Digital Commons Network^™

The Role Of Contextual Associations In The Selection Of Objects, Noah Patrick Sulman

USF Tampa Graduate Theses and Dissertations

This paper describes a sequence of experiments addressing basic questions about the control of visual attention and the relationship between attention and object recognition. This work reviews compelling findings addressing attentional control on the basis of high-level perceptual properties. In five experiments observers were presented with a rapid sequence of object photographs and instructed to either detect or selectively encode a verbally cued object category. When these object categories (e.g. "baseball") were preceded by contextual images associated with a given object category (e.g. "baseball diamond"), observers were less likely to accurately report information about the target item. This effect obtained …

The Abjection Of The Pythia, Alaina Dyann Tackitt

USF Tampa Graduate Theses and Dissertations

Recent academic research has garnered considerable popular interest on the matter of whether the Pythia, the Oracle of Delphi, was high. Current findings aim to prove that vapors emitted from beneath the tripod on which the Pythia prophesied were intoxicating, thereby causing her frenzied state and statements. Contemporary scientists’ intense interest in proving that the Pythia was not prophetic evokes the question of why the once widely accepted, now generally rejected, idea that a female body can serve as a vessel for the words of the immortal deity holds such significance for modern science. When this curiosity is considered in …

Asymmetric Passive Dynamic Walker Used To Examine Gait Rehabilitation Methods, John Sushko

USF Tampa Graduate Theses and Dissertations

Testing gait rehabilitation devices on humans can be a difficult task, due to the effects of the neurological controls of the human body. This thesis advances the use of a passive dynamic walker (PDW) tuned to have asymmetric gait patterns similar to those with physical impairments to test rehabilitation devices. A passive dynamic walker is a multipendulum system that has a stable gait pattern when walking down a slope without any energy inputs except the forces due to gravity. A PDW model is better suited for testing rehabilitation devices because it has been shown to resemble human gait and separates …

Growing Up With Hiv: Disease Management Among Perinatally Infected Adolescents, Barbara J. Szelag

USF Tampa Graduate Theses and Dissertations

Children born with HIV in the 1980s and 1990s are surviving into adolescence and adulthood, due to the availability of highly active antiretroviral therapy (HAART). Growing up with a chronic and stigmatized disease presents considerable challenges as young people explore their sexuality, develop relationships, and take steps to become independent and productive adults. Adherence to HAART is an essential and life-long practice for the maintenance of health and longevity. For adolescents born with HIV, a daily medication schedule is one aspect of disease management that also includes medical visits, HIV status acceptance, bouts of illness, and disclosure of HIV status …

Global Leadership In Higher Education Administration: Perspectives On Internationalization By University Presidents, Vice-Presidents And Deans, Janice Sullivan

USF Tampa Graduate Theses and Dissertations

The purpose of the study was to identify international university administrators' perspectives on organizational strategies to support higher education internationalization. Internationalization is the conscious effort to integrate international, intercultural, and global dimensions into the ethos and outcomes of higher education (NAFSA, 2008). A descriptive survey design method was used and the instrument entitled "Strategic Internationalization Priority Scale" was developed for this research. This study is quantitative and cross-sectional. The online survey was sent to 1,043 top university administrators at 149 universities in 50 countries. These universities had active international agreements with the University of South Florida at the time of …

Ethnic Identities Among Second-Generation Haitian Young Adults In Tampa Bay, Florida: An Analysis Of The Reported Influence Of Ethnic Organizational Involvement On Disaster Response After The Earthquake Of 2010, Herrica Telus

USF Tampa Graduate Theses and Dissertations

Drawing upon 20 in-depth interviews with second generation Haitian young adults, I examined the ethnic identities and the involvement in ethnic organizations of the respondents. This study pays particular attention to how involvement in ethnic organizations influenced how the second generation Haitians believed the earthquake affected their identities and how they ultimately responded to the earthquake. Several of the findings revealed differences in how and why the respondents chose to ethnically identify such as Haitian, Haitian-American, black Haitian. The respondents' choice to join an ethnic organization was driven by different desires but the perceived influence of the organization on their …

Revision And Validation Of A Culturally-Adapted Online Instructional Module Using Edmundson's Cap Model: A Dbr Study, Marie A. Tapanes

USF Tampa Graduate Theses and Dissertations

In the present study, the Cultural Adaptation Process Model was applied to an online module to include adaptations responsive to the online students’ culturallyinfluenced learning styles and preferences. The purpose was to provide the online learners with a variety of course material presentations, where the e-learners had the opportunity to select their preferred structure for learning. The research methodology for the study is Design-Based Research (DBR), which has been identified by many prominent researchers in Instructional Technology as the most productive research approach for the field. DBR integrates different data types and data collection methods (quantitative, qualitative, and mixed) with …

People In Between: The Value Of Life Stories In Exploring The Needs Of Colombian Asylum Seekers, Poonam R. Valliappan

USF Tampa Graduate Theses and Dissertations

The long, protracted civil war, spanning nearly fifty years, in the South American nation of Colombia has displaced almost four million civilians in as much time. Tens of thousands of refugees were resettled in Ecuador, Panama, Venezuela and other neighboring countries. Some, still threatened in their country of first asylum, and resettled to the United States (US) with their families, must learn to navigate the often complex systems of life and living in America. Resettlement programs that focus primarily on immediate needs such as employment and accommodations are aware of the growing need for more long&ndashterm assistance. However, while there …

A Discrete-Continuous Modeling Framework For Long-Distance, Leisure Travel Demand Analysis, Caleb Van Nostrand

USF Tampa Graduate Theses and Dissertations

This study contributes to the literature on national long-distance travel demand modeling by providing an analysis of households' annual destination choices and time allocation patterns for long-distance leisure travel purposes. An annual vacation destination choice and time allocation model is formulated to simultaneously predict the different destinations that a household visits and the time it spends on each of these visited destinations, in a year. The model takes the form of a Multiple Discrete-Continuous Extreme Value (MDCEV) structure (Bhat, 2005; Bhat, 2008). The model assumes that households allocate their annual vacation time to visit one or more destinations in a …

Lo Barroco Lezamesco En Paradiso, Leonardo Venta

USF Tampa Graduate Theses and Dissertations

In this thesis I argue that José Lezama Lima's Paradiso is unique among Latin-American novels of the 1960s because it is a hybrid of literary genres - narrative and essay, as well as a "poetic system." Through an open literary framework, the author explores the essence of "cubanía" though language that is both colloquial and elaborate, both devoted to traditions and aiming for transgressions: a novel that reaches for the pinnacle of neobaroque prose. To sustain my argument, I have performed an exhaustive exegesis of my primary text, as well as extensive external research in secondary texts of the highest …

Simplified Methodology For Designing Parabolic Trough Solar Power Plants, Ricardo Vasquez Padilla

USF Tampa Graduate Theses and Dissertations

The performance of parabolic trough based solar power plants over the last 25 years has proven that this technology is an excellent alternative for the commercial power industry. Compared to conventional power plants, parabolic trough solar power plants produce significantly lower levels of carbon dioxide, although additional research is required to bring the cost of concentrator solar plants to a competitive level. The cost reduction is focused on three areas: thermodynamic efficiency improvements by research and development, scaling up of the unit size, and mass production of the equipment. The optimum design, performance simulation and cost analysis of the parabolic …

Probing Molecules In Confined Space, Carissa Marie Vetromile

USF Tampa Graduate Theses and Dissertations

Despite the plethora of information regarding cellular crowding and its importance on modulating protein function the effects of confinement on biological molecules are often overlooked when investigating their physiological function. Recently however, the encapsulation of biomolecules in solid state matrices (NafionTM, sol-gels, zirconium phosphate,etc.) has increased in importance as a method for examining protein conformation and dynamics in confined space as well as novel applications in biotechnology. Biotechnological applications include, but are not limited to, bioremediation, biosensors, biocatalysts, etc. In order to better utilize solid state materials as substrates for biological molecules an understanding of the effects of encapsulation on …

Narratives Of Architectural Revolution In Online Christian Rhetoric, Quentin David Vieregge

USF Tampa Graduate Theses and Dissertations

This dissertation examines how online Christian communities reconcile the democratizing, anti-hegemonic effects of dialogic web tools, such as wikis, blogs, and video-sharing sites with the authoritarian characteristics of some organized religions. In the first chapter, I discuss technodeterminism and what I call the theme of "revolutionary architectures" in digital humanities scholarship. This theme occurs in narratives that assume that a new interface, Internet tool, or type of coding will redefine the rhetorical relationship between writers, readers, and site administrators, usually in a benevolent way. I argue that scholars within the field of Computers and Composition use narratives of architectural revolution …

The Time Machine And Heart Of Darkness: H.G. Wells, Joseph Conrad, And The Fin De Siecle, Haili Ann Vinson

USF Tampa Graduate Theses and Dissertations

Much work has been done on the relationship between fin de siècle authors H.G. Wells, Joseph Conrad, Henry James, Stephen Crane, and Ford Madox Ford. As Nicholas Delbanco explains, these writers lived closely to one another in Kent during the transition into the Twentieth Century. While scholars have stressed the collaboration between Conrad and Ford and the disagreements between Wells and James, fewer have treated the relationship of Wells and Conrad. Their most widely read works, The Time Machine and Heart of Darkness, share remarkable similarities that reveal common topical influences on both writers. Furthermore, I argue that Wells …

Life And Death Journeys: Medical Travel, Cancer, And Children In Argentina, Cecilia Vindrola Padros

USF Tampa Graduate Theses and Dissertations

Recent studies on the Argentine public health system have demonstrated that the lack of medical resources in different parts of the country force pediatric oncology patients and their family members to travel to Buenos Aires in order to access care. This internal migration poses difficulties for these families as travel and resettlement are expensive, lead to the separation of family members, and interrupt the child's schooling. This dissertation was designed to document the everyday life experiences of traveling families in order to understand the barriers they faced while attempting to access medical treatment and the strategies they used to surmount …

Modeling Direct Runoff Hydrographs With The Surge Function, Denis Voytenko

USF Tampa Graduate Theses and Dissertations

A surge function is a mathematical function of the form f(x)=ax^pe^-bx. We simplify the surge function by holding p constant at 1 and investigate the simplified form as a potential model to represent the full peak of a stream discharge hydrograph. The previously studied Weibull and gamma distributions are included for comparison. We develop an analysis algorithm which produces the best-fit parameters for every peak for each model function, and we process the data with a MATLAB script that uses spectral analysis to filter year-long, 15-minute, stream-discharge data sets. The filtering is necessary to locate the …

Assessment Of Fertility Potential In Bottlenose Dolphins (Tursiops Truncatus): An Elisa-Based Biomarker Analysis, Leslie Schwierzke Wade

USF Tampa Graduate Theses and Dissertations

As apex predators in coastal systems, bottlenose dolphins (Tursiops truncatus) are susceptible to persistent organic pollutant (POP) accumulation and retention over time, which has prompted continued interest in understanding the extent to which contaminant body burdens or other stressors are sufficient to cause adverse sublethal effects on energetic fitness, immune function, or reproduction. Increasing our knowledge of reproductive endocrinology in bottlenose dolphins may provide insight into changes in reproductive rates, thereby expanding the capacity to assess conservation status. This study used the Enzyme-Linked ImmunoSorbent Assay (ELISA) technique to examine peptide fertility hormones [inhibin A, inhibin B and anti-Müllerian …

Dynamics Of Stony Coral Assemblages On Patch Reefs Of The Upper Florida Reef Tract, Including Biscayne National Park, Amy Wallace

USF Tampa Graduate Theses and Dissertations

The patch reefs located in Biscayne National Park (BNP) are some of the most northern reefs of the Florida reef system. The focus of my study is seven patch reefs that were first surveyed annually between 1977 and 1981, revealing 8% - 28% cover by scleractinian corals. An assessment of BNP patch reefs completed in 2000 reported that coral cover had decreased to approximately 0.4% - 10%. The once dominant species in the Florida reef tract, Acropora palmata and A. cervicornis, have rapidly declined over time and were not found in any transects during the 2000 survey.

This study is …

Celestial Bodies, Jared Calvin White

USF Tampa Graduate Theses and Dissertations

The following is a collection of original poetry written over a span of three years while attending the University of South Florida. The poetry is divided into five numbered sections, marking the major thematic divisions. Preceding the poetry is a critical introduction to the work that outlines the author's developing thematic ideology.

Sharps Injuries In Medical Training: Higher Risk For Residents Than For Medical Students, Rachel Williams

USF Tampa Graduate Theses and Dissertations

Because of their relative inexperience in performing procedures and handling sharps devices, medical students and resident physicians are considered to be at high risk for sharps injuries. A higher rate of sharps injuries for medical trainees implies a higher risk for occupationally-acquired infection with bloodborne pathogens and may have financial and legal implications for training institutions. This study examines the prevalence of sharps injuries among US medical students and resident physicians. A systematic review of the literature yielded 10 studies that gave data on sharps injuries for US medical students or residents, and those data were combined with data from …

Understanding The Cultivation Of Teacher Leadership In Professional Learning Communities, Adrianne G. Wilson

USF Tampa Graduate Theses and Dissertations

The purpose of study was twofold. The primary purpose was to describe and explain the perceptions and lived experiences of high school teachers through their involvement in a Professional Learning Community, as defined by Hord (1997). Teachers' experiences within a Professional Learning Community were examined for patterns of cultivated leadership and social capital. The second purpose of the study was to identify the influencing variables connected with how the participants viewed themselves as leaders as a result of their participation in a professional learning community. One influencing variable in particular that was examined was the influence of social capital in …

Statistical Models For Environmental And Health Sciences, Yong Xu

USF Tampa Graduate Theses and Dissertations

Statistical analysis and modeling are useful for understanding the behavior of different phenomena. In this study we will focus on two areas of applications: Global warming and cancer research. Global Warming is one of the major environmental challenge people face nowadays and cancer is one of the major health problem that people need to solve.

For Global Warming, we are interest to do research on two major contributable variables: Carbon dioxide (CO2) and atmosphere temperature. We will model carbon dioxide in the atmosphere data with a system of differential equations. We will develop a differential equation for each of six …

The Influence Of Time Spent By Students Engaged In Co-Curricular Involvement, Online Social Networking And Studying And Doing Coursework On Their Academic Achievement, Regina Young Hyatt

USF Tampa Graduate Theses and Dissertations

The purpose of this study was to understand the relationship between time spent by students engaged in student co-curricular involvement, online social networking, and studying on their academic achievement. Additional factors such as student residence, gender, ethnicity, class standing and work for pay were also considered. Existing literature supports the concept that the more time students spend in educationally purposeful activities, the more likely students are going to be successful. Little research exists regarding the use of current versions of online social networking, and the relationship it might have to student academic achievement as measured by grade point average. Therefore, …

Sex And The Seas: Gene Transfer Agents, Elizabeth Young

USF Tampa Graduate Theses and Dissertations

Gene Transfer Agents (GTAs) are phage-like pthesiss that are produced by many alpha proteobacteria in late stationary growth phase and are capable of transferring chromosomal genes (termed "constitutive transduction"). Examination of alpha proteobacterial genomic sequences indicated widespread occurrence of GTA-like elements. The goal of this study was to investigate gene transfer potential of GTAs of marine alpha proteobacteria in culture as well as in natural marine environments. Another goal was to determine the potential of bacterial symbionts from zooxanthellae and coral to genetically transfer beneficial properties between symbionts. Ruegeria mobilis (ID 45A6) was isolated from cultures of the coral endosymbiotic …

The Evaluation Of Hybrid Slurry Resulting From The Introduction Of Additives To Mineral Slurries, Kyle Douglas Yeasting

USF Tampa Graduate Theses and Dissertations

Drilled shaft construction often requires the use of drill slurry to maintain borehole stability during excavation and concreting. While drill slurry may be composed of fluids ranging from air to petroleum, drilled shaft construction typically makes use of water based drilling fluids. Although clean water may be utilized as a drilling fluid, a premixed slurry consisting of water, minerals, and/or polymers is more commonly used. Florida Department of Transportation (FDOT) specifications require the use of mineral slurry for all primary structures. The slurry resists the intrusion of groundwater, slows the outward migration of drilling fluid from the excavation, and aids …

Self-Efficacy In Music Performance: Measuring The Sources Among Secondary School Music Students, Michael S. Zelenak

USF Tampa Graduate Theses and Dissertations

The purpose of this study was to develop a greater understanding of self-efficacy in music performance. I sought to (a) contribute to fundamental knowledge of self-efficacy in music performance, (b) determine whether scores from the Music Performance Self-Efficacy Scale (MPSES) were valid and reliable, and (c) provide insights for developing self-efficacy among secondary school music students. Participants (N = 290) were middle and high school students in band, chorus, and string orchestra ensembles from 10 schools in the southeast and western regions of the United States. Participants completed four online questionnaires: (a) Music Performance Self-Efficacy Scale, (b) Sources of Middle …

Addressing The Decline Of Academic Performance Among First-Year Composition Students: A Usability Analysis Of Two Important Online Resources, Kate Zephyrhawke

USF Tampa Graduate Theses and Dissertations

An increasing number of students entering college lack the academic skills necessary to perform well at the college level, forcing professors and academic institutions to lower standards. Students approach higher education as a commodity, and as consumers they assert their desire for easier course work by giving poor evaluations to instructors whose courses they find too demanding or difficult. Eliminating student evaluations is one necessary change that will help reverse declining standards in higher education and increase performance; providing effective venues for supplemental instruction is another. Teaching basic writing skills in freshman composition courses would waste valuable instruction time that …

An Examination Of The Impacts Of Urbanization On Green Space Access And Water Resources: A Developed And Developing World Perspective, Heather E. Wright Wendel

USF Tampa Graduate Theses and Dissertations

This dissertation addresses the impact of urbanization and land use change on the availability and accessibility of two urban amenities that are often inequitably distributed: green space and water features. Diverse methodologies were utilized in order to gain a better understanding of the role of these amenities in improving urban quality of life and integrated water management. Using an interdisciplinary approach, this research provides a unique perspective within both a developed and developing world context by evaluating aspects of urbanization to emphasize more sustainable and integrated approaches to development.

A preliminary analysis highlights potential drivers of green space revitalization in …

Alternative Statistical Methods For Analyzing Geological Phenomena: Bridging The Gap Between Scientific Disciplines, Joseph Frank Van Gaalen

USF Tampa Graduate Theses and Dissertations

When we consider the nature of the scientific community in conjunction with a sense of typical economic circumstances we find that there are two distinct paths for development. One path involves hypothesis testing and evolution of strategies that are linked with iterations in equipment advances. A second, more complicated scenario, can involve external influences whether economic, political, or otherwise, such as the government closure of NASA's space program in 2011 which will no doubt influence research in associated fields. The following chapters are an account of examples of two statistical techniques and the importance of both on the two relatively …

A Mixed Method Study On The Peripartum Experience And Postpartum Effects Of Emergency Hysterectomy Due To Postpartum Hemorrhage, Cara De La Cruz

USF Tampa Graduate Theses and Dissertations

Background: Little is known about the experience and psychological outcomes for women who experience emergency peripartum hysterectomy (EPH). The objective of this study was to explore women's experiences of EPH and to determine if women who experience EPH were more likely to experience mental health sequelae.

Methods: This mixed method design involved a quantitative and a qualitative phase. The quantitative phase used a retrospective cohort design. Women were sampled through on-line communities, including an EPH support group, and a larger website for mothers. Women completed on-line surveys covering sociodemographic, obstetric/gynecological/ and psychiatric information, including screens for depression and Post-Traumatic Stress …