Arts and Humanities Commons^™

Study On Crash Characteristics And Injury Severity At Roadway Work Zones, Qing Wang

USF Tampa Graduate Theses and Dissertations

In USA, despite recent efforts to improve work zone safety, the number of crashes and fatalities at work zones has increased continuously over several past years. For addressing the existing safety problems, a clear understanding of the characteristics of work zone crashes is necessary. This thesis summarized a research study focusing on work zone traffic crash analysis to investigate the characteristics of work zone crashes and to identify the factors contributing to injury severity at work zones. These factors included roadway design, environmental conditions, traffic conditions and vehicle/driver features. Especially, special population groups, which divided into older, middle Age, and …

Aggression And Its Consequences In Nursing: A More Complete Story By Adding Its Social Context, Liu-Qin Yang

USF Tampa Graduate Theses and Dissertations

Using a 471-case nursing sample, the current study examined the direct and indirect relationships between workplace aggression (including physical and psychological) against nurses and their health and safety consequences. Specifically, physical and psychological aggression nurses experienced were related to their job dissatisfaction, turnover intention, physical symptoms, injuries and exposure to contagious disease directly and/or indirectly through their emotional strain (irritation, anxiety, and depression). In addition, my findings demonstrated that stronger violence prevention climate (i.e., good prevention practices/response and low pressure for unsafe practices) was related to less frequent violence and psychological aggression incidents nurses experienced. Also, my results indicated significant …

Advanced Transceiver Algorithms For Ofdm(A) Systems, Hisham A. Mahmoud

USF Tampa Graduate Theses and Dissertations

With the increasing advancements in the digital technology, future wireless systems are promising to support higher data rates, higher mobile speeds, and wider coverage areas, among other features. While further technological developments allow systems to support higher computational complexity, lower power consumption, and employ larger memory units, other resources remain limited. One such resource, which is of great importance to wireless systems, is the available spectrum for radio communications. To be able to support high data rate wireless applications, there is a need for larger bandwidths in the spectrum. Since the spectrum cannot be expanded, studies have been concerned with …

Performance Of Rapid Tooling Molds For Thermoformed Sockets, Jairo R. Chimento

USF Tampa Graduate Theses and Dissertations

Traditional prosthetic socket fabrication is a laborious and time consuming process that involves physical measurements, plaster wrapping of the stump, plaster casting for positive mold preparation, and a thermoforming process. During the mold preparation stage, significant modifications are performed subjectively based on the prosthetist's experience to transmit an optimum load to the residual limb through the socket. Rapid Prototyping techniques have advanced rapidly during the recent decades emerging as a computer aided socket design alternative which promises a potential reduction in the fabrication time, and a more systematic design approach. In addition, 3-D scanning provides accurate and fast virtual replica …

The Quasi-Uniformity Condition And Three-Dimensional Geometry Representation As It Applies To The Reproducing Kernel Element Method, Nathaniel O. Collier

USF Tampa Graduate Theses and Dissertations

The Reproducing Kernel Element Method (RKEM) is a hybrid between finite elements and meshfree methods that provides shape functions of arbitrary order and continuity yet retains the Kronecker-delta property. To achieve these properties, the underlying mesh must meet certain regularity constraints, unique to RKEM. The aim of this dissertation is to develop a precise definition of these constraints, and a general algorithm for assessing a mesh is developed. This check is a critical step in the use of RKEM in any application.

The general checking algorithm is made more specific to apply to two-dimensional triangular meshes with circular supports and …

An Exploration Of The Relationships Between The Quality Of The Sport, Social, And Academic Experiences Of College Student-Athletes And Their Adjustment To College: A Qualitative Analysis, Susan L. Freeman

USF Tampa Graduate Theses and Dissertations

Intercollegiate athletics at major universities provide a variety of opportunities and challenges for student-athletes who choose to participate. This qualitative project studies the quality of interactions in the sport, the social, and the academic experiences for freshman football and male soccer student-athletes and their adjustment to college. The five research questions under review were as follows:

• Is there a relationship between the quality of the sport experience and adjustment to college as reported by freshman football and male soccer student-athletes attending a NCAA Division I-A institution?
• Is there a relationship between the quality of the social experience and adjustment to …

Politics, Journalism And Web 2.0 In The 2008 U.S. Presidential Elections, Wayne Scott Garcia

USF Tampa Graduate Theses and Dissertations

The explosion of new political speech in digital formats in the 2008 elections, especially those involving social networking, offered new opportunities and challenges for political journalists, campaign participants and voters alike. This review of new political media in 2008 examines how these new methods of political organizing and communications work and provides insights to further understand how media can best cover and participate in them. The thesis details how 2008 was the first fully Web 2.0 election, exhibiting its characteristics of interactivity, use of databases and the "long tail" of microniche Internet websites. Three new media uses - online, database-driven …

A Course-Based Model Of Transfer Effectiveness Of Community College Students Transferring To A Large, Urban University, Elizabeth Steinhardt Stewart

USF Tampa Graduate Theses and Dissertations

Florida's undergraduate organization of higher education is a 2 + 2 system in which students are encouraged to complete freshmen and sophomore years at a community college and then transfer to a state university. Florida statutes provide for a highly articulated educational system to facilitate seamless transition from one public institution to another. The researcher investigated the transfer function's effectiveness among community college students subsequent to enrollment at a large, urban, doctoral/research extensive university in Florida using a course-based model of transfer success. The research explored whether differences existed in academic performance in targeted upper-division undergraduate courses between native and …

Are All Good Soldiers Created Equal? Examining The "Why" That Underlies Organizational Citizenship Behavior: The Development Of An Ocb Motives Scale, Anna Lissa Tolentino

USF Tampa Graduate Theses and Dissertations

Traditionally, organizational citizenship behaviors (OCBs) have been conceptualized within a social exchange framework, implying that individuals perform citizenship behaviors in response to fair treatment by the organization (Zellars & Tepper, 2003). In accordance with this social exchange framework, researchers have identified a number of OCB antecedents, like perceived organizational support (Moorman, Blakely, & Niehoff, 1998; Settoon, Bennet, & Liden, 1996), job satisfaction, organizational commitment, organizational justice (LePine, Erez, & Johnson, 2002; Organ & Ryan, 1995), and leader-member exchange (Connell, 2005; Settoon, Bennett, & Liden, 1996; Wayne & Greene, 1993). Recently, however, research has shifted from viewing OCB as a reactionary …

Fundamental Investigations On Open-Framework Intermetallic Materials Of Group 14, Matthew K. Beekman

USF Tampa Graduate Theses and Dissertations

Crystalline open-framework intermetallics have long attracted the attention of chemists, physicists, and materials scientists. The intriguing structures such materials exhibit are often intimately related to the unique physical properties they possess. The present work is focused on the preparation and characterization of open-framework intermetallic materials based on group 14 elements, in particular those crystallizing in clathrate and related structures such as the clathrate-II phases. Materials possessing the clathrate-II crystal structure have received increased attention in recent years, as a result of both the unique properties they exhibit as well as potential for use in technologically important applications such as thermoelectrics, …

2-D Finite Element Modeling For Nanoindentation And Fracture Stress Analysis, Chi Chen

USF Tampa Graduate Theses and Dissertations

In Chapter 1, a brief introduction of nanoindentation and finite element method is presented. General procedures have been developed based on FEM modeling of nanoindentation data to obtain the mechanical properties of thin films. Selected FEM models are illustrated in detail.

In Chapter 2, nanoindentation test is simulated using finite element method based on contact mechanics approach. The relationship between load and indentation depth is obtained. The numerical results show good agreement with experimental data. It is shown that FEM is an effective tool for simulation of nanoindentation tests of metallic films. However, limitations caused by simplification of models and …

Cooper-Hewitt Museum Of Design And Technology (C-Hmd+T): Biomimetic Architecture As Part Of Nature, Isabel Marisa Corsino Carro

USF Tampa Graduate Theses and Dissertations

If architects are to create a sustainable world, one in which we are accountable to the needs of all future generations and living creatures, we must recognize that our present form of designing buildings is deeply flawed. Being the number one cause of emission gases, building design needs to be revolutionized to be able to surpass such climatic changes and finally harmonize with nature. To create a sustainable future and solve the global warming crisis, architects need to incorporate nature within design through the process known as biomimicry. Janine Benyus, the author of Biomimicry: Innovation Inspired by Nature, stressed how …

Moment-Dependent Pseudo-Rigid-Body Models For Beam Deflection And Stiffness Kinematics And Elasticity, Diego Alejandro Espinosa

USF Tampa Graduate Theses and Dissertations

This thesis introduces a novel parametric beam model for describing the kinematics and elastic properties of ortho-planar compliant Micro-Electro-Mechanical Systems (MEMS) with straight beams subject to specific buckling loads. Ortho-planar MEMS have the ability to achieve motion out the plane on which they were fabricated, characteristic that can be used to integrate optical devices such as variable optical attenuators and micro-mirrors. In addition, ortho-planar MEMS with large output forces and long strokes could be used to develop new applications such as tactile displays, active Braille, and actuation of micro-mirrors. In order to analyze the kinematics and elasticity of a curved …

Analysis Of Single Fiber Pushout Test Of Fiber Reinforced Composite With A Nonhomogeneous Interphase, Sri Harsha Garapati

USF Tampa Graduate Theses and Dissertations

Fiber pushout test models are developed for a fiber-matrix-composite with a nonhomogeneous interphase. Using design of experiments, the effects of geometry, loading and material parameters on critical parameters of the pushout test such as the load-displacement curve and maximum interfacial shear and normal stresses are studied. The sensitivity analysis shows that initial load displacement curve is dependent only on the indenter type and not on parameters such as fiber volume fraction, interphase type, thickness of interphase, and boundary conditions. In contrast, interfacial shear stresses are not sensitive to indenter type, while the interfacial radial stresses are mainly sensitive to fiber …

Framework For Self Sustaining Eco-Village, Eric Holtgard

USF Tampa Graduate Theses and Dissertations

Why are modern American cities fundamentally dependant on outsourced resources and dirty power? Why can't modern cities support themselves and their inhabitants without relying on resources from half way across the world? Even within the city itself, community neighborhoods are disconnected and bisected by massive expanses of life endangering highways. Why can't we wake up and open our eyes to the urban reality we are creating for future generations. Future cities must look past immediate gain and focus on long term sustainability rather than compiling L.E.E.D. points or making a selfish profit.

Sustainable Infrastructure is the first step towards freeing …

Employee Commitment: The Combined Effects Of Bases And Foci, Meng Uoy Taing

USF Tampa Graduate Theses and Dissertations

Recent studies indicate that employees distinguish between commitments to interpersonal foci within the organization, such as supervisors and coworkers. Often, these commitments account for variance in outcomes incremental to organizational commitment (e.g., Becker, 1992). Unfortunately, research has tended to focus on affective forms of commitment to foci, while ignoring normative and continuance commitment. To address this gap, the current study proposed and tested models of commitment to foci which incorporate normative and continuance commitment in addition to affective commitment. Results showed some parallels with findings concerning organizational commitment. Much like organizational commitment, support from a focus relates to affective commitment …

Work-Family Conflict, Eating Behaviors, And The Role Of Coping, Ashley G. Walvoord

USF Tampa Graduate Theses and Dissertations

There were two primary aims of the present study. The first aim was to examine the relationships between work-interference-with-family (WIF) and specific eating behaviors (eating vegetables, fruits, snack foods) reported by employed mothers, as it relates to health criteria such as BMI. Related to this first aim, household coping strategies were proposed as playing a significant role in the relationship between WIF and eating behaviors. The second aim was to investigate the crossover of WIF to specific child eating behaviors via mother feeding practices or mother eating behaviors.

Self-report and other-report survey data were collected from working mothers and their …

Techniques For Vlsi Circuit Optimization Considering Process Variations, Mahalingam Venkataraman

USF Tampa Graduate Theses and Dissertations

Technology scaling has increased the transistor's susceptibility to process variations in nanometer very large scale integrated (VLSI) circuits. The effects of such variations are having a huge impact on performance and hence the timing yield of the integrated circuits. The circuit optimization objectives namely power, area, and delay are highly correlated and conflicting in nature. The inception of variations in process parameters have made their relationship intricate and more difficult to optimize. Traditional deterministic methods ignoring variation effects negatively impacts timing yield. A pessimistic worst case consideration of variations, on the other hand, can lead to severe over design. In …

Multimodal Text Designers: A Case Study Of Literacy Events In A Multicultural Context, Mary-Virginia Feger

USF Tampa Graduate Theses and Dissertations

The erasure of Latino/a adolescents' multiliteracies in school settings affects both their views of education and their entry into the community outside of school. Framed by literacy-as-social-practices perspectives and communities of practice theory, this case study explored what happened when a group of 13 Latino/a adolescents and their Latina teacher engaged in a six-week play production in an after-school program and performed the play for parents. It examined the relationship between the participants' discourse practices and their performance, and determined how they validated their performances. Data collected included observations, interviews, students' written reflective responses, a fieldwork journal, and a DVD …

Semantic And Phonological Priming Effects On N400 Activation In People Who Stutter, Jessica Lauren Huffman

USF Tampa Graduate Theses and Dissertations

To date, research on mechanistic aspects of fluency disorders has focused heavily on motor contributions to stuttering. Only recently have researchers begun to explore psycholinguistic contributions to stuttering. Psycholinguistic planning for speech heavily involves the activation and processing of lexical information. We used a neuroscience approach to compare word activation in mental lexicon while completing a picture naming task in people who stutter (PWS) versus fluent individuals (PWNS).

Twenty-eight individuals ranging in age from 19 - 52 years old participated in a picture-word priming task adopted from Jescheniak et al. (2002). Electroencephalogram (EEG) was recorded while participants saw black and …

Effects Of Diluent Addition And Metal Support Interactions In Heterogeneous Catalysis: Sic/Vpo Catalysts For Maleic Anhydride Production And Co/Silica Supported Catalysts For Fts, Ala'a Hamed Kababji

USF Tampa Graduate Theses and Dissertations

This work begins with an introduction to catalysis focusing on heterogeneous systems and surface science phenomena. A study on the partial oxidation reaction of n-butane to maleic anhydride (MA) is presented in the first part. MA supplies are barely adequate for market requirements due to continued strong demand. Only slight improvement in catalytic performance would be welcome in the industrial community. The vanadium phosphorus oxide (VPO) catalyst was used in this work. The reaction is highly exothermic and the need to properly support the catalyst, not only for good dispersion but adequate heat dissipation is of crucial importance. For this, …

Shell Abnormalities In Archaias Angulatus (Foraminifera) From The Florida Keys: An Indication Of Increasing Environmental Stress?, Heidi Lynne Souder

USF Tampa Graduate Theses and Dissertations

Historically, Archaias angulatus has been a major contributor to foraminiferal assemblages and sediments in coral-reef environments throughout the Caribbean and tropical Atlantic. A variety of anomalous features were observed in the tests of A. angulatus individuals collected live from the Florida reef tract in 2004 and 2005. Six types of anomalies were documented using scanning electron microscopy: microborings, microbial biofilm, pitted surfaces, dissolution, calcification abnormalities, and growth abnormalities. Calcification abnormalities included mineralogical projections, lacy crusts, and repair marks. These abnormalities were found among both juvenile and adult A. angulatus, and similar features were also found among Cyclorbiculina compressa and …

Using 34-S As A Tracer Of Dissolved Sulfur Species From Springs To Cave Sulfate Deposits In The Cerna Valley, Romania, Jonathan Sumrall

USF Tampa Graduate Theses and Dissertations

Baile Herculane, located in southwestern Romania, is a unique city that exploits its thermal waters. The geology consists of a granitic basement covered by 200 meters of limestone, marl, and flysch deposits. Extreme faulting carries heat ascending from the mantle, which intercepts percolating meteoric waters. Local springs have high concentrations of dissolved sulfide gas (H₂S) and dissolved sulfate (SO₄²^-).These dissolved species indicate the progression of sulfate reduction in the aquifer.

Water samples were collected in polyethylene syringes to prevent oxidation of sulfide. Then, sulfide and sulfate were quantitatively reacted for stable isotope analysis. Total …

The Participation Of Ngos In Healthcare: The Case Of Pediatric Cancer Treatment In Argentina, Cecilia Vindrola Padros

USF Tampa Graduate Theses and Dissertations

The deterioration of the Argentine public health system has lead to an increase in non-governmental involvement in the provision of health services. The emerging relationship between these sectors is filled with tensions, contradictions, and negotiations, reflecting the historical trajectory of non-governmental organizations (NGOs) and the transformations of the public health system. These problems are specifically evident in programs that focus on pediatric oncology treatment due to the fact that ideas about childhood, chronic disease, and mortality construct an unusual collaborative framework between governmental and non-governmental healthcare professionals. Pediatric cancer contradicts traditional notions of childhood; it points out the ambivalences associated …

Developing Feminist Activist Pedagogy: A Case Study Approach In The Women's Studies Department At The University Of South Florida, Stacy Tessier

USF Tampa Graduate Theses and Dissertations

In this thesis, I examine the relationship between activism and the two introductory-level Women's Studies classes, Introduction to Women's Studies and Issues in Feminism, and the social justice mission of the Women's Studies department. These two classes are the pillars for the program and are often the first classes that draw students into the program. I propose that the Women's Studies department does promote social justice through the curriculum and there are ways that the department could do more to facilitate activism in the classroom and beyond the classroom.

The Women's Studies department at the University of South Florida is …

Intradermal Delivery Of Plasmids Encoding Angiogenic Growth Factors By Electroporation Promotes Wound Healing And Neovascularization, Bernadette Ferraro

USF Tampa Graduate Theses and Dissertations

Gene therapy techniques delivering exogenous angiogenic growth factors, such as vascular endothelial growth factor (VEGF) and basic fibroblast growth factor (FGF-2), are currently being investigated as potential treatments for ischemia resulting from a variety of conditions, such as peripheral artery disease (PAD) and chronic wounds. Despite these intense efforts, a viable clinical option to promote therapeutic neovascularization remains elusive. Electroporation is a simple in vivo method to deliver normally impermeable molecules, such as plasmid DNA, to a variety of tissues including skin and muscle. This study investigated intradermal injection of plasmids encoding angiogenic growth factors with electroporation as a novel …

It Is Time To Play! Peer Implemented Pivotal Response Training With A Child With Autism During Recess, Leigh Anne Sams

USF Tampa Graduate Theses and Dissertations

Children with autism, by diagnostic criteria, experience a lack of age appropriate play and social skills (American Psychiatric Association, 1994). This study evaluated three typically developing peer's ability to implement Pivotal Response Training strategies during recess with a child with autism in their third grade class. A concurrent multiple probe baseline across peers design was used to assess peers ability to implement Pivotal Response Training strategies with the target child and the effects of intervention on the play and communication behavior of the target child. Generalization measures were taken in an untrained environment. Measures of social validity in the form …

Photoluminescence Spectroscopy Of Bioconjugated Quantum Dots And Their Application For Early Cancer Detection, Ganna Chornokur

USF Tampa Graduate Theses and Dissertations

Most of the bio-applications of semiconductor quantum dots (QDs) show and utilize their superior optical properties over organic fluorophores. An estimated 3-35% of all cancer deaths could be avoided through early detection, therefore, there is a critical need to develop sensitive probes.

The objectives of this work are:

Research the phenomena of "blue" photoluminescence (PL) spectral shift on the dried bioconjugated QDs and develop the relevant mechanism;

Develop a methodology that will allow successful confirmation of the bioconjugation reaction between biomolecules and QDs;

Propose a modification of an existent method or approach to employ the "blue" spectral shift of bioconjugated …

Long Term Corrosion Of Reinforcing Strips In Mechanically Stabilized Earth Walls, Brandon Seth Berke

USF Tampa Graduate Theses and Dissertations

Mechanically stabilized earth (MSE) walls are a more advanced form of a retaining wall, often larger and able to hold back more backfill. This is achieved by reinforcing strips or meshes (most often galvanized steel) placed into the soil, which are held in place by friction. The strips mechanically stabilize the earth while undergoing tension. The wall is covered with concrete medallions that connect to the reinforcements. The medallions have only a secondary structural role in holding up the wall but provide cover that protects the soil from washing away. MSE walls are structures expected to have very long service …

The Characterization And Interpretation Of The Spectral Properties Of Karenia Brevis Through Multiwavelength Spectroscopy, Adam H. Spear

USF Tampa Graduate Theses and Dissertations

Optical research has shown that Karenia brevis has distinct spectral characteristics, yet most studies have focused exclusively on absorption and chemical properties, ignoring the size, shape, internal structure, and orientation, and their effect on scattering properties. The application of a new spectral interpretation model to K. brevis is shown to provide characterization of unique spectral information, not previously reported, through the use of scattering and absorption properties. The spectroscopy models are based on light scattering and absorption theories, and the approximation of the frequency-dependent optical properties of the basic constituents of living organisms. The model uses the process of mathematically …