Digital Commons Network^™

Hotel De Vagabundos: Reviewing African American Theatre Journey., Manuel Francisco Viveros

Electronic Theses and Dissertations

This analysis examines how Hotel de Vagabundos, a play written by a black playwright from Colombia, fits into the core of definitions of Black Theatre in the United States. I will examine six documents I consider relevant to shape the idea of Black Theatre in the US from 1900 through 2005. The author's experience in New York during the 1940s inspires Hotel de Vagabundos. The author navigates the globalized ethos idea unleashing clashes about identity to criticize aspects of American culture about immigrants, poor people, and internalized racism within African American and Black diasporic communities. The play “like a …

The Long Journey Down Market Street: An Oral History Based Biography Of Mary Craik., Denise Vulhop Watkins

Electronic Theses and Dissertations

This interdisciplinary dissertation examines the life of Mary B. Craik, a Louisvillian who was a professor, feminist activist, philanthropist and artist. The project’s main focus is on Craik’s feminist awakening and activism, and their alignment with second wave feminism. The primary method of data collection was oral history and consisted of interviews with Craik and some of her friends, acquaintances, and colleagues. Additional sources included a scrapbook that documented her major life events, the trial transcript from a gender discrimination lawsuit she launched, and art quilts she made in her later years after she retired. This project examines these resources …

Experimental Evaluation Of Heat Leak And Convective Heat Transfer In A Household Freezer., Catherine E. Berghuis

Electronic Theses and Dissertations

Heat leak into household refrigerated cabinets is a key driver affecting energy consumption and efficiency of the cooling system. Additionally, knowledge of heat transfer coefficients of internal surfaces is valuable in the development of cabinet and system level performance simulations. Several studies have examined heat leak of refrigeration units using heat flux sensors (HFS); however, no such studies have used heat flux measurements to derive convective heat transfer coefficients of the refrigerated unit walls. The goal of this study is to evaluate the use of HFS to quantify heat leak into a 490-liter freezer and determine the wall convective heat …

Geographic Imaginaries Of Urban Spatial Segregation: A Case Study Of The West End Neighborhoods In Louisville, Kentucky., Amber Dock

Electronic Theses and Dissertations

The objective of this thesis is to translate the framework of geographic imaginaries into an urban context in order to capture a narrative of how residents conceptualize and experience segregation. This framework is rooted in an investigation of local discourses as they exist within a specific social, political, and historical context. Institutionalized segregation and structural racism are the foundations on which the American urban context studied here was built upon. This study employs multiple methods, including contextualizing the study area, analyzing discursive content, and visualizing the results. The results of these analyses included empirically connecting concentrations of protected classes to …

Experimental And Numerical Study Of Process Parameters Effects Towards Part Quality And Porosity During Powder Bed Additive Manufacturing Processes., Subin Shrestha

Electronic Theses and Dissertations

Powder bed additive manufacturing (PB-AM) process utilizes an electron beam or a laser as a heat source to melt the metallic powder particles. These processes have the capability of freeform fabrication, however certain defects such as porosity, high surface roughness, etc. would hinder its application. It is important to understand the effect of the process parameters and the underlying physical phenomena, which lead to the formation of such defects. In this regard, a three-dimensional (3D) thermo-fluid model is developed to study the effect of beam speed on the surface morphology during powder bed electron beam additive fabrication (PB-EBAF). Besides, the …

A Novel Mathematical Model Of The Trojan Y-Chromosome Strategy With Optimal Control, Christopher Turner

Electronic Theses and Dissertations

Invasive species are a prevalent problem all over the world. Controlling and eradicating an invasive species is an even more diffcult problem. The Trojan Y Chromosome (TYC) eradication strategy is one control method. This method alters the female to male sex ratio by introducing sex reversed males called supermales. These sex reversed males can only produce male progeny. Mathematical models of this strategy have shown that a population can be driven to extinction with a continuous supply of these sex reversed males. There are many different mathematical models of this strategy, but most have serious flaws, such as negative solutions …

The Effects Of Self-Regulation Depletion And Race On The Willingness To Interact With Individuals With Mental Illness, Kenocha K. Epperson

Electronic Theses and Dissertations

Although the discrimination that Black individuals encounter is unique, it is similar in some ways to the discrimination experienced by individuals with mental illness (Corrigan & Wassel, 2008; Follmer & Jones, 2018; Jackson & Stewart, 2003). Research has found that these kinds of stigma can be overridden (Baumeister et al., 1998), but doing so requires self-regulation, which can be depleted (Gailliot et al., 2007). Because stigma exists against both Black individuals and those with mental illness, and because self-regulation is necessary to override those stigmas, the purpose of this project was to examine the relationships to which Black participants would …

Addition Of Fermentation Experiment To Unit Operations Laboratory, Jeremy T. Rone

Electronic Theses and Dissertations

With the growth of the distillery and brewery industries and the potential jobs created for chemical engineers, it is imperative to equip the chemical engineering graduates from the University of Louisville with knowledge of bioreaction kinetics and experience in performing calculations to solve for concentration profiles and reaction rates. To accomplish this, it is recommended to add a fermentation experiment to the Unit Operations Laboratory II course.

Four groups of students from the Spring 2020 Unit Operations Laboratory II course performed the fermentation experiment. They were able to successfully complete all lab requirements as well as analyze the results and …

Labview Improvements And Equipment Redesign Of Unit Operations Distillation Column, Madalyn S Wead

Electronic Theses and Dissertations

Unit Operations labs are important tools to provide hands-on learning with various chemical processes. The distillation lab experiment allows students to connect equations and definitions from textbooks to the physical processes of distillation as they occur. LabVIEW was the software development tool used to create a program to control the distillation column from startup to shutdown. Improvements were made to both the distillation process equipment and the LabVIEW code to create a more interactive lab experience, enhance students’ conceptual understanding of distillation, and prepare students for their future career as chemical engineers.

Equipment addressed included non-linear valves, malfunctioning temperature and …

Determination Of Selenite And Selenate In Wet Flue Gas Desulfurization Process Water Through Ic-Icp-Ms And Hg-Icp-Aes, Samuel Anthony Kelty

Electronic Theses and Dissertations

During coal-fired electric power production, coal bound elemental selenium is released into the gas phase and oxidized to selenite and selenate in the wet flue gas desulfurization (WFGD) unit. Selenite and selenate solubilize in the WFGD process water. A process water system at a coal fired power plant contributes to environmental regulation compliance by removing the selenium species from WFGD process water. A selenium speciation method was developed for the purpose of better monitoring the selenium species present in the “treated” process water and to aid the process water system in meeting compliance with the Environmental Protection Agency’s Effluent Limitation …

Converting Threats Into Opportunities Predicting Medical Error Reporting Behavior., Whitney Thomas Rogers

Electronic Theses and Dissertations

Medical errors are a public health epidemic and a major threat to patient safety. Estimates suggest they may be responsible for 210,000 - 440,000 preventable deaths per year. This would make medical errors the third leading cause of death in the United States. The societal burden of medical errors is steep, with the economic impact near $1 trillion. The purpose of this study was to use a theory-driven approach to better understand the reporting behavior of healthcare professional. Increased error reporting leads to heightened awareness of the precursors or conditions generating errors, which can then be corrected. In its most …

The Role Of Inter-Enlargement Propriospinal Neurons In Locomotion Following Spinal Cord Injury., Courtney Therese Shepard

Electronic Theses and Dissertations

The focus of this dissertation is to explore the functional role of two anatomically-defined pathways in the adult rat spinal cord before and after spinal cord injury (SCI). To do this, a Tet^On dual virus system was used to selectively and reversibly silence neurons with cell bodies at spinal segment L2 and projections to spinal segment C6 (long ascending propriospinal neurons, LAPNs) and neurons that originate in the C6 spinal segment and terminate at L2 spinal segment (long descending propriospinal neurons, LDPNs). This dissertation is divided into five chapters. Chapter One provides background information regarding spinal cord injury, locomotion, …

Development And Validation Of The Measure Of Perceived Safety In The College Classroom: A Mixed Methods Phenomenological Research Study., Jennifer Ballard-Kang

Electronic Theses and Dissertations

In recent years, safety has become a focus of discussion in the field of higher education as research indicates that college students’ perceptions of safety are related to several indicators of student engagement. Despite increased recognition of the importance of safety, there remains a lack of consensus with regard to its definition and conceptualization in the higher education context. This lack of a conceptualization of safety that reflects the complexity of the construct within the postsecondary context has acted as a barrier to the development of quality measurement instruments that can be utilized by researchers and practitioners to understand and …

American Nocturne., Zahid Saeed

Electronic Theses and Dissertations

American Nocturne is a photographic meditation on the nature of America. There is a long tradition of American photographers looking around their localities to look for this feeling. Using the aesthetics of straight photography, I have worked with a largeformat view camera to search for America. The prism through which I view America is a mixture of both a veneration, an abiding fascination, and at the same time a deep ambivalence towards an overbuilding, overproducing, and over wasting culture. My hope with American Nocturne is to present my view of America, with its contradictions and its beauty. For me the …

The Retinoblastoma Protein Mediates Metabolic Reprogramming In Lung Cancer., Lindsey R. Conroy

Electronic Theses and Dissertations

Lung cancer is among the most frequently diagnosed cancers and is the leading cause of cancer-related deaths worldwide. One of the hallmark events in lung cancer pathogenesis is deregulation of the cell cycle. The retinoblastoma protein (pRb) is a tumor suppressor that is deleted, mutated, or inactivated in most lung cancer cases. Canonically, pRb functions to regulate cell cycle progression by repressing the transcriptional activity of the E2F family of transcription factors, inhibiting S phase entry. Although the cell cycle functions of pRb have been well established, recent studies have highlighted a functional role for pRb in controlling cellular metabolism. …

Examining Corporate Blameworthiness In Relation To Federal Organizational Sentencing For Probation And Corporate Monitors., Emily M. Homer

Electronic Theses and Dissertations

Organizations that have benefitted from the commission of federal crimes committed by their employees may be sentenced to federal criminal penalties. Two of these potential penalties include probation and the requirement to implement a corporate monitor. The federal guidelines provide suggestions for sentencing probation that echo the theoretical focal concern of blameworthiness. This research used eight years of United States Sentencing Commission data covering 2011 to 2018 (n= 1,224) to examine if organizations were being sentenced to probation and monitoring consistent with the federal guidelines and focal concern of blameworthiness. The study examined nine potential measures of blameworthiness …

Novel Bayesian Methodology For The Analysis Of Single-Cell Rna Sequencing Data., Michael Sekula

Electronic Theses and Dissertations

With single-cell RNA sequencing (scRNA-seq) technology, researchers are able to gain a better understanding of health and disease through the analysis of gene expression data at the cellular-level; however, scRNA-seq data tend to have high proportions of zero values, increased cell-to-cell variability, and overdispersion due to abnormally large expression counts, which create new statistical problems that need to be addressed. This dissertation includes three research projects that propose Bayesian methodology suitable for scRNA-seq analysis. In the first project, a hurdle model for identifying differentially expressed genes across cell types in scRNA-seq data is presented. This model incorporates a correlated random …

Predictors Of Binge Drinking Among Military Veterans: A General Strain Theory Approach., Emily Ann Hayden

Electronic Theses and Dissertations

This dissertation is theoretically informed by General Strain Theory (GST) (Agnew 1992, 2002), and examines binge drinking within a military veteran population. It begins with an assessment on reform and focuses on shaping knowledge around the issue of binge drinking by military veterans. The current study uses Agnew’s GST to argue for an understanding of how strain and stress can affect individuals who have served in the military and acknowledges how this strain can lead to negative coping mechanisms such as binge drinking. The latter part of the dissertation argues that understanding Agnew’s GST (1992, 2002) with a military population …

Anxiety And How To Control It: The Functional Role Of The Bed Nucleus Of The Stria Terminalis., Lindsay K. Knight

Electronic Theses and Dissertations

Anxiety disorders afflict up to one third of the population. Research to date has primarily focused on the amygdala, however, new perspectives suggest that a tiny basal forebrain region known as the bed nucleus of the stria terminalis (BNST) may hold key insights into understanding and treating anxiety disorders. Therefore, my first aim was to empirically investigate the importance and influence of the BNST in anxiety processing. Using fearful faces and human screams as aversive stimuli, two threat conditions were created: one in which threats were certain and predictable (fear) and another in which threats were uncertain and unpredictable (anxiety). …

White Moves First: Unearthing White Privilege In The Modern Board Game., Darrell A. Johnson

Electronic Theses and Dissertations

This dissertation focuses on the design choices in the modern board game and argues that game designs emerge from and constitute dominant ideologies that endorse and secure white male superiority. This dissertation utilizes Michel Foucault’s archaeological method to “unearth” ideologies that cultural artifacts both emerge from and constitute. The project considers three central questions: 1) How does the locus of production and consumption impact the dominant ideology underlying game design? 2) How do design choices secure and constitute an ideology of white male dominance? 3) What impact does the normalization of white dominance have upon the broader community? This dissertation …

Selective Laser Melting 17-4 Ph Stainless Steel And The Effect Of Varied Thermal Treatments On Fatigue Behavior., Sean Daniel Dobson

Electronic Theses and Dissertations

Fatigue failure is the leading source of loss in industry. In order for new means of manufacturing to move towards mainstream use a complete understanding of material and mechanical behavior must be gained. This endeavor seeks to aide in that task by observing the fatigue behavior of selective laser melting (SLM) additive manufacturing (AM) specimens and the effect of differing thermal treatment conditions for an optimized AM process. Stainless steel 17-4 PH specimens were fabricated using SLM AM and thermally treated to three conditions: as-built, solutionized and hardened, and direct hardened. These specimens were characterized for material (powder quality, density, …

Autism Spectrum Disorder: Investigating Predictive Adaptive Behavior Skill Deficits In Young Children., Emma L. Feige

Electronic Theses and Dissertations

Autism Spectrum Disorder (ASD) is a lifelong neurodevelopmental disorder that consists of difficulties with social communication and language, as well as the presence of restricted and repetitive behaviors. These deficits tend to present in early childhood and usually lead to impairments in functioning across various settings. Moreover, these deficits have been shown to negatively impact adaptive behavior and functioning. Thus, early diagnosis and intervention is vital for future success within this population. The purpose of this study was to further examine the subscales that comprise the adaptive behavior section of the Bayley-III to determine which of the ten subscales are …

Regression And Progression: Portrayals Of Midnighter And Apollo Wildstrom And Dc Comics., Adam J. Yeich

Electronic Theses and Dissertations

This project examines portrayals of Midnighter and Apollo, a gay couple, first published by WildStorm and by DC Comics. Analysis of these different portrayals reveals the manner in which WildStorm conveyed the characters in a homonormalized fashion as a means of making them acceptable to mainstream audiences via the perpetuation of homophobic ideas and negative stereotypes. The portrayals from DC Comics was a more natural representation of characters, without special attention paid to their orientation and the development of the relationship being present on the page for readers, conveying gay men as no different than anyone else. Analysis of the …

Analyzing The Effects Of Of Seasonal Land Cover And Precipitation On The Sediment Delivery Ratio Of An Agriculture Dominated Watershed., Jonah Liebman

Electronic Theses and Dissertations

Soil erosion is of escalating importance as increasing population and climate change have put increasing pressures on agricultural food production. Vegetation and precipitation are two factors that control the amount of soil erosion extant within a region. Sediment delivery ratios (SDRs) assess the ratio of soil eroded from a watershed system that is permanently removed from the system through stream sediment discharge. Using 1) river discharge and sediment concentration data and 2) the Revised Universal Soil Loss Equation (RUSLE), this thesis analyzes fluctuations in monthly SDRs for an average hydroclimatological crop-harvest season for the Senachwine Creek watershed, IL. Through calculating …

Backing Tracks/Play-Along Materials: Origins Of Several Currently Popular Platforms And Strategies For Their Use., Giovanni De Castro Sena

Electronic Theses and Dissertations

The objective of this research is to discuss if the use of backing tracks/play-along materials can be an effective method for musical development. For this end, I interviewed six influential musicians who answered particular questions in order to have a better understanding about the real-world scenario of the use of backing track materials. Based on their answers, I found that the learning engagement and/or musical development happen when specific strategies while using such materials are made.

The Influence Of Self-Forgiveness On Relationship Satisfaction Post-Infidelity., Dominic Schmuck

Electronic Theses and Dissertations

While a plethora of research studies exist regarding victims’ healing processes post-infidelity, almost no empirical data is available regarding perpetrators’ healing processes post-infidelity. In recent years, researchers have found that self-forgiveness after an interpersonal offense can aid individuals in healing intrapersonally and interpersonally. Self-forgiveness research even suggests a connection between genuine self-forgiveness and relationship satisfaction. The current study set out to explore the possible intrapersonal and interpersonal healing effects of self-forgiveness after participating in infidelity. For this study, individuals who participated in infidelity within the past two years and are still with the partner they betrayed were recruited. With support …

A Content Analysis Of Olivia Pope: How Scandal Reconfirms The Negative Stereotypes Of Black Women., Chelsy Leann Golder

Electronic Theses and Dissertations

The purpose of this study is to answer how Scandal reconfirms the negative stereotypes of black women. Scandal’s leading character, Olivia Pope, embodies the Mammy, the Jezebel, and the Sapphire. These stereotypes were invented during slavery and still used today to justify the current racial and gendered oppression of Black women. A linkage between the stereotypes and Olivia Pope’s character will be made based on an analysis of the television show. A random sampling approach was used to select a total of 14 episodes. Each of the 14 episodes were carefully examined for examples of Mammy-like, Jezebel-like, and Sapphire-like …

Depressive Symptoms And Survival Among Lung Cancer Patients: Biomarkers And Potential Benefits Of An Ipod- And Mindfulness-Based Intervention., Chelsea J. Siwik

Electronic Theses and Dissertations

Lung cancer patients experience high levels of distress, which commonly manifests as depressive symptoms. Importantly, depressive symptoms have demonstrated prognostic significance in cancer contexts, although the biological pathways by which depressive symptoms lead to poorer survival remain unclear and warrant greater attention. In addition to understanding the biological pathways by which depressive symptoms accelerate disease, identification of efficacious and effective psychological treatments for depressive symptoms are needed to improve both quality and quantity of life for cancer patients. Interventions that reduce depressive symptoms and improve downstream clinical outcomes are certainty needed; however, because many cancer patients face considerable burden, interventions …

Electrochemical Reduction Of Carbon Dioxide And Carbon Monoxide For The Production Of Green Fuels And Chemicals., Jacob M. Strain

Electronic Theses and Dissertations

It has become apparent that closing the carbon cycle on this planet in order to mitigate disastrous consequences of runaway global warming has become one of the most pressing issues of our civilization. One of the ways we need to accomplish this goal is by finding news methods to generate fuels that will be carbon neutral. Renewable fuels and green chemicals will be a major component of closing the carbon cycle and restoring our planet’s ecosystem into a sense of balance. A method that can help achieve this goal is the reduction of CO₂. If CO₂ can …

The Development Of A Culturally-Informed Cervical Cancer Screening And Prevention Mhealth Intervention For African American Women., Ariel Washington

Electronic Theses and Dissertations

Background: Significant strides have been made in reducing the burden of cervical cancer and HPV. Between pap smear screenings and HPV vaccinations, there has been a reduction in cervical cancer incidence in the United States. Unfortunately, those reductions have not been experienced by all ethnic groups. Cervical cancer disparities are a threat to the health of African American women, and innovation in education and the healthcare experience is needed to eliminate this threat. This study aimed to develop and evaluate a culturally tailored intervention using mHealth services to improve cervical cancer and HPV knowledge. Methods: The development and evaluation of …