Digital Commons Network^™

Utilizing Pine Needles To Compare Spatial Profiles Of Polycyclic Aromatic Hydrocarbons (Pahs) In Two Urban Areas, Autumn Jensen

Undergraduate Honors Capstone Projects

Polycyclic aromatic hydrocarbons (PAHs) are an important class of semivolatile air pollutants known for their adverse health impacts. This research used conifer needles as passive air samplers to create spatial maps of two Utah cities (Rose Park and Spanish Fork) to compare overall PAH exposure and identify any differences in their congener profiles or PAH “fingerprints”. Conifer needles were chosen due to their prevalence as a passive air sampler in previous research and their ubiquity in urban and suburban environments. Second year needles were collected and the concentrations are considered to be an annually averaged view of the PAH concentrations …

Designing Effective Writing Instruction For Learners With Complex Support Needs, Makayla Lyn Norton

Undergraduate Honors Capstone Projects

Writing is a composite skill that is a prerequisite to academic, social, and employment success. Only 5% of students with disabilities demonstrated proficiency in writing in the 2010 National Assessment of Education Progress. Effective writing interventions for learners with Complex Support Needs (CSN) are limited. This Honors Capstone focused on designing an effective writing curriculum for this population of students. The developed curriculum was designed to incorporate explicit systematic instruction to reach behavioral fluency in writing simple sentences the describe a series of images. The final project includes a literature review on effective writing instruction for students with (CSN), a …

Beyond The Canon: From Classical Foundations To Contemporary Relevance In Shaping Tomorrow's Musicians, Lauren N. Tougas

Undergraduate Honors Capstone Projects

Undergraduate music programs in the United States have historically centered ensemble-based instruction on the Western classical canon in order to cultivate technical mastery, stylistic fluency, and disciplined collaborative musicianship. This pedagogical model has proven durable and remains foundational to professional orchestral and choral performance practice. Canonical repertoire continues to anchor audition requirements, institutional programming, and degree structures across institutions of higher education. Yet the contemporary professional landscape has evolved into a far more diversified artistic ecosystem characterized by stylistic hybridity, living composer integration, interdisciplinary collaboration, constrained rehearsal models, and portfolio-based career trajectories.

This Honors Capstone investigates the relationship between undergraduate …

Understanding Vaccine Hesitancy In Veterinary Medicine: A Review Of Client Attitudes, Grace Moore

Undergraduate Honors Capstone Projects

Uncertainty toward vaccination, long recognized as a public health concern in human medicine, is increasingly recognized within veterinary contexts, posing risks to both animal and community health. This literature review examines the development, causes, and implications of reduced vaccine confidence in veterinary medicine, with emphasis on small animal and some large animal practices. The review combines historical and current research to explore how vaccination perceptions have evolved among veterinarians and clients, and how factors such as the COVID-19 pandemic have shaped current attitudes.

The literature highlights recurring themes surrounding vaccine reluctance in veterinary settings. Client perceptions of safety, efficacy, and …

Challenging Myths In Speech-Language Pathology: A Scientific Review Of Augmentative And Alternative Communication (Aac) Use, Bilingualism, And Late Talking, Mariah Morris

Undergraduate Honors Capstone Projects

Persistent myths within the field of speech-language pathology continue to influence clinical decision-making and contribute to biases experienced by both providers and clients. This scientific review examines common misconceptions surrounding late talking, bilingualism, and augmentative and alternative communication (AAC) by evaluating current evidence-based research. Specifically, this review addresses three central questions: Do children outgrow late talking? Does bilingualism cause language delay in children? Does AAC hinder speech development? 

An analysis of multiple peer-reviewed studies revealed little statistical support for the belief that bilingualism or AAC use causes language delays. Instead, research indicates that factors such as limited access to language-rich …

Restorative Justice In Cache Valley: Building Community Resilience Through Restorative Practices, Rivkah Haubner

Undergraduate Honors Capstone Projects

Restorative justice as a field of study is primarily applied to criminal justice proceedings or similar topics. As such, its use as a tool in political organizing is an underdeveloped field. Due to its Indigenous history, restorative justice has intrinsically ant-colonial, anti-imperial, and anti-racist roots and is therefore already situated within the ethos of many progressive movements. Historically, radical movements within the United States and across the world experienced both internal and external pressures that undermined their goals. Restorative justice offers a framework through which to understand political action as a whole and specific tools to address internal conflict within …

Automating Building Feature Recognition In Digital Twin Models Using Computer Vision, Jaron Harbison

Undergraduate Honors Capstone Projects

Standard 3D scans treat all surfaces as generic geometry, but Wi-Fi signals don't. A signal drops by a different magnitude through a wooden door than a concrete wall. Without labeling these materials, Internet Service Providers (ISPs) cannot accurately predict "dead zones". This project addresses that gap by creating a machine learning model that identifies structural and architectural features. This includes features such as walls, doors, windows, and columns directly from RGB-D (Red, Green, Blue, Depth) point cloud data. 

I constructed the model on a custom U-Net architecture featuring a symmetric encoder-decoder structure with skip connections, trained on the StructScan3D dataset …

A Curriculum Development Study: Crafting And Teaching Curricula For Ell Students In China, Kayleigh Kearsley

Undergraduate Honors Capstone Projects

When teaching English Language Learners (ELL), it is important to understand the best practices and tools available to teach these students effectively and engagingly. In this curriculum development study, I examine and utilize effective and engaging practices for teaching ELL students and offer eleven lesson plans taught to a native Chinese speaker that reflect the implementation and development of these practices. Research consisted of both practical and theoretical sources concerning critical pedagogy for teaching ELL students. An understanding of students’ background shapes an understanding of language transfer, thus providing a more tailored teaching approach (Swan & Smith, 2001). The scaffolding …

Behind The Smile: A Qualitative Study On Dentist Burnout And Workplace Satisfaction In Cache Valley, Luke Thomas Hatch

Undergraduate Honors Capstone Projects

This qualitative research study examined satisfaction, stressors, and burnout among dental professionals in Cache Valley, Utah. Eight practitioners at various points in their careers were interviewed with a range of specialties including general dentistry (n = 3), pedodontics (n = 3), oral and facial surgery (n = 1), and orthodontics (n = 1). Analysis of the interviews showed that level of clinical autonomy was a primary factor influencing burnout levels. Stress levels in more experienced practitioners and owners tended to be lower than those who worked in multiple practices (multi-doctor) or with corporations. Individuals in these environments reported higher levels …

Exploring The Role Of Online Spaces In Understanding Young Adult Mental Health Attitudes: Internalizes Stigma, Help Seeking Behaviors, And Mental Health Centered Content, Harley Thomas

Undergraduate Honors Capstone Projects

Mental Health is an ever-rising concern in the United States, with many people experiencing some form of mental health concerns. One new tool used to fight the mental health crisis has been online content on social media sites. Few studies have been done to see the actual effect of the rise of mental health content and terminology used online, especially through the lens of those who have lived experience. We conducted an online survey via Prolific to gather quantitative and qualitative data from 287 young adults in the United States, ages 18-25, to examine their exposure to mental health content, …

Effects Of Cannabinoid Agonist Win 55-212-2 On Latent Inhibition, Ashley Peterson

All Graduate Theses and Dissertations, Fall 2023 to Present

The endocannabinoid system (ECS) is a modulatory system that helps regulate brain functions, including learning and memory, influencing processes such as latent inhibition (LI). LI refers to the slower association formed when a familiar event is paired with a new outcome, compared to the association of an unfamiliar event. LI is a process that is often disrupted in individuals with schizophrenia and is known as a cognitive symptom. This study aimed to determine whether the drug WIN-55-212-2 (WIN), which interacts with the ECS, influences the process of LI using a fear-conditioned response procedure. The results found no significant interaction among …

Constraint-Aware Metaheuristic Optimization For Experimental Design, Benjamin N. Fuller

All Graduate Theses and Dissertations, Fall 2023 to Present

Designing experiments becomes much more challenging when many variables and strict constraints are involved, as is common in modern science and engineering. This thesis introduces a new computational and mathematical framework that efficiently searches for optimal experiments in complex, high-dimensional spaces where traditional methods fail. By combining geometric techniques with flexible optimization algorithms like particle swarm optimization, our methods handle difficult constraints while scaling to real-world problems. Built in the high-performance Julia programming language and released as open-source software, this work bridges advanced theory with practical tools, offering researchers a powerful and accessible way to design better experiments under realistic …

A Low Power Fpga Compute Array For Machine Learning And Artificial Intelligence Applications, Todd Wilson

All Graduate Theses and Dissertations, Fall 2023 to Present

Modern small satellites often lack the ability to analyze their data in real time, relying instead on downlinking raw measurements to Earth before any scientific interpretation can occur. This delay restricts missions that require rapid awareness of environmental or space-weather events. This thesis presents the Low-power Array for Cubesat Edge Computing Architecture, Algorithms, and Applications (LACE-C3A), a hardware platform designed to enable in-orbit data processing within the power and volume limits of CubeSat-class spacecraft. 

LACE-C3A uses a modular cluster of flash-based FPGAs, which offer low power consumption, radiation resilience, and in-flight reconfigurability. The system consists of a Controller board responsible …

Ionospheric Plasma Electron Density Measurement And Theory Using Impedance Probe Techniques, Justin Wellington

All Graduate Theses and Dissertations, Fall 2023 to Present

The ionosphere plays a critical role in how radio frequency (RF) signals, like those used in Global Position System (GPS) satellite communications, travel through space. Disturbances in the ionosphere, such as equatorial plasma bubbles (EPB), scatter these signals and cause communication dropouts or navigational errors. To study these conditions, spacecraft use instruments that measure the surrounding plasma directly. One of these instruments is an impedance probe, which applies a small electrical signal to a sensor and determines electron density from the measured impedance.

This thesis improves the modeling and interpretation of impedance probe measurements. A numerical method is developed that …

Design Of A Low-Power Magneto-Inductive Magnetometer, Rowan Antonuccio

All Graduate Theses and Dissertations, Fall 2023 to Present

Measuring magnetic fields in space helps scientists understand phenomena that can affect satellite communications and navigation systems on Earth. This research develops a new low-power magnetic field sensor for spacecraft that improves upon existing designs by moving the sensitive parts away from electrical interference and using energy-efficient digital electronics for precise measurements. The sensor’s power-efficient design is particularly important for small satellites, where power is limited and must be carefully managed. It will fly on future NASA missions to study disturbances in Earth’s upper atmosphere that can disrupt radio signals and GPS. This work contributes to our ability to better …

Understanding The Equestrian Learner: A Sociomaterial Analysis Of Equestrian Learners, Anna Lloyd

All Graduate Theses and Dissertations, Fall 2023 to Present

Limited research has been done on equestrian riders actively participating in training programs. To better understand these equestrians, this study examined how elements in their learning environments influenced their learning. Data was collected through interviews with two active, competing adult female members of the United States Hunter Jumper Association. Key findings from analyzing these equestrians’ relationships with different elements in their learning environment include the finding that equestrians shift between viewing horses as material objects or social partners, depending on the context. It was also seen that an equestrian’s skill is not dependent solely on the rider, but is influenced …

Aerodynamic Parameter Estimation For A Scaled F-16: A Simulation-Based Sensitivity Analysis, Kathle C. Tischner

All Graduate Theses and Dissertations, Fall 2023 to Present

The physical motion of an aircraft is determined by the resulting forces and moments acting on the aircraft. These forces and moments can be defined as a mathematical equation where the control deflections, rotation rates, and orientation of the aircraft are multiplied by individual constants and summed together to define the entire force or moment. This method results in a highly accurate model that defines the motion of the aircraft at low angles of attack and sideslip. Initial calculations of the aerodynamic model are created based on analytical estimations based on the physical properties of the aircraft. Additional refinement of …

Sequential Products Of Anaerobic Denitrification In Calcareous And Noncalcareous Soils By Use Of The Gas Chromatograph, Grant S. Cooper

All Graduate Theses and Dissertations, Fall 2023 to Present

The sequential products of anaerobic denitrification were determined on seven Western soils (four alkaline, two acid, and one neutral) by soil and gas analysis. The soils with 1% alfalfa and added KNO3 were incubated at moistures slightly greater than field capacity and with an atmosphere of He. The soils and gases were periodically analyzed and balance sheets prepared. The sequence of NO3-->NO2-->N2O-->N2 operated in all soils. The rates of nitrogen interchanges and maximal amounts of nitrate, N2O2 and N2 were determined. From this data it was postulated that the rate-limiting process for denitrification in acid soils is …

Online Act Guide For Sub-Clinical And Clinical Insomnia Among College Students, Guadalupe "Gabe" San Miguel

All Graduate Theses and Dissertations, Fall 2023 to Present

College students are shown to have more sleep difficulties, specifically insomnia. These sleep difficulties compared to the general public due to the college environment (for example increase screen time, sedentary time, or alcohol use). Students with reported sleep difficulties have ties to lower GPA and lower odds of graduation. That is why this dissertation conducted a comparison between an online version of Acceptance and Commitment Therapy (intervention) to a placebo condition among college students with insomnia to help determine if the intervention had better outcomes over time. Each condition (intervention = 39; placebo = 40) completed questionnaires at the start …

Relaxed Convex Approximation For Optimal Control In Cislunar Space, Jondavid K. Hertzel

All Graduate Theses and Dissertations, Fall 2023 to Present

This thesis develops a method of optimal control for a spacecraft in the region between the Earth and the Moon known as cislunar space. The optimal control method is developed through a modern optimization technique called “convex relaxation” to achieve a formulation that can be reliably solved by numerical computation tools. The primary research objective is to evaluate the efficacy of this method in accommodating the physical thrust constraints of a spacecraft. This approach is tested in simulation with an unstable halo orbit around the Moon in the circular restricted three-body problem (CR3BP) model. The simulation incorporates realistic disruptions from …

Adversarial Heterogeneous Agent Learning For Robotic Systems: A Framework For Coordinated Competitive Behaviors, Christopher T. Allred

All Graduate Theses and Dissertations, Fall 2023 to Present

Autonomous robot teams must move reliably, explain their actions, and work together—even in changing or adversarial settings. We present a structured, three-stage pathway that builds coordinated team behavior from strong single-robot skills. First, we develop robust legged-robot locomotion and interpretability using only internal actuator signals. From these proprioceptive cues, robots learn to classify terrain and predict short-term power use, enabling energy-aware movement without external sensors. We further analyze learned behaviors with motif discovery to reveal recurring sensor–action patterns, which clarify how agility emerges and guide reward design. Second, we compose these skills into heterogeneous teamwork using centralized training with decentralized …

An Autohistoria-Teoría Of A Pasifika Neptantlera, Belinda 'Ofakihevahanoa Fotu

All Graduate Theses and Dissertations, Fall 2023 to Present

This study was an autohistoria-teoría, a type of autoethnography, where I focused on my writing process as a Pasifika researcher creating a middle- grade fiction. As the researcher, my questions delved into how I engage in writing for a majority-culture dominated publication house in a Western-world writing genre while maintaining the cultural significance of the ancient Pasifika mythologies I reproduced and recontextualized in the novel. The research site was my writing process, and the data gathered came from the variety of ways I navigated cultural stimuli specific to writing the novel. The outcome engaged with the specific way Pasifika (and …

Effects Of Training And Self-Monitoring On Paraeducators' Use Of Behavior Specific Praise, Camille J. Lopez

All Graduate Theses and Dissertations, Fall 2023 to Present

Paraeducators support students with disabilities in special education classrooms but often receive limited training in effective behavior support strategies. This study examined whether training combined with self-monitoring increased paraeducators’ use of positive, specific praise and reduced the use of reprimands during instruction. Paraeducators were trained to use and track their own praise while working with students. Results showed increased use of positive praise and decreased reprimands following the intervention. These findings suggest that brief, low-cost training and self-monitoring can improve paraeducator instructional practices and support positive classroom environments for students with disabilities.

Assessing Young Children's Computational Thinking: Validation Of Items And Item Design Features, And Diagnostic Approaches, Chungsoo Na

All Graduate Theses and Dissertations, Fall 2023 to Present

The goals of this multiple-paper dissertation are to evaluate the psychometric evidence of the Computational and Spatial Thinking Assessment (CaST), designed and developed by the Coding in Kindergarten (CiK) research team (supported by NSF #1842116). In Chapter 2 (Paper 1), I evaluate the psychometric quality of the CaST assessment at the item level. The CaST has moderate item difficulty and high item discrimination, on average, with high reliability and no gender- or age-related item bias. In Chapter 3 (Paper 2), I identify seven item design features from the CaST assessment and examine their impact on item difficulty. All item design …

A Mixed-Methods Investigation Of Physician Compassion In Consultations For Chronic Primary Pain, Sarah Daehler

All Graduate Theses and Dissertations, Fall 2023 to Present

Chronic primary pain refers to physical pain that has no apparent organic cause, cannot be explained by another condition, and has associated psychological distress or functional impairment. Chronic primary pain is common and can significantly interfere with functioning, including occupational or social functioning. Research has shown that physicians struggle to treat this population, with many physicians reporting feeling unequipped and many patients feeling that their physicians are unhelpful and dismissive. Compassion may play a key role in improving these difficult interactions. The present study analyzed a sample of 99 participants with chronic pain and 100 healthy controls to learn more …

Effects Of Subsurface-Drip-Irrigation On Alfalfa Evapotranspiration In The Intermountain West, Namuna Dhakal

All Graduate Theses and Dissertations, Fall 2023 to Present

Alfalfa is one of Utah’s most important crops, but it is also the largest agricultural consumer of water. Because the state faces frequent droughts and growing pressure on limited water supplies, farmers and water managers are increasingly interested in irrigation systems that could reduce water use. Subsurface drip irrigation (SDI), which delivers water directly to plant roots through buried drip lines, has shown promising results in other regions, where it often reduces water consumption and increases yield. However, little research has evaluated SDI under Utah’s unique climate, soils, and high-elevation valleys.

This study compared an SDI system with a traditional …

Evaluating The Feasibility, Acceptability, And Preliminary Efficacy Of An Online Acceptance And Commitment Therapy Program To Improve Dietary Quality In Highly Stressed Adults, Francesca M. Knudsen

All Graduate Theses and Dissertations, Fall 2023 to Present

Stress can negatively affect both mental and physical health, which can increase the risk for chronic illness. When people feel stressed, they may also find it harder to make healthy food choices, which can further impact their health. Despite this, there are limited treatments designed to help people improve their dietary quality while managing stress. Acceptance and commitment therapy (ACT) is an evidence-based psychological approach that helps people respond more effectively to difficult thoughts and emotions while behaving in ways that are aligned with their personal values. This study tested whether a brief, online ACT-based program, combined with coaching phone …

Investigating Utah's Watershed Restoration Initiative: A Qualitative Case Study Of A State-Managed Collaborative Platform, Casey Trout

All Graduate Theses and Dissertations, Fall 2023 to Present

Collaboration is necessary to address complex, cross-jurisdictional natural resource problems. To better understand the benefits and drawbacks of innovative collaborative structures, this research examined the Utah Watershed Restoration Initiative (WRI). WRI is a state-managed program in Utah that implements cross-boundary habitat restoration projects. Local, state, and federal government agencies as well as non-profit organizations convene on five regional teams to design and evaluate projects. Project partners are engaged at a local level while most program administration occurs at the state level. A case study of WRI was conducted, making use of interviews with 33 participants, document review, and field observations. …

Two Applications Of Lifting-Line Theory For The Design Of Efficient Aircraft, Amanda K. Olsen

All Graduate Theses and Dissertations, Fall 2023 to Present

Numerical lifting-line is a tool that can be used to evaluate the forces and moments of an aircraft wing. This method has limitations but it is beneficial in obtaining a large set of results with relatively little computational power. This research seeks to analyze two different flight scenarios through the use of two numerical lifting-line tools developed at the Utah State University AeroLab. The first scenario involves an aircraft in ground effect flight. When an aircraft flies close to the ground, a phenomenon called ground effect occurs where the lift is increased and the induced drag is decreased. Therefore, flying …

Characterizing Metabolic Flux Of Plant Secondary Metabolites From Diverse Animal-Source Foods To Humans, Muhammad Ahsin

All Graduate Theses and Dissertations, Fall 2023 to Present

There is a popular saying: “You are what you eat.” But does this also mean, “You are what your food eats”? This dissertation explores that question by examining how farming practices shape the nutritional quality of meat—and what, if anything, those differences mean for the people who consume it. While modern livestock production and nutrition research often emphasize protein and fat, this work tests the idea that animals function as biological mediators, linking soil and plant conditions to human diets through the chemical composition of meat and milk. To evaluate this hypothesis, we tracked health-relevant plant compounds— phytonutrients—across the soil–plant–animal–human …