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

Digital Commons Network™

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

Electronic Theses and Dissertations

Discipline
Institution
Keyword
Publication Year

Articles 1951 - 1980 of 8968

Full-Text Articles in Entire DC Network

The Effects Of Dynamic Versus Isometric Postactivation Potentiation On Collegiate Female Rowers, Idan Harat May 2019

The Effects Of Dynamic Versus Isometric Postactivation Potentiation On Collegiate Female Rowers, Idan Harat

Electronic Theses and Dissertations

Post-activation potentiation (PAP) has been shown to improve acute power-based performance, and the potential to enhance rowing performance. To examine PAP effects with rowing performance, 40 collegiate female rowers performed isometric potentiating (ISO), dynamic potentiating (DYN) and typical control (CON) warm-up protocols, after which they completed a three-minute all-out test (3MT) to evaluate their total distance, peak power, mean power, critical power, anaerobic working capacity (W') and stroke rate. Fifteen-second splits for distance and mean power were also analyzed. The PAP protocols were performed on a rowing ergometer, in a movement pattern that simulated rowing. ISO consisted of 5 × …

Go to article

Threatening Instructions During A Hurricane Influence Risk Perceptions: The Case Of Fear Appeals And Changing Hurricane Projections, Daphne Whitmer May 2019

Threatening Instructions During A Hurricane Influence Risk Perceptions: The Case Of Fear Appeals And Changing Hurricane Projections, Daphne Whitmer

Electronic Theses and Dissertations

The goal of this research was to examine the effectiveness of persuasive language in the protective action recommendation of an emergency warning, which instructs people how to prepare and stay safe. Study 1 was a pilot study, which suggested that participants were able to make distinctions between hurricane categories. In study 2, the presence of fear language and second-person personal pronouns (i.e., "you") in a recommendation was manipulated. Overall, fear language was more influential than a pronoun on risk perceptions. To understand how context influences risk perceptions, participants in study 3 made decisions after each piece of information received. The …

Go to article

Machine Learning From Casual Conversation, Awrad Mohammed Ali May 2019

Machine Learning From Casual Conversation, Awrad Mohammed Ali

Electronic Theses and Dissertations

Human social learning is an effective process that has inspired many existing machine learning techniques, such as learning from observation and learning by demonstration. In this dissertation, we introduce another form of social learning, Learning from a Casual Conversation (LCC). LCC is an open-ended machine learning system in which an artificially intelligent agent learns from an extended dialog with a human. Our system enables the agent to incorporate changes into its knowledge base, based on the human's conversational text input. This system emulates how humans learn from each other through a dialog. LCC closes the gap in the current research …

Go to article

Describing Images By Semantic Modeling Using Attributes And Tags, Mahdi Mahmoudkalayeh May 2019

Describing Images By Semantic Modeling Using Attributes And Tags, Mahdi Mahmoudkalayeh

Electronic Theses and Dissertations

This dissertation addresses the problem of describing images using visual attributes and textual tags, a fundamental task that narrows down the semantic gap between the visual reasoning of humans and machines. Automatic image annotation assigns relevant textual tags to the images. In this dissertation, we propose a query-specific formulation based on Weighted Multi-view Non-negative Matrix Factorization to perform automatic image annotation. Our proposed technique seamlessly adapt to the changes in training data, naturally solves the problem of feature fusion and handles the challenge of the rare tags. Unlike tags, attributes are category-agnostic, hence their combination models an exponential number of …

Go to article

Defects In Fetal Mouth Movement And Pharyngeal Patterning Underlie Cleft Palate Caused By Retinoid Deficiency., Regina Friedl May 2019

Defects In Fetal Mouth Movement And Pharyngeal Patterning Underlie Cleft Palate Caused By Retinoid Deficiency., Regina Friedl

Electronic Theses and Dissertations

Cleft palate is a common birth defect. Etiologic mechanisms of palate cleft include defects in palate morphogenesis, mandibular growth, or spontaneous fetal mouth movement. Cleft palate linked to deficient fetal mouth movement has been demonstrated directly only in a single experimental model of loss of neurotransmission. Here, using retinoid deficient mouse embryos, we demonstrate directly for the first time that deficient fetal mouth movement and cleft palate occurs as a result of mis-patterned development of pharyngeal peripheral nerves and cartilages. Retinoid deficient embryos were generated by inactivation of retinol dehydrogenase 10 (Rdh10), which is critical for production of …

Go to article

Cooking Lessons: Oral Recipe Sharing In The Southern Kitchen, Alana Claxton May 2019

Cooking Lessons: Oral Recipe Sharing In The Southern Kitchen, Alana Claxton

Electronic Theses and Dissertations

This study analyzes oral recipe sharing practices as they emerge in Southern cooking. Researcher and participants were immersed in cooking recipes together in a qualitative research method that combined interactive interviewing with sensory ethnography. Findings revealed a category of oral recipe sharing practices that is missing from the literature: cooking lessons. This study identified cooking lessons as a distinct recipe sharing practice and worked to further operationalize and concretize such practices in hopes of spurring further research.

Go to article

The Evolution Of The Marketing And Branding Strategies For The National Parks, Blake Smith May 2019

The Evolution Of The Marketing And Branding Strategies For The National Parks, Blake Smith

Electronic Theses and Dissertations

Since the first national park Yellowstone was established, people from across the world have come to visit the natural wonders that our national parks have to offer. While much empirical research has been conducted concerning the marketing and branding strategies of non-profit organizations, government agencies, and tourism destinations; not much has been conducted on national parks. This research seeks to understand how our national parks have marketed and branded themselves over time and determine how marketing and branding will play a role in the development and conservation of the parks. This research was conducted utilizing in- depth methods such as …

Go to article

The Unsung Hero Character: A Harbinger Device Of Misfortune, Eutimio Talavera May 2019

The Unsung Hero Character: A Harbinger Device Of Misfortune, Eutimio Talavera

Electronic Theses and Dissertations

This thesis introduces an obscure storytelling device, The Unsung Hero character, as one way of examining how movies function as stories. This character is often overlooked, as it frequently cloaks its idiosyncrasies, thus it lacks any apparent signs of internal conflict. This analysis foregrounds the character’s overall functionality, found only in rare instances and typically in the story of a movie. With effective implementation in a story, as a functional harbinger device, brief appearances of The Unsung Hero character demonstrate flashpoints or disclosures of a forthcoming misfortune in the story. This movie analysis shows how The Unsung Hero character functions …

Go to article

Ecometric Estimation Of Present And Past Climate Of North America Using Crown Heights Of Rodents And Lagomorphs: With Application To The Middle Miocene Climatic Optimum, Julia Schap May 2019

Ecometric Estimation Of Present And Past Climate Of North America Using Crown Heights Of Rodents And Lagomorphs: With Application To The Middle Miocene Climatic Optimum, Julia Schap

Electronic Theses and Dissertations

Continental scale studies on ungulate crown heights in relation to climate and habitat changes have revealed a correlation between increasing hypsodonty and a shift to more arid environments. Small mammals have been shown to adapt to changing habitats millions of years earlier than larger mammals. In this study I examined fossil localities throughout the last 37 Ma across North America. Diversity of rodents and lagomorphs were analyzed through this time period, with examination of community structure characterized by relative percentages of taxa with different crown heights. Overall, a decrease in precipitation and temperature was found across North America from 37 …

Go to article

Differentiating Black Bears (Ursus Americanus) And Brown Bears (U. Arctos) Using Linear Tooth Measurements And Identification Of Ursids From Oregon Caves National Monument, Emily Bogner May 2019

Differentiating Black Bears (Ursus Americanus) And Brown Bears (U. Arctos) Using Linear Tooth Measurements And Identification Of Ursids From Oregon Caves National Monument, Emily Bogner

Electronic Theses and Dissertations

North American black bears and brown bears can be difficult to distinguish in the fossil record due to similar dental and skeletal morphologies. Challenges identifying ursid material from Oregon Caves National Monument (ORCA) called for an accurate tool to distinguish the species. This study utilized a large database of lower tooth lengths and ratios in an attempt to differentiate black and brown bears in North America. Further, this project examined how these linear measurements differ geographically. Analysis of variance (ANOVA) found significant differences between black and brown bears from across North America for every variable studied. Stepwise discriminant analyses (DA) …

Go to article

"We Germans Fear God, And Nothing Else In The World!" Military Policy In Wilhelmine Germany, 1890-1914, Cavender Sutton May 2019

"We Germans Fear God, And Nothing Else In The World!" Military Policy In Wilhelmine Germany, 1890-1914, Cavender Sutton

Electronic Theses and Dissertations

Throughout the Second Reich’s short life, military affairs were synonymous with those of the state. Indeed, it was the zeal and blood of Prussian soldiers that allowed the creation of a unified German empire. After solidifying itself as a major power, things grew more complicated as the Reich found itself increasingly surrounded by hostile rivals. To the west, French humiliation over their catastrophic defeat in 1870-71 continued to fester while, in the east, Russian sympathies for the new empire waned. The finalization of a Franco-Russian alliance in 1894 meant Germany faced formidable adversaries along her eastern and western borders. That …

Go to article

North Of Ourselves: Identity And Place In Jim Wayne Miller’S Poetry, Micah Mccrotty May 2019

North Of Ourselves: Identity And Place In Jim Wayne Miller’S Poetry, Micah Mccrotty

Electronic Theses and Dissertations

Jim Wayne Miller’s poetry examines how human history and topography join to create place. His work often incorporates images of land and ecology; it deliberately questions the delineation between place and self. This thesis explores how Miller presents images of water to describe the relationship between inhabitants and their location, both with the positive image of the spring and the negative image of the flood. Additionally, this thesis examines how the Brier, Miller’s most prominent persona character, grieves his separation from home and ultimately finds healing and reunification of the self through his return to the hills. In his poetry, …

Go to article

Paleoecology And Land-Use Of Quaternary Megafauna From Saltville, Virginia, Emily Simpson May 2019

Paleoecology And Land-Use Of Quaternary Megafauna From Saltville, Virginia, Emily Simpson

Electronic Theses and Dissertations

Land-use, feeding habits, and response to seasonality by Quaternary megaherbivores in Saltville, Virginia, is poorly understood. Stable isotope analyses of serially sampled Bootherium and Equus enamel from Saltville were used to explore seasonally calibrated (δ18O) patterns in megaherbivore diet (δ13C) and land-use (87Sr/86Sr). Overall, this dataset suggests an open forest with relatively constant temperatures year round that were similar to modern conditions. Neither Bootherium or Equus individuals spent a significant amount of time at higher elevations in the nearby Blue Ridge geologic province. These analyses provide a unique perspective on long-term response …

Go to article

Transparency And Communication Patterns In Human-Robot Teaming, Shan Lakhmani May 2019

Transparency And Communication Patterns In Human-Robot Teaming, Shan Lakhmani

Electronic Theses and Dissertations

In anticipation of the complex, dynamic battlefields of the future, military operations are increasingly demanding robots with increased autonomous capabilities to support soldiers. Effective communication is necessary to establish a common ground on which human-robot teamwork can be established across the continuum of military operations. However, the types and format of communication for mixed-initiative collaboration is still not fully understood. This study explores two approaches to communication in human-robot interaction, transparency and communication pattern, and examines how manipulating these elements with a robot teammate affects its human counterpart in a collaborative exercise. Participants were coupled with a computer-simulated robot to …

Go to article

Gamification: Badges And Feedback, Brian Macon May 2019

Gamification: Badges And Feedback, Brian Macon

Electronic Theses and Dissertations

Gamification, the implementation of game elements in a non-game context, is a rapidly growing field of research. One element of gamification that has experienced a rapid growth in popularity is the use of digital badges. Despite widespread adoption in educational settings, there are still gaps in the understanding of their effects on motivation, engagement, learning, and other factors. Furthermore, feedback delivered through badges can include a symbolic reward for successful completion of a task, providing a credential for gaining a skill, or acknowledging mastery of a particular piece of knowledge. This study implemented digital badges in online courses at a …

Go to article

The Effects Of A 10-Week Judo Program On Cortisol And Stress In Children With Autism Spectrum Disorder, Justine Renziehausen May 2019

The Effects Of A 10-Week Judo Program On Cortisol And Stress In Children With Autism Spectrum Disorder, Justine Renziehausen

Electronic Theses and Dissertations

Children diagnosed with Autism Spectrum Disorder (ASD) often have increased levels of stress, leading to dysregulated production of cortisol. Elevated levels of cortisol have numerous known adverse health consequences, and therefore, interventions should be established to help attenuate cortisol production. As judo combines physical activity and mindfulness practice, it may aid in stress reduction and decreased levels of cortisol. Purpose: To examine the effects of a 10-week judo program on stress reactions and salivary cortisol levels in youth with ASD. Methods: 20 children with ASD participated in the 10-week judo program. Changes in acute (before and after one judo session) …

Go to article

Detection Of Mercury Through Surface Plasmon Resonance Of Immobilized Gold Nanorods, Khang Trieu May 2019

Detection Of Mercury Through Surface Plasmon Resonance Of Immobilized Gold Nanorods, Khang Trieu

Electronic Theses and Dissertations

Mercury is a known environmental pollutant that can damage the brain, heart, kidney and lungs upon exposure. Emissions from fossil fuel plants can release mercury into the air, where it can settle into the water supply and be exposed to human and aquatic life. The use of gold nanorods functionalized on solid substrates as a mercury sensor in tap water samples is investigated herein. The functionalization of the substrates involves the physical immobilization of the nanorods onto the solid surface through the use of (3-mercaptopropyl)trimethoxysilane (MPTMS). The immobilization of the nanorods drastically increases their stability, allowing for use in complicated …

Go to article

Preparation Of A Flavonol Specific Glucosyltransferase Found In Grapefruit And Site-Directed Mutants For Protein Crystallization, Aaron Birchfield May 2019

Preparation Of A Flavonol Specific Glucosyltransferase Found In Grapefruit And Site-Directed Mutants For Protein Crystallization, Aaron Birchfield

Electronic Theses and Dissertations

This research was designed to determine the conditions necessary to remove c-myc and 6x-His tags from a flavonol specific glucosyltransferase found in grapefruit (CP3GT) using thrombin in preparation for crystallization. X-ray crystallography of CP3GT crystals may elucidate structural features that account for flavonol specificity in some glucosyltransferase enzymes. A thrombin cleavage site was inserted into WT CP3GT and one mutant. Recombinant CP3GT was expressed in yeast and purified. Optimal conditions for thrombin digestion were explored. Digestion with 100U of thrombin for 2 hours at 4o C was optimal for removing tags from CP3GT. Storage at 4o C for …

Go to article

Children Of A One-Eyed God: Impairment In The Myth And Memory Of Medieval Scandinavia, Michael David Lawson May 2019

Children Of A One-Eyed God: Impairment In The Myth And Memory Of Medieval Scandinavia, Michael David Lawson

Electronic Theses and Dissertations

Using the lives of impaired individuals catalogued in the Íslendingasögur as a narrative framework, this study examines medieval Scandinavian social views regarding impairment from the ninth to the thirteenth century. Beginning with the myths and legends of the eddic poetry and prose of Iceland, it investigates impairment in Norse pre-Christian belief; demonstrating how myth and memory informed medieval conceptualizations of the body. This thesis counters scholarly assumptions that the impaired were universally marginalized across medieval Europe. It argues that bodily difference, in the Norse world, was only viewed as a limitation when it prevented an individual from fulfilling roles that …

Go to article

An Investigation Into The Structure Of Self-Control, Parker A. Dreves May 2019

An Investigation Into The Structure Of Self-Control, Parker A. Dreves

Electronic Theses and Dissertations

Self-control has been measured using a variety of methods including self-report measures, cognitive inhibition tasks, delay discounting and delay of gratification tasks, and persistence and willpower tasks. Although these are all theoretically linked to processes involved in self-control, recent evidence has shown that these diverse measurement techniques relate only minimally to one another. Assuming that self-control is a reflective construct, this would indicate that many of these tasks are poor indicators of self-control. The present research challenges the common assumption that self-control is a reflective construct and instead proposes that self-control is a formative construct. Conceptualizing self-control as a formative …

Go to article

Perceptions Of Soring In Tennessee Walking Horses, Hannah Medford May 2019

Perceptions Of Soring In Tennessee Walking Horses, Hannah Medford

Electronic Theses and Dissertations

The purpose of this study is to explore the perceptions of soring in the Tennessee Walking Horse industry. Although a limited amount of research has focused on the practice, this is the first known study to utilize a criminological lens to better understand the perceptions and motivations of its use. The study relies upon data collected from Tennessee Walking Horse trainers, event attendees, and Designated Qualified Persons (DQPs), which are analyzed via a mixed-methods approach. Agnew’s (1998) theory on the causes of animal abuse serves as the theoretical framework for this analysis. Results provide a moderate amount of support for …

Go to article

Performing Bernarda: Activating Power And Identity, Ana Martinez Medina May 2019

Performing Bernarda: Activating Power And Identity, Ana Martinez Medina

Electronic Theses and Dissertations

The musical Bernarda Alba tells the story of a woman who is confined within the heavily patriarchal and Catholic society that was 1930s Spain. Because of this, I thought it the perfect arena to explore power dynamics on stage. My thesis will explore status, hierarchies, relationships, and identity via the stolid matriarchal character Bernarda Alba. Through analyzing the playwright's words, fleshing out the character, and exploring the character's relationships with others in rehearsal, I have studied how to activate status on stage. There are many sociology theories and psychological studies that can be applied to theatre-making in order to create …

Go to article

Telomeric Dna Damage And Repair Machineries In Hiv Infection, Lam Nguyen May 2019

Telomeric Dna Damage And Repair Machineries In Hiv Infection, Lam Nguyen

Electronic Theses and Dissertations

In this thesis, we investigated T cell homeostasis and DNA damage repair machineries in HIV infection. We found that the frequencies of CD4T cells were low, which is associated with cell apoptosis in HIV patients compared to healthy subjects. Importantly, these events were closely correlated to the increase in T cell exhaustion, senescence, DNA damage, and telomere attrition. Mechanistically, while the DNA damage sensors Mer11, Rad50, and NBS1 (MRN) complexes remained intact, the ataxia-telangiectasia mutated (ATM) kinase and its downstream checkpoint kinase 2 (CHK2) were significantly inhibited during HIV infection. Additionally, telomeric repeat-binding factor 2 (TRF2) that functions to protect …

Go to article

For Natural Philosophy And Empire: Banks, Cook, And The Construction Of Science And Empire In The Late Eighteenth Century, Ryan Barker May 2019

For Natural Philosophy And Empire: Banks, Cook, And The Construction Of Science And Empire In The Late Eighteenth Century, Ryan Barker

Electronic Theses and Dissertations

Using part of James Cook’s first voyage of discovery in which he explored the Australian coast, and Joseph Banks’s 1772 voyage to Iceland as case studies, this thesis argues that late eighteenth-century travelers used scientific voyages to present audiences at home with a new understanding and scientific language in which to interpret foreign places and peoples. As a result, scientific travelers were directly influential not only in the creation of new forms of knowledge and intellectual frameworks, but they helped direct the shape and formation of the Empire. The thesis explores the interplay between institutional influence and individual agency in …

Go to article

Religiosity, Parental Support, And Formal Volunteering Among Teenagers, Isaac Paintsil May 2019

Religiosity, Parental Support, And Formal Volunteering Among Teenagers, Isaac Paintsil

Electronic Theses and Dissertations

Few countries can boast of having the culture of formal volunteering seen in the United States. In explaining this phenomenon, many empirical studies have found religiosity significant in predicting behaviors among young adults, adults, and the elderly. However, teens (13 – 17 years) have not attracted much attention from researchers, though they possess the time and resources most needed to volunteer. Using data from the National Study on Youth and Religion (NSYR) Wave 1, this study examines the relationship between formal volunteering and teens’ individual (religious salience and religious experience) and collective religiosity (religious tradition, church attendance, and religious youth …

Go to article

Effect Of Prebiotic, Probiotic, And Enzyme Supplementation On Gut Fermentation, Markers Of Inflammation And Immune Response In Individuals With Gi Symptoms, Kaitlyn Webb May 2019

Effect Of Prebiotic, Probiotic, And Enzyme Supplementation On Gut Fermentation, Markers Of Inflammation And Immune Response In Individuals With Gi Symptoms, Kaitlyn Webb

Electronic Theses and Dissertations

Current practices support the use of probiotic and prebiotic supplementation to improve chronic gastrointestinal distress (GID). The aim of this study was to determine the tolerance and benefits of GlutenShield (GS), a prebiotic, probiotic, and enzyme supplement, on adults with GID. Subjects (n=20) took either GS or the placebo for 30 days and completed a pre-treatment FFQ as well as a pre- and post-treatment GID questionnaire, blood draw, and stool sample. Participants consumed more total and saturated fat, and less fiber and whole grains compared to the recommended intake. A significant reduction in IgG2 was observed in the GS group …

Go to article

The Effects Of Two Novel Anti-Inflammatory Compounds On Prepulse Inhibition And Neural Microglia Cell Activation In A Rodent Model Of Schizophrenia, Heath W. Shelton May 2019

The Effects Of Two Novel Anti-Inflammatory Compounds On Prepulse Inhibition And Neural Microglia Cell Activation In A Rodent Model Of Schizophrenia, Heath W. Shelton

Electronic Theses and Dissertations

Recent studies have shown elevated neuroinflammation in a large subset of individuals diagnosed with schizophrenia. A pro-inflammatory cytokine, tumor necrosis factor-alpha (TNFα), has been directly linked to this neuroinflammation. This study examined the effects of two TNFα modulators (PD2024 and PD340) produced by our collaborators at P2D Bioscience, Inc., to alleviate auditory sensorimotor gating deficits and reduce microglial cell activation present in the polyinosinic:polycytidylic (Poly I:C) rodent model of schizophrenia. Auditory sensorimotor gating was assessed using prepulse inhibition and microglial activation was examined and quantified using immunohistochemistry and confocal microscopy, respectively. Both PD2024 and PD340 alleviated auditory sensorimotor gating deficits …

Go to article

Evolving Mediums: Over The Garden Wall And The Divine Comedy, Karissa Doughty May 2019

Evolving Mediums: Over The Garden Wall And The Divine Comedy, Karissa Doughty

Electronic Theses and Dissertations

Dante Alighieri’s transcendental work the Divine Comedy is masterfully appropriated in this cartoon mini-series titled Over the Garden Wall in order to explore the issue of suicidal ideation and depression while contradicting Dante. Through different textual and conceptual appropriations, the show invokes the imagery of the Divine Comedy while creating an ending that is the complete opposite of its source text, turning Dante on his head and becoming an anti-Divine Comedy. The different characters of the epic poem are reimagined for these purposes, and the result is a work of art that makes the personal into the universal.

Go to article

Validity Of Graymatters: A Self-Administered Computerized Assessment Of Alzheimer's Disease, Emily C. Hicks May 2019

Validity Of Graymatters: A Self-Administered Computerized Assessment Of Alzheimer's Disease, Emily C. Hicks

Electronic Theses and Dissertations

The need for early detection of Alzheimer’s disease has been well established in previous literature. As technology has spread across all professional fields, computerized screening instruments for the early detection of Alzheimer’s disease have begun to draw attention. Research has noted that computerized screeners of dementia should be implemented in primary care physician offices, as the majority of elderly persons see their PCP more frequently than other health professionals. Specifically, self-administered computerized screening instruments that have acceptable psychometric sturdiness are needed for these offices. GrayMatters is a self-administered computerized screening measure that has previously been shown to have acceptable reliability …

Go to article

A Photometric Study Of The Eclipsing Binary V574 Lyrae, Abigail L.J. Rickards May 2019

A Photometric Study Of The Eclipsing Binary V574 Lyrae, Abigail L.J. Rickards

Electronic Theses and Dissertations

Variable stars provide unparalleled insight into stellar evolution and eclipsing binary variables are particularly excellent laboratories for determining stellar physical parameters and behavior. These parameters, when taken with those of other stars, can be used to evaluate current theories on stellar evolution and stellar structure. With the view of contributing useful data to this cause, a photometric study of the eclipsing binary system V574 Lyrae (Lyr) was undertaken to determine the system's physical parameters and to create a model of the system. Data were collected with a 0.36 m Ritchey-Chr'etien telescope and the Sloan g', r', and i' filters and …

Go to article

First Prev Next Last