Digital Commons Network^™

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 …

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 …

Non-Destructive Imaging Of Phytosulfokine Trafficking In Plants Using Fiber-Optic Fluorescence Microscopy, Bernard Abakah

Electronic Theses and Dissertations

Plants secrete peptide ligands and use receptor signaling to respond to stress and control development. Understanding these phenomena is key to improving plant health and productivity for food, fiber, and energy applications. Phytosulfokine (PSK), a sulfated peptide hormone, regulates plant cell division, growth, and stress tolerance via specific phytosulfokine receptors (PSKRs). This study uses fiber-optic fluorescence microscopy to elucidate trafficking of PSK in live plants. The microscope features two-color optics and an objective lens connected to a 1-m coherent imaging fiber mounted on either a conventional upright microscope body or 5-axis positioning system (X–Y–Z plus pitch and yaw). PSK and …

The Lived Experience Of Good Therapy For Latino Clients, Rebecca Trujillo

Electronic Theses and Dissertations

The Latino population is one of the fastest growing minority populations in the United States. While there is vastness and diversity in the countries that represent Latino heritages, Latino people hold similar values that influence their lives including familismo, respeto, personalismo, and many others (Ayón & Aisenberg, 2010; Bean et. al., 2001; Bermúdez et al., 2010; Calzada et al., 2010; Elias-Juarez & Knudson-Martin, 2016). Previous researchers identified stigma regarding mental health issues in Latino communities and the role of values like familismo in contributing to the stigma of accessing mental health support outside of Latinos’ families (McGoldrick et al., 2005). …

Healthcare Workers’ Perceptions, Practices, And Knowledge Of Trauma-Informed Care In The Hospital Setting, Emily Gayle Tippens

Electronic Theses and Dissertations

Psychological trauma has become a pervasive term throughout the mental health field but has been slow to gain momentum in the healthcare field. Hospitals have always been a place where people with mental health concerns or psychosis seek help, but hospitals have historically not implemented a trauma-informed care (TIC) approach. As the mental health crisis continues to become more detrimental, trauma-informed care skills will become more valuable. This study measured the knowledge, opinions, perceptions healthcare professionals in West Texas have regarding trauma-informed care. This study hypothesized that healthcare workers in West Texas would benefit from TIC training. This study hypothesized …

Narratives Of Existence And The Narrative Existence: Ontological Unity In The Border Trilogy And Quantum Theory, Rebecca Leigh Mcintosh

Electronic Theses and Dissertations

Because the humanities and the sciences approach philosophical questions in contrasting ways, the study of literature and the study of physical science are often viewed as unrelated realms of scholarly inquiry. Science aims to provide a methodological approach for gathering knowledge about the world, while the humanities focus on criticism or analysis of cultural artifacts. However, even though the conceptual frameworks applied in scientific study and literary study are often incompatible or remarkably divergent, their methods for conceptualizing and transmitting ideas are the same, for humanity understands the world and experience of this world through narratives composed of referential metaphors. …

Evaluating The Efficacy Of The Christian Reformational Transcendental Model Of Art Criticism As A Literary Theory Through Albert Camus’S The Stranger, Elizabeth Miller

Electronic Theses and Dissertations

The subfield of art criticism and theory within Christian reformational philosophy, a descendent of the neo-Calvinist theology developed through the work of Dutch Reformer Abraham Kuyper and others, is becoming increasingly diverse. Recently, scholars such as Leland Ryken, Glenda Faye Mathes, and Philip Graham Ryken have built upon twentieth-century theologian Francis Schaeffer’s worldview approach by popularizing a transcendental model of art criticism, an approach that applies the transcendentals of truth, goodness, and beauty to works of art. However, the transcendentals, while widely discussed in the fields of philosophy, theology, and, to a lesser extent, art theory, have not been explicitly …

TíNh ThốNg NhấT Trong Sự Đa DạNg: Hanoi International Fellowship Ethnography, Ariel Marie Bloomer

Electronic Theses and Dissertations

Hanoi International Fellowship (HIF) is a multinational, multiethnic International Church (IC) in Hanoi, Vietnam. This thesis investigates how HIF constitutes unity among such lived diversity in its congregation. Chapter one reviews existing literature and provides the methodology of the study. Chapter two investigates where unity and diversity are present in HIF, focusing specifically on its mission and values, ministries, and leadership. Chapter three provides a theological basis for unity in diversity. Chapter four presents the research findings from this study. Lastly, Chapter five expresses the study’s limitations, summarizes the findings, offers suggestions to HIF and other Christian communities, recommends future …

Mental Confidence In Alzheimer's Disease, Harrison Adams

Electronic Theses and Dissertations

A simple symptom like forgetfulness can lead to a gradual, subtle decline in the individual’s sense of identity. In dementia, self-efficacy is the foundation that allow individual to prolong their capacity of independence and identity. Alzheimer’s disease (AD) is the most prominent form of dementia with tens of millions in the world currently living with Alzheimer’s disease. AD is most often associated with impaired memory, confusion, language impairment, and unpredictable, agitated, aggressive, and paranoid behavior. While there are many studies examining the quality of life in individuals with AD, there are fewer investigating the psychological effects of AD on the …

Chroma Cowboy, Jessica Gryder

Electronic Theses and Dissertations

Chroma Cowboy consists of eleven canvases wrapped in used feed sacks layered with vinyl to create brightly colored narrative scenes. Pulling from Pop Art colors, cubism shapes and a consciousness of materials, I designed this body of work to give the hard-working cowboys, ranchers, and agribusinesses a way to have their stories told to a larger audience. The strain on ranches due to generational changes, politics and environmental circumstances makes it even more important to document this way of life. I strive to further advance and inform the general public’s knowledge of the unyielding lifestyle and dedication that it takes …

Exploring The Upward Transfer Advising Experience Of First-Generation Latinx Community College Students, Lizette Avalos-Morales

Electronic Theses and Dissertations

The purpose of this qualitative study was to investigate the student experience of Latinx first-generation community college students who graduated from a community college and transferred to a 4-year university. The research examined if intrusive advising served as a mechanism to aid academic persistence despite the challenges of first-generation Latinx students. Eleven first-generation community college students who graduated from a Hispanic Serving Institution in southwest Kansas were interviewed. The thematic analysis conducted led to five themes emerging. The themes included family, meaningful relationships, belonging, independence, and embracing uncertainty. The theme of family was separated into two subthemes: family support and …

Small Gtpase Regulated Intracellular Protein Trafficking In Endothelium, Caitlin Francis

Electronic Theses and Dissertations

Intracellular protein trafficking is the movement of membrane-bound organelles to and from requisite locations within the cell. Small GTPases are a critical component to the spatiotemporal accuracy of intracellular trafficking pathways as they determine the specificity and direction of organelle transport. There exists over 150 small GTPases categorized into 5 sub-families and are employed across all cell types. Despite their universal expression and relevance to cellular function, small GTPases remain incompletely understood across tissue types. In various instances, the trafficking pathway of a particular Rab in one cell type may belong to a completely disparate pathway in another cell type. …

Uncovering Zn2+ And Ca2+ Homeostasis And Crosstalk In Primary Hippocampal Neurons, Chen Zhang

Electronic Theses and Dissertations

Zn²⁺ has been suggested to act as an intracellular signaling molecule due to its regulatory effects on numerous protein targets including enzymes, transcription factors, ion channels, neurotrophic factors, and postsynaptic scaffolding proteins. However, intracellular Zn²⁺ concentration is tightly maintained at steady levels under natural physiological conditions. Dynamic changes in intracellular Zn²⁺ concentration have only been detected in cells exposed to pathologic stimuli or upon receptor ligand binding. In the first project of my dissertation, for the first time, we revealed that developing neurons fire spontaneous and synchronous Zn²⁺ spikes at a specific time window (from 14 …

Famines, Poverty And Intergenerational Mobility In Developing Countries, Monishankar Sarkar

Electronic Theses and Dissertations

The famine has not ended yet. Though much has been done, famine is still visiting some parts of the globe, ravaging economies, taking lives, and compelling people to experience acute hunger, starvation, and associated diseases. Deadly famines have impacted parts of Asia and the Pacific at different times. China has experienced the most lethal famine in history in terms of severity and fatalities. Africa is still facing famine. There are many countries worldwide, across continents, whose population is still facing hunger and starvation on an alarming scale. Thus, famine is still relevant today.

The effects of famine have been the …

Destruction And Resiliency: Decolonizing Settler Knowledge In Native American Literature Through The Peoplehood Matrix, Renissa R. Gannie

Electronic Theses and Dissertations

This thesis explores the complex dynamics of settler colonialism and the construction of peoplehood within the Laguna Pueblo, Lakota, Jemez Pueblo, Anishinaabe, and Blackfeet culture through a comparative analysis of literary works focusing on Leslie Marmon Silko’s Ceremony, Frances Washburn’ Elsie’s Business, N. Scott Momaday’s House Made of Dawn, Gerald Vizenor’s The Heirs of Columbus, and Stephen Graham Jones’s Ledfeather; these authors employ narrative strategies to depict the destructive impacts of settler colonialism on indigenous identities and communities. Drawing upon postcolonial and indigenous literary theories, this research uses a comparative framework to analyze the diverse …

Neural And Behavioral Evolution In An Eavesdropper With A Rapidly Evolving Host, Aaron W. Wikle

Electronic Theses and Dissertations

The diversification of animal communication systems is driven by many interacting factors. Unintended receivers play an important part in this process, yet little is known about their role in signal evolution. Flies of the genus Ormia are parasitoids of crickets and rely on acoustic cues to locate hosts. In Hawaii, selection imposed by Ormia ochracea has led to recent and rapid diversification in the songs of their host. Here, we compare neural and behavioral responses of Hawaiian flies to those of an ancestral population to understand the role of parasitoid sensory and behavioral variation in the evolution of host songs. …

Surviving The Serenade: How Conflicting Natural And Sexual Selection Drove Rapid Diversification Of Mating Signals In An Insect, James H. Gallagher

Electronic Theses and Dissertations

Understanding how the early stages of sexual signal diversification proceed is of critical importance because the nature of these microevolutionary dynamics can directly shape species trajectories and macroevolutionary patterns. Unfortunately, studying signal diversification is challenging because signals involve complex interactions between behavioral, morphological, and physiological components, many of which can only be measured in real time. Here we had the opportunity to directly study this process with the recent increase in sexual signal variation in Hawaiian populations of the Pacific field cricket (Teleogryllus oceanicus). In Hawaii, male song attracts both female crickets and a deadly acoustically orienting parasitoid …

Til Valhall: The Formation Of Nordic Neopagan Identity, Religiosity, And Community At A Norwegian Heavy Metal Festival, Padraic M. Fitzgerald

Electronic Theses and Dissertations

A major draw of Nordic Neopaganism is the great degree of personal freedom practitioners have in the construction and performance of their spiritual identity. Nordic Neopaganism has no central hierarchy or unifying dogmatic system to dictate such endeavors. Instead, practitioners draw from the tradition’s body of “lore” -- the historical accounts, archaeological records, pre-Christian myths, folklore, and folk traditions from the Nordic cultural area -- to inform their religiosity. The works of visual artists, musicians, and scholar-practitioners inspired by elements of this body of lore serve to further constitute it. This lore provides the basis and inspiration for religious identity …

'They Were Known Accordingly’: The Journey Of The Land Otter Pole And Memorial Pole At The Denver Art Museum, Penske Stranger Mccormack

Electronic Theses and Dissertations

In 2019, two Kaigani Haida (Alaskan Haida) totem poles (Xaadas Gyáa’ang) were re-raised in the renovated Northwest Coast gallery of the Denver Art Museum. Lee Wallace and his family, descendants of Haida carver Dwight Wallace and Dwight’s son John Wallace, led a ceremony that publicly acknowledged the Wallace family’s connection to the two poles, reintroduced Haida cultural protocols into their care and viewing, and set the stage for future collaborations between the museum and family. This study explores the history of the poles and the intersecting forces that shaped their journey from Sukkwan, Alaska, to Denver, including shifting ideals of …

Artificial Emotional Intelligence In Socially Assistive Robots, Hojjat Abdollahi

Electronic Theses and Dissertations

Artificial Emotional Intelligence (AEI) bridges the gap between humans and machines by demonstrating empathy and affection towards each other. This is achieved by evaluating the emotional state of human users, adapting the machine’s behavior to them, and hence giving an appropriate response to those emotions. AEI is part of a larger field of studies called Affective Computing. Affective computing is the integration of artificial intelligence, psychology, robotics, biometrics, and many more fields of study. The main component in AEI and affective computing is emotion, and how we can utilize emotion to create a more natural and productive relationship between humans …

A Study Of The Cultural And Geological Environment Of The Magic Mountain Site In Golden, Colorado, Brianna K. Dalessandro

Electronic Theses and Dissertations

The Magic Mountain site, located in Golden, Colorado, has been the subject of intensive academic studies since the 1950s because of its extensive artifact assemblage and long habitation periods. The aim of this thesis was to use ground-penetrating radar, magnetometry, GIS models, and lithic analysis to further study when and how the Magic Mountain site was used during prehistoric times and contextualize a variety of hypotheses about site habitation and migratory patterns of prehistoric people in Colorado.

The results of these analyses indicate the habitation and migratory pattern of the Magic Mountain site was a periodic, but consistent, proximal visitation …

Plant Community Response To Control Of A Dominant Invader At Multiple Scales, Alexander R. B. Goetz

Electronic Theses and Dissertations

Control of invasive Tamarix spp. in riparian systems has long been a priority for management in western North America, but questions remain regarding the response of the broader plant community to different treatments. Here we summarize a series of approaches at different scales to quantify the effects of Tamarix control on characteristics of this ecosystem, including provisioning of wildlife habitat. In the first chapter we analyzed findings of the last 20 years using meta-analysis and found that although treatment has been successful in reducing Tamarix and promoting native vegetation to some extent, most literature reports very small effect sizes and …

The Evolutionary Causes And Consequences Of Mammalian Hybridization, Kelsie E. Hunnicutt

Electronic Theses and Dissertations

The natural recombination of divergent genomes within hybrid offspring provides windows through which we can study evolutionary processes and the dynamics of speciation. In this work, I use a combination of comparative and population genomics on both laboratory crosses of divergent rodent lineages and a hybrid zone of cottontail rabbits in the wild to study the causes and consequences of hybridization in mammals. Hybrid sterility is a common reproductive barrier between species that tends to preferentially manifest in the heterogametic sex and frequently genetically maps to the sex chromosomes. Thus, the sex chromosomes appear to play a special role in …

Sense Of Community And (Third) Place Among Young Adults In Permanent Supportive Housing: A Mixed-Methods Inquiry, Danielle Maude Littman

Electronic Theses and Dissertations

Unhoused young people have often endured co-occurring experiences of marginalization, including long-term abuse and neglect from systems which have failed to support them. Permanent Supportive Housing (PSH) is a formal intervention which seeks to offer stability and support to young people. This three-manuscript dissertation uses community-engaged mixed methods to understand sense of community, sense of place, and third places among young adults in PSH in Grand Junction, Colorado.

The first manuscript used longitudinal mixed methods to understand how PSH residents’ (N = 27) sense of community shifts over 1.5 years of living in PSH. We found that residents’ sense …

Black Quarterback, White Masks: A Critical Analysis Of The Nfl Anthem Protests, Cody Walizer

Electronic Theses and Dissertations

The NFL anthem protests were and are an important cultural moment and social movement. The widespread emulation of the protest, and the adoption of the kneel as a symbol of unity, reverence, and silent objection demonstrates the protests’ continued relevance. This dissertation critically analyzes Colin Kaepernick’s protest through the lens of racial rhetorical criticism (Flores, 2016) and Fanonian communication studies (Towns, 2020). Through the case studies of David Brooks, Lee Siegel, and Colin Fleming, and their New York Times opinion pieces on Kaepernick from 2016-17, this study argues that the common discourses surrounding the protest exist within the strategic rhetoric …

Fabrication And Characterization Of Amlodipine Besylate Based Sub-Cutaneous Implants: Fabricated With The Help Of Hot Melt Extrusion, Kshitij Chitnis

Electronic Theses and Dissertations

Hypertension (HTN) can lead to heart attack, cardiac arrest, or coronary heart disease, and eventually death without proper treatment. Amlodipine Besylate (AMB) was approved by, US Food and Drug Administration in 1987, as a monotherapy for the management of HTN. AMB is commercially available in tablet (2.5, 5, and 10 mg) and solution (1mg/mL) dosage forms. However, adherence to the properly prescribed dosage form is critical and difficult for patients with chronic diseases such as HTN to prevent illness progression and death. The objective of the study was to develop AMB-loaded subcutaneous implants to reduce the frequency of administration, thus, …

The Enduring Tradition Of Toxic Masculinity In French Literature, Hailey Caroline Kaim

Electronic Theses and Dissertations

Toxic masculinity, the modern definition has given a concise explanation to what French literature has been relaying to audiences for centuries. This thesis will explore how toxic masculinity is seen in French literature through five time periods: the Medieval era, 17th, 18th, 20th, and 21st century. Introducing toxic masculinity is provided by a modern definition, biological evidence, and evaluation with society’s definition of masculinity. The Medieval era will investigate two short stories of courtly love that provide readers with classical examples of toxic masculinity that both men and women displayed. Venturing into the 17th and 18th centuries, plays brought the …

Harness Therapeutic Potential Of Immune Responses: Molecular Characterization And Targeted Delivery, Nan Ji

Electronic Theses and Dissertations

The immune system plays a crucial role in protecting the body from harmful pathogens and cancer cells and maintaining tissue homeostasis. Immunotherapy has shown significant potential in treating various diseases by harnessing the therapeutic potential of immune responses through the targeting of different immune cells, receptors, and signaling pathways. This dissertation investigated two immune modulators for their immune-enhancing potential.In the first chapter, the components of innate immunity are introduced. In the second chapter, Immulina, a commercially available extract of Arthrospira platensis enriched with Braun-type proteins, was studied for its immunostimulatory effect in mouse bone marrow-derived dendritic cells and macrophages. The …