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Combinatorial Problems On The Integers: Colorings, Games, And Permutations, Collier Gaiser

Electronic Theses and Dissertations

This dissertation consists of several combinatorial problems on the integers. These problems fit inside the areas of extremal combinatorics and enumerative combinatorics.

We first study monochromatic solutions to equations when integers are colored with finitely many colors in Chapter 2. By looking at subsets of {1, 2, . . . , n} whose least common multiple is small, we improved a result of Brown and Rödl on the smallest integer n such that every 2-coloring of {1, 2, . . . , n} has a monochromatic solution to equations with unit fractions. Using a recent result of Boza, …

Evidence Of Climatic Influence On Subsistence Strategies At Sage Hen Springs, Nevada, Andrew Rogers

Electronic Theses and Dissertations

Models of settlement patterns in the northwest Great Basin describe a decrease in residential mobility, intensified use of upland spring ecozones, and an increase in diet breadth during the Middle and Late Archaic. Here, I present data collected from the Sage Hen Springs site in northwestern Nevada during a Phase II testing project conducted by the BLM and an analysis of these data focusing on patterns of subsistence and mobility strategies throughout the Archaic. Results of this analysis support existing models of lifeways in the northwest Great Basin at the small scale and point to climatic factors as influences on …

Reconciling Moral Dissonance: A Framework For Re-Integrating Moral Orientation With Life Agency During Warfighters’ Struggles With Military Moral Injury, Jeffrey L. Zust

Electronic Theses and Dissertations

This dissertation uses case studies to critically examine the Three Mirror Model (TMM) as a framework for understanding the formation and healing of Military Moral Injury (MMI). I adapt the work of Stephen Brookfield and Neal Krause to evaluate using the TMM as a methodology for dealing with the complex issues of MMI within a military deployment cycle (training, warfighting, and healing) (Brookfield 2012, 2017; Krause 2022). Specifically, I use theorists, researchers, healers, and warfighters as key stakeholders to identify and critically examine the intersections of disciplines and the subsets of models where warfighters’ moral orientations and moral agency form …

Capturing Latent Abilities And Latent Capacities Of Professional Golfers Using Nonlinear Mixed Effects Growth Modeling, Mac Wetherbee

Electronic Theses and Dissertations

This study demonstrates an effective and innovative approach to measuring the latent athletic abilities and capacities of professional golfers. I used nonlinear mixed effects growth modeling (e.g., Dynamic Measurement Modeling) to measure professional golfers’ ability levels and capacities for improvement. I accomplished this using a two-stage modeling approach. First, a crossed linear mixed effects model estimated each player’s ability level in each year. In the second stage, I used the results from the first stage to estimate several candidate nonlinear growth trajectories for players’ abilities over time. The quadratic growth trajectory was the best-fitting of these trajectories and was used …

Picturesque Portraiture: The Composition Of Reality In Hawthorne, Melville, And James, Angela Michael Gattuso Densmore

Electronic Theses and Dissertations

Throughout the nineteenth century, American artists were tangled in debates regarding the representation of reality. The Hudson River School of picturesque landscape painters tackled this dilemma with a compromise formula which used the real objects of nature to create ideal scenes. This dissertation applies the same picturesque formula to select examples of literary portraiture, studied under the concept of “picturesque portraiture.” Whereas the Hudson River compromise resulted in an ideal perception of reality, however, the picturesque portraits composed by nineteenth-century authors Nathaniel Hawthorne, Herman Melville, and Henry James attempt to invoke a non-idealized “actual” reality of the portrait subject’s person …

Bridging The Geometric And Quantum Information Of Structured Light, Andrew Alexander Voitiv

Electronic Theses and Dissertations

In this Dissertation, we review the several advances we have developed for preparing and measuring the geometric and quantum information of structured light. The geometric phase acts as a memory of transformations undertaken by physical processes; quantum entanglement underpins quantum information science which explores the theoretical and technological applications of nonclassical correlations. Beginning with classical light, we demonstrate novel experiments and measurements of geometric phase that are enabled by spatially structuring laser beams. We then extend those concepts to complement the richer possibilities within quantum optics. Our work covers new abilities in tailoring and measuring the phase content of spatially-structured …

Digital Dialogue: Emancipatory Dialogical Practices In Virtual Collaborative Problem-Based Learning, Chelsie Ruge

Electronic Theses and Dissertations

Societal shifts increasingly demand that people work across social and geographic borders, often virtually, to solve complex problems in the areas of education, environment, healthcare, poverty, technology innovation and ethics, and more. This collaboration requires critical and emancipatory dialogue and problem-solving.

This qualitative multiple case study examined two online professional studies graduate-level courses that employed collaborative problem-based learning to engage with social-justice related themes, one that explored inclusive educational practices, and one that explored the negotiation of global environmental treaties. The purpose of this study was to investigate how students engaged in emancipatory dialogical practices and determine the factors that …

Sources Of Sexual And Romantic Education: Associations With Sexual Minority Men’S Sexual Experiences And Romantic Relationship Quality, Charlie Huntington

Electronic Theses and Dissertations

Individuals with sexual minority identities experience a variety of poorer mental and physical health outcomes, including those related to sexual and romantic quality, relative to heterosexual individuals (Beaulieu et al., 2017; CDC, 2021). These poorer romantic, sexual, and psychological outcomes may be attributable in part to lacking access to affirmative and relevant modeling of sexual minority experiences, such as through sex education (Gillespie et al., 2022; Keiser et al., 2019). This study aimed to understand how sexual minority men learn – in ways potentially both helpful and unhelpful – about romantic relationships and sexual activity, and how these experiences are …

Culturally Responsive Coaching: Supervision With A Cultural Lens, Jouanna Crossland-Wells

Electronic Theses and Dissertations

Culturally Responsive Practices (CRP) are a focal point for many districts across the country. The emphasis of CRP is on how the institution enacts policies and practices for the benefit of the students they serve. This study views CRP from a different lens. The focus of this study is to 1.) center the voice of Black teachers and 2.) explore culturally responsive practices for the support and edification of the teacher from their coach/supervisor. The eight Black teacher participants and their instructional coaches engaged in interviews discussing current coaching models and the dynamics of their coaching relationships.

The relevant findings …

The Elephant In The Baithak: Tabla And Audio Technological Discourse, Tyler Thom

Electronic Theses and Dissertations

This thesis discusses how power, status, and performance practices play out between performers of tabla (North Indian hand drums) and audio engineers. To do so, I analyze engineer, performer, and music critic discourse surrounding tabla performances and technology to place it within a broader scholarly debate regarding recording technology, cultural/technological capital, technological determinism, and agency. I extend Christopher Scales’s (2012) concept of “recording culture” to “live sound culture,” or the behaviors, power struggles, and labor surrounding tabla mic’ing and amplification. I argue that audio technology separates the artist’s sound into several domains of control (stage, hall, recording, playback), each controlled …

Resisting The Historical And Geographical “Other”: The Role Of Expertise In Video Game Music, Tommy Dainko

Electronic Theses and Dissertations

Video games create rich, virtual worlds for players to explore. Game developers have often utilized exoticism, allowing players to experience the “Other” from the comfort of home. Music is a powerful tool to evoke Otherness and can reinforce stereotypes about the past and different cultures. This thesis looks at recent games where developers have collaborated with expert musicians either from the culture depicted or with expertise in historical performance practices. I document two purposes these collaborations can serve. First, the use of expert musicians creates a veneer of authenticity allowing developers to market the games as “authentic” experiences. Second, these …

Exploring The Experiences Of Hiv Positive Pregnant Women On Prevention Of Vertical Transmission Of Hiv/Aids In Rural Malawi, Gertrude Finyiza

Electronic Theses and Dissertations

Mother-to-child transmission (MTCT) of human immunodeficiency virus (HIV) continues to be the primary conduct that HIV is transmitted to children worldwide. The problem of HIV/acquired immunodeficiency syndrome (AIDS) is having a great impact on the world's children. The prevalence of HIV/AIDS in Malawi continues to be a serious public health issue, especially for expectant mothers. The health outcomes of mothers and children remain significantly threatened by vertical HIV transmission, even with improvements in preventive and treatment efforts. The purpose of this thesis was to explore the experiences of HIV-positive pregnant women in Malawi. I conducted semi structured interviews with thirteen …

Paradoxes And Potential Of Tourism Development In Nicaragua, Cody J. Silveira

Electronic Theses and Dissertations

This dissertation research evaluates the successes and challenges of tourism integration and expansion as both a broad human development strategy and a catalyst for local populations to achieve greater economic and social opportunities. The country of Nicaragua serves as the primary case study for such an evaluation due to its relatively recent promotion and expansion of tourism through government led incentives and oversight. As a case study, Nicaragua is a country whose tourism industry remains nascent, yet commands great economic potential and influence, which can serve as an example for future tourism development initiatives for developing countries in the region …

Comparing The Preparation Of Youth Services Librarians To Their On-The-Ground Experiences: A Grounded Theory Study Incorporating Criticism And Connoisseurship, Anne Holland

Electronic Theses and Dissertations

The purpose of this study was to better understand the on-the-ground preparation of youth services librarians, in contrast to their professional training in Master’s of Library Science (MLIS) programs. Classic Grounded Theory was the predominant methodology for this qualitative study, and elements of Criticism and Connoisseurship were also utilized. Document review, interviews, and journaling activities with ten participants were the primary methods of data collection. Key findings from this dissertation include a grounded theory explaining the current state of preparation for youth services librarianship, and multiple avenues for further study.

Navigating University Of Denver As A Latinx Male-Identifying Undergraduate Student, Quisi Rodriguez-Oregel

Electronic Theses and Dissertations

Students of color continuously persist at a lower rate than their white counterparts in higher education. Particularly for Latinx males, the number is lower than Latinx women. Universities have incorporated Diversity, Equity, and Inclusion (DEI) strategies to focus on their diverse student population and address issues of race, ethnicity, class, and gender. Despite these efforts, low retention rates for Latinx males persist. This study explores how Latinx male undergraduate students navigate a predominantly white institution as well as explore some of the challenges of DEI efforts at that institution. I conducted participant observations at the University of Denver (DU) and …

The Foundations Of Civilian Supremacy: Civil-Military Relations During The American Civil War, Riley Callahan

Electronic Theses and Dissertations

The American Civil War was the defining event that shaped civil-military relations in the United States. This master's thesis explores the multifaceted dynamics between civilian and military leadership during this crucial period in American history. It examines the relationship between civilian political authority and the military establishment, while incorporating the related roles of Congress, public opinion and international influences. The research explores the decision-making processes, the balance of power, and the impact of leadership styles and personalities on civil-military interactions during times of armed conflict.

This thesis explores in particular the significance of President Lincoln's leadership, his ability to manage …

Leadership In Extreme Contexts: An Emerging Typology, Ashley Williams

Electronic Theses and Dissertations

This study investigates the relationship between leadership and extreme contexts through the lens of rural hospitals facing environmental jolts. Rural hospitals offer a unique setting for this research, given their inherent geographic isolation, lack of resources, and the critical role these facilities play in their communities. Through a qualitative analysis of interviews with Chief Executive Officers of rural hospitals, this research takes a grounded approach to build theory surrounding how leadership not only shapes but is shaped by extreme contexts and environmental jolts. The research results in four primary contributions. Namely, this study extends existing typologies on leadership in extreme …

The Effects Of Covid-19 On Asian American Perception Of Mental Health, Emily Tseung

Electronic Theses and Dissertations

This study describes a qualitative study using a grounded theory, constructivist approach, which sampled (N = 6) Asian American college students who lived in the United States during the peak of the COVID-19 pandemic. Research shows that COVID significantly impacted the Asian American perception of mental health, including mental health help- seeking behaviors and discrimination experienced. The long-term effects of this are still largely unknown. In depth, semi-structured interviews were used to explore the lived experiences of these Asian Americans. Qualitative analysis revealed thematic differences for the following themes: (a) experience with mental illness, (b) mental health help- seeking …

An Exploration Of Rural Advanced Placement Differentiation, Kristin M. Shapiro

Electronic Theses and Dissertations

Advanced Placement classes are introductory college courses taught in high school. Over 60% of all secondary gifted programs report utilizing AP classes as part of their program offerings (Callahan et al., 2017). Despite the prevalence of AP courses, there is no exact match between this particular type of programming and the needs of gifted learners (Gallagher, 2008). The use and occurrence of AP programs across the United States have not been equal, with subsequent underrepresentation of underserved groups, including rural students (Gagnon & Mattingly, 2016) in AP classes. Rural gifted students benefit from all the same classroom differentiation techniques that …

Conducting Culturally Responsive, Strengths-Based Assessment In Schools, Eileen Cullen

Electronic Theses and Dissertations

Special education assessment has a significant impact on the lives of children with disabilities and their families. However, traditional assessment practices have been critiqued as being deficit-based, overly focused on “labeling” students, and failing to provide a holistic understanding of the student. Assessment models such as strengths-based assessment (SBA) and culturally responsive assessment (CRA), have potential to addresses these critiques and be more appropriate for the growingly diverse school population. Despite this, these models of assessment are under studied and there is a lack of clear guidance for how practitioners should implement them.

In these manuscripts, CRA and SBA are …

A Geospatial And Machine Learning Framework For Forecasting Ground Level Ozone Pollution, William J. Keenan

Electronic Theses and Dissertations

The major detrimental health effects of ground-level ozone (GLO) pollution make it imperative that both policy makers and ordinary citizens have access to high accuracy, high-resolution forecasts of their local area. Recently, advancements in computing power have made it possible to apply artificial intelligence (AI) techniques to a variety of big data modelling problems, including GLO forecasting and estimation. Of these AI methods, deep neural networks (DNN) have demonstrated the highest accuracy due to their ability extract non-linear relationships from high dimensional, noisy data inputs.

This research effort uses novel data sources, namely NOAA’s High Resolution Rapid Refresh (HRRR) meteorology …

The Applications And Implications Of A (Re)Humanizing Praxis For Early Childhood Educational Contexts, Kristopher M. Tetzlaff

Electronic Theses and Dissertations

Dehumanizing preschool policies and practices and a lack of access to affordable, (re)humanizing early childhood educative experiences threatens to exacerbate the opportunity gap and deleterious preschool-to-prison pipeline. The purpose of this study was threefold; foremost, it aspired to elevate the role and power of critical resource pedagogies in individual and collective liberation. Second, it aimed to identify vital pedagogical and programmatic assets that advance the pursuit of mutual humanization in early childhood educational settings. Third, it sought to discern and address the pedagogical and programmatic limitations and systemic barriers that otherwise impede access to high quality early childhood programming. In …

Institutional And Structural Evolution Of The U.S. Financial System 1945-2023: The Long-Wave Financial Cycle And The Role Of Thwarting Mechanisms, Shaun K. Brog

Electronic Theses and Dissertations

This thesis develops a theoretical framework that attempts to explain the dynamic interactions that lead to episodes of severe financial instability. Adapting Minsky’s Financial Instability Hypothesis to the specific characteristics of financial intermediaries and building on Ferri and Minsky’s ideas regarding the role of thwarting institutions, I propose that financial fragility is the result of a long-wave cycle in financial relations characterized by significant institutional and structural evolution within the U.S. financial system. This evolution results in a preponderance of financial activity undertaken outside the regulatory umbrella while margins-of-safety are eroded, newly innovated financial assets proliferate, and financial intermediaries become …

Evaluating The Effect Of Domain-Specific Large Language Models On Question And Response, Phillip D. Crippen

Electronic Theses and Dissertations

Large Language Models have emerged to great fanfare in the Information Technology market. Business and Information Technology leaders are currently exploring ways to apply these models to assist their organizations in executing business processes and generating innovation. Software vendors, consultants, and academics promote various approaches to making Large Language Models work effectively for business. However, little academic literature is available today that quantifies the degree of improvement possible with these domain-specific approaches over the standard capabilities of generalized Large Language Models.

The study seeks to quantify the benefits of one approach, Retrieval Augmented Generation. The study uses a collection of …

Changing The Narrative: Student Empowerment In Unequal School Contexts, Stephanie A. Nisle-Mikos

Electronic Theses and Dissertations

Educational experiences affect a wide variety of life outcomes for individuals. The type of education an individual receives influences their occupation, the neighborhood in which they live, and even their risk of mortality (National Research Council, 2013; Sasson, 2016). In particular, the life trajectories of students who attend high-poverty schools are not the same as youth who attend schools with greater resources (National Center for Education Statistics [NCES], 2013; Taylor, 2005). In this dissertation, I provide a brief background on current rates of disproportionality in education and examine how specific theoretical constructs and educational policies may be used to explain …

The Role Of Care Practices, Mutual Aid, And Racial Formation In Black Newcomer Practitioners’ Lived Experience Within Organizations: A Critical Qualitative Inquiry, Annie Zean Dunbar

Electronic Theses and Dissertations

Black newcomers, defined as people who have migrated to the United States regardless of legal status, are one of the fastest-growing immigrant groups. (Morgan-Trostle et al., 2016). Within this population, a small percentage work within the social service sector with other migrants. Using critical qualitative methods, a critical phenomenological methodology and semi-structured interviews, a sample of 17 participants were asked about their experiences of living and working in the U.S. social service sector. The study uses racial formation theory (Omi & Winant, 2014) to conceptualize how participants experienced their racial identity formation and how racism shapes their personal and professional …

How Well Do Nature-Based Solutions To Climate Change Address Gender Equity?, Stephanie Efua Yamoah

Electronic Theses and Dissertations

As the climate crisis continues to deepen, there have been calls for adaptation and mitigation approaches that rely on nature-based solutions. These solutions are approaches that offer the potential to reduce and remove greenhouse gas emissions. Examples include forest restoration, coastal wetland conservation, and no-till agriculture, among other practices. In this thesis, I employ an intersectional feminist political ecology perspective to critically examine the integration of gender equity within such nature-based solutions. I make two interrelated arguments using a qualitative methodology and an intensive case study of three projects in Ghana. First, I argue that women’s participation in nature-based solutions …

Progressive Paradox In Political Rhetoric: The Hart-Celler Immigration Act Of 1965, Amanda Rolston Henderson

Electronic Theses and Dissertations

This dissertation investigates the interplay between U.S. norms for inclusion, the embedded role of religion within these norms, and how political rhetoric challenges or sustains them. Using a historical lens, I outline key moments in U.S. history, unravel central ideologies entrenched in U.S. narratives, and illuminate the ideographic function of the key concepts land, family, and work. These terms serve as conduits for conveying complex systems of meaning, which are entrenched in societal assumptions and concretized through political discourse and action.

These dynamics are demonstrated in a case study of the discourse surrounding the Hart-Celler Immigration Act …

Balancing Act: Navigating Employee Autonomy And Neglect, Lekshmy Sankar

Electronic Theses and Dissertations

The fine line between granting employee autonomy and inadvertently falling into patterns of neglect presents a complex challenge within organizational leadership. This study explores the question: What do leaders perceive as effective strategies for providing autonomy to remote employees without being perceived as neglecting them? Employee autonomy empowers employees to make decisions, while leader neglect towards subordinates (LNS) is defined through this research as a gradual decrease in a leader's interest or effort in sustaining positive relationships with employees. Navigating this balance is crucial to maintaining employee engagement.

This qualitative study uncovered nuanced perceptions on this issue using a grounded …

Understanding The Nuances Of Transit Accessibility: Temporal And Spatial Resolution, And Neoliberalism, Joe Chestnut

Electronic Theses and Dissertations

This dissertation explores accessibility via public transit through several lenses. In doing so, some of the lesser known nuances of accessibility are better understood. These nuances are explored in several ways. First, various demographic variables and their relationship to accessibility to jobs via public transit are modeled at a fine spatial resolution in an exploratory analysis across several cities in the United States. Next, temporal and spatial resolution and their impacts on accessibility to jobs via public transit are analyzed and quantified in several cities across the United States. Finally, the relationship between neoliberalism and public transit accessibility is explored …