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Self-Control, Gang Membership, And Victimization: An Integrated Approach To The Risk Factors Of Violent Victimization, Kristina Childs

USF Tampa Graduate Theses and Dissertations

This study integrates one of the most empirically tested individual characteristics (self-control) with situational factors (risky lifestyle) in an attempt to explain the risks involved in violent victimization. Data came from a diverse sample of 3,907 middle school students who participated in the G.R.E.A.T. program during the 1993-1994 school year. Gang membership is used as a proxy variable to measure risky lifestyle. It is hypothesized that 1) gang membership will mediate the effect of self-control on violent victimization and 2) self-control and gang membership will interact to amplify the risk of violent victimization.

Logistic regression was used to analyze the …

High Resistivity Zinc Stannate As A Buffer Layer In Cds/Cdte Solar Cells, Sudhakar R. Gayam

USF Tampa Graduate Theses and Dissertations

The electrical conductivity of transparent conducting oxides is well exploited in front surface electrodes for solar cells where high transmission is also important. Fluorine doped tin oxide (SnO₂: F) is the most popular choice of front contacts for CdTe solar cells. In this thesis, Cd₂SnO₄ and Zn₂SnO₄ thin films are investigated focusing on their electrical and optical properties and used them in solar cells. Processing for these materials is optimized for optimum solar cell performance.

Cd₂SnO₄ thin films are deposited by co-sputtering of CdO and SnO₂ targets in …

Stability Studies Of Cdte Solar Cells Fabricated With Varying Amounts Of Cu In The Back Contact, Swetha Erra

USF Tampa Graduate Theses and Dissertations

Solar energy is one of the abundant, non-polluting renewable energy options in our planet. During the last three decades considerable progress has been achieved in developing technologies to produce electricity from solar radiation, but producing electricity with low cost and low pollution is of concern. The CdTe solar cells are the leading source for the production of cost effective solar cells. The main issue of concern in these CdTe solar cells is degradation observed when stressed at elevated temperatures. The degradation in CdTe solar cells can be attributed to the back contact, which often contains Cu to improve the electronic …

Hybrid Model For Characterization Of Submicron Particles Using Multiwavelength Spectroscopy, Alicia Garcia-Lopez

USF Tampa Graduate Theses and Dissertations

The area of particle characterization is expansive; it contains many technologies and methods of analysis. Light spectroscopy techniques yield information on the joint property distribution of particles, comprising the chemical composition, size, shape, and orientation of the particles. The objective of this dissertation is to develop a hybrid scattering-absorption model incorporating Mie and Rayleigh-Debye-Gans theory to characterize submicron particles in suspension with multiwavelength spectroscopy.

Rayleigh-Debye-Gans theory (RDG) was chosen as a model to relate the particles joint property distribution to the light scattering and absorption phenomena for submicron particles. A correction model to instrument parameters of relevance was implemented to …

Multichannel Functional Data Decomposition And Monitoring, Hani Kababji

USF Tampa Graduate Theses and Dissertations

With current advances in sensors and information technology, online measurements of process variables become increasingly accessible for process control and monitoring. Such measurements may take the shape of curves rather than scalar values. The term Multichannel Functional Data (MFD) is used to represent the observations of multiple process variables in the shape of curves. Generally MFD contains rich information about processes. The challenge of process control in MFD is that Statistical Process Control (SPC) is not directly applicable. Furthermore, there is no systematic approach to interpret the complex variation in MFD. In this research, our objective is to develop an …

Characterization Of L-Cysteine Thin Films Via Photoemission Spectroscopy, Roy Gargagliano

USF Tampa Graduate Theses and Dissertations

Using photoemission spectroscopy (PES) the interface between the amino acid Lcysteine and a Au substrate was characterized to determine its electronic and chemical structure. L-cysteine was deposited on a Au substrate in several experiments via dipping into solution or via evaporation. The depositions were performed in several steps. Between deposition steps x-ray photoemission spectroscopy (XPS) and ultraviolet photoemission spectroscopy (UPS) measurements were taken. XPS was used to characterize the chemical interaction at the interface while UPS was used to determine the orbital line-up at the interface and the highest molecular orbital (HOMO) structure of L-cysteine. The results indicate the formation …

Performance Oriented Scheduling With Power Constraints, Brian C. Hayes

USF Tampa Graduate Theses and Dissertations

Current technology trends continue to increase the power density of modern processors at an exponential rate. The increasing transistor density has significantly impacted cooling and power requirements and if left unchecked, the power barrier will adversely affect performance gains in the near future. In this work, we investigate the problem of instruction reordering for improving both performance and power requirements. Recently, a new scheduling technique, called Forced Directed Instruction Scheduling, or FDIS, has been proposed in the literature for use in high level synthesis as well as instruction reordering [15, 16, 6]. This thesis extends the FDIS algorithm by adding …

Rational Fraction Approximations For Passive Network Functions, William Joel Dietmar Johnson

USF Tampa Graduate Theses and Dissertations

In electrical engineering, the designer is often presented with the problem of synthesizing a circuit for which the mathematical specifications are unsuitable for physical realization. Hence, the engineer must approximate as well as possible the prescribed network function by another function which is realizable. This paper describes a new approximation method for solving the problem of realizing passive network transfer functions, where the realization is carried out through the use of passive, reciprocal, lumped, linear, and time-invariant elements.

Optical Response Of Polycrystalline Mercuric Iodide Photoconductive Detectors, Prashant Chegoor

USF Tampa Graduate Theses and Dissertations

Mercuric Iodide in its tetragonal form has received a lot of attention for many years as a prospective room temperature X-ray and y-ray detector. Its basic properties are well suited for this purpose. Its wide band gap of 2.1eV contributes to a high dark resistivity of 10¹²ohm-cm or higher. A high atomic number of its constituent atoms (Hg-80, I -53) and a density of 6.3g/cm³ result in its efficient interaction with incident X-ray or y-ray radiation. Single crystalline mercuric iodide has been thoroughly studied and successfully utilized in commercial radiation detectors. But with the urgent need for …

Leakage Power Driven Behavioral Synthesis Of Pipelined Asics, Ranganath Gopalan

USF Tampa Graduate Theses and Dissertations

Traditional approaches for power optimization during high level synthesis, have targetted single-cycle designs where only one input is being processed by the datapath at any given time. Throughput of large single-cycle designs can be improved by means of pipelining. In this work, we present a framework for the high-level synthesis of pipelined datapaths with low leakage power dissipation. We explore the effect of pipelining on the leakage power dissipation of data-flow intensive designs. An algorithm for minimization of leakage power during behavioral pipelining is presented. The transistor level leakage reduction technique employed here is based on Multi-Threshold CMOS (MTCMOS) technology. …

Flood Forecasting Using Time Series Data Mining, Chaitanya Damle

USF Tampa Graduate Theses and Dissertations

Earthquakes, floods, rainfall represent a class of nonlinear systems termed chaotic, in which the relationships between variables in a system are dynamic and disproportionate, however completely deterministic. Classical linear time series models have proved inadequate in analysis and prediction of complex geophysical phenomena. Nonlinear approaches such as Artificial Neural Networks, Hidden Markov Models and Nonlinear Prediction are useful in forecasting of daily discharge values in a river. The focus of these methods is on forecasting magnitudes of future discharge values and not the prediction of floods. Chaos theory provides a structured explanation for irregular behavior and anomalies in systems that …

Process Development And Characterization Of Sol-Gel Lead Zirconate Titanate Films For Fabrication Of Flexural Plate Wave Devices, Praveen Kumar Sekhar

USF Tampa Graduate Theses and Dissertations

In recent years, research on development of chemical, biological and hazardous gas sensors for homeland security have attracted great deal of interest. Actuators possessing high sensitivity, easy fabrication techniques and excellent integration compatibility are in great demand. Towards this need, the development and characterization of improved solgel processing for in-house fabrication of highly sensitive and reliable Flexural Plate Wave (FPW) device was pursued

This work focuses on an experimental design approach to improve texture and morphology of PZT thin film by systematically controlling the spin, pyrolysis and anneal cycles. The process alterations resulted in an 8-fold increase in the relative …

All The News That’S Fit To Print? Media Reporting Of Environmental Protection Agency Penalties Assessed Against The Petroleum Refining Industry, 1997-2003, Melissa L. Jarrell

USF Tampa Graduate Theses and Dissertations

Although examination of the relationship between the media and crime has received considerable attention in the academic literature, only a few studies have examined news media coverage of environmental crimes. The present study examines print news media coverage of federal penalties assessed against the petroleum refining industry from 1997 to 2003. The Environmental Protection Agency initiated and/or settled 162 cases involving seventy-eight petroleum refining companies from 1997 to 2003. While a news search of the nation’s twenty-five largest newspapers produced seventy-four articles related to petroleum refining industry violations, only seventeen articles matched the EPA cases analyzed in the present study. …

Reducing Pollutants In Industrial Stormwater Runoff: Improved Water Quality Protection Using Prioritized Facility Regulation, Lindsay M. Griffen

USF Tampa Graduate Theses and Dissertations

Stormwater pollutants originating from industrial facilities can lead to degraded water quality, even in residentially dominated regions of the country. The National Pollutant Discharge Elimination System permit program regulates stormwater pollutants generated at industrial sites using Multi-Sector General Permits (Generic permits) for industrial facilities and a permit requirement for Municipal Separate Storm Sewer System (MS4) operators. All industrial facilities within 11 broad categories of industry are responsible for self-identifying the need to comply with the Generic permit, and subsequently, implementing self-selected pollution prevention strategies. MS4 operators are required to identify and inspect “high risk” industrial and commercial facilities that may …

Self-Guided Micro Vehicle: An Autonomous Vehicle With Gps Navigation And 802.11b Communications, Roberto J. Guerra

USF Tampa Graduate Theses and Dissertations

To facilitate the learning of automatic navigation systems by engineering students an easy to obtain platform is useful. The topic of this thesis is the design and implementation of a basic self-guided vehicle that can be programmed and expanded by anyone possessing basic experience with the C programming language. The Self-Guided Micro Vehicle, (SGMV), uses off-the-shelf easy to obtain parts such as a toy R/C truck and the Handyboard to maximize availability of this technology to students.

This thesis divides the SGMV design process by functionality. It starts by documenting the locomotion system, which was a modified R/C toy truck. …

Molybdenum As A Back Contact For Cucl Treated Cds/Cdte Solar Cells, Matheshkumar Jayabal

USF Tampa Graduate Theses and Dissertations

CdTe is one of the most promising absorbers for use in inexpensive semiconductor solar cells having achieved a high efficiency of 16.4% in small area cells [1]. One of the most important technological problems in obtaining high efficiencies is to have a good ohmic contact on the CdTe, which is characterized by a very high work function [2]. Cu is used as a dopant in CdTe at the contact to promote quantum mechanical tunneling [3]. But the oversupply of Cu causes the diffusion of Cu through CdTe to the underlying CdS layer resulting in the degradation of the cell performance. …

Hope And Quality Of Life In Hospice Patients With Cancer, Cynthia Brown

USF Tampa Graduate Theses and Dissertations

Hope is considered to have a positive influence upon health. Cancer patients may enter hospice care after a rigorous course of medical treatment, having hoped for a cure or long remission. While the hope for cure is important, hope is no less important at the end of life when the goal of care is quality of life. This study examined the relationship between hope and quality of life in hospice patients with cancer.

Thirty-one patients with cancer, who were alert, oriented, living with a caregiver, and aware of their diagnosis were sampled from a hospice program. The instruments used were …

Development Of A Ctd System For Environmental Measurements Using Novel Pcb Mems Fabrication Techniques, Heather Allison Broadbent

USF Tampa Graduate Theses and Dissertations

The development of environmental continuous monitoring of physicochemical parameters via portable small and inexpensive instrumentation is an active field of research as it presents distinct challenges. The development of a PCB MEMS-based inexpensive CTD system intended for the measurement of environmental parameters in natural waters, is presented in this work. Novel PCB MEMS fabrication techniques have also been developed to construct the conductivity and temperature transducers. The design and fabrication processes are based on PCB MEMS technology that combines Cu-clad liquid crystal polymer (LCP) thin-film material with a direct write photolithography tool, chemical etching and metallization of layers of electroless …

The Impact Of Privatization Of Primary Care Programs In Large County Health Departments In Florida, Arlesia Lynn Brock

USF Tampa Graduate Theses and Dissertations

Since the mid-1970s, top managers, politicians, and officials in both public and private institutions have promoted contracting-out services (privatization) as a means of increasing efficiency, flexibility, and quality. The privatization trend has occurred in many public sector organizations particularly in city services and prisons. Public health services are not immune to this trend. Today many county health departments have contracted the provision of public health services like womens health, primary care, and laboratory services. However, very few studies have analyzed the impact of these privatizations on cost, access, and health outcomes. Proponents favoring the private provision of these services argue …

The Assessment Of Appearance Factors Related To Intentional Uv Exposure, Guy Cafri

USF Tampa Graduate Theses and Dissertations

Understanding the motives for sunbathing and indoor tanning is an extremely important public health issue. Skin cancer rates have increased dramatically in recent years and UV exposure via sunbathing and utilization of sun lamps and tanning beds are considered important risk factors. Motives for sunbathing and tanning salon use have been thought to be related to appearance concerns, yet little research has examined the specific tan appearance attitudes that may contribute to use of these behaviors. Two studies were conducted with the aim of assessing distinct attitudes related to a tan appearance. In the first study items were created based …

An Evaluation Of The Dopaminergic Systems’ Response To A Natural Reinforcer: A Comparison Between Cocaine Pretreatment In Adolescent And Adult Rats, Briony Catlow

USF Tampa Graduate Theses and Dissertations

The long-term consequences of adolescent drug use in shaping a network primed for addiction is an issue of utmost importance. The use of cocaine during adolescent development could alter the normal growth of the reward system and affect the adult mesolimbic system, however, there is scant literature aimed at finding out if animals are more vulnerable to the adverse effects of drugs during adolescence. The present study investigated whether cocaine pretreatment in adolescent and adult rats produced differences in cocaine-induced neurochemical cross-sensitization to a naturally reinforcing substance in adulthood. To evaluate the responsivity of the mesolimbic system after repeated cocaine, …

Learning To Dance While Becoming A Dancer: Identity Construction As A Performing Art, Matthew A. Caudill

USF Tampa Graduate Theses and Dissertations

In a university undergraduate dance department, students seem to be learning more than pirouettes and pas de bourées; students are learning how to construct their identities and present themselves as ‘dancers’. As they progress through their undergraduate careers, the students are not only developing technical skills, but they are also learning the ins and outs of how dancers look, speak and behave. Based on three months of observation and in-depth interviews, it seems that developing into a dancer requires developing into an individual who shows unique commitment both to him/herself and to the art of dance itself. While many …

A Co-Orientational Analysis Of Public Involvement Perceptions In The Transportation Process: A Case Study, Kristen E. Carson

USF Tampa Graduate Theses and Dissertations

This study explored public involvement within the Florida Department of Transportation (FDOT) using the co-orientational theory. Effective public involvement gives the public opportunities to be involved early in the planning and implementation of transportation projects that directly affect or may concern them. The co-orientational model looks at what an organization (FDOT) thinks about an issue (public involvement), what the public thinks of the issue, what the organization thinks the public thinks about the issue, and what the public thinks the organization thinks about the issue.

This study investigated whether the FDOT management has an accurate understanding of the perceptions of …

Eros, Paideia And Arête: The Lesson Of Plato’S Symposium, Jason St. John Oliver Campbell

USF Tampa Graduate Theses and Dissertations

Commentators of Plato’s Symposium rarely recognize the importance of traditional Greek conceptions of Eros, paideia and arête in understanding Plato’s critique of the various educational models presented in the dialogue. I will show how Plato contests these models by proposing that education should consist of philosophy. On this interpretation, ancient Greek pedagogy culminates in a philosophical education. For this new form of education, the dialogical model supplants the traditional practices of kléos and poetic mimēsis, inextricably bound to archaia paideia and traditional forms of education. Plato’s Socrates is searching for knowledge and immortality through an application of the philosophical method, …

Effects Of Constructed Response Contingencies In Web-Based Programmed Instruction On Graphing Compared To Cued-Text Presentation Of The Same Information, Reinaldo L. Canton

USF Tampa Graduate Theses and Dissertations

Web-based lessons teaching graph construction techniques (via the internet) were presented to 144 undergraduate and graduate college students. One group experienced program-controlled tutorials requiring them to construct answers in a defined sequence. A second group experienced identical lesson material in the form of typographically cued text presentations. The programmed instruction students performed significantly better than the cued-text group on an immediate computerbased posttest assessing comprehension of the graphing lesson material. The cuedtext group performed better on an applied graphing assignment. The experiment did not account for individual’s internet study habits or the metacognitive approaches to learning employed by the study …

The Articulate Remedies Of Dolores Lolita Rodriguez, Hyatt Kellim Brown

USF Tampa Graduate Theses and Dissertations

For eighty-six-year-old Tampa, Florida, native Dolores Lolita Rodriguez, yard decorating was more than just decoration; it was a form of therapy. Her yard was a massive assemblage of found objects arranged into a personalized visual vocabulary that involved honoring the deceased, her Spanish identity, and local spiritual practices. The yard also upheld a unique conception of beauty. Her creations were an articulation of, and remedy for, a life of tremendous loss. They were also the cause of her stroke and confinement to rehabilitation in November 2002.

Dolores property was visually cognate with a mode of yard decoration, called the African-American …

"I'Ve Got The Power!": Investigating Pre-Service Special Educators' Perceptions And Abilities To Teach Reading To Students With Disabilities", Tandria Milango Callins

USF Tampa Graduate Theses and Dissertations

This study, through a multiple case study approach, was designed to investigate how pre-service special educators were empowered to teach reading to students with disabilities during their final internship. A developmental-constructivism theoretical framework guided this study in order to examine how a teacher preparation program prepared a six-member cohort of pre-service special educators in the areas of efficacy, competency, and preparedness. Based on the principles of developmental-constructivism, the researcher investigated whether or not these pre-service special educators became more empowered in the areas of efficacy, competency, and preparedness through active-learning and hands-on opportunities.

The researcher employed a concurrent mixed-method design …

Fabrication Of Palladium Nanoparticles And Nanoporous Alumina Templates, Pavani Chennapragada

USF Tampa Graduate Theses and Dissertations

Nanostructured materials have potential technological applications due to their characteristic dimensions. The material performance will depend on the atomic structure, and composition of these materials. This thesis focuses on proposing a reliable method for fabricating nanoporous alumina and palladium nanoparticles inside the templates. Palladium nanoparticles were synthesized in commercial porous alumina templates using electrodeposition. Pores within these nanoporous membranes act as templates for the synthesis of nanostructures of the desired material. Electrodeposition is achieved using a three-terminal set-up and a potentiostat. Different types of deposition techniques were investigated to improve the distribution of the deposit. The nanoparticles were characterized by …

From Strange Fruit To Fruitful Kitchens: The Space Of The Kitchen In Toni Morrison’S Novels, Betty J. Chroninger

USF Tampa Graduate Theses and Dissertations

Toni Morrison's recovery of the African-American presence in her novels is uniquely tied to the space of the kitchen. The recovery of the African-American presence has been accomplished in various ways for various groups: historians, critics, authors, sociologists. They have named names, recalled incidents, and "discovered" texts. Recovery has been accomplished by reconstructing culture through songs, storytelling, folklore and myth. Morrison establishes a connection between the space of the Garden that represents a white male empowered world in which African-American women have difficulty establishing power to a space of the kitchen where we see how well each character has been …

Exploring Women’S Complex Relationship With Political Violence: A Study Of The Weathermen, Radical Feminism And The New Left, Lindsey Blake Churchill

USF Tampa Graduate Theses and Dissertations

In this thesis I use the radical, pro-violent organization the Weathermen as a framework to examine women and feminisms complex relationships with violence. My thesis attempts to show the many belief systems that second wave feminists possessed concerning the role(s) of women and violence in revolutionary organizations. Hence, by using the Weathermen as a framework, I discuss various feminist essentialist and pacifist critiques of violence. I also include an analysis of feminists who, similar to the Weathermen, embraced political violence. For example, radical feminists Robin Morgan and Jane Alpert criticized the Weathermen's violent tactics while other feminists such as Ti-Grace …