Arts and Humanities Commons^™

Limitations Of The Advection-Diffusion Equation For Modeling Tephra Fallout: 1992 Eruption Of Cerro Negro Volcano, Nicaragua, Kristin Terese Martin

USF Tampa Graduate Theses and Dissertations

Detailed mapping and granulometric analyses of the 1992 Cerro Negro tephra blanket reveal remarkable departures from the expected distribution of tephra. Isomass maps show that the major axis of dispersion for the eruption was to the SW of the cone and that the coarser-grained particles, ranging from -4.0 -- 1.0 f, were deposited primarily along the major axis of dispersion with deposits thinning off of the axis. Comparable isomass maps for finer-grained particles, 1.5 - 3.5 f, show that these particles were primarily deposited along the edges of the deposit, off of the major axis of dispersion. Advection-diffusion models for …

Towards An E-Criture Feminine: Woolf, Duplessis, Cixous, And The Emerging Discursive Tradition In Women’S Online Diaries, Deborah Silverman Bowen

USF Tampa Graduate Theses and Dissertations

Women are drawing together the concepts of space, style,and medium and using these concepts collectively as a foundation for a new discursive tradition in the online autobiography. This dissertation, positioned in postmodern feminism, draws on a variety of disciplines to argue the development or evolution of a new women's discourse.

While a broad base of material exists which acknowledges the presence of women's discourse (formed by combining women's writing and women's genres), very little information explores its evolution, particularly in/on the new medium of the World Wide Web (WWW).

A combination of extant social and literary theories supports the idea …

Detailed Geochemical And Mineralogical Analyses Of Naturally Occurring Arsenic In The Hawthorn Group, Olesya Lazareva

USF Tampa Graduate Theses and Dissertations

In order to understand the mineralogical association and distribution of arsenic (As) in the Hawthorn Group in central Florida, I examined in detail the chemical and mineralogical composition of 361 samples that were collected from 16 cores. Geochemical analyses were performed by hydride generation - atomic fluorescence spectrometry (HG-AFS) and inductively coupled plasma optical emission spectrometry (ICP-OES). The identification of discrete minerals was aided by scanning electron microscopy (SEM) and chemical compositions were obtained by electron-probe microanalyses (EMPA).

Arsenic concentrations for all Hawthorn samples vary from 0.1 to 69.0 ppm with a mean of 5.6 ppm. Average As concentrations for …

Development Of A Solid Electrolyte For Hydrogen Production, Kiran Sampat Gaikwad

USF Tampa Graduate Theses and Dissertations

Electrolytic cells convert chemical energy directly into electrical energy cleanly and efficiently. An integral component of a fuel cell and an electrolytic cell is the electrolyte, a material that conducts ions. Liquid electrolytes can be aqueous as in the phosphoric acid and alkaline fuel cells, or molten, as in the molten carbonate fuel cells. A solid electrolyte is preferable because it allows sturdier, more efficient and corrosion resistant systems to be built.

The main objective of this work is to develop a solid electrolyte for hydrogen production by electrolysis of hydrogen sulfide. Barium Hydrogen Phosphate, Barium Dihydrogen Phosphate, Cesium Hydrogen …

Real Delay Graphical Probabilistic Switching Model For Vlsi Circuits, Vivekanandan Srinivasan

USF Tampa Graduate Theses and Dissertations

Power optimization is a crucial issue at all levels of abstractions in VLSI Design. Power estimation has to be performed repeatedly to explore the design space throughout the design process at all levels. Dynamic Power Dissipation due to Switching Activity has been one of the major concerns in Power Estimation. While many Simulation and Statistical Simulation based methods exist to estimate Switching Activity, these methods are input pattern sensitive, hence would require a large input vector set to accurately estimate Power. Probabilistic estimation of switching activity under Zero-Delay conditions, seriously undermines the accuracy of the estimation process, since it fails …

Behavioral Vhdl Implementation Of Coherent Digital Gps Signal Receiver, Viswanath Daita

USF Tampa Graduate Theses and Dissertations

Global Positioning System is a technology which is gaining acceptance. Originally developed for military purposes, it is being used in civilian applications such as navigation, emergency services, etc. A system-on-chip application merges different functions and applications on a single substrate. This project models a GPS receiver for a system on chip application. The GPS receiver, developed as a core, is intended to be a part of a navigation tour guide being developed. The scope of this work is the GPS C/A code on the L1 carrier. The digital signal processing back-end in a GPS receiver is modelled in this work. …

Behavioral And Rt-Level Estimation And Optimization Of Crosstalk In Vlsi Asics, Suvodeep Gupta

USF Tampa Graduate Theses and Dissertations

Downscaling of technology causes signal integrity problems due to crosstalk between closely-spaced interconnect lines. Existing crosstalk estimation and optimization techniques operate at the layout-level of circuits and fail to utilize the efficient design-space exploration at the high-level. To address this, we propose word-level statistical techniques which estimate crosstalk between bus lines: (1) Given a data stream, the first technique simply counts the number of crosstalk events on each bus line. The drawback of this technique is that the execution time is proportional to the stream length. This is overcome by the second enumerative technique which is purely statistical in nature. …

Creating A Distributed Field Robot Architecture For Multiple Robots, Matthew T. Long

USF Tampa Graduate Theses and Dissertations

This thesis describes the design and implementation of a distributed robot architecture, Distributed Field Robot Architecture. The approach taken in this thesis is threefold. First, the distributed architecture builds on existing hybrid deliberative/reactive architectures used for individual robots rather than creating a distributed architecture that requires re-engineering of existing robots. Second, the distributed layer of the architecture incorporates concepts from artificial intelligence and software agents. Third, the architecture is designed around Suns Jini middleware layer, rather than creating a middleware layer from scratch or attempting to adapt a software agent architecture. This thesis makes three primary contributions, both theoretical and …

Quantitative Paleoenvironmental Analysis Of Carbonate Platform Sediments On The Marion Plateau (Ne Australia, Odp Leg 194), Kathryn Sheps

USF Tampa Graduate Theses and Dissertations

The Marion Plateau is a carbonate-platform complex on the passive northeast Australian margin. During ODP Leg 194, a series of eight sites, on two transects, were drilled through Oligocene to Holocene mixed carbonate and siliciclastic sediments that record the depositional history of the Marion Plateau. Major sediment constituents, including benthic foraminifers, were counted from thin sections made from samples taken from three drilling sites: bryozoan-dominated northern highstand platform site 1193 and northern lowstand ramp site 1194, and coralline red algae-dominated southern platform site 1196.

Quantitative multivariate analysis of benthic foraminiferal assemblages revealed three paleoenvironmentally relevant groups of taxa. The first …

Development Of Assessment Tasks To Measure The Driving Capabilities Of Persons With Disabilities, Ashwin Upadhyay

USF Tampa Graduate Theses and Dissertations

The need to lead an independent and fuller life is as much a right of a person with physical disability as any other human being. Driving capabilities of a person with a disability have been assessed and evaluated using qualitative techniques. However, certain inadequacies that arise using qualitative measures can be avoided if the assessment is based on quantitative techniques.

The above requirement necessitates the need to devise a method and a system which is focused on the right development of the techniques used in assessing and measuring different capabilities (such as range of motion and force input) of the …

Design And Testing Of A Prototype Gripper For A Wheelchair Mounted Robot, Koushik R. Barhale

USF Tampa Graduate Theses and Dissertations

The application of technology makes a lot of things easier, but for individuals with disability, it makes things possible. Rehabilitation robotics aims at providing robotic devices, which can act as functional extensions of the user, while performing basic activities. Providing a well-designed gripper as its end-effector can greatly enhance the performance of a rehabilitation robot. The gripper performs simple tasks like picking up objects and manipulating objects, which help in performing activities of daily living.

This thesis describes the development of a prototype gripper for a wheelchair mounted robot. The pre-development surveys conducted before the development of commercialized robotic assistive …

"Studying Up" In Tampa Bay: Globalization And Business Elites, Jennifer Laurel Avery

USF Tampa Graduate Theses and Dissertations

This thesis presents results of research I conducted during Spring 2003 through an internship with a private economic development organization (called here the TBEDO) that markets the strategically branded, seven-county region know as Tampa Bay domestically and internationally. This internship provided me with the means to conduct research about Tampa Bay's international economy and explore the elusive topic of globalization. It provided me with networking opportunities needed to "study up" on business elites and to understand what their international development agendas are, how they accomplish these objectives, whether they subscribe to the belief that the world has undergone a qualitative …

A Guide To Historic Architectural Resources And Historic Preservation Of Unincorporated Hillsborough County, Shawn Michael Landry, Naomi Oliver, Cheran Williams, University Of South Florida. Florida Center For Community Design + Research, University Of South Florida. School Of Architecture And Community Design

College of The Arts Publications

Why preserve, Secretary of the Interior standards, and an overview of Hillsborough County's historic preservation program and purpose -- Hillsborough County Historic Resources Review Board (HRRB) and its functions and accomplishments -- Historic Hillsborough County communities -- Hillsborough County's historic landmarks -- Hillsborough County's historic inventory -- Local historic preservation programs and organizations in Hillsborough County -- State level programs and organizations -- Historic preservation at a national level -- Incentives for historic preservation -- The future of historic preservation in Hillsborough County -- Appendices -- Bibliography.

A Vascular Plant Inventory Of Jay B. Starkey Wilderness Park, Pasco County, Florida, Emily Ferguson

USF Tampa Graduate Theses and Dissertations

Jay B. Starkey Wilderness Park, located in southwestern Pasco County, Florida, contains nearly 7,689.06 hectares (19,000 acres) and includes 18 natural communities. A floristic inventory was conducted on approximately 404.69 hectares (1,000 acres) within Jay B. Starkey Wilderness Park which included 11 community types. A comparison of those 11 communities in the study area with the rest of the park shows that the dominant community types do occur within the study site, making it representative of the entire park. The objective of this study conducted from May 2003 to October 2004 was to compile a list of the vascular plant …

The Relationship Among Various Learner Characteristics And Reading Achievement As Measured By The Florida Comprehensive Assessment Test, Amanda A. Privé

USF Tampa Graduate Theses and Dissertations

The present study examined the relationships among various learner characteristics and reading achievement, as measured by the Florida Comprehensive Assessment Test (FCAT). Using a multiple regression, the independent variables grade, gender, ethnicity, and motivation to read were used to predict the dependent variable, reading achievement. Participants in this study consisted of 585 students from nine elementary, nine middle, and nine high schools across three districts in Florida.

Using archival data from a database composed by the Florida Center for Reading Research, the FCAT and Motivation to Read Profile were used to compute reading achievement and motivation to read, respectively. FCAT …

Application Of Support Vector Machines And Neural Networks In Digital Mammography: A Comparative Study, Nivedita V. Candade

USF Tampa Graduate Theses and Dissertations

Microcalcification (MC) detection is an important component of breast cancer diagnosis. However, visual analysis of mammograms is a difficult task for radiologists. Computer Aided Diagnosis (CAD) technology helps in identifying lesions and assists the radiologist in making his final decision.

This work is a part of a CAD project carried out at the Imaging Science Research Division (ISRD), Digital Medical Imaging Program, Moffitt Cancer Research Center, Tampa, FL. A CAD system had been previously developed to perform the following tasks: (a) pre-processing, (b) segmentation and (c) feature extraction of mammogram images. Ten features covering spatial, and morphological domains were extracted …

Adapting The Green And Ampt Model To Account For Air Compression And Counterflow, Darwiche Sabeh

USF Tampa Graduate Theses and Dissertations

One of the earliest functions to express infiltration as a function of time was introduced by Green and Ampt. In this study their formula was modified to account for air compression and counterflow. Physically,infiltration, air compression, and counterflow occur simultaneously, while in this model they are decoupled within a time step. Counterflow is calculated as a mass flux and pressure is found using the perfect gas law. First, a comparison of three infiltration methods, the original Green and Ampt formulation, a modified version incorporating air compression only, and the third version including air compression and counterflow, was conducted. Then sensitivity …

Frequency Judgments And Recognition: Additional Evidence For Task Differences, Serena Lynn Fisher

USF Tampa Graduate Theses and Dissertations

Four linked experiments were run in order to understand the relationship between frequency judgment and recognition discrimination tasks. The purpose of these studies was to contrast the common-path model and recursive reminding hypothesis as explanations for the underlying principles that drive these tasks. Item-attribute variables such as printed frequency, connectivity, and set size, and an episodic variable, study frequency were manipulated. Memory for recent episodes was evaluated using recognition and frequency judgment tasks. Although all of the variables, with the exception of set size, had significant effects in both tasks, an analysis of effect sizes revealed differences between the tasks …

The Effect Of Mental Practice Type On Dart-Throwing Performance, Todd Allen Joseph

USF Tampa Graduate Theses and Dissertations

The present study used a sample of 171 college students from the University of South Florida to examine the effects of different types of mental practice on dart-throwing performance. This study examined the effects of imagery and video modeling on an immediately following physical task As suspected, the video modeling condition under these circumstances was associated with poorer performance than the imagery and control conditions. The imagery condition, however, resulted in no difference in performance from the control condition. Discussions of the results and future avenues of research (including gender effects) are also mentioned.

Design And Testing Of A Marsupial/Companion Robot Prototype For A Powered Wheelchair, Sashi Kumar Konda

USF Tampa Graduate Theses and Dissertations

Individuals with disabilities yearn for an increased level of independence, seeking to supplement their missing function(s) and to carry on with their lives with minimal or no assistance from another person. A review of the existing assistive-care products has revealed that many of the defects in these devices, particularly in wheelchair-mounted robots, can be alleviated. Surveys have also identified tasks that users would like to perform by themselves, but are constrained from doing so by using currently available devices. An attempt has been made here to try to resolve these issues by developing a prototype of a marsupial robot that …

Women Animal Foster Care Workers: An Ecofeminist Critique, Denise L. Roemer

USF Tampa Graduate Theses and Dissertations

As with other forms of animal rights activism, animal foster care also appears to be dominated by women. In this paper I explore the role of animal foster care in, and its implications for, a Patriarchal society based on hierarchical dualisms. I argue that through their work as animal foster care workers and adoption facilitators these women do create positions of power for themselves, but that those positions remain subordinated to, and in some ways embrace, existing structural power relations--Patriarchy. More specifically, I argue that by constructing and assuming a social role that includes a culturally accepted power differential--the human-animal …

An Interdisciplinary Course For Non-Science Majors: Students' Views On Science Attitudes, Beliefs, And The Nature Of Science, Gary Eugene Brannan

USF Tampa Graduate Theses and Dissertations

This study's purpose was to investigate the differences in the attitudes towards science, belief in science, and the understanding of the nature of science between pre-service elementary education majors who took a two-semester interdisciplinary course called "Science That Matters" (ISC 1004 & ISC 1005) with those pre-service elementary education majors who took two undergraduate science courses other than the two-semester interdisciplinary science course.

The research method employed a 30-item survey (Moore & Foy, 1997) entitled Scientific Attitude Inventory II. The survey's participants were two classes who had taken both semesters of the interdisciplinary course (n = 23) compared with six …

Vhdl Coding Style Guidelines And Synthesis: A Comparative Approach, Shahabuddin L. Inamdar

USF Tampa Graduate Theses and Dissertations

With the transistor density on an integrated circuit doubling every 18 months, Moore’s law seems likely to hold for another decade at least. This exponential growth in digital circuits has led to its increased complexity, better performance and is quickly getting less manageable for design engineers.

To combat this complexity, CAD tools have been introduced and are still being continuously developed, which prove to be of great help in the digital industry. One of the technologies, that is rapidly evolving as an industry standard, is the Very High Speed Integrated Circuit Hardware Description Language, (VHDL), language. The VHDL standard language …

Stimulus-Free Rt Level Power Model Using Belief Propagation, Sathishkumar Ponraj

USF Tampa Graduate Theses and Dissertations

Power consumption is one of the major bottlenecks in current and future VLSI design. Early microprocessors, which consumed a few tens of watts, are now replaced by millions of transistors and with the introduction of easy-to-design tools to explore at unbelievable minimum dimensions, increase in chip density is increasing at a alarming rate and necessitates faster power estimation methods. Gate level power estimation techniques are highly accurate methods but when time is the main constraint, power has to be estimated a lot higher in the abstraction level. Estimating power at higher levels also saves valuable time and cost involved in …

Modification Of Karst Depressions By Urbanization In Pinellas County, Florida, Kelly V. Wilson

USF Tampa Graduate Theses and Dissertations

This thesis analyzes some of the effects of urbanization in Pinellas County, Florida on the karst landscape. Many sinkholes have been obscured and/or modified for storm water retention by urbanization in Pinellas County, with a few sinkholes still identifiable by characteristic zoning of vegetation, soil moisture, and circular shape. Using aerial photos from 1926 and 2000, karst features were identified by circularity,vegetation, and moisture conditions. Mapping karst surface features using historic aerial photos and maps is a useful exercise that will assist our scientific understanding of karstification in Florida and the nature and extent of karst processes that have acted …

The Subtypes Of Psychopathy And Their Relationship To Hostile And Instrumental Aggression, Diana M. Falkenbach

USF Tampa Graduate Theses and Dissertations

Psychopathy is not a diagnostic category, however theories of psychopathy have been discussed throughout psychological history. While the construct of psychopathy is associated with important psychological outcomes, there are inconsistencies in the literature with regard to correlates, etiology and treatment. These inconsistencies suggest that there may be several subtypes of psychopathy. This paper discusses the heterogeneity of psychopathy and considers the existence of psychopathic traits in nonclinical populations. Measures of etiology (Behavioral Activation System and Behavioral Inhibition System; Gray, 1985), psychopathy (Levenson's psychopathy measure; Levenson, Keihl, & Fitzpatrick, 1995) and anxiety (State Trait Anxiety Inventory; Speilberger, Gorsuch & Lushene, 1970) …

Influence Of Perceived Self-Efficacy On Treatment Outcomes For Aphasia, Allison B. Dunn

USF Tampa Graduate Theses and Dissertations

Perceived self-efficacy has been shown to be an accurate predictor of one's performance capabilities (Zimmerman, 2000). Low levels of perceived self-efficacy have been found to correlate with negative performance outcomes; while high levels of perceived self-efficacy correlate with positive performance outcomes. This construct has also been found to influence an individual's motivation level, goal setting ability, and risk for depression (Resnick, 2002; Phillips & Gully, 1997; Blazer, 2002). Therefore, perceived levels of self-efficacy may predict and influence performance of individuals with aphasia during a treatment program. However, the influence of self-efficacy on treatment for aphasia has not been sufficiently studied. …

Helping Break The Cycle Of School Violence And Aggression: A Program Evaluation Of The Owning Up Curricula, Stephanie T. Mihalas

USF Tampa Graduate Theses and Dissertations

This study explored the effects of a gender-based violence prevention program called Owning Up on a group of middle school students in Tampa, Florida. The majority of participants were African-American at-risk youth who voluntarily participated in the intervention. This study is novel in that it is one of the first to empirically validate curricula that addresses an array of aggressive behaviors. A mixed methods design was used to gain insight into significant changes over time, as well as treatment integrity throughout the implementation. Findings from the study found females to be more aggressive than males on all forms of aggression …

Job Satisfaction Of Community College Academic Deans, Donald Gary Goff

USF Tampa Graduate Theses and Dissertations

The purpose of this study was to conduct a national survey to examine job satisfaction of community college academic deans as measured by the Minnesota Satisfaction Questionnaire (MSQ) and an Individual Data Sheet (IDS) and to determine if academic deans will pursue the community college presidency in meeting the current leadership crisis. This study assessed the relationship of selected personal characteristics, unit-related characteristics, facets of job satisfaction, and career aspirations of academic deans. Six research questions directed this study. Four hundred community college academic deans were randomly assigned as participants and represented all 50 states. The usable response rate from …

A Heuristic Methodology For Locating Monitoring Stations To Detect Contamination Events In Potable Water Distribution Systems, James R. Chastain Jr.

USF Tampa Graduate Theses and Dissertations

The requirements to protect public water systems from intentional contamination have expanded in the years following September 11, 2001. The areal extent and non-linear nature of water demand and movement in the distribution system makes efficient location of sampling points difficult. This difficulty is compounded by the fact that contamination conceptually can occur at any point and at any time within the distribution system. Small to mid-sized water systems are especially at a disadvantage in addressing this issue due to limited resources available to them.

This paper proposes a heuristic methodology to identify strategic locations within the system that can …