Digital Commons Network^™

User Guide For Urban Canopy Modeling In Wrf. Version 1.0, Corey L. Smithson, Natalie J. White, Hans R. Klomp, Eric C. Monson, Bradley R. Adams

Faculty Publications

Researchers at Brigham Young University (BYU) have developed this guide for running a WRF simulation using a single layer urban canopy model (UCM). This was developed specifically for the Greater Salt Lake Area but is adaptable to other urban areas. This guide includes information on running WRF simulations to study theoretical urban growth scenarios.

Vortex Particle Method For Electric Ducted Fan In Non-Axisymmetric Flow, Eduardo Alvarez, Cibin Joseph, Andrew Ning

Faculty Publications

The vortex particle method has been reformulated in recent work as a large eddy simulation (LES) in a scheme that is both meshless and numerically stable, solving long-standing issues of numerical stability. In this study, we build upon this meshless LES scheme to create a simulation framework for electric ducted fans. This poses the challenge of introducing solid boundaries in the vorticity form of the Navier-Stokes equations without a mesh. Rotor blades are introduced in our computational domain through an actuator line model (ALM) following well-established practices for LES. A novel, vorticity-based, actuator surface model (ASM) is developed for the …

“And God Blessed The Seventh Day And Sanctified It”: The Sabbath At Creation, Dedications, And Christ’S Theophany In 3 Nephi, Dan L. Belnap

Faculty Publications

The Creation narrative, found in various places within the canon of scripture of The Church of Jesus Christ of Latter-day Saints, describes the institution of two different types of time. The first type of time is established in the “fourth day” with the placement of the astronomical bodies, which act as markers “for signs, and for seasons, and for days, and for years”—that is, common time (Genesis 1:14; Moses 2:14). The second type of time is established in the “seventh day,” when the Lord rests from his labors. Situated as it was at the conclusion of the physical creation and …

How Female Bipoc Students At A Predominantly White Institution Think About Belonging: A Multiperspective Study, Delirio Juarez

Theses and Dissertations

Black, Indigenous, and People of Color (BIPOC) students at predominantly White institutions (PWIs) report decreased sense of belonging compared to White students (Hunn, 2014; Hurtado & Carter, 1997; Museus et al., 2018; Strayhorn, 2019). The study aimed to answer, "What are the daily lived experiences of BIPOC students at a PWI?" and "How do BIPOC students at a PWI describe feelings of belonging (if at all)?" The study was conducted at a private, religiously affiliated, PWI, in the Western United States. The University Belonging Questionnaire (Slaten et al., 2018) was used to sort students' feelings of belonging. Female participants who …

"I Think They're Poisoning My Mind": Understanding The Motivations Of People Who Have Voluntarily Adopted Secure Email, Warda Usman

Theses and Dissertations

Secure email systems that use end-to-end encryption are the best method we have for ensuring user privacy and security in email communication. However, the adoption of secure email remains low, with previous studies suggesting mainly that secure email is too complex or inconvenient to use. However, the perspectives of those who have, in fact, chosen to use an encrypted email system are largely overlooked. To understand these perspectives, we conducted a semi-structured interview study that aims to provide a comprehensive understanding of the mindsets underlying adoption and use of secure email services. Our participants come from a variety of countries …

Racial Empathy Gap In The Workplace: The Existence Of And Consequences For Racial Workplace Disparity Through Lack Of Empathy, Kathleen Bahr

Undergraduate Honors Theses

Extensive research has been done on racial disparities in the workplace and the racial biases and discrimination that causes and contributes to said disparities. This research explores the existence of and causes for a racial empathy gap in the workplace, focusing on empathy between peers. An experimental study was conducted with a sample of 451 people in the United States and the United Kingdom. Using a scenario experiment, I manipulated the gender and race (randomized between male or female and Black or White) of a co-worker who had a negative event occur in their life. The study showed that there …

Recommending Answers To Math Questions Using Kl-Divergence And The Approximate Xml Tree Matching Approach, Siqi Gao

Theses and Dissertations

Mathematics is the science and study of quality, structure, space, and change. It seeks out patterns, formulates new conjectures, and establishes the truth by rigorous deduction from appropriately chosen axioms and definitions. The study of mathematics makes a person better at solving problems. It gives someone skills that (s)he can use across other subjects and apply in many different job roles. In the modern world, builders use mathematics every day to do their work, since construction workers add, subtract, divide, multiply, and work with fractions. It is obvious that mathematics is a major contributor to many areas of study. For …

Morphogenetic Engineering Of Synthetic Protocell Systems, Qinyu Zhu

Theses and Dissertations

Observing and studying how life forms behave, i.e., their movement, adaptability, and so on, have enabled human beings to develop new technologies or optimize existing ones. One of the more noticeable phenomena in Nature is morphogenesis. Morphogenetic processes exist in different stages of biological development, from cellular division to tissue and organ formation. It is easy to observe shape development during mophogenesis due to emerging imaging techniques. However, it is hard to understand this process due to its complex organization, and the morphogenetic responses can be induced by a variety of chemicals or mechanical stresses and are subject to the …

Investigating Speech Perception In Children With Speech Delay, Dyslexia, And Speech Delay And Dyslexia, Lauren Marie Spencer

Theses and Dissertations

Perceptual deficits related to phonology in children with speech delay (SD) and children with dyslexia have been identified in separate lines of research. However, there has only been a small number of studies that have investigated the perceptual deficits of children with SD and/or dyslexia in the same study to better understand the overlap of their speech perception abilities. Children with SD have previously shown deficits perceiving speech stimuli that is acoustically sparse, particularly when stimuli contain speech sounds they do not produce correctly. Yet in contrast to children with dyslexia, children with SD are better able to recover linguistic …

Algorithmic Fidelity And The Use Of Large Language Models In Social Science Research, Christopher Michael Rytting

Theses and Dissertations

In this dissertation, we argue that large language models (LLMs) exhibit a considerable amount of \textit{algorithmic fidelity}, a property where they have modeled ideas, behaviors, and attitudes of the population who generated their training data. This has important implications for social science, as this fidelity theoretically allows for the use of LLMs as effective proxies for human beings in experiments and research. We demonstrate this empirically in various social science domains (political partisanship, demographic surveying, voting behavior, hot-button policy issues, news media, populism, congressional summaries), in various applications (replicating social science survey findings, assisting in coding of text datasets, inferring …

"What Would It Mean For Us To Seem 'Good' To Each Other?": Contemporary Black Women+ On Fat Phobia And Misogynoir, Devon Ariel Thomas

Theses and Dissertations

White supremacy's impact on Black bodies is well-known. Starting with the enslavement of millions of Africans and their descendants, to Reconstruction, Jim Crow laws, the race-based War on Drugs, mass incarceration, police murders--and now, through fat phobia. Fat phobia--the hatred of and discrimination against fatness--is problematic for all bodies because it limits basic opportunities and privileges. However, it becomes particularly dangerous at the intersection of structural racism and misogyny. Francis Beale argues that as both Black people and women+, Black women+ carry a "double strike" against them; consequently, they experience both racism and misogyny, termed "misogynoir" by Moya Bailey. Language …

Coaching Elementary Teachers In Literacy: Does Feedback Type Matter To Low And High Implementers?, Elizabeth Cutrer, Erica Ellsworth Miller, Erjola Gjini, Melia Fonoimoana Garrett

Faculty Publications

For literacy coaches and teachers, feedback is an integral component of effective coaching. Yet, little is understood

about the interaction between feedback and high/low implementing teachers within coaching sessions. This multiple

case study explored the types of feedback literacy coaches provided both high and low implementing teachers over a

two-year period. In the first year, the literacy coaches provided at least twice as much instructional feedback as

emotional feedback to low-implementing teachers. Those teachers not only received more feedback in general, but the

feedback they received was primarily what they needed to do to improve. In contrast, during the same …

Distribution Of Astragalus Amnis-Amissi (Fabaceae), A Plant Endemic To East-Central Idaho, Michael Daines

Western North American Naturalist

Astragalus amnis-amissi (Fabaceae), or Lost River milkvetch, is a plant endemic to east-central Idaho for which no published surveys have been completed in the last 18 years. A search for several previously documented populations in canyons of the southern Lemhi Range and the Lost River Range, in Butte and Custer Counties, Idaho, documented the species in 4 canyons. However, it was not relocated in an unnamed canyon in the southern Lemhi Range, indicating potential extirpation of 1 of 2 previously known populations documented on land managed by the USDI Bureau of Land Management. No new populations of A. amnis-amissi were …

Protections And Liabilities: Parental Attributes Of Lynch Victims, Peter Shumway Polhill

Theses and Dissertations

Minimal research has focused on how lynching was not purely an individual-level event but, at times, was a family-level process. Prior research has focused on the economic forces, social factors, and individual level attributes that changed the probability of being lynched. Research studying these topics has identified that marginalization, status, distinctiveness, and the racial threat hypothesis contribute to lynching. However, this research has not studied child victims and how parental level attributes may intersect differently with these theoretical perspectives. Using machine-learning tools, I created census linked data which identifies the families of child lynch victims and other non-victim families in …

Impacts Of Climate Change In The United States, Nathan Thompson

Ballard Brief

While every country both contributes to and feels the effects of climate change, the United States' heavy influence and high rates of contribution make this problem even more acute domestically. Climate change is primarily driven by human emission of greenhouse gases through the burning of fossil fuels and from mass-scale agriculture. Because climate change can be a polarizing issue, passing legislation to slow the harmful contributing factors has proven difficult. The effects of climate change have worsened in the past few decades, with increased instances of wildfires and extreme shifts in weather patterns. These negative consequences disproportionately affect vulnerable people …

Physiognomy And Emotional Abuse In Elizabeth Gaskell's "The Grey Woman", Natalie Ann Davis

Theses and Dissertations

Perrault's Bluebeard tale is a story of domestic abuse: Bluebeard tries to control his wife's movements by prohibiting her from entering a specific room in their chateau and attempts to kill his wife as punishment when she ultimately disobeys him. Bluebeard's violence towards his wife clearly marks him as an abuser. There have been countless other versions of the Bluebeard tale including Elizabeth Gaskell's short story "The Grey Woman." Unlike other versions of the tale that emphasize Bluebeard's physically abusive behavior, Gaskell's version focuses on a more subtle form of abuse: emotional abuse. Emotional abuse has remained an obscure topic …

Caveat Emptor: Scan Quality Of Elsevier’S Digital Backfile Pdf Collection, Gregory M. Nelson, Paul Kj Robbins, Dennis L. Eggett

Faculty Publications

Scans of journal articles originally published in print, otherwise known as digital journal backfiles, benefit library patrons by providing near instantaneous access to important older information and full-text searchability. Digital backfiles can serve as a reliable surrogate for their corresponding print journals which could be removed from the library, freeing up space for other patron services. Both benefits are realized when the scanned articles are of sufficient clarity to replace the print versions. Several studies have analyzed small and subject-narrow sections of Elsevier’s digital backfile. This article contains a scan-quality analysis from 1578 journals that contain nearly four million articles …

Assessing The Role Of Hybridization In The Evolution Of Two Common Lineages Of Lichen-Forming Fungi, Rachel Keuler

Theses and Dissertations

Once thought to be an evolutionary dead-end, hybridization is now being detected in genomes across kingdoms, perhaps even playing an integral role in evolution. In chapter 1, I investigated the potential influences of hybridization on the evolution of a group of vagrant, asexual species in the Rhizoplaca melanophthalma species group. I sequenced the mitochondrial and nuclear genomes of 55 specimens and found well-supported nuclear phylogenies of both datasets. There were, however, multiple instances of discordance between the mitochondrial and nuclear trees, which can be caused by hybridization. PhyloNet and ABBA-BABA also detected widespread hybridization among this group. In chapter 2, …

Popr: Probabilistic Offline Policy Ranking With Expert Data, Trevor F. Schwantes

Theses and Dissertations

While existing off-policy evaluation (OPE) methods typically estimate the value of a policy, in real-world applications, OPE is often used to compare and rank policies before deploying them in the real world. This is also known as the offline policy ranking problem. While one can rank the policies based on point estimates from OPE, it is beneficial to estimate the full distribution of outcomes for policy ranking and selection. This paper introduces Probabilistic Offline Policy Ranking that works with expert trajectories. It introduces rigorous statistical inference capabilities to offline evaluation, which facilitates probabilistic comparisons of candidate policies before they are …

Trauma Team Communication During Trauma Resuscitation: A Literature Review, Paula Barney

Student Works

Trauma teams nationwide are tasked with stabilizing and treating severely injured patients. Their work is unpredictable and must be carried out quickly to improve patient outcomes. Effective team communication is imperative. Team members communicating to form shared understanding of patient status and care goals supports high-level team function. Clear communication is essential. Team members should use closed-loop communication when appropriate, use brief and direct statements, and limit noise in trauma rooms. Team leaders support trauma team performance by providing updates on patient status and plans of care and fostering a culture of collaboration between team leaders and team members. Team …

A Longitudinal Look: How Sleep Impacts Suicidal Thoughts And Behaviors In Autism And Social Anxiety, Lindsay Jacalyn Regehr

Theses and Dissertations

Crucial research about suicidal thoughts and behaviors is often done in a cross-sectional manner that only considers limited risk factors. This research is limited in scope and rarely produces meaningful results to inform treatment. This study uses a longitudinal design to follow 93 participants over approximately 6 months. Participants are individuals with autism and social anxiety who were part of high-risk groups for suicidality, sleep problems, and social isolation. Participants recorded their sleep patterns and suicidal thoughts daily via the phone app MetricWire and continuously wore a GENEActiv actigraphy device to tract their objective sleep patterns. The Columbia Suicide Severity …

The Morpheme -Ga In Pastaza Quichua, Charles W. Alger

Theses and Dissertations

Pastaza Quichua (PQ) is a member of the Quechua IIB branch of Quechuan languages and has a rich morphology. However, this richness is often over-simplified for the sake of simpler explanation. Most Quechuan languages have a morpheme that is usually spelt -ga, -ka or -qa, and is described as a topicalizing clitic. In this thesis, I will examine the morpheme -ga in PQ, which, like its cognates, is often said to be a topicalizing clitic, despite the fact that it frequently breaks traditional rules for both topic marking and clitic-hood. I find that -ga is a topic marker according to …

The Effect Of Musical Training On Second Language Grammar Acquisition, Deven Joseph Hunsaker

Theses and Dissertations

Music's effect on non-musical domains has been an area of intense research. Musical training has been shown to positively affect the processing of phonology, lexical tone, and syntax. While music also has positive effects in second language phonology acquisition, its effect on grammar acquisition is contested. This thesis aimed to study the under-researched topic of music and second language grammar acquisition using electroencephalography (EEG), thereby studying the electrical responses of the brain. Beginning level Spanish students were trained on a new grammatical principle prior to performing a grammaticality judgment task, and their behavioral and neural results were analyzed. Those students …

Becoming Good: Muslims Pursuing Moral Personhood In A Rural French Town, Clayton S. Van Woerkom

Theses and Dissertations

This thesis examines how members of a Muslim community (made up of migrants and their descendants from various parts of North Africa, West Africa, Turkey, and elsewhere) in a small town in France seek to become moral persons through Islam. I argue that this quest for moral recognition is informed simultaneously by Islamic and French Republican values, which my French Muslim interlocutors usually conceive of as being consistent with one another. I contrast this analysis with other scholarly approaches to Islam in France that have generally explored the way non-Muslims perceive Islam to be at odds with Frenchness, how Muslims …

Introducing Stochastic Time Delays In Gradient Optimization As A Method For Complex Loss Surface Navigation In High-Dimensional Settings, Eric Benson Manner

Theses and Dissertations

Time delays are an inherent part of real-world systems. Besides the apparent slowing of the system, these time delays often cause destabilization in otherwise stable systems, and perhaps even more unexpectedly, can stabilize an unstable system. Here, we propose the Stochastic Time-Delayed Adaptation as a method for improving optimization on certain high-dimensional surfaces, which simply wraps a known optimizer --such as the Adam optimizer-- and is able to add a variety of time-delays. We begin by exploring time delays on certain gradient-based optimization methods and their affect on the optimizer's convergence properties. These optimizers include the standard gradient descent method …

Viejo Period Architecture In The Casas Grandes Region Of Northern Mexico, Samuel J. Jensen

Theses and Dissertations

The Casas Grandes region of northern Mexico is an understudied, though important, part of the culture area that has come to be known as the Northwest/Southwest (NW/SW). What studies have been conducted in the Casas Grandes region have focused on the Medio Period (approximately 1200-1450 AD) and the large site of Paquimé. Only a small amount of research has been conducted on the preceding Viejo Period (approximately 700-1200 AD). In this thesis, I create a clearing house of published Viejo Period architectural features excavated in the Casas Grandes region. I also analyze those features to develop our understanding of the …

A Statistical Approach For Analyzing Expectations Alignment Between Design Teams And Their Project Stakeholders, Matthew Christian Goodson

Theses and Dissertations

Successful project management requires continuous communication aligning the expectations between project stakeholders and the project team. Expectations include both product expectations (how the product will look, feel, and perform) and programmatic expectations (timelines, deliverables, expenditure of project resources). In order to make the most effective use of project resources throughout the life of the project, a process or tool for quickly aligning expectations as closely as possible should be employed early on in the project. Project management literature is lacking in tools for aligning expectations, and solutions and best practices need to be determined since the current best option is …

Determining Factors In Self-Guided Language Learning: Comparing More And Less Successful Learners, S. Daniel Wright

Theses and Dissertations

Informal language learners from extended language immersion settings such as missionaries often have very disparate outcomes. Some learners achieve high proficiency levels while others fossilize in their interlanguage once they reach basic communicative competence. Could these differences in language outcomes be explained by learning strategies, motivation, or other psychological factors? To investigate these differences, 20 participants were selected based on participation in a post-mission language ability self-assessment resource (LASER) who had taken an Oral Proficiency Interview – Computer (OPIc). These learners were interviewed to probe beyond the LASER and discover what factors seemed to correlate with higher language proficiency outcomes. …

Gradient-Based Optimization Of Highly Flexible Aeroelastic Structures, Taylor G. Mcdonnell

Theses and Dissertations

Design optimization is a method that can be used to automate the design process to obtain better results. When applied to aeroelastic structures, design optimization often leads to the creation of highly flexible aeroelastic structures. There are, however, a number of conventional design procedures that must be modified when dealing with highly flexible aeroelastic structures. First, the deformed geometry must be the baseline for weight, structural, and stability analyses. Second, potential couplings between aeroelasticity and rigid-body dynamics must be considered. Third, dynamic analyses must be modified to handle large nonlinear displacements. These modifications to the conventional design process significantly increase …

Zero And Few-Shot Concept Learning With Pre-Trained Embeddings, Jamison M. Moody

Theses and Dissertations

Neural networks typically struggle with reasoning tasks on out of domain data, something that humans can more easily adapt to. Humans come with prior knowledge of concepts and can segment their environment into building blocks (such as objects) that allow them to reason effectively in unfamiliar situations. Using this intuition, we train a network that utilizes fixed embeddings from the CLIP (Contrastive Language--Image Pre-training) model to do a simple task that the original CLIP model struggles with. The network learns concepts (such as "collide" and "avoid") in a supervised source domain in such a way that the network can adapt …