Digital Commons Network^™

Ballcourt Iconography At Caracol, Belize, Patsy Holden

Electronic Theses and Dissertations

One of the more commonly known aspects of the ancient Maya culture is the ballgame. This ancient ballgame was played by most Mesoamerican cultures on a constructed ballcourt and many major Mesoamerican sites have at least one, if not more than one. Contemporary Mesoamericans still play versions of this ballgame today, but without the use of the ballcourts, questioning the importance and purpose of the ballcourt that is no longer the case today. After over a century of research, scholars have yet to unravel all the cosmological and mythological mysteries of the ballcourt and its purpose to the ancient Maya. …

A Model Of Treating Hyperfunctional Voice Disorders For School Age Children Within A Serious Gaming Environment, Suzanne King

Electronic Theses and Dissertations

The purpose of the present study is to test the feasibility of implementing a video-game based intervention protocol as a means to improve therapy compliance in school age children with hyperfunctional voice disorders. Three levels of modification were made to an existing entertainment software program in order to implement the therapeutic protocol and test compatibility. The third level of modification included a two-phase quasi-experimental single subject design with a school age participant receiving the video game therapy protocol and traditional therapy for equal time. The independent variables for this study included the mode of voice therapy delivery (traditional vs. video …

The Whole Headlight-Colored Night, Matthew Bryan

Electronic Theses and Dissertations

This collection of short fiction probes the lives of characters trying to make their home in the flat, unchanging landscape of the small towns that make up central Florida. The largely static environment reflects the rigid patterns of behavior and domesticity the characters find themselves so easily falling into. Seemingly ordinary items-a shotgun, a t-shirt, a paper bag-and the small moments that make up everyday life are imbued with significance as men and women painfully aware of their own ordinariness struggle to hold onto those fragile instances of connection, happiness, or even their own self-constructed sense of identity. The struggle …

Selling Sunshine: How Cypress Gardens Defined Florida, 1935-2004, David Dinocola

Electronic Theses and Dissertations

This thesis examines the relationship between Cypress Gardens and the state of Florida. Specifically, it focuses on how the creator of the park, Dick Pope, created his park after his own idealized vision of the state, and how he then promoted both his park and Florida as one and the same. The growth and later decline of Cypress Gardens follows trends in Florida's growth patterns and shifts in tourism. This study primarily uses a combination of newspaper sources and promotional pictures and other media from the park to explain how Pope attempted to make Cypress Gardens synonymous with Florida. In …

Taking The Initiative: Exploring The Influence Of Citizen Legislating On Good Goverance In The American States, Kerri Milita

Electronic Theses and Dissertations

The citizen legislator is both a controversial and recurring phenomenon of interest in political science research. A longstanding concern for the discipline has been whether or not involvement of the public in the lawmaking process is an asset or a liability to quality governance. This study explores the desirability of citizen legislating in the American states. A four dimensional index is created that includes empirical indicators of "substantive" and "procedural" governance. These indicators include voter turnout, fiscal health, the ideological distance between government and the citizenry, and the diversity of a state's interest group system. The total number of initiatives …

The Role Of The Internet As A Tool To Aid In U.S. Adult Consumers' Weight Loss, Jaclyn Kirby

Electronic Theses and Dissertations

This thesis focuses on ways the Internet can positively influence and educate U.S. Americans to become healthier and eventually lose weight. Throughout the past 30 years, the percentage of overweight and obese adults in the U.S. has increased immensely, resulting in a nationwide epidemic (American Association for Public Opinion Research, 2006; Center for Disease Control, 2006; Goodman, 2005; The Obesity Society, 2008). The research question for this thesis is the following: What are the perceptions of U.S. adult consumers regarding the positive influence the Internet has on weight loss? In order to determine the influence of the Internet on U.S. …

Landcover Change And Population Dynamics Of Florida Scrub-Jays And Florida Grasshopper Sparrows, David Breininger

Electronic Theses and Dissertations

I confronted empirical habitat data (1994-2004) and population data (1988-2005) with ecological theory on habitat dynamics, recruitment, survival, and dispersal to develop predictive relationships between landcover variation and population dynamics. I focus on Florida Scrub-Jays, although one chapter presents a model for the potential influence of habitat restoration on viability of the Florida Grasshopper Sparrow. Both species are unique to Florida landscapes that are dominated by shrubs and grasses and maintained by frequent fires. Both species are declining, even in protected areas, despite their protected status. I mapped habitat for both species using grid polygon cells to quantify population potential …

Zinc-Finger Protein Mcpip In Cell Death And Differentiation, Craig Younce

Electronic Theses and Dissertations

Monocyte chemotactic protein-1 (MCP-1) plays a critical role in the development of cardiovascular diseases. How MCP-1 contributes to the development of heart disease is not understood. We present evidence that MCP-1 causes death in cardiac myoblasts, H9c2 by inducing oxidative stress, ER stress and autophagy via a novel Znfinger protein, MCP-1 induced protein (MCPIP). MCPIP expression caused cell death and knockdown of MCPIP, attenuated MCP-1 induced cell death. Expression of MCPIP resulted in induction of iNOS and production of reactive oxygen (ROS). It caused induction of NADPH oxidase subunit phox47 and its translocation to the cytoplasmic membrane. Oxidative stress led …

Synthesis Of Biocompatible Antioixidant Polymer Coated Cerium Oxide Nanoparticles, Its Oxidase Like Behavior And Cellular Uptake, Atul Asati

Electronic Theses and Dissertations

Cerium oxide nanoparticles have been widely used for various applications such as catalytic converters for automobile exhaust, ultraviolet absorber, and electrolyte in fuel cells. Most recently, cerium oxide nanoparticles (nanoceria) have been employed as potent free-radical scavengers with neuroprotective, radioprotective, and anti-inflammatory properties. These properties of cerium oxide nanoparticles can open new vistas in medicine and biotechnology. The present study utilizes the water-based-wet-chemical method to synthesize biocompatible,stable and highly monodisperse polymer coated cerium oxide nanoparticles. Polymer coated cerium oxide nanoparticles possess all the characteristics of the uncoated cerium oxide nanoparticles. These nanoparticles were found to be effective as pH-dependent antioxidant …

Tissue Engineered Myelination And The Stretch Reflex Arc Sensory Circuit: Defined Medium Formulation, Interface Design And Microfabrication, John Rumsey

Electronic Theses and Dissertations

The overall focus of this research project was to develop an in vitro tissue-engineered system that accurately reproduced the physiology of the sensory elements of the stretch reflex arc as well as engineer the myelination of neurons in the systems. In order to achieve this goal we hypothesized that myelinating culture systems, intrafusal muscle fibers and the sensory circuit of the stretch reflex arc could be bioengineered using serum-free medium formulations, growth substrate interface design and microfabrication technology. The monosynaptic stretch reflex arc is formed by a direct synapse between motoneurons and sensory neurons and is one of the fundamental …

Determinants Of Chloroplast Gene Expression And Applications Of Chloroplast Transformation In Lactuca Sativa And Nicotiana Tabacum, Tracey Ruhlman

Electronic Theses and Dissertations

Genetic modification of plastids in the model plant tobacco (Nicotiana tabacum) has demonstrated that numerous foreign gene products can accumulate to high levels in this setting. Plastid biotechnology is maturing to encompass the improvement of food and feed species and the production of biopharmaceutical proteins for oral delivery necessitating development of stable transplastomic edible plants. In the interest of establishing an edible platform we have investigated the use of native and foreign regulatory elements in relation to foreign gene expression in plastids. Multiple sequence alignments of intergenic regions for 20 species of angiosperm showed that despite 95% identity in the …

Tourists' Attitudes Toward The Use Of Animals In Tourist Attractions: An Empirical Investigation, Amir Shani

Electronic Theses and Dissertations

From time immemorial human beings have utilized animals for various needs and purposes, which led societies to debate the justification for using animals and to reflect on the way in which animals are treated. These concerns have also resulted in various contemporary studies aimed to reveal interest groups'--as well as the general publics'--views and opinions on the issues under dispute. Nevertheless, despite the considerable incorporation of animals in entertainment and leisure venues, only limited efforts have been geared towards exploring the ethical aspects of using animals in these initiatives. This lack of attention is especially evident in the tourism literature, …

Content And Citation Analysis Of Interdesciplinary Humanities Textbooks Within A Framework Of Curriculum Theory, Julie Guidera

Electronic Theses and Dissertations

The purpose of this dissertation was to analyze the content of textbooks used in undergraduate survey courses in interdisciplinary humanities to understand the content of the curriculum and how an author's viewpoint shapes the product. By enumerating the texts and images authors and their publishers used to illustrate 20th century culture and the transition into the 21st century, the analysis generated a description of the range of perspectives from traditional to postmodern found in six sampled textbooks. Textbook content provided chronological data, while authors' source citations established identity properties of the works' contributors. Through a ranking system of authors' treatment …

The Anatomy Of A Production: The Analysis Of The Directorial Journey Mounting "Steel Magnolias" For The Stage, Aradhana Tiwar

Electronic Theses and Dissertations

This study is based on the Vine Theater Company's production of "Steel Magnolias" performed in March of 2007 at the Garden Theater in Winter Park Florida, directed by Aradhana Tiwari. This document examines the directorial journey from vision to the stage. Specifically it will explore a.) The dynamics of the production process from a directorial lens. b.) Interpreting Harling's text for design and performance c.) The development of an artistic aesthetic through collaboration. In May of 2007, I mounted a production of "Steel Magnolias" for the Orlando International Fringe Festival. The show was performed in the Universal, a thrust space …

Like A Woman: Playing The Homosexual As Truth In Kiss Of The Spider Womana, Michael Beaman

Electronic Theses and Dissertations

Identity, who we are, is at the core of every human being, thus at the core of every character from every play. How the character identifies his self through gender and sexual identity will shape both physical and emotional choices that an actor will make through the rehearsal process. As an actor, it is absolutely imperative to resist the urge to pass judgment on the characters we portray. As more characters in modern drama are openly gay, there is an increasing urge for an actor to fall into campy stereotypes. Through a performance of the role of Molina in Manuel …

Machinal: A Sourcebook For The Actress Playing "Young Women", Brittney Rentschler

Electronic Theses and Dissertations

This thesis will document four phases of my rehearsal process/performance while portraying the role of Helen in Sophie Treadwell's Machinal. The first phase of the project will be researching and analyzing historical material on: Sophie Treadwell (the playwright) Ruth Snyder (the murderess upon whom the character of Helen is based), and the actual murder that occurred in the 1920's. The second phase that will be documented is a character analysis. I will take each episode and divide it into the following sections: given circumstances, what is said about the character by the playwright, by others, or by herself, objectives, tactics, …

X: The Rise And Fall Of An Asylum Star (A Journey Of Two Actresses), Erika Wilhite

Electronic Theses and Dissertations

The performance of X: The Rise and Fall of an Asylum Star, in conjunction with my thesis document, investigates the dichotomy of fantasy and reality for a performer. I compare the creative and emotional journey of Augustine, a young woman hospitalized for hysteria, to my own journey as an actress. Augustine was also performer, for her doctors led her in public demonstrations of the symptoms of hysteria. Her "talent" for hysteria earned her notoriety and celebrity. She was coached and directed from her doctors to enhance her demonstrations. As a result, the validity and authenticity of her state was questionable. …

Guidelines For Twenty-First Century Instructional Design And Technology Use: Technologies' Influence On The Brain, Jennifer Gabriel

Electronic Theses and Dissertations

The increasingly global environment has spurred the economy in the United States as well as the economies in nearly every other nation. Although the U.S. remains the world leader in the global economy, research shows that the United States is at risk of losing its place as the world leader in science and innovation. Policymakers have recognized the need for research addressing global competitiveness. President Bush signed the America Competes Act, which calls for increased investment in innovation and education to improve U.S. competitiveness and President Barack Obama has named a platform, "Science, Technology and Innovation for a New Generation" …

Role Of Thyroid Hormone In The Intestinal Development Of Eleutherodactylus Coqui, Srikanth Singamsetty

Electronic Theses and Dissertations

Thyroid hormone (TH) is required for the metamorphosis of the long, coiled tadpole gut in Xenopus laevis into a shorter mature adult gut. Eleutherodactylus coqui, a direct developing frog, lacks a tadpole. Its embryonic gut is a miniature adult form with a mass of yolky endodermal cells attached to the small intestine to provide nutrition. The requirement of TH for the gut development in E. coqui was tested in this study. Inhibition of TH synthesis with methimazole arrested gut development in its embryonic form. T3, the active form of TH, induced gut development. Embryos treated with methimazole failed to utilize …

The Role And Function Of Literacy In Two Homeschooling Families, Kevin Rua

Electronic Theses and Dissertations

Homeschooling is an increasingly popular practice, and this raises questions about how it is carried out. One important area for investigation is the literacy practices of homeschooling. Literacy is often seen as a necessary component of formal schooling. This project investigated the role and function of literacy in two homeschooling families. Specifically the research was designed to answer the following questions:

*How is homeschooling both similar to and different from formal schooling?

*What are the literacy practices of homeschooling? What tools are used in these practices? What knowledge and skills are used in these practices? What are the goals of …

Relationship Between Nurse Educators' Cultural Competence And Ethnic Minority Nursing Students' Recruitment And Graduation., Pearl Ngozika Ume-Nwagbo

Electronic Theses and Dissertations

The purpose of this exploratory study was to measure the cultural competence of nurse educators in accredited baccalaureate (BSN) nursing programs in Tennessee (TN) and investigate the relationship, if any, between nurse educators' cultural competence and the percentage of minority nursing students recruited into and graduated from these schools in the previous 5 years.

With the rapid rise of the minority population in the United States, more minority healthcare providers, including nurses, are needed to provide culturally congruent care in underserved communities. Literature has implied that nurse educators' lack of cultural competence and sensitivity regarding minority nursing students' educational needs …

Urinary Excretion Of (1-3)-Beta-D-Glucans., Debra K. Head

Electronic Theses and Dissertations

(1→3)-β-D-Glucans are carbohydrate polymers that are present in the cell wall of various fungi and bacteria; they are pathogen associated molecular patterns that circulate during infection and modulate immunity. Our laboratory has previously established the pharmacokinetics of intravenously and orally administered glucans; the present studies investigated the renal excretion of (1→3)-β-D-glucans following intravenous and oral administration. Three fluorescently-labeled glucans were administered to adult male rats in the presence or absence of toxic challenge. Urine specimens were collected and analyzed by fluorescence spectroscopy, size-exclusion chromatography and GPC/MALLS. 71 ± 3% of fluorescence remained in the >5K MWCO fraction; this fraction showed …

Herpes Simplex Virus Glycoprotein D/Host Cell Surface Interaction Stimulates Chlamydia Trachomatis Persistence Via A Novel Pathway., Jennifer Vanover

Electronic Theses and Dissertations

When presented with certain unfavorable environmental conditions, C. trachomatis reticulate bodies (RBs) enter into a viable, yet noncultivable state called persistence. Two hallmarks of persistent chlamydiae are swollen, aberrantly shaped RBs, as viewed by transmission electron microscopy and a decrease in infectious progeny. Several models of chlamydial persistence have been described, including interferon-γ (IFN-γ), IFN-α, IFN-β, and tumor necrosis factor-α-exposure and nutrient deprivation. Previously, we established an in vitro co-infection model of two of the most common sexually transmitted pathogens in the United States, C. trachomatis and Herpes Simplex Virus-2 (HSV). Data from this tissue culture model indicate that: i) …

Characterization Of Murine Cardiac Cholinergic Innervation And Its Remodeling In Type 1 Diabetes., Abigail Marie Mabe

Electronic Theses and Dissertations

Murine models have become increasingly popular to study various aspects of cardiovascular diseases due to their ease of genetic manipulation. Unfortunately, there has been little effort put into describing the distribution of autonomic nerves in the mouse heart, making it difficult to compare current findings from clinical and experimental models related to cardiovascular diseases. Furthermore, determination of the requirements for the development of this system and its maintenance in adult mice remains largely unexplored. This study represents the first detailed mapping of cholinergic neuroanatomy of the mouse heart based on immunohistochemical staining using true cholinergic markers. We found cholinergic innervation …

Police Stress: An Examination Of The Effects Of Stress And Coping Strategies., Derrick Kenwright

Electronic Theses and Dissertations

How police officers deal with stress greatly affects how they carry out their daily lives and how they treat family and friends. In this study 2 police departments were issued surveys to see how the police officers experienced stress. Questions on the survey asked the officers about the sources of stress, sources of support, and which methods they used to alleviate the stress. The surveys were given to the respective departments over a period of 2 months, and 132 surveys were returned. The statistical analysis performed showed danger was a factor when examining stress. Administration support was found to be …

Cytotoxic Effects Of Ruthenium Compounds On Human Cancer Cell Lines., Katie Beth Brown

Electronic Theses and Dissertations

Chemotherapy is the most common cancer treatment. Traditionally, platinum-based drugs are used in chemotherapy. More recently, researchers have focused on ruthenium based compounds as a substitute for the platinum compounds. Ruthenium-based compounds appear to be less toxic to healthy cells than traditional platinum-based compounds. In this study, 7 ruthenium-based compounds were tested on HT-29 (colon) and MCF-7 (breast) human cancer cell lines with the specific aim of determining whether or not any of the ruthenium-based compounds exhibited cytotoxic properties. In addition, levels of vascular endothelial growth factor (VEGF) production were tested in supernate from the cancer cells treated with various …

Elucidating The Role Of The Α7 Nicotinic Receptor In The Etiology Of Schizophrenia., Michelle Johnson Chandley

Electronic Theses and Dissertations

The α7 subunit of the nicotinic receptor, a ligand gated ion channel with an affinity for nicotine, has long been implicated in the pathophysiology of schizophrenia due to the extremely high rate of smoking within the patient population. However, the exact role of the receptor has never fully been determined. In the following studies, various functions the receptor may assume in disease state are evaluated. There is a strong relationship between the immune system and schizophrenia, with the α7 subunit possibly serving as the link between the two. One of the following studies looks at the possibility of the receptor …

Characterization Of The Genes Involved In Biosynthesis And Transport Of Schizokinen, A Siderophore Produced By Rhizobium Leguminosarum Iari 917., David Jack Hammond

Electronic Theses and Dissertations

Iron is the 4th most abundant metal on the earth's crust and is required by most organisms as a cofactor for many enzymes; however, at physiological pH and aerobic conditions iron forms insoluble ferric oxyhydroxide polymers. Siderophores are low molecular weight compounds that scavenge ferric ions, bind with high affinity, and transport it into the cell via multicomponent transport systems. Rhizobia are soil dwelling organisms that form symbiotic relationships with host plants and fix atmospheric nitrogen, while the bacteria receive nutrients. R. leguminosarum IARI 917 produces a siderophore characterized as 'schizokinen'. In the present study, we have characterized the binding …

Iron Acquisition In Rhodococcus Erythropolis Strain Igts8: Characterization Of A Mutant Strain That Over Produces Siderophore., Melanie Anne Pratt

Electronic Theses and Dissertations

Iron is an essential nutrient for most bacteria because enzymes like nitrate reductase and cytochromes use it as a cofactor. However, in most aerobic, neutral pH environments, iron is essentially insoluble and not easily available for bacteria to use. Many bacteria respond to this problem by releasing small organic compounds called siderophores that bind and effectively solubilize iron so that it can be transported into the cell for growth. The focus of this study was to learn more about the iron acquisition and especially the transport of iron by the soil bacterium Rhodococcus erythropolis. To fulfill this aim, mutant …

The Expression And Localization Of Cytoplasmic Polyadenylation Element Binding Proteins In The Retina., Xiangping Wang

Electronic Theses and Dissertations

The current status of our knowledge of synaptic plasticity comes largely from studies of the hippocampus and the context of learning and memory. We remain largely ignorant of plasticity in other neural systems and contexts. The molecular basis of plasticity has recently been given new impetus due to the discovery of a local control mechanism which can regulate protein synthesis at stimulated synapses. This involves the use of cytoplasmic polyadenylation binding proteins (CPEBs) to regulate translation. The studies presented here attempt to show that these molecular components are present in the retina, a part of the central nervous system that …