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Incorporating Stability In Deployable Origami-Based Engineering Applications, David Wayne Andrews Jul 2020

Incorporating Stability In Deployable Origami-Based Engineering Applications, David Wayne Andrews

Theses and Dissertations

For origami-based designs to be functional, they need to be stable. Typically, stability is achieved through the introduction of exterior supports or members. This work focuses on incorporating stability into deployable origami-based engineering applications, including the development of deployable stiffeners or hard stops and generating concepts for stable origami-based systems in specific applications. Two types of deployable stiffeners are developed. Models for transcrease hard stops are presented, which can be directly implemented into origami-patterns to block motion at a specified angle. Thickness Utilizing Deployable Hard Stops (ThUDS), adapted from the transcrease hard stop models, can be implemented into thick materials …

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Tracking Joint Angles During Whole-Arm Movements Using Electromagnetic Sensors, Ryan Clark, Taylor Dickinson, Johnfredy Loaiza, Daniel W. Geiger, Steven Knight Charles Jul 2020

Tracking Joint Angles During Whole-Arm Movements Using Electromagnetic Sensors, Ryan Clark, Taylor Dickinson, Johnfredy Loaiza, Daniel W. Geiger, Steven Knight Charles

Faculty Publications

Electromagnetic (EM) motion tracking systems are suitable for many research and clinical applications, including in-vivo measurements of whole-arm movements. Unfortunately, the methodology for in vivo measurements of whole-arm movements using EM sensors is not well described in the literature, making it difficult to perform new measurements and all but impossible to make meaningful comparisons between studies. The recommendations of the International Society of Biomechanics (ISB) have provided a great service, but by necessity they do not provide clear guidance or standardization on all required steps. The goal of this paper was to provide a comprehensive methodology for using EM sensors …

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Groundwater Level Mapping Tool: An Open Source Web Application For Assessing Groundwater Sustainability, Steven W. Evans, Norman L. Jones, Gustavious P. Williams, Daniel P. Ames, E. James Nelson Jul 2020

Groundwater Level Mapping Tool: An Open Source Web Application For Assessing Groundwater Sustainability, Steven W. Evans, Norman L. Jones, Gustavious P. Williams, Daniel P. Ames, E. James Nelson

Faculty Publications

Decision makers need an accurate understanding of aquifer storage trends to effectively manage groundwater resources. Groundwater is difficult to monitor and quantify since the data collected from monitoring wells are often available only at irregular and infrequent intervals. We present an open-source web application (app) to visualize groundwater data over time and automatically calculate changes in aquifer storage volume to help managers assess aquifer sustainability. This app uses a novel multi-linear regression (MLR) algorithm to impute missing data for infrequently sampled wells, using correlated data from other wells in the same aquifer. The app uses this MLR-imputed data to spatially …

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High Order Numerical Methods For Problems In Wave Scattering, Dane Scott Grundvig Jun 2020

High Order Numerical Methods For Problems In Wave Scattering, Dane Scott Grundvig

Theses and Dissertations

Arbitrary high order numerical methods for time-harmonic acoustic scattering problems originally defined on unbounded domains are constructed. This is done by coupling recently developed high order local absorbing boundary conditions (ABCs) with finite difference methods for the Helmholtz equation. These ABCs are based on exact representations of the outgoing waves by means of farfield expansions. The finite difference methods, which are constructed from a deferred-correction (DC) technique, approximate the Helmholtz equation and the ABCs to any desired order. As a result, high order numerical methods with an overall order of convergence equal to the order of the DC schemes are …

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A Night To Remember: An Exploration Of High School Dance Culture In Utah, Emmie Tolman Jun 2020

A Night To Remember: An Exploration Of High School Dance Culture In Utah, Emmie Tolman

Final Projects

This collection explores the customs and practices surrounding high school dances throughout Utah. This paper explores how school dances appear to build friendships and memories rather than developing romances.

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Evaluating And Improving The Seu Reliability Of Artificial Neural Networks Implemented In Sram-Based Fpgas With Tmr, Brittany Michelle Wilson Jun 2020

Evaluating And Improving The Seu Reliability Of Artificial Neural Networks Implemented In Sram-Based Fpgas With Tmr, Brittany Michelle Wilson

Theses and Dissertations

Artificial neural networks (ANNs) are used in many types of computing applications. Traditionally, ANNs have been implemented in software, executing on CPUs and even GPUs, which capitalize on the parallelizable nature of ANNs. More recently, FPGAs have become a target platform for ANN implementations due to their relatively low cost, low power, and flexibility. Some safety-critical applications could benefit from ANNs, but these applications require a certain level of reliability. SRAM-based FPGAs are sensitive to single-event upsets (SEUs), which can lead to faults and errors in execution. However there are techniques that can mask such SEUs and thereby improve the …

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A Test Of The Whytry Program On Youth Resilience, Travis Guy Price Jun 2020

A Test Of The Whytry Program On Youth Resilience, Travis Guy Price

Theses and Dissertations

The purpose of this study was to investigate the effectiveness of the WhyTry program in enhancing adolescent resilience. Ninety-four adolescents in grades seven–nine had been screened for Tier two intervention at the local junior high. The school assigned these students to either a WhyTry treatment group or an alternative treatment group. The students were all from economically disadvantaged situations and were predominantly Hispanic. The treatment group participated in the WhyTry program, led by a trained facilitator at the school. Students in the treatment and comparison groups completed a pre-test and post-test using the Social Emotional Assets and Resilience Scales (SEARS). …

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Information Geometry And Model Reduction In Oscillatory And Networked Systems, Benjamin Lane Francis Jun 2020

Information Geometry And Model Reduction In Oscillatory And Networked Systems, Benjamin Lane Francis

Theses and Dissertations

In this dissertation, I consider the problem of model reduction in both oscillatory and networked systems. Previously, the Manifold Boundary Approximation Method (MBAM) has been demonstrated as a data-driven tool for reducing the parametric complexity of so-called sloppy models. To be effective, MBAM requires the model manifold to have low curvature. I show that oscillatory models are characterized by model manifolds with high curvature in one or more directions. I propose methods for transforming the model manifolds of these models into ones with low curvature and demonstrate on a couple of test systems. I demonstrate MBAM as a tool for …

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Lcm Permeability Characterization Over Mold Curvature, Benjamin Grant Betteridge Jun 2020

Lcm Permeability Characterization Over Mold Curvature, Benjamin Grant Betteridge

Theses and Dissertations

Composite flow simulation tools for LCM processing can be expensive and time-consuming but necessary to design a mold system with proper placement of resin inlets and vacuum outlets. Composites manufacturing engineers would benefit from data regarding the impact of mold curvature radius on resin flow. This could help determine whether or not a particular part and mold would require expensive simulation software designed to handle complex flow paths through curved fabric architectures exhibiting variable permeability over the curvature, or if simple flow modeling would provide accurate enough simulations for sound tooling setup decision making. Four molds, with double curvature having …

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General Education Teachers' Self-Reported Response To Overt Student Problem Behavior In The Classroom, Ingrid Lewis Shurtleff Jun 2020

General Education Teachers' Self-Reported Response To Overt Student Problem Behavior In The Classroom, Ingrid Lewis Shurtleff

Theses and Dissertations

The need for teachers to respond effectively to student problem behaviors is vital for positive student outcomes. This study examined how general education teachers respond to different problem behaviors, what variables possibly predict those responses, and if dealing with problem behaviors plays a possible role in teacher attrition. Results were reported using descriptive and statistical analyses. Three-hundred sixty-three elementary and secondary teachers in five school districts were invited to participate in a survey. Findings indicate that teachers primarily use individually directed responses to problem behaviors and the responses had little differentiation according to intensity of behavior. The data revealed some …

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Multi-Objective Intent-Based Path Planning For Robots For Static And Dynamic Environments, Meher Talat Shaikh Jun 2020

Multi-Objective Intent-Based Path Planning For Robots For Static And Dynamic Environments, Meher Talat Shaikh

Theses and Dissertations

This dissertation models human intent for a robot navigation task, managed by a human and undertaken by a robot in a dynamic, multi-objective environment. Intent is expressed by a human through a user interface and then translated into a robot trajectory that satisfies a set of human-specified objectives and constraints. For a goal-based robot navigation task in a dynamic environment, intent includes expectations about a path in terms of objectives and constraints to be met. If the planned path drifts from the human's intent as the environment changes, a new path needs to be planned. The intent framework has four …

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Observing The Impact Of An Engineering-Based Unit Of Instruction On 6th Grade Students' Attitudes Towards Engineering As Theyengage In Building Electric Bikes, Gregg Allred Olsen Jun 2020

Observing The Impact Of An Engineering-Based Unit Of Instruction On 6th Grade Students' Attitudes Towards Engineering As Theyengage In Building Electric Bikes, Gregg Allred Olsen

Theses and Dissertations

In the past few decades, science, technology, engineering, and math (STEM) education has become a driving force for innovators throughout the world (Atkinson & Mayo, 2010; Bybee, 2010). STEM education has also become an economic factor in developing countries (Kennedy & Odell, 2014). Currently, many countries are struggling with how to effectively promote STEM education. The United States (U.S.) provides an interesting case study. Despite being one of the global economic leaders, it is behind in STEM education compared to other nations (Atkinson & Mayo, 2010; Dugger, 2010). STEM education helps to build world leaders including marketable and knowledgeable employees …

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Pedagogical Approaches And Instructional Content That Predict Increased Acceptance Of Biological Evolution In University Students, Clinton Thomas Laidlaw Jun 2020

Pedagogical Approaches And Instructional Content That Predict Increased Acceptance Of Biological Evolution In University Students, Clinton Thomas Laidlaw

Theses and Dissertations

Evolution is the central organizing theory of biology. Without evolutionary theory, biology becomes a somewhat tangential assemblage of facts about living organisms, which is precisely how it is viewed by many students. Many teachers teach evolution in a limited capacity or avoid it entirely due to fear of opposition, lack of confidence in their own understanding, or lack of acceptance of the theory themselves. When evolution is not taught, or is not accepted, it cannot be utilized to make sense of the field, and is quickly forgotten by students. While some studies have shown a correlation between instruction about evolution …

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A Systems-Level Approach To The Design, Evaluation, And Optimization Of Electrified Transportation Networks Using Agent-Based Modeling, Landon Clark Willey Jun 2020

A Systems-Level Approach To The Design, Evaluation, And Optimization Of Electrified Transportation Networks Using Agent-Based Modeling, Landon Clark Willey

Theses and Dissertations

Rising concerns related to the effects of traffic congestion have led to the search for alternative transportation solutions. Advances in battery technology have resulted in an increase of electric vehicles (EVs), which serve to reduce the impact of many of the negative consequences of congestion, including pollution and the cost of wasted fuel. Furthermore, the energy-efficiency and quiet operation of electric motors have made feasible concepts such as Urban Air Mobility (UAM), in which electric aircraft transport passengers in dense urban areas prone to severe traffic slowdowns. Electrified transportation may be the solution needed to combat urban gridlock, but many …

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Mathematical Identities Of Students With Mathematics Learning Dis/Abilities, Emma Lynn Holdaway Jun 2020

Mathematical Identities Of Students With Mathematics Learning Dis/Abilities, Emma Lynn Holdaway

Theses and Dissertations

The majority of research on the mathematics teaching and learning of students with mathematics learning dis/abilities is not performed in the field of mathematics education, but in the field of special education. Due to this theoretical divide, students with mathematics learning dis/abilities are far more likely to be in classes that emphasize memorization, direct instruction, and the explicit teaching of rules and procedures. Additionally, students with mathematics learning dis/abilities are often seen as "unable" to succeed in school mathematics and are characterized by their academic difficulties and deficits. The negative assumptions, beliefs, and expectations resulting from ableistic practices in the …

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Ninth-Grade Students' Motivation For Reading And Course Choice, Mckenna Lyn Simmons Jun 2020

Ninth-Grade Students' Motivation For Reading And Course Choice, Mckenna Lyn Simmons

Theses and Dissertations

The purpose of this explanatory mixed methods study was to better understand how 9th grade honors and general education language arts students valued reading, and to discover if there were any connections between the types of reading values, expectancies for success, and the student’s ultimate language arts course selection. This study was grounded in the expectancy-value theory and considered all 4 task values including utility, attainment, intrinsic, cost, and the expectancies (e.g., past experiences and reader identity) of the participants as well. First, a survey was administered to 9th graders (N = 118) enrolled in either a general language arts …

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Imath - Using Video Modeling Via Ipads To Teach Mathematics Skills To Struggling Students, Melissa Steinberg Jun 2020

Imath - Using Video Modeling Via Ipads To Teach Mathematics Skills To Struggling Students, Melissa Steinberg

Theses and Dissertations

There is a growing body of research that suggests that video-based interventions, such as video modeling and video prompting, are effective tools for teaching academic skills to students with disabilities. This study used a single subject, multiple-baseline-across-subjects design to evaluate whether a video-prompting intervention could effectively assist second grade students who had been identified by their teachers as "struggling"in mathematics to better solve multiplication story problems. Five second grade students (one female and four males) ages 7 to 8 viewed the intervention videos on an iPad that modeled how to solve multiplication word problems. To evaluate the effectiveness of the …

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If You Had Thirty Seconds, Sophie Wartena, David Wartena Jun 2020

If You Had Thirty Seconds, Sophie Wartena, David Wartena

Final Projects

This paper looks at personal identity through lens of material folklore.

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Using Group Affinity To Predict Community Formation In Social Networks, Joseph Leung Jun 2020

Using Group Affinity To Predict Community Formation In Social Networks, Joseph Leung

Undergraduate Honors Theses

A well-studied topic in network theory is detecting the communities found in real-world networks. Community detection is a technique to better understand the way in which small dense substructures appear in these networks. Such substructures can often tell important information about groups that form in such systems. A prominent feature of many networks is that they evolve over time, forming and dissolving new edges between different nodes that appear. In this thesis, we consider how we can use the community structure of a network at a certain point in time to predict the state of a network’s communities at some …

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Mystic Identifications: Reading Kenneth Burke And “Non-Identification” Through Asian American Rhetoric, Nathan D. Wood Jun 2020

Mystic Identifications: Reading Kenneth Burke And “Non-Identification” Through Asian American Rhetoric, Nathan D. Wood

Theses and Dissertations

Krista Ratcliffe’s term “non-identification” offers a version of identification that assumes identity is not always identifiable. As an attitude that fosters cross-cultural listening, non-identification asks us to listen to others from a place of “neutrality,” with “hesitancy,” “humility,” and “pause” in order to consider identity’s fluid nature (73). This thesis first argues that this term might also describe speaking strategies premised on non-identifiability. As I’ll show, an inventive non-identification would articulate some rhetorical strategies that neither “identification” nor “disidentification” currently articulate. However, rhetorical scholars need more theoretical and practical guidance for what this kind of speech looks like. So, this …

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Ambiguous Student Contributions And Teacher Responses To Clarifiable Ambiguity In Secondary Mathematics Classrooms, Alicia Marie Heninger Jun 2020

Ambiguous Student Contributions And Teacher Responses To Clarifiable Ambiguity In Secondary Mathematics Classrooms, Alicia Marie Heninger

Theses and Dissertations

Different types of ambiguous student contributions occur in mathematics classrooms. In this study I identified (1) different types of ambiguous student contributions and (2) the different ways teachers respond to one particular kind of ambiguous contribution, clarifiable ambiguity. Note that clarifiable ambiguity is ambiguity that stems from a student who uses an unclear referent in their contribution and can be clarified in the moment by the particular student. Literature has focused only on ambiguity that has the potential to further the development of mathematical concepts and has only theorized about teacher responses to this specific type of ambiguity. This study …

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Microfabricated Fluidic Devices For Biological Assays And Bioelectronics, Anna V. Bickham Jun 2020

Microfabricated Fluidic Devices For Biological Assays And Bioelectronics, Anna V. Bickham

Theses and Dissertations

Microfluidics miniaturizes many benchtop processes and provides advantages of low cost, reduced reagent usage, process integration, and faster analyses. Microfluidic devices have been fabricated from a wide variety of materials and methods for many applications. This dissertation describes four such examples, each employing different features and fabrication methods or materials in order to achieve their respective goals. In the first example of microfluidic applications in this dissertation, thermoplastics are hot embossed to form t-shaped channels for microchip electrophoresis. These devices are used to separate six preterm birth (PTB) biomarkers and establish a limit of detection for each. The next chapter …

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Divisors Of Modular Parameterizations Of Elliptic Curves, Jonathan Reid Hales Jun 2020

Divisors Of Modular Parameterizations Of Elliptic Curves, Jonathan Reid Hales

Theses and Dissertations

The modularity theorem implies that for every elliptic curve E /Q there exist rational maps from the modular curve X_0(N) to E, where N is the conductor of E. These maps may be expressed in terms of pairs of modular functions X(z) and Y(z) that satisfy the Weierstrass equation for E as well as a certain differential equation. Using these two relations, a recursive algorithm can be constructed to calculate the q - expansions of these parameterizations at any cusp. These functions are algebraic over Q(j(z)) and satisfy modular polynomials where each of the coefficient functions are rational functions in …

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Towards Cooperating In Repeated Interactions Without Repeating Structure, Huy Pham Jun 2020

Towards Cooperating In Repeated Interactions Without Repeating Structure, Huy Pham

Theses and Dissertations

A big challenge in artificial intelligence (AI) is creating autonomous agents that can interact well with other agents over extended periods of time. Most previously developed algorithms have been designed in the context of Repeated Games, environments in which the agents interact in the same scenario repeatedly. However, in most real-world interactions, relationships between people and autonomous agents consist of sequences of distinct encounters with different incentives and payoff structures. Therefore, in this thesis, we consider Interaction Games, which model interactions in which the scenario changes from encounter to encounter, often in ways that are unanticipated by the players. For …

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Student Use Of Mathematical Content Knowledge During Proof Production, Chelsey Lynn Van De Merwe Jun 2020

Student Use Of Mathematical Content Knowledge During Proof Production, Chelsey Lynn Van De Merwe

Theses and Dissertations

Proof is an important component of advanced mathematical activity. Nevertheless, undergraduates struggle to write valid proofs. Research identifies many of the struggles students experience with the logical nature and structure of proofs. Little research examines the role mathematical content knowledge plays in proof production. This study begins to fill this gap in the research by analyzing what role mathematical content knowledge plays in the success of a proof and how undergraduates use mathematical content knowledge during proofs. Four undergraduates participated in a series of task-based interviews wherein they completed several proofs. The interviews were analyzed to determine how the students …

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Computational Investigation Of The Effects Of Rotor-On-Rotor Interactions On Thrust And Noise, Austin R. Schenk Jun 2020

Computational Investigation Of The Effects Of Rotor-On-Rotor Interactions On Thrust And Noise, Austin R. Schenk

Theses and Dissertations

Recent advancements in electric propulsion systems have made electric vertical takeoff and landing aircraft a reality, and one that is seen as a partial solution to the growing issue of urban traffic congestion. Designing an aircraft with multiple smaller motors and rotors spread across the wings–referred to as distributed electric propulsion (DEP)–has shown great potential in help- ing improve electric aircraft performance by offering increased propulsive efficiency, augmented lift, and structural load distribution. For these reasons, DEP is one configuration that is currently being implemented into multiple prototype designs (e.g. NASA’s Maxwell X-57, Airbus Vahana, Opener BlackFly, and Joby S2). …

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Optimized 3d Reconstruction For Infrastructure Inspection With Automated Structure From Motion And Machine Learning Methods, Samuel Arce Munoz Jun 2020

Optimized 3d Reconstruction For Infrastructure Inspection With Automated Structure From Motion And Machine Learning Methods, Samuel Arce Munoz

Theses and Dissertations

Infrastructure monitoring is being transformed by the advancements on remote sensing, unmanned vehicles and information technology. The wide interaction among these fields and the availability of reliable commercial technology are helping pioneer intelligent inspection methods based on digital 3D models. Commercially available Unmanned Aerial Vehicles (UAVs) have been used to create 3D photogrammetric models of industrial equipment. However, the level of automation of these missions remains low. Limited flight time, wireless transfer of large files and the lack of algorithms to guide a UAV through unknown environments are some of the factors that constraint fully automated UAV inspections. This work …

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Do Shape And Volume Of Subcortical Neural Structures Involved In Reward Processing Correlate With Body Mass And Food Reward In Adolescent Females?, Kelsey K. Zaugg Jun 2020

Do Shape And Volume Of Subcortical Neural Structures Involved In Reward Processing Correlate With Body Mass And Food Reward In Adolescent Females?, Kelsey K. Zaugg

Theses and Dissertations

Background: The prevalence of adolescent obesity has increased drastically in the last few decades, spurring research examining causes and consequences of this chronic health condition. Neuroimaging techniques are being used to determine possible neural correlates of obesity that could help inform research in this field. However, the research among adolescents is not as abundant and findings so far are contradictory. This study sought to examine the association of the shape and volume of subcortical brain structures involved in reward processing with weight status in adolescent females. Additionally, this study sought to determine if the shape and volume of these structures …

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Understanding The Relationships Between Ion Transport, Electrode Heterogeneity, And Li-Ion Cell Degradation Through Modeling And Experiment, Fezzeh Pouraghajansarhamami Jun 2020

Understanding The Relationships Between Ion Transport, Electrode Heterogeneity, And Li-Ion Cell Degradation Through Modeling And Experiment, Fezzeh Pouraghajansarhamami

Theses and Dissertations

Electrode microstructure directly affects ion and electron transport and, in turn, has a strong correlation to battery performance. Understanding the separate yet complementary effects of ionic and electronic transport in cell behavior is a challenge. This work provides through a combination of experiments and modeling a better understanding of the relationship between three aspects of the cell: ion transport within the electrode, electrode uniformity, and cell degradation. The first part of this work compares two experimental methods that determine ion transport in terms of tortuosity, a dimensionless geometric factor. The polarization-interrupt and blocking-electrolyte methods measure effective diffusivity and conductivity, respectively. …

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Characterization Of Slow Pyrolysis Behavior Of Live And Dead Vegetation, Elham Amini Jun 2020

Characterization Of Slow Pyrolysis Behavior Of Live And Dead Vegetation, Elham Amini

Theses and Dissertations

Prescribed (i.e., controlled) burning is a common practice used in many vegetation types in the world to accomplish a wide range of land management objectives including wildfire risk reduction, wildlife habitat improvement, forest regeneration, and land clearing. To properly apply controlled fire and reduce unwanted fire behavior, an improved understanding of fundamental processes related to combustion of live and dead vegetation is needed. Since the combustion process starts with pyrolysis, there is a need for more data and better models of pyrolysis of live and dead fuels. In this study, slow pyrolysis experiments were carried out in a pyrolyzer apparatus …

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