Digital Commons Network^™

Computational Prediction Of Hemolysis In Laminar Non-Newtonian Fluid, Nasim Gholizadeh

Theses and Dissertations

Hemolysis, the rupture of red blood cells (RBCs), is a critical concern in blood-circulating devices, requiring accurate predictions to ensure patient safety. This study investigates the sensitivity of hemolysis predictions to variations in viscosity models and hemolysis coefficients under complex flow conditions. Computational Fluid Dynamics (CFD) simulations were conducted using Ansys Fluent and OpenFoam on identical meshes with the FDA benchmark nozzle model. Under laminar flow conditions, CFD frameworks accurately predicted global variables, but variations in derived quantities, such as strain rate and vorticity, emerged due to differences in numerical solvers and gradient evaluation methods. These variations affected predictions of …

Examining A Year One Sor Implementation: A Mixed-Method Study Of Teacher Experiences And Student Literacy Scores, Christine Litzinger

Theses and Dissertations

With increasing national and legislative mandates prioritizing SoR practices, many schools are shifting their literacy practices to align classroom instruction, interventions, and screening to follow reading research, which can require a shift in pedagogy for individual educators and schools. This exploratory sequential mixed-methods study explored a year one implementation of the Science of Reading (SoR) in a mid-size midwestern school district during their first year of across-district literacy reform. Qualitative case study interviews were conducted of K-3 Classroom teachers (4) and literacy coaches (4). Emergent themes from the findings included value in high fidelity professional development, challenges related to resource …

The Role Of Student Loan Debt On Delayed Homeownership Among Black American College Graduates, Dedan Makongoro Kusaga

Theses and Dissertations

The growing burden of student loan debt in the United States has raised significant concerns about its broader social and economic impacts, particularly on young adults’ ability to achieve financial milestones such as homeownership. Black American college graduates are especially affected, often carrying higher loan balances and facing greater financial barriers due to historical and structural inequalities. This quantitative study examined the role of student loan debt and other factors influencing delayed homeownership among Black American college graduates, using the public-use Baccalaureate and Beyond (B&B: 2008/2018) dataset from the National Center for Education Statistics (NCES). Findings indicated student loan debt, …

Studentification And Off-Campus Housing: A Case Study Of Grand Forks Near-Campus Neighborhoods, Alva Lindstroem

Theses and Dissertations

With national trends in higher education experiencing dwindling enrollments and personal economies increasingly strained, the University of North Dakota (UND) has grown to become the biggest public higher education institution in North Dakota, having effectively bounced back from the COVID-19 pandemic drop in enrollment. Grand Forks, North Dakota, is the host of UND and home to a student body of over 14,000 as of 2023 fall semester. This study focuses on; to what extent is studentification taking place in Grand Forks, ND; and how the observed housing- and demographic patterns in Grand Forks align with, or diverge from, the broader …

Why Can't We Just Be: Native American College Student Sense Of Belonging At The University Of North Dakota, Gavin Michael Nadeau

Theses and Dissertations

Sense of belonging is a primary indicator of retention and persistence to graduation forNative American college students. Though more than doubling in the past 30 years, Native American college student enrollment has decreased since 2010 (197,000 in 2010 to 107,000 in 2021) (PNPI, 2021; NCES, n.d.). In 2020, Native American students’ 2nd year retention rate was more than 20% lower than their white peers at the University of North Dakota (UND, 2020). When college students of color feel like they belong, they are more likely to retain, persist, and graduate (Mowreader, 2024; Hurtado & Carter, 1997; Hurtado et al., 1999). …

Investigating The Role Of Keratin 6 And Sox2 In Regulating Growth, Stemness, Basal/Squamous Expression, And Chemotherapy Response In Muscle-Invasive Urothelial Carcinoma, Nelofar Nargis

Theses and Dissertations

Urothelial carcinoma (UC) is a prevalent and aggressive malignancy arising in urothelial cells, with arsenic exposure recognized as a significant environmental risk factor. It is categorized into two primary subtypes based on the extent of cancer progression beyond the bladder’s muscle wall: non-muscle-invasive urothelial carcinoma (NMIUC) and muscle-invasive urothelial carcinoma (MIUC). While NMIUC is associated with a relatively favorable prognosis, progression to MIUC is more aggressive and leads to significantly worse outcomes, including poor treatment response and increased metastasis. Squamous differentiation (SD) in UC is an emerging hallmark of aggressive UC, with patients often having poor prognoses and developing chemoresistance, …

From Emily To Loralei To Rory: A Qualitative Textual Analysis Of Scripts From Gilmore Girls For Real-World Application, Erin Mccann

Theses and Dissertations

In the realm of interpersonal communication and intrafamilial research, one dynamic, the mother and daughter pairing, is especially poignant in exploring the ties of closeness, the openness of communication and the potential for long-term impact on a daughter’s development. When studying the mother and daughter dynamic through a work of fiction, patterns can be observed without bias, allowing for evaluation of the strength of relationship and identification of broader implication to the discipline of family communication. In this study, a textual analysis was conducted evaluating 21 exemplary episodes of the 2000s television show Gilmore Girls focused entirely on the interactions …

The Wicked Problem Of Moral Distress: Exploring The Experiences Of Rural Clinic Nurses, Sydney Rae Johnson

Theses and Dissertations

Background: Moral distress is an occupational hazard for nurses that can negatively impact nurses, patients, and the healthcare system. Moral distress has been well documented in high-risk care environments. Each nursing care environment has its own unique triggers for moral distress, but these triggers are unknown in rural clinic nurses. Design and Purpose: This convergent mixed methods study sought to gain a broader understanding of moral distress in nurses working in rural clinic settings.

Methods: Convergent mixed methodology was used to gain a broader understanding of moral distress in nurses working in rural clinic settings. Following ethical approvals, informed by …

Evaluating The Engineering Properties Of Waste-Modified Asphalt Binders And Mixtures As Inputs For The Mechanistic-Empirical Pavement Design, Duncan Rioba Oteki

Theses and Dissertations

Pavements are essential for economic development and mobility, with asphalt dominating the US road network due to its cost-effectiveness, ease of maintenance, and recyclability. However, the environmental impacts of asphalt production and the depletion of virgin materials have driven the integration of waste products into asphalt mixtures to improve sustainability. This study evaluated the engineering properties of waste-modified asphalt binders and mixtures as performance-based inputs for the Mechanistic-Empirical Pavement Design Guide (MEPDG). The rutting performance of ten asphalt mixtures commonly used in North Dakota was assessed using mechanistic and empirical tests. Mechanistic tests included the dynamic modulus (|E*|), Flow Number …

Spatial And Temporal Assessment Of Meteorological Drought Using The Standardized Precipitation Index (Spi) And Its Effect On Crop Yield Over The Corn Belt Region Of The United States From 2000 To 2023, Victor Araya

Theses and Dissertations

Climate change and global warming have contributed to extreme weather events and patterns, including severe flooding, earthquakes, wildfires, and drought. Drought happens to be the deadliest catastrophic event around the world. Drought's impact on ecosystems and local communities has been increasing in many parts of the world, including the United States and, most importantly, the corn Belt, which also happens to be the country's food basket. Understanding drought prediction and mitigation can be investigated through drought indices. The Standardized Precipitation Index (SPI) is considered the most reliable in this study. It is used in this study to present the critical …

Applying The 4d Model Of The Country Image To Explore The Relationship Between Saudi Arabia’S Sport Diplomacy And Its Perceived Image Among American Adults, Ibrahim Bin Jaman

Theses and Dissertations

This study investigated the relationship between Saudi Arabia’s sports diplomacy and strategy of hosting major international sports events and its image among American adults. Notably, the Saudi government’s strategic use of hosting sports events aligns with the goals of Saudi Vision 2030, fostering economic diversification and promoting tourism. The conducted study examined American adults’ exposure to international sports events held in Saudi Arabian, this exposure’s correlation with the image of the country, and potential differences in the perception of Saudi Arabian between American adults who have been exposed to sports events in Saudi Arabia and those who have not. A …

Gender And Family Differences In Faculty Motivation, Allyssa Jean Baumbach

Theses and Dissertations

This three-article dissertation examines gender and family differences in faculty motivation. Faculty motivation has primarily been studied in the context of development but has only recently begun to focus on productivity and success. Further, studies of faculty motivation do not provide in depth analysis of gender and family differences. Therefore, the current program of research uses the Self-Determination Theory to examine gender and family differences in faculty motivation and considers how traditional gender norms may contribute to these differences. The first study explored if gender difference existed. Data from a small sample of faculty (N=118) from two universities in the …

Attributions Of Blame In Cases Of Stealthing, Shane William Knutson

Theses and Dissertations

Nonconsensual condom removal (NCCR), also known as “stealthing”, is a form of sexual abuse where an individual removes the condom without their sexual partner’s knowledge. While research regarding prevalence of NCCR has been conducted over the past decade, there are still aspects of previous research on other forms of sexual abuse that did not account for cases of NCCR. One such gap in the current literature are studies that investigate how individuals attribute blame to the victims of NCCR. Previous research has shown that there are differences in how individuals attribute blame towards victims of sexual abuse based on different …

An Explainable Ai Framework For Detecting Harmful Algal Blooms (Habs) In Freshwater Lakes, Meera Gopinath Sujatha

Theses and Dissertations

The increase in economic impacts due to the rapid growth of harmful algal blooms (HABs) in freshwater lakes has prompted the development of monitoring and prediction systems. However, limited target data hinders reliable predictions on HAB formations. To address this limitation, this dissertation focuses on providing solutions through data-driven,interpretable, and explainable machine learning models. In Chapter 3, an interpretable multivariate regression model such as Vector Autoregressive (VAR) was used to analyze the important factors that contribute to the formation of cyanobacteria in lakes. The causality tests performed on multiple water quality data helped to determine Alkalinity, Chlorophyll-a (Chl-a), andWater Temperature …

Hazard Impact Assessment Of Brine Spills On Groundwater Pollution In Western North Dakota, Grace Dzifa Agbozo

Theses and Dissertations

The rapid expansion of oil and gas production in North Dakota’s Bakken Formation has heightened environmental concerns, particularly groundwater contamination from brine spills. Brine, a highly saline byproduct of oil extraction, poses a serious threat to water quality due to its chemical composition. This study examines brine spill impacts from 2013 to 2024 across Williams, Mountrail, McKenzie, and Dunn counties using GIS and the DRASTIC model, enhanced with Analytical Hierarchy Process (AHP) and Fuzzy Overlay techniques. Essential hydrogeological factors were analyzed to produce vulnerability index maps. Furthermore, spatial autocorrelation (Moran’s I), Optimized Hot Spot Analysis, and Emerging Hot Spot Analysis …

Great Expectations: How Gender Assigned At Birth Shapes Viewpoint Based Perceptual Disparities In Gender-Diverse People, Adelyn Emter

Theses and Dissertations

The purpose of this study was to examine disparities between personal beliefs and perceived societal ideologies about earning gendered traits and maintaining masculinity and femininity, with a focus on gender-diverse perspectives and the influence of gender identity on responses to social research. The current study recruited 334 gender-diverse participants to compare Viewpoint and Gendered Trait based on participant Gender Assigned at Birth, using twelve statements about earning and maintaining masculinity and femininity. The Traditional Egalitarian Sex Role (TESR) Inventory and Social Dominance Orientation (SDO) Scale were used as covariates which significantly contributed to the model. As expected, societal belief scores …

Belongingness And Science Identity Of Underrepresented Students In Aerospace Sciences, Bella Hettich

Theses and Dissertations

Despite efforts to support underrepresented individuals—specifically those from racial, ethnic, and gender minority groups—they continue to face unique challenges that affect their belongingness in aerospace sciences, leading to issues with retention in educational programs and subsequent professional pathways. Such hindrances to personal achievement can also impede broader organizational goals. Addressing these challenges is critical, as supporting the success of underrepresented individuals fosters diverse perspectives, which are essential for driving innovation and maximizing organizational productivity. Just as importantly, ensuring that every individual, regardless of background, has access to opportunities and the support needed to succeed fulfills an ethical obligation. Upholding the …

A Qualitative Study Exploring Best Practices And Applications Of Green, Eco, And Environmental Social Work In Canadian Social Work Practice, Ryley Kristanne Kowalski

Theses and Dissertations

Humanity and society are deeply connected to nature and the environment at their core. Through processes of colonization, the Industrial Revolution, urbanization, consumerism, and capitalism, people and societies have become increasingly disconnected from the natural environment. Introduced as a helping profession through the Industrial Revolution, social work began rooted in environment but quickly changed to understand human and societal wellbeing through the narrow scope of the social environment through the person-in-environment approach. Modern day issues of climate change, environmental degradation, environmental racism, and environmental justice movements have necessitated social work’s increased understanding of the natural environment. The purpose of this …

White Paper For Faculty Professional Development In Establishing, Addressing, And Informing, To Promote Mental Wellness For Health Careers Students, Betty J. Mcvay

Theses and Dissertations

This research utilized a qualitative case study to explore the need for faculty professional development in the health careers division at a public non-profit California community college, specifically Porterville College. Literature suggests that mental health is a crucial topic to address in contemporary higher education. College students, in general, are facing a notable deterioration in their overall mental well-being, accompanied by an increase in mental disorders. Furthermore, students in health careers programs frequently encounter even more intense stress and psychological challenges, stemming from their constant exposure to high-pressure, emotionally charged situations, and vicarious trauma. Although literature emphasizes the critical need …

Evaluating Human Factors In Isolation And Confinement During Analog Spaceflight: A Decadal Survey Assessing Ilmah Crew Psychology, Travis Michael Nelson

Theses and Dissertations

This study examined 13 crews participating in analog Martian surface simulations to investigate psychological experiences within the first collegiate planetary surface habitat. The University of North Dakota (UND) Integrated Lunar-Martian Analog Habitat (ILMAH) was utilized with high-performing participant crews (n=42) who were recognized and recruited for their skills. Common environmental similarities that each crew faced included isolation, confinement, time-latent communications, demanding work hours, monotonous tasks, physically strenuous Extravehicular Activities (EVA), personal psychological adaptations, and interpersonal psychosocial challenges. The primary objective of this study was to evaluate self-appraised crew performance measures across continuous phases of isolation and confinement lasting up to …

Artificial Intelligence And Machine Learning Models To Increase Colorectal Cancer Detection For American Samoa Adults, Va'atausili Tofaeono

Theses and Dissertations

Colorectal cancer (CRC) remains a leading cause of morbidity and mortality among Indigenous and Pacific Islander populations, particularly in American Samoa, where screening rates are critically low due to cultural barriers, limited healthcare infrastructure, and geographical isolation. This dissertation explores the potential of an Artificial Intelligence and Machine Learning (AI/ML) predictive model to enhance CRC screening and early detection among American Samoan adults. By leveraging widely available clinical data, such as complete blood count (CBC) results, age, and gender, the AI/ML model aims to identify high-risk individuals for targeted interventions, thereby improving early detection and treatment outcomes.The dissertation comprises three …

Caspases Protect Against Hyperglycemia Induced Necroptosis-Like Cell Death In Brain Endothelial Cells, Aleena S. Mathew

Theses and Dissertations

Acute diabetes characterized by high spikes in blood glucose levels in association with severe hyperglycemia can lead to an increased risk of ischemic stroke in the brain. To better understand high blood glucose levels, hyperglycemia, in the brain we explored its effects on endothelial cells. Endothelial cells line the inner walls of blood vessels and are directly impacted in hyperglycemia. Brain endothelial cells are a major component of the blood brain barrier (BBB) which tightly regulates the brain’s microenvironment. The type of cell death such as apoptosis, caspase dependent, or necroptosis, caspase independent, can exacerbate diabetes associated complications. There is …

Sexual Labor, United States Immigration Law, And México's Emerging Feminist Consciousness, 1875-1925, Narcedalia Ramirez

Theses and Dissertations

This thesis is an intellectual, cultural, women’s, and transnational history between México and the United States that outlines the arguments over sex workers. At the forefront is how stories of sex workers intersect with the histories of moral and hygiene reform movements, and United States laws on immigration and morality during the years of 1875 to 1925. This body of work is in conversation with scholars such as Kelly Lytle Hernández. Susie S. Porter, and Diana Montaño.

Sources include United States legislation, Spanish written newspapers and studies on sex work from México, the Elena Torres Cuéllar Archives, the Margaret Sanger …

Black Adolecent Girls' Perceptions Of Dress Code Violations, Pat A. Carpenter

Theses and Dissertations

This study explored the experiences of Black adolescent girls at Wellington Middle School (pseudonym) regarding dress code policies and the disciplinary actions associated with their attire. Through the analysis of disciplinary data, qualitative interviews, and a review of relevant literature, the research aimed to uncover potential racial biases within dress code policies and their enforcement. Preliminary insights indicated that such measures may contribute to broader patterns of racial discrimination and inequity in the education system, impacting the academic and social development of these students. The study goals were to emphasize the need for policy reforms and advocate for the development …

Targeting Als: A Multi-Cellular Study On The Potential Therapeutic Role Of Azole-Based Compounds, Alisha R. Kennedy

Theses and Dissertations

Amyotrophic Lateral Sclerosis (ALS), also known as Lou Gehrig’s disease, is a progressive neurodegenerative disorder that leads to the degeneration of motor neurons, which control voluntary muscle movements such as eating, speaking, and breathing. As these neurons are damaged, voluntary movement ceases, leading to a fatal outcome. The survival time of ALS patients varies, ranging from a few months to up to 10 years. Chapter 1 of this thesis provides an overview of ALS, highlighting the role of transactive response DNA-binding protein 43 (TDP-43), a key feature in ALS and other neurodegenerative diseases. The aggregation of TDP-43, particularly due to …

Lights, Camera, Action: A Student's Perspective On Reimagining Film Production Opportunities, Ma'lon I. Lane

Theses and Dissertations

The pursuit of a crew job in the film industry is a multifaceted endeavor, offering various pathways that cater to diverse aspirations and circumstances. Central to this exploration is the question of whether attending a university and obtaining a degree in film is essential for success. I was determined to answer the following: What is the likelihood that a higher education in Film Production leads to more efficient job acquisition in the film industry? The project is considered narrative, originating from the personal quality of the research questions. I used my resources to gather qualitative data through interviews of film …

Online Parameter Adaptation Of Lqr Controllers Via Rls For Prosthetic Joint Control: Experimental Validation On A Quanser Qube-Servo 2 Platform, Cynthia Lopez-Jordan

Theses and Dissertations

This thesis develops and experimentally validates an online adaptive Linear Quadratic Regulator (LQR) control method for prosthetic joint systems using Recursive Least Squares (RLS)-based real-time parameter estimation on the Quanser QUBE-Servo 2 platform. Traditional LQR controllers assume a fxed system model, which limits adaptability and results in reduced tracking accuracy, poor robustness, and loss of optimal performance when applied to dynamically changing prosthetic joints, infuenced by load variations, user gait changes, and mechanical wear. Limited experimental validation exists for combining RLS with online LQR adaptation in prosthetic-like systems.

To address these limitations, an RLS-driven Adaptive LQR framework was implemented to …

From Curiosity To Controversy: American Perception Of Japanese Immigrants, 1853-1924, Chloe Elizabeth Curbelo

Theses and Dissertations

In the mid-nineteenth century, as the United States reached the Pacific through westward expansion, Asia emerged as a new stage for commerce and power. Japan, long isolated under the Tokugawa shogunate, became an object of American fascination when forced into relations. While early depictions cast Japan as an exotic yet uncivilized nation in need of Western guidance, Japan’s rapid modernization and the growing number of Japanese immigrants on the West Coast transformed curiosity into anxiety. My paper traces this evolution of perception from 1850 to 1924, arguing that shifting views of Japan and its people reflected America’s ethnocentric notions of …

She Works Hard For The Money: Black Women Entrepreneurs, Business Networks, And Entrepreneurial Success, Dejuan Erica Price

Theses and Dissertations

Although Black women launched an estimated 2.08 million businesses in 2023 (accounting for 14.8% of all women-owned firms), they remain significantly underrepresented among high-growth, well-capitalized enterprises. This paradox highlights the need for deeper examination of the structural and social factors that shape their entrepreneurial experiences and outcomes. Using an exploratory sequential mixed-methods approach, this study examined how network structure, networking behaviors, personal motivations, and social contexts influence entrepreneurial success among Black women founders. The qualitative phase revealed how faith, emotional labor, social isolation, and cultural values shaped participants’ definitions of success and approaches to entrepreneurship. Founders emphasized purpose, healing, and …

Psychotherapy And Changes In Adult Attachment: A Systematic Review, Meghan Kussman

Theses and Dissertations

Attachment insecurity is a transdiagnostic vulnerability factor linked to a wide range of emotional and relational difficulties. Although early attachment patterns tend to be relatively stable, research indicates that attachment orientations can change over time, particularly in response to significant relational or therapeutic experiences. This systematic review examined 39 empirical studies published between 2000 and 2024 to determine whether engagement in psychotherapy is associated with changes in adult attachment security. Eligible studies assessed attachment both pre- and post-treatment using validated self-report measures (e.g., Experiences in Close Relationships Scale; ECR) or interview-based measures (e.g., Adult Attachment Interview; AAI), and reported statistically …