupled, three-dimensional, time-dependent numerical model of water circulation, spectral light, plankton dynamics, nutrient/CDOM loadings, and zooplankton grazing provided an assessment of the factors affecting the growth and maintenance of red tides on the west Florida shelf (WFS). The coupled biophysical model consisted of state variable quantities for temperature, salinity, horizontal/vertical velocity components, turbulent diffusion, spectral light, colored dissolved organic matter (CDOM), dissolved organic and inorganic carbon, particulate silica, four dissolved inorganic nutrient pools (nitrate, ammonium, phosphate, and silicate), and four phytoplankton groups (diatoms, microflagellates, non-toxic dinoflagellates, and the red tide organism Karenia brevis).

The model also included a complex …

Key Stakeholder Perceptions Of The Expulsion Process For High School Students Identified As Emotionally Disturbed, Suzanne R. O'Neill

USF Tampa Graduate Theses and Dissertations

This study examined how the expulsion process works for seven male ninth grade students identified as emotionally disturbed and in particular, the perceptions students, their parents, five district representatives, and five high school administrators involved in an expulsion have of the process. Furthermore, the study investigated through in-depth interviews possible differences in perceptions between those students who are expelled, parents, and key education personnel involved in expulsion decisions. Computer-based qualitative data analysis software was used to organize and analyze the collected data. Results of the study indicate that the two primary key stakeholder participants; students and their parents, shared predominately …

Depressive Symptomatology, Patient-Provider Communication, And Patient Satisfaction: A Multilevel Analysis, Lorraine Marie Novosel

USF Tampa Graduate Theses and Dissertations

Depression can be a profoundly disabling and costly disorder and is a major public health concern. Despite the efficacy of treatment options, it is often unrecognized, under-diagnosed, and inadequately treated in primary care settings. Research on patient-provider communication supports the connection among the quality of the patient-provider interaction, patient behavior, and health outcomes. The purpose of this study was to systematically examine the impact of patients' depressive symptoms on the patient-provider relationship, patient-provider communication, and patient satisfaction with the primary care office visit. One hundred twenty three patient-provider encounters were audiotaped and coded using the Roter Interaction Analysis System (RIAS). …

Comparison Of Two Treatments For Finger Tip Amputation: A Retrospective Cohort Study, Karen Olson

USF Tampa Graduate Theses and Dissertations

Purpose: To compare the costs and length of disability for conservative treatment versus skin grafting of distal finger and thumb tip amputations. Methods: Thirty-five zone I finger or thumb tip amputations in thirty-five workers in the Southeastern United States were included in this study. Twenty-four were treated with conservative treatment (bandaging to protect the wound). Eleven were treated with skin grafting. The total cost of medical care, total cost including wage replacement, and the length of disability were compared between the two groups. Impairment at the end of treatment was considered. Results: Even when the cost of wage replacement was …

The Role Of Norepinephrine In Learning: Cerebellar Motor Learning In Rats, Daniel A. Paredes

USF Tampa Graduate Theses and Dissertations

Delay classical eyeblink conditioning is an important model of associative, cerebellar dependent learning. Norepinephrine (NE) plays a significant modulatory role in the acquisition of learning; other neurotransmitter systems are also at play. The goal of this dissertation was to determine whether NE, GABA and glutamate (Glu) release is observed in cerebellar cortex during delay eye blink conditioning, and whether such release was selectively associated with training and not due only to stimulatory sensory input. The data support the hypothesis of noradrenergic and GABAergic system involvement in motor learning with NE as a modulator of early responding and GABA as a …

Good News To The Poor: The Place Of Microeconomic Development In Discipling And Poverty Alleviation In Nairobi, Kenya, Philip Kairu Thuo

ATS Dissertations

No abstract provided.

Warm: Wearable Assistant With Remote Monitoring, Lisa Michelle Provenzano Heugel

USF Tampa Graduate Theses and Dissertations

Wearable computing has been in existence as part of our attire for many years, a few examples being the watches, cell phones and MP3 players. Recently, many researchers have been devising ways to incorporate wearable devices seamlessly into our lives with the goal of making them an indispensable part of our daily routines. In this thesis, a new wearable computing device called WARM (Wearable Assistant for Remote Monitoring) for use by the elderly and the handicapped is proposed and its software architecture is defined and described. The physically challenged or the elderly, living on their own, but who require assistance …

An Existential-Phenomenological Investigation Of Self-Cutting Among Adolescent Girls, Amanda A. Privé

USF Tampa Graduate Theses and Dissertations

The present study examined the experience of self-cutting, what stops adolescent girls from engaging in self-cutting, and what message adolescent girls who are self-cutting would want to send to other girls taking part in this behavior. Using an existential-phenomenological method of interviewing, adolescent girls were asked a serious of questions in order to gain insight into their thoughts, feelings, and beliefs about the experience of self-cutting. Each interview was tape recorded, transcribed, and thematized. The participants in this study were labeled co-researchers due to the significant role that they had in the completion of this study. The co-researchers consisted of …

Modifiable Factors For Disability: Is There Potential For Reducing Racial Disparities In Disability In Older Age?, Mihaela A. Popa

USF Tampa Graduate Theses and Dissertations

White-Black disparities in disability in the older population are consistently reported in the literature, and are usually ascribed to differences in socio-economic, health, and cognitive status. However, the role of modifiable influences on disability, such as health and lifestyle behaviors or health care utilization on these differences is less clear. This dissertation examines: (1) longitudinal White-Black differences in disability and the potential contributions of distinct health behaviors to these differences; (2) White-Black differences in the effects of health care utilization on trajectories of disability; and (3) whether cognition mediates the effects of health behaviors on disability in Whites and in …

Third Grade Retention And Florida’S Pupil Progression Plan: Individual And School Characteristics Associated With Long-Term Outcomes In Reading Performance, Heather A. Powell

USF Tampa Graduate Theses and Dissertations

Literacy is a growing national concern that has resulted in federal legislation (e.g., the No Child Left Behind Act) instituting higher accountability for states and schools with regard to reading instruction and remediation. As a result, Florida's statewide measure of achievement, the reading portion of the Florida Comprehensive Assessment Test (FCAT-Reading) is now tied to retention decisions for students in the third grade as part of the pupil progression plan for the state. In its first year of implementation (2003), 23% of third-grade students failed the FCAT and over 28,000 were retained. Though failure rates are decreasing, (i.e., 6% of …