Digital Commons Network^™

Educational Technologist Perceived Self-Efficacy During Emergency Remote Teaching Due To A Nonpharmaceutical Intervention, Katherine R. Rapp

Dissertations

This paper discusses the challenges and opportunities of educational technologists (ETs) during emergency remote teaching (ERT) in a non-pharmaceutical intervention (NPI), due to the COVID-19 pandemic. The study was guided by Albert Bandura’s social cognitive theory and self-efficacy framework. The study highlights the positive and negative reflections of self-efficacy for ETs during the transitions to different strategies in classroom teaching. It acknowledges the positive and negative effects on ETs from self-regulation, observational learning, and reciprocal determinism. The study design used was qualitative, aiming to identify the perceived self-efficacy of ETs during ERT in an NPI. Eight ETs from rural school …

The Roots Of Our Food: Relationships Are The Seeds Of Care-Based Food Heritage, Nicole E. Post, Raena D. Parsons, Adrian Boone

Dissertations

The purpose of this co-authored, general qualitative research

study was to examine food relationships between individuals,

communities, and Earth. We explored the concept of relational food

systems pertaining to engagement ideas at EarthDance Organic Farm

School and Hawai’i Institute of Pacific Agriculture. Our research

furthers understanding about how to engage people, individually and

collectively, with the land to inspire action. We argue that care-based

relationships can inspire action, helping individuals reconnect with

their food heritage by engaging with land, community, and self.

Heritage site leaders in food systems who center interconnectedness

create places where relationships between people, land, and food …

A Four-Truth Exploration Of Memory, Social Connection, And Belonging In Fairground And Tower Grove Parks In St. Louis, Missouri, Kenya D. Womack, Adeola N. Adewale, Marie E. Boesch, Gelene M. Strecker-Sayer

Dissertations

Historic racism supported practices such as redlining, discriminatory zoning, and racial steering that separated people and determined the flow of resources and investment into neighborhoods. Communities continue to experience the long tail effects of historic patterns of racism. That is, historic inequities influence the opportunities that residents have to connect with each other and thrive in urban areas. Urban neighborhood parks have the potential to bridge social divides and bring a community together. This basic qualitative research study examines two contested heritage sites in St. Louis, Missouri: Fairground Park, a park in a Black neighborhood that has been historically disinvested …

Beyond "Thanks For Your Service": Navigating The Challenges Of Memorializing The Global War On Terrorism, James Craig

Dissertations

As objects of public commemoration, the American public expects our national war and veteran memorials to draw coherent narratives from diverse, often contradictory, experiences. In return, our society bestows these places with extraordinary authority, allowing them to define the essence of events from years ago. This dissertation explores that phenomenon in the context of the national Global War on Terrorism (GWOT) Memorial, which has been approved for placement in the National Mall and is in its design phase. As its framework, this dissertation uses the four truth framework developed by the South African Truth and Reconciliation Commission. With a focus …

The Write Time For An Autoethnography: How Writing Project Has Shaped My Understanding Of Professional Learning In Community, Tracy Brosch

Dissertations

This study critically examines the cultural and societal phenomenon that comprises the National Writing Project (NWP), specifically reflecting on my experiences of re-designing Gateway Writing Project professional learning experiences as a leader in the organization. I reflect on my encounters, collaborations, and decisions as an Institute instructor and analyze them within the theoretical framework of Communities of Practice using autoethnography as my research methodology. This autoethnographic narrative documents my analysis and understanding of NWP’s framework of social practices, chronicling my journey from participant to advocate and from organizer to leader. Employing the autoethnographic method enabled me to illuminate my own …

The De Mau Mau Conspiracy: The Specter Of Black Vietnam Veterans In The Exercise Of Police Power, 1968-1976, Ina Cox

Dissertations

A forgotten and bizarre event encapsulates the violent decay that characterized the pivotal years the United States endured in the wake of the Vietnam War. Black veterans—guerrilla combat-trained, politically awakened by war, and disillusioned with the entrenched racial order at home—emerged as totems in a fearful, cynical political culture wracked by violence. Men overrepresented in the projection of American power abroad now stood as symbols of its fragility within, potential vessels of retribution for centuries of domestic and global oppression. This anxiety, merging with widespread protests and political upheaval, intensified the belief that American cities stood on the brink of …

St. Louis, Missouri’S Gayborhood And Washington, Dc’S Black Lives Matter Plaza: Revealing The Healing Potential Of Resistance Stories That Are Grounded In Place, Ryan R. Lindsay, Lotte I. Lent, Ackesha J. Patrick

Dissertations

Oppressed people resist, even when facing severe consequences for doing so. At the core of systemic oppression—genocide, slavery, racism, and sexism—is a drive to control and dehumanize. Resistance, however, can serve as a powerful act of rehumanization. From enslaved individuals fleeing plantations to LGBTQ+ individuals risking arrest to gather in mid-20th-century bars, resistance reclaims power and autonomy under oppressive regimes. This study applies South Africa’s Truth and Reconciliation Commission (TRC) “four truths” framework—comprising forensic, personal, social, and healing truths—to the interpretation of contested heritage sites. We argue that sites commemorating resistance hold transformative potential for individual and community healing. Using …

Toward Culturally Responsive Interpretation: Native American Histories, Lifeways, And Ways Of Knowing At The High Desert Museum, Carol Fitzsimmons, Ajena Cason Rogers

Dissertations

Many public museums and historic institutions reflect settler colonial culture and are primarily non-Native led. Although these institutions are trusted, many have perpetuated cultural harm through the theft of belongings, the misrepresentation of stories and histories, and the inaccurate portrayals of cultural content. When interpreting Native American experiences, many non-Native institutions struggle to co-create culturally responsive interpretation. The purpose of this basic qualitative study was to apply the four-truth framework, developed by the South African Truth and Reconciliation Commission, to better understand how the High Desert Museum approached the interpretation of Native American content and stories and to explore how …

Evaluating Depression In Adults Undergoing Substance Abuse Treatment: A Program Evaluation Of Intensive Outpatient Program, Chidochomoyo E. Zvirawa

Dissertations

Problem: Depression and substance use disorders (SUDs) frequently co-occur, complicating recovery outcomes. Despite screening recommendations, depression remains underdiagnosed in many SUD treatment settings.

Methods: This mixed-methods program evaluation examined depressive symptoms among adults in an Intensive Outpatient Program (IOP) using the Patient Health Questionnaire (PHQ-8). Depression screenings were conducted at intake, four weeks, and eight weeks. Eight participants meeting inclusion criteria were assessed. Data included demographics, treatment engagement, and PHQ-8 scores.

Results: PHQ-8 scores significantly declined from baseline (M = 11.75, SD = 6.52) to eight weeks (M = 5.13, SD = 5.05), t(7) = 2.76, p = .028, indicating …

Transforming Heritage Narratives: Harnessing The Power Of Four Truth Inquiry To Reclaim Women’S History And Reinvent Climate Communication At Interpretive Sites, Pamela Blair-Bruce

Dissertations

Abstract

Heritage sites, particularly national parks, serve as powerful spaces for storytelling that shape public understanding of American history, cultures, ecological processes, and diverse landscapes. However, their narratives often omit critical aspects of women’s history and climate change, perpetuating historical erasure and selective storytelling. This qualitative research study applies the Four-Truth Framework developed by the South African Truth and Reconciliation Commission to examine how heritage interpretation can improve the recognition of women’s contributions and strengthen climate communication at heritage sites. To explore approaches to women’s history interpretation, the study employed semi-structured, focus group interviews with educators, historians, and interpreters across …

Pyruvate Dehydrogenase Kinase 4 Mediates Sex Specific Outcomes In Sepsis Induced Cardiomyopathy, John Yap

Dissertations

During sepsis, males often experience worse cardiac outcomes than females. Here, we identified pyruvate dehydrogenase kinase 4 (PDK4) as a key contributor to this disparity. PDK4 is a mitochondrial protein that regulates glucose utilization by inhibiting pyruvate dehydrogenase (PDH). Using a mouse model of endotoxemia, we induced acute inflammation with a sublethal dose of lipopolysaccharide (LPS), which caused cardiac dysfunction and significantly increased myocardial PDK4 expression in males but not females. Cardiac-specific PDK4 overexpression promoted LPS-induced cardiac dysfunction in both sexes, whereas cardiac-specific PDK4 knockout provided protection. In wild-type males, LPS disrupted cardiac metabolism by decreasing PDH activity and fatty …

Developing Full Performance Interpreters: Cultivating Interdisciplinary Mindsets And Skillsets To Engage Audiences In Climate Change, Women's History, And Other Contested Heritage Topics, Delia A. Lister

Dissertations

Heritage sites immerse visitors in places where the impacts of climate change are readily apparent. They are also powerful places to elevate untold stories of women and girls. Heritage site interpreters interact daily with audiences who bring diverse lived experiences, different levels of subject matter knowledge, and multiple perspectives on climate change and the role of women in history. Every visitor interaction has a set of meanings, values, and narratives that visitors knowingly or unknowingly espouse. To interpret contested heritage topics, such as climate change and women’s history, interpreters must cultivate interdisciplinary mindsets and skillsets. The purpose of this basic …

Investigating The Effects Of Brief Video Interventions On White Undergraduate Students’ Racial Attitudes, Alyssa Powers

Dissertations

In this experimental study, a pretest posttest between-groups design was utilized to investigate the efficacy of two brief multicultural educational video interventions in improving the colorblind and affective racial attitudes of White undergraduate students. Ninety-eight self-identified White undergraduate students from a large, Midwestern university were randomly assigned to one of three conditions: (a) viewing a video on the pervasiveness of individual racism and White privilege in the United States (True Colors); (b) viewing a video on institutional racism in the United States (Segregated by Design); (c) viewing a study tips video as the neutral control condition. Participants’ colorblind and affective …

Developing Machine Learning Models And Graphene-Based Flexible Humidity And Temperature Sensors For Machine-Learning-Assisted Sensing, Seth Hajian

Dissertations

Flexible sensor technology has recently gained tremendous momentum in both academic research and industrial applications, transitioning from conceptual frameworks to practical implementations across diverse fields. This remarkable advancement can be attributed to several converging factors, including the maturation of nanomaterial science, the advancements of machine learning algorithms, and the critical demand for intelligent sensing solutions in healthcare, environmental monitoring, and industrial automation. The growing emphasis on personalized medicine and real-time health monitoring, accelerated by global health challenges, has further highlighted the necessity for accurate, cost-effective, and adaptable sensing platforms. This dissertation presents the fulfillment of three interconnected research projects focused …

The Fault Line: Understanding Tension Between Industry And Higher Education Institutions In Sustained Partnerships, David Lawrence

Dissertations

This study investigates the dynamics that influence tensions in industry–higher education partnerships and identifies effective navigation factors in sustainable partnerships. Despite the increasing prevalence, such partnerships face high failure rates due to inherent tensions. This research explores how partners from industry and higher education institutions successfully navigate these tensions using a qualitative case study approach.

This investigation employed a case study design with a multi-case two-by-two holistic matrix and an interpretive, constructivist framework. Data collection involved 16 semi-structured interviews with key individuals from nine higher education institutions and five industry organizations spanning healthcare, technology, consulting, real estate development, and accounting …

The Correlation Between Depression And Gendered Racism Among Black Women, Charmagne M. King

Dissertations

Black women face unique challenges related to intersecting racial and gender-based discrimination, often referred to as gendered racism. Previous research has indicated this form of oppression may significantly affect mental health, particularly depression. However, few studies have examined how gendered racism interacts with racial identity and demographic factors (e.g., age, marital status, geographical location) to predict depressive symptoms. Using a sample of 164 self-identified Black women, this study investigated the correlational relationship between gendered racism and depression among Black women and examined how gendered racism, racial identity, and key covariates (age, marital status, and geographical location) predict depressive symptomatology. The …

Through The Wire: Examining The Experiences Of Formerly Incarcerated Students In Prison Education Programs And The Wraparound Services Needed To Support Their Success, Isabel Castro

Dissertations

This qualitative study examines the experiences of formerly incarcerated individuals in Prison Education Programs (PEPs) and the wraparound services necessary to support their success. Through Schlossberg’s Transition Theory, this study explores how incarcerated students navigate educational transitions and how educators facilitate transformative learning. Using case study and narrative inquiry, interviews were conducted with fifteen formerly incarcerated PEP participants and seven educators.

Thematic analysis revealed six major themes: Access to Education in Carceral Settings, the Impact of Education on Incarcerated Individuals, Wraparound Services and Student Support, Experiences of Formerly Incarcerated Students, the Role of Educators and Program Facilitators, and Best Practices …

Experimental And Computational Study Of Slow Crack Growth Of High Density Polyethylene, Abdulla Fawzi Almomani

Dissertations

This dissertation investigates the slow crack growth (SCG) behavior of High-Density Polyethylene (HDPE) under various mechanical and environmental conditions. The study combines experimental analysis and computational modeling to enhance the understanding of SCG mechanisms in HDPE, particularly in pressurized pipes and under the exposure to hydrocarbons. A novel Crack Layer (CL) theory-based SCG model is developed and validated through experimental data, offering a predictive framework for HDPE failure assessment. The main objective of this dissertation is to quantify and model the viscoelastic-viscoplastic behavior of HDPE under monotonic and cyclic loading conditions while addressing SCG kinetics in structural applications. The study …

Comparative Genotoxicological Analysis Of Occupational Pesticide Exposures: An Experimental Approach And Systematic Review, Moustafa Samy Sherif

Dissertations

This dissertation investigates the genotoxic and cytotoxic effects of pesticide exposure through three complementary research components: a systematic review of occupational pesticide exposure in Arab countries (AraSys), a systematic review on encapsulated versus conventional pesticide formulations (Encap-Sys), and experimental toxicological assessments of various pesticide formulations in human cell lines (Pyr-Ex). This experimental component includes cytotoxicity assays using propidium iodide and DNA damage assessments via alkaline comet assays in HL60 and HepG2 cell lines exposed to pyrethroid insecticides and glyphosate-based formulations.

The AraSys systematic review revealed a critical positive association between occupational pesticide exposure and DNA damage in agricultural workers in …

Design And Development Of Hip Implants For Longevity Through Integrating Advanced Groove Structures And Additive Manufacturing, Asarudheen Abdudeen

Dissertations

This doctoral research concerns the design and optimization of hip implants (HIs) to enhance performance, durability, and improve patient outcomes by addressing the key issues of wear, deformation, and stress distribution. Innovative surface groove designs have been introduced to both a solid and a hollow femoral head with the aim of reducing friction and wear. The addition of grooves, with both a hemispherical and rectangular cross-section, onto the femoral head reduced friction, as debris produced by the inner liner was trapped within the grooves, significantly reducing adhesive wear. A numerical simulation study compared the effects of surface modifications both grooves …

Effective And Empowering Psychotherapy For Black Women: A Culturally Adapted Proposed Model, Kaylla A. Jackson

Dissertations

Black women in the United States are a minoritized group that has experienced oppression and suffering explicitly targeting their intersectional and minority identities. The intensity and frequency of stressors result in a negative impact on Black women that prompts a need to cope. Rather than relying on professional mental health care, many Black women rely on their religious and spiritual communities and other cultural and historical methods to cope with stressors. As a field and profession, clinical psychology has been overwhelmingly dominated by White individuals. The profession has a rich history of developing and perpetuating oppressive systems that have ignored …

Understanding The Afghan Newcomer Experience From The Perspectives Of Teachers And Students, Elisabeth C. Trost

Dissertations

Newcomer English learners (ELs) often arrive in the United States having fled persecution, economic or political oppression, war, or natural disasters in their country of origin. They are new to the English language, new to the American school system, at times well into their educational journey, and sometimes have missed out on significant amounts of formal schooling. Many also carry trauma from the circumstances that forced them to leave their homes. Most schools are not fully equipped to welcome these students and their families into the learning community, nor are they prepared to address the unique challenges newcomer ELs face. …

Bridging The Gap: Exploring The Intersection Of Formal Mental Health Services And Informal Social Supports In Bipoc Communities, Patrice D. Patton-Campbell

Dissertations

Despite growing awareness of mental health disparities, BIPOC (Black, Indigenous, and People of Color) communities continue to face significant barriers in accessing culturally responsive mental health care. This dissertation explores the intersection between formal mental health services and informal social supports such as family, religious institutions, and community networks to understand which systems are more trusted, accessible, and effective for BIPOC individuals. Grounded in Urban Liberation Psychology and guided by decolonial and culturally responsive care frameworks, this qualitative study draws from focus groups and interviews with 33 participants, including both community members and service providers from the Chicagoland area and …

Narratives Of Latina Teacher Candidates On Subtractive Schooling Experiences And Their Language Identity, Joao Goebel

Dissertations

The subtractive nature of bilingual education in the United States has long impacted the language identities of Latinx students. Despite being raised in multilingual environments, many are schooled in systems that devalue their home languages and prioritize English-only instruction. This study explored how these dynamics influenced Latina teacher candidates’ perceptions of their own bilingualism and professional identities. The purpose of the study was to examine how Latina teacher candidates understood and constructed their language identities in the context of their K–12 and higher education experiences. The study used narrative research centered on four Latina teacher candidates enrolled in an undergraduate …

Narratives Of Jewish American Public School Educators Amid Rising Antisemitism Post October 7, 2023, Cassandra Schwartz

Dissertations

This study investigated how Jewish American public school educators are responding to rising antisemitism post-October 7, 2023. While research exists on global antisemitism, the experiences of Jewish educators within the unique context of American public schools represent a significant and under-explored gap in academic literature. A qualitative narrative research approach, grounded in critical theory, was employed. Data were collected through semi-structured interviews with eight Jewish American public school educators and analyzed thematically. The findings revealed participants’ experiences of a heightened sense of fear and silence from colleagues and institutions, leading to feelings of isolation and being unsupported. Critically, this study …

Social Media And The Effect On Student Engagement, Lara Mcelveen

Dissertations

The purpose of my study was to determine the impact of social media on student engagement and behaviors in high school classrooms. The overarching research question that guided my study was: What is the impact of social media on student engagement? I used a mixed methods approach of quantitative and qualitative data to research my topic. I collected the data using surveys of two stakeholder groups in the study: young adults and educators. The survey results showed that both educators and young adults perceived a decline in class engagement and the rise of behavior in the classroom from social media …

Colloidal Quantum Dots: A Path Toward Making Mid-Wave Infrared Sensing A Ubiquitous Technology, Mohammad Mostafa Al Mahfuz

Dissertations

Reducing the size, weight, power consumption, and cost (SWaP-C) of infrared detectors could make infrared sensing more widely accessible. In the critical mid-wavelength infrared (MWIR) spectral range of 3-5 gm, commercially available detectors are limited by the high costs associated with epitaxial growth and hybridization, as well as the need for cryogenic cooling. These factors restrict their use to defense and space applications.

Colloidal quantum dots present a promising material for overcoming these challenges, with wafer-scale monolithic integration and Auger suppression being the key material capabilities to minimize the sensor's SWaP-C. Infrared sensors based on colloidal quantum dots have been …

Childhood Neuroanatomical Markers Of Familial And Nonfamilial Attention-Deficit/Hyperactivity Disorder, Rahman Baboli

Dissertations

Attention-deficit/hyperactivity disorder (ADHD) is a highly prevalent neurodevelopmental disorder, characterized by developmentally inappropriate levels of inattention, hyperactivity, and impulsivity. Children with family history of ADHD are at an elevated risk of having ADHD as well as a higher risk of persistent ADHD into adulthood, reflecting a source of etiological heterogeneity in ADHD. This heterogeneity in terms of both biological and environmental risk factors may explain differences in neural correlates, outcomes, cognitive, behavioral as well as developmental trajectories. It is therefore critical to understand the influence of having, or not having positive family risk factors on the neuroanatomical structures of the …

Machine Learning And Optimization For Intelligent Decision-Making, Elson Cibaku

Dissertations

This dissertation presents a series of innovative machine learning and optimization model designs that address complex operational challenges across logistics and power systems. By integrating advanced neural architectures with robust optimization techniques, the work delivers scalable solutions designed to improve efficiency, reliability, and decision-making in dynamic and real-world environments. The first study introduces a two-stage approach to effective vaccine distribution. This framework tackles the capacitated vehicle routing problem by combining adaptive clustering techniques with reinforcement learning and a simulated annealing pickup policy. Through extensive computational experiments, the approach demonstrates substantial improvements in routing efficiency, reducing both computational time and logistical …

The Interplay Of Accommodation And Oculomotor Vergence Within Young Adults With Binocularly Normal Vision And Typically-Occurring Convergence Insufficiency, Sebastian Fine

Dissertations

Concerted binocular coordination evoking oculomotor and refractive responses to visual stimuli are essential to daily function. Oculomotor dysfunctions can inhibit binocular responses to visually-near stimuli and have high comorbidities to accommodative dysfunctions. Three visual cues for inward (convergent) and outward (divergent) oculomotor movements, when presented concertedly create natural-viewing conditions: disparity- the binocular difference in light cast onto the fovea due to differing ocular perspectives, blur- the acuity of a visual target which stimulates accommodation, and proximal- the perceived distance of a visual stimuli based on size.

This study aims to quantitatively investigate oculomotor vergence and accommodation performances between individuals with …