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Rib Fracture Patterns In Fatal Motor Vehicle Accidents, Cristina Lynn Kelbaugh

USF Tampa Graduate Theses and Dissertations

Rib fractures are present in 25 percent of all trauma-related deaths, making the mechanism and pattern of rib fractures an important area of trauma research (Lien et al. 2009). Rib fractures are important to consider when researching trauma because they can cause serious complications contributing to an individual's mortality.

This retrospective research study focuses on rib fracture patterns in fatal motor vehicle accidents (MVAs). The sample consists of 105 MVA victims--68 males and 37 females. Data was collected at the Hillsborough County Medical Examiner's Office in Tampa, Florida. The study investigates motor-vehicle-related deaths from 2011 to 2013 to establish rib …

Reconstructing Paleoenvironments Of The Plio-Pleistocene Tamiami Formation Of Florida With Benthic Foraminifera, Heather Bender

USF Tampa Graduate Theses and Dissertations

There is general agreement that a range of paleodepths and environments are represented in the individual shell units of the middle Pliocene to earliest Pleistocene Tamiami Formation of southwest Florida, but maximum depths remain poorly constrained. Here, benthic Foraminifera abundances are used as a paleoenvironmental proxy to compare the upper Tamiami from quarries in Sarasota, Florida to Recent modern coastal, bay, and reef habitats of Florida, the Grand Cayman Islands, and Puerto Rico, ranging in depth from 0 to 55 meters. I used: (1) ordination techniques, including detrended correspondence analysis (DCA) and cluster analysis, to compare upper Tamiami foraminiferal assemblages …

Development And Application Of Web-Based Open Source Drug Discovery Platforms, Yuri Pevzner

USF Tampa Graduate Theses and Dissertations

Computational modeling approaches have lately been earning their place as viable tools in drug discovery. Research efforts more often include computational component and the usage of the scientific software is commonplace at more stages of the drug discovery pipeline. However, as software takes on more responsibility and the computational methods grow more involved, the gap grows between research entities that have the means to maintain the necessary computational infrastructure and those that lack the technical expertise or financial means to obtain and include computational component in their scientific efforts. To fill this gap and to meet the need of many, …

An Investigation Of The Effects Of Increased Tidal Inundation, Competition, And Facilitation On Salt Marsh Systems, Jennifer A. Hyder

USF Tampa Graduate Theses and Dissertations

The low-lying topographic nature of salt marshes makes plants in these communities particularly vulnerable to increased salinity and inundation exposure associated with sea level rise. Both increased salinity and inundation have been cited as major causes of reduced plant performance and survival in marsh and areas fringing marsh. In addition to limitations imposed by physical stress, interspecific interactions have also been shown to mediate the performance and survival of salt marsh and salt marsh fringing species. The Stress Gradient Hypothesis (SGH) postulates that species interactions shift from competitive to facilitative as stress levels increase and predicts that (a) the frequency …

Application And Development Of Computational Methods In Conformational Studies Of Bio-Molecules, Aleksandra Karolak

USF Tampa Graduate Theses and Dissertations

The work presented in my dissertation focuses on the conformational studies of bio-molecules including proteins and DNA using computational approaches. Conformational changes are important in numerous molecular bioprocesses such as recognition, transcription, replication and repair, etc. Proteins recognize specific DNA sequences and upon binding undergo partial or complete folding or partial unfolding in order to find the optimal conformational fit between molecules involved in the complex. In addition to sequence specific recognition, proteins are able to distinguish between subtle differences in local geometry and flexibility associated with DNA that may further affect their binding affinities. Experimental techniques provide high-resolution details …

Spatially-Weighted Ethnic Density And Residential Segregation: Effects On Health Status Among Older Mexican Americans, Sung Han Rhew

USF Tampa Graduate Theses and Dissertations

Research suggests that living in communities with high densities of persons from their own ethnic group improves the overall health of older Mexican Americans. One hypothesis is that residing in high ethnic density areas allows characteristics of Mexican culture such as strong social ties and social cohesion, to have a beneficial effect. The majority of investigations focused on ethnic density effects, however, have utilized relatively loose interpretations of what constitutes the appropriate social-geographic area to be studied. Moreover it is not clear how certain dimensions of residential segregation are protective or harmful toward health, particularly when measuring ethnic residential segregation …

Use Of Assessments In College Chemistry Courses: Examining Students' Prior Conceptual Knowledge, Chemistry Self-Efficacy, And Attitude, Sachel M. Villafañe-García

USF Tampa Graduate Theses and Dissertations

Students' retention in STEM-related careers is of great concern for educators and researchers, especially the retention of underrepresented groups such as females, Hispanics, and Blacks in these careers. Therefore it is important to study factors that could potentially influence students' decision to stay in STEM. The work described in this dissertation involved three research studies where assessments have been used in college chemistry courses to assess students' prior content knowledge, chemistry-self-efficacy, and attitude toward science. These three factors have been suggested to have an influence on students' performance in a course and could eventually be a retention factor.

The first …

Investigation Of Bioactive Metabolites From The Antarctic Sponge Dendrilla Membranosa And Marine Microorganisms, Chris G. Witowski

USF Tampa Graduate Theses and Dissertations

Natural products continue to be a valuable source of compounds in research involving chemical ecology and drug discovery. Secondary metabolites are biosynthesized to benefit the host organism in its environment (feeding deterrence from predators, antibiotic properties to avoid infection, etc.) but these compounds also serve as useful scaffolds in drug discovery applications. The research herein describes both aspects of these two branches of natural products chemistry. The Antarctic sponge Dendrilla membranosa produces diterpenes, of which membranolide A, deters feeding of the predatory amphipod Gondogenia antarctica. A metabolomic study of several sponges was undertaken to determine environmental factors that govern …

An Evaluation Of The Utah First District Mental Health Court: Gauging The Efficacy Of Diverting Offenders Suffering With Serious Mental Illness, Stephen Guy Vangeem

USF Tampa Graduate Theses and Dissertations

The decision to establish a mental health court in Utah's First District was largely a political one prompted by the growing popularity of problem-solving courts throughout the country. Because this motivation was policy-driven and not needs-driven, the court was established without an ongoing data collection schedule. As a result, barring anecdotal evidence from program participants, the current impact of the court on two key goals-- reducing recidivism and increasing community-based treatment contact--is entirely unknown. The current study aims to provide a summative program evaluation of the first sixty-eight months of specialty court operation by (1) estimating basic demographic and clinical …

Assessing Viscoelastic Properties Of Polydimethylsiloxane (Pdms) Using Loading And Unloading Of The Macroscopic Compression Test, Mustafa Fincan

USF Tampa Graduate Theses and Dissertations

Polydimethylsiloxane (PDMS) mechanical properties were measured using custom-built compression test device. PDMS elastic modulus can be varied with the elastomer base to the curing agent ratio, i.e. by changing the cross-linking density. PDMS samples with different crosslink density in terms of their elastic modulus were measured. In this project the PDMS samples with the base/curing agent ratio ranging from 5:1 to 20:1 were tested. The elastic modulus varied with the amount of the crosslinker, and ranged from 0.8 MPa to 4.44 MPa. The compression device was modified by adding digital displacement gauges to measure the lateral strain of the sample, …

"It Takes Time To Shift Historical Paradigms": Changes In Structure, Governance, Perception, And Practice During A Decade Of Child Welfare Policy Reform In Florida, Amy Catherine Vargo

USF Tampa Graduate Theses and Dissertations

This dissertation explored changes in structure, governance, perception and practice within Florida's child welfare system over a ten-year period (2001-2011) inclusive of two concurrent, statewide reform efforts: the privatization of child welfare services and implementation of a Title IV-E Waiver Demonstration. Using an anthropological perspective and holistic approach, the child welfare system is presented as a type of meta-organizational culture inclusive of subsystems and subcultures which are all embedded in historical and socioeconomic context that involves alternations between child safety and family preservation approaches to care.

Guided by a grounded theory approach to qualitative data analysis, content analysis of child …

Large-Eddy Simulation Of The Inner Continental Shelf Under The Combined Effects Of Surface Temperature Fluxes, Tidal Currents And Langmuir Circulation, Rachel Walker

USF Tampa Graduate Theses and Dissertations

In a shallow shelf region, turbulent motion can have a major effect on coastal processes including ecosystem functioning, surface gas exchange and sediment resuspension. Many factors contribute to such turbulence; wind and wave forcing, buoyancy induced by surface heat fluxes and tidal forcing all play a key role in generating vertical mixing in this shallow region. Alongside these independent sources of turbulence, combinations thereof can lead to full-depth turbulent structures acting secondary to the mean flow and leading to enhanced vertical mixing throughout the entire water column.

Field and laboratory experiments can often prove to be costly and time consuming, …

Teaching About Race In Introductory Anthropology Courses: An Ethnographic Study, Jennifer Gilroy Hunsecker

USF Tampa Graduate Theses and Dissertations

American anthropology has focused on issues related to race from the start of the discipline. From past work designed to categorize humans into phenotype-based categories to current work to undo those categorizations, many anthropologists consider race to be one of the most important topics for students to learn. In this dissertation, I use in-depth ethnographic case studies consisting of interviews, observations, and focus groups, to learn about the way in which anthropologists at four institutions of higher education teach the topic to students in their introductory, four-field general anthropology class. I found that anthropologists are committed to sharing anthropological perspectives …

Clinical And Criminal Justice Outcomes In The Jail Diversion And Trauma Recovery (Jdtr) Program, Daniel Harold Ringhoff

USF Tampa Graduate Theses and Dissertations

This mixed methods study evaluated clinical and criminal justice outcomes of the Florida Jail Diversion and Trauma Recovery (JDTR) program that utilized compensated veteran peer mentors. Quantitative results showed veteran participation in JDTR improved clinical outcomes, such as PTSD symptoms, function difficulty and depression scores, but not criminal justice outcomes such as re-arrest rates. Study limitations, however, prevent the drawing of conclusions regarding the potential effectiveness of veteran peer interventions improving criminal justice outcomes. Qualitative results showed participants overwhelmingly viewed their assigned veteran peer mentor as a "peer" and rated them as "very important" to their future success. Improvements in …

"Now You Know What You're Reaching For...On The Up And Up": An Interpretative Phenomenological Analysis Of Scholar Identity Development Among Black Male Achievers, Coretta Andréa Irby

USF Tampa Graduate Theses and Dissertations

Common discourse concerning the educational trajectories of African American males consists of dismal future outcomes due to defective schooling experiences in kindergarten through twelfth grades. There has been a disregard of counter narratives of high academic achievement and overall school success coupled with a highlighting of failure through deficit-based research practices. Consequently, African American males are positioned as delayed or troubled, which serves to perpetuate educational inequity. This study attempts to increase the scarcity of literature by giving voice to the experiences of high achievement among African American adolescent males attending a school designed to support the achievement of impoverished …

Active Tile Self-Assembly And Simulations Of Computational Systems, Daria Karpenko

USF Tampa Graduate Theses and Dissertations

Algorithmic self-assembly has been an active area of research at the intersection of computer science, chemistry, and mathematics for almost two decades now, motivated by the natural self-assembly mechanism found in DNA and driven by the desire for precise control of nanoscale material manufacture and for the development of nanocomputing and nanorobotics. At the theoretical core of this research is the Abstract Tile Assembly Model (aTAM), the original abstract model of DNA tile self-assembly. Recent advancements in DNA nanotechnology have been made in developing strand displacement mechanisms that could allow DNA tiles to modify themselves during the assembly process by …

Mainstreaming Green Infrastructure: The Nexus Of Infrastructure And Education Using The Green Space Based Learning (Gsbl) Approach For Bioretention Plant Selection, Ryan Charles Robert Locicero

USF Tampa Graduate Theses and Dissertations

The Green Space Based Learning (GSBL) approach builds on a long-term partnership between a Research I university, surrounding community, and local school district, transforming underutilized community green space into an interactive educational tool to addresses national infrastructure and educational challenges. The GSBL approach is an educational platform for engaging K-12 and the local community in engineering design and construction of sustainable Green Infrastructure (GI) projects. GSBL was piloted as a part of a federally funded Research Experience for Teachers (RET) program in which teachers participated in two intensive 6-week summer research experiences and two consecutive academic year components. The summer …

Gene Expression Analysis Of Upregulated Genes By 20-Oh Ecdysone In Brugia Malayi, Monica Lazaro

USF Tampa Graduate Theses and Dissertations

Brugia malayi is a filarial nematode causing lymphatic filariasis in humans characterized by swelling of the lower extremities. The aim of this study was to conduct a real time PCR (qRT-PCR) to verify gene expression levels of Brugia malayi nematodes treated with 20 hydroxyecdysone. Transcriptome analysis was previously performed resulting in the identification of 44 genes that were upregulated by exposure to 20-hydroxyecdysone. Based on transcriptome results, known GO Terms and functions, four genes and one endogenous housekeeping gene were chosen for validation by RT-PCR. Induced samples showed a mean increase of microfilarie by 2.2 fold. Induced wells exhibited a …

Multi-Isotope Analysis To Reconstruct Dietary And Migration Patterns Of An Avar Population From Sajópetri, Hungary, Ad 568-895, Liotta Desiree Noche-Dowdy

USF Tampa Graduate Theses and Dissertations

The Avar were nomadic people from Central Asia who migrated into the Carpathian Basin in Central-Eastern Europe during the mid to late Migration Period (AD 568 - 895). Archaeological evaluation of grave goods and documentation of mortuary practices have been the primary means of understanding the Avar. However, this approach has largely neglected skeletal and biochemical analysis, in particular as these approaches relate to the biological variation, ancestry, and dietary patterns of the Avar.

There remains debate as to whether disparities existed among the socially stratified Avar population of ancient Hungary. It is argued by some that these disparities existed …

Trash Talk: Understanding Food Waste At A Charter Elementary School In Florida, Steven A. Williams

USF Tampa Graduate Theses and Dissertations

Waste as a topic for anthropological investigation has enjoyed a recent resurgence in interest, mirroring burgeoning discussion among policy-makers and the general public about questions of environmental impacts, economic costs, and social detriments of contemporary waste management paradigms. While waste management in the United States has largely focused on technical and organizational solutions typically considered the domain of environmental planning and engineering (such as source reduction, recycling, and reuse), anthropology and the social sciences have become more prominently involved in efforts to inform policy-makers and researchers about the social and behavioral factors influencing waste norms and habits, particularly in educational …

Direct-To-Consumer Messaging: A Phenomenological Examination Of Dtc Best Practices, Nicholas Dominick Fancera

USF Tampa Graduate Theses and Dissertations

This study is designed as the building of a foundation in standardizing best practices when designing Direct-to-Consumer messaging. With this being a new and expanding field of marketing and advertising for the high visibility pharmaceutical industry, an establishment of conceptual templature, around which Direct-to-Consumer messaging campaign can be built, offers an opportunity to build a new and vibrant branch on the well-established messaging field. This is particularly important when recognizing the unique needs and requirements of both the pharmaceutical industry and its audience in learning of and about new products.

This study attempted to identify current perception of Direct-to-Consumer practices …

Fetal Testosterone: Developmental Effects On Externalizing Behavior, Troy A. Webber

USF Tampa Graduate Theses and Dissertations

Fetal testosterone (FT) exposure influences sexual differentiation and may promote well-established sex differences in externalizing (EXT) behavior. Although puberty may be a critical period for these effects, it is unknown how FT exposure influences EXT as a function of pubertal development. We used a longitudinal, multi-sample design to test the relationships between two proxy indices of FT exposure and EXT as a function of age and pubertal development (approximately ages 6, 9, 11, 14, and 16). Twin data were used to approximate FT exposure (TT-FT) because testosterone is thought to cross the intrauterine membrane and cause variability in co-twin gonadal …

Aldehydic C-H Amination Reactions Via Co(Ii)-Based Metalloradical Catalysis And Construction Of Novel Chiral Meso-Amidoporphyrin Ligands, Christopher Lee Lizardi

USF Tampa Graduate Theses and Dissertations

Medium-sized organic ring synthesis poses a seemingly insurmountable challenge, and because of this it is a field under immense investigation. Heterocyclic containing medium-sized rings are common structural motifs in nature, which has caused researchers to investigate their potential biological activity and properties as materials. This research focused on the grand challenge of medium-sized heterocyclic ring synthesis, providing the synthesis community with new tools to generate these highly evasive products, while elucidating energetic and geometric properties of one of Nature's least understood organic ring systems.

Cobalt(II)-Amidoporphyrins, [Co(D₂-Por)], are an emerging class of metalloradical catalysts (MRC) which can facilitate …

Food Insecurity And Hunger Experiences And Their Impact On Food Pantry Clients In The Tampa Bay, Nora Brickhouse Arriola

USF Tampa Graduate Theses and Dissertations

Since 1999, there has been a significant increase in the number of food insecure individuals in the United States. The Great Recession (2007-2009) and slow economic recovery has led to additional increases in rates of food insecurity and the usage of emergency food assistance programs. Thirty qualitative interviews with individuals seeking emergency food assistance at a Tampa Bay food pantry were conducted. Interviews focused on collecting the life experiences of participants, the barriers they face in having food security, their strategies to cope with limited food budgets, and how food insecurity impacts their household's overall health and wellbeing. Recommendations for …

An Experimental Study On Passive Dynamic Walking, Philip Andrew Hatzitheodorou

USF Tampa Graduate Theses and Dissertations

In this study, a previously designed passive dynamic walker (PDW) is built out of aluminum and plastic. The aim of the study was to produce an asymmetrical PDW and to compare the results to a computer simulation to validate the mathematical model. It also aimed at identifying the limitations of using additive manufacturing to create components for a PDW as well as gain insights on asymmetric systems.

Beginning with a five mass kneed model, parameters were varied to produce up to a nine mass kneed model solution. The nine mass model allows more variability in added mass locations and separates …

The Speleogenesis Of Vallgornera Cave (Mallorca, Spain): A Mineralogical And Morphological Study, Jacqueline Amelia Diehl

USF Tampa Graduate Theses and Dissertations

Cova des Pas de Vallgornera (CPV) is morphologically and scientifically, the most prominent karst feature of Mallorca Island (Spain). It consists of over 74 km of passages developed within two carbonate lithologies (reef front and back reef facies) of Upper Miocene age. Two distinct cave patterns are recognized, both tightly controlled by the type of facies; spongework mazes and collapse chambers are characteristic for the reef front unit, whereas linear, fracture-guided galleries develop in the back reef carbonates. CPV is abundantly decorated with a variety of speleothems.

The overarching goal of this study is to provide evidence towards the cave's …

A Natural Case For Realism: Processes, Structures, And Laws, Andrew Michael Winters

USF Tampa Graduate Theses and Dissertations

Recent literature concerning laws of nature highlight the close relationship between general metaphysics and philosophy of science. In particular, a person's theoretical commitments in either have direct implications for her stance on laws. In this dissertation, I argue that an ontic structural realist should be a realist about laws, but only within a non-Whiteheadean process framework. Without the adoption of a process framework, any account of laws the ontic structural realist offers will require metaphysical commitments that are at odds with ontic structural realism. In arguing towards this aim, I adopt an attenuated methodological naturalistic stance to show that traditional …

"In Heaven": Christian Couples' Experiences Of Pregnancy Loss, Grace Ellen Peters

USF Tampa Graduate Theses and Dissertations

This thesis examines how young, married, heterosexual Christian couples talk about and make sense of pregnancy loss, specifically loss before the twentieth week. Studies of pregnancy loss often focus on individual differences in response to pregnancy loss, but this research engages a shared, relational notion of pregnancy loss. Furthermore, this project focuses on Christianity as a tool for making sense of pregnancy loss, not simply a demographic characteristic. I conducted six open-ended interviews with two couples, with one interview together and an individual follow-up interview with each spouse. Following the interviews, I analyzed and interpreted the interview transcripts for symbols …

Landscape Legacies Of Sugarcane Monoculture At Betty's Hope Plantation, Antigua, West Indies, Suzanna M. Pratt

USF Tampa Graduate Theses and Dissertations

Sugarcane cultivation has played a key role in the development of the Caribbean since the seventeenth century A.D. The Eastern Caribbean island of Antigua in the West Indies was almost exclusively dedicated to sugarcane monoculture from the mid-1600s until its independence from Britain in 1981. This research seeks to better understand the landscape legacies left by long-term sugarcane monoculture at the site of Betty's Hope Plantation in Antigua. This study creates a 400-year simulation of crop yields using the USDA's Erosion Productivity Impact Calculator (EPIC), and evaluates the simulated trajectory of landscape change using historical information about the plantation's agricultural …

Myths And Miracles In Mexico City: Treatment Seeking, Language Socialization, And Identity Among Deaf Youth And Their Families, Anne Elaine Pfister

USF Tampa Graduate Theses and Dissertations

This dissertation research investigates the experience of deafness among deaf youth, adults, and their families in Mexico City, Mexico. Deaf children cannot fully access the spoken languages of their hearing families and mainstream society. Hence, participating families embarked upon extensive treatment-seeking pilgrimages, encountering myths about deaf lifeways and the promise of miracle cures that formed Mexico City's cultural system for coping with childhood deafness. This ethnography uncovers persistent misconceptions in medical and mainstream discourse, including strong recommendations against exposure to sign language, which directly impacted participants' access to relevant communities of practice, the social networks that proved most significant to …