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Measuring Social Connectedness During Shared Leisure Activities Using Oxytocin: A Comparison Of Sampling Urine Versus Saliva, Karen K. Melton, Camilla Hodge, Madeline L. Haron, Maria Boccia Jan 2022

Measuring Social Connectedness During Shared Leisure Activities Using Oxytocin: A Comparison Of Sampling Urine Versus Saliva, Karen K. Melton, Camilla Hodge, Madeline L. Haron, Maria Boccia

Faculty Publications

Leisure experiences are often associated with social connectedness. One measure of social connection underutilized in leisure studies is the neurohormone oxytocin. This methodological note considers issues researchers need to address when incorporating oxytocin in their study design. Noninvasive sources for sampling oxytocin include saliva and urine; however, the decision about which method to employ is not well documented. This study provides the first methodological note on collecting oxytocin in leisure studies and provides a comparison of urine vs. saliva measures for oxytocin in the context of leisure activities. Our findings indicate that urine samples are more sensitive to oxytocin change …

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Ecology Of Family Experiences: Contextualizing Family Leisure For Human Development & Family Relations, Camilla Hodge, Kelly D. Chandler, Karen K. Melton, Kelly L. Hoke, Jennifer Blodgett Jan 2022

Ecology Of Family Experiences: Contextualizing Family Leisure For Human Development & Family Relations, Camilla Hodge, Kelly D. Chandler, Karen K. Melton, Kelly L. Hoke, Jennifer Blodgett

Faculty Publications

Research on family communication in the leisure context has been limited to retrospective survey reconstructions of perceptions of communication patterns. This study examines the validity of sociometric badges for measuring family communication in real-time. Seven families (married, two-parent families with at least one child ages 4–17 years) wore sociometric badges during a 30-minute leisure activity in a lab setting. We compared mean badge estimates of family communication duration to mean coded video data from the same 30-minute sessions. Intraclass correlation coefficients indicated sociometric badges are not as reliable as video-coded estimates of speech; however, among parents, non-significant mean comparisons partially …

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Experience Design In Leisure And Recreation Curriculum, Madie Neeley, Sydney Burgess, Mat D. Duerden, Neil Lundberg Jan 2022

Experience Design In Leisure And Recreation Curriculum, Madie Neeley, Sydney Burgess, Mat D. Duerden, Neil Lundberg

Faculty Publications

Experience design is a term that has risen to the forefront in a variety of professional fields and has relevance for the field of park and recreation. Park and recreation professionals are primarily focused on providing experiences and thus could naturally consider themselves experienced designers. Surprisingly, experience design is not a topic often discussed within park and recreation publications or curriculum. This absence is at least in part attributable to the fact that experience design is an emerging field that has grown independently out of multiple disciplines. Consequently, the fields of park and recreation and experience design overlap in a …

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Regional Patterns In Prevelar Raising, Joseph A. Stanley Jan 2022

Regional Patterns In Prevelar Raising, Joseph A. Stanley

Faculty Publications

Prevelar raising is the raising of trap and dress vowels before voiced velars. While bag and beg raising have been described in Canada, the Upper Midwest, and the Pacific Northwest, an in-depth investigation of their distribution across North America is lacking, especially for beg. Using an online survey distributed to over 5,000 participants via Reddit (which skews toward younger, White males) and ordinary kriging for spatial interpolation, this study finds that prevelar raising is more widespread than previously reported: bag raising is found in much of the North and the Upper Midwest, and beg raising is far more variable and …

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Students Coming Prepared To Class? A Review Of The Literature With A Call To Research, Melissa P. Larson, Jace Linnell Jan 2022

Students Coming Prepared To Class? A Review Of The Literature With A Call To Research, Melissa P. Larson, Jace Linnell

Faculty Publications

In this literature review, we show that little attention has been given to pre-class learning in a flipped classroom setting. To support learning, a flipped classroom shifts the learning of basic content from a classroom setting to a pre-class setting, thereby freeing up time within class for more active learning activities. Active learning activities support student-centered learning as peers collaborate with deep application of pre-class learning concepts. Thus, higher-order skills of critical thinking and lifelong learning, which are valued in the accounting education curriculum and profession, can be developed through a flipped classroom pedagogy. However, if pre-class learning is not …

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Increase Student Engagement In Online Writing Environments, Jonathan Balzotti, Jason K. Mcdonald, Kevin Haws, Amy Allen Rogers, Matthew J. Baker Jan 2022

Increase Student Engagement In Online Writing Environments, Jonathan Balzotti, Jason K. Mcdonald, Kevin Haws, Amy Allen Rogers, Matthew J. Baker

Faculty Publications

This case study explores a type of educational simulation, an alternative reality game we call a playable case study (PCS), and how its use influenced student engagement in an online writing classroom. The goal of the simulation was to help students create professional communication artifacts and experience real-world professional communication situations. This article reports the effectiveness of the playable case study as a tool specifically for online writing instruction (OWI). The context of our research was a PCS called Microcore. Acting as interns for a company, students are asked to investigate a serious problem that occurs and present a solution …

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Incremental Improvements: Examining Instructional Changes And Rationales Of K-12 Online Teachers Using The Picrat And 4e Frameworks, Jered Borup, Rocio Quiroga Velasquez, Charles R. Graham, Leanna Archambault, Royce Kimmons Jan 2022

Incremental Improvements: Examining Instructional Changes And Rationales Of K-12 Online Teachers Using The Picrat And 4e Frameworks, Jered Borup, Rocio Quiroga Velasquez, Charles R. Graham, Leanna Archambault, Royce Kimmons

Faculty Publications

Teacher preparation programs have been slow to prepare teachers for the online environment, leaving many online teachers needing to learn on the job. However, little research has examined how online teachers grow as educators. One way to better understand this growth is to examine the changes online teachers make in their instruction and their rationales for making them. In this qualitative case study, we surveyed online teachers three times during an academic year regarding their instructional changes. Participants described these changes and categorized them on a modified PICRAT matrix to indicate if the changes made student learning more passive, interactive, …

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Review—Concentration Measurements In Molten Chloride Salts Using Electrochemical Methods, Tyler Williams, Rankin Shum, Devin Rappleye Dec 2021

Review—Concentration Measurements In Molten Chloride Salts Using Electrochemical Methods, Tyler Williams, Rankin Shum, Devin Rappleye

Faculty Publications

The electrochemical measurement of concentration in molten chloride salts is a valuable tool for the control of existing and potential industrial processes, recycling of precious materials and energy production. The electrochemical techniques commonly used to measure concentration and each techniques’ associated theory are discussed. Practices which improve measurement accuracy and precision are set forth. Exceptionally accurate and precise measurements published in the literature are evaluated based on their performance in specified concentration ranges. The strengths and weaknesses of the most accurate measurements are briefly explored. Chronopotentiometry (CP) and square wave voltammetry (SWV) are accurate and precise with low concentration measurements. …

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Investigation Of Lithium-Ion Battery Electrode Fabrication Through A Predictive Particle-Scale Model Validated By Experiments, Mojdeh Nikpour Dec 2021

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 …

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Temperature Relaxation And Magnetically Suppressed Expansion In Strongly Coupled Ultracold Neutral Plasmas, Robert Tucker Sprenkle Dec 2021

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 …

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Laser Forming Of Compliant Mechanisms And Flat-Foldable Furniture, Daniel Calvin Ames Dec 2021

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 …

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Development And Characterization Of An Underwater Acoustics Laboratory Via In Situ Impedance Boundary Measurements, Cameron Taylor Vongsawad Dec 2021

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 …

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Bayesian, Frequentist, And Information Geometry Approaches To Parametric Uncertainty Quantification Of Classical Empirical Interatomic Potentials, Yonatan Kurniawan Dec 2021

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, …

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An Analysis Of Two Photometric Redshift Methods And Their Uses For Finding Void Galaxies, Rochelle J. Steele Dec 2021

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 …

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Pentagonal Extensions Of The Rationals Ramified At A Single Prime, Pablo Miguel Rodriguez Dec 2021

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.

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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 Dec 2021

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 …

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Deep Parameter Selection For Classic Computer Vision Applications, Michael Whitney Dec 2021

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 …

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A Geometric Approach To Multiple Target Tracking Using Lie Groups, Mark E. Petersen Dec 2021

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 …

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Modeling A Human Family Network, Rebecca Jo Flores Dec 2021

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 …

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Minimizer Of A Free Boundary Problem, Mingyan Zhao Dec 2021

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.

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Spline-Based Contact: Algorithms And Applications, Pulama Bhattacharya Dec 2021

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 …

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Electrocatalytic Oxidation Of Carbohydrates Via Surface Immobilized Viologen, Dallin D.V. Scott Dec 2021

Electrocatalytic Oxidation Of Carbohydrates Via Surface Immobilized Viologen, Dallin D.V. Scott

Theses and Dissertations

Earths most abundant biomolecules, carbohydrates, offer tremendous potential forelectricity production. Carbohydrate fuel cells are electrical fuel cells that can harvest the stored electrons in carbohydrates and offer a cheap and efficient method that could help solve growing energy demands, while providing a renewable green energy source. Viologen-mediated carbohydrate fuel cells have demonstrated the ability to accelerate carbohydrate oxidation while decreasing partial or incomplete oxidation products reducing the electricity production. Subsequent studies suggested polymeric viologen compounds could improve the efficiency by increasing the local concentration of viologen. This thesis presents the utility of surface-immobilized viologen mediators for the oxidation of simple …

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Working Knowledge: An Analysis Of Innovation In K-6 Charter Schools, Jennifer Lynn Price Dec 2021

Working Knowledge: An Analysis Of Innovation In K-6 Charter Schools, Jennifer Lynn Price

Theses and Dissertations

This three-article dissertation explores educational innovation in charter schools. A common frame of reference for each article is the consideration of the influence of Dr. Benjamin Bloom's 2 sigma problem--the observation that one-on-one tutoring, though often cost prohibitively expensive, produces outcomes two standard deviations higher than traditional group-directed instruction. The first article is a literature review of the types of charter school innovations most commonly found in the literature and the type of effect those innovations can have on student learning outcomes. The research suggests that three of the top studied new innovations from charters are technology-based virtual schools, specific …

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Galectin-1: Development Of A Novel Protein Therapy For Lgmd2b, Mary Lorena Vallecillo Munguia Dec 2021

Galectin-1: Development Of A Novel Protein Therapy For Lgmd2b, Mary Lorena Vallecillo Munguia

Theses and Dissertations

Muscular dystrophies are a heterogeneous group of genetic diseases that involve mutations in genes leading to progressive muscular weakness. Limb-Girdle Muscular Dystrophy 2B (LGMD2B) is a subset of muscular dystrophy caused by mutations in the DYSF gene, which encodes for dysferlin protein and has an incidence of 1/100,000-1/200,000 people, or 1/300 people of Libyan Jewish descent. Since there is no effective treatment that can cure or reverse effects of LGMD2B once diagnosed, our goal is to investigate and develop a protein therapy that mitigates effects of this disease in patients. Galectin-1 (Gal-1) is a small, soluble 14.5 kDa protein with …

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Microwave-Promoted Iminyl Radical Fragmentations And The Total Synthesis Of Yaku'amide A And Its Simplified Analogues, Concordia Lo Dec 2021

Microwave-Promoted Iminyl Radical Fragmentations And The Total Synthesis Of Yaku'amide A And Its Simplified Analogues, Concordia Lo

Theses and Dissertations

The first project in this dissertation describes the use of microwave-promoted iminyl radical fragmentations to form functionalized nitriles. Nitrogen-centered radical chemistry is a useful tool to construct valuable C-N bonds commonly found in pharmaceuticals and biologically active molecules. Classically, these reactions require the use of toxic initiators and propagators. Iminyl radical chemistry has been gaining momentum as a means of avoiding these harsh conditions. This project utilizes the fragmentation of cyclic iminyl radicals via irradiation of O-phenyl oxime ethers to produce a synthetically useful nitrile tethered to an alkyl radical in the absence of metal catalysts and redox chemistry. The …

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Quantitative Stem: A Method For Measuring Temperature And Thickness Effects On Thermal Diffuse Scattering Using Stem/Eels, And For Testing Electron Scattering Models, Paul S. Minson Dec 2021

Quantitative Stem: A Method For Measuring Temperature And Thickness Effects On Thermal Diffuse Scattering Using Stem/Eels, And For Testing Electron Scattering Models, Paul S. Minson

Theses and Dissertations

In the last two decades, advances in the dark field detectors and microscopes of scanning transmission electron microscopy (STEM) have inspired a resurgence of interest in quantitative STEM analysis. One promising avenue is the use of STEM as a nanothermometric probe. In this application, thermal diffuse scattering, captured by a CCD camera or an annular dark field detector, acts as an indirect measurement of the specimen temperature. One challenge with taking such a measurement is achieving adequate sensitivity to quantify a change in scattered electron signal on the order of 1% or less of the full electron beam. Another difficulty …

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Field Investigations And Numerical Modeling Of Earthquake And Tsunami Risk At Four Vulnerable Sites In Indonesia, Claire E. Ashcraft Dec 2021

Field Investigations And Numerical Modeling Of Earthquake And Tsunami Risk At Four Vulnerable Sites In Indonesia, Claire E. Ashcraft

Theses and Dissertations

Maps and models of seismic and tsunami risk are constructed from a variety of measurements taken in Indonesia, which have the potential to reduce loss of life and infrastructure. The first study uses the multichannel analysis of surface waves (MASW) method to calculate the time-averaged shear wave velocity to 30 m depth (Vs30). These measurements were taken at 58 sites in the city of Pacitan, Java and on the islands of Lombok, Ambon, and the Banda Islands. Vs30 calculations are compared with local geologic maps to extrapolate site class for locations not measured directly. Site class maps are then compared …

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Non-Linear Optical Characterization Of Stressed Materials, Kaylee N. Rellaford Dec 2021

Non-Linear Optical Characterization Of Stressed Materials, Kaylee N. Rellaford

Theses and Dissertations

Interactions between materials, their surfaces, and applied stresses are involved in every man-made construction in the world. Therefore, finding ways to interact without altering inherent properties of materials is of great interest. Surface spectroscopies, including second harmonic generation (SHG) and sum frequency generation (SFG), are inherently noninvasive testing methods. Both SHG and SFG are well-developed techniques that can be used in various applications including the characterization of material state. Both of these techniques allow for a noninvasive analysis of various materials, such as metals and polymers. We have used SHG as a method to characterize the change in signal strength …

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Totally P-Adic Numbers Of Degree 4, Melissa Janet Ault Dec 2021

Totally P-Adic Numbers Of Degree 4, Melissa Janet Ault

Theses and Dissertations

In this thesis, we extend results of Emerald Stacy to compute an upper bound on the minimal height of a totally p-adic algebraic integer of degree 4 independent of p. We also compute actual values of the minimal height of a totally p-adic algebraic integer of degree 4 for small primes p.

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Development And Evaluation Of An Improved Microbial Inactivation Model For Analyzing Continuous Flow Uv-Led Air Treatment Systems, Cole Holtom Thatcher Dec 2021

Development And Evaluation Of An Improved Microbial Inactivation Model For Analyzing Continuous Flow Uv-Led Air Treatment Systems, Cole Holtom Thatcher

Theses and Dissertations

This thesis discusses the development of an improved microbial inactivation model for analyzing continuous flow UV-LED air treatment systems and use of the model to evaluate the impact of several treatment system design parameters on inactivation. Model development includes three submodels: a radiation submodel, a fluid flow submodel, and an inactivation kinetics submodel. Radiation modeling defines the UV irradiance throughout the system. Fluid flow modeling provides the residence times that microbes spend exposed to the UV irradiation while passing through the system. Inactivation modeling combines irradiance and residence times with inactivation kinetics to calculate species-specific inactivation in a treatment system. …

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