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Structural, Vibrational And Transport Properties Of Novel Complex Systems., Bhupendra Man Shing Karki
Structural, Vibrational And Transport Properties Of Novel Complex Systems., Bhupendra Man Shing Karki
Electronic Theses and Dissertations
Electron correlation effects in quantum materials are very strong. It is critical to investigate the structure of quantum materials to better understand and manipulate their physical properties. Quantum effects are prominent at the atomic microscopic length scale, which can not be examined by average long range structural measurements using traditional diffraction methods. Instead, pair distribution function (PDF) analysis, a local structure probe, can effectively unveil the mystery of local structure, which is more sensitive to local behavior than bulk average features. The first section of my dissertation will concentrate on the local structural study of the Iron oxy-chalcogenides, {\cSSe}, which …
Imagination In Practice: Writing Studies And The Application Of Hospitality., Edward Alan English
Imagination In Practice: Writing Studies And The Application Of Hospitality., Edward Alan English
Electronic Theses and Dissertations
The question of how to ethically teach, learn, and engage in an evolving world remains one of the most longstanding investigations in writing studies scholarship. Examining some of the most foundational frameworks for writing pedagogy reveals that their underlying motivations share common concerns for how to learn from and empower students. This dissertation builds from this trend and foregrounds the observations, stories, and experiences of consultants and writers at the University of Louisville’s Writing Center through a qualitative study that is informed by case study methodology and collaborative action research. I draw on primary data collected from one focus group …
The Space Between: Listening Within Difference In Writing Center Consultations., Jessica S. B. Newman
The Space Between: Listening Within Difference In Writing Center Consultations., Jessica S. B. Newman
Electronic Theses and Dissertations
Writing center consultations are built of writer and consultant relationships and differences. Listening is a stance that facilitates navigation of these differences, yet it has long been undervalued. I investigated the roles of listening in writing center consultations, exploring the perspectives of writer and consultant participants. For this mixed methods case study, I collected observations, surveys, interviews, and asynchronous responses to follow-up questions. I also synthesized three listening theories that attend to relations between self and other: dialogic listening, rhetorical listening, and listening otherwise. Listening’s connections with openness, understanding, and power have many implications for the writing center. Listening involves …
Development And Validation Of Biosafety Climate Scale And Survey-Based Analyses Of Safety Perceptions In Biological Research And Teaching Laboratories At Public Universities In The Usa., Sivarchana Mareedu
Electronic Theses and Dissertations
Biosafety plays a key role in ensuring safety of researchers’ as well as the public from unintentional exposures to infectious agents. However, the occurrence of lab acquired infections, exposures, and safety lapses in biological laboratories underscores challenges in biosafety program management. The raise in emerging and reemerging infectious diseases and the ongoing COVID-19 pandemic reiterates the need for biosafety and research community to work together. Literature recommends the application of safety climate in measuring safety culture. The goal of this dissertation is to quantify biosafety climate and examine associated factors to understand the gaps between research and biosafety professionals in …
Intercalation And High Pressure Studies Of Black Phosphorous - Pathways To Novel Materials And Physics., Manthila Chathurange Rajapakse
Intercalation And High Pressure Studies Of Black Phosphorous - Pathways To Novel Materials And Physics., Manthila Chathurange Rajapakse
Electronic Theses and Dissertations
Discovery of graphene in 2004 initiated a new trend of materials known as two-dimensional (2D) materials which have exciting surface properties and anisotropies than their bulk counterparts. Phosphorene, which is the layered version of black phosphorous (BP) is one of the top 2D materials in terms of research interests and applications of the present day. Moving a step further, our interest is to understand the possibilities for structural modifications of phosphorene, by means of stimuli such as intercalation and high-pressure. It has been predicted by theoretical studies that these stimuli may lead to the formation of new structures and phases …
The Impact Of Criminal Justice Involvement: Examining Experiences In A Housing First Program., Amanda N. Denton
The Impact Of Criminal Justice Involvement: Examining Experiences In A Housing First Program., Amanda N. Denton
Electronic Theses and Dissertations
Individuals who come into contact with the criminal justice system are more likely to experience housing instability and homelessness, which, in turn, increases the likelihood of subsequent criminal justice involvement. Due to a lack of federal funding, as well as disjointed and inconsistent policies regarding eligibility criteria, people with criminal records are unlikely to receive federal rental assistance. While the exclusion of people with criminal histories is presented as necessary to protect communities and residents from crime, improving access to stable housing may reduce recidivism, incarceration rates, and correctional costs and increase public safety. The present study examined the differences …
Signal Fingerprinting And Machine Learning Framework For Uav Detection And Identification., Olusiji Oloruntobi Medaiyese
Signal Fingerprinting And Machine Learning Framework For Uav Detection And Identification., Olusiji Oloruntobi Medaiyese
Electronic Theses and Dissertations
Advancement in technology has led to creative and innovative inventions. One such invention includes unmanned aerial vehicles (UAVs). UAVs (also known as drones) are now an intrinsic part of our society because their application is becoming ubiquitous in every industry ranging from transportation and logistics to environmental monitoring among others. With the numerous benign applications of UAVs, their emergence has added a new dimension to privacy and security issues. There are little or no strict regulations on the people that can purchase or own a UAV. For this reason, nefarious actors can take advantage of these aircraft to intrude into …
Engineering Performance And Teamwork Perceptions Shaped By Structured Learning Experiences In A Makerspace., Teresa Lee Tinnell
Engineering Performance And Teamwork Perceptions Shaped By Structured Learning Experiences In A Makerspace., Teresa Lee Tinnell
Electronic Theses and Dissertations
The ability to work on teams is of critical importance to the field of engineering and a critical competency for future engineers. Fostering performance of effective teamwork through the education of engineers emphasizes the humanistic dimension of the engineering profession and engages future engineering professionals in complex and dynamic team experiences. Team performance and effectiveness of student teams is strongly influenced by individual student perceptions of teamwork as a learning mechanism for successful collective learning experiences. Initial perceptions of teamwork among first year engineering students are often negative due to prior adverse or unproductive team performance. Makerspace learning environments are …
Typological And Technological Analyses Of Multi-Component Lithic Collection From Eastern Kentucky., Isaac C. Garvin
Typological And Technological Analyses Of Multi-Component Lithic Collection From Eastern Kentucky., Isaac C. Garvin
Electronic Theses and Dissertations
The purpose of this thesis was to perform a typological and technological analysis of the Gibson Collection utilizing statistical analyses and carefully recorded metric data. The Gibson Collection consists of N=472 lithic artifacts from the southern tip of Fleming County in eastern Kentucky, located directly above the Cave Run Reservoir. The main research focus of this project was to assign types to previously unrecorded artifacts with the intention of observing diachronic technological change of eastern Kentucky’s archaeological timeline within the Gibson collection. This thesis uses post-processual archaeological ideology and inquiry as well as statistical analyses and interpretation. Further, through the …
Gis Predictive Modelling In The Daniel Boone National Forest: Settlement Patterns During The Intensification Or Horticulture., Jacob Max Ray
Gis Predictive Modelling In The Daniel Boone National Forest: Settlement Patterns During The Intensification Or Horticulture., Jacob Max Ray
Electronic Theses and Dissertations
In this study, I explore the Late Archaic and Woodland settlement patterns (3,000 BC – 1,000 AD) in the Daniel Boone National Forest, Kentucky, and surrounding region within the context of the intensification of horticulture. GIS predictive modelling via automated learning algorithms are employed to explore various environmental variables that may have influenced where and why horticultural intensification occurred. Predictive models using random forest and maximum entropy are created and compared for the Late Archaic and Woodland periods. Results show only minimal variance between the Late Archaic and Woodland settlement patterns within the study area with slope and elevation identified …
Rapid Annealing Of Perovskite Solar Cell Thin Film Materials Through Intense Pulse Light., Amir Hossein Ghahremani
Rapid Annealing Of Perovskite Solar Cell Thin Film Materials Through Intense Pulse Light., Amir Hossein Ghahremani
Electronic Theses and Dissertations
Perovskite solar cells (PSCs) have garnered a great attention due to their rapid efficiency improvement using cheap and solution processable materials that can be adapted for scalable high-speed automated manufacturing. Thin film perovskite photovoltaics (PVs) are typically fabricated in an inert environment, such as nitrogen glovebox, through a set of deposition and annealing steps, each playing a significant role on the power conversion efficiency (PCE), reproducibility, and stability of devices. However, atmospheric processing of PSCs would achieve lucrative commercialization. Therefore, it is necessary to utilize materials and methods that enable successful fabrication of efficient PSCs in the ambient environment. The …
Concurrent Reporting Of Adverse Childhood Experiences Among Perspectives Of Adolescents And Caregivers., Katie J. Berghuis
Concurrent Reporting Of Adverse Childhood Experiences Among Perspectives Of Adolescents And Caregivers., Katie J. Berghuis
Electronic Theses and Dissertations
The consequences of Adverse Childhood Experience (ACE) events in youth have predominantly been studied through retrospective studies that assess adults’ first 18 years of life or caregiver report of ACEs in youth. Reliance on only caregiver report to discern ACEs is a limitation amongst prior studies as research has found that caregivers tend to underestimate ACEs among their children, and there is even a greater discrepancy of reporting between caregivers and youth 12 years and older. Therefore, this study investigated concurrent reporting of self-report ACE scores in adolescents – defined in this study as 12 to 20 years old – …
A Qualitative Study Of 129 Police Lethal Force Incidents In 2016 Examining Participant Behavior Relating To Mental Illness That Contributes To The Use Of Lethal Force., Edward H. Byers
Electronic Theses and Dissertations
This multi-case, exploratory research study examined videos and related news media articles of lethal police shootings and found commonalities and possible contributing factors. Videos and informational articles posted on news media websites in the public domain were used in a qualitative content analysis to identify common elements in police lethal force incidents. The results of this study revealed contributing behaviors by the participants related to mental illness that contribute to lethal force. The decision to use lethal force by a police officer is framed using four analytical themes.
Metabolic-Epigenetic Regulation Of Macrophage Polarization., Jordan T. Noe
Metabolic-Epigenetic Regulation Of Macrophage Polarization., Jordan T. Noe
Electronic Theses and Dissertations
Tumor-associated macrophages polarized to an M2 phenotype (M2-TAMs) promote neo-angiogenesis, tumor-stromal matrix remodeling, and immuno-evasion, which, collectively, contribute to immunotherapeutic resistance and reduced cancer patient survival. Highly glycolytic “Warburg” cancer cells produce lactate that independently drives naïve M0→immunosuppressive M2 (M0→M2) macrophage polarization, but the mechanisms have not been fully elucidated. The atypical cytokine macrophage migration inhibitory factor (MIF) is a fundamental underlying requirement for immunosuppressive M2 macrophage polarization. Still, it is unknown whether a molecular link exists between lactate-supported and MIF-dependent M2 macrophage polarization. Using a combination of gene expression assays, chromatin immunoprecipitation, and metabolomic analyses, we identified that M2 …
Academy Student Ambassador Perceptions Of The Academy Model: The Successes And Areas For Growth., James Edward Mcmillin
Academy Student Ambassador Perceptions Of The Academy Model: The Successes And Areas For Growth., James Edward Mcmillin
Electronic Theses and Dissertations
When students see the relevance of their education, whether college-bound or career-bound, it can motivate them to seek out courses and experiences that will prepare them for life after high school (Plank, DeLuca, & Estacion, 2005). The experiences, accomplishments, and social influences a student has throughout their time in school creates meaning and helps inform how they identify career interests and make career choices (Lent, Brown, & Hackett, 1994). This is especially true in high school where students begin to develop an awareness of their career interests and start thinking about their life after high school (Erikson, 1963). As the …
Implicit Theories As A Moderator Between Religious Commitment And Forgiveness Among Muslims Experiencing A Religious Identity Offense., John Michael Hart Ii
Implicit Theories As A Moderator Between Religious Commitment And Forgiveness Among Muslims Experiencing A Religious Identity Offense., John Michael Hart Ii
Electronic Theses and Dissertations
A recurrent finding in the literature on the relationship between religion and forgiveness is that religious people tend to describe themselves as forgiving while reporting less forgiveness in response to actual offenses (Davis, Worthington, Hook, & Hill, 2013; McCullough & Worthington, 1999). Scholars have suggested moderating factors may explain this discrepancy (Worthington et al., 2010), though the existing literature has been criticized as limited because much of the research is based on Christian samples (Carlisle & Tsang, 2013; Davis et al., 2013). Implicit theories, which have previously been found to be associated with forgiveness and theorized to be related to …
A Comparative Study Of The Organizational Culture Of A South Korean And Us High School Athletic Department., Youngjik Lee
A Comparative Study Of The Organizational Culture Of A South Korean And Us High School Athletic Department., Youngjik Lee
Electronic Theses and Dissertations
In South Korea, many high school athletics practitioners are interested in adapting US high school athletics policies to South Korean high school athletics. However, due to the cultural differences in the overall systems and environments of high school athletics in each country, directly applying US high school athletic policies does not always fit in South Korea. The purpose of this study was to examine and compare the perceptions of principals and athletic directors of the organizational cultures of a high school athletic department in South Korea and in the USA. Also, this study examined the effect of the organizational culture …
Mass Spectrometry Based Metabolomics And Lipidomics., Fang Yuan
Mass Spectrometry Based Metabolomics And Lipidomics., Fang Yuan
Electronic Theses and Dissertations
Metabolomics and lipidomics studies are important to understand living organisms at the molecular level. In this dissertation, I conducted various untargeted and targeted metabolomics and lipidomics studies using mass spectrometry based analytical platforms. Firstly, I investigated the androgen depletion effects on fecal metabolites in a mouse model of systemic lupus erythematosus and metabolite biomarkers for colorectal cancer using two-dimensional gas and liquid chromatography-mass spectrometry. Secondly, I investigated the relationship between gut microbiota-mediated resistance and susceptibility to malaria and the production of short-chain fatty acids using gas chromatography-mass spectrometry. Thirdly, I developed a high-throughput liquid chromatography-mass spectrometry method to profile long-chain …
Bayesian Variable Selection Strategies In Longitudinal Mixture Models And Categorical Regression Problems., Md Nazir Uddin
Bayesian Variable Selection Strategies In Longitudinal Mixture Models And Categorical Regression Problems., Md Nazir Uddin
Electronic Theses and Dissertations
In this work, we seek to develop a variable screening and selection method for Bayesian mixture models with longitudinal data. To develop this method, we consider data from the Health and Retirement Survey (HRS) conducted by University of Michigan. Considering yearly out-of-pocket expenditures as the longitudinal response variable, we consider a Bayesian mixture model with $K$ components. The data consist of a large collection of demographic, financial, and health-related baseline characteristics, and we wish to find a subset of these that impact cluster membership. An initial mixture model without any cluster-level predictors is fit to the data through an MCMC …
A Study Of Arab And South Asian American Men With Immigrant-Family Origins In New-Immigrant Destinations., Jack Trey Allen
A Study Of Arab And South Asian American Men With Immigrant-Family Origins In New-Immigrant Destinations., Jack Trey Allen
Electronic Theses and Dissertations
This dissertation is an examination of Arab and South Asian American men’s (1) experiences and perceptions of discrimination and belonging in two non-traditional immigrant destinations in the United States (U.S.) south, and (2) their performance of masculinities in response to Muslim women’s experiences with Islamophobia. I use intersectional theory, theories of race and racism, theories of gender, theories on belonging, and grounded theory to analyze 23 qualitative semi-structured interviews with Arab and South Asian men who live in one large city and one rural town in the U.S. south. I find that upper-, middle-, and working-class Arab and South Asian …
“And The Next Day, You Are In Charge”: Policy Recommendations Stemming From A Qualitative Investigation Into The Professional Development Of Early Career Peer Support Specialists In Kentucky., Diane Zero
Electronic Theses and Dissertations
Over the last twenty years, the peer support segment of the behavioral health workforce has grown rapidly. However, few researchers have studied the effects on individuals from transitioning into the role. Likewise, there is limited research examining the professional development process of early career peer support specialists. To begin to fill these gaps in the literature, I conducted a qualitative research study examining workforce development experiences of peer support specialists in Kentucky. This dissertation reports on its findings and includes a policy paper with recommendations for improving policy and practice. Chapter one offers an introduction to the peer support workforce …
Biometric Features Modeling To Measure Students Engagement., Islam Mohamed Ahmed Mohamed Mahmoud Alkabbany
Biometric Features Modeling To Measure Students Engagement., Islam Mohamed Ahmed Mohamed Mahmoud Alkabbany
Electronic Theses and Dissertations
The ability to measure students’ engagement in an educational setting may improve student retention and academic success, revealing which students are disinterested, or which segments of a lesson are causing difficulties. This ability will facilitate timely intervention in both the learning and the teaching process in a variety of classroom settings. In this dissertation, an automatic students engagement measure is proposed through investigating three main engagement components of the engagement: the behavioural engagement, the emotional engagement and the cognitive engagement. The main goal of the proposed technology is to provide the instructors with a tool that could help them estimating …
Explosive Family Dinners: Bipolar Disorder, Temporal Lobe Epilepsy & Me Critical Afterword Convulsive Family Dynamics: When Mental And Neurological Disabilities Entangle And Isolate., Elizabeth Lane Glass
Explosive Family Dinners: Bipolar Disorder, Temporal Lobe Epilepsy & Me Critical Afterword Convulsive Family Dynamics: When Mental And Neurological Disabilities Entangle And Isolate., Elizabeth Lane Glass
Electronic Theses and Dissertations
This dissertation is a memoir that is about my nuclear family. The themes within the memoir itself include my father’s bipolar disorder, my temporal lobe epilepsy, and how volatile the combination was as I grew up, but also how loving my family was, despite all the issues. It also looks at the ramifications of having temporal lobe epilepsy, growing up queer (bi+) in a time when being queer at all was not accepted and being bi+ was not understood, and the issues I’ve had with my sisters, which were caused in part by my father The memoir is accompanied by …
Framing The Guard: A Content Analysis Of How The News Media Frames The National Guard During Times Of Crisis., Taylor L. Tolles
Framing The Guard: A Content Analysis Of How The News Media Frames The National Guard During Times Of Crisis., Taylor L. Tolles
Electronic Theses and Dissertations
A quantitative content analysis of 585 newspaper articles gathered from seven news sources that covered the National Guard’s response to COVID-19, BLM Protests, and the Capitol Riot were used to determine the prevalence of frames used to depict the Guard during times of crisis. By using the five frames found in media framing (Entman, 1991), the prevalence of frames found in newspaper media was compared to the prevalence of frames found to be used in times of crisis (Semetko & Valkenburg, 2000). The results showed that even though the Guard’s response in times of crisis is similarly framed as previous …
Cosine-Based Explainable Matrix Factorization For Collaborative Filtering Recommendation., Pegah Sagheb Haghighi
Cosine-Based Explainable Matrix Factorization For Collaborative Filtering Recommendation., Pegah Sagheb Haghighi
Electronic Theses and Dissertations
Recent years saw an explosive growth in the amount of digital information and the number of users who interact with this information through various platforms, ranging from web services to mobile applications and smart devices. This increase in information and users has naturally led to information overload which inherently limits the capacity of users to discover and find their needs among the staggering array of options available at any given time, the majority of which they may never become aware of. Online services have handled this information overload by using algorithmic filtering tools that can suggest relevant and personalized information …
Urban Teacher's Perspectives On Teaching Diverse Students., Julie Chancellor
Urban Teacher's Perspectives On Teaching Diverse Students., Julie Chancellor
Electronic Theses and Dissertations
Teachers who are mostly White often do not understand their cultural disconnect from their mostly non-White students (Blaisdell, 2016; King, 1991). Having teachers exposed to, and competent with, Culturally Responsive Pedagogy (CRP) (Ladson-Billings, 1995) and Culturally Sustaining Pedagogy (CSP) (Paris, 2012) can help bridge that divide. Since CSP is a relative newcomer to educational pedagogy, this study was designed to discover what CSP traits teachers have and how these traits impact their students. This qualitative case study is comprised of four teachers at one urban high school that has historically been designated as not making adequate progress. These teachers are …
Electrochemical Characterization Of Surface-Immobilized Metal Nanostructures: Stability, Atomic Level Doping, Catalysis, And Sensing Applications., Badri Prasad Mainali
Electrochemical Characterization Of Surface-Immobilized Metal Nanostructures: Stability, Atomic Level Doping, Catalysis, And Sensing Applications., Badri Prasad Mainali
Electronic Theses and Dissertations
This dissertation has two main themes. The first theme involves voltammetric analysis of the stability of Au nanoparticles (NPs) under electrochemical and thermal treatment as a function of size, ligand stabilizer, and atomic composition. The second theme involves the use of Au NPs, electrophoretic deposition (EPD), and anodic stripping voltammetry (ASV) for electrochemical detection of analytes. The electrochemical size stability of 4.1, 15.1, and 50.3 nm average diameter Au NPs upon treatment with multiple electrochemical oxidation-reduction cycling in acidic electrolyte is monitored by observing changes in the peak oxidation potential (Ep) in ASV and the electrochemically measured surface …
Motion And Emotion Estimation For Robotic Autism Intervention., Jacob M Berdichevsky
Motion And Emotion Estimation For Robotic Autism Intervention., Jacob M Berdichevsky
Electronic Theses and Dissertations
Robots have recently emerged as a novel approach to treating autism spectrum disorder (ASD). A robot can be programmed to interact with children with ASD in order to reinforce positive social skills in a non-threatening environment. In prior work, robots were employed in interaction sessions with ASD children, but their sensory and learning abilities were limited, while a human therapist was heavily involved in “puppeteering” the robot. The objective of this work is to create the next-generation autism robot that includes several new interactive and decision-making capabilities that are not found in prior technology. Two of the main features that …
Variable Autonomy Assignment Algorithms For Human-Robot Interactions., Christopher Kevin Robinson
Variable Autonomy Assignment Algorithms For Human-Robot Interactions., Christopher Kevin Robinson
Electronic Theses and Dissertations
As robotic agents become increasingly present in human environments, task completion rates during human-robot interaction has grown into an increasingly important topic of research. Safe collaborative robots executing tasks under human supervision often augment their perception and planning capabilities through traded or shared control schemes. However, such systems are often proscribed only at the most abstract level, with the meticulous details of implementation left to the designer's prerogative. Without a rigorous structure for implementing controls, the work of design is frequently left to ad hoc mechanism with only bespoke guarantees of systematic efficacy, if any such proof is forthcoming at …
Community Structure And Dynamics Of Benthic Macroinvertebrates In A Recreated Headwater Stream System On A Valley Fill In A Retrofitted Watershed Located In The Appalachian Coalfields Of Southeastern Kentucky (U.S.A.), Steven W. Bailey
Electronic Theses and Dissertations
The extraction of coal from steep-gradient surface mining sites such as in the Appalachian Coalfields of the U.S. produces excess debris that is often placed in adjacent valleys resulting in the creation of valley fills. Not only are headwater streams buried in the process, but watershed functions are either destroyed outright, or become fragmented and disconnected from adjacent ecosystems resulting in adverse effects to downstream biological communities. In this dissertation, the dynamics of stream macroinvertebrate community structure, composition, diversity, and biotic integrity are assessed at a “proof of concept” stream system recreated on a retrofitted valley fill. For comparison, two …