Digital Commons Network^™

Developing A School Social Work Model For Predicting Academic Risk: School Factors And Academic Achievement, Robert Lucio

USF Tampa Graduate Theses and Dissertations

The impact of school factors on academic achievement has become an important focus for school social work and revealed the need for a comprehensive school social work model that allows for the identification of critical areas to apply social work services. This study was designed to develop and test a more comprehensive school social work model. Specifically, the relationship between cumulative grade point average (GPA) and the cumulative risk index (CRI) and an additive risk index (ARI) were tested and a comparison of the two models was presented. Over 20,000 abstracts were reviewed in order to create a list of …

Formal Reasoning And Spatial Ability: A Step Towards "Science For All", Bo Jiang

USF Tampa Graduate Theses and Dissertations

This work conducts an evaluation of a non-majors science curriculum named Molecules of Life (MOL) that aims to provide effective science education to undergraduate students who are not majoring in scientific disciplines.

As part of the process of developing an assessment plan for MOL, three related studies were undertaken in order to help us choose assessment instruments for MOL. The first study examined the validity of student evaluations of teaching. The second study investigated the Test of Logical Thinking (TOLT) and Group Assessment of Logical Thinking (GALT), two widely-used instruments for measuring formal reasoning ability. GALT is very similar to …

Genetic Algorithm Based Design And Optimization Of Vlsi Asics And Reconfigurable Hardware, Pradeep Ruben Fernando

USF Tampa Graduate Theses and Dissertations

Rapid advances in integration technology have tremendously increased the design complexity of very large scale integrated (VLSI) circuits, necessitating robust optimization techniques in many stages of VLSI design. A genetic algorithm (GA) is a stochastic optimization technique that uses principles derived from the evolutionary process in nature. In this work, genetic algorithms are used to alleviate the hardware design process of VLSI application specific integrated circuits (ASICs) and reconfigurable hardware.

VLSI ASIC design suffers from high design complexity and a large number of optimization objectives requiring hierarchical design approaches and multi-objective optimization techniques. The floorplanning stage of the design cycle …

The Modulation By Anthrax Toxins Of Dendritic Cell Activation, Ping-Jen Chou

USF Tampa Graduate Theses and Dissertations

Bacillus anthracis produces lethal toxin (LT) and edema toxin (ET) and they suppress the function of LPS-stimulated dendritic cells (DC). Because DCs respond differently to various microbial stimuli, we compared toxin effects in bone marrow DCs stimulated with either LPS or Legionella pneumophila (Lp). DCs were enriched with GM-CSF for 9 days, purified by positive selection, and treated with toxins for 6h; cells were then stimulated with either LPS or Lp-infection for 24h. DC cytokine production and maturation marker expression varied depending upon cell stimulus and the mouse strain used. LT but not ET was more toxic for cells from …

The Social Context Of Cervical Cancer Knowledge And Prevention Among Haitian Immigrant Women, Janelle Marie Menard

USF Tampa Graduate Theses and Dissertations

Cervical cancer is the primary cause of cancer deaths among Haitian women; however, the social context of cervical cancer among Haitian immigrant women has not been systematically examined. The ways in which women assign meaning to this disease, understand its causality and situate it within the broader context of gynecological health are poorly understood. Further, Haitian immigrant women's perceptions of disease risk, including knowledge and understanding about Human Papillomavirus (HPV), the primary etiologic factor in cervical cancer, have not been explored. Few studies have assessed health behaviors, including culturally mediated feminine hygiene practices, among Haitian immigrant women, which may negatively …

Kernel Density Estimation Of Reliability With Applications To Extreme Value Distribution, Branko Miladinovic

USF Tampa Graduate Theses and Dissertations

In the present study, we investigate kernel density estimation (KDE) and its application to the Gumbel probability distribution. We introduce the basic concepts of reliability analysis and estimation in ordinary and Bayesian settings. The robustness of top three kernels used in KDE with respect to three different optimal bandwidths is presented. The parametric, Bayesian, and empirical Bayes estimates of the reliability, failure rate, and cumulative failure rate functions under the Gumbel failure model are derived and compared with the kernel density estimates. We also introduce the concept of target time subject to obtaining a specified reliability. A comparison of the …

The Role Of Pharmacists And Emergency Contraception: An Assessment Of Pharmacy School Curricula In The U.S. And The Knowledge, Attitudes, And Dispensing Practices Of Florida Pharmacists., Alice R. Richman

USF Tampa Graduate Theses and Dissertations

Emergency contraception is a safe and effective form of contraception that is 75%-89% effective in preventing pregnancies within 120 hours of unprotected intercourse. Emergency contraception is a type of hormonal contraception, containing high doses of estrogen and progestin (ethinyl estradiol plus levonorgestrel) or progestin only (levonorgestrel). Wider access to emergency contraception has the potential to decrease the number of unintended pregnancies and abortions in the U.S. The Food and Drug Administration (FDA) has previously denied any over-the-counter (OTC) access to emergency contraception and only recently approved it for OTC status for women 18 years old and over; therefore, pharmacists continue …

Public Opinion And The Introduction Of Congressional Environmental Legislation, 1973-2002, Hugh Eugene Jarvis

USF Tampa Graduate Theses and Dissertations

This study examines the relationship between public opinion about the environment and the introduction of congressional legislation on environmental issues. Using public opinion data gathered by the General Social Survey from 1977 to 2002, this work examines correlations between how the public views the environment in each and the number of bills introduced in the U.S. House and Senate addressing environmental issues. The findings indicate that there is a correlation between overall concern felt in the public and congressional action on certain aspects of environmental protection. The results also highlight the potentially disturbing finding that the race and economic class …

Correlates Of Mathematics Achievement In Developed And Developing Countries: An Hlm Analysis Of Timss 2003 Eighth-Grade Mathematics Scores, Ha T. Phan

USF Tampa Graduate Theses and Dissertations

Using eighth-grade mathematics scores from TIMSS 2003, a large-scale international achievement assessment database, this study investigated correlates of math achievement in two developed countries, Canada and the United States and two developing countries, Egypt and South Africa. Variation in math achievement within and between schools for individual countries was accounted for by a series of two-level HLM models. Specifically, there were five sets of HLM models representing student background, home resources, instructional practices, teacher background, and school background related factors. In addition, a final model was built by including all the statistically significant predictors in earlier models to predict math …

U.S. Based Business Needs For Technical/Occupational Employees With International Skills: Considerations For Community College And Sub-Baccalaureate Programs In The Tampa Bay Economic Zone., Ronald L. Olney

USF Tampa Graduate Theses and Dissertations

Significance: This study provides the first systematic needs assessment of a U.S. business region to determine if businesses want international skills taught in community college technical and occupational programs. Without this assessment, community college leaders and faculty are not able to determine whether they are adequately preparing students in these skills to be successful in tomorrow's fast paced, mobile and integrated global workforce.

Research Aims:

1. Conduct a needs assessment to determine whether international skills were considered important for employment entry or movement

2. Determine where businesses obtain international skills training.

3. Garner business recommendations for the improvement of international …

The Influence Of Specialized Cancer Hospitals In Florida On Mortality, Length Of Stay, And Charges Of Care, Patricia L. Spencer

USF Tampa Graduate Theses and Dissertations

This thesis analyzes the influence of specialized cancer hospitals in Florida on the outcomes of the mortality risk, length of stay, and charges of care among patients diagnosed with cancer, and performed a mastectomy, lumpectomy or radical prostatectomy, after controlling for age, gender, race, severity, type of hospital ownership, payment options, type of admission, and presence or absence of residency programs.

The Florida Agency for Health Care Administration inpatient hospital discharge dataset of 2005 was used to extract data. Analysis of covariance was used to compute the differences on the three outcomes as a function of the specialization/volume of the …

Artist Colonies In Europe, The United States, And Florida, Jennifer L. Aldrich

USF Tampa Graduate Theses and Dissertations

During the nineteenth century, an artistic trend spread across Europe. As urban centers housed the majority of professional artists, individuals and groups relocated to remote, bucolic areas to form art colonies. Artist colonies are typically defined as a group of artists, generally painters, writers, and composers who worked and lived as a community for a certain period of time¹. Artists left their city lifestyles as a response to urbanization and industrialization. In other words, the movement encouraged reform of social, environmental, and economic conditions to prevent the decline of true artisanship. The artistic response personified an underlying utopian …

The Role Of Curcumin In Human Dendritic Cell Maturation And Function, Shawna A. Shirley

USF Tampa Graduate Theses and Dissertations

Curcumin is the yellow pigment found in the Indian spice curry. It has anti-inflammatory, ant-oxidant, anti-cancer, anti-viral, anti-bacterial and wound healing properties. It is widely used in industry for its flavor as a spice and as a coloring agent because of its brilliant yellow color. It is also used as a dye for textiles and as an additive to cosmetics. Dendritic cells (DCs) are the sentinels of the immune system and functions as the bridge between the innate and adaptive immune response. The effect of curcumin on DCs is poorly understood. A study shows curcumin prevents the immuno-stimulatory function of …

Two Essays On Financial Condition Of Firms, Sanjay Kudrimoti

USF Tampa Graduate Theses and Dissertations

This dissertation includes two related chapters that analyze financial condition of firms. In the first chapter, I examine the relationship between the firms' level of cash holdings and governance. The findings show that higher levels of cash holdings are significantly related to strong governance. The results also show that firms with strong governance hold asymmetrically higher levels of cash than firms with weak governance when they have high growth opportunities. Furthermore, I also test the impact of financial constraint status of the firm on the level of cash holdings for both good and poorly governed firms separately. The results suggest …

A Molecular-Dynamics Study Of The Frictional Anisotropy On The 2-Fold Surface Of A D-Alnico Quasicrystalline Approximant, Heather Mcrae Harper

USF Tampa Graduate Theses and Dissertations

In 2005, Park et al. demonstrated that the 2-fold surface of a d-AlNiCo quasicrystal exhibits an 8-fold frictional anisotropy, as measured by atomic-force microscopy, between the periodic and aperiodic directions [40, 41]. It has been well known that quasicrystals exhibit lower friction than their crystalline counterparts [38, 18, 51, 30, 12, 54]; however, the discovery of the frictional anisotropy allows for a unique opportunity to study the effect of periodicity on friction when chemical composition, oxidation, and wear are no longer variables.

The work presented herein is focused on obtaining an understanding of the mechanisms of friction and the …

The Relationship Between Childhood And Adolescent Family Environment And Adult Psychological Functioning In Females Who Experienced Childhood Sexual Abuse, Ross Krawczyk

USF Tampa Graduate Theses and Dissertations

Research has shown childhood sexual abuse (CSA) to be related to many negative outcomes in adulthood including psychopathology. Findings in this area, however, are very inconsistent, with the relationship between CSA and adult outcomes varying greatly across studies. This relationship is further complicated by the co-occurrence with CSA of other risk factors in childhood. The present study examines the prediction of adult psychopathology, measured by the Brief Symptom Inventory (BSI; Derogatis, 1982), made by CSA, measured by the Early Sexual Experiences Survey (ESE; Bartoi & Kinder, 1998), childhood SES (Hollingshead, 1975), parental bonding, as measured by the Parental Bonding Instrument …

Three-Dimensional Microscopy By Laser Scanning And Multi-Wavelength Digital Holography, Alexander Khmaladze

USF Tampa Graduate Theses and Dissertations

This dissertation presents techniques of three-dimensional microscopy. First, an economical method of microscopic image formation that employs a raster-scanning laser beam focused on a sample, while non-imaging detector receives the scattered light is presented. The images produced by this method are analogous to the scanning electron microscopy with visible effects of shadowing and reflection. Compared to a conventional wide-field imaging system, the system allows for a greater flexibility, as the variety of optical detectors, such as PMT and position-sensitive quadrant photodiode can be used to acquire images. The system demonstrates a simple, low-cost method of achieving the resolution on the …

Spray Deposition Of Biomolecular Thin Films, Mihir K. Rayan

USF Tampa Graduate Theses and Dissertations

In this paper, a parametric study of the airbrush deposition technique was investigated for the deposition biomolecular thin films. The airbrush parameters under investigation were intake valve opening, carrier gas pressure, distance between the airbrush and substrate, concentration of solution, vapor pressure of solvent, and hydrophobic/hydrophilic substrate surface. This study was assessed through the characterization of dried droplet residues of Bovine Serum Albumin (BSA) and of complete films of BSA by means of scanning electron microscopy (SEM) and atomic force microscopy (AFM). It was determined that droplet size was mainly affected by carrier gas pressure and vapor pressure. The parameters …

A Longitudinal Study: The Impact Of A Comprehensive Emergency Management System On Disaster Response In The Commonwealth Of The Bahamas, Erin P. Hughey

USF Tampa Graduate Theses and Dissertations

Global trends show increasing losses from disasters as the number of people at risk grows by 70 to 80 million per year (United Nations, 2004). Although the frequency of natural disasters may be constant the human interaction with the given hazard has shifted through changes in development practices, environmental protection as well as the distribution of population and wealth. In an effort to combat the negative social, economic, and environmental impacts of hazards, strategies for identifying vulnerable populations and implementing mitigation measures is a high priority in hazards research. However despite our best efforts disasters have and will continue to …

Flavonoids As Modulators Of Amyloid Precursor Protein Metabolism And Alzheimer Disease Pathology, Kavon Rezai-Zadeh

USF Tampa Graduate Theses and Dissertations

Alzheimer disease (AD) is a progressive neurodegenerative disorder pathologically characterized by deposition of ß-amyloid (Aß) peptides as plaques in the brain. Central to this AD pathology is mismetabolism of the amyloid precursor protein (APP). Recent studies suggest that flavonoids, a class of secondary plant metabolites, may be useful for the prevention and treatment of a variety of neurodegenerative diseases. The studies detailed herein, investigate the ability of two such classes of flavonoids, green tea derived catechins and 5,7-dihydroxyflavones, to modulate APP metabolism in "Swedish" mutant APP (APP_sw) models of AD. Studies showed that green tea derived (-)-epigallocatechin-3-gallate (EGCG) …

Evaluating The Efficacy Of The Developing Algebraic Literacy Model: Preparing Special Educators To Implement Effective Mathematics Practices, Sharon N. E. Ray

USF Tampa Graduate Theses and Dissertations

For students with learning disabilities, positive academic achievement outcomes are a chief area of concern for educators across the country. This achievement emphasis has become particularly important over the last several years because of the No Child Left Behind legislation. The content area of mathematics, especially in the higher order thinking arena of algebra, has been of particular concern for student progress. While most educational research in algebra has been targeted towards remedial efforts at the high school level, early intervention in the foundational skills of algebraic thinking at the elementary level needs consideration for students who would benefit from …

Three Wittgensteins: Interpreting The Tractatus Logico-Philosophicus, Thomas J. Brommage Jr.

USF Tampa Graduate Theses and Dissertations

There are historically three main trends in understanding Wittgenstein's Tractatus. The first is the interpretation offered by the Vienna Circle. They read Wittgenstein as arguing that neither metaphysical nor normative propositions have any cognitive meaning, and thus are to be considered nonsense. This interpretation understands Wittgenstein as setting the limits of sense, and prescribing that nothing of substantive philosophical importance lies beyond that line. The second way of reading the Tractatus, which has became popular since the 1950s, is the interpretation which most currently accept as the early Wittgenstein's view; for this reason I refer to it …

Resiliency In Academically Successful Latina Doctoral Students: Implications For Advocacy, Katherine M. Fuerth

USF Tampa Graduate Theses and Dissertations

Research indicates that the Latina/o population is growing in the United States, and more Latina/os are attending college, many do not continue their education beyond the undergraduate level, much less beyond the Master's level. Latinas in particular continue to be underrepresented in professional roles due to the small number of Latinas who obtain doctoral degrees. Although many Latinas do not continue their education or drop-out throughout their graduate schooling, some Latinas do thrive forward and are academically successful. This study aimed at identifying elements that fostered resiliency in academically successful Latina doctoral students, as well as identifying challenges or barriers …

Factors Affecting Message Intelligibility Of Cued Speech Transliterators, Katherine Pelley

USF Tampa Graduate Theses and Dissertations

While a majority of deaf students mainstreamed in public schools rely on interpreters, little research has investigated interpreter skills and no research to date has focused on interpreter intelligibility (Kluwin & Stewart, 2001). This thesis is the second in a series of experiments designed to quantify the contribution of various factors affecting the intelligibility of interpreters (transliterators) who use English-based communication modes. In the first experiment, 12 Cued Speech transliterators were asked to transliterate an audio lecture. Two aspects of these transliterated performances were then analyzed: 1) accuracy, as measured as the percent-correct cues produced, and 2) lag time, the …

Luminex Microsphere Immunoassay Offers An Improved Method In Testing For Antibodies To Eastern Equine Encephalitis Virus In Sentinel Chicken Sera, Kelly Ann Fitzpatrick

USF Tampa Graduate Theses and Dissertations

Eastern Equine Encephalitis virus has a human mortality rate of 30% of those cases diagnosed, while 30% of those surviving infection remain with neurological sequelae for life (CDC.gov, 2007).

The use of sentinel chickens for surveillance of arboviruses that are known to use birds as a reservoir host, such as St. Louis Encephalitis (SLE), West Nile (WN) virus, Eastern Equine Encephalitis (EEE) and Highlands J (HJ) virus, in Florida began with the Sentinel Chicken Arboviral Surveillance Network in 1978 (Day and Stark, 1996). This network enables the activation of an early warning system for citizens, as well as, county epidemiologists …

Performance And Perception: An Experimental Investigation Of The Impact Of Continuous Reporting And Continuous Assurance On Individual Investors, Anita Reed

USF Tampa Graduate Theses and Dissertations

This study was designed to examine the impact of different levels of reporting frequency (periodic versus continuous) of financial information, both with and without assurance, on individual investors in a stock price prediction task. Reporting was manipulated at two levels: periodic and continuous. Assurance was manipulated at two levels: no assurance and with assurance. In addition, a base level condition was included. The experiment was designed to collect data regarding both the investors' performance and their perceptions. Period one of the experiment consisted of the base level condition for all participants. Independent variable manipulation was implemented in period two, using …

The Acceptability Of Treatments For Adolescent Depression To A Multi-Ethnic Sample Of Girls, Nicole Caporino

USF Tampa Graduate Theses and Dissertations

An efficacious treatment is diminished in value if clients will not seek it out and adhere to it (Kazdin, 1978). Thus, the acceptability of a treatment to consumers is an important indicator of the quality/effectiveness of the treatment (APA, 2002). The purpose of this study was to examine acceptability of treatments for depression to adolescent females and to explore factors that might be associated with acceptability. Sixty-seven high school students (36 Hispanic and 31 non-Hispanic White) were recruited from communities in New Jersey and Florida, and interviewed by telephone. Participants were presented with a vignette describing a depressed adolescent and …

Stable Carbon Isotope Discrimination By Form Ic Rubisco From Rhodobacter Sphaeroides, Phaedra Thomas

USF Tampa Graduate Theses and Dissertations

Variations in the relative amounts of ¹²C and ¹³C in microbial biomass can be used to infer the pathway(s) autotrophs use to fix and assimilate dissolved inorganic carbon. Discrimination against ¹³C by the enzymes catalyzing autotrophic carbon fixation is a major factor dictating the stable carbon isotopic composition (δ¹³C = {[¹³C/¹²C_sample/¹³C/¹²C_standard] - 1} X 1000) of biomass. Six different forms of ribulose 1,5-bisphosphate carboxylase/oxygenase or RubisCO (IA, IB, IC, ID, II, and III), the carboxylase of the Calvin-Benson-Bassham cycle (CBB), are utilized by algae and autotrophic bacteria that rely on the CBB cycle for carbon fixation. …

Benzene Related Hematological Disorders: Evidence For A Threshold In Animals And Humans, James Mccluskey

USF Tampa Graduate Theses and Dissertations

Significant benzene exposure has historically been associated with the development of a host of hematological disorders in humans and animals. In particular, benzene is known to cause disturbances of the peripheral blood, aplastic anemia and cancer of the lymphohematopoietic system. In 1928, the first modern report of an association between cancer and benzene exposure was published. This case report was followed by additional reports from around the world. In most instances, ailments resulted from long term, high level exposure to benzene found in glues, and through accidental industrial spills. Throughout the 1960's and 1970's, case reports accumulated linking benzene exposure …

Face To Face: English Uses And Understanding Of The Beard In Early Virginian Contacts, Jacqueline Colleen Barber

USF Tampa Graduate Theses and Dissertations

Many historians agree that categories of human division underwent a drastic change due to European New World encounters. The shift from religious divisions to ones based on ethnicity and skin color gradually developed in early modern Europe. Hence, before natives became "red," and Europeans "white" a period existed where the differences between these cultures were utilized in a variety of means to prove similarity and difference.

One element signifying difference during the early contact period was that of the beard. Hair as an identifier has a long history: through the middle ages, wildness was conveyed by hair and at times …