Digital Commons Network^™

Teaching Contextually Appropriate Play Commenting Without The Use Of Visual Cues, Beverly Nichols

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Deficits in communication and play can affect the quality of life of autistic children and individuals, which is why it is important that we help them acquire these skills as early as possible. Applied behavior analysis (ABA) and script training and fading procedures are evidence-based practices that can successfully teach communication during play. However, script fading can be difficult, and scripts may not be able to be completely faded out of the environment. The findings from a recent study suggested that specific phrases can become associated with small pictures rather than written scripts Perhaps, these specific phrases can be tied …

Stressor: An R Package For Benchmarking Machine Learning Models, Samuel A. Haycock

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Many discipline specific researchers need a way to quickly compare the accuracy of their predictive models to other alternatives. However, many of these researchers are not experienced with multiple programming languages. Python has recently been the leader in machine learning functionality, which includes the PyCaret library that allows users to develop high-performing machine learning models with only a few lines of code. The goal of the stressor package is to help users of the R programming language access the advantages of PyCaret without having to learn Python. This allows the user to leverage R’s powerful data analysis workflows, while simultaneously …

Making Space For Student Agency: A Multilayered Exploration Of Agency And Writing In A First‐Grade Classroom, Kara Decoursey

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Early literacy learning is crucial for later success in reading and writing. We have a limited understanding of generative writing (i.e., expressing ideas in writing) in first grade and further research is warranted. The socially situated nature of writing justifies a study of student agency during writing.

In this study, data were collected before, during, and after 10 writing sessions in a first-grade classroom. Students took a pre- and post-survey that revealed their self-perceptions of their agency and confidence as literacy learners. The participating teacher was interviewed three times and the teacher’s talk was recorded during all 45- to 60- …

The Time-Dependent Ionospheric Model Using A Tec-Driven Servo: An Investigation Of The Capabilities And Limitations, Jenny Rebecca Whiteley

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The ionosphere is a region of the atmosphere with a high density of electrons. These electrons affect the behavior of any electromagnetic wave that passes through the ionosphere. Communication and geolocation systems, such as traditional radio and Global Positioning Systems, depend on emitted electromagnetic signals being picked up by a receiver. The presence of the ionosphere affects the behavior of the signal and the quality of the service. Hence, the interactions between electromagnetic waves and the ionosphere provide a major motivation to understand, research, and successfully model and predict the ionosphere and its physical phenomena. This study focused on determining …

Consumption Of A Western Diet Enhanced Colitis-Associated Colorectal Cancer And Dysbiosis Of The Fecal Microbiome In Mice Notwithstanding Dietary Intervention Or Fecal Microbiome Transfer, Daphne Michelle Rodriguez Jimenez

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

In a rodent model of inflammation-associated colorectal cancer, consumption of a Western-style diet increases gut inflammation and enhances risk of developing colon tumors. The goal of this dissertation was to understand the contribution of bacteria within the large intestine on colon inflammation and colon tumorigenesis. Two pre-clinical animal studies were performed using two different intervention strategies to shift the microbiome, and potentially gut inflammation and tumor development: 1) an experiment using dietary supplementation with black raspberries, a functional food enriched in bioactive anthocyanins with purported antiinflammatory activity, and 2) an experiment using fecal microbiota transfer from mice fed a healthy …

Opening The Black Box: Soil Microbial Communities In Field-Based Plant-Soil Feedback Experiments, Julia Kate Aaronson

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Plant-soil feedback is a process through which plants modify the properties of their associated soils, affecting their growth. PSF can play a key role in regulating plant growth and communities including altering plant invasion, rarity, and abundance. However, our understanding of the soil organisms that drive these plant growth responses is limited. Most studies treat soils as a ‘black box’ and do little to reveal which specific microbes or microbial communities may be responsible. This chapter examines two recent large PSF field experiments conducted in Minnesota, USA, and Jena, Germany. These experiments revealed that plants altered their soils, changing subsequent …

Using Head Start Children's Language Development To Predict Social Information Processing Ability, Kendra Newman

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

As young children grow and develop, gaining social skills and different language abilities is extremely important. As children develop, they also acquire the ability to process social information, which then helps them respond in various social situations. Children should eventually be able to respond to social situations in socially acceptable ways, instead of answering in aggressive or passive ways. This study examined the relations between children’s language development, and social information processing ability. This study included 51 children, from 19 Head Start classrooms. Results showed that at the beginning of the Head Start year children with more language, responded in …

Executive Functioning In Children With Autism And Co-Occurring Neurodevelopmental Disorders: A Systematic Review And Quantitative Analysis, Kandice Benallie

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Children with autism and other NDDs experience some level of executive dysfunction including challenges with problem-solving, judgement, working memory, and flexibility. Considering autism and other NDDs including ADHD and ID have overlapping symptoms, it can be difficult to differentially diagnose the disorders. This dissertation sought to explore how co-occurring ADHD and ID impact the EF of autistic children. The first study systematically reviewed the current research examining EF of autistic children with co-occurring ADHD and ID. Findings suggest that co-occurring ADHD and ID result in increased executive dysfunction as compared to children with autism only. The systematic review also revealed …

The Mental Health Correlates Of Microaggressions Towards Transgender And Gender Diverse People Of Color: Moderating Effects Of Identity Affirmation And Lgbtq+ Community Connectedness, Kevin Chi

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

LGBTQ+ (lesbian, gay, bisexual, transgender, queer, or other meaningful self-labeled sexual and gender identities) individuals experience daily stressors (e.g., discrimination, violence, hypervigilance, negative expectations) that contribute to poorer mental health outcomes (e.g., depression, anxiety, posttraumatic symptoms, substance). For LGBTQ+ people of color (POC), identifying with multiple intersecting marginalized identities creates unique experiences of inequality that expose them to additional stressors, contributing to poorer mental health outcomes. Perceiving microaggressions, daily brief, everyday assaults on marginalized individuals, about one’s identity has been found to have negative mental health effects. TGD (transgender and gender diverse) POC face exposure to multiple types of microaggressions …

Patient-Therapist Congruence On Aspects Of The Therapeutic Alliance In Psychotherapy For Medically Unexplained Symptoms, Sarah Daehler

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Medically unexplained symptoms (MUS) are physical symptoms that cannot be explained or are not sufficiently explained by medical examination. These symptoms most typically present as pain or other discomfort, and are associated with significant psychological distress, healthcare utilization, and disability. Both psychologists and medical professionals have struggled to treat this population, and MUS patients have noted their dissatisfaction with the care they receive. The present study analyzed a sample of 174 patient-therapist dyads to explore the role of congruence, or agreement, on aspects of the therapeutic alliance in therapy for MUS as congruence research has not yet been conducted in …

Connectedness And Wellbeing: Investigating Community And Nature-Based Connection In The Context Of Utah's Rapid Growth, Sarah E. Wilson

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Research suggests that feeling connected to the natural world and feeling socially connected to your community positively influence wellbeing. However, significant demographic shifts within communities may reduce the amount of social and nature-based connectedness enjoyed by residents. As one of the fastest growing states, data from within Utah likely provides important insights related to how population growth impacts connectedness and wellbeing. Considering this, the present research investigated the relationships between personal wellbeing, community connection, and connection with nature in the context of Utah's rapid population growth by utilizing quantitative survey data from the Utah Wellbeing Project and demographic information from …

Fremont Legacy In Capitol Reef And The Waterpocket Fold: A Radiocarbon Analysis Of The Pectol Collection Coiled Basketry Using Bayesian Modeling, Chelsea Cheney

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Perishable artifacts provide ample opportunity to better understand past human lives. Artifacts constructed from shorter-lived plant materials can make a significant contribution to archaeological research through radiocarbon dating. Analyzing and radiocarbon dating the basketry construction types from the Pectol Collection aids in the development of a more precise prehistoric timeline for the Capitol Reef and Waterpocket Fold (CRWF) area of southeastern Utah. Basketry technology construction is treated as a signal for growing Fremont occupancy throughout the Colorado Plateau and eastern Great Basin, and can the provide prior information used to better organize Bayesianbased age models. From AD 750–1050, a narrow …

Mission Planning Techniques For Cooperative Leo Spacecraft Constellations, Skylar A. Cox

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

This research develops a mission planning approach that allows different systems to cooperate in accomplishing a single mission goal. Using the techniques described allows satellites to cooperate in efficiently maneuvering, or collecting images of Earth and transmitting the collected data to users on the ground. The individual resources onboard each satellite, like fuel, memory capacity and pointing agility, are used in a manner that ensures the goals and objectives of the mission are realized in a feasible way. A mission plan can be generated for each satellite within the cooperating group that collectively optimize the mission objectives from a global …

The Impact Of Formative Assessment Cycles On Students' Attitudes And Achievement In A Large-Enrollment Undergraduate Introductory Statistics Course, Kimberleigh Felix Hadfield

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

This study aimed to investigate the impact of student attitudes toward statistics and student achievement after engaging in large-enrollment introductory statistics course curriculum using continuous formative assessments with feedback and reassessment opportunities. This framework, called Formative Assessment Cycles (FACs) was implanted, providing students formative assessments both in and out of the classroom, with feedback and reassessment. A quasi-experimental, quantitative research design allowed for the investigation of course achievement from pre-FACs to FACs semesters using regression discontinuity methodology. Changes in attitudes from pre- to post-survey in semesters using a curriculum with FACs were analyzed by multilevel regression techniques. Course achievement improved …

Development Of The Digital Signal Processing For The Space Weather Probes Version 2 Sensor Using The Matlab/Simulink Environment, Benjamin J. Lewis

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Space Weather Probes (SWP) is an instrument that provides measurements of the plasma environment of the ionosphere. SWP was flown on the Scintillation Prediction Observation Task (SPORT) mission, a joint mission between the United States of America and Brazil. This thesis will develop the digital signal processing (DSP) hardware design for the Space Weather Probes version 2 (SWP2). The data from these instruments will be used to determine the density and temperature of the local plasma, as well as the electric field in the local plasma. This thesis presents the design and testing of the DSP designs for all of …

Physics-Guided Deep Learning For Solar Wind Modeling At L1 Point, Robert M. Johnson

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Neural networks are adept at finding patterns that are too long and too small for humans to find in data. Usually, this power is used to generate predictions with greater accuracy than most alternative models. However, we can also use this power to understand more about the data we train these networks on. We do this by changing the data that the networks train on and the data they are tested on. This allows us to both control the maximum length of a pattern and to compare data between different groups, in our case, different solar cycles. This thesis is …

Precipitation And Soil Properties Determine Long-Term Consequences Of Disturbance And Invasion In Drylands, Tyson Terry

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Disturbance and invasive species have dramatic effects on desert plant communities, often resulting in degradation or shifts to alternative plant communities. Climate and soil properties determine water availability to plants, and have been thought to drive patterns of recovery following disturbance and potential for invasion.

In chapter II we used a combination of natural gas pipelines and satellite imagery to understand how recovery from a uniform disturbance differs across precipitation and soil gradients. We used a recovery ratio (disturbed/undisturbed) of pipeline pixels and their undisturbed nearest neighbor pixel to quantify recovery in a comparable way across precipitation gradients. We found …

Gesture And Language In Children Enrolled In Early Intervention, Makenzy S. Turner

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Language development in preschool-age children is important, as children with early language delays are at risk for difficulties in other areas such as literacy skills, behavioral skills, and social/emotional skills. Gesture has been found to be linked to language skills in young children. This study examined gesture use and language development in a group of young children receiving early intervention services.

This study found that children with language delays at 24 months used fewer gestures during play. Additionally, gesture use was positively associated with other factors that may influence language, such as parent responsiveness and household income. Furthermore, 24-month child …

A Cohesive Simulation And Testing Platform For Civil Autonomous Aerial Sensing And Operations, Stockton G. Slack

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Drones (also known as sUAS or small Uncrewed Aerial Systems) are often flown with cameras to take images of an area of land. These images can then be used to create a map by stitching these images together. This map can then be analyzed using scientific principles to learn things about the land and make decisions or take action based on the information.

The scientific application of drones is very advantageous, but flying a drone is inherently dangerous, impacting the safety of the airspace (particularly in the event of a crash), and drones are more dangerous the bigger they are. …

Public Perceptions And Attitudes Toward Domestic Climate Migrants And Migration In The U.S., Brittany Shae Harris

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Increasing frequency and intensity of extreme weather events due to global climate change have an important effect on human migration and relocation. Short-term extreme weather events like floods and wildfires are likely to continue to displace people. Long-term environmental changes like droughts and increasing temperatures may also contribute to increased human migration. This research aimed to better understand how people in the U.S. perceive domestic climate migrants, and what drives these perceptions. First, I investigated the relationship between public climate change risk perceptions and attitudes and perceptions about domestic climate migrants and migration. I found that people tend to rely …

The Influence Of Secondary Principals' Perceived Trust Of Assistant Principals And Central Office Supervisors On Principal Self-Efficacy For Instructional Leadership, Cody J. Reutzel

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Although self-efficacy has been studied widely in education, variables associated with the self-efficacy of principals have received relatively limited attention. The current study investigated the relationship between secondary principals’ perceptions of trust in their assistant principal and central office supervisor and their own self-efficacy for instructional leadership. Surveys were collected from 80 secondary principals. Open-ended questions were utilized to gain greater understanding of the behaviors contributing to principals’ perceptions of trust and feelings of self-efficacy. Data were analyzed using correlation and multiple regression. Quantitative results revealed that no statistically significant relationship is present between trust perceptions in the relationships investigated …

Diversity In Tech: Analyzing The Mismatch Between Corporate Framing And Impact, Rana Abulbasal

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

This doctoral dissertation investigates the discrepancy between tech companies' substantial investments in diversity programs and the persistently low representation of Black, Indigenous, and people of color (BIPOC) employees. Despite extensive efforts, discrimination and harassment against women and people of color persist in the industry. The study employs a critical interdisciplinary approach, comprising sociological perspectives on diversity management and two empirical studies. The first scrutinizes tech companies' framing strategies of diversity initiatives on their websites, while the second explores the impact of Diversity, Equity, and Inclusion (DEI) policies on women of color in the industry. By identifying shortcomings and proposing recommendations, …

Co-Creating Culturally Inclusive Climate Change Programming: A Qualitative Study With Indigenous Populations In Southeast Utah, Bayli R. Hanson

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

This study explores the impact of climate change on underrepresented communities, particularly Indigenous populations in the Colorado Plateau region, and the negative effects on their cultural identities and traditional practices. Despite their knowledge and connection to the land, Indigenous communities are experiencing climate change at a more extreme rate due to their geographical location and the lasting impacts of settler colonialism. The study aims to better understand Indigenous perspectives of climate change, co-create a climate change curriculum with Indigenous populations in southeastern Utah, and apply it to an Indigenous-centric field experience. By incorporating traditional ecological knowledge and Western science practices, …

Volatile Cycling And Metasomatism In Flat-Slab Subduction Zones Of The Central Andes, Coleman Hiett

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Flat-slab subduction, where an oceanic plate subducts horizontally below a continental margin for hundreds of kilometers, is an enigmatic but prevalent tectonic configuration in which chemical cycling and alteration of the continental plate is poorly constrained. Geochemical investigations in regions of modern and ancient flat-slab subduction in the Central Andes afford an opportunity to study this process. Certain elements naturally occur with varying number of neutrons in their nuclei (isotopes), and measurements of isotope ratios within geologic materials inform on chemical sources and geologic processes. This research leverages stable isotope analyses and other geochemical tools to investigate volatiles and other …

“Whan The Turuf Is Thy Tour”: Analyzing Gender Codes Of Burial Monuments In Late Medieval And Early Modern England, Shelbie Durrant

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The cultural pressures of gender conformity and "norms" have lasted as long as the social constructs of gender themselves. Gender is present and can be analyzed in symbols within material culture such as the Russell family funerary monuments located in their private chapel in Chenies, London. Gender, although not always transparently at the front of consciousness, was interacted with, performed, and memorialized in life and death, especially for families that were high status. The presence of gender in these funerary monuments illuminates how expected conformity of gender norms were in this time — so present that they were literally set …

Centering Indigenous Knowledge: Reimagining Research Methods, Pedagogies, And Sustainability With Niitsitapi Awaaáhsskataiksi (Blackfoot Elders), Sandra Bartlett Atwood

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

My research sought to better engage with Indigenous ways of knowing and being (IWKB). Specifically, I collaborated with Blackfoot Elders (and Hawaiian Kupuna) to better understand 1) their perspectives towards land, 2) what factors instigate and perpetuate these perspectives, 3) how these perspectives play out in terms of identity; well being; daily life; education; environmental concern, behavior, and stewardship, and 4) ways that these perspectives towards land can inform and transform Western perspectives on land and perhaps lead to better and more equitable social-ecological outcomes. I approached this from three angles. First, I described a method for braiding Indigenous and …

App-Based Academic Interventions For Children With Autism, Cassity R. Haverkamp

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Technology, such as tablet/phone apps, robots, video games, and virtual reality, can be used to teach skills to autistic children. Research on technology supports for autistic youth often focus on social skills, a main part of an autism diagnosis. However, autistic children may also have academic challenges, and fewer studies have looked at how technology can teach academic skills to children with autism. We created three studies to look at how academic apps may benefit autistic children. In the first study, we reviewed studies that looked at how academic apps can increase the academic skills of children with autism. We …

A Case For Educational Communication On Sustainable Stormwater Management Sites Using Interpretive Methods: Applications For Utah State University, Lilian Taft

All Graduate Plan B and other Reports, Spring 1920 to Spring 2023

Humans are increasingly urbanizing landscapes, lowering the land’s ability to infiltrate stormwater, increasing surface water runoff. This, combined with decreasing water availability in the Intermountain West, produces the issue of sustainable stormwater management. Professionals are moving toward green stormwater infrastructure (GSI), but public is often not aware of stormwater’s impacts on natural environments or what the purpose of GSI is. Stormwater management design techniques are evolving to use visible, sustainable methods celebrating stormwater, rather than treating the valuable resource as a disposable nuisance, channeling it underground and out of sight. Artful Rainwater Design (ARD), a technique coined by Stuart Echols …

Utahns Are Becoming More Likely To Say Human-Caused Climate Change Is Happening, Jessica D. Ulrich-Schad, Jennifer E. Givens, Peter D. Howe, Cole Lancaster

Utah People and Environment Poll (UPEP)

Scientists who study the earth’s climate overwhelmingly agree that human activities are causing rapid change¹ . Most Americans also agree that global warming is happening (74%) and caused by humans (61%)² . However, the same research finds that about one in eight (12%) of Americans do not think global warming is happening. This indicates that despite scientific consensus, some Americans remain skeptical about whether climate change is real and if humans are the cause.

Precise Determination Of Charge Distributions In Electron Irradiated Polymers Via Pulsed Electroacoustic Measurements With Applications To Spacecraft Charging, Zachary Gibson

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Understanding how charge builds up and moves around in materials that are highly insulating, such as dielectrics, is important for many applications from power transmission to spacecraft charging. The leading cause of issues in spacecraft due to interactions with the space environment is spacecraft charging. That is, the accumulation of charge on insulating materials leads to arcing and sparking aboard the spacecraft. The most critical charging occurs due to electrons in a particular energy range of 10-50 keV. Electrons with these energies can travel 1’s to 10’s of microns into relevant materials. To measure where the charge is embedded and …