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Evaluating The Use Of The L1 In A French Language Classroom, Joyce Esther Hiaumiti Guidi
Evaluating The Use Of The L1 In A French Language Classroom, Joyce Esther Hiaumiti Guidi
Theses and Dissertations
Researchers have explored how different balances of first language (L1) and target language (TL) use in a foreign language classroom impact students' fluency and proficiency in TL acquisition. Research has shown that the use of the L1 in a foreign language classroom is done in order to determine the most effective way to raise the proficiency of second language learners to the level that is expected within their classrooms (Lee & Muncie, 2006). The use of the L1 is not something that is uncommon, even in the highest levels of foreign language instruction, although some believe it could inhibit learner …
A Comparison Of The Effects Of Heat Therapy And Exercise Training On Vascular Function During Passive And Active Exercise, Taysom Erica Wallace
A Comparison Of The Effects Of Heat Therapy And Exercise Training On Vascular Function During Passive And Active Exercise, Taysom Erica Wallace
Theses and Dissertations
Recent evidence suggests that heat, a major byproduct of exercise, may be the mediator for many vascular adaptations that come from exercise. Thus, heat therapy that increases muscle temperature in a comparable way to exercise may be an advantageous alternative for enhancing cardiovascular health in individuals where treatment with exercise is either not possible or undesired. PURPOSE: Compare the effects of exercise and heat training on resistance artery function at rest and during exercise. METHODS: Thirty-five (18 female) healthy, untrained subjects completed a 6-week training program utilizing either high intensity knee extension (KE) exercise (40 min), localized heat therapy (pulsed …
Investigation Of Lithium-Ion Battery Electrode Fabrication Through A Predictive Particle-Scale Model Validated By Experiments, Mojdeh Nikpour
Investigation Of Lithium-Ion Battery Electrode Fabrication Through A Predictive Particle-Scale Model Validated By Experiments, Mojdeh Nikpour
Theses and Dissertations
Next-generation batteries with improved microstructure and performance are on their way to meet the market demands for high-energy and power storage systems. Among different types of batteries, Li-ion batteries remain the best choice for their high energy density and long lifetime. There is a constant but slow improvement in Li-ion batteries by developing new materials and fabrication techniques. However, further improvements are still needed to meet government and industry goals for cost, cycling performance, and cell lifetime. A fundamental understanding of particle-level interactions can shed light on designing new porous electrodes for high-performance batteries. This is a complex problem because …
Temperature Relaxation And Magnetically Suppressed Expansion In Strongly Coupled Ultracold Neutral Plasmas, Robert Tucker Sprenkle
Temperature Relaxation And Magnetically Suppressed Expansion In Strongly Coupled Ultracold Neutral Plasmas, Robert Tucker Sprenkle
Theses and Dissertations
Ultracold neutral plasmas provide a platform for studying transport properties in an idealized environment. In this dissertation, transport properties in a Ca$^+$/Yb$^+$ dual species ultracold neutral plasma and a Ca$^+$ magnetized ultracold neutral plasma are studied. In dual species plasmas, we study ion-ion temperature relaxation. We compare measured relaxation rates with atomistic simulations and a range of popular theories. Our work validates the assumptions and capabilities of molecular dynamic simulations and invalidates theoretical models in this regime. This work illustrates an approach for precision determinations of detailed material properties in Coulomb mixtures across a wide range of conditions. We also …
A Visually Realistic Simulator For Autonomous Evtol Aircraft, Seth M. Nielsen
A Visually Realistic Simulator For Autonomous Evtol Aircraft, Seth M. Nielsen
Theses and Dissertations
Electrically powered vertical takeoff and landing (eVTOL) aircraft could provide a new mode of air transportation of people and cargo that is low-cost, on-demand, and able to reach more areas than is possible with current technology. They have the unique ability to takeoff and land in congested spaces yet efficiently travel long distances which makes them a promising technology for applications such as rapid medical assistance, automated package delivery, or human transportation. This type of aircraft has only recently become a possibility, owing to advancements in battery technology, computing power, and sensor technologies, and thus support for eVTOLs is lacking …
Development And Characterization Of An Underwater Acoustics Laboratory Via In Situ Impedance Boundary Measurements, Cameron Taylor Vongsawad
Development And Characterization Of An Underwater Acoustics Laboratory Via In Situ Impedance Boundary Measurements, Cameron Taylor Vongsawad
Theses and Dissertations
Modeling underwater acoustic propagation comes with a variety of challenges due to the need for proper characterization of the environmental conditions. These conditions include ever changing and complex water properties as well as boundary conditions. The BYU underwater acoustics open-air tank test-bed and measurement chain were developed to study underwater acoustic propagation within a controlled environment. It was also developed to provide ways to test and validate ocean models without the high cost associated with obtaining open ocean measurements. However, tank measurements require additional characterization of boundary conditions associated with the walls of the tank which would not be present …
Bayesian, Frequentist, And Information Geometry Approaches To Parametric Uncertainty Quantification Of Classical Empirical Interatomic Potentials, Yonatan Kurniawan
Bayesian, Frequentist, And Information Geometry Approaches To Parametric Uncertainty Quantification Of Classical Empirical Interatomic Potentials, Yonatan Kurniawan
Theses and Dissertations
Uncertainty quantification (UQ) is an increasingly important part of materials modeling. In this paper, we consider the problem of quantifying parametric uncertainty in classical empirical interatomic potentials (IPs). Previous work based on local sensitivity analysis using the Fisher Information has shown that IPs are sloppy, i.e., are insensitive to coordinated changes of many parameter combinations. We confirm these results and further explore the non-local statistics in the context of sloppy model analysis using both Bayesian (MCMC) and Frequentist (profile likelihood) methods. We interface these tools with the Knowledgebase of Interatomic Models (OpenKIM) and study three models based on the Lennard-Jones, …
Laser Forming Of Compliant Mechanisms And Flat-Foldable Furniture, Daniel Calvin Ames
Laser Forming Of Compliant Mechanisms And Flat-Foldable Furniture, Daniel Calvin Ames
Theses and Dissertations
Compliant mechanisms are useful for improving existing machines and creating new ones that were not previously possible. They also help us to think of new methods and technologies needed to both improve existing systems as well as manufacture systems that have not been done before. The purpose of this thesis is to show novel implementations of compliant mechanisms into folding systems, and to show new methods for fabricating such mechanisms with nontraditional materials and on difficult scales. Folding systems are shown in furniture applications with chairs, stools, and childcare furniture applications as results of research into how such structures could …
Pentagonal Extensions Of The Rationals Ramified At A Single Prime, Pablo Miguel Rodriguez
Pentagonal Extensions Of The Rationals Ramified At A Single Prime, Pablo Miguel Rodriguez
Theses and Dissertations
In this thesis, we define a certain group of order 160, which we call a hyperpentagonal group, and we prove that every totally real D5-extension of the rationals ramified at only one prime is contained in a hyperpentagonal extension of the rationals. This generalizes a result of Doud and Childers (originally conjectured by Wong) that every totally real S3 extension of the rationals ramified at only one prime is contained in an S4 extension.
Prediction Equations To Determine Induced Force On Reinforcing Elements Due To Laterally Loaded Piles Behind Mse Wall And Lateral Load Test On Dense Sand, Pedro David Garcia Montesinos
Prediction Equations To Determine Induced Force On Reinforcing Elements Due To Laterally Loaded Piles Behind Mse Wall And Lateral Load Test On Dense Sand, Pedro David Garcia Montesinos
Theses and Dissertations
Researchers performed 35 full-scale lateral load tests on piles driven within the reinforcement zone of a mechanically stabilized earth wall (MSE wall). Data defining the induced tensile force on the reinforcements during lateral pile loading was used to develop multi-linear regression equations to predict the induced tensile force. Equations were developed by previous researchers that did not consider the diameter of the pile, the fixed head condition, relative compaction, or cyclic loading. The purpose of this research was to include this tensile force data and develop prediction equations that considered these variables. Additionally, a full-scale lateral load test was performed …
An Analysis Of Two Photometric Redshift Methods And Their Uses For Finding Void Galaxies, Rochelle J. Steele
An Analysis Of Two Photometric Redshift Methods And Their Uses For Finding Void Galaxies, Rochelle J. Steele
Theses and Dissertations
An extensive survey of extragalactic objects with accurate distances is difficult to perform. Distance at that scale is commonly found with redshift and most easily identified with spectroscopic observations, which are time intensive. This is especially a concern when surveying for the elusive, possibly non-existent dwarf galaxies in the centers of voids, whose light would be so faint that a spectroscopic survey to find them would be unreasonably time consuming. Photometric methods to calculate redshift could provide a much quicker way to find distance, but the photometric methods used thus far are characterized by large errors that make them unusable …
Blended Language Learning: The Decision-Making Process In Designing A Blended Portuguese Course, Camellia Hill
Blended Language Learning: The Decision-Making Process In Designing A Blended Portuguese Course, Camellia Hill
Theses and Dissertations
This study identifies how content specialists, instructors, and instructional designers made decisions about what content to teach in person and what to teach online for a second year Portuguese university course. Qualitative vignettes around three course design participants highlight emergent themes and course artifacts from their interviews that show how they made decisions about what learning opportunities to do online and what to leave in person. The blended language course involved Canvas learning management system with two additional main technology tools used in development: GoReact and H5P. The results are subdivided to reflect the views of the instructional designer, the …
Restricted Microbial Presence, Activity, And Community Structuring Within Dry Valley Soils Of Antarctica, Scott Fillerup George
Restricted Microbial Presence, Activity, And Community Structuring Within Dry Valley Soils Of Antarctica, Scott Fillerup George
Theses and Dissertations
The McMurdo Dry Valley region is the largest ice-free area of Antarctica. Harsh abiotic conditions of the polar desert ecosystem, including extreme cold, aridity, and limited nutrient availability select for unique taxa. The comparatively simple terrestrial ecosystem is well-suited for investigating edaphic influences on microbial presence, activity, and community structuring. The Dry Valleys are viewed as a useful analog for Mars astrobiology investigations. However, most biotic investigations have been focused on lower elevations, where an understanding of edaphic effects on microbial communities within its generally more favorable conditions has emerged. Transiently wetted Dry Valley water tracks may be analogous to …
Advancing Cell-Free Protein Synthesis Systems For On-Demand Next-Generation Protein Therapeutics And Clinical Diagnostics, Emily Ann Long Zhao
Advancing Cell-Free Protein Synthesis Systems For On-Demand Next-Generation Protein Therapeutics And Clinical Diagnostics, Emily Ann Long Zhao
Theses and Dissertations
Recombinant proteins have many medical and industrial applications, but their use is complicated by commercial production and stability constraints. These issues are particularly challenging for recombinant proteins used in pharmaceutical therapeutics and clinical diagnostics. Expensive production and distribution limit the accessibility of therapeutics and diagnostics especially in the developing world. Additionally, clinical use of recombinant proteins face further challenges within biological systems including biological degradation and immunogenicity. To increase the accessibility of recombinant proteins, the cost and inefficiencies of protein manufacturing and distribution need to be significantly reduced. A powerful tool to aid in this endeavor is cell-free protein synthesis …
Utilizing Isothermal Titration Calorimetry For Measuring Beta-Galactosidase Activity In Liquid Dairy Products, Eliza Anne Brock
Utilizing Isothermal Titration Calorimetry For Measuring Beta-Galactosidase Activity In Liquid Dairy Products, Eliza Anne Brock
Theses and Dissertations
This research explores Isothermal Titration Calorimetry as a method for measuring beta-galactosidase activity directly and continuously in milk, sweet whey, sweet whey permeate, acid whey, and acid whey permeate. Beta-galactosidase in various concentrations was injected into each of the liquid dairy products spiked with lactose to verify if the heat rate from the enzymatic reaction could be observed. In addition, a consistent concentration of beta-galactosidase was injected into various concentrations of lactose in the products, to observe the heat rates from the enzymatic reaction. There was exothermic activity that never returned to baseline demonstrated in milk, sweet whey, and sweet …
Using Facies Analysis And Reservoir Characterization Of The Albian-Cenomanian Nanushuk Formation To Assist In Better Understanding Interactions Between Shoreface, Deltaic, And Fluvial Systems On The North Slope, Alaska, Andrea Smoot
Theses and Dissertations
The Albian-Cenomanian Nanushuk Formation located on the North Slope of Alaska is the result of fluvial, deltaic, and shoreface processes and has been the focus of recent petroleum exploration activity in the Colville Basin. The Nanushuk and underlying Torok formations together contain an estimated 8.7 billion barrels of oil and 25 trillion cubic feet of natural gas reserves within the resource-rich North Slope. The Nanushuk Formation is composed of sediment sourced from the Chukotka Peninsula to the west and deposited axially within the Colville Basin. High sedimentation rates led to rapid progradation of shoreface and deltaic systems, which effectively filled …
Identifying And Evaluating Common Subgenres In Asymmetric Virtual Reality Games, Miah Dawes
Identifying And Evaluating Common Subgenres In Asymmetric Virtual Reality Games, Miah Dawes
Theses and Dissertations
Recent years have seen a significant growth in what designers and players call asymmetric virtual reality (AVR) games. This dissertation creates a framework that defines the relevant characteristics of AVR as a genre and describes five common genres of AVR games, including David(s) and Goliath, Hide and Seek, Perspective Puzzle, Order Simulation, and Lifeline. The core features of each subgenre are expounded. These subgenres are then evaluated using design workshops to observe novice game designs use these subgenres in their game design process. An analysis of the workshops found that the AVR subgenre framework may benefit novice game designers in …
Mixture Design Response Surface Methodology Analysis Of Seven Natural Bioactive Compounds To Treat Prostate Cancer, Ian Geddes Berlin
Mixture Design Response Surface Methodology Analysis Of Seven Natural Bioactive Compounds To Treat Prostate Cancer, Ian Geddes Berlin
Theses and Dissertations
Natural bioactive compounds have drawn the interest of many researchers worldwide in their effort to find novel treatments, including prostate cancer (PC) treatment which is estimated to be 13.1% of all new cancer cases in the U.S. in 2021. Many of these bioactive compounds have been identified from treatments in traditional Chinese medicine (TCM), that often have multiple bioactive compounds present. However, in vitro studies frequently focus on the compounds in isolation, or in simple combinations of two compounds. We used mixture design response surface methodology (MDRSM) to assess changes in PC cell viability after 48 hours of treatment to …
Characterization Of Bacteriophage Targeting Bacillus Licheniformis In Milk Processes And Thermal Stability Of Bacteriophage During Htst Pasteurization, Jeremy Robert Arbon
Characterization Of Bacteriophage Targeting Bacillus Licheniformis In Milk Processes And Thermal Stability Of Bacteriophage During Htst Pasteurization, Jeremy Robert Arbon
Theses and Dissertations
An array of Bacillus licheniformis strains were isolated from a commercial powdered milk process. Bacteriophages exhibiting activity against B. licheniformis were isolated from cattle manure and effluent samples destined for a lagoon at a dairy farm. After sequencing, 8 of the 10 phages were found to be novel and genetically differentiated. Transmission electron scanning microscopy (TSEM) was performed. All bacteriophages were of the family Herelleviridae with contractile tail sheaths ranging from 80µm to 150µm and, surprisingly, survived a common fluid milk processing treatment used to inactivate vegetative cells. The survival of the phage after high temperature short time pasteurization of …
The Formation Of The Diminutive In Brazilian Portuguese, Cristina M. Newell
The Formation Of The Diminutive In Brazilian Portuguese, Cristina M. Newell
Theses and Dissertations
Although the Portuguese diminutive has been analyzed for centuries, there is a lack of descriptive experimental data regarding how native speakers form the diminutive including participants from each state in Brazil. For this study, 1,053 native speakers from each of the 26 states and the federal district of Brazil filled out an online survey, providing information about their age, gender, birth state, and current state of residence in Brazil. Participants selected the form(s) of the diminutive which they would use for 60 test words. Results indicate that the most influential factors in the formation of the diminutive are the age …
Language Maintenance In Utah: Spanish Heritage Speakers' Attitudes And Language Use, Perla Y. Escobar Rodriguez
Language Maintenance In Utah: Spanish Heritage Speakers' Attitudes And Language Use, Perla Y. Escobar Rodriguez
Theses and Dissertations
The current study quantitatively and qualitatively investigated Spanish maintenance among 45 Spanish heritage language (SHL) speakers in Utah who completed a survey about their linguistic background, their attitudes toward Spanish, their self-rated Spanish proficiency, and their current Spanish usage. Nine participants were also interviewed to expound on their linguistic experience. Previous studies on language maintenance (Alba et al., 2002; Carreira & Kagan, 2011; Lanier, 2014; Lynch, 2000; Mejías et al., 2002; Potowski, 2004; Silva-Corvalán, 1994; Zentella, 1997) have analyzed different sociolinguistics factors that relate to Spanish maintenance and usage in areas with high Hispanic populations. Nevertheless, little research has been …
Modeling The Effects Of Parameter Changes On Heating And Pressure At The Weld Interface And Joint Strength In Friction Bit Joining, Adam Hartly Wagner
Modeling The Effects Of Parameter Changes On Heating And Pressure At The Weld Interface And Joint Strength In Friction Bit Joining, Adam Hartly Wagner
Theses and Dissertations
Joining of dissimilar metals is a process that is of interest in many fields, especially the automotive industry where lightweighting of the body structure is important. However, creating strong joints between dissimilar metals can be challenging. Friction bit joining (FBJ) is a solid-state method that uses a consumable bit to create a strong joint between dissimilar metals such as aluminum and steel. The purpose of this research is to gain understanding of how adjusting FBJ parameters affects the heating and pressure at the weld interface using a modeling approach, in order to better understand the bonding process. The questions guiding …
Deep Parameter Selection For Classic Computer Vision Applications, Michael Whitney
Deep Parameter Selection For Classic Computer Vision Applications, Michael Whitney
Theses and Dissertations
A trend in computer vision today is to retire older, so-called "classic'' methods in favor of ones based on deep neural networks. This has led to tremendous improvements in many areas, but for some problems deep neural solutions may not yet exist or be of practical application. For this and other reasons, classic methods are still widely used in a variety of applications. This paper explores the possibility of using deep neural networks to improve these older methods instead of replace them. In particular, it addresses the issue of parameter selection in these algorithms by using a neural network to …
The Impact Of Inkjet Parameters And Environmental Conditions In Binder Jetting Additive Manufacturing, Trenton Miles Colton
The Impact Of Inkjet Parameters And Environmental Conditions In Binder Jetting Additive Manufacturing, Trenton Miles Colton
Theses and Dissertations
Binder jetting is an additive manufacturing process in which a part is fabricated layer-by-layer using inkjet technology to selectively dispense binder into powder layers in a designated area. The approach gives this process significant advantages over other additive manufacturing processes such as lower cost, capability to print in a wide range of materials, and little to no heat applied. Although binder jetting has many advantages and has been successful implemented in various industries its overall rate of adoption is slow compared to other processes. This is largely due to poor mechanical properties and consistency in printing which stems from a …
Minimizer Of A Free Boundary Problem, Mingyan Zhao
Minimizer Of A Free Boundary Problem, Mingyan Zhao
Theses and Dissertations
We study a free boundary problem with initial data given on three-dimensional cones. In particular, we study when the free boundary is allowed to pass through the vertex of the cone, which depends on the cone’s slope, determined by a parameter c. With a mix of analytical and computational methods, we show that the free boundary may pass through the vertex of the cone when c ≤ 0.43.
Modeling A Human Family Network, Rebecca Jo Flores
Modeling A Human Family Network, Rebecca Jo Flores
Theses and Dissertations
We propose a model that generates a family network based on real-world family network data. We use this model to study the extent to which distances to union and the number of children characterize family networks. To determine how accurate our model is we use persistent homology to identify and compare the structure of our modeled family networks to real-world family networks. To accomplish this, we introduce the notion of a network's persistence curve, which encodes the network's set of persistence intervals. Using the bottleneck distance allows us to measure the difference in the homological structure between any pair of …
A Geometric Approach To Multiple Target Tracking Using Lie Groups, Mark E. Petersen
A Geometric Approach To Multiple Target Tracking Using Lie Groups, Mark E. Petersen
Theses and Dissertations
Multiple target tracking (MTT) is the process of localizing targets in an environment using sensors that perceive the environment. MTT has many applications such as wildlife monitoring, air traffic monitoring, and surveillance. These applications motivate further research in the different challenging aspects of MTT. One of these challenges that we will focus on in this dissertation is constructing a high fidelity target model. A common approach to target modeling is to use linear models or other simplified models that do not properly describe the target's pose (position and orientation), motion, and uncertainty. These simplified models are typically used because they …
Spline-Based Contact: Algorithms And Applications, Pulama Bhattacharya
Spline-Based Contact: Algorithms And Applications, Pulama Bhattacharya
Theses and Dissertations
Contact is one of the most challenging nonlinearities to solve in solid mechanics. In traditional linear finite element analysis, the contact surface is only C^0 continuous, as a result, the normal to the contact surface is not continuous. The normal contact force is directed along the normal in the direction of the contact surface, and therefore, the contact force is discontinuous. This issue is tackled in linear finite element analysis using various surface smoothing techniques, however, a better solution is to use isogeometric analysis where the solution space is spanned by smooth spline basis functions. Unfortunately, spline-based isogeometric contact analysis …
Atypical Sensory Processing And Semantic Language In Autistic Children, Charlene L. Cooper
Atypical Sensory Processing And Semantic Language In Autistic Children, Charlene L. Cooper
Theses and Dissertations
Autistic children demonstrate a constellation of traits with varying degrees of severity in areas including language differences, restrictive and repetitive behaviors, and sensory processing differences. However, the relationship between sensory processing and these other behaviors are not well understood especially their neurobiological underpinnings. Therefore, this research examined behavioral measures of semantic language, sensory traits, and associated brain networks in 20 autistic children (ages 6-11) and 22 typically developing (TD) age matched peers. Mann-Whitney U tests revealed a strong correlation between sensory traits and general composite and semantic language in both groups of participants. Sensory seeking traits were most significantly correlated …
Figures Of Virtue: Margaret Fell And Aemilia Lanyer's Use Of Decorum As Ethical Good Judgment In The Construction Of Female Discursive Authority, Kirsten Marie Osmani
Figures Of Virtue: Margaret Fell And Aemilia Lanyer's Use Of Decorum As Ethical Good Judgment In The Construction Of Female Discursive Authority, Kirsten Marie Osmani
Theses and Dissertations
Understanding how the Renaissance rhetorical curriculum taught style as behavior makes it possible to unite the study of women writers' identities with formal criticism. Nancy L. Christiansen shows that early modern humanists built on the Isocratean tradition of teaching rhetoric as an ethical practice because they adopted and developed lists of rhetorical figures so extensive as to encompass all human discourse, thought, and behavior. For them, knowing, selecting, and applying these various forms was the ethical practice of good judgment, also called decorum. This type of decorum plays an important role in the rhetorical function of two key texts by …