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The Generation Of Terahertz Light And Its Applications In The Study Of Vibrational Motion, Aldair Alejandro

Theses and Dissertations

Terahertz (THz) spectroscopy is a powerful tool that uses ultrashort pulses of light to study the properties of materials on picosecond time scales. THz light can be generated through a variety of methods. In our lab, we generate THz through the process of optical rectification in nonlinear optical (NLO) organic crystals. THz light can be used to study several phenomena in materials, such as spin precession, electron acceleration, vibrational and rotational motion. The work presented in this dissertation is divided into two parts: (1) the generation of THz light and (2) applications of THz light. The first portion of this …

Multifunctional And Moisture Tolerant Zinc-Based Mono- And Bi-Metallic Metal-Organic Framework (Mof) Thin Films, Emmanuel Agbata

Theses and Dissertations

Many applications of metal-organic frameworks (MOFs) are highly dependent on their structures. The type and consistency of structure inform their properties. Zinc-based MOFs are applicable in different fields because of the low toxicity of zinc materials and are therefore also useful for catalysis. While MOF-5, a zinc-based MOF with carboxylate linkers is moisture intolerant, a variant of this is moisture tolerant. The introduction of a nitrogen-based linker in the zinc MOF which renders the structure moisture-tolerant. This material has not been explored as much, despite its multifunctional properties. Furthermore, the growth of Zn-based bimetallics of this MOF has not yet …

Modified Coulomb Approach For Squat Silos, Mitchell Cade South

Theses and Dissertations

Traditional methods for calculating lateral pressures in silos, such as Janssen's Method and Coulomb's Method, have limitations due to the underlying assumptions of each methodology. This research investigates an approach which adapts Coulomb's Method to account for the cylindrical geometry of silos. The Silo Wedge Method (SWM) distinguishes between two cases based on the aspect ratio (height/diameter) of the silo. Comparative analysis reveals that the SWM accurately matches Coulomb's Method for linear retaining walls when the silo aspect ratio approaches zero. As the aspect ratio increases above 0.25, the SWM exhibits behavior similar to Janssen's Method. This suggests a potential …

Development Of Zr(Iv) Mof-Enabled Nerve Agent Electrochemical Hydrolysis Sensors, Tyler James Marlar

Theses and Dissertations

Nerve agents are acetylcholinesterase inhibitors and among the most toxic chemical warfare agents ever synthesized. Detection of these chemicals is critical for the protection of populations and strategic resources. G-series nerve agents are volatile compounds. V-series nerve agents are persistent phosphonothioate compounds. Persistent nerve agents do not readily volatilize and can contaminate environmental resources for extended periods. While nerve agents are inherently non-electroactive, they can be hydrolyzed to electroactive products compatible with electrochemical sensing. Zr(IV) MOFs are next-generation nanoporous materials, which have been shown to rapidly catalyze nerve agent hydrolysis. In this work, the catalytic processes of MOF-808, a specific …

Studio As Laboratory: Prioritizing Artistic Fluency Through The Morphogenesis Of Paper, Jeannette Lina Neal

Theses and Dissertations

This paper describes a curriculum designed to examine relationships between artistic fluency in middle school art classrooms, and a robust year-long paper curriculum. A sustained focus with one material, such as paper, combined with relevant artists and investigative skills activities was designed to increase artistic fluency during a time when students often experience a decline in identity and confidence. Concerns with the U-curve theory suggest that many factors affect the continuity of art during these crucial years of school. Educational standards of the Reggio Emilia Approach can be applied to secondary education, encouraging both students and educator to create dynamic …

Developing An Artistic Self In Preservice Elementary Teachers: A Studio Art Curriculum To Promote Art Integration, Karilee D. Park

Theses and Dissertations

With the continual use of standardized testing, teaching art in schools, particularly elementary schools, often falls to generalist teachers with little to no experience in art. While art can be integrated into daily curriculum for deeper and lasting learning, without the proper training or support, generalist teachers are left to implement art as they encountered it in the past, if at all. Artistic anxiety and culturally misappropriated artistic experiences result in the arts being used inefficiently or avoided completely. Creating a curriculum for preservice elementary generalist teachers, I explored art integration through developing artistic confidence, skill, and identity for 16 …

General Non-Destructive Evaluation For Friction Stir Welding, Johnathon Bryce Hunt

Theses and Dissertations

Friction stir welding (FSW) is an advantageous solid state joining method for many different engineering designs. It was invented in 1991 by TWI and since that time a tremendous amount of research has been executed to understand and implement FSW in a myriad of materials in numerous industries such as aerospace, ship building, train, automotive, energy, agriculture and others. Most industries have strict weld inspection processes to validate a weld before it is put into service. One of the main weld characteristics that is measured is the size of any subsurface volumetric voids. The current standard to test friction stir …

Time-Dependent Strain-Resistance Relationships In Silicone Nanocomposite Sensors, Alex Mikal Wonnacott

Theses and Dissertations

Flexible high-deflection strain gauges have been demonstrated as cost-effective and accessible sensors for capturing human biomechanical deformations. However, the interpretation of these sensors is notably more complex compared to conventional strain gauges, partially owing to the viscoelastic nature of the strain gauges. On top of the non-linear viscoelastic behavior, dynamic resistance response is even more difficult to capture due to spikes in resistance during strain changes. This research examines the relationships between stress, strain, and resistance in nanocomposite sensors during dynamic strain situations. Under the assumption that both macroscopic stress and resistance are governed by microscopic stress concentrations at the …

Combined Radiation And Convection In Developing Flow In A Parallel Plate Channel With Real Gas Behavior, Kyle Davis Pulsipher

Theses and Dissertations

The laminar, thermally developing flow of gases in a two-dimensional parallel plate channel is studied here. Using computational fluid dynamics (CFD), the combined effects of convection and real gas radiation are explored. Gas mixtures composed of H2O, CO2, and N2 are considered. To account for radiation in the participating medium, the Spectral Line Weighted-sum-of-gray-gases model is used. The model formulation, verification, and validation are provided through published articles written by the primary author. The predictions made for the case of combined convection and radiation are compared to the solution for the classical pure convection case, known as the Graetz solution. …

Psychotherapy Client Termination Patterns And Outcomes: A Large Follow-Up Study, Including Zero-, One-, And Two-Session Cases, Adam Victor Mcdonald

Theses and Dissertations

Empirical research examining psychotherapy clients' post treatment outcomes for all case lengths and their reasons for discontinuing treatment is limited in the literature, particularly for shorter case lengths. Research indicates that clients with zero-, one-, and two-session case lengths are the most common in psychotherapy (Howard et al., 1986; Nielsen et al., 2016; Phillips, 1985; Phillips 1987); and yet, little is known about these clients. The purpose of this study is to better understand these termination patterns and outcomes for the most common case lengths. Outcomes were measured with the Outcome Questionnaire-45 total score (OQ-45; Lambert et al., 2004). Client …

Investigating Which Muscles Are Most Responsible For Tremor Through Both Experimental Data And Simulation, Daniel Benjamin Free

Theses and Dissertations

Tremor affects millions of people and many patients desire alternative treatment options to medication or neural surgery. Peripheral suppression techniques are gaining greater use, but are currently applied in a trial-and-error method. To optimize these techniques, the muscles most responsible for an individual patient's tremor need to be identified. In this dissertation, I explored two parallel paths that both could aid in identifying muscles responsible for tremor. The first method utilizies measured data and a technique (coherence) that quantifies the frequency dependent correlation between two signals. Using coherence to identify muscles contributing to tremor requires at least two parts: an …

Project-Based Learning: An Online Support Product For Scaffolding The Professional Development In China, Yenny Mo

Instructional Psychology and Technology Graduate Student Projects

This project was a collaboration between Brigham Young University (BYU) in Provo, Utah, U.S.A., and Beijing Normal University (BNU) in Beijing, China. It aimed to enhance the effectiveness of the existing professional development (PD) program at BNU by developing an online support product. The PD program focuses on developing project-based learning (PjBL) cases and its implementation in a classroom.

This online support product that scaffolds the PD program using Articulate Storyline 360. Through a strategic integration of the ADDIE and RP models, I have created a tool that facilitates faster comprehension of PjBL concepts, enables effective design of driving questions, …

Applying Mathematical Modeling To The Study Of Family Systems, Dahlia Maxwell

Theses and Dissertations

Mathematical modeling provides a powerful framework for insight into current scientific theories as well as hypothesis generation for further research. Despite its undeniable potential to enrich scientific advancement, the application of mathematical modeling remains conspicuously scarce in the field of family science. The complexity inherent in family dynamics, coupled with the intricate interplay of emotions in the individual, underscores the necessity of a robust analytical approach. Addressing this critical gap in the literature, this thesis introduces a sophisticated mathematical model of family dynamics integrating essential elements from family systems theory, emotion dynamics, and appraisal theory. The model is implemented as …

Advancing Single-Cell Proteomics Through Innovations In Liquid Chromatography And Mass Spectrometry, Kei Grant Isaac Webber

Theses and Dissertations

Traditional proteomics studies can measure many protein biomarkers simultaneously from a single patient-derived sample, promising the possibility of syndromic diagnoses of multiple diseases sharing common symptoms. However, precious cellular-level information is lost in conventional bulk-scale studies that measure tissues comprising many types of cells. As single cells are the building blocks of organisms and are easier to biopsy than traditional bulk samples, performing proteomics on a single-cell level would benefit clinicians and patients. Single-cell proteomics, combined with mass spectrometry imaging, can be used to analyze cells in their microenvironment, preserving spatial information. We have previously used laser-capture microdissection to isolate …

The Effects Of Racial Prejudice And Humanization On Private Aid Donations, Mary Harris, Ashlynn Hokanson, Zeke Peters, Phoebe Roberts, Daniel Nielson

Sigma: Journal of Political and International Studies

World Vision predicts that there are more than 719 million people living in poverty (Peer 2023). Charitable organizations often strive to fill gaps of government programs and alleviate poverty by offering food, clothing, and support to these millions of individuals in need. To be successful in realizing the goals of these charitable organizations, the quantity of charitable donations must be large to create change. Charitable organizations regularly attempt to obtain donations through means of advertising; however, are these methods of advertising effective in soliciting donations to help underprivileged populations across the globe? By improving the understanding of effective donation solicitation …

Robot Proficiency Self-Assessment Using Assumption-Alignment Tracking, Xuan Cao

Theses and Dissertations

A robot is proficient if its performance for its task(s) satisfies a specific standard. While the design of autonomous robots often emphasizes such proficiency, another important attribute of autonomous robot systems is their ability to evaluate their own proficiency. A robot should be able to conduct proficiency self-assessment (PSA), i.e. assess how well it can perform a task before, during, and after it has attempted the task. We propose the assumption-alignment tracking (AAT) method, which provides time-indexed assessments of the veracity of robot generators' assumptions, for designing autonomous robots that can effectively evaluate their own performance. AAT can be considered …

Prison Labor: The Ethical And Economic Implications Of Rethinking The Thirteenth Amendment And Fair Labor Standards Act, Peter Holland

Brigham Young University Prelaw Review

Prisoners have historically been paid extremely low wages, if any, for the jobs they perform while incarcerated. The Thirteenth Amendment, which made slavery illegal except as a punishment for crime, has often been used to validate this practice. This paper will argue that denying prisoners minimum wage is a misapplication of both the Thirteenth Amendment and the Fair Labor Standards Act. Additionally, the paper claims that paying prisoners minimum wage would have many positive economic consequences.

Latest Research (Summaries) On Charitable Giving, Angie Holzer

Journal of Nonprofit Innovation

No abstract provided.

Charitable Giving: Full Issue, Angie Holzer

Journal of Nonprofit Innovation

No abstract provided.

Rfi Mitigation And Discrete Digital Signal Processing Rfsoc Algorithm Implementations For Radio Astronomy And Wideband Communication Systems, Devon Christopher Ward

Theses and Dissertations

Due to the massive increase of active transmitters broadcasting over wideband frequencies, such as 5G wireless systems, LEO/MEO satellites, satellite constellations, and the increase of IoT devices in the average home, the radio frequency spectrum is becoming more and more congested by interference. Passive receivers face additional challenges due to the growing use of wideband frequency transmissions aimed at boosting communication system throughput. As a result, passive receivers must adopt more robust and intricate techniques to mitigate radio frequency interference. A proposed RFI removal system, known as the true time delay Hadamard projection algorithm, has been introduced in previous work …

Transformational Experiences And Decision-Making Processes: Factors Influencing The Choice Of College Major, Ashley Hunsaker

Undergraduate Honors Theses

This thesis examines the influence of transformational experiences on decision making when it comes to choosing one’s major. Participants attended a one-on-one interview with the primary researcher where questions were asked about how they chose their major and how much they enjoy it. Participants were given the chance to tell stories about how they discovered their major and how they decided to pursue it. Results suggested that transformational experiences, internal and external factors, and mentorship led students to choose and stick with a major where they felt a sense of belonging and “fit.” When belonging and perceived fit were not …

"Always Leading Out In That Which Is Great And Good": Mormon Women's Perspective Of Women's Rights Fifty Years After Suffrage, Ashley Anderson Webb

The Thetean: A Student Journal for Scholarly Historical Writing

On a cold Thursday in eartly February 1920, newly enfranchised women from across che nation huddled together in Chicago for a seven-day-long Golden Jubilee. The anticipated passage of the Nineteenth Amendment lay only three scares' ratification and half a year away. That same Thursday, women in Utah looked back half a century co 12 February 1870, when che Utah Territory granted its women the right co vote. While reflecting on their own history, Utah's women also case their eyes outward, joining their sisters throughout the US who looked forward co the future of nationwide suffrage. Many prominent female leaders of …

Cold And Traffic Tolerance Of Hybrid Bermudagrass And Kentucky Bluegrass In A Cool Season, Arid Climate, Caden J. Seely, H. Burgin, N. Hansen, G. Wear, Bryan G. Hopkins

Library/Life Sciences Undergraduate Poster Competition 2024

• Due to climate change, warm-season Hybrid Bermudagrass (HBG) is beginning to be grown in northern climates.
• This is potentially desirable because it may use less water than traditional species.
• However, there is concern regarding winter kill and excessively long dormant periods.
• There is particular interest in HBG with regards to sports turf, but there is concern with its ability to withstand heavy traffic damage when grown in a cool-season climate.

Objective: Assess the cold and traffic tolerance of common Bermudagrass [CBG; Cynodon dactylon (L) Pers.] and seven triploid interspecific hybrids (HBG; Cynodon dactylon × C. transvaalensis Burtt Davy) in …

The Biomechanics Of Ursine Predation: Investigating The Force Generation And Mechanical Properties Of Bear Claws And Teeth In Predatory Behavior, Katie Dooley, Megan Doxey, Josh Jewell, Tom Smith

Library/Life Sciences Undergraduate Poster Competition 2024

• Studied over 2,200 human-bear conflicts in North America and witnessed the shear force that bears can exert to access food and eliminate any threats.
• Polar bears at the Hogle Zoo in Salt Lake City punctured and bent high density polyurethane (HDPE) objects when playing with them.
• This prompted research into the force it takes bears to puncture objects with their canines and claws.

Reproduce Or Live Longer?: A Life History Analysis Of Black Bears In A Semiarid Environment, Brenden M. Orocu, Cambria Armstrong, Janene Auger, Hal L. Black, Randy T. Larsen, Brock R. Mcmillan, Mark C. Belk

Library/Life Sciences Undergraduate Poster Competition 2024

In population demographics, each population has an age stage vital rate (fecundity and survival) in its life history that has the greatest influence on the asymptotic population growth rate, λ.

American black bears (Ursus americanus) are found throughout North America. Other studies on population demographics have focused on populations in higher resource availability areas but none in semiarid environments where resource scarcity is a result of the variable climate.

Objective

Our objective was to determine if factors influencing population dynamics of black bears in semi-arid environments were similar to factors affecting population dynamics in mesic environments where …

Cell Motion And Multicellular Organization: A Mathematical Model For Pattern Formation In The Dictyostelium Discoideum Slug, Henry Tullis, Emily Evans, John Dallon

Library/Life Sciences Undergraduate Poster Competition 2024

Understanding multicellular behavior is key to biology and medicine

• Embryonic development requires coordinated cell motion, differentiation
• Wound healing also relies on emergent multicellular processes
• Dictyostelium discoideum (Dd) has been identified as a model organism for biomedical research, partly because it is a simple example of multicellularity
• Understanding Dd can improve, inform approaches to these tricky problems

A Rare Plant In Peril: Conservation Concerns For An Endemic Alpine Plant, Ipomopsis Spicata Ssp Tridactyla, Kainoa Bolinder, Loreen Allphin, Madison Huie, Steven Flinders

Library/Life Sciences Undergraduate Poster Competition 2024

Ipomopsis spicata ssp. tridactyla, (I. tridactyla or IPTR; Fig. 2 & 12), is a rare alpine plant species endemic to the Tushar Mountains and Markagunt Plateau of southern Utah. There is limited knowledge available about population dynamics and community composition. Due to difficult abiotic conditions, alpine environments are more vulnerable to lasting damage from disturbance (Scherrer & Pickering, 2005). Ipomopsis tridactyla is listed as high-priority for conservation (Alexander, 2016). As conservation concerns for alpine plant communities increase due to climate change (Kopp & Cleland, 2013), so does the need for long-term monitoring of plant populations. Thus, we set …

N-H Nhc Palladium Catalysts Derived From Unique 2-Phosphinoimidazole Precursors For C-C Cross Coupling Reactions And Application Of Slow Releasing Polymers Impregnated With Gibberellic Acid To Overcome Seed Dormancy For Land Reclamation, Alexandra Jean Setelin Larson

Theses and Dissertations

Organometallic chemistry is highly dependent upon the ligands which are employed on a metal's surface. These ligands control steric bulk and electronics of the metal center which can change the reactivity of the organometallic complex. Ligands that are standard in organometallic chemistry include phosphine ligands. These phosphine ligands have been utilized in the field since the 1960's and have shaped the development of many key organometallic catalysts. Phosphine ligands are easily functionalized and highly reactive. This increased reactivity, however, causes severe limitations as phosphine ligands are often unstable under standard benchtop conditions and must be handled both air and moisture …

Silicates As An Explanation For Discrepancies In Atmospheric Modeling Of L-Type Brown Dwarfs, Zacory Shakespear

Undergraduate Honors Theses

Forward retrieval modeling is a powerful method for classifying brown dwarf atmospheres and their physical parameters. However, the results of this method are only as good as the models compared against the data. Silicates in the atmospheres of L-type brown dwarfs have been shown to cause model overfitting around $10 \mu m$, but it is not known what impact, if any, these silicates have on other portions of brown dwarf atmospheric spectra. I report a preliminary negative correlation between model overfitting at $10 \mu m$ and model underfitting from $3.5-4.25 \mu m$ using spectra from two L-dwarfs from JWST and …

Explainable Ai Using Assumption-Alignment Tracking On Multiple Algorithms, Darien Campbell

Undergraduate Honors Theses

Autonomous robots are becoming increasingly prevalent in our everyday lives. In order for humans to effectively take advantage of automated systems, robots need to understand their limitations across different environment states, recognize when they need user assistance, and effectively communicate their assessments to human users. The ability of AI systems to communicate their decision process is referred to as Explainable AI.

Research has already been done on how a robot should evaluate its proficiency to predict how well it can perform a task [1]. This thesis explores current Social Science research on how humans explain their own behaviors. These insights …