Digital Commons Network^™

Profitable, Alternative Income Generation And Improved Quality Of Life Among Global Beekeepers, Chris Honeycutt

Electronic Theses and Dissertations

Interventions that promote alternative income generation (AIG) to address social determinants of health are associated with increased household income and improved health outcomes. Organizations have used beekeeping to address poverty and other development goals with mixed outcomes. Beekeeping presents a viable option to promote AIG. Organizations increase their risk of failing to achieve positive outcomes when beekeeping interventions are inadequate. This project aims to develop an organizational assessment tool that measures organizational position in relation to evidence-based factors for income generation and improved quality of life among global beekeepers. The assessment is organized into seven domains that correspond with PRECEDE-PROCEED …

Advising Minority Pre-Med Students: Perceptions Of Pre-Med Advisors At Institutions In The Southeastern Association Of Advisors In The Health Professions Region, Victoria Street

Electronic Theses and Dissertations

The purpose of this qualitative study was to explore pre-medical advisors’ perceptions on their role in the pathway to medicine for students historically underrepresented in medicine (URiM) and to gain insight into barriers these students face. While a small amount of research exists on the perspective of URiM pre-medical students on the pathway to medicine, no analysis has been conducted on the role pre-medical advisors play. The underlying framework of this research study focused on the experience of advisors through the lens of academic advising approaches, self-authorship theory, and capital theory to make a strong collective framework to begin understanding …

Finding The Path To College Completion: A Qualitative Exploration Of The Experiences Of First-Generation Students At A Technical College In Rural West Tennessee, Jacquene Rainey

Electronic Theses and Dissertations

The purpose of this qualitative study focused on the experiences of first-generation students attending a technical college in rural West Tennessee. The results of this study may identify barriers faced by students from these special populations and may also provide insight into the support systems that motivate these students to persevere. Although significant research has been conducted on first-generation and underrepresented students attending community colleges and four-year universities, there is a gap in the published literature pertaining to the lived experiences of students attending technical colleges, especially those living in rural areas.

First-generation college students face many challenges as they …

Foundation Of Empire In The Tudor Era: Further Explorations Of The Northeast And Northwest Passages, Richard H. Lloyd Iii

Electronic Theses and Dissertations

The British Empire is often traced back to the late sixteenth century and Sir Francis Drake's circumnavigation, but Tudor monarchs had been eyeing expansion beyond Britain long before Drake. John Cabot, commissioned by Henry VII in the late fifteenth century, became the first European to step foot in the Americas in five centuries. Half a century later, adventurers like Richard Chancellor and Sir Hugh Willoughby sought a possible Northeast Passage to Asia, interacting with the Sami and Russians along the way. These expeditions and others like them, funded by the English monarchy and merchants, aimed to expand the kingdom’s economic …

The Modern Classrooms Project: Student Efficacy And Achievement, Rhiannon Dunn

Electronic Theses and Dissertations

This quasi-experimental, quantitative study was completed to determine if a Modern Classroom approach to teaching had a significant relationship with student self-reported efficacy measures and end-of-course test data when compared to classrooms taught with traditional instructional methods as well as if there was a difference in results for Honors and College Prep-level students. Participants were students enrolled in a ninth-grade English classroom in a suburban school in East Tennessee. The study focused on survey data collected from both types of classroom at the mid-point of the semester and then from the Modern Classrooms participants at the end of the semester, …

Emerging Tick-Borne Diseases In Northeast Tennessee, Jacob Schultz

Electronic Theses and Dissertations

Tick populations have been immigrating into northeast Tennessee from east Tennessee, Kentucky, Virginia, and North Carolina. Counties in states bordering northeast Tennessee harbor tick species associated with human illness. Human diseases transmitted by ticks include ehrlichiosis, spotted fever rickettsial group diseases, tularemia, anaplasmosis, babesiosis, Lyme disease, alpha-gal syndrome, Heartland virus, Powassan virus, and southern tick-associated rash illness (STARI). These diseases cause morbidity and mortality in human populations and may pose a high risk to individuals, wildlife, and livestock. The Cherokee National Forest covering the east Tennessee border provides a permissible environment for ticks to immigrate and thrive. Residents of northeast …

Cardiovascular Disease In Central Appalachia, An Exploratory Study Of Behavioral, Community, And Patient-Centered Care Influences, Kristy Gagnon

Electronic Theses and Dissertations

The Central Appalachian region of the United States disproportionately experiences higher rates of cardiovascular diseases (CVD) and associated risk factors. Primary risk factors for CVD include hypertension, hypercholesterolemia, and tobacco use, all of which have the potential to be mitigated through lifestyle behavior changes. Dietary and physical activity practices are the two main driving forces for the development of hypertension and hypercholesterolemia, while tobacco use is a behavioral choice on its own. Subsequentially, shifting lifestyle choices to emphasize healthier living has the potential to reduce CVDs within the Central Appalachian region. Considering behavioral choices are not made in isolation and …

The Reinforcement Enhancing Effects Of Delta-9-Tetrahyrdrocannabinol (Thc) In Male And Female Rats, Kynah Walston

Electronic Theses and Dissertations

Cannabis is widely consumed by humans for pharmacological effects that are mediated by THC, though there is little evidence that THC is a primary reinforcer in non-human animal models. We hypothesized that THC may have potent reinforcement enhancing effects, comparable to other drugs (e.g., nicotine and caffeine) which are also widely consumed by humans, but difficult to establish as primary reinforcers in non-humans. In three experiments with male and female rats saccharin (SACC) or a visual stimulus (VS) served as reinforcers for operant behavior. We explored several pharmacological parameters of THC on responding for SACC or VS, including THC dose, …

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 …

The P-Adic Numbers And Conic Sections, Abdelhadi Zaoui

Electronic Theses and Dissertations

This thesis introduces the p-adic metric on the rational numbers. We then present the basic properties of this metric. Using this metric, we explore conic sections, viewed as equidistant sets. Lastly, we move on the sequences and series, and from there, we define p-adic expansions and the analytic completion of Q with respect to the p-adic metric, which leads to exploring some arithmetic properties of Qp.

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 …

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 …

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 …

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. …

Building Resilience: A Mixed Methods Exploration Of Head Start Teachers Coping During The Covid-19 Pandemic, Ehichoya Edokhamhen

Electronic Theses and Dissertations

The purpose of this study was to explore the resiliency of Head Start teachers during the COVID-19 pandemic. The study explored the role social support (as an external factor of resilience) and self-efficacy (as an internal factor of resilience) played in the resilience of Head Start teachers during the COVID-19 pandemic. This study employed a sequential explanatory mixed methods design involving two phases: a quantitative and a qualitative phase. Participants in this study were 99 teachers in rural eastern Tennessee and some rural parts of Virginia, North Carolina, and New Mexico, who were Head Start teachers during the COVID-19 pandemic. …

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 …

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, …

Vibroacoustic Response Of The Tympanic Membrane To Hyoid-Borne Sound Generated During Echolocation In Bats, Chelsie Snipes

Electronic Theses and Dissertations

The hyoid apparatus in laryngeally echolocating bats forms a mechanical connection between the larynx and auditory bullae and has been hypothesized to transfer the outgoing echolocation call to the middle ear during echolocation call emission. We used µCT data to build models of the hyoid apparatus and middle ear from six species of bats and used finite element modeling (FEM) to measure the vibroacoustic response of the tympanic membrane due to hyoid-borne sound generated during echolocation. We found that hyoid-borne sound in all six species stimulated the eardrum within a range likely heard by bats. Although there were minor differences …

Geophysical, Archaeological, And Geospatial Investigations At Presidio Los Adaes, 18th Century Capital Of Spanish Texas, Robert Linam

Electronic Theses and Dissertations

Presidio Los Adaes (16NA16), located in present day northwest Louisiana, served as the capital of Spanish Texas for much of the 18th century. Maps and historical documents provide architectural plans for the fort and other buildings on the site but differ in the size and location of several buildings. In 2009, a geophysical survey of the site with ground penetrating radar, magnetometry, electrical resistance, and electromagnetic induction showed good preservation of architectural foundations. Visual assessment of the maps and geophysical data, information from archaeological excavations, and spatial statistics suggests that the fort was originally built as specified by the architect, …

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 …

Functional Screening Of Lysosomal Storage Disorder Genes Identifies Modifiers Of Alpha-Synuclein Neurotoxicity, Carl Grant Mangleburg, Timothy Wu, Tom V Lee, Yarong Li, Duc Duong, Bridget Phillips, Carlos Cruchaga, Genevera I Allen, Nicholas T Seyfried, Ismael Al-Ramahi, Juan Botas, Joshua M Shulman

Faculty, Staff and Students Publications

Heterozygous variants in the glucocerebrosidase (GBA) gene are common and potent risk factors for Parkinson's disease (PD). GBA also causes the autosomal recessive lysosomal storage disorder (LSD), Gaucher disease, and emerging evidence from human genetics implicates many other LSD genes in PD susceptibility. We have systemically tested 86 conserved fly homologs of 37 human LSD genes for requirements in the aging adult Drosophila brain and for potential genetic interactions with neurodegeneration caused by α-synuclein (αSyn), which forms Lewy body pathology in PD. Our screen identifies 15 genetic enhancers of αSyn-induced progressive locomotor dysfunction, including knockdown of fly homologs of GBA …

Techsumbot: A Stack Overflow Answer Summarization Tool For Technical Query, Chengran Yang, Bowen Xu, Jiakun Liu, David Lo

Research Collection School Of Computing and Information Systems

Stack Overflow is a popular platform for developers to seek solutions to programming-related problems. However, prior studies identified that developers may suffer from the redundant, useless, and incomplete information retrieved by the Stack Overflow search engine. To help developers better utilize the Stack Overflow knowledge, researchers proposed tools to summarize answers to a Stack Overflow question. However, existing tools use hand-craft features to assess the usefulness of each answer sentence and fail to remove semantically redundant information in the result. Besides, existing tools only focus on a certain programming language and cannot retrieve up-to-date new posted knowledge from Stack Overflow. …

Chronos: Time-Aware Zero-Shot Identification Of Libraries From Vulnerability Reports, Yunbo Lyu, Thanh Le Cong, Hong Jin Kang, Ratnadira Widyasari, Zhipeng Zhao, Xuan-Bach Dinh Le, Ming Li, David Lo

Research Collection School Of Computing and Information Systems

Tools that alert developers about library vulnerabilities depend on accurate, up-to-date vulnerability databases which are maintained by security researchers. These databases record the libraries related to each vulnerability. However, the vulnerability reports may not explicitly list every library and human analysis is required to determine all the relevant libraries. Human analysis may be slow and expensive, which motivates the need for automated approaches. Researchers and practitioners have proposed to automatically identify libraries from vulnerability reports using extreme multi-label learning (XML). While state-of-the-art XML techniques showed promising performance, their experimental settings do not practically fit what happens in reality. Previous studies …

Editorial: Innovative Shared Transportation, Marco Nie, Hai Wang, Wai Yuen Szeto

Research Collection School Of Computing and Information Systems

Recent technological developments—mobile computing, autonomous driving, alternative fuel vehicles, and blockchain, to name a few—have enabled numerous innovations in mobility, transportation, and logistics services. They offer unprecedented opportunities to transform conventional transportation systems, for both personal travel and freight logistics, with novel solutions. Of these solutions, those built on the emerging concept of shared economy, such as Uber, Didi, and Cargostream, have received much attention recently. The rapidly expanding scope of shared transportation services now includes ride-sourcing, ridesharing, car sharing, hitch service, flexible paratransit, shared freight delivery, shared logistics, bike sharing, shared last-mile service, parking space sharing, and so on.

A Study Of Variable-Role-Based Feature Enrichment In Neural Models Of Code, Aftab. Hussain, Md. Rafiqul Islam. Rabin, Bowen. Xu, David Lo, Mohammad Amin. Alipour

Research Collection School Of Computing and Information Systems

Although deep neural models substantially reduce the overhead of feature engineering, the features readily available in the inputs might significantly impact training cost and the performance of the models. In this paper, we explore the impact of an unsuperivsed feature enrichment approach based on variable roles on the performance of neural models of code. The notion of variable roles (as introduced in the works of Sajaniemi et al. [1], [2]) has been found to help students' abilities in programming. In this paper, we investigate if this notion would improve the performance of neural models of code. To the best of …

Niche: A Curated Dataset Of Engineered Machine Learning Projects In Python, Ratnadira Widyasari, Zhou Yang, Ferdian Thung, Sheng Qin Sim, Fiona Wee, Camellia Lok, Jack Phan, Haodi Qi, Constance Tan, David Lo, David Lo

Research Collection School Of Computing and Information Systems

Machine learning (ML) has gained much attention and has been incorporated into our daily lives. While there are numerous publicly available ML projects on open source platforms such as GitHub, there have been limited attempts in filtering those projects to curate ML projects of high quality. The limited availability of such a high-quality dataset poses an obstacle to understanding ML projects. To help clear this obstacle, we present NICHE, a manually labelled dataset consisting of 572 ML projects. Based on the evidence of good software engineering practices, we label 441 of these projects as engineered and 131 as non-engineered. This …