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Electronic Theses and Dissertations

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New Organic/Inorganic Hybrid Sol-Gel Nanocomposite Materials For Raman Gain In Fiber Optics, Stephen James Andrasik Jan 2004

New Organic/Inorganic Hybrid Sol-Gel Nanocomposite Materials For Raman Gain In Fiber Optics, Stephen James Andrasik

Electronic Theses and Dissertations

The recent increased availability of additional wavelengths in the telecommunications window of about 1300-1600 nm has generated an interest in new optical materials and devices that can operate outside the normally used regions of 840 nm, 1310 nm, and 1550 nm. Specifically, methods to amplify fiber optical data transmission in the regions where there is limited or no existing methods to achieve amplification is of interest in the chemistry and photonic communities. Raman gain is one method that has been proposed to passively amplify optical data transmission through a distributed process. Amplification is obtained through a nonlinear light scattering process …

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The Combined Effects Of Frequency Of Satisfaction And Domain Equity On Relational Satisfaction, Amanda Dawn Coho Jan 2004

The Combined Effects Of Frequency Of Satisfaction And Domain Equity On Relational Satisfaction, Amanda Dawn Coho

Electronic Theses and Dissertations

Romantic relationship research has yet to identify the relationship between conflict, an interpersonal variable, and equity, an intrapersonal variable. The current study represents the first attempt to understand these variables’ contribution, separately and interactionally, on individual partner’s feelings of relationship satisfaction. A total of 106 undergraduate and graduate participants completed questionnaires gauging their frequency of conflict and perceptions of equity across each of five relational domains: Love, Status/Power, Money, Services, and Sex, in addition to reporting general levels of relationship satisfaction. Data were interpreted in three separate relationships: conflict and satisfaction, equity and satisfaction, and the interaction of conflict and …

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The Effects Of Psuedo-Altruistic Behavior On The Likelihood Of Reciprocity And Perceptions Of The Source, Reagan Rule Jan 2004

The Effects Of Psuedo-Altruistic Behavior On The Likelihood Of Reciprocity And Perceptions Of The Source, Reagan Rule

Electronic Theses and Dissertations

The current study examines the roles of expectancy disconfirmation and pseudo-altruistic behaviors as communication strategies to increase receiver compliance, and their effects on perceptions of the source, including credibility and likeability ratings. While adding to the previous research, this investigation examines the effects on compliance when pseudo-altruistic practices are employed in a sales situation. Additionally, subjects’ compliance responses in the treatment groups are analyzed for relationships between compliance and several possible mediators, including participant’s evaluations of the source, and feelings of obligation and guilt. A focus group was held to discuss the face validity of the scenarios. Additionally, a pilot …

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Tractor-Trailer Simulation And The Assessment Of Training Scenarios For City-Driving: Skill Building In The Area Of Left And Right Turns, James Whitmire Jan 2004

Tractor-Trailer Simulation And The Assessment Of Training Scenarios For City-Driving: Skill Building In The Area Of Left And Right Turns, James Whitmire

Electronic Theses and Dissertations

A simulated inner-city training scenario was found to increase skills in the area of turning when compared with a simulated off-track training scenario. To answer this question, two groups of ten participants (5 women and 5 men) were tested using three scripted scenarios focusing on left and right turns. The first training scenario (control group) is an off-track training scenario, which consists of a large asphalt lot and the use of orange cones; the second training scenario (experimental group) is an inner-city training scenario without the presence of vehicular traffic; and the third scenario (test scenario) is an inner-city scenario …

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The Ecology Of Drift Algae In The Indian River Lagoon, Florida, Julie Lynnae Liss Jan 2004

The Ecology Of Drift Algae In The Indian River Lagoon, Florida, Julie Lynnae Liss

Electronic Theses and Dissertations

To gain an understanding of the ecology of drift algae in the Indian River Lagoon system along the east coast of central Florida, four questions were addressed: 1) What is the composition and rate of accumulation of drift? 2) How much movement and turnover occurs within drift accumulations? 3) Do growth rates differ for drift versus attached algae? 4) Is there a difference in photosynthetic performance in drift versus attached algal species? Manipulative field and laboratory experiments were conducted to address these questions with the green macroalga Codium decorticatum and the red macroalga Gracilaria tikvahiae. Changes in pigment concentration and …

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Multigene Metabolic Engineering Via The Chloroplast Genome, Oscar Nemesio Ruiz Jan 2004

Multigene Metabolic Engineering Via The Chloroplast Genome, Oscar Nemesio Ruiz

Electronic Theses and Dissertations

The vast majority of valuable agronomic traits are encoded polygenetically. Chloroplast genetic engineering offers an alternate approach to multigene engineering by allowing the insertion of entire pathways in a single transformation event, while being an environmentally friendly approach. Stable integration into the chloroplast genome and transcription of the phaA gene coding for β-ketothiolase was confirmed by Southern and northern blots. Coomassie-stained gel and western blots confirmed hyperexpression of β-ketothiolase in leaves and anthers, with high enzyme activity. The transgenic lines were normal except for the male sterile phenotype, lacking pollen. Scanning electron microscopy revealed a collapsed morphology of the pollen …

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Hydrogen Sulfide Flux Measurements And Dispersion Modeling From Constr, Sangho Eun Jan 2004

Hydrogen Sulfide Flux Measurements And Dispersion Modeling From Constr, Sangho Eun

Electronic Theses and Dissertations

Odor problems are a common complaint from residents living near landfills. Many compounds can cause malodorous conditions. However, hydrogen sulfide (h2s) has been identified as a principal odorous component from construction and demolition (c&d)debris landfills. Although several studies have reported the ambient concentrations of h2s near c&d landfills, few studies have quantified emission rates of h2s. The most widely used and proven technique for measuring gas emission rates from landfills is the flux chamber method. Typically the flux chamber is a cylindrical enclosure device with a spherical top which limits the gas emission area. Pure zero grade air is introduced …

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Set A Light In A Dark Place: Teachers Of Freedmen In Florida, 1863-18, Laura Wakefield Jan 2004

Set A Light In A Dark Place: Teachers Of Freedmen In Florida, 1863-18, Laura Wakefield

Electronic Theses and Dissertations

As the Civil War closed and Reconstruction began, a small army of teachers arrived in Florida. Under the auspices of northern aid societies, churches, and educational associations, they proposed to educate the newly emancipated slaves, believing that education would prepare African Americans for citizenship. Teachers found Florida's freedmen determined to acquire literacy by whatever means they could, but they faced a white populace resistant to outsiders. Reformers, politicians, literate blacks, and Yankee businessmen intent on socially, politically, and economically transforming Florida joined educators in reconstructing Florida. Florida's educational system transformed during Reconstruction, and an examination of the reciprocity between Reconstruction-era …

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Filters In Topology : Products Of Fr╩╣Echet Spaces And The Stone Transform, Anh Tran Mynard Jan 2004

Filters In Topology : Products Of Fr╩╣Echet Spaces And The Stone Transform, Anh Tran Mynard

Electronic Theses and Dissertations

No abstract provided.

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Association Discovery In Lung Cancer Microarray Data, Kristin E. Davidson Jan 2004

Association Discovery In Lung Cancer Microarray Data, Kristin E. Davidson

Electronic Theses and Dissertations

No abstract provided.

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Adaptive Intelligent User Interfaces With Emotion Recognition, Fatma Nasoz Jan 2004

Adaptive Intelligent User Interfaces With Emotion Recognition, Fatma Nasoz

Electronic Theses and Dissertations

The focus of this dissertation is on creating Adaptive Intelligent User Interfaces to facilitate enhanced natural communication during the Human-Computer Interaction by recognizing users' affective states (i.e., emotions experienced by the users) and responding to those emotions by adapting to the current situation via an affective user model created for each user. Controlled experiments were designed and conducted in a laboratory environment and in a Virtual Reality environment to collect physiological data signals from participants experiencing specific emotions. Algorithms (k-Nearest Neighbor [KNN], Discriminant Function Analysis [DFA], Marquardt-Backpropagation [MBP], and Resilient Backpropagation [RBP]) were implemented to analyze the collected data signals …

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Modified Sierpinski Fractal Antenna, Tripti Luintel Jan 2004

Modified Sierpinski Fractal Antenna, Tripti Luintel

Electronic Theses and Dissertations

Fractal antennas have the potential to provide multi-band solution through the property of self similarity that the fractal shape possess. This thesis deals with some modifications of the original Sierpinski fractal patch antenna, providing additional parameters to optimize in order to get the required radiation characteristics. A systematic study of the original Sierpinski monopole was done to gain an insight on the operation and multi-band behavior of the antenna and a similar study was done to find out why the patch version of Sierpinski lacks multi-band behavior. A Sierpinski antenna is designed by merging a grid and the fractal restoring …

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Analysis And Integration Of A Debris Model In The Virtual Range Projec, Luis Robledo Jan 2004

Analysis And Integration Of A Debris Model In The Virtual Range Projec, Luis Robledo

Electronic Theses and Dissertations

After the accident of the STS 107 Columbia Space Shuttle, great concern has been focused on the risk associated to the population on the ground. Before this accident happened, re-entry routes as well as risk calculation of were not of public concern. Two issues that have been raised from this lamentable accident relate to spacecraft security and to public safety. The integration of a debris model has been part of the original conceptual architecture of the Virtual Range Project. Its integration has been considered as a specific research due to the complexity of the models and the difficulties to obtain …

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Versatility And Customization Of Portable Cmm In Reverse Engineering A, Amar Raja Thiraviam Jan 2004

Versatility And Customization Of Portable Cmm In Reverse Engineering A, Amar Raja Thiraviam

Electronic Theses and Dissertations

Reverse engineering is the technique of gathering scientific knowledge about a part by physically examining it. In the computer aided manufacturing world this is referred to as Part to CAD conversion, where the geometry of physical objects are being captured as Digital 3-D CAD Data. This is vital not only to produce drawing of parts for which no CAD data exists, but also is frequently being used to produce better designs. The industry professionals to achieve this are frequently using Coordinate Measuring Machine [CMM] among other tools. The purpose of this thesis is to demonstrate the versatility of portable CMM …

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Evaluation Of A Microwave Radiative Transfer Model For Calculating Sat, Simonetta Thompson Jan 2004

Evaluation Of A Microwave Radiative Transfer Model For Calculating Sat, Simonetta Thompson

Electronic Theses and Dissertations

Remote sensing is the process of gathering and analyzing information about the earth's ocean, land and atmosphere using electromagnetic "wireless" techniques. Mathematical models, known as Radiative Transfer Models (RTM), are developed to calculate the observed radiance (brightness temperature) seen by the remote sensor. The RTM calculated brightness temperature is a function of fourteen environmental parameters, including atmospheric profiles of temperature, pressure and moisture, sea surface temperature, and cloud liquid water. Input parameters to the RTM model include data from NOAA Centers for Environmental Prediction (NCEP), Reynolds weekly Sea Surface Temperature and National Ocean Data Center (NODC) WOA98 Ocean Salinity and …

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Thermal Management, Beam Control,And Packaging Designs For High Power, Te-Yuan Chung Jan 2004

Thermal Management, Beam Control,And Packaging Designs For High Power, Te-Yuan Chung

Electronic Theses and Dissertations

Several novel techniques for controlling, managing and utilizing high power diode lasers are described. Low pressure water spray cooling for a high heat flux system is developed and proven to be an ideal cooling method for high power diode laser arrays. In order to enable better thermal and optical performance of diode laser arrays, a new and simple optical element, the beam control prism, is invented. It provides the ability to accomplish beam shaping and beam tilting at the same time. Several low thermal resistance diode packaging designs using beam control prisms are proposed, studied and produced. Two pump cavity …

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Assessment Methods For Student Learning Outcomes In General Education At Urban And Metropolitan Universities, Angela R. Albert Jan 2004

Assessment Methods For Student Learning Outcomes In General Education At Urban And Metropolitan Universities, Angela R. Albert

Electronic Theses and Dissertations

The foci of this qualitative study were twofold. First, the researcher wanted to know what instruments and methods of data collection are being used to assess core general education intended student-learning outcomes at 62 urban and metropolitan universities (members of the Coalition of Urban and Metropolitan Universities). Second, the researcher was interested in knowing the extent to which these approaches to measurement are producing data that can be used for improvement purposes. A review of the literature revealed that only 15% of institutions that indicated in a previous study that they were initiating change in the curriculum of general education …

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Minimization Of Power Dissipation In Digital Circuits Using Pipelining And A Study Of Clock Gating Technique, Ranganath Panchangam Jan 2004

Minimization Of Power Dissipation In Digital Circuits Using Pipelining And A Study Of Clock Gating Technique, Ranganath Panchangam

Electronic Theses and Dissertations

Power dissipation is one of the major design issues of digital circuits. The power dissipated by a circuit affects its speed and performance. Multiplier is one of the most commonly used circuits in the digital devices. There are various types of multipliers available depending upon the application in which they are used. In the present thesis report, the importance of power dissipation in today's digital technology is discussed and the various types and sources of power dissipation have been elaborated. Different types of multipliers have been designed which vary in their structure and amount of power dissipation. The concept of …

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Nitrification Investigation And Modeling In The Chloraminated Drinking Water Distribution System, Suibing Liu Jan 2004

Nitrification Investigation And Modeling In The Chloraminated Drinking Water Distribution System, Suibing Liu

Electronic Theses and Dissertations

This dissertation consists of five papers concerning nitrification in chloraminated drinking water distribution systems in a one and a half year field study. Seven finished waters were produced from different treatment processes and distributed to eighteen pilot distribution systems (PDSs) that were made pipes taken from actual distribution systems. Unlined cast iron (UCI), galvanized steel (G), lined cast iron (LCI), and PVC pipes were used to build the PDSs. All finished waters were stabilized and chloraminated before entering the PDSs. This dissertation consists of five major parts. (1) System variations of nitrates, nitrites, DO, pH, alkalinity, temperature, chloramine residuals and …

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Study For Development Of A Blast Layer For The Virtual Range Project, Sergio Rosales Jan 2004

Study For Development Of A Blast Layer For The Virtual Range Project, Sergio Rosales

Electronic Theses and Dissertations

In this work we develop a Blast-Propellant-Facility integrated analysis study, which evaluates, by using two different approaches, the blast-related impact of an explosive accident of the Space Shuttle during the first ten seconds after launch at Kennedy Space Center. The blast-related risk associated with an explosion at this stage is high because of the quantity of energy involved in both multiple and complex processes. To do this, one of our approaches employed BlastFX®, a software system that facilitates the estimation of the level of damage to people and buildings, starting from an explosive device and rendering results through a complete …

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Evaluation Of The Impacts Of Its Information Strategies On I-4 Corridor, Yueliang Zuo Jan 2004

Evaluation Of The Impacts Of Its Information Strategies On I-4 Corridor, Yueliang Zuo

Electronic Theses and Dissertations

This study evaluated the impacts of ITS information strategies under incident conditions in Interstate 4 (I-4) corridor of Orlando. The analysis was performed using DYNASMART-P software package. The ITS information strategies range from pre-trip information, en-route information, and variable message signs. Simulation covered one hour during the morning peak period. The impacts of ITS information strategies on mobility were evaluated by simulating the performance of various ITS information components (pre-trip information, en-route information, and variable message signs) under incident conditions for the I-4 corridor and comparing the results with the corresponding scenarios in the absence of these components. The traffic …

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Autonomous Environmental Mapping In Multi-Agent Uav Systems, Linus Jan Luotsinen Jan 2004

Autonomous Environmental Mapping In Multi-Agent Uav Systems, Linus Jan Luotsinen

Electronic Theses and Dissertations

UAV units are by many researchers and aviation specialists considered the future and cutting edge of modern flight technology. This thesis discusses methods for efficient autonomous environmental mapping in a multi-agent domain. An algorithm that emphasizes on team work by sharing the agents local map information and exploration intentions is presented as a solution to the mapping problem. General theories on how to model and implement rational autonomous behaviour for UAV agents are presented. Three different human and tactical behaviour modeling techniques are evaluated. The author found the CxBR paradigm to be the most interesting approach. Also, in order to …

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Processing, Microstructural And Mechanical Characterization Of Mechanically Alloyed Al-Al2o3 Nanocomposites, Pushkar Katiyar Jan 2004

Processing, Microstructural And Mechanical Characterization Of Mechanically Alloyed Al-Al2o3 Nanocomposites, Pushkar Katiyar

Electronic Theses and Dissertations

Aluminum-alumina nanocomposites were synthesized using mechanical alloying of blended component powders of pure constituents. This study was performed on various powder mixtures with aluminum as the matrix and alumina as the reinforcement with volume fractions of 20, 30, and 50 % and Al2O3 particle sizes of 50 nm, 150 nm, and 5 µm. X-ray diffraction (XRD) and scanning electron microscopy (SEM) techniques were used for the crystal structure and microstructural characterization of the powders at different stages of milling. Al2O3 powders with 50 nm and 150 nm particle size were predominantly of γ-type, while Al2O3 of 5 µm size was …

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Cryptarray A Scalable And Reconfigurable Architecture For Cryptographic Applications, Michael John Lomonaco Jan 2004

Cryptarray A Scalable And Reconfigurable Architecture For Cryptographic Applications, Michael John Lomonaco

Electronic Theses and Dissertations

Cryptography is increasingly viewed as a critical technology to fulfill the requirements of security and authentication for information exchange between Internet applications. However, software implementations of cryptographic applications are unable to support the quality of service from a bandwidth perspective required by most Internet applications. As a result, various hardware implementations, from Application-Specific Integrated Circuits (ASICs), Field-Programmable Gate Arrays (FPGAs), to programmable processors, were proposed to improve this inadequate quality of service. Although these implementations provide performances that are considered better than those produced by software implementations, they still fall short of addressing the bandwidth requirements of most cryptographic applications …

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Analysis Of Type And Severity Of Traffic Crashes At Signalized Intersections Using Tree-Based Regression And Ordered Probit Models, Joanne Marie Keller Jan 2004

Analysis Of Type And Severity Of Traffic Crashes At Signalized Intersections Using Tree-Based Regression And Ordered Probit Models, Joanne Marie Keller

Electronic Theses and Dissertations

Many studies have shown that intersections are among the most dangerous locations of a roadway network. Therefore, there is a need to understand the factors that contribute to traffic crashes at such locations. One approach is to model crash occurrences based on configuration, geometric characteristics and traffic. Instead of combining all variables and crash types to create a single statistical model, this analysis created several models that address the different factors that affect crashes, by type of collision as well as injury level, at signalized intersections. The first objective was to determine if there is a difference between important variables …

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Expression Morphing Between Different Orientations, Tao Fu Jan 2004

Expression Morphing Between Different Orientations, Tao Fu

Electronic Theses and Dissertations

How to generate new views based on given reference images has been an important and interesting topic in the area of image-based rendering. Two important algorithms that can be used are field morphing and view morphing. Field morphing, which is an algorithm of image morphing, generates new views based on two reference images which were taken at the same viewpoint. The most successful result of field morphing is morphing from one person's face to the other one's face. View morphing, which is an algorithm of view synthesis, generates in between views based on two reference views which were taken at …

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Investigation Of Ground Penetrating Radar For Detection Of Leaking Pipelines Under Roadway Pavements And Development Of Fiber-Wrapping Repair Technique, Pedro F. Suarez Jan 2004

Investigation Of Ground Penetrating Radar For Detection Of Leaking Pipelines Under Roadway Pavements And Development Of Fiber-Wrapping Repair Technique, Pedro F. Suarez

Electronic Theses and Dissertations

Nowadays, it has become a common practice to observe urban roadways undergo severe distress characterized by substantial depressions. In some cases, these pavement depressions are caused by leakages in the connecting joints of sewage pipelines laid beneath the roadway pavement. Manual inspection of pipe leakages has become costly and complex since sewage pipes with relative small diameters do not allow inspection from inside and digging may be required. On the other hand, pipes with large diameters, in which inspection can be made from pipe interior, inspector can not remain inside of the pipe for long periods of time because of …

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Part I: Evaluation Of Russian Synthetic Compounds As A Potential Source Of New Drug Leads Agains Breast And Colon Cancer Part Ii: Isolation Of Beta-Amyrin Formate From Eucalyptus Viminalis Labill And Investigation Of Its Colon Cancer Activity, Mihaela Cohanoschi Jan 2004

Part I: Evaluation Of Russian Synthetic Compounds As A Potential Source Of New Drug Leads Agains Breast And Colon Cancer Part Ii: Isolation Of Beta-Amyrin Formate From Eucalyptus Viminalis Labill And Investigation Of Its Colon Cancer Activity, Mihaela Cohanoschi

Electronic Theses and Dissertations

Although modern medicine made great steps toward curing most diseases considered deadliest, yet cancer remains one of the major public health problems. The first part of this thesis investigates a new source of selective compounds that are potential candidates against cancer. Fifteen Russian compounds were tested in order to establish their efficiency against two types of cancer: human breast SK-Br-3 and colorectal carcinoma HT-29. The bioassay results show that seven of the new synthetic Russian compounds can be considered new drug leads, based upon their low toxicity and efficacy in slowing the growth of human breast cancer and colon cancer …

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A Proposed Algorithm Toward Uniform-Distribution Monotone Dnf Learning, Wenzhu Bi Jan 2004

A Proposed Algorithm Toward Uniform-Distribution Monotone Dnf Learning, Wenzhu Bi

Electronic Theses and Dissertations

In 1984 Valiant introduced the distribution-independent model of Probably Approximately Correct (PAC) learning from random examples and brought up the problem of whether polynomial-size DNF functions are PAC learnable in polynomial time. It has been about twenty years that the DNF learning problem has been widely regarded as one of the most important ---and challenging --- open questions in Computational Learning Theory. We consider a related but simpler question: are polynomial-size monotone DNF functions PAC learnable in polynomial time if examples of the function are uniformly generated? Our research develops an algorithm that we hope to learn a monotone DNF …

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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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