Digital Commons Network^™

Friction Stir Processing Of Cobalt-Chromium-Molybdenum For Improvements In Biomedical Applications, Kaleb Kiyoshi Bates

Theses and Dissertations

Friction Stir Processing (FSP) has been investigated as a means of microstructural modification aimed at improving mechanical properties such as corrosion resistance and wear resistance of biomedical-grade cobalt-chromium-molybdenum (CoCrMo) alloy. FSP was successfully completed on high-carbon ASTM F1537 CoCrMo plates with operating temperatures ranging from 630°C to 850°C by adjusting spindle speed, traverse speed, and forge force. Hardness, wear resistance, and corrosion resistance testing were performed, along with Electron Backscatter Diffraction (EBSD) to analyze grain refinement and phase structure. FSP produced grain refinement up to 97% relative to the untreated baseline across the investigated temperature range, with lower processing temperatures …

Receiving Isaac Again: Joy And Return To The Finite In Fear And Trembling, Jeffrey M. Matheson

Theses and Dissertations

This thesis argues that joy is a constitutive but underexamined feature of faith in Søren Kierkegaard’s Fear and Trembling. While the text is often interpreted through sacrifice, silence, dread, paradox, and the teleological suspension of the ethical, these categories do not exhaust Johannes de Silentio’s account of Abraham. By foregrounding Abraham’s joy, this thesis shows that faith is not merely the willingness to surrender the finite, but the capacity to receive the finite again after it has been given up. Isaac is not only Abraham’s beloved son, but the child of promise, the visible form of God’s covenant, and the …

A Mathematical Model Of The Interactions Between A Collagen Lattice, Fibroblasts, And Fixed Surfaces With Varying Topographies, Mary Jenkins

Theses and Dissertations

Collagen is an important structural protein in the body, which plays a role in wound healing, particularly the contraction process. Collagen lattices have been studied for nearly 50 years to provide insight into wound contraction. In some cases, collagen interacts with surfaces that have fixed shapes, such as medical implants. Our model focuses on the interactions of a collagen lattice with such a fixed surface. We mathematically model a collagen lattice as a network of nodes connected by springs. We also model fixed surfaces that have various topographies. Our model includes fibroblast cells that connect to both surfaces and remodel …

Navigating The Cocoon: An Interpretative Phenomenological Analysis Of Mothers’ Experiences Of Seeking Diagnosis And Services For Children With Disabilities In Insular Rural American Samoa, Elizabeth Cutrer, Ocean K. Akau, Lorena Seu, Isabel Medina Hull, G. E. Kawika Allen, Ofa H. Kanuch, Cameron W. H. Hee, Melia Fonoimoana Garrett

Faculty Publications

This study examines how mothers raising children with disabilities in American Samoa experience the processes of seeking diagnosis, navigating special education, and advocating for services within an insular rural context. American Samoa, an unincorporated U.S. territory located 2600 miles from Hawaiʻi with a population under 50,000, represents a case of what we term insular rurality—a condition in which the structural disadvantages of rurality are intensified by oceanic isolation, territorial governance, and colonial history. Data were collected through three focus groups with fifteen mothers whose children hold a range of disability diagnoses, with a card sort activity at the outset of …

An Analysis Of Heat Spread Through Smoldering Pine Needles, Timothy Keith

Theses and Dissertations

The goal of this thesis is to calculate the average speed of flame spread through smoldering pine needles. We present two different models for doing this: the first is a very large system of ODEs meant to represent the spread of flame through individual needles, the second is a macroscopic model based on the porous medium PDE. Simulations are run for each of these models and compared to each other as well as to existing models and experimental results.

Learning Trajectories Of Online Batch Selection Methods, Luke Green

Theses and Dissertations

Modern deep neural networks achieve strong performance on large-scale datasets, but often require substantial training time. Online batch selection methods seek to reduce this cost by updating models on informative subsets of each batch rather than on all available examples. Recently introduced methods leverage teacher models and report substantial speedups, particularly in noisy-label settings. However, comparisons are often based on the number of epochs required to reach a target test accuracy, a coarse metric that is sensitive to implementation details and may obscure important differences in learning dynamics. In this thesis, we implement several online batch selection methods in a …

Advancing Data Usability, Activity Modeling, And Stability Optimization In Computational Enzyme Design, Spencer Gardiner

Theses and Dissertations

A grand challenge of computational biology is to computationally design, in a single pass, a protein sequence that catalyzes an arbitrary chemical reaction at a high rate under specified conditions [1]. This work details advances in three essential areas on the path to that goal: data quality, activity prediction and modeling, and stability optimization. The structure and implementation of the Allotrope Simple Model (a FAIR data format for many scientific instruments) was examined in [2], setting the stage for training deep learning models on high-quality experimental datasets from diverse sources. In [3], the limits of physics-based and deep learning tools …

Beyond Single Images: A Comprehensive Benchmark For Album-Level Vision-Language Understanding, Shawn Huang

Theses and Dissertations

Automatic album organization has been studied extensively over the past decades due to significant progress in digital photography. Recent Vision-Language Models (VLMs) have shown strong performance on multi-image understanding, making them natural candidates for automating album organization workflows. While VLMs’ abilities in multi-image understanding have been widely studied, their performance on album organization remains underexplored. To bridge this gap, we introduce AlbumBench, the first comprehensive benchmark for automatic album organization. Specifically, we (1) define album organization tasks as photo selection for album-specific user objectives, photo rating according to how well user intents are fulfilled, and album-specific photo grouping given a …

Digitize And Discard: A Campaign For Sustainable Av Stewardship, Cory L. Nimer, Ben Harry, Abby Beazer, Miya Jensen, Michael F. Gates

Faculty Publications

Archives and libraries face growing preservation challenges from aging audiovisual collections due to carrier degradation and playback equipment obsolescence. As the media becomes more difficult to access, its archival value decreases, leading to questions about its ongoing storage. One proposed solution has been to digitize and discard the original media, preserving the recordings as digital masters with derivative files for public access. The suggestion to reformat audiovisual materials raises questions for cultural heritage professionals, and each stakeholder group may have its own concerns. Yet as media capture and digital preservation technology improve, to maintain our program’s sustainability, we have begun …

Split Alliance And Relationship Satisfaction In Couples Therapy: Examining Split Alliance As A Process Variable, Kyla Yetter

Theses and Dissertations

The present study examined how different patterns of alliance development impact couples' relationship satisfaction, with a particular emphasis on split alliances. The retrospective sample of 1149 couples was taken from the IRB approved Marriage and Family Therapy Practice Research Network. Alliance was measured at each session with the Intersession Alliance Measure- Couples version (IAM-C). The outcome variable, relationship satisfaction, was measured before the first and last sessions of therapy with the Couple Relationship Scale (CRS). Split alliance was operationalized using standard deviation differences in partners' alliance scores, and couples were divided into three groups: 1) Never had a split alliance, …

Maternal Perspectives On Support Needs: Insights From The Fonofale Model, Sara Lani Ditto

Theses and Dissertations

This interpretative phenomenological analysis (IPA) explored the lived experiences of parents raising children with disabilities in American Samoa. Five participants across two focus groups shared their perspectives on navigating educational, healthcare, and community systems while supporting their children with disabilities. Using the fonofale model as a cultural framework, the study incorporated culturally responsive methodology including card sort activities to facilitate dialogue on potentially sensitive topics. Analysis followed the Nizza et al. (2021) IPA approach, progressing from exploratory notes to experiential statements, clustered themes, and finally overarching themes. Findings revealed four major themes: systemic burden on parents, structural and service gaps, …

Respect And Aggression In Intimate Relationships: A Grounded Theory Of Relational Responsiveness, Aaron T. Fife

Theses and Dissertations

The negative effects of aggression in intimate relationships have been well documented through research and clinical literature (Lawrence & Bradbury, 2001; Shortt et al., 2006). Conversely, the positive effects of respectful behavior are well-known (Gottman, 1994; Dew & Wilcox, 2013). This important dimension of relationships is crucial to understanding what makes up healthy and unhealthy relationships. However, little is known about how couples understand the varying types of respect and aggression within intimate relationships, nor how they are lived and experienced relationally. The purpose of this study is to explore the dyadic processes behind respect and aggression as well as …

Toward Passwordless Document Encryption, Isaac Henry Teuscher

Theses and Dissertations

Document files with sensitive information are used across nearly every industry. In recent years, cyberattacks targeting cloud-based file transfer applications have resulted in millions of sensitive documents being exposed. Although document encryption methods exist, they are often limited in usability, security, or deployability. Password-based encryption, the most widely available option, remains vulnerable to brute-force attacks, unauthorized sharing, and human error. We address these gaps in three phases. First, we present a structured comparative framework adapted from the usability-deployability-security model to evaluate nine document encryption methods across 15 design properties, identifying the benefits and limitations of current approaches. Second, we design …

Likes, Lies, And Body Esteem: The Moderating Effects Of Age, Concealment, And Gender Between Social Media And Body Esteem For Utah Adolescents, Talise Hirschi

Theses and Dissertations

Social media use has become common among adolescents and contains many messages about one's body such as the thin and muscular ideal. Many parents are learning how to help their adolescent learn how to use social media, and some adolescents may conceal their social media use for various reasons. 588 adolescents (ages 11-18; 77% White; 55% female) from Utah filled out surveys about their social media use and body esteem each school year. In a two-wave cross lag panel model, specific aspects of social media use such as time spent on social media, problematic media use (PMU), and social media …

I Will Defend My Self, Emily Ward Hawkins

Theses and Dissertations

This thesis examines caregiving and motherhood as forms of load-bearing infrastructure. Cultural narratives often portray motherhood through sentimental images of joy, tenderness, and devotion, obscuring the structural labor that sustains family life. This project examines maternal labor as a largely unseen system of support that organizes family life while often remaining backgrounded. Caregiving reorganizes time, space, ambition, embodiment, and future orientation within maternal life. Through sculptural works using architectural materials and construction systems, such as oriented strand board, blueprint racks, metal armatures, and graph paper, the project visualizes caregiving as a structural condition. These materials reference the language of architecture …

Practical Implementation Of Ethnomathematics To Increase The Engagement, Math Self-Efficacy, And Hawaiian Cultural Identity Of HawaiʻI Algebra 2 Students, Kamalani George Mamatuki Kaluhiokalani

Theses and Dissertations

The underrepresentation of Hawaiian cultural practices in mathematics education has contributed to a disconnect between students' cultural identities and their academic experiences, resulting in diminished engagement among Native Hawaiian learners. This design-based research examines the integration of ethnomathematics into high school mathematics curricula, with a focus on Hawaiian cultural practices as frameworks for teaching mathematical concepts. Participants include approximately 100 students in Hawaiʻi from a public school and a private school, as well as two mathematics teachers with varying degrees of experience in culturally responsive pedagogy and ethnomathematics. Employing a mixed-methods approach, the study collects data through classroom observations, teacher …

Influence Of Timed Repeated Readings On Grade 2 French Immersion Students' Reading Fluency And Comprehension, Kathryn Rosie Baldwin

Theses and Dissertations

This study examined the effects of Timed Repeated Reading (TRR) on reading fluency, comprehension, and reading attitudes among second grade students in a French Dual Language Immersion (DLI) program in Utah. Forty-one students from two pre-existing classroom groups participated over 11 weeks, with one class receiving TRR and the other serving as a control. Fluency was measured in correct words per minute (CWPM), comprehension through cloze tests, and attitudes using a seven-item affective survey with a four-point visual scale. A mixed between-within subjects ANOVA analysed pre- and post-test data across four intervals. Results showed significant fluency gains over time for …

Beyond The Bell Curve: Understanding Native American Academic Placements, Sarah-Margaret Clark

Theses and Dissertations

This study examined biases regarding the referrals that teachers make regarding student placement recommendations for Native American students. Special education teachers (n = 97) from around the United States completed a digital card sort task involving 24 fictitious student record cards. The student record cards contained subtle information about the ethnicity of the student, as indicated through the use of racial identification (Native American, Asian, or White) on the student records and the use of student names that may be associated with these three categories. Academic information was equal among each of these three groups. Each group contained identical male …

Calibration And Validation Of An Ogden Material Model For Thermoplastic Polyurethane In 3d-Printed Tensegrity Structures, Caleb C. Swain

Theses and Dissertations

This work is motivated by ongoing efforts within the Smart Materials, Adaptronics, and Shock Laboratory (SMASH Lab) at Brigham Young University (BYU) to develop variable-stiffness, external fixators using 3D-printed tensegrity structures. In the process of designing and evaluating these systems, the need arose to accurately model the nonlinear mechanical behavior of thermoplastic polyurethane (TPU), the primary material used in prototype fabrication. This thesis investigates how accurately a calibrated Ogden material model can predict the nonlinear mechanical response of TPU in 3D-printed tensegrity structures. Experimental data were used to calibrate the parameters of the hyperelastic constitutive model through nonlinear optimization. An …

Exploring Generative Artificial Intelligence Perceptions And Information Retrieval Behaviors Among Students: An Investigation Of Google Search And Chatgpt Queries, Annie Kiele Brown

Theses and Dissertations

Generative AI tools are rapidly reshaping how undergraduate students seek and engage with academic information, yet empirical understanding of what drives adoption and how students behave when using these tools relative to traditional search engines remains limited. This study examined undergraduate students’ information-retrieval behaviors and perceptions when using ChatGPT compared to Google Search, using the technology acceptance model (TAM; Davis, 1989) extended to include trust (Gefen et al., 2003) as the guiding framework. An embedded mixed-methods design was employed, in which Likert-scale perception ratings provided a structured quantitative signal and thematic analysis of semi-structured interviews, structured information-retrieval tasks, and concurrent …

Unlocking Potential: Teachers' Perspectives On 504 Accommodations For Students With Adhd, Haley Stubbs

Theses and Dissertations

This study examined high school teachers' perspectives on the development, implementation, and effectiveness of Section 504 accommodations for students with ADHD. Five secondary teachers from a public high school participated in a focus group, and data were analyzed using inductive thematic analysis. Findings indicate that teachers report limited understanding of the 504 process, minimal involvement in eligibility decisions, and little training on how to implement accommodations. Teachers describe accommodations as vague and difficult to apply consistently within the constraints of secondary classrooms, often relying on universal classroom practices and student self-advocacy to meet student needs. Teachers also question whether accommodations …

Engineering 3d Optical Interconnects And Low-Power Radio Frequency Gaze Tracking, Blake P. Crosby

Theses and Dissertations

This thesis presents two independent research works in optical in- terconnects and radio-frequency (RF)-based gaze tracking. The first work demonstrates a silicon optical waveguide fabricated from four through-silicon vias (TSVs) produced using two-photon-absorption- assisted photo-electrochemical etching. Unlike conventional TSV fabrica- tion methods, this approach enables highly localized, non-line-of-sight etching in silicon using a focused femtosecond laser. Four approximately 5 μm diameter TSVs were etched through a 200 μm silicon wafer in a 7 μm by 7 μm pattern, leaving a central silicon region that functions as a waveguide. The fabricated structure achieved an aspect ratio of approxi- mately 40:1 with …

Effects Of A Peer Mentoring Program For Adolescent Newcomers On Feelings Of Peer Connectedness And School Belonging, Eden Elizabeth Moon Barnhill

Theses and Dissertations

There is a significant lack of empirical evidence regarding the effectiveness of peer mentoring to support newcomer students, particularly for refugee populations. This study evaluated the effects of a peer mentor program for newcomer students on their feelings of peer connectedness and school belonging in a high school setting. Participants were made up of 15 newcomer student mentees across three high schools. Measures were administered pre- and post-intervention, and participants were also interviewed about their experience. Results indicated no quantitative findings of significance but did yield a small positive effect size for peer connectedness. According to qualitative data, many participants …

Hierarchical Parcel Swapping: A Novel Model In Turbulence, Masoomeh Behrang

Theses and Dissertations

Turbulent mixing plays a central role in a wide range of engineering and natural systems, particularly in reactive flows where turbulence--chemistry interactions strongly influence reaction rates, flame structure, and emissions. Accurately modeling these interactions remains a major challenge due to the multiscale and stochastic nature of turbulence, as well as the nonlinear coupling between transport and chemical kinetics. This dissertation develops and evaluates the Hierarchical Parcel Swapping (HiPS) model, a fully stochastic framework designed to represent turbulence-driven transport and scalar mixing without relying on traditional gradient-based closures. HiPS is investigated both as a standalone turbulence model and as a subgrid …

Service Providers' Descriptions Of Survivors' Experiences With Mental Health Treatment, Melanie Gonzales Puente

Theses and Dissertations

Human trafficking survivors experience significant mental health challenges and barriers that limit their engagement towards treatment. A qualitative study was conducted that included semi-structured interviews of 33 professionals working with survivors of human trafficking in the United States. Findings indicate that survivors' engagement in treatment is limited by mistrust of providers, stigma, and a lack of access to services. Providers emphasize that addressing basic needs (e.g., safety and housing) must occur before engaging in trauma-focused therapy. Positive outcomes are associated with strong therapeutic relationships, autonomy, trauma-informed, individualized care, and offering comprehensive services. Furthermore, mental health providers should have certain abilities …

Fear Appeal Advertising As A Tool For Preventative Medicine And Chronic Disease Mitigation, Samuel J. Moore

Undergraduate Honors Theses

Chronic disease refers broadly to a group of diseases that develop and progress as individuals age, that last 1 or more years, and that require ongoing medical attention or limit activities of daily living, or both (“About chronic diseases,” 2026). Chronic disease is most often associated with years of compounding effects of poor nutrition and physical inactivity. Since negative emotion-based advertising, also known as “fear campaigns,” have been shown to be effective forms of communication for other health related topics (Huang et al, 2017), we sought to test a fear campaign’s potential to discourage unhealthy physical activity practices in young …

Exploring The Relationship Between Body Composition, Bmi, And Sleep Outcomes Among Nepalese Brick Workers, Zoe C. Peterson

Undergraduate Honors Theses

Sleep is a critical determinant of metabolic health, with extensive evidence linking insufficient and fragmented sleep to increased adiposity and obesity risk in high-income populations. However, these relationships remain poorly understood in labor-intensive, low-income occupational settings. This study examined associations between objectively measured sleep characteristics using accelerometry and body composition among a population of Nepalese brick workers, a group of people exposed to substantial environmental and occupational stressors.

A secondary cross-sectional analysis was conducted using data from 233 adult brick workers in the Nepal Kathmandu valley. Sleep metrics – including total sleep, wake after sleep onset (WASO), and number of …

What Do Highly Successful Families Of Faith Teach Us About Trust?, Caleigh E. B. Kerr

Undergraduate Honors Theses

This study examined trust among diverse families of Abrahamic faiths across the United States. The 292 families who were part of this national study represent significant religious breadth (over 20 total denominations), geographic scope, and racial diversity, with 51% of the participants being racial/ethnic minorities. Married participants had at least one child. Education levels of participants ranged from G.E.D to Ph.D., with varying socioeconomic statuses. Semi-structured interviews were conducted with participants. Couples were hand-chosen by their respective religious leaders as being both relational and religious exemplars.

Using the qualitative responses of participants, a word search was conducted. Responses relevant to …

Third Space Thinking In The Secondary School Writing Center: A Model For A More Just Approach To Education, Annika Peacock

Undergraduate Honors Theses

This thesis examines the ways that Homi Bhabha’s postcolonial Third Space theory aligns with writing centers, and more specifically writing centers in secondary schools. The thesis introduces Third Space theory in six characteristics and the ways that writing centers are Third Spaces. Next, through content analysis, 25 mission statements from secondary school writing centers are qualitatively coded to reveal what writing centers prioritize and understand about their center. The thesis finishes with a framework called Third Space thinking, providing examples of how writing centers as Third Spaces can help to develop a more just and equitable educational experience for students …

Socioeconomic And Cultural Factors In Shared Book Reading Interactions, Jessica Wood Folsom

Theses and Dissertations

This study examined socioeconomic and language factors influencing the implementation of shared book reading behaviors following participation in caregiver-trained shared book reading workshops. While shared book reading is known to support language and literacy outcomes of children, less is known about how socioeconomic and language differences affect its implementation. Eighteen participants were recruited from a local preschool and completed a 34-question pre-survey prior to attending a 2-week shared book reading workshop, followed by a 27-question post-survey. Parents reported on literacy practices, confidence level, and shared book reading behaviors. Results indicated increased positive shared book reading behaviors and caregiver confidence following …