Digital Commons Network^™

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 …

The Efficacy Of Open Educational Resources On Achievement Outcomes In Higher Education Institutions, Charles Trevor Alder

Theses and Dissertations

Achievement gaps remain a concern in higher education, reflected in differences in academic performance, retention, and persistence. These gaps often affect students from lower socioeconomic backgrounds and underserved populations. Open educational resources (OER) have been suggested to reduce financial barriers and support student success. This study examined whether student-level and institutional-level factors predict academic performance in a business management course using OER. Average quiz scores were collected from students across 12 higher education institutions and analyzed using hierarchical linear modeling. Colleges were included in the analysis to determine whether outcomes differed based on the proportion of minority and Pell-eligible students. …

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 …

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 …

"I'Ve Just Re-Read The Aeneid Again": Virgil's Thematic Influence As Depicted In Katabatic Journeys In The Fiction Of C. S. Lewis, Henry Young

Theses and Dissertations

Inspired by his studies in Classical, Medieval, and Renaissance literature, C. S. Lewis incorporated echoes of Virgil in his fiction, especially in katabatic journeys. In his scholarship, he identified Virgil's Aeneid as "secondary epic" which contains the Christian-like theme of vocation in the face of transition. Traces of this theme are evident in Lewis's fiction, expressed through mythical katabatic imagery. Katabasis, for Lewis, appears as a Pagan pattern fulfilled in Christ and experienced by His disciples through conversion. Lewis's characters, though ordinary people, must learn to accept divinely given vocations which then propel them into katabatic sequences that inspire belief …

Design Principle For Staple-Mediated Stabilization Of Peptides And Proteins, Samantha C. Hatfield

Theses and Dissertations

Macrocyclization, or stapling, has emerged as a powerful strategy to enhance the stability and function of peptides and proteins by constraining their conformational ensembles. Stapling can improve thermodynamic stability, increase resistance to proteolytic degradation, and enhance biomolecular recognition, making it particularly valuable for the development of peptide-based therapeutics. Despite these advantages, staple design remains largely empirical, relying on iterative screening of linker chemistries, lengths, and attachment sites. This trial-and-error approach limits scalability and hinders the rational design of stabilized peptide systems. In this work, we address this challenge by integrating large-scale experimental datasets with molecular dynamic simulations to develop predictive …

Don't Self-Opt Out Of Career Opportunities: Proceed With Confidence, Valerie Mendoza

Faculty Publications

While reflecting on your career in the past, have you ever stepped back from an opportunity that you wanted because you doubted yourself? In the workplace, confidence often gets mistaken for competence, and that means talented employees can be overlooked simply because they hesitate. The truth is that confidence isn’t something you’re born with. It’s a skill you can build. This session will get you started on building that skill.

We’ll explore practical strategies to strengthen your confidence starting today. We’ll also break down the key differences between how confident individuals act compared to those who aren’t, so you can …

Differentiation Of Self As A Therapist Effect In Couple Therapy, Nathan D. Knebel

Theses and Dissertations

Murray Bowen proposed that a therapist's level of differentiation of self influences therapeutic effectiveness, particularly in clinically distressed relational systems. Although existing literature has demonstrated that therapist effects account for a meaningful portion of variance in couple therapy outcomes, differentiation of self has received limited empirical attention as a therapist-level predictor. The present article proposes a framework for empirically examining Bowen's hypothesis by investigating whether therapist differentiation predicts trajectories of couple relationship quality across treatment. Additionally, the article explores theoretical pathways through which therapists may increase their level of differentiation, assuming Bowen's hypothesis is supported.

A Parallelized Multi-Component Radiation Testing Methodology For Systems-On-Chip, Weston M. Smith

Theses and Dissertations

As the space industry expands, there is an increased reliance on system on chip (SoC) devices in high radiation environments. The reliability of these devices becomes crucial, especially in space applications. The industry's rapid growth has led to a massive expansion in the use of Commercial Off-The-Shelf (COTS) components. Electronic systems are vulnerable to single event upsets (SEUs) and the failure modes caused by SEUs are not fully understood, especially for COTS SoCs. Standard radiation testing techniques of SEUs use a single core of a multi-core processor to monitor bit flips. In this work, we present a parallelized radiation testing …

Collaborative Practices Of School-Based Professionals In Conducting Multilingual Assessments, Megan Buckley

Theses and Dissertations

The current study evaluates the perceived best practices and current actual practices of school-based professionals in interprofessional collaboration and in conducting multilingual assessments. The participants consisted of 341 professionals from across the United States in the following groups: speech language pathologists (SLPs), assistants, special education teachers, general education teachers, specialists, school psychologists, and administration. Participants responded to an online Qualtrics survey with a total of 74 possible items regarding demographics, caseload, multilingual assessment practices and beliefs, and interprofessional collaboration practices and beliefs. Results were analyzed with descriptive and inferential statistics. Results indicate that participants recognize the need for interprofessional collaboration …

Developing Custom High Resolution 3d Printers For Microfluidic Device Fabrication, Dallin Scott Miner

Theses and Dissertations

The advancement of microfluidics in biomedical diagnostics and lab-on-a-chip systems is increasingly dependent on the ability to fabricate complex, three-dimensional architectures with high-resolution negative features. While Digital Light Processing Stereolithography (DLP-SLA) has emerged as a leading fabrication method, it remains constrained by a fundamental trade-off between feature resolution and build volume, as well as challenges regarding fabrication consistency and design accessibility. This dissertation presents an integrated ecosystem of hardware, materials, and software designed to overcome these barriers and enable scalable, high-resolution microfluidic fabrication. We first introduce a novel multi-resolution 3D printing technique utilizing a dual-optical engine architecture, comprising a Very …

Speech Motor Variability In Typical Speakers With Blocked, Predictable, And Unpredictable Stimulus Order, Jocelyn L. Turley

Theses and Dissertations

This study examined the effect on spatiotemporal variability of speech in reading threesyllable, five-syllable, and eight-syllable phrases in blocked, predictable, or unpredictable order. This was done to address the need in the field for a greater understanding of the interactions of stimulus length and stimulus presentation order. The experiment was completed with 35 typically speaking young adult participants. Participants read variable stimuli in the different presentation orders to measure the spatiotemporal variability in different conditions with electromagnetic articulography and audio recording software tracking their speech. The statistical analysis main condition effect revealed a significant impact on all phrase lengths between …

Effects Of A Complexity-Based Approach For Treatment Of Be Verbs In Children With Developmental Language Disorder: A Single-Case Design, Megan Shawnee Rowe

Theses and Dissertations

The purpose of this study is to examine whether a complexity-based treatment approach improves the production of BE verb structures in a child with developmental language disorder (DLD). One school-age child with morphosyntactic deficits participated in a single-case AB experimental design. Treatment targeted a complex structure (auxiliary BE questions), and performance was measured using experimental probes, a narrative language sample, and the Test of Early Grammatical Impairment (TEGI). Results indicate a functional relationship between treatment and increased accuracy of the treated structure, with a medium effect size (τ = .695, p = .019). In addition, the participant demonstrated generalization to …

Prosodic Characteristics Of People With Moderate Broca's Aphasia: Measures Of Pitch And Intensity, Morgan Smith Lambert

Theses and Dissertations

Aphasia is an acquired neurogenic language disorder commonly treated by speech language pathologists (SLPs). People with aphasia (PWA) experience various language deficits which impact their ability to effectively communicate with their environment. One of these deficits which impacts individuals with non-fluent aphasia is dysprosody. The purpose of this study is to acoustically evaluate the pitch and intensity of individuals with moderate Broca's aphasia along with age and gender matched control participants across a variety of task types in order to help SLPs better understand how to effectively assess and treat prosody in PWA. This study is an extension of Pickard …

Evaluating C-Band Scatterometer Images For Estimating Deforestation In The Amazon Rainforest, Alex Mcbride

Theses and Dissertations

Satellite-based active microwave sensors have been successfully employed for a wide range of vegetation and soil studies. Spaceborne microwave instruments have proven particularly useful for wide-scale monitoring of the vegetation, especially under conditions that limit the effectiveness of high-resolution optical sensors. Satellite scatterometry can be used to detect and model deforestation in the Amazon rainforest by correlating changes in the C-band backscatter data to observed changes in vegetation coverage. The exploratory methodology developed in this paper applies the longest continuous microwave satellite record to the problem of deforestation. The backscatter measurements taken by the ERS and ASCAT missions provide more …

Lack Of Effects Of Autistic Traits On Adjunct Control Processing, Alyssa Crezee

Theses and Dissertations

Autism has effects on social, communication, and information processing factors (American Psychological Association, 2022; Happé & Frith, 2006). Sentence processing is a type of information processing that synthesizes both discourse and local information (e.g., syntactic and morphological). This thesis explores potential effects of autistic traits on sentence processing in the context of adjunct control structures. In a two-part study, adult English L1 participants (n=118) were administered a self-paced-reading (SPR) task with comprehension and acceptability questions for task 1. Task 2 consisted of an online survey containing three standardized autism questionnaires: the Autism Quotient (AQ; Baron-Cohen et al, 2001), the Broad …

Examining The Effects Of A Complexity-Based Treatment For One Child With Down Syndrome Using Single-Case Design, Markelle Luddington

Theses and Dissertations

Common language difficulties observed in English-speaking children with Down syndrome (DS) and developmental language disorder (DLD) include challenges with marking tense and agreement on verbs, particularly with BE verbs. In addition, difficulties with syntactic movement may further exacerbate these challenges, often resulting in increased omission errors. A complexity-based approach to treatment target selection has been suggested as one method to address these needs. Therefore, this single-case design study examined the effects of a complexity-based treatment approach for one participant with Down syndrome. Specifically, this study investigated the effects of targeting a more complex treated structure, auxiliary BE questions, and the …

Sequencing Of Chenopodium A-Genome Diploids To Identify Potential Mechanisms Of Speciation: A Preliminary Study, Riley Roser

Theses and Dissertations

The genus Chenopodium is of increasing significance, mainly due to allotetraploid quinoa (C. quinoa Willd.,2x = 4x =36, AABB genome) becoming globally recognized for its high nutritional value and tolerance for stress. Diploid A-genome relatives of quinoa in the Western Hemisphere have shown speciation patterns congruent to adaptive radiation, particularly in the North American continent, where a number inhabit ecological niches while others form mixed populations where they are sympatric. Characterization of the genetic mechanism(s) underlying this rapid speciation, could clarify their potential usefulness for improving quinoa . Previous whole-genome assemblies of AA diploids C. watsonii A. Watson and C. …

Context-Sensitive Control-Flow Analysis For Non-Standard Language Semantics, Tim Whiting

Theses and Dissertations

Control-Flow Analysis (CFA) is a static technique for understanding the execution of higher-order programs without running the code. CFA aids in identifying bugs, assisting program comprehension, and exposing optimization opportunities. Constructing a CFA typically begins with an idealized evaluator--such as an abstract machine or interpreter--and proceeds by approximating components of evaluation to ensure that: (a) the analysis is sound (representing all possible behaviors), and (b) the analysis is guaranteed to terminate (finitely representable). These constraints necessitate a loss of precision, providing an approximation of the values that flow to program locations rather than exact execution traces. This imprecision causes the …

Testing The Moderating Effect Of Self-Compassion On The Relationship Between Perfectionism-Related Discrepancy And Perceived Social Support From Family, Marinne Hammond

Theses and Dissertations

Perfectionism involves an insistence on outstanding performance on tasks to an extreme level. More specifically, perfectionism-related discrepancy is when one subjectively sees a gap between their performance and their expectations for how they should perform. Perfectionism may be linked to mental health issues, such as anxiety, depression, eating disorders, and social disconnection. The perfectionism social disconnection model asserts that perfectionism can also lead to social withdrawal. Self-compassion involves the acceptance of imperfection; it has been associated with higher perceived social support and has also been shown to attenuate the relationship between perfectionism and psychological distress. This study aimed to further …

A Qualitative Study Of People With Aphasia And Their Experiences With The Bible, Marin Li

Theses and Dissertations

This phenomenological study explores the lived experiences of 4 individuals with aphasia (1 female, 3 male; 3 Catholic, 1 Lutheran) regarding their relationship with and engagement with the Bible. Participants completed three remote sessions via Zoom. In Session 1, participants completed the Test of Nonverbal Intelligence, Fourth Edition, (TONI-4), and the remote Quick Aphasia Battery (QAB). In Session 2, participants engaged in a semi-structured interview led by the researcher. In Session 3, the researchers presented preliminary analysis to receive feedback from participants. Student researchers coded interview transcriptions to develop a structured codebook. Five primary themes describe the participants' experiences with …

A Peer Evaluation Of Safety At Signalized Intersections, Auzton Mitchell Stutts

Theses and Dissertations

The Utah Department of Transportation (UDOT) has made significant efforts to reduce crashes at signalized intersections and is constantly seeking to improve safety across the state. The purpose of this research is to quantify and evaluate the safety rates and frequencies at signalized intersections in Utah compared to other states. Once the crashes have been quantified, the secondary purpose is to determine why there may or may not be differences. A survey was developed to understand how states analyze, prioritize, and implement safety at signalized intersections, including different policies, procedures, and countermeasures. Crash data from eight states were analyzed and …

Data Science In The Utah Draft K-12 Standards Of Mathematics, Kate Webster Green

Theses and Dissertations

In today's data-driven world, the field of data science is becoming increasingly important. Research has shown that more job listings in Utah require applicants to have data science skills than ever before. Due to this growing demand, there is a push to begin data science instruction in grades K-12; however, what data science instruction is in grades K-12 is not yet clearly defined. Previous research has identified the skills and processes that make up data science in grades K-12, and several states and research groups have begun developing and implementing data science standards and learning progressions. This study analyzes the …

Design Of Precise Hinges For Optical Space Arrays, Jacob Sutton

Theses and Dissertations

Deployable origami-based arrays offer significant advantages for space optical systems due to their ability to stow compactly and deploy to a large surface area. However, achieving the panel alignment precision required for optical applications remains an open challenge, particularly for non-rigid-foldable patterns such as the flasher, where large relative motion during deployment and geometric constraints at panel interfaces limit the effectiveness of traditional hinge designs. This thesis addresses the precision alignment challenge through the design, prototyping, and experimental testing of novel passive precision hinges for rigid-panel origami-based deployable space arrays. A compact kinematic coupling hinge incorporating Lamina Emergent Torsional (LET) …

Exploring The Impact Of Self-Compassion And Mindfulness Interventions On Teacher Stress, Feedback Delivery, And Student Behavior In Elementary Classrooms, Coral Lynn Koller

Theses and Dissertations

Teacher stress is a persistent challenge that negatively affects educator well-being, classroom climate, and student outcomes. Although the prevalence and impact of teacher stress are well-documented. This single-case multiple baseline study investigated the effects of a structured self-compassion and mindfulness intervention on teacher stress, delivery of positive feedback, and student on-task behavior in three general education elementary teachers. Over a 6- week period, participants engaged in mindfulness and self-compassion practices, tracked through a combination of self-report scales (Daily Stress Response Scale, Perceived Stress Scale, SelfCompassion Scale, and Five Facet Mindfulness Questionnaire) and pre- and post-classroom observations. Results indicated reductions in …

Development Of A Low-Cost Roadside Monitoring System For Identifying High-Emitting Heavy-Duty Trucks, Spencer Larson

Theses and Dissertations

This project investigated the feasibility of using low-cost sensors to identify high-emitting heavy-duty diesel trucks through roadside emissions monitoring. A sampling system was designed and tested in both laboratory and field environments to evaluate sensor performance and measurement reliability. In the laboratory, controlled engine testing enabled direct comparison between low-cost sensors and research-grade instruments to establish baseline accuracy, response time, and sources of uncertainty. These tests demonstrated that while low-cost sensors exhibit greater bias and slower response, several are capable of detecting transient emission events. Field deployments revealed that real-world conditions, such as plume dilution, spatial variability, and short exposure …

Wounded Domestic Ecologies: Ecofeminist Readings Of Gendered Trauma In Purple Hibiscus, Erere Victory Iwhi

Theses and Dissertations

This thesis examines Chimamanda Ngozi Adichie's Purple Hibiscus through an ecofeminist and postcolonial ecocritical lens, developing the concept of "wounded domestic ecology" to analyze how gendered violence operates within domestic space. Drawing on trauma studies, particularly J. R. Kurtz and Rob Nixon's concept of slow violence, it argues that harm in the novel is accumulative, produced through repetition, surveillance, ritual, and spatial regulation. Eugene's household functions as an environment that disciplines bodies, governs language, and embeds fear into everyday life. In contrast, Aunt Ifeoma's home in Nsukka offers a counter-ecology structured by sound, shared labor, and dialogic authority, interrupting the …