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University of Central Florida

Theses/Dissertations

2014

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Load Transfer In An Isolated Particle Embedded Within An Epoxy Matrix, Erik Durnberg Jan 2014

Load Transfer In An Isolated Particle Embedded Within An Epoxy Matrix, Erik Durnberg

Electronic Theses and Dissertations

Particulate composites are widely used in many aerospace applications such as protective coatings, adhesives, or structural members of a body and their mechanical properties and behavior have gained increasing significance. The addition of modifiers such as alumina generally leads to improved mechanical properties. This addition also enables the non-invasive study of the load transfer between the particle and the matrix. Understanding the load transfer between the particulate and the matrix material is the first step to understanding the behavior and mechanical properties of the composite as a whole. In this work, samples with an isolated alumina particle embedded in an …

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The Role Of Invitational Theory On Minority Student Enrollment In Advanced Placement Courses, Jason Mcdonald Jan 2014

The Role Of Invitational Theory On Minority Student Enrollment In Advanced Placement Courses, Jason Mcdonald

Electronic Theses and Dissertations

The number of students enrolling in Advanced Placement (AP) classes has been increasing in Florida and across the nation over the last decade. However, this trend is not happening for traditionally underserved groups of students such as African Americans, Hispanics, and students from low socioeconomic backgrounds. These minority groups are underrepresented in AP classes, while Asian and White students are overrepresented. This trend is alarming because there are qualified minority students who have a great chance of being successful in AP classes according to AP Potential data. For some reason though, these qualified minority and low income students are nevertheless …

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Migratory Connectivity And Carry-Over Effects In Northwest Atlantic Loggerhead Turtles (Caretta Caretta, L.), Simona Ceriani Jan 2014

Migratory Connectivity And Carry-Over Effects In Northwest Atlantic Loggerhead Turtles (Caretta Caretta, L.), Simona Ceriani

Electronic Theses and Dissertations

Migration is a widespread and complex phenomenon in nature that has fascinated humans for centuries. Connectivity among populations influences their demographics, genetic structure and response to environmental change. Here, I used the loggerhead turtle (Caretta caretta, L.) as a study organism to address questions related to migratory connectivity and carry-over effects using satellite telemetry, stable isotope analysis and GIS interpolation methods. Telemetry identified foraging areas previously overlooked for loggerheads nesting in Florida. Next, I validated and evaluated the efficacy of intrinsic markers as a complementary and low cost tool to assign loggerhead foraging regions in the Northwest Atlantic Ocean (NWA), …

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Pen-Based Methods For Recognition And Animation Of Handwritten Physics Solutions, Salman Cheema Jan 2014

Pen-Based Methods For Recognition And Animation Of Handwritten Physics Solutions, Salman Cheema

Electronic Theses and Dissertations

There has been considerable interest in constructing pen-based intelligent tutoring systems due to the natural interaction metaphor and low cognitive load afforded by pen-based interaction. We believe that pen-based intelligent tutoring systems can be further enhanced by integrating animation techniques. In this work, we explore methods for recognizing and animating sketched physics diagrams. Our methodologies enable an Intelligent Tutoring System (ITS) to understand the scenario and requirements posed by a given problem statement and to couple this knowledge with a computational model of the student's handwritten solution. These pieces of information are used to construct meaningful animations and feedback mechanisms …

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The Effect Of Habitat For Humanity Homeownership On Student Attendance And Standardized Test Scores In Orange County Florida School District, Charles Harris Jan 2014

The Effect Of Habitat For Humanity Homeownership On Student Attendance And Standardized Test Scores In Orange County Florida School District, Charles Harris

Electronic Theses and Dissertations

The mobility of low-income students who do not have access to stable housing creates numerous challenges both at home and in school. Among these challenges, academic performance certainly is one of the most important. The lack of a more permanent, familiar, and safe environment is presumed to impact home life as well as students' performance in the classroom. This research compares two groups of current and former students of Orange County Public Schools (OCPS) in Florida (1) children of families who are Habitat for Humanity (HFH) homeowners, and (2) a matched socioeconomic control group. The HFH program is designed to …

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Transparent Oxide Semiconductor Gate Based Mosfets For Sensor Applications, Ashwin Kumar Saikumar Jan 2014

Transparent Oxide Semiconductor Gate Based Mosfets For Sensor Applications, Ashwin Kumar Saikumar

Electronic Theses and Dissertations

Starting from small scale laboratories to the highly sophisticated industrial facilities, monitoring and control forms the most integral part. In order to perform this continuous monitoring we require an interface, that would operate between the system and its processing conditions and in turn which facilitates us to act accordingly. This interface is called as a sensor. There are various types of sensors available which have wide range of functionality in various different fields. The use of transparent conducting oxide (TCO) in the field of sensor applications has increased and has been the subject of extensive research. Good electrical properties, good …

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The Art Of The Technical Director, Victoria Oakes Jan 2014

The Art Of The Technical Director, Victoria Oakes

Electronic Theses and Dissertations

The theatrical scenic design process does not end at a picture on paper or with the presentation of a scale model. The design must be translated to the stage. There are a myriad of questions to be answered and decisions regarding construction style, process, material choices, structure, safety, etc. that must be made in order to fully realize the design. In a common, contemporary American production hierarchy, the person that is most often responsible for this translation process is the technical director. Often, the technical director is stereotyped as solely a craftsman or a technician following a set of pre-established …

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Zinc Sulfide: Manganese Doped Quantum Rods For Detection Of Metal Ions And A Business Model For Future Sales, Andrew Teblum Jan 2014

Zinc Sulfide: Manganese Doped Quantum Rods For Detection Of Metal Ions And A Business Model For Future Sales, Andrew Teblum

Electronic Theses and Dissertations

Hexavalent chromium is an extremely carcinogenic chemical that has been widely produced in the United States. This has led to major waste contamination and pollution throughout the country. According to the Environmental Working Group Hexavalent chromium has been found in 89% of city tap water. Most people believe they are safe using regular home filter systems however that is not true. A more expensive ion exchange water treatment unit is required. Therefore to protect yourselves from this carcinogenic metal a reliable test is required. In this study we have developed a Zinc Sulfide Manganese doped Quantum Rod technology to detect …

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Let Me Tell You About Homestuck: The Online Production Of Place, Jennifer Short Jan 2014

Let Me Tell You About Homestuck: The Online Production Of Place, Jennifer Short

Electronic Theses and Dissertations

This thesis investigates the potential for the online production of place, specifically as it applies to the host site for the Homestuck web comic, MS Paint Adventures, and its attendant fandom. The proliferation of digital environments such as video games, web sites, and chat rooms has led to numerous opportunities for the study of online spaces and the numerous practices that take place within them. The lack of physical location in online spaces can, however, make it difficult to conceptualize of a web site as real, a problem that has often led researchers to develop new theories of space that …

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Purification And Characterization Of A Novel Selenocysteine Lyase From Enterococcus Faecalis, Samantha Nelson Jan 2014

Purification And Characterization Of A Novel Selenocysteine Lyase From Enterococcus Faecalis, Samantha Nelson

Electronic Theses and Dissertations

A previous study identified Enterococcus faecalis as one of two bacteria known to have the selD gene and other selenium related genes without having the genes necessary to make selenocysteine or selenouridine. EF2570, a gene in the cluster, was later shown to be upregulated during biofilm formation and also responsible for a selenite- and molybdate-dependent increase in biofilm formation in vitro. The protein encoded was identified as a selenium dependent molybdenum hydroxylase (SDMH), enzymes that contain a labile selenium atom required for activity. While the process of inserting selenocysteine into a protein is well known, the process by which a …

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Physiological Constraints On Warm-Water Habitat Site Selection And Utilization By The Florida Manatee (Trichechus Manatus Latirostris) In East Central Florida, Ann Spellman Jan 2014

Physiological Constraints On Warm-Water Habitat Site Selection And Utilization By The Florida Manatee (Trichechus Manatus Latirostris) In East Central Florida, Ann Spellman

Electronic Theses and Dissertations

Living at the northern limits of its geographic range, the Florida manatee is particularly susceptible to cold stress-related mortality during the winter months, with most deaths occurring in the lower two-thirds of the state. Contributing to this cold stress susceptibility is the manatee's limited physiological and behavioral responses available when thermally stressed. While capable of migrating south in response to falling water temperatures, manatees must still find warm water when ambient river temperature drops below 20°C for more than a few days. This is in part due to the species low metabolic rate, limited capacity for thermogenesis, and limited ability …

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To Better Understand The Theater Of The Middle Ages By An In-Depth Study Of The Old Testament Plays Of The York Cycle Of Corpus Christi Plays, Carole Casey Jan 2014

To Better Understand The Theater Of The Middle Ages By An In-Depth Study Of The Old Testament Plays Of The York Cycle Of Corpus Christi Plays, Carole Casey

Electronic Theses and Dissertations

Scholastic texts on theater move from the Greeks and Romans to the theater of Shakespeare's time with little or no acknowledgment of the Middle Ages. From the late thirteenth century until the reformation an active community theater known as the mystery plays existed throughout much of Europe. The York Corpus Christi Cycle was part of that movement. The play was produced by the guilds of York under the supervision of the chamber of commerce with the Church monitoring the theology and morals. Performed yearly on the Feast Day of Corpus Christi, the subject of the play was the salvation of …

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The Anti-Toxin Properties Of Grape Seed Phenolic Compounds, Patrick Cherubin Jan 2014

The Anti-Toxin Properties Of Grape Seed Phenolic Compounds, Patrick Cherubin

Electronic Theses and Dissertations

Corynebacterium diphtheriae, Pseudomonas aeruginosa, Ricinus communis, Shigella dysentariae, and Vibrio cholerae produce AB toxins which share the same basic structural characteristics: a catalytic A subunit attached to a cell-binding B subunit. All AB toxins have cytosolic targets despite an initial extracellular location. AB toxins use different methods to reach the cytosol and have different effects on the target cell. Broad-spectrum inhibitors against these toxins are therefore hard to develop because they use different surface receptors, entry mechanisms, enzyme activities, and cytosolic targets. We have found that grape seed extract provides resistance to five different AB toxins: diphtheria toxin (DT), P. …

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Model-Based Systems Engineering Approach To Distributed And Hybrid Simulation Systems, John Pastrana Jan 2014

Model-Based Systems Engineering Approach To Distributed And Hybrid Simulation Systems, John Pastrana

Electronic Theses and Dissertations

INCOSE defines Model-Based Systems Engineering (MBSE) as "the formalized application of modeling to support system requirements, design, analysis, verification, and validation activities beginning in the conceptual design phase and continuing throughout development and later life cycle phases." One very important development is the utilization of MBSE to develop distributed and hybrid (discrete-continuous) simulation modeling systems. MBSE can help to describe the systems to be modeled and help make the right decisions and partitions to tame complexity. The ability to embrace conceptual modeling and interoperability techniques during systems specification and design presents a great advantage in distributed and hybrid simulation systems …

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Multimaterial Fibers In Photonics And Nanotechnology, Guangming Tao Jan 2014

Multimaterial Fibers In Photonics And Nanotechnology, Guangming Tao

Electronic Theses and Dissertations

Recent progress in combing multiple materials with distinct optical, electronic, and thermomechanical properties monolithically in a kilometer-long fiber drawn from a preform offers unique multifunctionality at a low cost. A wide range of unique in-fiber devices have been developed in fiber form-factor using this strategy. Here, I summary my recent results in this nascent field of 'multimaterial fibers'. I will focus on my achievements in producing robust infrared optical fibers and in appropriating optical fiber production technology for applications in nanofabrication. The development of optical components suitable for the infrared (IR) is crucial for applications in this spectral range to …

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We Are The Asteroid, Sloane Davis Jan 2014

We Are The Asteroid, Sloane Davis

Electronic Theses and Dissertations

We Are the Asteroid is a collection of personal essays concerned with the power of erasure and manipulation of chronology that comes with writing. It both acknowledges and participates in the fact that nonfiction writers become unstuck in time, whether they want to or not, traveling between ages, rearranging the order of events into the stories they tell. The collection centers on a few traumatic events in the narrator's life, and it explores the ways in which she deals with those events through her writing. The writer utilizes various structural techniques, such as the segmented form, to play with the …

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