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Discrete Nonlinear Wave Propagation In Kerr Nonlinear Media, Joachim Meier Jan 2004

Discrete Nonlinear Wave Propagation In Kerr Nonlinear Media, Joachim Meier

Electronic Theses and Dissertations

Discrete optical systems are a subgroup of periodic structures in which the evolution of a continuous electromagnetic field can be described by a discrete model. In this model, the total field is the sum of localized, discrete modes. Weakly coupled arrays of single mode channel waveguides have been known to fall into this class of systems since the late 1960's. Nonlinear discrete optics has received a considerable amount of interest in the last few years, triggered by the experimental realization of discrete solitons in a Kerr nonlinear AlGaAs waveguide array by H. Eisenberg and coworkers in 1998. In this work …

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Slurry Chemistry Effects On Copper Chemical Mechanical Planarization, Ying Luo Jan 2004

Slurry Chemistry Effects On Copper Chemical Mechanical Planarization, Ying Luo

Electronic Theses and Dissertations

Chemical-mechanical Planarization (CMP) has emerged as one of the fastest-growing processes in the semiconductor manufacturing industry, and it is expected to show equally explosive growth in the future (Braun, 2001). The development of CMP has been fueled by the introduction of copper interconnects in microelectronic devices. Other novel applications of CMP include the fabrications of microelectromechanical systems (MEMS), advanced displays, three dimensional systems, and so on (Evans, 2002). CMP is expected to play a key role in the next-generation micro- and nanofabrication technologies (Singh, et al., 2002). Despite the rapid increase in CMP applications, the fundamental understanding of the CMP …

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Ocr: A Statistical Model Of Multi-Engine Ocr Systems, Mercedes Terre Mcdonald Jan 2004

Ocr: A Statistical Model Of Multi-Engine Ocr Systems, Mercedes Terre Mcdonald

Electronic Theses and Dissertations

This thesis is a benchmark performed on three commercial Optical Character Recognition (OCR) engines. The purpose of this benchmark is to characterize the performance of the OCR engines with emphasis on the correlation of errors between each engine. The benchmarks are performed for the evaluation of the effect of a multi-OCR system employing a voting scheme to increase overall recognition accuracy. This is desirable since currently OCR systems are still unable to recognize characters with 100% accuracy. The existing error rates of OCR engines pose a major problem for applications where a single error can possibly effect significant outcomes, such …

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Synthesis And Polymerization Of Bifunctional Five-Membered Cyclic Dithiocarbonates And Their Use As Stabilizers For Magnetic Nan, Mohammed Daoudi Jan 2004

Synthesis And Polymerization Of Bifunctional Five-Membered Cyclic Dithiocarbonates And Their Use As Stabilizers For Magnetic Nan, Mohammed Daoudi

Electronic Theses and Dissertations

Novel bifunctional five-membered cyclic dithiocarbonates (1,3-oxathiolane-2-thione)s were synthesized by the reactions of the corresponding bifunctional oxiranes (epoxides) with carbon disulfide at room temperature with lithium bromide as catalyst. Full characterization of these monomers was performed including elemental analysis, proton and carbon nuclear magnetic resonance (NMR) spectroscopy, gas chromatography-mass spectroscopy, and Fourier transmission infrared (FTIR) spectroscopy. The polyaddition polymerization of 1,3-oxathiolane-2-thione with 1,4-diaminobutane at room temperature resulted in a poly(thiourethane) material. The latter undergoes crosslinking due probably to the autooxidation of the product and formation of disulfide linkages. The five-membered cyclic dithiocarbonate, 5-decyl-1,3-oxathiolane-2-thione, was used a model to demonstrate the usefulness …

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Affordances In The Design Of Virtual Environments, David Charles Gross Jan 2004

Affordances In The Design Of Virtual Environments, David Charles Gross

Electronic Theses and Dissertations

Human-computer interaction design principles largely focus on static representations and have yet to fully incorporate theories of perception appropriate for the dynamic multimodal interactions inherent to virtual environment (VE) interaction. Theories of direct perception, in particular affordance theory, may prove particularly relevant to enhancing VE interaction design. The present research constructs a conceptual model of how affordances are realized in the natural world and how lack of sensory stimuli may lead to realization failures in virtual environments. Implications of the model were empirically investigated by examining three affordances: passability, catchability, and flyability. The experimental design involved four factors for each …

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Acoustic Waves In Lithium Niobate Plates, Ashwini Almad Jan 2004

Acoustic Waves In Lithium Niobate Plates, Ashwini Almad

Electronic Theses and Dissertations

No abstract provided.

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The Rack, The Magazine And The Consumer : An Examination Of Magazine Purchasing Habits At The Newsstand, Geoffrey S. Kohl Jan 2004

The Rack, The Magazine And The Consumer : An Examination Of Magazine Purchasing Habits At The Newsstand, Geoffrey S. Kohl

Electronic Theses and Dissertations

No abstract provided.

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Establishing The Tougaloo College Art Collections : New York School Abstract Expressionists, Artists For Core, And The Art Committee For Tougaloo College, Susan Lloyd Mcclamroch Jan 2004

Establishing The Tougaloo College Art Collections : New York School Abstract Expressionists, Artists For Core, And The Art Committee For Tougaloo College, Susan Lloyd Mcclamroch

Electronic Theses and Dissertations

No abstract provided.

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Possible Use Of P20 Antigen In Serodiagnosis Of Inflammatory Bowel Disease, Shinchieh Yang Jan 2004

Possible Use Of P20 Antigen In Serodiagnosis Of Inflammatory Bowel Disease, Shinchieh Yang

Electronic Theses and Dissertations

Crohn's disease (CD) is an idiopathic, chronic, relapsing inflammatory disorder, which is most commonly involved terminal ileum and colon. The incidence and prevalence of CD has dramatically increased during the last 50 years; however, the etiology and mechanism of this disorder remain unveiled. Besides genetic susceptibility, recent integrated researches investigated the role of environmental triggers such as microflora, measles viruses and mycobacteria in the pathogenesis of CD. The association between M. avium subsp paratuberculosis (MAP) and CD has been heightened because of clinical resemblance to Johne's disease (JD), a granulomatous enteritis in ruminants caused by MAP. Isolation of MAP from …

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Getting Involved : Motivational Programs And Strategies To Influence Adolescent Art Students' And Their Teachers' Involvement In Art Museums, Katherine Patten Jan 2004

Getting Involved : Motivational Programs And Strategies To Influence Adolescent Art Students' And Their Teachers' Involvement In Art Museums, Katherine Patten

Electronic Theses and Dissertations

No abstract provided.

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The Production And Direction Of 'Proof' By David Auburn, Rebecca Bourgeois Jan 2004

The Production And Direction Of 'Proof' By David Auburn, Rebecca Bourgeois

Electronic Theses and Dissertations

No abstract provided.

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A Software-Based Knowledge Management System Using Narrative Texts, Thomas Rudy Mcdaniel Jan 2004

A Software-Based Knowledge Management System Using Narrative Texts, Thomas Rudy Mcdaniel

Electronic Theses and Dissertations

Technical and professional communicators have in recent research been challenged to make significant contributions to the field of knowledge management, and to learn or create the new technologies allowing them to do so. The purpose of this dissertation is to make such a combined theoretical and applied contribution from the context of the emerging discipline of Texts and Technology. This dissertation explores the field of knowledge management (KM), particularly its relationship to the related study of artificial intelligence (AI), and then recommends a KM software application based on the principles of narratology and narrative information exchange. The focus of knowledge …

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A Rhetoric Of Technology: The Discourse In U.S. Army Manuals And Handbooks, Sherry Ann Steward Jan 2004

A Rhetoric Of Technology: The Discourse In U.S. Army Manuals And Handbooks, Sherry Ann Steward

Electronic Theses and Dissertations

This dissertation examines the historical technical publications of the United States Army from 1775-2004. Historical research in Army technical communication reveals the persuasive characteristics of its technical publications. Elements of narrative, storytelling, and anthropomorphism are techniques writers used to help deliver information to readers. Research also reveals the design techniques writers adopted to unite the situated literacies of the troops. Analyses of print, comic, and digital media expose the increasing visualization of information since the eighteenth century. The results of such historical research can be applied to new media designs. Automating processes captured in paper-based technical manuals and adding intelligent …

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The Self-Perceptions Of Adolescents With Attention Deficit Hyperactivity Disorder, Patricia Bitar Jan 2004

The Self-Perceptions Of Adolescents With Attention Deficit Hyperactivity Disorder, Patricia Bitar

Electronic Theses and Dissertations

Attention Deficit Hyperactivity Disorder (ADHD), which affects 3 -- 6% of school- aged children, is considered one of the most common behavioral disorders of childhood. Of those, up to 70% will continue to have symptoms into adolescence. Adolescence is a critical transitional period on the route to adulthood that has the building of self-identity as its chief developmental task. Adults with positive self-perceptions tend to be more productive members of society. Most of the studies directed at understanding the self-perceptions of those with ADHD have been done with children and those studies have yielded mixed results. There are practically no …

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The Importance Of Cmos Sensor Surface Topography In The Attachment, Proliferation, And Differentiation Of Human Adult Mesenchymal Stem Cells, Christa Y. Heyward Jan 2004

The Importance Of Cmos Sensor Surface Topography In The Attachment, Proliferation, And Differentiation Of Human Adult Mesenchymal Stem Cells, Christa Y. Heyward

Electronic Theses and Dissertations

Osteoblasts and osteoblast precursor cells (mesenchymal stem cells) respond to the surface topography of metal implants by aligning along surface features in order to minimize shear stress. While several previous studies have investigated the morphology, attachment and proliferation of both osteoblasts and mesenchymal stem cells along grooved surfaces, the current study investigates the cellular response to depressions and peaks in surface topography, as well as surfaces that contain alternating combinations of depressions and peaks. The Complementary Metal Oxide Semiconductor (CMOS) sensor is a transducer fabricated from silicon and sputter coated with titanium. The CMOS sensor is designed to utilize piezoresistive …

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The Role Of Political Behavior And Socio-Economic Development In The Transition And Consolidation Of Liberal Democracy In Sub Saharan Africa, Godfrey Wachira Jan 2004

The Role Of Political Behavior And Socio-Economic Development In The Transition And Consolidation Of Liberal Democracy In Sub Saharan Africa, Godfrey Wachira

Electronic Theses and Dissertations

The study utilizes the multivariate regression techniques to investigate the role of political behavior; power structure (at the micro level) and socio economic development (macro level) in the transition and consolidation of democracy in Sub Saharan Africa. In the analysis, political behavior, defined as the acceptance of political elites to accommodate divergent views, is the most significant predictor of democracy in the region. Socio economic development is a necessary but not sufficient condition for the consolidation of democracy in the region. In conclusion, I argue that Sub Saharan African nations must pursue both political and economic liberalization which entails the …

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The Rhetorical Dimensions Of Radio Propaganda In Nazi Germany, 1933-1945, Frank Rybicki Jan 2004

The Rhetorical Dimensions Of Radio Propaganda In Nazi Germany, 1933-1945, Frank Rybicki

Electronic Theses and Dissertations

The intrinsic power and subtle influence of broadcasting is not readily recognized by the average consumer of mass media. This circumstance has an abusive potential for those wishing to use the electronic media for ulterior motives. Such was the case between 1933 and 1945 when the Nazis unleashed their manipulative mass media campaign that helped facilitate totalitarian control over the German people. This dissertation is the study of its radio component. Special emphasis is placed on the origins, construction, and subsequent implementation of Nazi broadcast rhetoric heard on domestic and short wave radio during the twelve-year period of the Third …

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The Role Of Teacher Education Experiences In Addressing The Concerns Of Apprentice Teachers, Mary Mcvey Jan 2004

The Role Of Teacher Education Experiences In Addressing The Concerns Of Apprentice Teachers, Mary Mcvey

Electronic Theses and Dissertations

This study investigated the role of a teacher education program in helping apprentice teachers to address their teaching concerns. Quantitative and qualitative analyses of program data were used to answer the following questions: What are the concerns of apprentice teachers? Do they differ between public and private school teachers? Do they differ between elementary and middle school teachers? How well did the teacher education program at Franciscan University help teachers to be prepared to address their concerns and does preparedness differ between public and private, and elementary and middle school teachers? What program experiences were perceived as most effective in …

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Block Copolymer Stabilized Self-Assembled Magnetic Nanoparticles, Li Zhang Jan 2004

Block Copolymer Stabilized Self-Assembled Magnetic Nanoparticles, Li Zhang

Electronic Theses and Dissertations

Magnetic materials are currently being developed in the areas of pharmacology and medicinal chemistry for use in applications such as drug delivery and magnetic resonance imaging. Magnetic fluids are being used in audio equipment and hard disk drives. Their suspension in a particular fluid is promoted by the adsorption or reaction of steric or electrostatic stabilizers, which are appropriate for the particular medium. Critical to the success of these magnetic fluids is the development of the steric stabilizers, which must prevent the coagulation of the metal particles. Polymeric materials are one of the most suitable nonmagnetic media to disperse the …

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A Case Study Of The Libraries In The Vanguard Learning Colleges, Linda G. Swaine Jan 2004

A Case Study Of The Libraries In The Vanguard Learning Colleges, Linda G. Swaine

Electronic Theses and Dissertations

This study was conducted to determine the characteristics of a learning-centered library from the perspective of the libraries in the 12 Vanguard Learning Colleges which were participants in the Learning College Project sponsored by the League for Innovation in the Community College. The 12 Vanguard Learning Colleges were: Cascadia Community College (WA), Community College of Baltimore County (MD), Community College of Denver (CO), Humber College, (Ontario), Kirkwood Community College (IA), Lane Community College, OR), Madison Area Technical College (WI), Moraine Valley Community College (IL), Palomar College (CA), Richland College (TX), Sinclair Community College (OH), and Valencia Community College (FL). Furthermore, …

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Multiple Scattering Of Light In Inhomogeneous Media And Applications, Claudia Mujat Jan 2004

Multiple Scattering Of Light In Inhomogeneous Media And Applications, Claudia Mujat

Electronic Theses and Dissertations

Light scattering-based techniques are being developed for non-invasive diagnostics of inhomogeneous media in various fields, such as medicine, biology, and material characterization. However, as most media of interest are highly scattering and have a complex structure, it is difficult to obtain a full analytical solution of the scattering problem without introducing approximations and assumptions about the properties of the system under consideration. Moreover, most of the previous studies deal with idealized scattering situations, rarely encountered in practice. This dissertation provides new analytical, numerical, and experimental solutions to describe subtle effects introduced by the properties of the light sources, and by …

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Nascar Restrictor Plate Exhaust Manifold Design Strategies, Matthew John Dollhopf Jan 2004

Nascar Restrictor Plate Exhaust Manifold Design Strategies, Matthew John Dollhopf

Electronic Theses and Dissertations

This paper presents the results of a study on exhaust manifold design for a NASCAR Restrictor plate internal combustion engine. A computer simulation model was developed using Ricardo WAVE software. WAVE is a computer-aided engineering code developed by Ricardo to analyze the dynamics of pressure waves, mass flows and energy losses in ducts, plenums and the intake and exhaust manifolds of various systems and machines. [1] The model was validated against experimental data from a current NASCAR Winston Cup restrictor plate motor. The parameters studied have been exhaust manifold diameters and lengths. A response surface analysis of the simulation output …

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Surface Chemistry Of Application Specific Pads And Copper Chemical Mechanical Planarization, Sameer Arun Deshpande Jan 2004

Surface Chemistry Of Application Specific Pads And Copper Chemical Mechanical Planarization, Sameer Arun Deshpande

Electronic Theses and Dissertations

Advances in the interconnection technology have played a key role in the continued improvement of the integrated circuit (IC) density, performance and cost. Copper (Cu) metallization, dual damascenes processing and integration of copper with low dielectric constant material are key issues in the IC industries. Chemical mechanical planarization of copper (CuCMP) has emerged as an important process for the manufacturing of ICs. Usually, Cu-CMP process consists of several steps such as the removal of surface layer by mechanical action of the pad and the abrasive particles, the dissolution of the abraded particles in the CMP solution, and the protection of …

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Ownership Diversity Within The Media Industry: Trends And Current Conditions, Thomas E. Vizcarrondo Jan 2004

Ownership Diversity Within The Media Industry: Trends And Current Conditions, Thomas E. Vizcarrondo

Electronic Theses and Dissertations

This study seeks to determine if media ownership diversity remains at levels widely considered to be competitive and acceptable, despite consolidation within the media industry. The research augments the many studies analyzing programming diversity within the U. S. media industry. Rather than analyzing programming content, this study addresses ownership diversity by examining the diversity of media ownership within the context U. S. model, considered to be more of a decentralized, market-driven media industry when compared to other countries such as the United Kingdom or Canada. To measure diversity, the HerfindahlHirschman Index (HHI)—a measure of economic diversity widely used by economists …

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Gun Ownership Trends In The United States, 1973-2000, Jason Michael Ruckert Jan 2004

Gun Ownership Trends In The United States, 1973-2000, Jason Michael Ruckert

Electronic Theses and Dissertations

In the last half century, gun ownership has been one of the most hotly debated topics in the United States. The right to bear arms was written into the U. S. Constitution and into the hearts and minds of its citizens. During the last half century, however, numerous gun control laws have been enacted at Federal, state and local levels, and it can be argued (plausibly or not) that part of the legislative intent has been to decrease the number of gun owning households in the United States. For many decades, this number hovered at one half of all households …

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Basic Study Of Micromachined Dep (Dielectrophoretic) Manipulator, Vivek Sundaram Jan 2004

Basic Study Of Micromachined Dep (Dielectrophoretic) Manipulator, Vivek Sundaram

Electronic Theses and Dissertations

The capability of manipulating microparticle in small volumes is fundamental to many biological and medical applications, including separation and detection of cells. The development of microtools for effective sample handling and separation in such volumes is still a challenge. DEP (dielectrophoresis) is one of the most widely used methods in handling the microparticles. In this thesis we show that forces generated by nonuniform electric field (DEP) can be used for trapping and separating the microparticles (latex beads). This work further explores the DEP force based on different electrode geometries and medium conductivity. A micromanipulator for latex bead separation was designed, …

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Awareness, Knowledge, And Attitude About Environmental Education: Resp, Rodrigo Melchor Cruz Lasso De La Vega Jan 2004

Awareness, Knowledge, And Attitude About Environmental Education: Resp, Rodrigo Melchor Cruz Lasso De La Vega

Electronic Theses and Dissertations

Over the last 30 years, environmental education has been part of the curriculum in Southwest Florida public schools. Curriculum objectives, such as, environmental attitude, knowledge, and awareness (AKA), have been investigated in the literature as ways to improve the overall behavior of future citizens toward the environment. The purpose of this study was to evaluate the aforementioned objectives among the following groups: environmental specialists, high school instructors, high school students, and the parents of the corresponding students in three Southwest Florida counties during the 2003-2004 school year. An instrument was developed to measure the groups' levels of awareness, knowledge, and …

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Detection And Evaluation Of Exisiting Pavement System With Brick Base, Karishma Desai Jan 2004

Detection And Evaluation Of Exisiting Pavement System With Brick Base, Karishma Desai

Electronic Theses and Dissertations

At the turn of the century, the City of Orlando initiated the "Neighborhood Horizon Program." This program involved local citizens to help improve their community resources by engaging in a process of planning where the problems associated with the communities were identified. Many residents favored to bring back the brick roads that were overlaid with asphalt concrete to provided better transportation in the mid 1900s. With majority of the neighborhood streets already bricked, removing asphalt ensured safety, served as a technique for slowing traffic, and added to the historical integrity. Since there were no official documentations available that stated the …

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Degradation Of Halogenated Aliphatic Compounds In Sequential Anaerobic, Scott Hoxworth Jan 2004

Degradation Of Halogenated Aliphatic Compounds In Sequential Anaerobic, Scott Hoxworth

Electronic Theses and Dissertations

The objective of this study was to utilize an alternating anaerobic/aerobic sequence to biologically transform perchloroethylene to non-hazardous end products such as ethylene, CO2 and H2 using a single microbial consortia in a methanogenic and/or a homoacetogenic environment followed by a aerobic methanotrophic environment. Reductive dechlorination of PCE and TCE to cDCE and VC in an anaerobic environment is typically carried out by methanogens, sulfidogens, or homoacetogens but often (e.g. in-situ) leads to an accumulation of daughter compounds (cDCE, VC) which are more toxic than their parent compounds (PCE, TCE). Furthermore, PCE is resistant to degradation in aerobic environments while …

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Evaluation Of Immunogenicity Of Transgenic Chloroplast Derived Protect, Vijay Koya Jan 2004

Evaluation Of Immunogenicity Of Transgenic Chloroplast Derived Protect, Vijay Koya

Electronic Theses and Dissertations

Anthrax, a fatal bacterial infection is caused by Bacillus anthracis, a gram-positive, spore forming, capsulated, rod shaped organism. Centers for Disease Control (CDC) lists anthrax as Category A biological agent due to its severity of impact on human health, high mortality rate, acuteness of the disease and potential for delivery as a biological weapon. The currently available human vaccine in the United States (AVA anthrax vaccine adsorbed) is prepared from Alum adsorbed formalin treated supernatant culture of toxigenic, non-encapsulated strain of Bacillus anthracis with the principle component being protective antigen (PA83). Evaluation of anthrax vaccine given to nearly 400,000 US …

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