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Articles 9541 - 9570 of 35659
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A New Surgical Approach For O-C2 Fusion, Solving The Problem Of Dysphagia., M. Kathryn Mcclure
A New Surgical Approach For O-C2 Fusion, Solving The Problem Of Dysphagia., M. Kathryn Mcclure
Electronic Theses and Dissertations
The fusion of the second cervical vertebrae to the occipital bone (O-C2 fusion) for head stabilization can result in postoperative dysphagia and dyspnea, negatively impacting the patient’s quality of life. Currently, the O-C2 angle is used for head placement, which may not place the head neutrally. We hypothesize that aligning the external auditory meatus with midline of the C2 will reduce oropharyngeal stenosis, reducing dysphagia. One male patient with poor swallow quality of life who required a revision of a previous O-C2 surgery was evaluated via videofluoroscopy and completed the standard swallow quality of life questionnaire (SWAL-QOL) before and after …
Designing Interactive Virtual Environments With Feedback In Health Applications., Yi Li
Designing Interactive Virtual Environments With Feedback In Health Applications., Yi Li
Electronic Theses and Dissertations
One of the most important factors to influence user experience in human-computer interaction is the user emotional reaction. Interactive environments including serious games that are responsive to user emotions improve their effectiveness and user satisfactions. Testing and training for user emotional competence is meaningful in healthcare field, which has motivated us to analyze immersive affective games using emotional feedbacks. In this dissertation, a systematic model of designing interactive environment is presented, which consists of three essential modules: affect modeling, affect recognition, and affect control. In order to collect data for analysis and construct these modules, a series of experiments were …
"We're Asking You To Show Up" : Accountability As Rhetorical Practice For Queer, Feminist, And Racial Justice Allyship., Laura Tetreault
"We're Asking You To Show Up" : Accountability As Rhetorical Practice For Queer, Feminist, And Racial Justice Allyship., Laura Tetreault
Electronic Theses and Dissertations
In this threatening political climate, many are asking how to advocate for social justice across axes of difference, such as in coalitional movements working for queer, feminist, and racially just futures. Rhetoric and composition scholarship, especially cultural rhetorics, has long studied the activist practices of specific communities, but cross-community allyship remains undertheorized. This dissertation responds to these public and scholarly exigencies by more deeply exploring the complexities of positionality, privilege, and oppression that accompany advocacy across differences. The project explores the rhetorical dimensions of allyship in complexly networked, contemporary digital social justice messaging, focusing on centering racial justice in queer …
Swallow And Breathing Coordination Following Suprahyoid Muscle Injury., Bradley Kimbel
Swallow And Breathing Coordination Following Suprahyoid Muscle Injury., Bradley Kimbel
Electronic Theses and Dissertations
Swallowing motility disorders (dysphagia) are a major complication following radiation treatment for head and neck cancer, affecting ~50% of those treated. One reason for this is that radiation causes muscle damage, provoking sensorimotor pathologies. Previous work has suggested that injury may cause discoordination between breathing and swallowing behaviors. We sought to determine if muscle injury provokes changes in this behavior. We hypothesized that acute suprahyoid muscle damage would alter cross-behavior excitability, causing destabilization of the respiratory-swallow pattern. Swallowing was evoked in anesthetized spontaneously breathing cats via injection of a 3cc bolus of water into the oropharyngeal cavity. A suprahyoid injury …
The Effects Of A Physical Activity Program Called "Minds-In-Motion-The Maze" On Balance And Motor Skills In Middle School Aged Students., Liliana Vargas
The Effects Of A Physical Activity Program Called "Minds-In-Motion-The Maze" On Balance And Motor Skills In Middle School Aged Students., Liliana Vargas
Electronic Theses and Dissertations
Competing time demands in the curriculum have left physical education as a low priority among schools. Consequently, school aged children are not meeting the recommended 150 mins/wk of physical activity. We studied the effects of Minds in Motion-MAZE on middle school aged (n=74) children’s balance and motor skills. Minds in Motion-MAZE is a low cost physical activity program designed to improve balance and motor control. Participants participated in Minds in Motion-MAZE for 15 minutes during the 7th period. A multivariate test did not show a statistical significance of participating in Minds in Motion-MAZE and improved balance and motor skills. …
A Socioemotional Wealth Perspective On Innovativeness And Performance Of Family Businesses., Vasiliki Kosmidou
A Socioemotional Wealth Perspective On Innovativeness And Performance Of Family Businesses., Vasiliki Kosmidou
Electronic Theses and Dissertations
This dissertation is a theoretical and empirical examination of the relationships among socioemotional wealth, innovativeness, and performance in family firms. Building on the Behavioral Agency Theory’s predictions that socioemotional wealth of family firms may affect their strategic decision making both positively and negatively, this study theoretically develops and tests a research model that aims at understanding the nuanced influences of different socioemotional wealth dimensions on firm innovativeness and performance. Specifically, the study hypothesizes that a family’s socioemotional wealth affects the firm’s innovativeness and performance both negatively, in the case of internal socioemotional wealth and positively, in the case of external …
Factors Influencing The Retention Of Women Faculty In Stem Disciplines., Carrie J. Christensen
Factors Influencing The Retention Of Women Faculty In Stem Disciplines., Carrie J. Christensen
Electronic Theses and Dissertations
Low numbers of women faculty in STEM (science, technology, engineering and mathematics) disciplines continues to be a concern in higher education. Even though completion of STEM degrees by women has increased in many disciplines, increases in the number of women faculty have not been seen. Additionally, women continue to leave faculty positions at twice the rate of men. In order to remain globally competitive, the US needs to retain a diverse STEM professoriate. This dissertation examined the factors influencing the retention of women faculty in STEM disciplines and their over-representation in non-research intensive institutions. The analysis was broken into two …
Traumatic Brain Injury : Investigating Misconceptions Among Graduate Students In Physical Therapy, Occupational Therapy, And Speech-Language Pathology., Michael Frazure
Traumatic Brain Injury : Investigating Misconceptions Among Graduate Students In Physical Therapy, Occupational Therapy, And Speech-Language Pathology., Michael Frazure
Electronic Theses and Dissertations
This study utilized a convenience sample (n = 510) to investigate misconceptions of traumatic brain injury (TBI) among first and second year graduate students in physical therapy (PT), occupational therapy (OT), and speech-language pathology (SLP) training programs. Eighty-six-point-seven percent of participants were female, and 87.70% were white. All participants completed a survey comprised of items relating to general information about TBI, coma and unconsciousness, memory loss, recovery, and concussion. Descriptive and summary statistics indicated the persistence of misconceptions regarding coma and unconsciousness, memory loss, recovery, and concussion among graduate students in PT, OT, and SLP training programs. Group comparisons …
Autism Spectrum Disorder : Investigating Predictive Diagnostic Relationships In Children Three Years-Of-Age And Younger., Kaitlin Juergensen
Autism Spectrum Disorder : Investigating Predictive Diagnostic Relationships In Children Three Years-Of-Age And Younger., Kaitlin Juergensen
Electronic Theses and Dissertations
Autism spectrum disorder (ASD) is a heterogeneous neurodevelopmental disorder whose symptoms may involve deficits across three domains: communication, socialization, and atypical behaviors or interests. With a high prevalence across populations and a tendency to impact males more so than females, early and accurate diagnosis appears critical. The most current literature on ASD provides a myriad of difficulties associated with diagnosis under the age of three years. The purpose of this study was to determine if a predictive relationship exists between a child’s individual developmental domain standard deviation (SD) subscale scores (motor, language, cognitive, social-emotional, and adaptive skills) on the Bayley …
Network Science Algorithms For Mobile Networks., Heba Mohamed Elgazzar
Network Science Algorithms For Mobile Networks., Heba Mohamed Elgazzar
Electronic Theses and Dissertations
Network Science is one of the important and emerging fields in computer science and engineering that focuses on the study and analysis of different types of networks. The goal of this dissertation is to design and develop network science algorithms that can be used to study and analyze mobile networks. This can provide essential information and knowledge that can help mobile networks service providers to enhance the quality of the mobile services. We focus in this dissertation on the design and analysis of different network science techniques that can be used to analyze the dynamics of mobile networks. These techniques …
Grid-Connected Photovoltaic Systems Based On Nonlinear Control., Pablo R. Rivera
Grid-Connected Photovoltaic Systems Based On Nonlinear Control., Pablo R. Rivera
Electronic Theses and Dissertations
Nowadays, due to the high-scale penetration of photovoltaic systems, reliable and efficient grid-connected photovoltaic (PV) systems utilizing the advances of power electronics and control system technology are desirable. Thus, single-stage grid-connected photovoltaic systems, have gained attention, especially in low voltage applications. However, PV systems exhibit nonlinear behavior that could negatively affect the performance of the system if they are not adequately compensated for. In this dissertation, using the general structure for the synchronous dq0 frame, a single-stage three-phase grid-connected photovoltaic system, and a single-stage single-phase grid-connected PV system, both with a nonlinear control strategy, are developed to track the maximum …
Institutional Processes To Determine Community Engagement Impact : A Collective Case Study., Amanda Marie Bowers
Institutional Processes To Determine Community Engagement Impact : A Collective Case Study., Amanda Marie Bowers
Electronic Theses and Dissertations
This qualitative, collective case study is designed to examine the processes by which urban, metropolitan institutions determine the impact their community engagement has within the local community. The study addresses the lack of research on community engagement at the institutional level, the processes that track and coordinate engagement, as well as the perspectives of community partners in this work. Research is more developed regarding individual engagement activities and student learning outcomes than it is to institutional accountability structures or community impact. Studies that center the institution as the unit of analysis are needed to address these limitations in research and …
Gestures Of Creative Recovery For The Egocentric Actor Through Performance In Wertenbaker's Our Country's Good., Ross Joel Shenker
Gestures Of Creative Recovery For The Egocentric Actor Through Performance In Wertenbaker's Our Country's Good., Ross Joel Shenker
Electronic Theses and Dissertations
This document serves as a travelogue for the creation of two roles for the U of L Fall 2017 Production of Timberlake Wertenbaker’s Our Country’s Good. At odds throughout the process were intellect and vulnerability. In an attempt to find openness with my primary scene partner, I tried a variety of techniques including, but not limited to: Konstantin Stanislavski’s “Bits and Tasks”; Michael Chekhov’s “Psychological Gesture”; Carl Jung’s theories on Archetype; F.M. Alexander’s notions of “Inhibition” and “Nondoing” as expounded upon by Betsy Polatin; and Julia Cameron’s “Morning Pages.” My original goal of achieving vulnerability on stage became consumed …
The New Elizabethans A Novel-In-Stories With Critical Afterword Modifying Motherhood In A New Motherland : Artistic Approaches To Communicating Change In Female And National Identity During Elizabeth Ii's Reign., Sarah Ivens Moffett
Electronic Theses and Dissertations
The New Elizabethans is a literary novel-in-stories about the dramatic changes in gender and national identity witnessed by British women during Elizabeth II’s reign, a unified circle of ten finely observed stories outlining the desolation and confusion felt in this era that will be instantly, painfully evocative for anyone who has questioned who we are now – as individuals, as families, as a gender and as a nation. Told in episodic tales, jumping between eras and voices, The New Elizabethans gives witty, compact and remorseful snapshots of British life from 1953, the year of the Queen’s coronation, until today, the …
Soil Ecology Of The Exotic Dune Grass Leymus Arenarius., Matthew L. Reid
Soil Ecology Of The Exotic Dune Grass Leymus Arenarius., Matthew L. Reid
Electronic Theses and Dissertations
Exotic plants can alter the structure and function of native communities both above- and belowground, which is particularly important in primary successional sand dune ecosystems where plant-soil interactions are critical drivers of successional dynamics. In Great Lakes sand dunes, the native foundation grass Ammophila breviligulata dominates early in succession until an accumulation of detrimental soil organisms causes its die-back of the grasses. Die-back of this native foundation species can be slowed by mutualistic interactions between plants and mycorrhizal fungi. Changes to the plant community resulting from invasion, and subsequent effects on the soil community have the potential to disrupt the …
Multi Self-Adapting Particle Swarm Optimization Algorithm (Msapso)., Gerhard Koch
Multi Self-Adapting Particle Swarm Optimization Algorithm (Msapso)., Gerhard Koch
Electronic Theses and Dissertations
The performance and stability of the Particle Swarm Optimization algorithm depends on parameters that are typically tuned manually or adapted based on knowledge from empirical parameter studies. Such parameter selection is ineffectual when faced with a broad range of problem types, which often hinders the adoption of PSO to real world problems. This dissertation develops a dynamic self-optimization approach for the respective parameters (inertia weight, social and cognition). The effects of self-adaption for the optimal balance between superior performance (convergence) and the robustness (divergence) of the algorithm with regard to both simple and complex benchmark functions is investigated. This work …
An Agent Based Model To Assess Crew Temporal Variability During U.S. Navy Shipboard Operations, Kevin Muhs
An Agent Based Model To Assess Crew Temporal Variability During U.S. Navy Shipboard Operations, Kevin Muhs
Electronic Theses and Dissertations
Understanding the factors that affect human performance variability as well as their temporal impacts is an essential element in fully integrating and designing complex, adaptive environments. This understanding is particularly necessary for high stakes, time-critical routines such as those performed during nuclear reactor, air traffic control, and military operations. Over the last three decades significant efforts have emerged to demonstrate and apply a host of techniques to include Discrete Event Simulation, Bayesian Belief Networks, Neural Networks, and a multitude of existing software applications to provide relevant assessments of human task performance and temporal variability. The objective of this research was …
A Study Of Topological Invariants In The Braid Group B2, Andrew Sweeney
A Study Of Topological Invariants In The Braid Group B2, Andrew Sweeney
Electronic Theses and Dissertations
The Jones polynomial is a special topological invariant in the field of Knot Theory. Created by Vaughn Jones, in the year 1984, it is used to study when links in space are topologically different and when they are topologically equivalent. This thesis discusses the Jones polynomial in depth as well as determines a general form for the closure of any braid in the braid group B2 where the closure is a knot. This derivation is facilitated by the help of the Temperley-Lieb algebra as well as with tools from the field of Abstract Algebra. In general, the Artin braid group …
Sharing The Pain In Social Media: A Content Analysis Of #Thinspiration Images On Instagram, Agustina Amon
Sharing The Pain In Social Media: A Content Analysis Of #Thinspiration Images On Instagram, Agustina Amon
Electronic Theses and Dissertations
#Thinspiration is an online trend that depicts thin-ideal media content specifically found on the social medium Instagram. The images found under the #thinspiration intend to inspire weight loss while encouraging and/or glorifying dangerous behaviors that are usually attributed to eating disorders including anorexia nervosa (AN), bulimia nervosa (BN) and eating disorder not otherwise specified (EDNOS). This study provides a content analysis of thinspiration imagery on the popular social networking site Instagram. A set of 300 randomly selected images was coded. Images tended to objectify women and sexualize them with a focus on bony and extremely thin women. Results seemed to …
Police Perceptions On False Accusations Of Sexual Assault, Danielle Ostrander
Police Perceptions On False Accusations Of Sexual Assault, Danielle Ostrander
Electronic Theses and Dissertations
The purpose of this study was to expand current literature regarding police officers’ perceptions on false accusations of sexual assault; specifically, focusing on perceptions of the frequency of false accusations, rape myths and behavior displayed by women reporting sexual assault. Police officers’ perceptions on false accusations of sexual assault were examined by administering a 21-question survey consisting of close-ended and open-ended questions. The survey included questions about police perceptions, false accusations, rape myths, training, and behaviors of women reporting sexual assault. The sample consisted of 40 sworn law enforcement officers from different municipal police departments in Tennessee. The results showed …
Assessing The Curve Number Method For Modeling Urban Watershed Stormwater Runoff Across Louisville, Ky., Garrett J. Seay
Assessing The Curve Number Method For Modeling Urban Watershed Stormwater Runoff Across Louisville, Ky., Garrett J. Seay
Electronic Theses and Dissertations
According to the US EPA when a watershed reaches 75% impervious land cover, surface runoff accounts for 55% of precipitation input losses compared to 10% for a ‘natural cover’ watershed, exacerbating urban flooding during extreme rainfall events. This research modeled historical rainfall-runoff processes for six urban watersheds within the city of Louisville, KY for a series of these extreme rainfall events. Precipitation and resultant runoff discharge events were collected in the field over the spring and summer of 2016. Surface biophysical data in the form of gridded elevation, land cover and soil type were also collected and processed for each …
Tissue Engineered Micro And Macrovasculature Utilizing Stromal Vascular Fraction., Joseph Samir Zakhari
Tissue Engineered Micro And Macrovasculature Utilizing Stromal Vascular Fraction., Joseph Samir Zakhari
Electronic Theses and Dissertations
This dissertation describes the use of stromal vascular fraction to tissue engineer 3D microvasculature and macrovasculature. Stromal vascular fraction is an easily isolatable cell source from adipose tissue depots. It has demonstrated remarkable potential both in vitro and in vivo for forming microcirculation capable of perfusion upon implantation. SVF is clinically utilized as a therapeutic cell source for anti-inflammation for osteoarthritis and is being studied for ischemic tissue application to stimulate revascularization. The work described herein is divided within four chapters. Chapter I provides an introductory overview and lists the aims and hypothesis for the dissertation. Chapter II describes experiments …
Optimizing High-Speed Exercise Performance : Effect Of Load., Ling Bai
Optimizing High-Speed Exercise Performance : Effect Of Load., Ling Bai
Electronic Theses and Dissertations
The purpose of this study was to identify an optimal load for the knee extension exercise done with Impulse (Newnan, GA). Forty-one women and twenty-nine men made six laboratory visits, including two familiarization sessions of the knee extension exercise and four real workout sessions which entailed four 30-second exercise sets, separated by 120-second rests, against four different loads (0Kg, 3.41Kg, 5.68Kg, 7.95Kg). A Latin Squares design was used to counterbalance the sequence of the sets. Average force (AF), peak force (PF), total work (TW), Impulse value, and the number of knee extension repetitions were each analyzed with a 2 (gender) …
The Measurement Of The Adhesion Of Glaze Ice., Andrew Hardesty Work Jr.
The Measurement Of The Adhesion Of Glaze Ice., Andrew Hardesty Work Jr.
Electronic Theses and Dissertations
Icing is a lethal and costly aviation hazard affecting aircraft of all sizes ranging from small UAVs to large commercial craft such as the Boeing 787, resulting in hundreds of deaths over the last century and resulting in billions of dollars of economic impact. Three predominant types of icing, namely, airframe icing, engine icing, and rotorcraft icing, dominate aircraft icing research. Each type poses unique challenges. In the case of rotor icing, attention needs to give to the rotating environment with large oscillatory loads and icing conditions. In the case of airframe icing, special attention needs to be paid to …
Educational, Financial, And Social Needs Of Families Of Children With Multiple Disabilities In Saudi Arabia., Mohammed Abdulrahman Alkohaiz
Educational, Financial, And Social Needs Of Families Of Children With Multiple Disabilities In Saudi Arabia., Mohammed Abdulrahman Alkohaiz
Electronic Theses and Dissertations
Studies on the needs of families of children with multiple disabilities are few and limited, and none of these studies have been conducted in the Arab world, in general, nor in Saudi Arabia, in particular. Even though many families suffer from problems that affect their needs and the needs of their children with disabilities, social work research in the Arab world have not focused on the families and their needs. The information collected from such research can help in developing new and superior services to help children with multiple disabilities and their families. Thus, the present study will contribute to …
An Assessment Of The Disaster Preparedness Knowledge Of Emergency Medical Services Providers In Hajj Of 2016., Ahmed Meaiwedh Al-Otaibi
An Assessment Of The Disaster Preparedness Knowledge Of Emergency Medical Services Providers In Hajj Of 2016., Ahmed Meaiwedh Al-Otaibi
Electronic Theses and Dissertations
Objectives: 1) Assess knowledge regarding disaster preparedness for mass gathering among SRC-EMS providers during the Hajj 2016 2) Explore the relationship between the demographic variables and knowledge about disaster preparedness among SRC-EMS providers during the Hajj 2016 3) Explore the sources of knowledge for SRC-EMS providers about disaster preparedness. Method: The data collection for this study was a cross-sectional survey using an online Qualtrics survey. It was convenience sample of 1650 respondents. For the analyses descriptive statistics was used, one-way ANOVA and Bonferroni correction for multiple comparisons tests, multiple regression analyses, and Pearson’s product coefficients. Results: The main findings in …
Characterizing The Virulence Factor Yape In Yersinia Pestis., Tiva Templeton Vancleave
Characterizing The Virulence Factor Yape In Yersinia Pestis., Tiva Templeton Vancleave
Electronic Theses and Dissertations
Yersinia pestis is the causative agent of bubonic plague and is primarily transmitted by fleas. Upon infection, the bacteria rapidly travel to the regional lymph nodes causing inflammation and cellulitis in these tissues (referred to as buboes). Two outer membrane proteins, YapE and Pla, have been implicated to have roles in dissemination to the lymph nodes. Their adhesive properties have shown that they are able to interact with host macrophages thereby increasing their ability to disseminate to regional lymph nodes. More recently, we have shown that YapE is cleaved by another virulence factor important for lymph node colonization, Pla, to …
Region Based Gene Expression Via Reanalysis Of Publicly Available Microarray Data Sets., Ernur Saka
Region Based Gene Expression Via Reanalysis Of Publicly Available Microarray Data Sets., Ernur Saka
Electronic Theses and Dissertations
A DNA microarray is a high-throughput technology used to identify relative gene expression. One of the most widely used platforms is the Affymetrix® GeneChip® technology which detects gene expression levels based on probe sets composed of a set of twenty-five nucleotide probes designed to hybridize with specific gene targets. Given a particular Affymetrix® GeneChip® platform, the design of the probes is fixed. However, the method of analysis is dynamic in nature due to the ability to annotate and group probes into uniquely defined groupings. This is particularly important since publicly available repositories of microarray datasets, such as ArrayExpress and NCBI’s …
Ultrasonic Nondestructive Evaluation Of Metal Additive Manufacturing., Venkata Karthik Nadimpalli
Ultrasonic Nondestructive Evaluation Of Metal Additive Manufacturing., Venkata Karthik Nadimpalli
Electronic Theses and Dissertations
Metal Additive Manufacturing (AM) is increasingly being used to make functional components. One of the barriers for AM components to become mainstream is the difficulty to certify them. AM components can have widely different properties based on process parameters. Improving an AM processes requires an understanding of process-structure-property correlations, which can be gathered in-situ and post-process through nondestructive and destructive methods. In this study, two metal AM processes were studied, the first is Ultrasonic Additive Manufacturing (UAM) and the second is Laser Powder Bed Fusion (L-PBF). The typical problems with UAM components are inter-layer and inter-track defects. To improve the …
Effect Of Porcelain Thickness And Translucency On The Final Shade Of Ips E.Max Cad Overlaying A Dark Substrate., Peter F. Alena
Effect Of Porcelain Thickness And Translucency On The Final Shade Of Ips E.Max Cad Overlaying A Dark Substrate., Peter F. Alena
Electronic Theses and Dissertations
IPS e.max is a very esthetic lithium disilicate used in dental ceramics. Unfortunately, it can unintentionally change color after cementation with resin cements. The purpose of this study is to better understand how combining thickness and translucency affects the post-cementation shade of IPS e.max CAD overlaying a dark substrate, thereby enabling clinicians to choose more appropriate techniques and materials. IPS e.max CADs (A1 shade) had either a low translucency (LT) or high translucency (HT), and cut with 0.3mm, 0.5mm, and 1.0mm thicknesses. Each sample overlaid a resin cement and dark substrate, a spectrophotometer helped derive the color difference (ΔE*ab), and …