Open Access. Powered by Scholars. Published by Universities.®

Digital Commons Network™

Open Access. Powered by Scholars. Published by Universities.®

University of Central Florida

Discipline
Keyword
Publication Year
Publication
Publication Type
File Type

Articles 4171 - 4200 of 6994

Full-Text Articles in Entire DC Network

Novel Protein-Protein Interactions Regulate The Proteolytic Activity Of The Pro- Apoptotic Serine Protease, Omi/Htra2, Supriya Singh Jan 2005

Novel Protein-Protein Interactions Regulate The Proteolytic Activity Of The Pro- Apoptotic Serine Protease, Omi/Htra2, Supriya Singh

Electronic Theses and Dissertations

Omi/HtrA2 is a mitochondrial serine protease with high homology to the bacterial HtrA proteins. Omi promotes caspase-dependent apoptosis by binding and degrading IAPs-inhibitor of apoptosis proteins. Omi can also induce caspase-independent apoptosis but the actual mechanism is still unknown. IAP's are not the only substrates cleaved by Omi. There are at least two more known substrates of Omi, the HAX-1 and the ped/pea-15 proteins. HS1-associated protein X-1 (HAX-1) is a mitochondrial protein, degraded by Omi after induction of caspase-dependent apoptosis. Ped/pea-15 is also an anti-apoptotic protein and is cleaved by Omi after induction of caspase-independent apoptosis. The proteolytic activity of …

Go to article

Responses Of The Florida Mouse (Podomys Floridanus) To Habitat Management, Jason Depue Jan 2005

Responses Of The Florida Mouse (Podomys Floridanus) To Habitat Management, Jason Depue

Electronic Theses and Dissertations

The Florida mouse (Podomys floridanus), a species restricted to the Lake Wales Ridge and the Atlantic Coastal Ridge, is recognized by the Florida Fish and Wildlife Conservation Commission as a species of special concern, highlighting its status as a species that is threatened by habitat loss statewide. Publicly owned lands offer protection for the species, but management is generally focused on protecting biodiversity in general and not a particular species. The response of the Florida mouse to land management practices such as mechanical treatment and prescribed fires is poorly documented. This research examined the population responses of Florida mice on …

Go to article

University Of Central Florida 2004-2005 Fact Book, University Of Central Florida Jan 2005

University Of Central Florida 2004-2005 Fact Book, University Of Central Florida

Historical Fact Book and Enrollment

Historical fact book and enrollment data for the University of Central Florida.

Go to article

Real Time Rt-Pcr For Direct Detection Of Viable Mycobacterium Avium Subspecies Paratuberculosis In Chron's Disease Patients And Association Of Map Infection With Downregulation In Interferon-Gamma Receptor (Infg1) Gene In Crohn's Disease Patients, Mounir Chehtane Jan 2005

Real Time Rt-Pcr For Direct Detection Of Viable Mycobacterium Avium Subspecies Paratuberculosis In Chron's Disease Patients And Association Of Map Infection With Downregulation In Interferon-Gamma Receptor (Infg1) Gene In Crohn's Disease Patients, Mounir Chehtane

Electronic Theses and Dissertations

Association of Mycobacterium avium subspecies paratuberculosis (MAP) with Crohn's disease (CD) and not with ulcerative colitis (UC), two forms of inflammatory bowel disease (IBD), has been vigorously debated in recent years. This theory has been strengthened by recent culture of MAP from breast milk, intestinal tissue and Blood from patients with active Crohn's disease. Culture of MAP from clinical samples remained challenging due to the fastidious nature of MAP including its lack of cell wall in infected patients. The advent of real time PCR has proven to be significant in infectious disease diagnostics. In this study, real time reverse transcriptase …

Go to article

Expression Of Hepatitis C Viral Non-Structural 3 Antigen In Transgenic Chloroplasts, Anubhuti Bhati Jan 2005

Expression Of Hepatitis C Viral Non-Structural 3 Antigen In Transgenic Chloroplasts, Anubhuti Bhati

Electronic Theses and Dissertations

Hepatitis C viral infection is the major cause of acute hepatitis and chronic liver disease and remains the leading cause of liver transplants (NIH). An estimated 180 million people are infected globally (WHO). There is no vaccine available to prevent hepatitis C. The treatment with antiviral drugs is expensive, accompanied with various side effects and is limited only to those at risk of developing advanced liver disease. The treatment is also effective in only about 30% to 50% of treated patients and still a high percentage of patients are resistant to therapy. Therefore, there is an urgent need for the …

Go to article

The Effects Of Ecotourism On Polar Bear Behavior, Gillian Eckhardt Jan 2005

The Effects Of Ecotourism On Polar Bear Behavior, Gillian Eckhardt

Electronic Theses and Dissertations

Polar bears spend the majority of their lives on the sea ice, where they gain access to seals and mates. In western Hudson Bay, the sea ice melts for three to four months in the summer, and polar bears there are forced onto land. These bears live on their fat reserves for the duration of the iceless period, until temperatures get colder in the fall and freeze up begins. The aggregation of polar bears near Churchill, Manitoba during the ice free period has led to a thriving tourist industry, with a large influx of tourists visiting Churchill in the fall …

Go to article

Expression Of Cholera Toxin B Subunit-Rotavirus Nsp4 Enterotoxin Fusion Protein In Transgenic Chloroplasts, Anila Kalluri Jan 2005

Expression Of Cholera Toxin B Subunit-Rotavirus Nsp4 Enterotoxin Fusion Protein In Transgenic Chloroplasts, Anila Kalluri

Electronic Theses and Dissertations

Rotavirus, the major cause of life-threatening infantile gastroenteritis, is a member of the Reoviridae family and is considered to be the single most important cause of virus-based severe diarrheal illness in infants and young children particularly 6 months to 2 years of age in industrialized and developing countries. Infection in infants and young children is often accompanied by severe life threatening diarrhea, most commonly following primary infection. Diarrhea is the major cause of death among children around the world. Responsible for 4 to 6 million deaths per year according to the World Health Organization (WHO), diarrhea is especially dangerous for …

Go to article

A Theoretical Approach To Assessing Annual Energy Balance In Gray Whales (Eschrichtius Robustus), Nathalie Lucie Elizabeth Greenwald Jan 2005

A Theoretical Approach To Assessing Annual Energy Balance In Gray Whales (Eschrichtius Robustus), Nathalie Lucie Elizabeth Greenwald

Electronic Theses and Dissertations

While direct measurements of energetic demands are nearly impossible to collect on large cetaceans, comprehensive bioenergetic models can give insights on such parameters by combining physiological and ecological knowledge. This model was developed to estimate necessary food intake of gray whales, Eschrichtius robustus, of the Eastern North Pacific stock. Field Metabolic Rates (FMR) for gray whales were first estimated based on various assumptions (e.g. volumetric representation of gray whales, extent of their feeding season, and blubber depth distribution) using morphometric data, energetic costs, and food assimilation according to age and gender specific requirements. Food intake rates for gray whales of …

Go to article

Receptor Mediated Oral Delivery Of Bioencapsulated Green Fluorescent Protein Expressed In Transgenic Chloroplasts, Arati Limaye Jan 2005

Receptor Mediated Oral Delivery Of Bioencapsulated Green Fluorescent Protein Expressed In Transgenic Chloroplasts, Arati Limaye

Electronic Theses and Dissertations

The skyrocketing costs of prescription medicine in developed countries and their lack of availability in developing countries are the most challenging problems of human health. Primary reasons for such high cost are fermentation-based production, expensive purification methods, the need for low temperature storage and transportation and the delivery through sterile injections. Most of these expenses could be minimized or eliminated when therapeutic proteins are expressed and orally delivered via plant cells. Chloroplasts have the machinery to fold complex and biologically active eukaryotic proteins in the soluble chloroplast stromal compartment. Protein expression through chloroplast transformation system offers a number of advantages …

Go to article

Historical Responses Of Marine Turtles To Global Climate Change And Juvenile Loggerhead Recruitment In Florida, Joshua Reece Jan 2005

Historical Responses Of Marine Turtles To Global Climate Change And Juvenile Loggerhead Recruitment In Florida, Joshua Reece

Electronic Theses and Dissertations

Marine turtle conservation is most successful when it is based on sound data incorporating life history, historical population stability, and gene flow among populations. This research attempts to provide that information through two studies. In chapter I, I identify historical patterns of gene flow, population sizes, and contraction/expansion during major climatic shifts. In chapter II, I reveal a life history characteristic of loggerhead turtles previously undocumented. I identify a pattern of juvenile recruitment to foraging grounds proximal to their natal nesting beach. This pattern results in a predictable recruitment pattern from juvenile foraging ground aggregations to local rookeries. This research …

Go to article

Native And Invasive Competitors Of The Eastern Oyster Crassostrea Virginica In Mosquito Lagoon, Florida, Michelle Boudreaux Jan 2005

Native And Invasive Competitors Of The Eastern Oyster Crassostrea Virginica In Mosquito Lagoon, Florida, Michelle Boudreaux

Electronic Theses and Dissertations

Populations of Crassostrea virginica within Mosquito Lagoon, Florida have recently undergone significant die-offs, which are a subject of major concern. Restoration efforts within Mosquito Lagoon are focusing on reconstructing the three-dimensional reef habitats. Before effective protocols can be established, however, important questions about the sources of juvenile and adult oyster mortality must be answered. Potential causes of Crassostrea virginica mortality in the Indian River Lagoon system include sediment loads, competition, predation, and disease. My research focused on the interactions between oysters and the competitors that may affect the settlement, growth, and survival of Crassostrea virginica. The four objectives of my …

Go to article

Selenotrisulfide Derivative Of Alpha-Lipoic Acid: Evaluation In A Cell Culture Model For Potential Use As A Topical Antioxidant, Melenie Lee Alonis Jan 2005

Selenotrisulfide Derivative Of Alpha-Lipoic Acid: Evaluation In A Cell Culture Model For Potential Use As A Topical Antioxidant, Melenie Lee Alonis

Electronic Theses and Dissertations

Selenium is a required micronutrient in mammalian cells. It is incorporated in the form of selenocysteine into selenoenzymes such as glutathione peroxidase and thioredoxin reductase, and is absolutely required for activity. Thioredoxin reductase is necessary for reduction of oxidized thioredoxin and therefore plays a major role in maintaining the redox status of the cell. Glutathione peroxidase is responsible for reducing peroxides into their corresponding alcohols and water. Together, these selenoenzymes constitute a significant part of the cell's arsenal to defend itself against oxidative stress. Exogenous sources of oxidative stress, such as UV radiation, are capable of generating reactive oxygen species …

Go to article

How Leadership Affects Follower Satisfaction: The Federal Case, Tracey Trottier Jan 2005

How Leadership Affects Follower Satisfaction: The Federal Case, Tracey Trottier

Electronic Theses and Dissertations

This study focuses on the effect of leadership in the federal government. Using a slightly revised version of Bass's Full Range Leadership Model, the study examines the influence of transformational leadership, transactional leadership, and combination of the two on the perception of leadership effectiveness and follower satisfaction in the federal government. To establish if this revised model is consistent with federal employees' perception of effective leadership, if leadership in the federal government increases follower satisfaction, and if both the transactional and transformational leadership are important to followers' perception of leadership and their satisfaction, data from the 2002 Federal Human Capital …

Go to article

The Influences Of System Affiliation, Size, And Location On Bioterrorism Preparedness Among Florida Hospitals, Kourtney Scharoun Jan 2005

The Influences Of System Affiliation, Size, And Location On Bioterrorism Preparedness Among Florida Hospitals, Kourtney Scharoun

Electronic Theses and Dissertations

In the event of a bioterrorist attack, emergency departments are considered the first line of response for all acute levels of care. This study focused on hospital emergency departments in Florida and the activities, policies, and procedures involved in preparing for a bioterrorist attack. Hospital size, location, and system affiliation were related to attaining these levels, and their impact was assessed. Through a cross-sectional survey design, the physical properties of the 77 hospitals (i.e. facilities, equipment, communication systems, etc.), and the social characteristics of the organizations (managerial functions including: planning, training, financial, and environmental characteristics) were examined. One-way analysis of …

Go to article

Accuracy Of Parental Report On Phonological Inventories Of Toddlers, Kristin Marie Teske Jan 2005

Accuracy Of Parental Report On Phonological Inventories Of Toddlers, Kristin Marie Teske

Electronic Theses and Dissertations

Considering the diminishing availability of professional resources, increasing costs, and time requirements involved in early childhood mass screenings, parents are an essential source of information. In this study, the Survey of Speech Development (SSD) (Perry-Carson & Steel, 2001; Steel, 2000) was used to determine the accuracy of parents in reporting the speech sound inventories of their toddlers. Parents of 30 children, who were between the ages of 27 to 33 months old, completed the SSD prior to a speech and language assessment session. Based on assessment results, the children were classified as normal developing or language delayed. A 20-minute play …

Go to article

The Role Of Domain Expertise And Judgment In Dealing With Unexpected Events, Janeen Kochan Jan 2005

The Role Of Domain Expertise And Judgment In Dealing With Unexpected Events, Janeen Kochan

Electronic Theses and Dissertations

Unexpected events, particularly those creating surprise, interrupt ongoing mental and behavioral processes, creating an increased potential for unwanted outcomes to the situation. Human reactions to unexpected events vary. One can hypothesize a number of reasons for this variation, including level of domain expertise, previous experience with similar events, emotional connotation, and the contextual surround of the event. Whereas interrupting ongoing activities and focusing attention temporarily on a surprising event may be a useful evolutionary response to a threatening situation, the same process may be maladaptive in today's highly dynamic world. The purpose of this study was to investigate how different …

Go to article

Soil Microbial Community Dynamics In Florida Scrub Ecosystem, Maria Albarracin Jan 2005

Soil Microbial Community Dynamics In Florida Scrub Ecosystem, Maria Albarracin

Electronic Theses and Dissertations

Pyrogenic ecosystems are maintained by fires which vary in frequency, seasonality, and intensity. Florida oak-saw palmetto scrub ecosystem is characterized by fires occurring at intervals of 10-20 years. Diverse factors as private land acquisition and development has created a patchy distribution of scrub ecosystems and also interrupted the natural fire cycle. The effects of fire over plant regeneration and fauna habitat utilization of the scrub have been well characterized in previous research. In the present paper the objective is to characterize the short- and long-term fire effects on the soil microbial community. Fire effects were studied in a chronosequence, comprising …

Go to article

Effects Of A Shore Protection Project On Loggerhead And Green Turtle Nesting Activity And Reproduction In Brevard County, Florida, Kelly Brock Jan 2005

Effects Of A Shore Protection Project On Loggerhead And Green Turtle Nesting Activity And Reproduction In Brevard County, Florida, Kelly Brock

Electronic Theses and Dissertations

Marine turtle reproductive success is strongly correlated with the stability and quality of the nesting environment. Because females show fidelity to key nesting beaches, the management and physical characteristics of these beaches directly affect future generations of marine turtles and may be essential for the recovery of these threatened and endangered species. The impacts of beach restoration on loggerhead turtles (Caretta caretta) and on green turtles (Chelonia mydas) were investigated. Previous studies concerning beach nourishment projects have focused on loggerhead turtles. I compared data between nourished and non-nourished areas and between loggerhead and green turtles. I found, at one season …

Go to article

Expression Of Gal/Galnac Lectin Of Entamoeba Histolytica In Transgenic Chloroplasts To Develop A Vaccine For Amebiasis, Seethamahalakshmi Chebolu Jan 2005

Expression Of Gal/Galnac Lectin Of Entamoeba Histolytica In Transgenic Chloroplasts To Develop A Vaccine For Amebiasis, Seethamahalakshmi Chebolu

Electronic Theses and Dissertations

Amebiasis, also defined as invasive intestinal and extra intestinal amebiasis, is caused by Entameoba histolytica, an invasive protozoan parasite. World Health Organization (WHO) has reported that approximately 50 million people are infected each year causing an estimated 40 to 100 thousand deaths annually. Entameoba histolytica ranks only second to malaria as a protozoan cause of death. Amebiasis occurs world wide but people living in Central and South America, Africa and Asia are the majority to suffer from morbidity and mortality. The enteric parasite has no zoonotic reservoirs and insect vectors for its transmission and infects humans and non-human primates. Therefore, …

Go to article

Juvenile Green Turtle (Chelonia Mydas) Foraging Ecology:Feeding Selectivity And Forage Nutrient Analysis, Eliza Gilbert Jan 2005

Juvenile Green Turtle (Chelonia Mydas) Foraging Ecology:Feeding Selectivity And Forage Nutrient Analysis, Eliza Gilbert

Electronic Theses and Dissertations

For the endangered green turtle, Chelonia mydas, a fundamental component of recovery and conservation is an understanding of its foraging ecology. Foraging optimality models suggest animals will select resources of high quality over those of low quality. For green turtles, this behavior is important, as sufficient quantities of nutritionally adequate forage items are necessary for growth and reproduction. One intrinsic element in the understanding of green turtle foraging ecology is to identify and document the availability and quality of forage resources preferred by green turtles. The objectives of this study were: 1) determine whether juvenile green turtles showed a feeding …

Go to article

The Great Divide: Citizenship And Statelessness, Kristy Belton Jan 2005

The Great Divide: Citizenship And Statelessness, Kristy Belton

Electronic Theses and Dissertations

This thesis investigates the implications of State control of citizenship upon the individual's ability to choose membership in a given State polity. It briefly examines how States gained absolute control over the granting, denying and revoking of citizenship and demonstrates how the acquisition of citizenship and statelessness are both State-determined statuses. The repercussions of statelessness at the individual, regional and global levels are presented to demonstrate the severity of being unable to choose a citizenship. Efforts made by States and the international community to prevent and reduce statelessness are examined in order to illustrate the lack of prioritization given to …

Go to article

Mechanical Properties Of The Intervertebral Disc As An Estimator Of Postmortem Interval, Jennifer Noelle Jackson Jan 2005

Mechanical Properties Of The Intervertebral Disc As An Estimator Of Postmortem Interval, Jennifer Noelle Jackson

Electronic Theses and Dissertations

Currently, forensic scientists are only able to determine time since death (or postmortem interval) up to the first 60 hours. This is based largely on insect activity. Herein, it is proposed to use the degradation of the intervertebral disc (IVD) after death to determine a relationship between the mechanical properties of cadaveric tissue and time since death in order to extend the 60-hour window. To that end, 1 fresh human spine and 6 pig spines were each separated into sections (6 human and 48 pig), with each section having one intact disc. The sections were buried, unearthed, and cleaned, leaving …

Go to article

Real-Time Realistic Rendering And High Dynamic Range Image Display And Compression, Ruifeng Xu Jan 2005

Real-Time Realistic Rendering And High Dynamic Range Image Display And Compression, Ruifeng Xu

Electronic Theses and Dissertations

This dissertation focuses on the many issues that arise from the visual rendering problem. Of primary consideration is light transport simulation, which is known to be computationally expensive. Monte Carlo methods represent a simple and general class of algorithms often used for light transport computation. Unfortunately, the images resulting from Monte Carlo approaches generally suffer from visually unacceptable noise artifacts. The result of any light transport simulation is, by its very nature, an image of high dynamic range (HDR). This leads to the issues of the display of such images on conventional low dynamic range devices and the development of …

Go to article

Scene Monitoring With A Forest Of Cooperative Sensors, Omar Javed Jan 2005

Scene Monitoring With A Forest Of Cooperative Sensors, Omar Javed

Electronic Theses and Dissertations

In this dissertation, we present vision based scene interpretation methods for monitoring of people and vehicles, in real-time, within a busy environment using a forest of co-operative electro-optical (EO) sensors. We have developed novel video understanding algorithms with learning capability, to detect and categorize people and vehicles, track them with in a camera and hand-off this information across multiple networked cameras for multi-camera tracking. The ability to learn prevents the need for extensive manual intervention, site models and camera calibration, and provides adaptability to changing environmental conditions. For object detection and categorization in the video stream, a two step detection …

Go to article

A New Paradigm Of Modeling Watershed Water Quality, Fan Zhang Jan 2005

A New Paradigm Of Modeling Watershed Water Quality, Fan Zhang

Electronic Theses and Dissertations

Accurate models to reliably predict sediment and chemical transport in watershed water systems enhance the ability of environmental scientists, engineers and decision makers to analyze the impact of contamination problems and to evaluate the efficacy of alternative remediation techniques and management strategies prior to incurring expense in the field. This dissertation presents the conceptual and mathematical development of a general numerical model simulating (1) sediment and reactive chemical transport in river/stream networks of watershed systems; (2) sediment and reactive chemical transport in overland shallow water of watershed systems; and (3) reactive chemical transport in three-dimensional subsurface systems. Through the decomposition …

Go to article

Stormwater Irrigation Of Saint Augustine Grass: Nitrogen Balance And Evapotranspiration, Ewoud Hulstein Jan 2005

Stormwater Irrigation Of Saint Augustine Grass: Nitrogen Balance And Evapotranspiration, Ewoud Hulstein

Electronic Theses and Dissertations

A change in surface condition of a watershed, which is usually caused by development, can have measured effects on the naturally occurring hydrologic cycle and nitrogen cycle. This could result in environmental problems, such as reduced springflow and eutrophication. In an effort to address these issues, a combination of best management practices (BMPs) can be adhered to. The practice of using excess stormwater as a source for irrigation is proposed as a BMP for the minimization of impacts by development to the hydrologic and nitrogen cycles. To study the proposed BMP, a field experiment was installed in an outdoor location …

Go to article

10th Annual Joseph C. Andrews Mentoring Breakfast, March 3, 2005, Black Faculty And Staff Association Jan 2005

10th Annual Joseph C. Andrews Mentoring Breakfast, March 3, 2005, Black Faculty And Staff Association

BFSA Collection - Mentoring Breakfast Materials

No abstract provided.

Go to article

Voice Track Computer Based Simulation For Medical Training, Alpesh Purshottam Makwana Jan 2005

Voice Track Computer Based Simulation For Medical Training, Alpesh Purshottam Makwana

Electronic Theses and Dissertations

Varying the delivery rate of audio-based text within web-based training increases the effectiveness of the learning process and improves retention when compared with a fixed audio-based text delivery rate. To answer this question, two groups of 20 participants and one group of 10 participants were tested using the Web-based Anatomy & Physiology course modules developed by Medsn, Inc. The control group received the static speed of 128 words per minute while the experimental group received the initial speed of 128 words per minute with the option to change the speed of the audio-based text. An additional experimental group received the …

Go to article

Sandspur, Vol 112, No 15, 2005, Rollins College Jan 2005

Sandspur, Vol 112, No 15, 2005, Rollins College

The Rollins Sandspur

Rollins College student newspaper, written by the students and published at Rollins College. The Sandspur started as a literary journal.

Go to article

Design Of A Dynamic Focusing Microscope Objective For Oct Imaging, Supraja Murali Jan 2005

Design Of A Dynamic Focusing Microscope Objective For Oct Imaging, Supraja Murali

Electronic Theses and Dissertations

Optical Coherence Tomography (OCT) is a novel optical imaging technique that has assumed significant importance in bio-medical imaging in the last two decades because it is non-invasive and provides accurate, high resolution images of three dimensional cross-sections of body tissue, exceeding the capabilities of the current predominant imaging technique –ultrasound. In this thesis, high resolution OCT is investigated for in vivo detection of abnormal skin pathology for the early diagnosis of cancer. The technology presented is based on a dynamic focusing microscopic imaging probe conceived for skin imaging and the detection of abnormalities in the epithelium. A novel method for …

Go to article

First Prev Next Last