Digital Commons Network^™

Hybrid Rib And Air Core Arrow Waveguides Fabricated In A Thin Membrane Covered Trench, Seth Brent Walker

Theses and Dissertations

The focus of this work is the development of hollow core Anti-Resonant Reflecting Optical Waveguides (ARROWs) fabricated in a membrane covered trench. This technique is a new approach at building more efficient hollow core waveguides for integration into various platforms that involve liquid or gases. These structures are built on silicon wafers using standard microfabrication techniques, including plasma etching to form trenches. Four waveguide designs are demonstrated, which have different numbers of thin film reflecting layers. Research and manufacturing were conducted in BYU's Integrated Microelectronic Laboratory (IML). A brief history of past work at BYU on hollow core ARROW devices …

Theory And Tools: The Future Of Technology-Based Learning (Script), Andrew S. Gibbons Iii

Faculty Publications

We are entering a narrow passage that will see great instability in learning technology, instruction, and distance education. My purpose is to talk about two changes that I believe will redirect the entire future of technology-based education.

Theory And Tools: The Future Of Technology-Based Learning (Slides), Andrew S. Gibbons Iii

Faculty Publications

We are entering a narrow passage that will see great instability in learning technology, instruction, and distance education. My purpose is to talk about two changes that I believe will redirect the entire future of technology-based education.

College Students' Perceptions And Opinions Of Their Physical Activity Instructor Being Caring In Class, David C. Barney, Kamora Shelton, Katelyn Rogers, Teresa Leavitt Dr.

Faculty Publications

College can be a very impressionable time for a student, both positively and negatively. One way the college experience can be positive is the interactions the student has with their professors/instructors (hereafter the term instructor will be used). One behavior the instructors can exhibit including in physical activity (PA) classes is being caring or showing caring behaviors toward students. The purpose of this study was to investigate college students’ perceptions of the impact of PA instructor caring behaviors toward the student. For this study 69 college students (45 males and 24 females) were surveyed with one open-ended survey question. It …

Classifying Forecasts, Michael S. Drake, James R. Moon Jr., James D. Warren

Faculty Publications

We employ a novel machine learning technique to classify analysts’ forecast revisions into five types based on how the revision weighs publicly available signals. We label these forecast types as quant, sundry, contrarian, herder, and independent forecasts. Our tests reveal that a greater diversity of forecast types within the consensus is associated with increased consensus dispersion and improved consensus accuracy. Additionally, consensus diversity is associated with an improved information environment for firms, as reflected in reduced earnings announcement information asymmetry and volatility, higher earnings response coefficients, and faster price formation. Our study sheds light on how analysts revise their forecasts …

The Olmsted Fault, Southernmost Illinois: A Key To Understanding Seismic Hazard In The Northern New Madrid Seismic Zone, Christopher E. Bexfield

Theses and Dissertations

The northernmost extent of the New Madrid seismic zone in the central USA has been investigated using an integrated approach involving both compressional-wave (P) and horizontally polarized-wave (SH) seismic reflection and regional and dedicated borehole geophysical information in order to assess seismic hazard and risk. Our study area, centered around southernmost Illinois and western Kentucky, USA, represents an area of concentrated facilities (e.g., lock and dam sites and chemical plants on the Ohio River near its confluence with the Mississippi River) as well as an area of high potential soil amplification due to earthquake shaking. Integrated high-resolution seismic reflection profiles …

Consumerism & Sustainability, Karen Strange

Instructional Psychology and Technology Graduate Student Projects

The purpose of my project was two-fold. Firstly, it aimed to create a supplemental course on Consumerism and Sustainability to accompany existing textbook readings in a BYU course on textiles. Secondly, the project sought to convert an activity from the chapter with passive learner-content interaction with the video lectures and chapter readings into one that had interactive learner-content interaction. This project was created for the instructor/students in the Textile Course 382 in FACS Education Department at BYU. By updating the course content, students would have an opportunity to interact with the content as well as with other students in a …

Psychological Safety Of Pre-Licensure Nursing Students: A Longitudinal, Qualitative Study, Laura Butler

Student Works

Background: Previous studies have explored the concept of psychological safety among pre-licensure nursing students; however, the literature is notably sparse on personal descriptions of pre-licensure nursing students’ experiences of psychological safety in clinical settings. Individual descriptions of psychological safety will provide added insight and understanding about the elements that shape psychological safety in pre-licensure nursing students.

Objectives: This research aimed to longitudinally explore pre-licensure nursing students' experiences of psychological safety during clinical rotations and how their experiences of psychological safety change over time.

Methods: This study used a longitudinal, qualitative, descriptive approach. Participants were recruited from a …

Geraldo The Fearless: The Unsung Hero Of Portugal, Jacob Badal

The Thetean: A Student Journal for Scholarly Historical Writing

It is well known that Western Europe has enjoyed a longstanding fascination among scholars and students. So much so that calls to move beyond the region towards a global focus in academia are increasing daily. Yet, much of Western Europe's history beyond England, France, and Germany remains unexplored. Spain, as of late, has enjoyed a resurgence of interest, but Portugal has largely been ignored. Indeed, many do not even consider the two Iberian nations and their entangled histories with Islam and North Africa as part of Europe proper, despite the many advancements contributed by both nations to science, cartography, navigation, …

Binding Interdependence: The Necessity Of Marriage In The Stonor Letters, Sarah Emmett

The Thetean: A Student Journal for Scholarly Historical Writing

Upon her Mattiage to William Stonor in 1475, Elizabeth Stonor, nee Croke, was no wedding amateur. Twice before, she had stood on the steps of the church, as was the custom, and promised to share her wealth and her body with her husband. Twice before, her husband had promised to provide for her and leave her a dower portion upon his death. Both grooms had offered Elizabeth gold and silver coins and a ring to seal their union, and both times, Elizabeth and her husband had prostrated themselves before the altar of the church and heard mass among their family, …

Rivalries At Red Cliff: Recasting Historical Figures In Modern Chinese Film And Television, Jackson Keys

The Thetean: A Student Journal for Scholarly Historical Writing

When accomplished strategist Zhuge Liang visits the funeral of his bitter rival Zhou Yu, he does something no one expects. Mose of the attendees are loyal to Sun Quan , Zhou Yu's lord who controls China's southernmost provinces, and are well aware of the incense power struggle chat ensued between Zhou Yu and Zhuge Liang as che two cooperated in repelling Cao Cao's advances at Red Cliff. Zou Yu attempted multiple times before and after the battle to have Zhuge Liang killed, and each time Liu Bei's brilliant strategist was one step ahead of him. Zhou Yu's deathbed message, penned …

An Investigation Of The Interactions Of Gradient Coherence And Network Pruning In Neural Networks, Zachary Yauney

Theses and Dissertations

We investigate the coherent gradient hypothesis and show that the coherence measurements are different on real and random data regardless of the network's initialization. We introduce "diffs," an attempt at an element-wise approximation at coherence, and investigate their properties. We study how coherence is affected by increasing the width of simple fully-connected networks. We then prune those fully-connected networks and find that sparse networks outperform dense networks with the same number of nonzero parameters. In addition, we show that it is possible to increase the performance of a sparse network by scaling the size of the dense parent network it …

Just “Getting By” – Understanding Resource Deficits And Barriers To Medical Interpretation From The Perspectives Of Spanish-Speaking Patients And Emergency Department Nurses, Magdalena Scribner Briggs

Undergraduate Honors Theses

Introduction: Professional medical interpretation has been found to improve communication quality and health outcomes for patients with LEP. There are over 16 million LEP Spanish-speakers in the United States, yet the literature indicates that professional interpretation is lacking and underutilized in many clinical settings. Study Aims: Based on gaps in the literature pertaining to the perspectives of nurses and the cultural factors that influence patient experience, this study aims to qualitatively analyze the matter from the perspectives of both nurses and Spanish-speaking patients. The purpose of this study is to identify barriers to the utilization of professional interpreters, especially by …

Developing Adult English Language Learners' Fluency And Pronunciation Skills Through Readers Theater, Francisca Constanza Jara Scholz

Theses and Dissertations

This thesis explores the impact of Readers Theater (RT) on the fluency and pronunciation skills of adult English language learners (ELLs) at an intermediate proficiency level. Readers Theater, a technique gaining attention in oral language skills development, involves transforming stories into scripts and performing them orally in a dramatic way. While there is limited empirical research on the extended use of this technique, this study employs a quasiexperimental design with control and treatment groups to evaluate its effectiveness based on temporal fluency measures and level achievement tests. Research has identified three particular temporal fluency measures that correlate with second language …

Contradictions Among The People: Mao Zedong And The Aims Of The Hundred Flowers Policy, Cameron C. Nielsen

The Thetean: A Student Journal for Scholarly Historical Writing

As the year 1956 dawned, the People's Republic of China (PRC) was at a crossroads. After a mere six years in power, the Chinese Communist Party (CCP) had successfully consolidated its control of mainland China, stabilized and reformed the economy, won the hearts of the peasants through land redistribution, fought the United States to a standstill in Korea, and silenced dissent through re-education campaigns. However, questions began to arise over where to go from there. To the surprise of many, at this moment of the Party's uncertainty, Mao Zedong began to push for greater openness to critical voices. Known as …

Reed Smoot And The League Of Nations: Duty To Church And Party, Brandon Hellewell

The Thetean: A Student Journal for Scholarly Historical Writing

Senator Reed Smoot (R-UT) lived his life with two great devotions, the Republican Party and The Church of Jesus Christ of Latter-day Saints. In 1919, he held high positions in both. At that time, and in his seventeenth year as a senator, Smoot served as a member of the Senate Finance Committee. He also served as an Apostle of the LDS Church. These two parts of Smoot's life created tensions at several junctures, including 1919 when the Republican Party and LDS Church took opposing sides in the battle over United States membership in the League of Nations. The Church supported …

Sleep It Off? Exploring Sleep Duration And Bedtime Regularity As Potential Protective Moderators Of Early Adversity's Impact On Mental Health In Infancy, Childhood, And Adolescence, Sarah Lindsey Hipwell Kamhout

Theses and Dissertations

Introduction: Adverse Childhood Experiences (ACEs) are known to increase risk of mental health challenges throughout development, and sleep is known to decrease risk of mental health challenges. These have not been studied in tandem in younger cohorts. We investigated whether interactions between sleep duration and sleep regularity would moderate the impact of ACE exposure on risk for the development of mental health disorders. Methods: We conducted secondary cross-sectional analyses on the 2020-2021 waves of the National Survey of Children's Health (NSCH) (n = 92,669). We used logistic and ordinal regression to replicate known main effects of ACEs (total, household, community, …

Perceptions Of Tesol Instruction From Varying Feedback Sources, Kylie J. Woffinden

Theses and Dissertations

Many studies in the field of preservice TESOL teacher education focus on expert teacher feedback to preservice teachers but neglect to address other sources of classroom feedback. This study explored how alternate sources of classroom feedback, including peer teachers and students, compare to expert feedback. A total of thirty participants from three different participant groups were featured. The three participant groups were composed of students studying at an intensive English lab school, preservice teachers who worked at the lab school, and the mentors and university instructors that guided those preservice teachers. Data collection took place through feedback sessions, during which …

Lessening Lacunas: A Genetic Critique And Literary Analysis Of Female Indigenous Characters In Maria Firmina Dos Reis's Gupeva, Xana Furtado

Theses and Dissertations

One year after publishing Úrsula (1860), Maria Firmina dos Reis (Brazil’s first female novelist) published Gupeva, a novella that acts as a continuation of José de Santa Rita Durão’s Caramurú: Poema épico do descubrimento da Bahia (1781). Gupeva depicts the ultimately tragic love between Épica, an indigenous woman, and Gastão, a French sailor. The novella was published twice more during Reis’s lifetime—once in 1863, with minimal orthographic changes, and again in 1865, this time with quite drastic modifications. The editors of Echo da Juventude, where the 1865 version was published, acknowledged these changes by asking readers to be "indulgentes para …

College Students' Perceptions Toward Native And Non-Native Chinese And Spanish Instructors, Xiaoce Ye

Theses and Dissertations

Since the recognition of the distinction between native and non-native language teachers in English Language Teaching (ELT), research has focused on understanding the strengths and weaknesses of both types of instructors. However, limited attention has been given to students' perceptions of native teachers (NSTs) and non-native foreign language teachers (NNSTs) beyond English instruction. This thesis delves into college students' perceptions of native and non-native Chinese and Spanish language instructors in language education, extending beyond the native/non-native English teacher debate. Drawing from existing literature on language teaching, this study contextualizes preferences and biases to provide an understanding of student perceptions. Employing …

Visualizing Intergenerational Kinship: Humor, Grief, And Youth-Led Resurgence In Reservation Dogs, Emily Catherine Huillet

Theses and Dissertations

Audiences have been drawn to Reservation Dogs (2021-2023) because of its life-giving humor and portrayal of contemporary Indigenous realities. Yet the series truly gains its rhetorical power as the creators pair humor with intergenerational kinship to process diverse forms of unresolved grief. In fact, through narrative, the filmmakers map out processing grief and bonding through humor as healthy components of intergenerational kinship, and they position Indigenous youth as leading that balanced approach to kinship. I refer to this artistic rhetorical mapping as visual kinship mapping and I view it as a filmic manifestation of cultural mapping processes described by Leanne …

The Advancement Of Experimental And Computation Tools For The Study Of Molten Salt Chemistry To Facilitate The Extraction Of Strategic Elements In Nuclear Applications, Michael Stoddard

Theses and Dissertations

Nuclear energy presents environmental benefits, yet the challenge of radioactive waste management persists. Advanced solutions, such as Molten Salt Reactors (MSRs), require a more profound understanding of molten salt chemistry. This research aims to develop tools, including a depletion simulator, molten salt electrochemical simulator, and a fluoride-based thermodynamic reference electrode for electrochemical purification. The computationally inexpensive depletion simulator allows for exploration into extraction and processing strategies for molten salt reactors. An illustrative case study on Mo-99 production from MSRs demonstrates the practical application of the theoretical framework, emphasizing the need for optimization in extraction effectiveness and separation difficulty. The electrochemical …

Trip - Transformer Interatomic Potential Predicts Realistic Energy Surface Using Physical Bias, Bryce Eric Hedelius

Theses and Dissertations

Accurate interatomic energies and forces enable high-quality molecular dynamics simulations, torsion scans, potential energy surface mapping, and geometry optimization. Machine learning algorithms have enabled rapid estimates of energies and forces with high accuracy. Further development of machine learning algorithms holds promise for producing general potentials that support dozens of atomic species. I present my own Transformer Interatomic Potential (TrIP): a chemically sound potential based on the SE(3)-Transformer. TrIP's species-agnostic architecture--using continuous atomic representation and homogenous graph convolutions--encourages parameter sharing between atomic species for more general representations of chemical environments, keeps a reasonable number of parameters, serves as a form of …

Development Of Deployable Arrays For Satellites Through Origami-Pattern Design, Modeling, And Optimization, Nathan Mckellar Coleman

Theses and Dissertations

This research presents methods for modeling and optimizing an origami design using compliant mechanisms, improving origami design processes, modeling and analyzing rolling behavior of compliant designs, and an antenna design for SmallSats. A framework for the optimization of the origami Flasher pattern to mitigate issues with rigid-foldability is shown, and several optimization solutions are presented to overcome these issues. An alternative design method is presented which allows designers to more accurately predict the characteristics of a design in the deployed state, and configurations are shown for an example use case. A model for rolled gossamer structures is presented which predicts …

A Corpus Study Of The Effects Of Information Packaging On The Position Of Siempre And Nunca In The Spanish Verb Phrase, Rebekah Geddes

Theses and Dissertations

In Spanish, time adverbs show variability in their position with respect to the modified verb. This thesis investigates the effect of information packaging on the position of VP time-adverbs of frequency. Data were drawn from the Davies WEB Dialects Corpus. Two high-frequency verbs (dar and decir), as well as some of their less frequent near-synonyms (expresar, declarar, mencionar vis-à-vis decir, and ofrecer, entregar, and regalar vis-à-vis dar) were examined in relation to the adverbs siempre and nunca. The data show that when VP adverbs are part of sentence focus and do not have any special emphasis, they are found in …

Student Driven Feedback: A Study In Self-Efficacy, Jennifer L. Dunn

Theses and Dissertations

In this mixed methods research study, I use student survey and interview data from English 11 students at a suburban, public high school to analyze the ways in which students' self-efficacy is impacted when a feedback intervention is introduced that creates the opportunity for students to ask questions about their writing. In this study, I found that as a result of the intervention students showed an increase in their writer-centered efficacy beliefs, reported an awareness of the control and autonomy the intervention provided, and expressed an appreciation for the ways in which teacher feedback can be useful in helping them …

Ai-Ghazali's Deliverance From Error And Mormonism, Jade Stocks

The Thetean: A Student Journal for Scholarly Historical Writing

In the Doctrine and Covenants, we are encouraged to "Seek ye out of the best books words of wisdom." While this recommendation comes from Mormon scripture, no group or individual has a monopoly on wisdom or knowledge-these "best books" clearly include works by those of other faiths. One of history's most prominent religious writers is Abu Hamid Muhammad al-Ghazali, who studied and wrote during the uoos on many topics, including the relationship between religion and the various forms of science. In his thesis Deliverance from Error, Al-Ghazali proposes that there are three levels of knowledge, each more concrete than …

Automating Verification Of Bpmn Workflow Functional Correctness Using Model Checking, Bryce Mckay Pierson

Theses and Dissertations

Many critical systems industry-wide demand fail-safe process execution. Many of these systems are beginning to use low-code or no-code (LC/NC) solutions to their problems. Mechanisms for verifying the integrity of LC/NC solutions are extremely limited in comparison to traditional code. One solution exhaustively searches the execution state space for undesirable behavior, but it requires expertise in model checking and extensive manual labor. Additionally, error output from that method is exclusively text-based and demands time and familiarity to comprehend. We introduce a tool for automating model checking of LC/NC solutions. Participation in the automation process requires very little knowledge of the …

Sagefire: An Agent-Based Model Of Heat Dynamics In Sagebrush Steppe Ecosystems During A Fire Event, Samuel Joseph Knuth

Theses and Dissertations

Context: The Great Basin in the western US features arid to semi-arid climates and sagebrush steppe ecosystems. Increased fire frequency can negatively impact these ecosystems by promoting invasive species. Agent-based modeling is a valuable tool to study fire dynamics in sagebrush steppe ecosystems, offering insights in management strategies and ecosystem resilience. Objectives: We developed SageFire, an agent-based model, to simulate heat dynamics influenced by shrub cover during fires in the Great Basin. Our objectives were to accurately classify ground cover types, incorporate classified imagery into a simulation model, and accurately visualize fire intensity based on the spatial arrangement of the …

Head Tail Open: Open Tailed Classification Of Imbalanced Document Data, Chetan Joshi

Theses and Dissertations

Deep learning models for scanned document image classification and form understand- ing have made significant progress in the last few years. High accuracy can be achieved by a model with the help of copious amounts of labelled training data for closed-world classification. However, very little work has been done in the domain of fine-grained and head-tailed(class imbalance with some classes having high numbers of data points and some having a low number of data points) open-world classification for documents. Our proposed method achieves a better classification results than the baseline of the head-tail-novel/open dataset. Our techniques include separating the head-tail …