Digital Commons Network^™

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 …

Effect Of Oxidation Of Graphene On Agglomeration And The Mechanical Properties Of Thermosetting Resins, Matthew A. Reil

Electronic Theses and Dissertations

Thermosetting resins are used extensively worldwide in applications ranging from adhesives to structural components. However, these resins generally fail in a brittle fracture mode which is undesirable in most situations. Graphene (G) and its derivatives have been considered as additives to epoxy for material property enhancement and varied results have been reported in the literature. In this work, the effects of the oxidation of G to graphene oxide (GO) on polymer interactions and plate agglomeration were studied by classical molecular dynamics (MD). Results from those simulations concluded that agglomerates were likely present in all G-based nanocomposites. The effect of these …

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 …

Extending The Utility Of Ant Colony Optimization Through The Incorporation Of An Intraclass Correlation Coefficient To Assess For Rater Consistency, Mark Leveling

Electronic Theses and Dissertations

Ant Colony Optimization (ACO) is a flexible algorithm designed to solve complex combinatorial problems. While the method was derived from the behavior of ants by researchers in the field of computer science, its application to solving complex combinatorial problems is widespread in a growing number of fields in behavioral science, including psychometrics. Over the last two decades, psychometricians have adapted ACO to measurement model specification problems with the intention of generating measurement models that express measurement model fit and reliability within the standards of what is considered acceptable. Additionally, psychometricians have used ACO to generate shortened versions of existing measures …

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 …

Incremental Quantities Based Permissive Overreaching Transfer Trip Scheme For Protecting Inverter-Based Renewable Resources, Osama Zangoti

Electronic Theses and Dissertations

The power generation landscape evolves, with the increase of inverter-based resources (IBRs) such as solar photovoltaics and wind turbines, providing sustainable and clean energy sources. The shift towards IBRs mitigates climate change, creating considerable challenges to traditional power system protection due to their low fault current. Conventional protection schemes are designed around the internal dynamic of synchronous generators where they can supply an elevated fault current. This thesis explores a protection scheme designed to enhance the security of IBRs. The incremental characteristics of voltage and current coupled with the Permissive Overreaching Transfer Trip scheme (POTT) provide a remarkable ability to …

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 …

Characterization Of Oxidized Tau Protein Aggregation And Inhibition Of Tau Aggregation Via Map2, Brad Krzesinski

Electronic Theses and Dissertations

Neurofibrillary tangles (NFT) composed of the microtubule stabilizing protein Tau are a pathological hallmark of Alzheimer's disease (AD) and many other dementia related diseases specified as Tauopathies. Due to alternative mRNA splicing, intrinsically disordered Tau exists as six separate isoforms in the adult human brain where they are categorized by the lack or inclusion of the second repeat in the microtubule binding domain (3R or 4R respectively). Isoforms are subcategorized by the inclusion or lack thereof, one or two N-terminal inserts. Many studies show that Tau aggregates into amyloid fibrils and these fibrils can break into small oligomeric units known …

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 …

Morphological Remodeling Of The Endoplasmic Reticulum During Mitosis And Its Influence On The Integrity Of The Spindle Apparatus, Katie R. Rollins

Electronic Theses and Dissertations

The Endoplasmic Reticulum (ER) is the largest organelle in the cell by surface area and forms contacts with other organelles throughout the cell. In recent work, the ER has been implicated in numerous processes within the cell beyond its canonical roles of protein synthesis and calcium storage. The ER also undergoes a remarkable transition in morphology during cell division, with mitotic divisions requiring a massive remodeling of various membranous organelles such as the nuclear envelope and Golgi. However, whether changes in ER behaviors modulate mitotic events is less clear. The rapid cleavage divisions in the early Drosophila embryo are a …

The Effects Of Wildfire Burn Severity On Bee And Wasp Communities Two Decades Post-Fire, Alaina K. Smith

Electronic Theses and Dissertations

While fire is a natural disturbance in many global ecosystems, anthropogenic changes are affecting fire frequency, severity, and seasonality. Disturbances like wildfire affect bee and wasp communities, but recent meta-analyses are conflicted about whether fire harms or benefits insect pollinators. We investigated the lasting effects of wildfire burn severity on wild bee communities and floral resource availability across different burn severities in two-mixed severity fires that burned >20 years ago. We found that high severity fire has positive effects on bee diversity that are associated with severity-mediated changes to the floral community. We also studied the effects of wildfire burn …

A Critical Policy Analysis Of Universal Preschool In Colorado: Its Roots, Intentions, And Development, Jamita Horton

Electronic Theses and Dissertations

High-quality preschool experiences are essential for preparing four-year-old children for a successful transition to kindergarten, benefiting them academically, emotionally, socially, and physically. However, access to such preschools remains limited, particularly for children from marginalized communities. This qualitative critical policy analysis examines transitioning from the targeted Colorado Preschool Program (CPP) to a universal preschool approach through the 2022 Colorado House Bill 1295: Department of Early Childhood and Universal Preschool Program. Drawing on Young and Diem's (2017) framework for critical policy analysis, this study explores the roots, development, and potential implications of the universal preschool policy.

This study analyzes documents and audio …

Rhetorical Resonances: An Affective Logic Of Emergence In Space And Time, Craig R. Weathers

Electronic Theses and Dissertations

This project explores the affective circulation of controversy in contemporary public discourse through a rhetorical ecological approach. It addresses the problem of how flattened conceptions of power and social movements cast in binary opposition prevent effective deliberation around public controversies. The research method involves analyzing three case studies through a new framework for rhetorical studies, called a logic of emergence, to consider the resonance and trajectories of actants (individuals, groups, and institutions) in conflict. The first case study examines the Unite the Right rally in Charlottesville and the discursive equating of antifa and the Alt-Right. The second case analyzes the …

The Entrepreneur’S Burden: Investigating The Interplay Between Impostorism And Entrepreneurial Identity, Megan Laura Weber

Electronic Theses and Dissertations

Entrepreneurship is often portrayed as a glamorous pursuit of success but conceals a darker side, exacerbated by impostorism, characterized by challenges, identity conflicts, and diminished well-being. This "dark side" of entrepreneurship is seldom explored due to our collective fascination with the central figure of the entrepreneur. Impostorism is a prevalent phenomenon among individuals who perceive that their role is beyond their capabilities and fear being exposed as a "fake." Impostorism can have negative consequences, including self-sabotage, missed opportunities, and difficulty in seeking help or support, which can impact the ability of entrepreneurs to take entrepreneurial action and experience well-being.

This …

A Phenomenology Study Of The Lived Experiences Of Chinese International Students In The Us During The Covid-19 Pandemic, Linlin Wu

Electronic Theses and Dissertations

This phenomenological study investigates the lived experiences of Chinese international students during the initial outbreak of the COVID-19 pandemic. It aims to delve into how these individuals articulate their experiences during the pandemic, with a particular focus on how their geographical location influenced their experiences. To achieve this, the study employs an innovative approach, integrating a phenomenological method with comparative analysis to elucidate the similarities and differences between students who remained in the US and those who returned to China.

The analysis identified four principal themes among students in the US: 1) Online Learning Challenges, (2) Social Life Adaptation, (3) …

The Power Behind Postsecondary Attainment Goals: A Critical Policy Discourse Analysis, Casey Mccoy-Simmons

Electronic Theses and Dissertations

In this study, I examined neoliberal discourses upheld by policy actors engaged in the college completion agenda that perpetuated power structures maintaining white supremacy by relying on the success of racially marginalized communities to meet postsecondary attainment goals. With philanthropic foundations playing an increased role in advancing an advocacy-focused agenda to increase postsecondary attainment across states, there was also a need to better understand the relationship between state policy actors and foundations. As a national champion of postsecondary attainment goals, I identified the Lumina Foundation as a key policy actor in leveraging its advocacy-focused agenda to influence state policy actors …

Statistical Modeling Of Knee Morphology And Material Properties Considering Diverse Populations, Gabrielle Jeannine Kindy

Electronic Theses and Dissertations

Total Knee Arthroplasty (TKA) is a widely performed surgical procedure aimed at alleviating pain and restoring function in patients with severe knee osteoarthritis. Despite its general success, disparities in postoperative outcomes have been observed across different racial and ethnic groups, with minority populations often experiencing less favorable results. One potential avenue for improving the generalizability of orthopaedic implants is using Statistical Shape and Intensity Models (SSIMs), which can be used to incorporate patient variability directly into the orthopaedic medical device development workflow through population-based finite element analysis.

This work aimed to construct an SSIM from a diverse subject set, incorporating …