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Fly-In Visualization Of Tubular Objects: Theory And Application In Virtual Colonoscopy., Mostafa Mohamed Dec 2020

Fly-In Visualization Of Tubular Objects: Theory And Application In Virtual Colonoscopy., Mostafa Mohamed

Electronic Theses and Dissertations

In this dissertation, visualization for tubular objects, i.e., projecting 2D images from 3D inner surfaces of tubular objects, is investigated. Given surface points on 3D objects, an approach that most accurately and effectively projects 2D images from the 3D surface with minimal loss of information is desired. A new visualization method for tubular surfaces is proposed, denoted by "Fly-In". The approach uses a virtual camera ring that moves along the inner surface's centerline, obtaining projections of the surrounding views, forming small 3D topological rings within the tube rendered as a 2D rectangular image. A new visualization loss measure is also …


The Sick Ones., Christian Loriel Lucas Dec 2020

The Sick Ones., Christian Loriel Lucas

Electronic Theses and Dissertations

This thesis consists of a collection of linked short stories, connected at the intersections of medicine, public health, race, gender, and socioeconomics. The Sick Ones was completed during a time of social unrest and the emergence of the Covid-19 virus. Inspired by medicine’s history of exploiting sick, poor, and racialized bodies, The Sick Ones explores the treatment of illness and societal woes in a near-speculative future. Each story is plot-driven, but complimented by a protagonist who keeps the narrative grounded, as they attempt to survive unprecedented circumstances. Some of the protagonists are complicit in their own medical exploitations, while others …


The Green House Nursing Home Model: The Gh Elements And Their Impact On Quality Of Care In Nursing Homes., Deborah Kaminka Niyongabo Dec 2020

The Green House Nursing Home Model: The Gh Elements And Their Impact On Quality Of Care In Nursing Homes., Deborah Kaminka Niyongabo

Electronic Theses and Dissertations

Nursing homes (NHs) have been described as hospital-like facilities where residents are more likely to experience isolation or abuse. The Green House (GH) model is a type of culture change which focuses on deinstitutionalizing traditional NHs to provide better quality of care and quality of life to NH residents. The two main objectives of this study are: to describe the GH model and its elements and to identify which GH elements impact the quality of care. This study also seeks to identify organizational theories used in the GH analysis. The next objective is to analyze the impact of the GH …


Assaults On Law Enforcement Officers: A Spatial And Theoretical Analysis Through Social Disorganization., Brian Keith Simpkins Dec 2020

Assaults On Law Enforcement Officers: A Spatial And Theoretical Analysis Through Social Disorganization., Brian Keith Simpkins

Electronic Theses and Dissertations

The purpose of the present study was to gain a better understanding of assaults on law enforcement officers to identify correlations and spatial concentrations related to theoretical constructs of social disorganization. The present study was based on official assault on law enforcement officer data from a major metropolitan area within a southeastern state for the years 2010-2019. In addition to bivariate and multivariate statistical testing (e.g., Pearson correlation coefficient and multiple linear regression), multiple spatial analyses were utilized to understand the statistical significance, visualize results, and compare to previous theoretical explanations of crime concentration. The findings revealed that assaults on …


Mitigating Black Claustrophobia: Space, Trauma, And Healing Modalities In The Postcolonial Narrative., Saleema Mustafa Campbell Dec 2020

Mitigating Black Claustrophobia: Space, Trauma, And Healing Modalities In The Postcolonial Narrative., Saleema Mustafa Campbell

Electronic Theses and Dissertations

This dissertation examines the space or spaces of blackness and the black body in the United States. This nation was shaped by the institution of slavery, and its greatest legacy is the trauma that still resonates in social structures and spaces complicating the lived experiences of many. The various responses to these traumas are documented in literary form by authors who serve as cultural witnesses. The narratives featured in this research project, collectively and individually, offer a voice to the traumatic plight of individuals in the U.S. who struggle to contemplate and rectify the traumas of this nation’s past. This …


Modified-Half-Normal Distribution And Different Methods To Estimate Average Treatment Effect., Jingchao Sun Dec 2020

Modified-Half-Normal Distribution And Different Methods To Estimate Average Treatment Effect., Jingchao Sun

Electronic Theses and Dissertations

This dissertation consists of three projects related to Modified-Half-Normal distribution and causal inference. In my first project, a new distribution called Modified-Half-Normal distribution was introduced. I explored a few of its distributional properties, the procedures for generating random samples based on Bayesian approaches, and the parameter estimation based on the method of moments. The second project deals with the problem of selection bias of average treatment effect (ATE) if we use the observational data. I combined the propensity score based inverse probability of treatment weighting (IPTW) method and the directed acyclic graph (DAG) to solve this problem. The third project …


Statistical Approaches Of Gene Set Analysis With Quantitative Trait Loci For High-Throughput Genomic Studies., Samarendra Das Dec 2020

Statistical Approaches Of Gene Set Analysis With Quantitative Trait Loci For High-Throughput Genomic Studies., Samarendra Das

Electronic Theses and Dissertations

Recently, gene set analysis has become the first choice for gaining insights into the underlying complex biology of diseases through high-throughput genomic studies, such as Microarrays, bulk RNA-Sequencing, single cell RNA-Sequencing, etc. It also reduces the complexity of statistical analysis and enhances the explanatory power of the obtained results. Further, the statistical structure and steps common to these approaches have not yet been comprehensively discussed, which limits their utility. Hence, a comprehensive overview of the available gene set analysis approaches used for different high-throughput genomic studies is provided. The analysis of gene sets is usually carried out based on …


The Ball Is In Your Court: A Phenomenological Study Examining College Athletes With Learning Disabilities And/Or Adhd On College Campuses., Stephanie Thea O'Donnell Dec 2020

The Ball Is In Your Court: A Phenomenological Study Examining College Athletes With Learning Disabilities And/Or Adhd On College Campuses., Stephanie Thea O'Donnell

Electronic Theses and Dissertations

Approximately only 1% of scholarly top-tier higher education published research focuses on the experiences of students with disabilities since the passing of the ADA in 1990 (Pena, 2014). Even fewer studies have explored the learning-disabled collegiate athlete experience. The purpose of this emerging phenomenological study is to understand the lived experiences of college athletes with learning disabilities and/or ADHD at NCAA Division 1 FBS institutions, giving voice to the untold stories, and commonalities amongst this population. This study provides findings grounded in student perspective by examining their experiences related to disability disclosure, self-advocacy, and academic support within the college environment. …


Evaluating The Effects Of Pcbs In Non-Alcoholic Fatty Liver Disease & Diabetes And The Role Of Ahr In Regulating The Hepatic Proteome And Lipid Metabolism., Jian Jin Dec 2020

Evaluating The Effects Of Pcbs In Non-Alcoholic Fatty Liver Disease & Diabetes And The Role Of Ahr In Regulating The Hepatic Proteome And Lipid Metabolism., Jian Jin

Electronic Theses and Dissertations

Polychlorinated biphenyls (PCBs) are persistent organic pollutants associated with non-alcoholic fatty liver disease (NAFLD) and diabetes. Based on their ability to activate the aryl hydrocarbon receptor (AhR), PCBs are subdivided into two classes: dioxin-like (DL) and non- dioxin-like (NDL) PCBs. This study not only evaluated the chronic effect of DL PCBs (PCB126), NDL PCBs (Aroclor1260 mainly contains NDL), and the DL/NDL PCB mixture (PCB126/Aroclor1260 mixture) on liver, but also explored the acute hepatic effects of DL PCB and potential mechanisms in NAFLD and the role of AhR in regulating hepatic proteome and lipid metabolism, and whether the process independent of …


Kindergarten Readiness And Grade 1 Mathematics Achievement., Faneshia Mcpherson Jones Dec 2020

Kindergarten Readiness And Grade 1 Mathematics Achievement., Faneshia Mcpherson Jones

Electronic Theses and Dissertations

From 2013-2019, all Kentucky school districts have administered a common screener to each student entering kindergarten. In this study, kindergarten readiness—determined by academic skills/cognitive development, language development, and physical development—was a significant predictor of grade 1 end-of-year mathematics achievement. The model predictions show that kindergarten students who met the readiness benchmark had higher grade 1 end-of-year mathematics scores compared to students who entered kindergarten below the readiness benchmark. The model predictions improved substantially with the inclusion of prior level of achievement as indicated by grade 1 beginning of the year mathematics achievement. However, students with stronger readiness skills demonstrated significantly …


Modeling And Analysis For Unit Cell Size, Material Anisotropy And Material Imperfection Effects Of Cellular Structures Fabricated By Powder Bed Fusion Additive Manufacturing., Yan Wu Dec 2020

Modeling And Analysis For Unit Cell Size, Material Anisotropy And Material Imperfection Effects Of Cellular Structures Fabricated By Powder Bed Fusion Additive Manufacturing., Yan Wu

Electronic Theses and Dissertations

Cellular structures are networks of interconnected struts or walls with porosities and are widely found in many natural load-bearing structures such as plants and bones. Cellular structures offer unique functional characteristics such as high stiffness to weight ratio, tailorable heat transfer coefficient, and enhanced mechanical energy absorption, which makes them highly attractive in various engineering disciplines such as biomedical implants, electrodes, heat exchangers, and lightweight structures. There exists an abundance of literatures that have investigated various mechanical properties of various cellular structures such as Poisson’s ratio, elastic modulus, ultimate strength, yield strength, and failure characteristics. Based on the classic cellular …


Structural Characterization And Selective Drug Targeting Of Higher-Order Dna G-Quadruplex Systems., Robert Chandos Monsen Dec 2020

Structural Characterization And Selective Drug Targeting Of Higher-Order Dna G-Quadruplex Systems., Robert Chandos Monsen

Electronic Theses and Dissertations

There is now substantial evidence that guanine-rich regions of DNA form non-B DNA structures known as G-quadruplexes in cells. G-quadruplexes (G4s) are tetraplex DNA structures that form amid four runs of guanines which are stabilized via Hoogsteen hydrogen bonding to form stacked tetrads. DNA G4s have roles in key genomic functions such as regulating gene expression, replication, and telomere homeostasis. Because of their apparent role in disease, G4s are now viewed as important molecular targets for anticancer therapeutics. To date, the structures of many important G4 systems have been solved by NMR or X-ray crystallographic techniques. Small molecules developed to …


Social Media And Fear: Social Media As A Catalyst For Political Fear In The United States., Shane R. White Dec 2020

Social Media And Fear: Social Media As A Catalyst For Political Fear In The United States., Shane R. White

Electronic Theses and Dissertations

Abstract: Using the American National Election Study data from the 2012 and 2016 surveys I explore how social media usage shapes fear. This is likely caused by the nature of social media leading to oversharing of sensationalized articles likely to elicit an emotional and fearful response. My findings suggest first that social media usage has a statistically significant effect on whether they would say they are afraid of a candidate (2012) and how afraid they say they are of the candidates (2016). Second, social media has little effect on economic fear, and may actually make people more hopeful about the …


Inclusion Of Classified Staff In The Implementation Of Positive Behavior Interventions And Supports: A District Case Study., Devon M. Roberts Dec 2020

Inclusion Of Classified Staff In The Implementation Of Positive Behavior Interventions And Supports: A District Case Study., Devon M. Roberts

Electronic Theses and Dissertations

This qualitative case study examined the current use of Positive Behavior Interventions and Supports (PBIS) within a large school district and how that district includes classified staff within the implementation process. This study utilized information from interviews and focus groups of district leaders, school leaders, and classified staff to evaluate their perspectives on the daily use of PBIS, specifically how classified staff are included in all aspects of the initiative. Using the Normalization Process Theory (NPT) as a theoretical framework, this study sought to make sense of how complex organizational initiatives are intertwined and become embedded into the normal practices …


Development Of A Pediatric Cardiac Assist Maglev Pump For Use With A Universal Driver System., Landon Heath Tompkins Dec 2020

Development Of A Pediatric Cardiac Assist Maglev Pump For Use With A Universal Driver System., Landon Heath Tompkins

Electronic Theses and Dissertations

Heart failure (HF) remains the leading cause of death, affecting 26 million adults worldwide and 6.5 million adults in the United States. Pediatric HF patients have been a historically underserved population with few options for mechanical circulatory support (MCS) therapy, a leading treatment as an alternative to heart transplantation. To address this clinical need, the Inspired Universal MagLev System is being developed; a low cost, universal magnetically levitated extracorporeal MCS system with interchangeable single-use pumps that will ultimately provide adult and pediatric patients ventricular and respiratory assist therapies. The Inspired Pediatric VAD is the first single-use pump application for this …


The Effects Of Whole Life, Low Dose Cadmium Exposure On High Fat Diet-Induced Nonalcoholic Fatty Liver Disease And The Role Of Zinc., Jamie Lynn Young Dec 2020

The Effects Of Whole Life, Low Dose Cadmium Exposure On High Fat Diet-Induced Nonalcoholic Fatty Liver Disease And The Role Of Zinc., Jamie Lynn Young

Electronic Theses and Dissertations

Nonalcoholic fatty liver disease (NAFLD) is a major global public health concern affecting more than 25% of the world’s population. Although obesity is a major risk factor for NAFLD, it cannot account for many cases, indicating the importance of other factors such as sex and environmental exposures. Cadmium exposure is implicated in the development of NAFLD; however, the influence of early-life, in utero cadmium exposure on the development of diet-induced NAFLD is poorly understood. Therefore, we developed an in vivo, multiple-hit model to study the effect of whole-life, low-dose cadmium exposure on high fat diet (HFD)-induced NAFLD. Additionally, we …


On The Straight And Narrow: How Cultural Beliefs About Sex/Gender Manifest In College Biology Learning Environments., Katherine Ray Kng Dec 2020

On The Straight And Narrow: How Cultural Beliefs About Sex/Gender Manifest In College Biology Learning Environments., Katherine Ray Kng

Electronic Theses and Dissertations

This dissertation focused on the ways that social beliefs about sex/gender and sexuality manifest in biology classrooms. Especially for health science students, classes include topics like sex, sexuality, sexual behaviors, or sex determination that forms the foundation of their understanding of human forms and behaviors. If the information they receive does not include the LGBTQIA+ community, their education will fail to adequately prepare them for the reality of healthcare practice where they will be expected to treat all patients with dignity and respect. There are three chapters in this dissertation. In chapter one, I asked what beliefs about and conceptions …


Development And Applications Of Condensed Phase Cavity Ring-Down Spectroscopy For Studies Of Electrochemical And Interfacial., Shadi Ahmad Alnaanah Dec 2020

Development And Applications Of Condensed Phase Cavity Ring-Down Spectroscopy For Studies Of Electrochemical And Interfacial., Shadi Ahmad Alnaanah

Electronic Theses and Dissertations

This dissertation reports the development of ultra-sensitive platforms based on the laser cavity ring-down spectroscopic (CRDS) technique to enable optical and spectroelectrochemical investigations in the condensed phase of matter at challenging scenarios. Firstly, an electrically-active solid/liquid interface for the evanescent-wave cavity ring-down spectroscopy (EW-CRDS) was developed to specroelectrochemically investigate redox events. By coating the interface of total internal reflection of the EW-CRDS platform with a high quality optically transparent and electrically conductive indium tin oxide thin film (ITO), we demonstrated that sufficiently long ring-down times can be achieved to allow for spectroelectrochemical investigations of redox species at solid/liquid interfaces at …


Aspects Of Causal Inference., John A. Craycroft Dec 2020

Aspects Of Causal Inference., John A. Craycroft

Electronic Theses and Dissertations

Observational studies differ from experimental studies in that assignment of subjects to treatments is not randomized but rather occurs due to natural mechanisms, which are usually hidden from researchers. Yet objectives of the two studies are frequently the same: identify the causal – rather than merely associational – relationship between some treatment or exposure and an outcome. The statistical issues that arise in properly analyzing observational data for this goal are numerous and fascinating, and these issues are encompassed in the domain of causal inference. The research presented in this dissertation explores several distinct aspects of causal inference. This dissertation …


Hydration, Shrinkage, Cracking, And Mechanical Properties Of Cementitious Materials With Lignocellulosic Biomass Wastes., Aofei Guo Dec 2020

Hydration, Shrinkage, Cracking, And Mechanical Properties Of Cementitious Materials With Lignocellulosic Biomass Wastes., Aofei Guo

Electronic Theses and Dissertations

The disposal of lignocellulosic biomass wastes imposes a huge economic and environmental burden on this society. Recycling lignocellulosic biomass wastes and applying them to cementitious materials provides a sustainable and value-added way for both agriculture and concrete industries. To comprehensively identify the effect of lignocellulosic biomass wastes at different scales on cementitious materials, the hydration, shrinkage, cracking, and mechanical properties of cementitious materials with lignocellulosic biomass wastes were studied. Given the three different forms (powders, chips, and fibers) of lignocellulosic biomass wastes in this study, the research was implemented in three stages. In the first stage, hemp powders were collected …


The Corporate Venture Dyad: A Study Of The Impact Of Cultural Distance On Venture Performance., Tommie R. Welcher Dec 2020

The Corporate Venture Dyad: A Study Of The Impact Of Cultural Distance On Venture Performance., Tommie R. Welcher

Electronic Theses and Dissertations

Even though corporate ventures (CVs) provide many benefits to established corporations, they continue to fail at a high rate. Whereas research supports that a corporation can gain a parenting advantage over its competitors (Campbell et al., 1995), there is no evidence to support that starting more CVs leads to more successful CVs. Parenting advantage theory postulates that if a corporation with a parenting advantage starts a venture then that venture will be more successful than if any of their competitors had started the same venture (Campbell et al., 1995). CVs are typified by dynamism and innovation, but established corporations have …


Analyzing Human Resource Competency Development Through The Lens Of Adult Learning Theory: A Qualitative Case Study On Change Management Competency In A Global U.S.-Based Firm., Angela K. Jorgensen Dec 2020

Analyzing Human Resource Competency Development Through The Lens Of Adult Learning Theory: A Qualitative Case Study On Change Management Competency In A Global U.S.-Based Firm., Angela K. Jorgensen

Electronic Theses and Dissertations

HR as a profession has sought to be more strategic in order to address the increasing complexities of the business world, but many find that, in general, it is not happening in practice. Academic research has sought to define a set of competencies to guide the work and development of HR professionals; specifically, managing organizational change is one of the recommended core competencies. The extant literature suggests that there is a gap in the formal learning higher education offerings for HR professionals to be able to develop the set of knowledge, skills, and abilities required to be proficient in organizational …


Student Perceptions Of Personalized Learning In A Rural School District., Kathryn M. House Dec 2020

Student Perceptions Of Personalized Learning In A Rural School District., Kathryn M. House

Electronic Theses and Dissertations

This case study explored student perceptions of the implementation of personalized learning as a means of supporting student engagement and improved student outcomes. A review of research revealed a mismatch between the current instructional pedagogy utilized and the needs identified by the workforce. The world has evolved rapidly while education has slowly evolved, creating an ever-increasing relevance gap for students. We have transitioned to a global society and innovations in technology have led the way. Today’s workforce requires students to have soft skills and competencies to be able to think critically, problem solve, develop resiliency, be innovative and creative, communicate …


In Need Of A Hero? The Creation And Use Of The Legend Of General George S. Patton, Jr., Nathan Curtis Jones Dec 2020

In Need Of A Hero? The Creation And Use Of The Legend Of General George S. Patton, Jr., Nathan Curtis Jones

Electronic Theses and Dissertations

During WWII, General George Patton became the hero Americans needed through the creation of a self-crafted brand and with help from journalists. After Patton’s death, opportunists forwarded a legend narrative that developed into a collective memory that morphed over time to meet contemporary challenges. Stakeholders of that collective memory commemorated and memorialized the dead hero for monetary and political gain, to promote patriotism, make military doctrinal changes, and even promote peace. Today, this collective memory has potential for the U.S. Army as it transforms civilians into soldiers and officers. This study contributes to history and memory studies by linking representations …


Job Satisfaction For Individuals With Disabilities: Youth One Year Out., Katherine Michelle Cooper Phd Dec 2020

Job Satisfaction For Individuals With Disabilities: Youth One Year Out., Katherine Michelle Cooper Phd

Electronic Theses and Dissertations

Even though there have been decades of research, practice, and legislative efforts in the field of secondary transition, it is believed that students with disabilities are still less likely to enroll in postsecondary education or training, secure competitive employment, and live independently than their nondisabled peers. One of the reasons for this might be the lack of understanding students’ perceptions of employment opportunities. Much of the early vocational legislation focused on the needs of adult workers injured during a war or in civil employment. The last iteration of the Rehabilitation Act in the 1990s described disabilities, even the most significant …


Capacity Building: A Study Of Career Academies And Student Career Self-Efficacy., Shawn Timothy Hinds Jr Dec 2020

Capacity Building: A Study Of Career Academies And Student Career Self-Efficacy., Shawn Timothy Hinds Jr

Electronic Theses and Dissertations

The phrase “College and Career Readiness” echoes throughout the halls of schools and districts across the United States. Politicians pass legislation aimed at ensuring the readiness of every student graduating from high school. Despite these efforts, the United States is falling further behind in a global race for economic wellbeing and academic preparedness based on one of the most respected global measures of student achievement, the Programme for International Student Assessment (Murphy & Adams, 1998; Tucker, 2016). Even as the social fabric of the country changes and the number of Students of Color and students in poverty increase, there have …


Development Of Core Pharmacy Roles With Competency/Epa Alignment And Levels Of Entrustment., Kimberly K. Daugherty Dec 2020

Development Of Core Pharmacy Roles With Competency/Epa Alignment And Levels Of Entrustment., Kimberly K. Daugherty

Electronic Theses and Dissertations

The purpose of this two-phase embedded mixed-method project was to investigate the extent to which a consensus exists among pharmacy professionals regarding core practice-ready roles for graduates that align with current pharmacy competencies/EPA statements with entrustment levels. Current competencies/EPAs were perceived as mapping to the core roles developed during this study, with some missing competencies. Some of the EPA levels of entrustment varied depending on the role to which it was mapped. Some levels were different than the current recommended EPA entrustment level recommended to be used by schools/colleges. The development of a set of core roles with the mapping …


Predicting Dental Student's Performance On National Board Dental Examination (Nbde) Part I: Exploring Demographic Factors, Dental Admission Test (Dat) Factors, Pre-Program Academic Factors, And Dental Program Academic Performance., Wei-Shao Lin Dec 2020

Predicting Dental Student's Performance On National Board Dental Examination (Nbde) Part I: Exploring Demographic Factors, Dental Admission Test (Dat) Factors, Pre-Program Academic Factors, And Dental Program Academic Performance., Wei-Shao Lin

Electronic Theses and Dissertations

Dental students need to successfully challenge a national licensure examination to be able to practice dentistry. Dental educators currently have difficulty in identifying candidates who are at risk of failing this examination. This non-experimental quantitative study examined existing dental student data from the 2017, 2018, and 2019 graduating classes, using a retrospective and correlational approach to identify possible markers for at risk students. Demographic factors, dental admission test (DAT) factors, pre-program academic factors, dental program academic performance, and National Board Dental Examination (NBDE) Part I performance. A series of independent t-tests and One-Way analysis of variances (ANOVAs) were used to …


External Homophobia And Outness In Gay Men., Thomas Charles Isaak Jr Dec 2020

External Homophobia And Outness In Gay Men., Thomas Charles Isaak Jr

Electronic Theses and Dissertations

Prior studies regarding outness among gay men have often focused on internalized homophobia as a barrier to coming out for gay men, while less emphasis has been placed on external homophobia. Drawing upon social construction theory and Connell’s hierarchy of masculinity, I utilize data from the 2010 Social Justice Sexuality Project to complete an ordinary least square regression to examine the impact of external homophobia on the level of outness among the 987 gay men in this study. In this study, I find that gay men who were exposed to external homophobia reported decreased levels of outness. Further, I find …


The Defeathered Bird: A Case Study Of The Boeing 737 Max Crisis, Ernest Eshun Dec 2020

The Defeathered Bird: A Case Study Of The Boeing 737 Max Crisis, Ernest Eshun

Electronic Theses and Dissertations

On April 10, 2019, a global crisis began outside Ethiopia’s capital, Addis Ababa. A Boeing 737 Max 8 airplane owned and operated by Ethiopian Airline crashed in the desert killing all on board. The accident mimicked a six months old Lion Air flight 610 which happened in Indonesia and claimed the lives of all crew and passengers. Together, these accidents claimed the lives of 346 people and have been noted as one of the dark days in modern aviation history. Subsequently, the aviation world grounded all Boeing 737 Max aircrafts amid safety concerns. This brought severe public criticism to Boeing, …