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Control Of Stomatal Formation In Arabidopsis Thaliana Inflorescence Stem, Nalini Odapalli Jan 2008

Control Of Stomatal Formation In Arabidopsis Thaliana Inflorescence Stem, Nalini Odapalli

Electronic Theses and Dissertations

Stomata are cellular structures that control water loss and gas exchange through the plant epidermis. Stomata arise from special stem cells called meristemoids through a series of programmed asymmetric divisions that are controlled by cell signaling, or via multitude of regulatory pathways and intercellular communication between epidermal cells. In Arabidopsis thaliana, stomata are spaced non-randomly in the epidermis by cell-cell signaling of the receptor-like protein TOO MANY MOUTHS (TMM) as well as other proteins. Point mutation of the TMM gene prevents the development of stomata in some tissues like inflorescence stems. Investigation of tmm mutant stems showed that self-renewing stem …


Social Grouping Behaviors Of Captive Female Hippopotamus Amphibius, Tracy Blowers Jan 2008

Social Grouping Behaviors Of Captive Female Hippopotamus Amphibius, Tracy Blowers

Electronic Theses and Dissertations

Levels of sociality vary depending on the costs and benefits associated with grouping behavior. Grouping species form either ephemeral aggregations due to resource availability, or structured groups based on familiarity of individuals. Because there are different costs and benefits associated with different types of groups, it is important to understand more about group structure before making predictions about specific behaviors. Female Hippopotamus amphibius are known to aggregate in the wild but the true nature of their grouping behavior is still not understood. My objective was to determine if captive female hippos form either ephemeral aggregations or social groups. Behavioral data, …


The Endocytic Protein Numb Regulates App Metabolism And Notch Signaling: Implications For Alzheimer's Disease, George Kyriazis Jan 2008

The Endocytic Protein Numb Regulates App Metabolism And Notch Signaling: Implications For Alzheimer's Disease, George Kyriazis

Electronic Theses and Dissertations

Increased production of amyloid beta (A-beta) peptide, via altered proteolytic cleavage of amyloid protein precursor (APP), and abnormalities in neuronal calcium homeostasis play central roles in the pathogenesis of Alzheimer's disease (AD). Notch1, a membrane receptor that controls cell fate decisions during development of the nervous system, has been linked to AD because it is a substrate for the gamma-secretase protein complex in which mutations cause early-onset inherited AD. Numb is an evolutionarily conserved endocytic adapter involved in the internalization of transmembrane receptors. Mammals produce four Numb isoforms that differ in two functional domains, a phosphotyrosine-binding domain (PTB) and a …


Assessing And Modeling Mangrove Forest Dynamics Along The Temperate-Subtropical Ecotone In Eastern Florida, Susan Leitholf Jan 2008

Assessing And Modeling Mangrove Forest Dynamics Along The Temperate-Subtropical Ecotone In Eastern Florida, Susan Leitholf

Electronic Theses and Dissertations

Mangrove ecosystems are among the world's most endangered biomes; nearly one-half of the overall coverage is threatened by human activity, invasive species, and global climate change. Mangroves play an important ecosystem role through detrital production and by providing: fisheries and wildlife nursery habitat, shoreline protection, a sink for nutrients, carbon, and sediment. In addition to human activity, the Florida mangroves (Avicennia germinans, Laguncularia racemosa, and Rhizophora mangle) are being threatened by the invasive Brazilian pepper (Schinus terebinthifolius). This study was performed along a 261 km stretch of the east coast of Florida from Sebastian Inlet to the northern extent of …


An Analysis Of Predictors Of Enrollment And Successful Achievement For Girls In High School Advanced Placement Physics, Darlene Depalma Jan 2008

An Analysis Of Predictors Of Enrollment And Successful Achievement For Girls In High School Advanced Placement Physics, Darlene Depalma

Electronic Theses and Dissertations

A problem within science education in the United States persists. U.S students rank lower in science than most other students from participating countries on international tests of achievement (National Center for Education Statistics, 2003). In addition, U.S. students overall enrollment rate in high school Advanced Placement (AP) physics is still low compared to other academic domains, especially for females. This problem is the background for the purpose of this study. This investigation examined cognitive and motivational variables thought to play a part in the under-representation of females in AP physics. Cognitive variables consisted of mathematics, reading, and science knowledge, as …


A Study Of An Attempt To Improve The Reliability Of Teachers' Holistic Scores Of Elementary Writing Through In-House Profess, Lisa Farmer Jan 2008

A Study Of An Attempt To Improve The Reliability Of Teachers' Holistic Scores Of Elementary Writing Through In-House Profess, Lisa Farmer

Electronic Theses and Dissertations

This study evaluated the effectiveness of a school-based training that attempted to improve the reliability of holistic scores teachers assigned to the writings of elementary school students. Seventeen teachers at one suburban elementary school located in the Southeastern United States participated in three training sessions that allowed for scoring practice and group discussions. The trainers, or presenters, were "faculty-experts." A comparison of scores the participants assigned to students' writings before and after the training was conducted. The analyses included t-tests that compared the participants' mean scores to the scores assigned by raters from the state, a within-group analysis of reliability …


An Investigation Of The Efficacy Of The Text Talk Strategy On Pre-School Students' Vocabulary Acquisition, Heather Batchelder Jan 2008

An Investigation Of The Efficacy Of The Text Talk Strategy On Pre-School Students' Vocabulary Acquisition, Heather Batchelder

Electronic Theses and Dissertations

Using a single subject Multiple Baseline design, this study examined the efficacy of the Text Talk vocabulary acquisition strategy with regard to the use of new vocabulary by pre-kindergarten students in an inclusive classroom within a public charter school. Five pre-school students participated in the study. Students with varying exceptionalities as well as students with typical development were included in the study. Three classroom teachers implemented the Text Talk strategy utilizing eight books and vocabulary scenario models during an interactive story time that included the direct instruction of vocabulary in the study. During the baseline and intervention phases data collection …


An Investigation To Determine The Perceptions Of Resilience In Educational And Business Leadership Personnel In Central Florida, Craig Domeck Jan 2008

An Investigation To Determine The Perceptions Of Resilience In Educational And Business Leadership Personnel In Central Florida, Craig Domeck

Electronic Theses and Dissertations

Leadership is a challenging task. Vibrant enduring leadership over time is a greater challenge. Cultivating "leaders that lasts" is the desire of this study. The purpose of this research was to determine the resiliency of leaders in Central Florida. Additionally, this study examined the resilience of educational leaders in Central Florida along with leaders from the business community. The analysis and comparison of the results revealed beneficial information regarding the factors that are substantial in resilient leaders and how these factors might be further cultivated. Educational leaders were randomly selected from school administrators in the Central Florida region, as well …


Development And Forensic Application Of Dye Probe Fluorescence Resonance Energy Transfer For Improved Detection Of Changes In Dn, Micah Halpern Jan 2008

Development And Forensic Application Of Dye Probe Fluorescence Resonance Energy Transfer For Improved Detection Of Changes In Dn, Micah Halpern

Electronic Theses and Dissertations

Discovering, screening, and associating changes in DNA sequence are important to a broad range of disciplines and play a central role in Forensic Science. The typical types of changes include sequence variations [single nucleotide polymorphisms (SNP)] and length variations [short tandem repeats (STR)]. The steps for forensic DNA sample processing are similar for both types of changes but diverge at the point of detection. A number of approaches are being explored for SNP genotyping while STR analysis primarily consists of size-based analysis by capillary electrophoresis. Limitations exist for all current detection methods that pose significant impacts to forensic analysis. Bi-allelic …


Perception And Displays For Teleoperated Robots, Linda Upham Ellis Jan 2008

Perception And Displays For Teleoperated Robots, Linda Upham Ellis

Electronic Theses and Dissertations

In remote or teleoperational tasks involving humans and robots, various aspects of the remote display system may greatly influence the individual's interactions with the teleoperated entity. This dissertation examined various configurations of display systems on several measures of operator performance, physiological states, and perceptions of the task. Display configurations included altering the camera placement (attached to the robot or placed overhead), screen orientation (horizontal or vertical), and screen size (small or large). Performance was measured in terms of specific task goals, accuracies, strategies, and completion times. Physiological state was assessed through physiological markers of arousal, specifically heart rate and skin …


Trait Arousability And Its Impact On Adaptive Multimedia Training, Sae Schatz Jan 2008

Trait Arousability And Its Impact On Adaptive Multimedia Training, Sae Schatz

Electronic Theses and Dissertations

Today's best intelligent, adaptive, multimedia trainers have shown excellent performance; however, their results still fall far-short of what good human tutors can achieve. The overarching thesis of this paper is that future intelligent, adaptive systems will be improved by taking into account relevant, consistent, and meaningful individual differences. Specifically, responding to individual differences among trainees will (a) form more accurate individual baselines within a training system, and (b) better inform system responses (so that they interpret and respond to observable data more appropriately). One variable to consider is trait arousability, which describes individual differences in sensitivity to stimuli. Individuals' arousability …


Health-Care Seeking Behaviors Of Puerto Ricans With Diabetes Mellitus Who Live In South Florida: An Exploratory Study, Laura Gonzalez Jan 2008

Health-Care Seeking Behaviors Of Puerto Ricans With Diabetes Mellitus Who Live In South Florida: An Exploratory Study, Laura Gonzalez

Electronic Theses and Dissertations

Latinos are the fastest growing minority population in the United States (U.S.) and have the worst access to health care of any ethnic group. The chronic disease of diabetes is twice as common in adult Latinos as in non-Latino whites, and the risk of death related to diabetes is twofold. Reasons for this disparity have yet to be clearly identified. This study had two purposes: 1) to explore cultural beliefs regarding health-care seeking behaviors in Puerto Ricans with diabetes who live in South Florida; and 2) to examine Puerto Ricans' perceptions about their health-care providers. The cultural phenomena of interest …


Integrated Optical Spr (Surface Plasmon Resonance) Sensor Based On Optoelectronic Platform, Hyungseok Bang Jan 2008

Integrated Optical Spr (Surface Plasmon Resonance) Sensor Based On Optoelectronic Platform, Hyungseok Bang

Electronic Theses and Dissertations

Current major demands in SPR sensor development are system miniaturization and throughput improvement. Structuring an array of integrated optical SPR sensor heads on a semiconductor based optoelectronic platform could be a promising solution for those issues, since integrated optical waveguides have highly miniaturized dimension and the optoelectronic platform enables on-chip optical-to-electrical signal conversion. Utilizing a semiconductor based platform to achieve optoelectronic functionality poses requirements to the senor head; the sensor head needs to have reasonably small size while it should have reasonable sensitivity and fabrication tolerance. This research proposes a novel type of SPR sensor head and demonstrates a fabricated …


Extended Focus Range High Resolution Endoscopic Optical Coherence Tomography, Kye-Sung Lee Jan 2008

Extended Focus Range High Resolution Endoscopic Optical Coherence Tomography, Kye-Sung Lee

Electronic Theses and Dissertations

Today, medical imaging is playing an important role in medicine as it provides the techniques and processes used to create images of the human body or parts thereof for clinical purposes (medical procedures seeking to reveal, diagnose or examine disease) or medical science (including the study of normal anatomy and function). Modalities are developing over time to achieve the highest possible resolution, speed of image acquisition, sensitivity, and specificity. In the past decade, advances in optics, fiber, as well as laser technology have enabled the development of noninvasive optical biomedical imaging technology that can also be applied to endoscopy to …


Resiliency Factors And Pathways To Incarceration In Female Survivors Of Childhood Sexual Abuse, Kia Asberg Jan 2008

Resiliency Factors And Pathways To Incarceration In Female Survivors Of Childhood Sexual Abuse, Kia Asberg

Electronic Theses and Dissertations

Studies find consistently that survivors of childhood sexual abuse (CSA) are likely to suffer from depression, post-traumatic stress, and problematic substance use, and may experience also a variety of adjustment difficulties in several emotional, behavioral, and interpersonal domains. Involvement with the legal system is one such outcome to consider, especially given the increasing number of women serving time in correctional facilities with nearly two-thirds of these women being survivors of CSA (e.g., Browne, Miller, & Maguin, 1999). The current literature lacks comparisons between female survivors of CSA who have legal involvement and those who do not; hence, the current study …


Investigating The Effects Of Tactile Stress On A Military Touniquet Application Task, Razia Nayeem Jan 2008

Investigating The Effects Of Tactile Stress On A Military Touniquet Application Task, Razia Nayeem

Electronic Theses and Dissertations

In combat, soldiers encounter stress from multiple sources including loss of sleep, extremely high levels of physical and psychological discomfort, extended periods of increased vigilance, and intense danger. Therefore, it is imperative to train such personnel on how to cope with these stressors. One way to do this is to include stressors in different forms of training to acclimate soldiers to the subsequent stress of combat. Due to their advantages, tactile trainers are being investigated increasingly for the use of training Army medics in this context. The present work examines how vibrating tactile sensors, or tactors, can be used as …


Game On: The Impact Of Game Features In Computer-Based Training, Renee Derouin-Jessen Jan 2008

Game On: The Impact Of Game Features In Computer-Based Training, Renee Derouin-Jessen

Electronic Theses and Dissertations

The term "serious games" became popularized in 2002 as a result of an initiative to promote the use of games for education, training, and other purposes. Today, many companies are using games for training and development, often with hefty price tags. For example, the development budget for the U.S. Army recruiting game, "America's Army" was estimated at $7 million. Given their increasing use and high costs, it is important to understand whether game-based learning systems perform as billed. Research suggests that games do not always increase learning outcomes over conventional instruction. However, certain game features (e.g., rules/goals, fantasy, challenge) might …


Initial Validation Of Novel Performance-Based Measures: Mental Rotation And Psychomotor Ability, Philip Fatolitis Jan 2008

Initial Validation Of Novel Performance-Based Measures: Mental Rotation And Psychomotor Ability, Philip Fatolitis

Electronic Theses and Dissertations

Given the high-risk nature of military flight operations and the significant resources required to train U.S. Naval Aviation personnel, continual improvement is required in the selection process. In addition to general commissioning requirements and aeromedical standards, the U.S. Navy utilizes the Aviation Selection Test Battery (ASTB) to select commissioned aviation students. Although the ASTB has been a good predictor of aviation student performance in training, it was proposed that incremental improvement could be gained with the introduction of novel, computer administered performancebased measures: Block Rotation (BRT) and a Navy-developed Compensatory Tracking task. This work constituted an initial validation of the …


Sexuality And Courtships Of 19th Century Vienna Vs 21st Century America Through The Roles Of Alfred And Sam In Romance, Romance, James Haynie Jan 2008

Sexuality And Courtships Of 19th Century Vienna Vs 21st Century America Through The Roles Of Alfred And Sam In Romance, Romance, James Haynie

Electronic Theses and Dissertations

For my thesis, I plan to research the sexuality and the process of courtship, and the differences between 19th century Vienna and modern America, specifically as to how it relates to my characters in Romance, Romance. My interest in the topic springs directly from the script. What I mean is, my initial idea of sexuality of the 19th century is very Victorian and straight-laced, where as I think of modern day as very sexually liberated. However, in the script, the first act, set in Vienna, is much more sexually explicit and active. In fact, the second act is all building …


Emulating The Swedes: An Exploration Of The Developing Trends In Swedish Theatre For Young Audiences, Amanda Wolgast Jan 2008

Emulating The Swedes: An Exploration Of The Developing Trends In Swedish Theatre For Young Audiences, Amanda Wolgast

Electronic Theses and Dissertations

As a practitioner in the field of Theatre for Young Audiences (TYA), I have always been drawn to looking at literature and productions that challenge my preconceptions of what constitutes good theatre for youth. I enjoy the bold and innovative, versus the cute and playful. My training and education in this developing branch of theatre has undoubtedly exposed me to the many accomplishments of the American TYA system, but quite often - through attending conferences, as well as participating in class discussions - I find that many debates/conversations center around what more we need to do in this field or …


The Identification Of Ignitable Liquids In The Presence Of Pyrolysis Products: Generation Of A Pyrolysis Product Database, Joseph Castelbuono Jan 2008

The Identification Of Ignitable Liquids In The Presence Of Pyrolysis Products: Generation Of A Pyrolysis Product Database, Joseph Castelbuono

Electronic Theses and Dissertations

The fire debris analyst is often faced with the complex problem of identifying ignitable liquid residues in the presence of products produced from pyrolysis and incomplete combustion of common building and furnishing materials. The purpose of this research is to investigate a modified destructive distillation methodology provided by the Florida Bureau of Forensic Fire and Explosive Analysis to produce interfering product chromatographic patterns similar to those observed in fire debris case work. The volatile products generated during heating of substrate materials are extracted from the fire debris by passive headspace adsorption and subsequently analyzed by GC-MS. Low density polyethylene (LDPE) …


Identification Of Fhb Resistance Qtl In Tokai-66, Noah A. Wiedel Jan 2008

Identification Of Fhb Resistance Qtl In Tokai-66, Noah A. Wiedel

Electronic Theses and Dissertations

Japanese wheat cultivar "Tokai-66" was profiled for resistance Quantitative Trait Loci (QTL) pertaining to Fusarium Head Blight (FHB), a devastating disease of wheat and barley resulting in reduction of yield, and contamination of grain with mycotoxins. This was accomplished with a population (175 F2 7) of Recombinant Inbred Lines derived from a cross between Tokai-66 and a susceptible Tibetan land race known as Yl 193-6. The disease response was recorded over three greenhouse trials. FHB was initiated with single floret injections of IO μL of a I 00,000 conidia per milliliter of inoculum. After inoculation, heads were incubated in moist …


The Effect Of Selective Cholinergic Lesion Of Medial Septum On Recognition Memory, Li Cai Jan 2008

The Effect Of Selective Cholinergic Lesion Of Medial Septum On Recognition Memory, Li Cai

Electronic Theses and Dissertations

The objective of this study was to clarify the role of septal-hippocampal cholinergic neurons in object and spatial recognition memory. Stereotaxic-surgical infusion of the selective cholinergic neurotoxin, 192IgG-saporin (SAP), into the medial septum (MS) of Sprague-Dawley rats was utilized to establish an animal model of cholinergic deficit of the septal-hippocampal tract, which had been expected as a pathologic model of memory impairment for Alzheimer's disease (AD). Three types of recognition memory were examined: retrograde object recognition, anterograde object recognition, and anterograde spatial recognition. These were examined with a modified version of a standard object recognition paradigm. For retrograde memory retention …


Qtl Mapping For Fusarium Head Blight Resistance In A 'Sumai-3' X 'Y1193-6' Spring Wheat Population, Bhoja Raj Basnet Jan 2008

Qtl Mapping For Fusarium Head Blight Resistance In A 'Sumai-3' X 'Y1193-6' Spring Wheat Population, Bhoja Raj Basnet

Electronic Theses and Dissertations

Much effort has been invested in identification of molecular markers linked to quantitative trait loci (QTL) that confer Fusarium Head Blight (FHB) resistance, though levels significantly higher than those of 'Sumai-3' remain elusive. Additional resistance QTLs may exist which typically are overshadowed by partial resistance of susceptible parents used in development of mapping populations. The objectives of this research were: (a) Evaluate the mapping population for incidence, severity and disease index values (b) Genotype the whole population with both marker types (DArT and SSR) and (c) Create a linkage map to examine the association between resistance phenotypes and markers in …


Tillage Erosion Coefficients For Selected Tillage Tools, Javier Mollinendo Jan 2008

Tillage Erosion Coefficients For Selected Tillage Tools, Javier Mollinendo

Electronic Theses and Dissertations

Soil loss as a result of differential translocation of soil by tillage is widespread in regions with irregular topography. Tillage erosion models are based on field derived transport coefficients that are specific to the tillage tool being used. Variables like speed and depth of tillage can modify tillage erosion transport coefficients. Four treatments were established for this research: moldboard plow, chisel plow, tandem disk, and no-till drill. The primary research site was located in Rock County MN, 43° 39 '40.24 "N, and 96° 24' 17.25" W, with a fine-loamy, mixed, superactive, mesic Cumulic Endoaquolls (USDA, 2006). The objectives of this …


Toward A New Social Contract: A Tripartite Mixed-Methods Analysis Of Social Sustainability At Three Land-Grant Universities, Lyndsay Josephine Agans Jan 2008

Toward A New Social Contract: A Tripartite Mixed-Methods Analysis Of Social Sustainability At Three Land-Grant Universities, Lyndsay Josephine Agans

Electronic Theses and Dissertations

Increasingly, colleges and universities in the United States are adapting toward a model of behavior that incorporates issues of sustainability. This adaptation in universities and in society has implications on the organizational and nation-state level, the very core of which may serve to reshape the social contract between the two. In addition to supplying a strong counter-hegemonic argument that alters the competitive economic agenda-setting paradigm, this study serves as a tripartite comparative case study analysis of university adaptation toward social sustainability. By employing a social capital lens to understanding social sustainability in higher education, this study seeks to examine the …


Self-Management Of Type 2 Diabetes In Appalachina Women., Melissa Joy Magness Dec 2007

Self-Management Of Type 2 Diabetes In Appalachina Women., Melissa Joy Magness

Electronic Theses and Dissertations

Gender, minority, and regional-related disparities have been documented in diabetes management. Self-efficacy, the belief in one's ability to carry out the actions mandated by a task, has been identified as a key predictor in glycemic control; however, it has not been investigated in rural, female populations. This cross-sectional, correlation investigation examined the relationships among self-efficacy, depression, and diabetes self-care management in women living in Appalachia with type 2 diabetes. Using Bandura's Social Cognitive Theory, 85 women ages ≥ 21 with type 2 diabetes for a minimum of 6 months who were residents in Appalachia completed the 1) Diabetes Self-Efficacy Scale, …


Light Image Therapy In The Health Care Environment., Anna Rae Dutro Dec 2007

Light Image Therapy In The Health Care Environment., Anna Rae Dutro

Electronic Theses and Dissertations

Use of positive distraction in the built healthcare environment to assist in alleviating stress in a patient was investigated. A backlit light image was mounted in the ceiling of an examination room to create a positive distraction for patients in the ETSU Pediatric Clinic in Johnson City, TN. Survey instruments were used to collect sample data from patients and physicians in a randomized, balanced controlled study designed to determine if patients experienced less stress in the room with the backlit image as compared to other rooms (treatments). Although a statistical difference was not determined between the room with the backlit …


1, Structural And Functional Studies Of Human Replication Protein A; 2 Dna Damage Responses And Dna Repair Defects In Laminopathy-Based Premature Aging., Yiyong Liu Dec 2007

1, Structural And Functional Studies Of Human Replication Protein A; 2 Dna Damage Responses And Dna Repair Defects In Laminopathy-Based Premature Aging., Yiyong Liu

Electronic Theses and Dissertations

The genome of mammalian cells is under constant attack from DNA-damaging agents. To maintain genomic integrity, cells activate an array of pathways primarily consisting of DNA repair and DNA damage checkpoints. Human replication protein A (RPA), a single-stranded DNA (ssDNA) binding protein, is essential for almost all DNA metabolic pathways. However, the role of RPA in nucleotide excision repair (NER), a DNA repair pathway for removing bulky DNA lesions, remains elusive. In this study, the binding of RPA to a battery of well-defined ssDNA substrates has been systematically examined using fluorescence spectroscopy. The results showed that RPA has a lower …


Analysis Of Selected Correlates Of Spouse Abuse And The Policy Implications For The Criminal Justice System., Marlys Kay Tester Dec 2007

Analysis Of Selected Correlates Of Spouse Abuse And The Policy Implications For The Criminal Justice System., Marlys Kay Tester

Electronic Theses and Dissertations

Research on spouse abuse has received greater attention during the last 3 decades around the world. This research was conducted to investigate the selected correlates of alcohol use, drug use, and marital status and the effects they have on use of weapons and violent behavior. The secondary data used was from a study done in Chicago from 1995-1998, called the Chicago Community Crime Prevention and Intimate Violence Study. There were 210 domestic violence victims studied in one Chicago area. Each victim was asked a series of the same questions. It was found that 39.4% of the domestic violence cases involved …