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2009

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A Hypergraph Regularity Method For Linear Hypergraphs, Shoaib Amjad Khan Jan 2009

A Hypergraph Regularity Method For Linear Hypergraphs, Shoaib Amjad Khan

USF Tampa Graduate Theses and Dissertations

Szemerédi's Regularity Lemma is powerful tool in Graph Theory, yielding many applications in areas such as Extremal Graph Theory, Combinatorial Number Theory and Theoretical Computer Science. Strong hypergraph extensions of graph regularity techniques were recently given by Nagle, Rödl, Schacht and Skokan, by W.T. Gowers, and subsequently, by T. Tao. These extensions have yielded quite a few non-trivial applications to Extremal Hypergraph Theory, Combinatorial Number Theory and Theoretical Computer Science. A main drawback to the hypergraph regularity techniques above is that they are highly technical. In this thesis, we consider a less technical version of hypergraph regularity which more directly …

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Finding Confucianism In Scientology: A Comparative Analysis, John Albert Kieffer Jan 2009

Finding Confucianism In Scientology: A Comparative Analysis, John Albert Kieffer

USF Tampa Graduate Theses and Dissertations

Scientology holds considerable interest for scholars of new religious movements. As such, this study aims to contribute new data and insight to ongoing theoretical work within this area of religious studies scholarship. Engaged in this inquiry are the similarities between Scientology, the new religious movement founded in 1951 by L. Ron Hubbard (1911-1986), and the Chinese religion, Confucianism, which originates with the teachings of Confucius (551-479 BCE). Though Hubbard admits being influenced by eastern thinking such as Buddhism and Daoism in shaping his worldview, he specifically discounts Confucius as relevant in this regard. However, through comparisons between Scientology and Confucianism, …

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Numerical Heat Transfer During Partially–Confined, Confined, And Free Liquid Jet Impingement With Rotation And Chemical Mechanical Planarization Process Modeling, Jorge C. Lallave-Cortes Jan 2009

Numerical Heat Transfer During Partially–Confined, Confined, And Free Liquid Jet Impingement With Rotation And Chemical Mechanical Planarization Process Modeling, Jorge C. Lallave-Cortes

USF Tampa Graduate Theses and Dissertations

No abstract provided.

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Multiple Approaches To The Validation Of The Scores From The Study Anxiety Inventory, George Douglas Lunsford Jan 2009

Multiple Approaches To The Validation Of The Scores From The Study Anxiety Inventory, George Douglas Lunsford

USF Tampa Graduate Theses and Dissertations

The Study Anxiety Inventory (SAI), consisting of the factors of worry and emotionality, was developed to measure college students' self-reported levels of anxiety while studying for an exam. Data from 2002 undergraduate students from four colleges (Arts and Sciences, Engineering, Business, and Education) at a southeastern state university were used to evaluate the validity of the scores from the 16-item Study Anxiety Inventory. Results of confirmatory factor analyses for the two factor model, conducted separately for each college, indicated marginally acceptable fit for the data (median fit measures across the four colleges: CFI =.915, SRMR=.049, RMSEA=.098), a pattern that was …

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Mixture Distributions With Application To Microarray Data Analysis, O'Neil Lynch Jan 2009

Mixture Distributions With Application To Microarray Data Analysis, O'Neil Lynch

USF Tampa Graduate Theses and Dissertations

The main goal in analyzing microarray data is to determine the genes that are differentially expressed across two types of tissue samples or samples obtained under two experimental conditions. In this dissertation we proposed two methods to determine differentially expressed genes. For the penalized normal mixture model (PMMM) to determine genes that are differentially expressed, we penalized both the variance and the mixing proportion parameters simultaneously. The variance parameter was penalized so that the log-likelihood will be bounded, while the mixing proportion parameter was penalized so that its estimates are not on the boundary of its parametric space. The null …

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Photography’S Creative Influence On Lewis Carroll’S Alice’S Adventures In Wonderland And Through The Looking Glass And What Alice Found There, Bridget Mahoney Jan 2009

Photography’S Creative Influence On Lewis Carroll’S Alice’S Adventures In Wonderland And Through The Looking Glass And What Alice Found There, Bridget Mahoney

USF Tampa Graduate Theses and Dissertations

Lewis Carroll's novels Alice's Adventures in Wonderland and Through the Looking Glass and What Alice Found There share many characteristics with the author's photographs. Both Carroll's portraits and literature utilize dreamlike imagery to move beyond the present time and space into a dream world. The similar imagery demonstrates an important creative link between Carroll's novels and photographs. The creation of Carroll's masterpiece, Alice's Adventures in Wonderland and its sequel, Through the Looking Glass and What Alice Found There, creatively depended on the photographic images Carroll produced. Utilizing the four step process of creativity generally accepted by psychologists, Carroll's photographs are …

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Teaching Social Studies In An Age Of Globalization: A Case Study Of Secondary Social Studies Teachers’ Participation In The Una-Usa’S Global Classrooms Curriculum Program, Kelly R. Miliziano Jan 2009

Teaching Social Studies In An Age Of Globalization: A Case Study Of Secondary Social Studies Teachers’ Participation In The Una-Usa’S Global Classrooms Curriculum Program, Kelly R. Miliziano

USF Tampa Graduate Theses and Dissertations

The researcher found few studies that explore decisions of social studies teachers as they plan what and how to teach their classes. Over a century, social studies educators have adapted and responded to political, social, and economic changes. From educating immigrants a century earlier to addressing contemporary cross-border issues, social studies educators inherit unique challenges in today's increasingly globalized world. In addition to these external forces, constraints are placed on teachers which prescribe what content must be included in an already crowded curriculum. This qualitative approach using a case study provides a better understanding of the influence a globally oriented …

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Characterization Of Electrowetting Systems For Microfluidic Applications, Pradeep K. Mishra Jan 2009

Characterization Of Electrowetting Systems For Microfluidic Applications, Pradeep K. Mishra

USF Tampa Graduate Theses and Dissertations

Electrowetting is the change in apparent surface energy in the presence of an electric field. Recently, this phenomenon has been used to control the shape and location of individual droplets on a surface. However, many microfluidics researchers have acknowledged unexplained behaviors and performance degradation. In this work, electrowetting systems are characterized with different methods. The electrowetting response is measured by measuring contact angle for different applied voltages. A novel technique for direct measurement of Electrowetting Force (EWF) using nano indenter is proposed in this work. The EWF measurements show that, for aqueous solution the EWF is more as compared to …

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Gallium Nitride Sensors For Hydrogen/Nitrogen And Hydrogen/Carbon Monoxide Gas Mixtures, Christopher Nicholas Monteparo Jan 2009

Gallium Nitride Sensors For Hydrogen/Nitrogen And Hydrogen/Carbon Monoxide Gas Mixtures, Christopher Nicholas Monteparo

USF Tampa Graduate Theses and Dissertations

As hydrogen is increasingly used as an energy carrier, gas sensors that can operate at high temperatures and in harsh environments are needed for fuel cell, aerospace, and automotive applications. The high temperature Fischer-Tropsch process also uses mixtures of hydrogen and carbon monoxide to generate synthetic fuels from non-fossil precursors. As the Fischer-Tropsch process depends upon particular gas mixtures to generate various fuels, a sensor which can determine the proper ratio of reactants is needed. To this end, gallium nitride (GaN) has been used to fabricate a resistive gas sensor. GaN is a suitable semiconductor to be used in hydrogen …

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Ecis Assessment Of Cytotoxicity And Trans-Endothelial Migration Of Metastatic Cancer Cells, Daniel Opp Jan 2009

Ecis Assessment Of Cytotoxicity And Trans-Endothelial Migration Of Metastatic Cancer Cells, Daniel Opp

USF Tampa Graduate Theses and Dissertations

The investigations conducted within this dissertation centers around the use of electric cell-substrate impedance sensing (ECIS). This system is able to characterize in real-time analysis, the adhesion of cells to their substrate and neighboring cells. With this, valuable information can be gathered with in-vitro experiments regarding a tissue culture's response to physiological stimulation. This dissertation has taken advantage of ECIS' ability to analyze toxicology, barrier function, and cancer invasion on a tissue culture. With proper analysis modifications, trans-epethelial resistance (TER) can be used as a cytotoxicity assay with higher sensitivity than previously thought. In vitro assessment of cytotoxicity based on …

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Exploring Efficient Design Approaches For Display Of Multidimensional Data To Facilitate Interpretation Of Information, Chitra S. Pathiavadi Jan 2009

Exploring Efficient Design Approaches For Display Of Multidimensional Data To Facilitate Interpretation Of Information, Chitra S. Pathiavadi

USF Tampa Graduate Theses and Dissertations

Prescriptions for effective display of quantitative information involving more than two variables are not available. To explore the effectiveness of retinal variables in facilitating the interpretation of information and decision making when used in conjunction, a study with 135 participants was conducted. The study involved the use of color shape, color value, and value shape as retinal variables in interactive displays that required participants to answer nine questions in three levels of complexity (identification of data points, analyses of local comparisons and global trends). Time-on-task scores and performance scores were measured. In addition, a View Clamp eye tracker system was …

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An Explanatory Examination Of Relationships Between Measures Of School And Student Socioeconomic Status And Reading And Math Achievement Of Hispanic Limited English Proficient (Lep) High School Students, Osvaldo Piedra Jan 2009

An Explanatory Examination Of Relationships Between Measures Of School And Student Socioeconomic Status And Reading And Math Achievement Of Hispanic Limited English Proficient (Lep) High School Students, Osvaldo Piedra

USF Tampa Graduate Theses and Dissertations

Hispanics are the largest and fastest growing minority population in the U.S. requiring limited English proficiency services (Guglielmi, 2008). Many schools and school districts place heavy emphasis on high stakes testing. The No Child Left Behind (NCLB) Act of 2001 requires all children to have access to a fair, equal, and high-quality education. Many schools and school districts focus on individual students to show grade level performance for small populations such as limited English proficient (LEP) students. The purpose of this study was to examine the question, "What was the relationship between measures of school and student socioeconomic status, and …

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Digital Holography Applications In Ophthalmology, Biometry, And Optical Trapping Characterization, Mariana Camelia Potcoava Jan 2009

Digital Holography Applications In Ophthalmology, Biometry, And Optical Trapping Characterization, Mariana Camelia Potcoava

USF Tampa Graduate Theses and Dissertations

This dissertation combines various holographic techniques with application on the two- and three-dimensional imaging of ophthalmic tissue, fingerprints, and microsphere samples with micrometer resolution. Digital interference holography (DIH) uses scanned wavelengths to synthesize short-coherence interference tomographic images. We used DIH for in vitro imaging of human optic nerve head and retina. Tomographic images were produced by superposition of holograms. Holograms were obtained with a signal-to-noise ratio of approximately 50 dB. Optic nerve head characteristics (shape, diameter, cup depth, and cup width) were quantified with a few micron resolution (4.06 -4.8 microns). Multiple layers were distinguishable in cross-sectional images of the …

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Cocrystals Of Nutraceuticals: Protocatechuic Acid And Quercetin, Twarita Anil Pujari Jan 2009

Cocrystals Of Nutraceuticals: Protocatechuic Acid And Quercetin, Twarita Anil Pujari

USF Tampa Graduate Theses and Dissertations

The cocrystallization of two or more pure compounds by crystal engineering to create a new functional material is of a great academic and industrial interest. Pharmaceutical cocrystallization has allured a lot of attention by means of altering the physicochemical properties of Active Pharmaceutical Ingredient (API) such as solubility, stability and bioavailability. Crystal engineering of nutraceuticals can produce novel compounds such as pharmaceutical cocrystals. To establish the importance of nutraceutical cocrystallization and its use; polyphenols, a major class of nutraceuticals and potential disease preventing agents, are the appropriate targets. The work herein focuses on two polyphenols, protocatechuic acid and quercetin, which …

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Determination Of Nanogram Mass And Measurement Of Polymer Solution Free Volume Using Thickness-Shear Mode (Tsm) Quartz Resonators, Anthony James Richardson Jan 2009

Determination Of Nanogram Mass And Measurement Of Polymer Solution Free Volume Using Thickness-Shear Mode (Tsm) Quartz Resonators, Anthony James Richardson

USF Tampa Graduate Theses and Dissertations

More commonly referred to as a quartz crystal microbalance (QCM), thickness-shear mode (TSM) quartz resonator devices utilize an acoustic wave to establish a bulk-detection mechanism prompting their utilization as gravimetric sensors with nanogram mass sensitivity and capability to measure various film property dynamics, due to variations in the system environment, of thin-films that are uniformly distributed across the resonator surface. The development of an absolute TSM-based nanobalance and an experimental technique using conventional TSM resonators for the real-time measurement of the change in the viscoelastic shear modulus and fractional free-hole volume of a poly(isobutylene) film due to the sorption of …

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Calculating The Volume Of The May 18, 1980 Eruption Of Mount St. Helens, Dâvid Nuñez Wickham Jan 2009

Calculating The Volume Of The May 18, 1980 Eruption Of Mount St. Helens, Dâvid Nuñez Wickham

Environmental Science and Management Professional Master's Project Reports

The May 18, 1980 eruption of Mount St. Helens created a massive amount of sediment and debris, thought to be as much as 5.5 billion cubic yards. This sediment causes infill of river stretches and collects along levees protecting southwest Washington State. The sediment must be removed to ensure these areas do not flood. The US Army Corps of Engineers (USACOE) is tasked with flood protection for southwest Washington State and the levees protecting the cities of Castle Rock, Lexington, Kelso, and Longview. The Sediment Retention Dam, opened in 1989 is able to filter out larger particulate but fine grain …

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Downspout Disconnection Suitability And Incentives Analysis For The City Of Gresham, Oregon, Brian C. Fletcher Jan 2009

Downspout Disconnection Suitability And Incentives Analysis For The City Of Gresham, Oregon, Brian C. Fletcher

Environmental Science and Management Professional Master's Project Reports

The City of Gresham is developing a Downspout Disconnection Program, which encourages homeowners to disconnect their roof downspouts from the storm sewer system and divert the stormwater onto their lawn or rain garden. Downspout disconnection is being evaluated for its effectiveness to help the city meet stormwater discharge requirements in their NPDES-MS4 permit from Oregon DEQ. This study reviewed current Natural Resources Conservation Service (NRCS) soil data and developed a suitability map showing High, Medium and Low suitability zones for on-site stormwater management. To validate the map, 55 soil textural classes and 11 infiltration rates were determined at residences throughout …

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Esl Placement And Schools: Effect On Immigrant Achievement, Rebecca Callahan, Lindsey Wilkinson, Chandra Muller, Michelle Frisco Jan 2009

Esl Placement And Schools: Effect On Immigrant Achievement, Rebecca Callahan, Lindsey Wilkinson, Chandra Muller, Michelle Frisco

Sociology Faculty Publications and Presentations

In this study, the authors explore English as a Second Language (ESL) placement as a measure of how schools label and process immigrant students. Using propensity score matching and data from the Adolescent Health and Academic Achievement Study and the National Longitudinal Study of Adolescent Health, the authors estimate the effect of ESL placement on immigrant achievement. In schools with more immigrant students, the authors find that ESL placement results in higher levels of academic performance; in schools with few immigrant students, the effect reverses. This is not to suggest a one-size-fits-all policy; many immigrant students, regardless of school composition, …

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Spatial Patterns Of Air Toxins In The Region, Linda Acha George, Vivek Shandas Jan 2009

Spatial Patterns Of Air Toxins In The Region, Linda Acha George, Vivek Shandas

Urban Studies and Planning Faculty Publications and Presentations

This Atlas draws on the Portland Air Toxics Assessment (PATA) study to explore the regional variation of air quality. The PATA study presents an extraordinary opportunity to think about how the creation of new information can help us better plan our cities, but it also challenges us to think about the impacts of the choices we make.

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Community-Engaged Scholarship In Higher Education: An Expanding Experience, Judith A. Ramaley Jan 2009

Community-Engaged Scholarship In Higher Education: An Expanding Experience, Judith A. Ramaley

Public Administration Faculty Publications and Presentations

Higher education in this country has always been expected to serve the public good. Sometimes, the emphasis is on preparing educated citizens or practitioners in especially critical fields and how public service can deepen and enrich learning and prepare students to lead purposeful, responsible, and creative lives. Sometimes the focus is upon institutions themselves as major intellectual and cultural resources for a community. In this paper, based on the keynote presentation at the Community -- Engaged Scholarship for Health Collaborative's invitational symposium, the author explores four levels of engagement: the individual, the academic community and its concepts of scholarship, the …

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A Novel Synthesis And Characterization Of Fluorescein Isothiocyanate Labeled Poly(Styrenesulfonate Sodium Salt), Xiaowei Tong Jan 2009

A Novel Synthesis And Characterization Of Fluorescein Isothiocyanate Labeled Poly(Styrenesulfonate Sodium Salt), Xiaowei Tong

LSU Master's Theses

The diffusion of polyelectrolytes in low-salt or salt-free aqueous solutions is a controversial question. It has been intensively discussed since it was discovered in 1978. Most previous experimental data were obtained from dynamic light scattering (DLS), whose precision, however, was reduced by stringent sample preparation and weak scattering of polyelectrolyte in low-salt solution. For the most commonly studied polyelectrolyte, poly(styrenesulfonate sodium salt) (NaPSS), the harsh polymerization condition and the manufacturing procedure lead to hydrophobic defects and aggregations, which also block a correct insight about the diffusion of polyelectrolyte. In contrast to DLS, fluorescence photobleaching recovery (FPR) directly looks on the …

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Using The Lesson Study Approach To Plan For Student Learning, Susan J. Lenski, Micki M. Caskey, Vincent A. Anfara Jr. Jan 2009

Using The Lesson Study Approach To Plan For Student Learning, Susan J. Lenski, Micki M. Caskey, Vincent A. Anfara Jr.

Curriculum and Instruction Faculty Publications and Presentations

The Lesson Study approach is a method of professional development that encourages teachers to reflect on their teaching practice through a cyclical process of collaborative lesson planning, lesson observation, and examination of student learning. This results-oriented professional development model is an ideal vehicle for improving instructional practice in middle schools. Characteristically, middle schools are (a) learning communities where teachers and students engage in active learning, (b) places with high expectations for every member of the community, and (c) organizational structures that support meaningful relationships (National Middle School Association, 2003). Middle school teachers have to know their students well—who they are …

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The Modification, System Software Development, Validation, And Clinical Trial Of A Novel Ankle Stiffness Testing Device, T. Tyler Clement Jan 2009

The Modification, System Software Development, Validation, And Clinical Trial Of A Novel Ankle Stiffness Testing Device, T. Tyler Clement

LSU Master's Theses

The purpose of this project is to modify, validate, and gather preliminary clinical data on a novel ankle stiffness device that measures stiffness (torque / degree) and range of motion (ROM) of the ankle joint complex (AJC). The initial device was designed by a mechanical engineering design group at Louisiana State University in 2006, but had not been tested on human participants. Clinical evaluation of the ankle joint is important in patients afflicted with diabetes mellitus, Hansen’s disease, or peripheral neuropathies. The combination of peripheral neuropathies, decreased ankle range of motion, and increased stiffness pose a threat to these patients, …

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Framework For Operability Assessment Of Production Facilities: An Application To A Primary Unit Of A Crude Oil Refinery, Sampath Yela Jan 2009

Framework For Operability Assessment Of Production Facilities: An Application To A Primary Unit Of A Crude Oil Refinery, Sampath Yela

LSU Master's Theses

This work focuses on the development of a methodology for the optimization, control and operability of both existing and new production facilities through an integrated environment of different technologies like process simulation, optimization and control systems. Such an integrated environment not only creates opportunities for op¬erational decision making but also serves as training tool for the novice engineers. It enables them to apply engineering expertise to solve challenges unique to the process industries in a safe and virtual environment and also assist them to get familiarize with the existing control systems and to understand the fundamentals of the plant operation. …

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Supercritical Fluid Extraction And Analysis Of Plant Oils, Tianchuan Du Jan 2009

Supercritical Fluid Extraction And Analysis Of Plant Oils, Tianchuan Du

LSU Master's Theses

Supercritical fluid extraction (SFE) of oxeye daisy (Chrysanthemum leucanthemum L.) seed, heartwood of Port-Orford cedar (POC) (Chamaecyparis lawsoniana), Alaska yellow cedar (AYC) (Chamaecyparis nootkatensis), and Eastern red cedar (ERC) (Juniperus virginiana L), and Chinese tallow (Sapium sebiferum L. Roxb. ) seed was investigated in this study and compared with other extraction methods. For the oxeye daisy seed extraction, Soxhlet extraction (SE) with hexane, microwave assisted extraction (MAE), and supercritical fluid extraction (SFE) were conducted. The results showed that as the extraction temperature decreased from 100 °C, the extraction rate increased until 30 °C using SFE. With an increase of extraction …

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M. Effects Of Land Use And Habitat On Stream Fish Assemblages In Tributaries Of The Lower Bogue Chitto Watershed, Washington Parish, Louisiana, Brian Michael Ward Jan 2009

M. Effects Of Land Use And Habitat On Stream Fish Assemblages In Tributaries Of The Lower Bogue Chitto Watershed, Washington Parish, Louisiana, Brian Michael Ward

LSU Master's Theses

My research focused on how fish communities are responding to watershed land use and instream habitat in tributaries of the Lower Bogue Chitto River. To address this question I electrofished and seined 10 sites in four tributaries of the Bogue Chitto River a total of 4 times each over the course of 15 months in 2007 and 2008. I characterized habitat by measuring water flow, water depth, substrate size, woody debris, temperature, and dissolved oxygen, and quantified heterotrophic plate counts, nutrients, and chlorophyll a concentrations at the end of the sampling period each year. Watershed land cover was measured with …

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Introduction To Common Native And Potential Invasive Freshwater Plants In Alaska, Vanessa Howard Morgan, Mark Sytsma Jan 2009

Introduction To Common Native And Potential Invasive Freshwater Plants In Alaska, Vanessa Howard Morgan, Mark Sytsma

Center for Lakes and Reservoirs Publications and Presentations

Freshwater aquatic plants are found in most lakes and rivers in Alaska. They range from tiny floating plants that can form mats on a lake surface to emergent plants growing two meters above the water. Aquatic plants are an important part of freshwater environments. They provide food and shelter for a wide variety of insects, fish, mammals, and birds; stabilize shorelines; and form an important link in nutrient cycles. To date, Alaska has had relatively few problems with invasive, non-native aquatic plants. However, invasive aquatic plants pose an increasing threat to human safety and the integrity of native aquatic communities. …

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Student Teachers’ Achievement In Science In The Light Of Some Variables, Mohammed Ai-Shargi Jan 2009

Student Teachers’ Achievement In Science In The Light Of Some Variables, Mohammed Ai-Shargi

Journal of Educational and Psychological Studies

This study aimed at determining the science achievement level of Teachers Colleges' students & its relation to the GPA, the General Secondary School grade, the College & the academic level. To achieve this purpose, an achievement test of 60 items was developed & administered to a sample of 529 college students. The study results were as follows:1. Students’ achievement in science subjects was low.2. There were statistically significant differences between colleges in the overall test mean scores & the Biology Test mean scores in favor of AI-Baha Teachers College.3. There were statistically significant differences between colleges in the Chemistry Test …

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Inverse Scattering Solutions With Applications To Electromagnetic Signal Processing, Jonathan Blackledge, Timo Hamalainen, Jyrki Joutsensalo Jan 2009

Inverse Scattering Solutions With Applications To Electromagnetic Signal Processing, Jonathan Blackledge, Timo Hamalainen, Jyrki Joutsensalo

Articles

When a signal is recorded that has been physically generated by some scattering process (the interaction of electromagnetic, acoustic or elastic waves with inhomogeneous materials, for example), the ‘standard model’ for the signal (i.e. information content convolved with a characteristic Impulse Response Function) is usually based on a single scattering approximation. An additive noise term is introduced into the model to take into account a range of non-deterministic factors including multiple scattering that, along with electronic noise and other background noise sources, is assumed to be relatively weak. Thus, the standard model is based on a ‘weak field condition’ and …

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A Phenomenographic Study Of Introductory Physics Students: Approaches To Problem Solving And Conceptualisation Of Knowledge., Laura Walsh Jan 2009

A Phenomenographic Study Of Introductory Physics Students: Approaches To Problem Solving And Conceptualisation Of Knowledge., Laura Walsh

Doctoral

This phenomenographic study presents a description of the approaches to problem solving and conceptualisation of physics knowledge of introductory physics students, specifically in the context of the Irish higher education system. Much research has been carried out that has shown that physics students are not developing the conceptual knowledge necessary to become adept problem-solvers. This may be due to the traditional physics education assumption that students will develop an understanding of the conceptual nature of physics by repetitively solving quantitative problems. However, research has shown that this is not the case and that education and the curriculum needs to explicitly …

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