Digital Commons Network^™

Roots Of Quaternionic Polynomials And Automorphisms Of Roots, Olalekan Ogunmefun

Electronic Theses and Dissertations

The quaternions are an extension of the complex numbers which were first described by Sir William Rowan Hamilton in 1843. In his description, he gave the equation of the multiplication of the imaginary component similar to that of complex numbers. Many mathematicians have studied the zeros of quaternionic polynomials. Prominent of these, Ivan Niven pioneered a root-finding algorithm in 1941, Gentili and Struppa proved the Fundamental Theorem of Algebra (FTA) for quaternions in 2007. This thesis finds the zeros of quaternionic polynomials using the Fundamental Theorem of Algebra. There are isolated zeros and spheres of zeros. In this thesis, we …

Tell The Bees That Transcendentalism Is Lost: The Search For The Lost Transcendental Space In The Bee Poetry Of Emily Dickinson And Sylvia Plath, Adyson M. Ross

Electronic Theses and Dissertations

Ralph Waldo Emerson’s bee poem, “The Humble-Bee,” expresses the nineteenth-century transcendentalist philosophy of finding wholeness and oneness in nature while Sylvia Plath’s twentieth-century bee poems function as a response to Plath’s feelings of alienation and repression, indicating that transcendental peace is lost in the postmodern era. Emerson’s poem indicates the spiritual fulfilment found through observing bees and highlights the harmony between humans and nature, but women of the nineteenth century find difficulty achieving this same level of freedom; Emily Dickinson reclaims the language of transcendentalism in her bee poetry to explore a world otherwise denied to her. The effects of …

Extracting Topography From Historic Topographic Maps Using Gis-Based Deep Learning, Briar Pierce

Electronic Theses and Dissertations

Historical topographic maps are valuable resources for studying past landscapes, but they are unsuitable for geospatial analysis. Cartographic map elements must be extracted and digitized for use in GIS. This can be accomplished by sophisticated image processing and pattern recognition techniques, and more recently, artificial intelligence. While these methods are generally effective, they require high levels of technical expertise. This study presents a straightforward method to digitally extract historical topographic map elements from within popular GIS software, using new and rapidly evolving toolsets. A convolutional neural network deep learning model was used to extract elevation contour lines from a 1940 …

Key Determinants Of Using Telehealth Technologies Among Underserved Populations From The Perspective Of Patients And Providers, Johanna Cimilluca

Electronic Theses and Dissertations

Background: The utilization of telehealth has had a substantial impact on transforming and enhancing the methods by which healthcare is presently delivered. The potential benefits of telehealth in improving the health of vulnerable populations and underserved communities are substantial. The aims of this study were to examine the association between social determinants of health and patient perceptions of their experiences with telehealth. We will analyze how perceptions differ across specialization, race, gender, and other key determinants; examine how patient’s self-rated physical health and mental health influences perceptions and attitudes about telehealth utilization; and evaluate differences in perceptions and attitudes, …

Unsupervised Dimension Reduction Techniques For Lung Diagnosis Using Radiomics, Janet Kireta

Electronic Theses and Dissertations

Over the years, cancer has increasingly become a global health problem [12]. For successful treatment, early detection and diagnosis is critical. Radiomics is the use of CT, PET, MRI or Ultrasound imaging as input data, extracting features from image-based data, and then using machine learning for quantitative analysis and disease prediction [23, 14, 19, 1]. Feature reduction is critical as most quantitative features can have unnecessary redundant characteristics. The objective of this research is to use machine learning techniques in reducing the number of dimensions, thereby rendering the data manageable. Radiomics steps include Imaging, segmentation, feature extraction, and analysis. For …

Powerful And Powerless: Reconfiguring The Agency And Supremacy Of Women In Selected Festivals In The Yoruba Town Of Isaga Orile, 1900-1958, Olusegun Olatunji

Electronic Theses and Dissertations

This thesis discusses how the gender dynamics and religious festivals of the Yoruba people in Isaga Orile were not affected by colonialism. The study draws on various accounts, particularly from the Church Missionary Society’s journals, to attest to colonialism's restructuring of male political hegemony. Focusing on two major festivals, Gelede and Oro, the study argues that men's inclusion in Gelede reinforces female supremacy, while the Oro society shows men's hegemony and restrains women from its activities. The study found that gender dominants in these festivals played complementary roles by mirroring female and male roles within the Isaga Orile political system. …

Examining Teachers' Referral And Placement Decisions Of Hispanic Children For Gifted And Talented Programs, Guillermo I. Mendoza

Electronic Theses and Dissertations

This quantitative survey design study examined whether children’s ethnicity makes a difference in teachers’ referral and placement decisions in gifted and talented (G/T) programs. A total of 524 teachers from all over the United States who have taught or currently teach pre-kindergarten through 5th grade participated. The participants were randomly given one of six vignettes adapted from a previous similar study (Elhoweris et al., 2005). Participants answered whether the child described should be referred and placed into gifted and talented programs. All six vignettes described gifted and talented characteristics; the only differences were the children's ethnicity and socioeconomic status. Data …

Perceptions Of Primary Caregivers About Managing Their Child’S Transition To Kindergarten: A Mixed-Methods Study, Kristy Lynn Castanon

Electronic Theses and Dissertations

The study aimed to explore the perceptions of primary caregivers as they manage their child’s transition to kindergarten. The study used a mixed-methods explanatory sequential design consisting of two phases. In phase 1, 64 primary caregivers of children transitioning to kindergarten completed the Kindergarten Caregiver Perceptions survey. Phase 1 participants were recruited from K-Camp, a program designed to support families and children during the transition. Descriptive statistics were analyzed to identify the concerns of caregivers, investigate their desired information and support, examine their involvement in transition activities, and understand caregivers’ perceived level of self-efficacy in managing their child’s transition to …

Identifying Taphonomic Distribution Patterns At The Gray Fossil Site, Shawn Haugrud

Electronic Theses and Dissertations

Since the early days of the discovery of the Gray Fossil Site (GFS), meticulous efforts to preserve the spatial data were a priority. Direct surveying of fossils prior to recovery, as well as grid mapping the site, provided relative spatial data within a square meter. Such efforts meant that even fragments and microfossils, recovered during the screening operations and eventual concentrate picking, maintained some spatial data. Available spatial data are used to identify smaller deposits within the greater system, as well as non-random distribution patterns among a number of GFS taxa. Patterns are particularly pronounced in the large-bodied taxa, Teleoceras …

Inhibiting Survival Of Salmonella During Desiccation Through The Use Of Naturally Occurring Signals, Joseph Headrick

Electronic Theses and Dissertations

A rising problem in agriculture is the increase of antibiotic-resistant Salmonella cases associated with chicken eggs, which transmit infection to humans. To counter this, new approaches to combat Salmonella in chickens and desiccated on eggshells are vital in the prevention of human foodborne illness. Disrupting signaling pathways with naturally occurring compounds provides a potential novel avenue for prevention of Salmonella infections, as this would disrupt sensing of these environments and inhibit subsequent optimal gene expression. Starting with signals identified in previous studies, salicylic acid was found to inhibit Salmonella desiccation survival on both eggshells and plastic. To expand upon this, …

Witness, Revival, Testimony, Laura Ann Schroeder

Electronic Theses and Dissertations

The artist, Laura Ann Schroeder, discusses her Master of Fine Arts thesis exhibition, Witness, Revival, Testimony, which was installed at Tipton Gallery in Johnson City, TN from March 2, 2023 through March 31, 2023, with a public reception held on March 24, 2023. The exhibition consisted of a collection of sculptural works and installations that evoke scenes and memories from the artist’s childhood. This body of work deconstructs the traditional family dynamic and the private domestic space through recreations of everyday life. The artworks are primarily made with repurposed consumer textiles and techniques like stitching and quilting that have historically …

Consuming The World: Poetic Appetite, Memory, And Identity In Li-Young Lee’S Food Poems, Claire Liszka

Electronic Theses and Dissertations

Food is a universal human necessity, yet food often serves more than a biological purpose as it informs individual and communal identities, and even facilitates memory. This thesis explores personal memory, the development of identity, and an almost reverential connection to nature in several food poems by Li-Young Lee in Rose (1986) and Behind My Eyes (2008). Born in 1957, Lee has been writing poetry since he was young, studying under Gerald Stern in the late 1970s, and he is known for writing sublime, transcendent yet incredibly accessible and expressive poetry. This thesis gives an overview of food studies and …

Selecting Classroom Grading Practices: A Qualitative Study Exploring Teacher Experiences, Tallye Gass

Electronic Theses and Dissertations

The purpose of this qualitative research was to understand the experience of selecting grading practices for a high school math or English classroom. There is no existing research related to understanding this phenomenon. This phenomenological study included three participants who were purposefully selected based on specific criteria: They must teach math or English in grades 9, 10, 11, or 12 and have at least three years of teaching experience. The participants were interviewed using videoconferencing software, and the interviews were recorded and transcribed. Open and axial coding was used to analyze the data. The theoretical framework applied for the interpretation …

Spin Trapping Behavior Of Some Selected Melatonin Derivatives For Hydroxyl Radicals: A Computational Study, Aaron Caesar

Electronic Theses and Dissertations

Melatonin (N-acetyl-5-methoxytryptamin, MLT) is a naturally occurring antioxidant which has shown some potential for use as a spin trap. Spin traps react with short lived hydroxyl radicals (HO·) to produce more stable products called spin adducts which may be characterized by electron paramagnetic resonance spectroscopy. However, the relative stability of hydroxyl spin adducts of melatonin derivatives (MLTD) compared to 2-hydroxymelatonin (HO-MLT) has not been examined computationally. Computational studies have been done on four selected MLTD; methylmelatonin (Me-MLT), chloromelatonin (Cl-MLT), cyanomelatonin (CN-MLT), and nitromelatonin (NO₂-MLT). Geometry of the structures were optimized at the HF/6-31G(d), cc-pVXZ, (X=D and T) and …

Enhancing Stem Education For East Tennessee In A Post-Covid World, Jennifer L. Lauer

Electronic Theses and Dissertations

I have identified a need for an analysis of the middle and high school STEM education curricula in the East Tennessee Region which does not effectively integrate technology into their current instruction, which results in low student engagement, motivation, and achievement in the instruction and learning of algebra and geometry. I propose a program to identify specific applications and methods to be integrated into these programs which will improve the abilities of teachers to positively impact their students' understanding and mastery of algebra and geometry. Using emerging and novel STEM subject instruction, teaching, and engagement methods, and focusing on the …

Bibliotherapy: A Literary And Linguistic Analysis Of Literature, Matthew Curry

Electronic Theses and Dissertations

Bibliotherapy—the process of utilizing literature for its therapeutic properties—has been around for centuries; however, it wasn’t until a surge of research in the 1920s that the process became recognized as an adequate method of therapy. With the rising mental health crisis looming over the United States, the time to develop, establish, and advocate for a bibliotherapeutic curriculum in K-12 public education is now. Using literary works such as Gary Paulsen’s Hatchet, Helena Fox’s How it Feels to Float, and Laurie Halse Anderson’s Speak, this thesis establishes the literary, therapeutic, and pedagogical reasoning for the implementation of such …

Mankind Is Machine: A Monstrous Posthuman Reading Of Philip K. Dick’S Selected Works, Gabriel Davis

Electronic Theses and Dissertations

The works of Philip K. Dick act as an ideal template for readers to explore what it means to be human in a technologically dominated world. Dick’s emphasis on the usage of androids and artificial intelligence as literary monsters allows for a posthuman reading of the traditional literary monster, notably in how their uncanny nature and behavior helps reveal the synthetic tendencies of humanity. In Do Androids Dream of Electric Sheep?, “Imposter,” and “I Hope I Shall Arrive Soon,” each narrative incorporates artificial intelligence and androids acting as others to reveal the machine-like qualities of Dick’s human characters. This …

Comparative Characteristics Of Integrin Αdβ2 Binding To Native Fibrinogen And Fibrinogen Modified By Dha Oxidation During Inflammation, Ajibola Ilesanmi

Electronic Theses and Dissertations

2-ω-carboxyethylpyrrole (CEP) is a product of docosahexaenoic acid (DHA) oxidation, which forms covalent adducts with different proteins. CEP-modified proteins can interact with macrophage receptor, integrin αDβ2. This study aims to compare αDβ2 binding to its physiological ligand, fibrinogen, and CEP-modified fibrinogen, which is formed during inflammation. We hypothesize that modification of fibrinogen changes its ligand-binding properties to integrin αDβ2 which can affect macrophage migration and retention. Recombinant αD I-domain and αDβ2-transfected HEK293 cells were used for the experiments. Using biolayer interferometry, we found that the affinity of αD I-domain binding to fibrinogen-CEP was higher than fibrinogen and inhibited by the …

Dyadic And Ecological Associations With Intimate Partner Violence (Ipv): Using Hierarchical Linear Modeling To Differentiate Ipv From Community Crime, Rachel Carpenter

Electronic Theses and Dissertations

Research on intimate partner violence (IPV) and intimate partner sexual violence (IPSV) has largely focused on individual and dyadic-level risk factors, but recently studies have explored how the surrounding environment is associated with IPV/IPSV. Studies that have explored community-level variables typically only use IPV/IPSV samples and do not first compare indicators of IPV/IPSV to those of general crime in those same communities. To address these gaps, this study was conducted in two parts. Data were retrieved from the Tennessee Bureau of Investigation Reporting System, County Health Rankings and Roadmaps System, the US Census Bureau, and other sources. Study 1 first …

Immersive Learning Environments For Computer Science Education, Dillon Buchanan

Electronic Theses and Dissertations

This master's thesis explores the effectiveness of an educational intervention using an interactive notebook to support and supplement instruction in a foundational-level programming course. A quantitative, quasi-experimental group comparison method was employed, where students were placed into either a control or a treatment group. Data was collected from assignment and final grades, as well as self-reported time spent using the notebook. Independent t-tests and correlation were used for data analysis. Results were inconclusive but did indicate that the intervention had a possible effect. Further studies may explore better efficacy, implementation, and satisfaction of interactive notebooks across a larger population and …

Parents' Perception Of Speech-Language Pathologists In Secondary Transition, Madelyn Hunt

Electronic Theses and Dissertations

Speech-Language Pathologists provide services to youth with Down syndrome. The purpose of this study was to (a) determine if parents are aware that speech-language pathologists can provide services to prepare their children for secondary transition; (b) identify the parents’ perceptions of the services provided by speech-language pathologists; and (c) determine if in the parents’ opinion, the speech-language pathologist provided a vital role in preparing their child for transition. Using nonprobability snowball sampling, this cross-sectional mixed-method survey study included 85 parents of youth (ages 14-22) with Down syndrome across the United States. Parents rated their experiences and described their beliefs and …

New Reports Of Smilodon And Panthera From North American Cave Sites With Reviews Of Taxonomy, Biogeography, And History, Matthew Bushell

Electronic Theses and Dissertations

In this study, three new reports of large felids from the Pleistocene are presented and discussed. A single partial left dentary from Jawbone Cave represents the first confirmed presence of S. fatalis in east Tennessee and was sampled for radiocarbon dating. Wind Tunnel and Chilly Bowl Cave are among the first records of P. onca to be identified confidently from Arkansas. Chilly Bowl Cave also produced two trackways attributable to Panthera sp., one set potentially belonging to P. atrox. In addition to the description of these remains and the caves they were found in, taxonomic histories for both S. fatalis …

Speech-Language Pathologists’ Perceptions Of The Severity Of Speech Sound Disorder, Alexis Moser

Electronic Theses and Dissertations

Objective: The purpose of this study was to determine speech-language pathologists’ (SLPs’) perceptions regarding the concept of severity of speech sound disorder (SSD).

Methods: An online survey of 40 questions was created using REDCap® and disseminated to currently practicing SLPs across the United States. A total of 296 responses were completed, and data were analyzed using descriptive statistics and coding according to grounded theory.

Results: The top five factors SLPs consider when determining SSD severity are types of errors, intelligibility, perceptual judgment, normative data, and percentile rankings. Most SLPs were unfamiliar with the International Classification of Functioning, Disability and Health …

Japanese Canadians In World War Ii: Neglected Historiography, Clayton Huff

Electronic Theses and Dissertations

During World War II, Japanese across North America were forced into internment camps out of suspicion and wartime hysteria. The historiography has chosen to focus specifically on Japanese Americans and their experiences. Academic and popular history is overwhelmingly focused on Japanese Americans, with minimal discussion ever given to Japanese Canadians or Mexicans who were interned. Tens of thousands of Japanese Canadians were interned during this tumultuous time. By ignoring their testimonies and hardships, history has forgotten these oppressed people. This thesis seeks to examine the current historiography of Japanese Canadians and compare it to that of Japanese Americans while also …

Neuronal Or Intestinal Knockdown Of C. Elegans Nadk-1 Decreases Oxygen Consumption And Reactive Oxygen Species, Jake Regan

Electronic Theses and Dissertations

Reactive oxygen species (ROS) such as H2O2 can damage cellular components and are formed as a byproduct of mitochondrial oxidative metabolism. Studies using the nematode C. elegans have found that increasing ROS during development or early adulthood can extend lifespan, while increasing ROS during later adulthood normally decreases lifespan. NADPH provides the reducing power for several cellular antioxidants and is synthesized in a two-step reaction from NAD+ with the first step being catalyzed by NAD kinase (NADK). In this study, the effects of knocking down C. elegans cytoplasmic NADK, nadk-1 globally or in a neuron or intestine-specific manner starting from …

Approaching Trans Healthcare Competency: The Implementation Of Trans Health Education For Medical Providers In Appalachia, Rebecca Altschuler

Electronic Theses and Dissertations

Barriers to competent and safe healthcare disproportionately impact people who are marginalized because of their race, ethnicity, gender, or socioeconomic status. It is well documented that transgender patients in particular experience barriers to both accessing care and receiving high quality, non-discriminatory care (Hatzenbuehler & Pachankis, 2016; James et al., 2016; Rahman et al., 2019; Safer et al., 2016). This lack of access to culturally competent healthcare services contributes to health disparities that disproportionately impact the trans community. Literature on barriers to competent care for trans patients indicates that providers experience discomfort related to their ability to provide competent care (Safer …

Preference For Abstinence-Based Recovery And Public Stigma Toward Substance Use Disorders, Diamond Meadows

Electronic Theses and Dissertations

The present study drew from the publicly available Amerispeak survey (n = 6,515) and examined public stigma towards different substances, the relationship between preferences for abstinence-based recovery and stigma toward each substance, and whether perceived dangerousness of substances moderates the relationship between preferences for abstinence-based recovery and public stigma. The results indicate that the general public has greater stigmatizing attitudes towards methamphetamine use disorder than cocaine use disorder, opioid use disorder, and alcohol use disorder. Furthermore, a preference for abstinence-based recovery was associated with greater stigmatizing attitudes toward all SUDs. The perceived dangerousness of a substance did not moderate the …

Cyclic-Di-Gmp Regulates Salmonella Typhimurium Infection Of Epithelial Cells And Macrophages, Abdulafiz Musa

Electronic Theses and Dissertations

Regulation of the bacterial second messenger cyclic-di-GMP in Salmonella Typhimurium allows it to delicately alter phenotypes to optimize invasion and survive intracellularly in epithelial cells and macrophages to become virulent and cause infection. Cyclic-di-GMP concentration is regulated by the presence of external stimuli, sensory diguanylate cyclases (DGCs) and phosphodiesterases (PDEs), and cyclic-di-GMP binding effectors. Previous studies established that maintenance of low cyclic-di-GMP concentrations is required for survival in macrophages, and that deletion of 3 active PDEs reduces this survival. Here I showed that these 3 PDEs also influenced the infection of epithelial cells. Further studies re-established the decreased survival in …

Führer And Father In Flux: Fascism And Desire In The Works Of George Saunders, Don Delillo, And David Foster Wallace, K. Tyler Wick

Electronic Theses and Dissertations

Since the end of World War II, the possibility of fascism and totalitarianism as a global threat continues to proliferate in American art and literature to the point that many individuals paradoxically desire the very things that seek to control them. Postmodern literature often portrays fascism and totalitarianism as it exists under contemporary capitalist systems as a multiplicity of discreet machines operating within objects of desire. These objects are complicated by the 24-hour news cycle and the popularity of solitary, on-demand entertainment that in turn mediates the desires and fears of a population through strict control of information. This thesis …

The Hysterical Woman: An Analysis Of Trauma In Gothic Women’S Literature And Modern Horror Film, Molly Holdway

Electronic Theses and Dissertations

This thesis explores trauma related to hysteria through themes of confinement, isolation, and motherhood in the works “The Yellow Wallpaper” (1892) by Charlotte Perkins-Gilman, The Haunting of Hill House (1959) by Shirley Jackson, and The Babadook (2014) directed by Jennifer Kent. Hysteria is explored first as a diagnosis and then as a weaponized term meant to keep women facing isolation and grief in a continuous state of oppression. The gothic and gothic horror genres display these themes through the dark nature of the human mind, which is vital in understanding the stories of the female characters discussed and the …