Digital Commons Network^™

Model Estimation Of Electric Power Systems By Phasor Measurement Units Data, Yasser Wehbe

USF Tampa Graduate Theses and Dissertations

This dissertation tackles the online estimation of synchronous machines' power subsystems electromechanical models using the output based Phasor Measurements Units (PMUs) data while disregarding any inside data. The research develops state space models

and estimates their parameters and states. The research tests the developed algorithms against models of a higher and of the same complexity as the estimated models.

The dissertation explores two estimations approaches using the PMUs data: i)non-linear Kalman filters namely the Extended Kalman Filter (EKF) and then the Unscented

Kalman Filter (UKF) and ii) Least Squares Estimation (LSE) with Finite Differences (FN) and then with System Identification. …

The Impact Of Socioscientific Issues Based Curriculum Involving Environmental Outdoor Education For Fourth Grade Students, Karey Burek

USF Tampa Graduate Theses and Dissertations

There is a divide between what students are being taught within the science classroom and what they experience out in the real world. This study sought to explore possible relationships between a socioscientific issues embedded curriculum and outcome variables addressing environmental attitude and knowledge, oral and written argumentation and critical thinking skills. Both quantitative and qualitative methods were used to examine both within and between class differences as well as individual differences between the beginning and end of a semester of elementary school. Results indicated that socioscientific issues assist students in developing their critical thinking skills while also providing students …

Federal Neighborhood Stabilization Policy Deployment In Select Florida Jurisdictions, Kevin Carl Mccarthy

USF Tampa Graduate Theses and Dissertations

In 2008 the Federal government enacted a Neighborhood Stabilization Program (NSP) to address the neighborhood effects of the late-2000s foreclosure crisis. Congress subsequently funded a second and third NSP. This research employs mixed methods to examine the effectiveness of the first round of the NSP in three Florida jurisdictions. The results are analyzed within the larger context of substantive housing theory and federal housing policy. The success of the program is evaluated using a mixed-scanning procedural planning theoretical framework.

Hospice Nurses- Attitudes And Knowledge About Pain Management, Amie Jacqueline Miller

USF Tampa Graduate Theses and Dissertations

It has been well established that many people will suffer with pain at the end of life, and untreated pain contributes to reduced quality of life. Many barriers contribute to this issue including a lack of knowledge in nurses who care for dying patients. Many nurses in general practice settings do not possess adequate knowledge about basic pain management principles; and the same may be true about hospice nurses despite the assumption that hospice nurses are more adept at pain management. Contributing to this problem may be the attitudes that nurses, including hospice nurses, have regarding pain and its management. …

Modification Of Trophic Links Between An Omnivore And Macroinfaunal Prey From Sandy Beaches Of Differing Physical Regimes, Kristina Joan Morrow

USF Tampa Graduate Theses and Dissertations

Sandy beach ecosystems have been studied worldwide; however, ecological data are sparse for the extensive barrier islands of Florida. Accordingly, I investigated the feeding patterns of the ghost crab (Ocypode quadrata), a dominant omnivore inhabiting beaches along the Floridian coast. Density data was collected for ghost crabs and swash macroinfaunal prey. In addition, I utilized stable isotopes in conjunction with the mixing models IsoSource and SIAR to characterize diets of ghost crabs across three barrier islands in spring and summer 2011. Results showed that ghost crabs at Cayo Costa feed primarily on swash macroinfauna, while those from Anclote Key shifted …

Hamiltonian Sets Of Polygonal Paths In 4-Valent Spatial Graphs, Tilahun Abay Muche

USF Tampa Graduate Theses and Dissertations

Spatial graphs with 4–valent rigid vertices and two single valent endpoints, called assembly graphs, model DNA recombination processes that appear in certain species of ciliates. Recombined genes are modeled by certain types of paths in an assembly graph that make a ”oper pendicular ” turn at each 4–valent vertex of the graph called polygonal paths. The assembly number of an assembly graph is the minimum number of polygonal paths that visit each vertex exactly once. In particular, an assembly graph is called realizable if the graph has a Hamiltonian polygonal path.

An assembly graph ɣ^{^} obtained from a given …

Live Versus Recorded: Exploring Television Sales Presentations, Christopher Craig Novak

USF Tampa Graduate Theses and Dissertations

Abstract

This is an exploratory study that poses the questions and discussion regarding live and recorded sales presentations via television. With its rich history, it appears that live television has more types of appeal that will get the shopper buying products. However, the recorded and edited presentation played back on television has had its share to grab the shopper's attention. Research questions are presented to determine which broadcasting method is stronger by examining factors related to home shopping such as credibility, authenticity, involvement, urgency, informativeness, entertaining value, sense of real time, spontaneity and interactivity. Additional questions will look at the …

Sellars In Context: An Analysis Of Wilfrid Sellars's Early Works, Peter Jackson Olen

USF Tampa Graduate Theses and Dissertations

Although Wilfrid Sellars's work holds a prominent place in recent analytic philosophy, little work has been done to situate his early approaches to normativity and the philosophy of language in their proper context. What little work has been done tends to emphasize Sellars's connection to a then dominant logical empiricism at the expense of marginalizing other American philosophical schools. On top of this historical issue, most scholars attempting to explain Sellars's systematic philosophy tend to ignore a developmental picture of Sellars's positions and focus on explicating the systematic character of his thought. My dissertation attempts to correct both of these …

The New Materialism: Althusser, Badiou, And Zizek, Geoffrey Dennis Pfeifer

USF Tampa Graduate Theses and Dissertations

This dissertation traces the post-Marxist and materialist positions of two leading contemporary European thinkers: Slavoj Zizek and Alain Badiou. These thinkers, I argue, collectively offer a way between the traditional Hegelian Marxist's overarching meta-narrative of a necessary evolution from worse to better, and the post-modern pessimism of a lack of possibility for such a social evolution. It is this middle path, offered by these two thinkers, that this dissertation seeks to explore and further explain. The focal point of this dissertation is the type of philosophical materialism that is collectively offered by Badiou and Zizek, what I call the "New …

Statistical Content In Middle Grades Mathematics Textbooks, Maria Consuelo (Suzie) Capiral Pickle

USF Tampa Graduate Theses and Dissertations

Statistical Content in Middle Grades Mathematics Textbooks

Maria Consuelo (Suzie) Capiral Pickle

Abstract

This study analyzed the treatment and scope of

statistical concepts in four, widely-used, contemporary, middle

grades mathematics textbook series: Glencoe Math Connects,

Prentice Hall Mathematics, Connected Mathematics Project, and

University of Chicago School Mathematics Project. There were

three phases for the data analysis. Phase 1 addressed the location

and sequence of the statistical concepts. Phase 2 focused upon an

examination of the lesson narrative, its components and scope.

Phase 3 analyzed the level of cognitive demand required of the

students to complete the exercises, and the total …

Occupational Stressors Among Providers Of Hiv Prevention And Support Services, Mackenzie Kaye Rapp

USF Tampa Graduate Theses and Dissertations

Much literature has documented the high levels of burnout, stress, and grief in HIV physicians and nurses due to the challenging nature of the chronic, fatal disease with which they deal on a daily basis. Providers of social and HIV prevention services face similar challenges while working with stigmatized, terminally ill clients. However, since these latter occupations deal with social, rather than clinical interventions, their experiences may differ from those of medical personnel. Through open-ended interviews with HIV counselors, educators, case managers, and outreach workers, this exploratory study assesses the occupational stressors of providers of social and HIV prevention services …

The Effect Of Mortgage Liberalization On Housing Patterns In Tampa Bay, Jason Richardson

USF Tampa Graduate Theses and Dissertations

This study seeks to determine whether the process of mortgage finance liberalization, manifested in concurrent activities of securitization, deregulation, and neo-liberal policy, have resulted in changes to the tenure of residents in neighborhoods in Tampa Bay. It makes use of existing literature on gentrification and mortgage finance and compares those findings with three sample neighborhoods in and around the city of Tampa. To do so the thesis employs data collected from lenders pursuant to the Home Mortgage Disclosure Act, court records of sales and mortgages filed with the Clerk of the Circuit Court of Hillsborough County, and interviews with stakeholders …

The Biomechanics Of Tongue Projection In The Frog _Rana Pipiens_: Dynamics And Temperature Effects, Paula Sandusky

USF Tampa Graduate Theses and Dissertations

Ectotherms such as frogs must either function within environments with temperatures amenable to their physiological needs, or find means to reduce the impact of temperature on their activities. Recent studies on reptile and amphibian feeding have shown convergent use of elastic recoil to drive feeding movements, thereby decoupling temperature's effects on muscle from movement and allowing the animals to feed over broader temperature ranges. Rana pipiens specimens (n=5) were exposed to three ambient temperatures (10°, 15°, and 25° C) at which feeding behavior was imaged at 6000 Hz. The image sequences yielded detailed kinematic and dynamic information for jaw, tongue, …

Sugar Consumption And Cognitive Aging In The Swedish Adoption/Twin Study Of Aging, Shyam Seetharaman

USF Tampa Graduate Theses and Dissertations

Abstract

Consumption of foods high in sugar content has been linked with the development of metabolic abnormalities such as cardiovascular disease and type II diabetes, major sources of global health concerns. Although the detrimental consequences of high intake of sugar on abnormal metabolic processes are established, it is not known how this association affects (or accelerates) cognitive aging.

The current project was based on data from the Swedish Adoption/Twin Study of Aging (SATSA) to test the hypothesis that high refined sugar intake contributes to accelerated trajectories of cognitive decline assessed longitudinally. Trajectories of cognitive change were assessed as a function …

A Head Start To Learning: Exploration Of A Parent-Directed Intervention To Promote Early Literacy Skill Development, Ashley Nicole Sundman-Wheat

USF Tampa Graduate Theses and Dissertations

This study examined the effects of a parent-led intervention focused on developing children's early literacy skills within the home setting. The lesson plans contain scripted steps for completing activities to teach letter names and phonological awareness skills. Archival data were analyzed from a study conducted with 26 families from three Head Start centers. Thirteen families completed the intervention and thirteen families were enrolled in a control condition which provided information on shared reading strategies. Children in the intervention group performed at statistically significant higher levels on measures of letter naming, phonological awareness, vocabulary/oral language, and comprehension. Parents rated both the …

On The Development Of The Extradosed Bridge Concept, Steven Lynn Stroh

USF Tampa Graduate Theses and Dissertations

The Extradosed Prestressed Bridge represents a relatively new bridge type. The first of this type bridge was constructed in Japan in 1994, and Japan has since built at least 29 examples of this bridge type. Throughout the rest of the world, another 34 of this bridge type have been built, with most countries having only one, or at most a few, examples. A broader application of this bridge type has been hampered by lack of design information and in particular lack design criteria for the stay cables. The purpose of this dissertation is to progress the understanding and application of …

An Interactive Guide To Self-Discovery For Women, Elaine J. Taylor

USF Tampa Graduate Theses and Dissertations

This project is a translation of ideas I have encountered in my journey through Women's Studies. With this interactive book, I offer a concise, understandable, and empowering method for self-discovery from one feminist's perspective. Traditional self-help materials often set the reader up as the one with the issue or problem and they rarely call out the functioning systems of oppression as a stumbling block or offer ways to circumvent them. With this project, I hope to shine light on the functioning systems of gender discrimination, racism, classism, and heterosexism, and to provide a framework for understanding. There are three main …

Analysis And Remediation Of Chlorinated Hydrocarbons In Environmental Media, Jonathan Ticknor

USF Tampa Graduate Theses and Dissertations

The two objectives of this work were to develop a simplified method for the analysis of chlorinated organics in water samples and to improve an existing soil remediation technology. The contaminants considered for these studies were chlorinated hydrocarbons because of their relative frequency of appearance at contaminated sites. The first half of this study involved the analysis of chlorinated ethenes by gas chromatography with flame ionization detection (GC-FID). I tested the hypothesis that the FID response factor is the same for all chlorinated ethene compounds. The rationale for this investigation is that if the hypothesis is correct, a single calibration …

The Mediating Role Of Regulatory Focus In The Relationship Between Transformational/Transactional Leadership And Follower Work Outcomes, Erin J. Walker

USF Tampa Graduate Theses and Dissertations

The purpose of this research was to integrate the areas of leadership and motivation by examining how leaders' behaviors affect their followers' regulatory foci. Specifically, a separate laboratory experiment and field survey were conducted to determine whether leader transformational and transactional behaviors shape followers' work-based promotion and prevention regulatory foci, which in turn affect followers' outcomes at work. Overall, there was limited evidence that inspirational motivation and contingent reward leader behaviors were related to follower work-based regulatory focus, and work-based regulatory focus was related to several work-related outcomes. The moderating role of chronic regulatory focus on the relationship between leader …

Catalytic Tri-Reforming Of Biomass-Derived Syngas To Produce Desired H2:Co Ratios For Fuel Applications, Devin Mason Walker

USF Tampa Graduate Theses and Dissertations

This study focuses on upgrading biomass derived syngas for the synthesis of liquid fuels using Fischer-Tropsch synthesis (FTS). The process includes novel gasification of biomass via a tri-reforming process which involves a synergetic combination of CO2 reforming, steam reforming, and partial oxidation of methane. Typical biomass-derived syngas H2:CO is 1:1 and contains tars that deactivate FT catalyst. This innovation allows for cost-effective one-step production of syngas in the required H2:CO of 2:1 with reduction of tars for use in the FTS. To maximize the performance of the tri-reforming catalyst, an attempt to control oxygen mobility, thermal stability, dispersion of metal, …

Mapping And Assessing Urban Impervious Areas Using Multiple Endmember Spectral Mixture Analysis: A Case Study In The City Of Tampa, Florida, Fenqing Weng

USF Tampa Graduate Theses and Dissertations

The advance in remote sensing technology helps people more easily assess urban growth. In this study, the utility of multiple endmember spectral mixture analysis (MESMA) is examined in a sub-pixel analysis of Landsat Thematic Mapper (TM) imagery to map urban physical components in Tampa, FL. The three physical components of urban land cover (LC): impervious surface, vegetation and soil, were compared using the proposed MESMA with a traditional spectral mixture analysis (SMA). MESMA decomposes each pixel to address the heterogeneity of urban LC characteristic by allowing the number and types of endmembers to vary on a per pixel basis. This …

Selling The Third Wave: The Commodification And Consumption Of The Flat Track Roller Girl, Mary Catherine Whitlock

USF Tampa Graduate Theses and Dissertations

In an ethnographic examination of the "modern" roller derby movement that began in the early 2000s, I explore Women's Flat Track Derby in Florida. What does it mean to be a roller derby player? How is she conceptualized and commodified? Or more centrally, how is third wave feminism used as a catalyst of this commodification? In order to fully appreciate, understand, and even embrace roller derby, I look at roller derby leagues as social movement organizations (SMOs) in order to note how they frame themselves and maintain collective identity the commodification of third wave feminism. First, I will explore various …

Evaluation Of Repeated Biomarkers: Non-Parametric Comparison Of Areas Under The Receiver Operating Curve Between Correlated Groups Using An Optimal Weighting Scheme, Ping Xu

USF Tampa Graduate Theses and Dissertations

Receiver Operating Characteristic (ROC) curves are often used to evaluate the prognostic performance of a continuous biomarker. In a previous research, a non-parametric ROC approach was introduced to compare two biomarkers with repeated measurements. An asymptotically normal statistic, which contains the subject-specific weights, was developed to estimate the areas under the ROC curve of biomarkers. Although two weighting schemes were suggested to be optimal when the within subject correlation is 1 or 0 by the previous study, the universal optimal weight was not determined. We modify this asymptotical statistic to compare AUCs between two correlated groups and propose a solution …

The Mediating Effect Of Distress Caused By Constipation On Predictors Of Quality Of Life Of Hospice Patients With Cancer., Abdel Alkhalouf

USF Tampa Graduate Theses and Dissertations

Abstract

The Mediating Effect of Distress Caused by Constipation on Predictors of Quality of Life of Hospice Patients with Cancer.

Key positive outcomes for hospice patients include the prevention and alleviation of physical and psychological distress, maintenance of physical and mental functioning and all aspects of quality of life. This research used secondary analysis of previously gathered data to answer new research questions with alternative strategies to examine relationships not previously analyzed. The researchers collected data from 717 cancer patients who had been admitted to one of two private hospices. The aim of their experimental intervention was to define the …

Theory And Modeling Of Graphene And Single Molecule Devices, Lyudmyla Adamska

USF Tampa Graduate Theses and Dissertations

This dissertation research is focused on first principles studies of graphene and single organic molecules for nanoelectronics applications. These nanosized objects attracted considerable interest from the scientific community due to their promise to serve as building blocks of nanoelectronic devices with low power consumption, high stability, rich functionality, scalability, and unique potentials for device integration. Both graphene electronics and molecular electronics pursue the same goal by using two different approaches: top-down approach for graphene devices scaling to smaller and smaller dimensions, and bottom-up approach for single molecule devices. One of the goals of this PhD research is to apply first-principles …

Resisting Criminalization Through Moses House: An Engaged Ethnography, Lance Arney

USF Tampa Graduate Theses and Dissertations

Neoliberal restructuring of the state has had destructive effects on families and children living in urban poverty, compelling them to adapt to the loss of social welfare and demolition of the public sphere by submitting to new forms of surveillance and disciplining of their individual behavior. A carceral-welfare state apparatus now confines and controls the bodies of expendable laborers in urban spaces, containing their threat to the neoliberal socioeconomic order through criminalization and workfare assistance, resulting in a new symbiosis of prison and ghetto. The resulting structures of punishment, police surveillance, and criminalization primarily surround African Americans living in high …

Becoming The Corporate Native...Virtually: An Ethnography And Corporate Culture Assessment Of A Virtual Organization, Jennifer Laurel Avery

USF Tampa Graduate Theses and Dissertations

This dissertation presents an investigation of a rarely studied business entity in the cross disciplinary literature on organizational culture, a completely virtually organized firm. Subscribing to a conviction that any culture can only be understood through an approach that uncovers the lived experiences of its members, I employ the traditional anthropological method of participant observation as my foundational data gathering technique. In an effort to help engage anthropology with the cross disciplinary organizational culture literature generally, I also use two well-known methods of corporate culture assessment from the management sciences. I provide a number of recommendations to the sponsors of …

Paleo-Indian To Spanish Occupation Around Choctawhatchee Bay, Northwest Florida, As Documented In A Private Artifact Collection, Deena Woodward

USF Tampa Graduate Theses and Dissertations

This project documents and analyzes a substantial private collection of artifacts from archaeological sites around Choctawhatchee Bay, northwest Florida. The goals are to determine what the materials can contribute to the archaeological record, how they enhance our knowledge of the people who lived there over the past 2000 years, and how this information can be used to expand or contradict models of prehistoric lifeways in this region. This is done by comparing artifact assemblages, looking at site distribution patterns, and using pXRF trace-element analysis to compare Late Archaic clay objects with those from elsewhere along the Gulf.

Examination of the …

Perceptions Of Hispanic Female Esl Students Toward First-Year College Writing Courses: A Phenomenological Examination Of Cultural Influences, Barbara B. Booker

USF Tampa Graduate Theses and Dissertations

The role of culture as a phenomenon guided this qualitative study, which examined the influence of diverse Hispanic cultures on the attitudes and perceptions towards college writing courses of female Hispanic students who are non-native speakers of English. With the increasing number of Hispanic immigrants coming to the U.S., the minority student population at our nation's colleges and universities has also risen. Community colleges have become the means through which many of these Hispanic immigrants obtain a college education.

The eight women who participated in this study self-identified as Hispanic. All were first generation college students who had been born …

An Exploratory Study Of Reception Of Organizational Citizenship Behaviors And Work Related Outcomes: It Is Good For Your Co-Workers, Xinxuan Che

USF Tampa Graduate Theses and Dissertations

The predictors of organizational citizenship behavior (OCB) - performance that supports the social and psychological environment in which task performance takes place - have been studied extensively in previous research. Surprisingly, only a few studies have looked into OCB's effects on individuals who might benefit from it. The purpose of the current study was to explore effects of individual-level OCB on its recipients. Reception of OCB (ROCB) is described and proposed to be related to targets' performance, job stress and job strains. In addition, narcissism and proactive personality were explored as predictors of reception of OCB also as moderators of …