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Thermal Atomization Of Impinging Drops On Superheated Superhydrophobic Surfaces, Eric Lee May 2023

Thermal Atomization Of Impinging Drops On Superheated Superhydrophobic Surfaces, Eric Lee

Theses and Dissertations

Drop impact on a surface has an effect on nearly every industry and this impact may have adverse effects if not controlled. Superhydrophobic (SH) surfaces have been created with the extreme ability to repel water. These surfaces exist in nature but may also be fabricated using modern techniques. This thesis explores heat transfer from these SH surfaces to drops impacting them. This thesis is devoted to increasing the breadth of knowledge of thermal atomization during drop impingement on superheated SH surfaces. When a water drop impinges vertically on a horizontal superheated surface, intense atomization can occur. The atomization is caused …

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Caveat Emptor: Scan Quality Of Elsevier’S Digital Backfile Pdf Collection, Gregory M. Nelson, Paul Kj Robbins, Dennis L. Eggett Apr 2023

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

Faculty Publications

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

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Shannon V Nelson 2023 Dissertation Supplementary Data, Shannon Nelson, Neil C. Hansen, Matthew D. Madsen, Val Jo Anderson, Dennis L. Eggett, Bryan G. Hopkins Apr 2023

Shannon V Nelson 2023 Dissertation Supplementary Data, Shannon Nelson, Neil C. Hansen, Matthew D. Madsen, Val Jo Anderson, Dennis L. Eggett, Bryan G. Hopkins

ScholarsArchive Data

This data set includes soil matric potential and temperature data for a field trial at the Utah Test and Training Range (UTTR) evaluating the use of banded superabsorbent polymer (SAP) to increase soil moisture and seedling establishment in rangeland restoration.

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Healing Practices And Ritual Feasts Among The Nabateans: A Study Of Absorbed Residues From Ceramics On The Ad-Deir Plateau, Jake Hubbert Apr 2023

Healing Practices And Ritual Feasts Among The Nabateans: A Study Of Absorbed Residues From Ceramics On The Ad-Deir Plateau, Jake Hubbert

Theses and Dissertations

Eastern Cistern B on the Ad-Deir Plateau is unusual in its breadth and variety of ceramic vessels represented by thousands of sherds. These sherds raised significant questions about the purpose and use of the vessels that they originally came from. This thesis argues that the ceramic vessels that were deposited in Eastern Cistern B represent the deposited remains of an ancient Nabataean ritual feast. Furthermore, this thesis also helps to answer the questions surrounding what the ceramic containers once held and their relationship to that ritual meal. This thesis identified residues absorbed within the ceramic fragments through the use of …

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Soft Robot Configuration Estimation: Towards Load-Agnostic Soft-Bodied Proprioception, Christian Peter Sorensen Apr 2023

Soft Robot Configuration Estimation: Towards Load-Agnostic Soft-Bodied Proprioception, Christian Peter Sorensen

Theses and Dissertations

The objective of the work described in this thesis is the development of a configuration estimation scheme for quasi soft-bodied robots, with the end goal being accurate soft-robot proprioception to enable robotic manipulation of unknown external loads. The first chapter introduces the problem and state-of-the-art modeling methods. The second chapter presents work we did building on previous research on a novel sensing scheme for soft-bodied robotic configuration estimation. The third chapter discusses the development of a geometric shape-sensing model based on overlapping tendon-length measurements. This model is geometrically exact for a body composed of two constant curvature segments in bending. …

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A Statistical Approach For Analyzing Expectations Alignment Between Design Teams And Their Project Stakeholders, Matthew Christian Goodson Apr 2023

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

Theses and Dissertations

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

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Gradient-Based Optimization Of Highly Flexible Aeroelastic Structures, Taylor G. Mcdonnell Apr 2023

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

Theses and Dissertations

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

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Zero And Few-Shot Concept Learning With Pre-Trained Embeddings, Jamison M. Moody Apr 2023

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

Theses and Dissertations

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

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Perfusion Pressure-Flow Relationships In Synthetic Poroelastic Vocal Fold Models, Cooper B. Thacker Apr 2023

Perfusion Pressure-Flow Relationships In Synthetic Poroelastic Vocal Fold Models, Cooper B. Thacker

Theses and Dissertations

The purpose of this research was to study perfusion pressure-flow relationships in self-oscillating synthetic poroelastic vocal fold (VF) models before, during, and after vibration. This was accomplished by developing a custom ultra-soft poroelastic material, incorporating the poroelastic material as the cover layer in a synthetic VF model, and studying the model vibratory response and the flow rate of fluid perfused through the cover layer while undergoing flow-induced vibration. The custom ultra-soft poroelastic material was developed using the method of direct templating with sucrose spheres as the sacrificial template and silicone as the infiltration medium. The average modulus of elasticity of …

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Experimental Validation Of A Vibration-Based Sound Power Method, Trent P. Bates Apr 2023

Experimental Validation Of A Vibration-Based Sound Power Method, Trent P. Bates

Theses and Dissertations

A vibration-based sound power (VBSP) measurement method is appealing because of its potential versatility in application compared to pressure- and intensity-based methods. The VBSP method is based on the well-known elementary radiators approach and is reliant on the acoustic radiation resistance matrix. Previous research has developed and validated the VBSP method for flat plates and cylinders. This thesis details work on extending the VBSP method to arbitrarily-curved structures. The approach of computing surface normal velocities from 3D velocity data measured by a scanning laser Doppler vibrometer (SLDV) is presented. This approach is validated with experimental sound power results of a …

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Factors That Influence The Recruitment And Retention Of Civil Engineers, Gina Young Souriac Apr 2023

Factors That Influence The Recruitment And Retention Of Civil Engineers, Gina Young Souriac

Theses and Dissertations

With a growing demand for civil engineers in the United States, understanding factors that influence students to choose civil engineering (CE) as a major in college, pursue an M.S. degree in CE, and persist in the CE industry can lead to valuable insights for recruitment and retention of future and current civil engineers. Additionally, understanding factors that prominently influence male and female civil engineers to persist in and depart from CE, separately, can lead to valuable insight towards improving focused recruitment and retention of both genders. This thesis includes three research studies that identify, analyze, and discuss these important factors. …

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Exploring The Impact Of Hour Of Code On Students' Cs Interest And Perceptions, Jessica Marie Yauney Apr 2023

Exploring The Impact Of Hour Of Code On Students' Cs Interest And Perceptions, Jessica Marie Yauney

Theses and Dissertations

As the focus on computer science in K-12 classrooms grows, the 'Hour of Code' program has also grown. As Hour of Code is one of the largest educational campaigns, it is worth evaluation to ensure effects are well understood so that implementation can be made most effective. This research sought to better understand the impact of Hour of Code. This thesis presents findings from a systematic review and from a quasi-experimental study. A large number of research articles have been published on Hour of Code. Systematic review identified 64 papers including reports from experiments testing the efficacy of Hour of …

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Testing Methodologies And Results Of Radiation Induced Soft Errors For A Cots Sram, Fram, And Soc, Wesley Raymond Stirk Apr 2023

Testing Methodologies And Results Of Radiation Induced Soft Errors For A Cots Sram, Fram, And Soc, Wesley Raymond Stirk

Theses and Dissertations

Methods for testing commercial off-the-shelf (COTS) digital devices at varying levels of complexity is presented and discussed as well as the results for testing a COTS SRAM, FRAM, and SoC using these methodologies in a pulsed dose rate environment at Little Mountain Test Facility (LMTF) and neutron testing at Los Alamos Neutron Science Center (LANSCE). Investigations at LMTF revealed a dependence in all three devices on the integrated dose of a single pulse of radiation, implying that the duration of radiation plays a significant role in the response. The test infrastructure necessary to dynamically access an FRAM at LMTF and …

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Rfssw Behavior Prediction Using A Numerical Model, Evan Robert Berger Apr 2023

Rfssw Behavior Prediction Using A Numerical Model, Evan Robert Berger

Theses and Dissertations

A two-dimensional axisymmetric thermo-mechanical model of the Refill Friction Stir Spot Welding (RFSSW) process was developed and validated with experimental data. Welding temperatures, tool forces, and material flow including defect formation, were accurately predicted by the model. Qualified repair techniques are critical for successful implementation of a welding process for use on large weldments with a significant number of spot joints, and this work demonstrates a repair technique for RFSSW that is validated both experimentally and numerically. Repaired properties are shown to exceed 90% of the original mechanical properties of the RFSSW process. RFSSW has different process parameters for every …

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Semi-Differentiation Of Reversible, Soluble-Insoluble Potential Sweep Voltammograms, Tyler Williams, Ranon Fuller, Cameron Vann, Devin Rappleye Apr 2023

Semi-Differentiation Of Reversible, Soluble-Insoluble Potential Sweep Voltammograms, Tyler Williams, Ranon Fuller, Cameron Vann, Devin Rappleye

Faculty Publications

Semi-differentiation, or convolution as it is sometimes known, is a mathematical technique commonly used to disentangle overlapping peaks in cyclic or linear sweep voltammograms. However, this technique is often misapplied due to misunderstandings of fractional calculus. Additionally, rigorous treatment and validation of the theory of semi-differential analysis of reversible, soluble-insoluble electrochemical reactions is lacking. Peculiarities of semi-differentiation are explored; theoretical relations for semi-differentiated voltammograms are given; the exponential nature of the theoretical curve is explored; theoretical relations are compared to experimental voltammograms for AgNO3 in 1 M nitric acid at 298 K, NiCl2 in LiCl at 974 K, …

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Strength And Durability Of Plastic Clays Treated With Cement Or Lime, Tyler D. Mickelson Apr 2023

Strength And Durability Of Plastic Clays Treated With Cement Or Lime, Tyler D. Mickelson

Theses and Dissertations

The objective of this research was to compare the efficacy of portland cement to that of lime for improving the strength and durability of plastic clays. The scope of work associated with this research involved laboratory strength and durability testing of three plastic clays treated with portland cement or lime. To ensure a broad application of the work, the clays were obtained from three different regions of the United States, specifically from project sites near Bloomington, Indiana; San Antonio, Texas; and Monticello, Utah. Laboratory testing included evaluation of selected properties of the three clays in the untreated condition and in …

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Load-Deformation Behavior Of Tension-Only X-Brace Roof Truss Diaphragms, Benjamin Johnson Meek Apr 2023

Load-Deformation Behavior Of Tension-Only X-Brace Roof Truss Diaphragms, Benjamin Johnson Meek

Theses and Dissertations

The alternative seismic design provisions for diaphragms provided in ASCE 7-22 Minimum design loads and associated criteria for buildings and other structures Section 12.10.3 account for both diaphragm ductility and displacement capacity, producing more accurate design forces and decreased detailing when compared to conventional seismic design methods. However, the diaphragm design force reduction factor has not yet been determined for tension-only roof truss diaphragms, a common system used in metal buildings. In this study, experimental tests of two cantilevered diaphragm subassembly specimens with tension-only rod bracing were conducted to determine the load-deformation behavior of the system. The first specimen used …

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First Episodic Atmospheric Deposition Of Nutrients To Utah Lake: Statistical Analysis And Characterization, Cristian Alun Dorrett Apr 2023

First Episodic Atmospheric Deposition Of Nutrients To Utah Lake: Statistical Analysis And Characterization, Cristian Alun Dorrett

Theses and Dissertations

Atmospheric deposition (AD) is a significant but poorly understood source of nutrients to many aquatic systems around the world. Accurate characterization of the nutrient budgets of aquatic systems is critical to good management decisions, so a better understanding of AD-related nutrient loads is essential, especially for water bodies where nutrient loads from atmospheric deposition are significant. Due to its large surface area, proximity to Great Basin dust sources, high values of atmospheric particulates due to inversions, and the high phosphorus content of local soils, Utah Lake, in the semi-arid Utah Valley, USA, experiences significant phosphorus loading from AD. The lake …

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Simulations Of Electrode Heterogeneity And Design For Lithium-Ion Batteries, Amir Sina Hamedi Apr 2023

Simulations Of Electrode Heterogeneity And Design For Lithium-Ion Batteries, Amir Sina Hamedi

Theses and Dissertations

This work develops three models for simulation of the high-current operation of Li-ion batteries. Simulation as a tool can provide understanding beyond what experiments can offer. Different types of electrodes such as graphite, silicon, and NMC are modeled to study cell performance and aging under aggressive operating conditions. The first part of this work focuses on the effect of electrode microscale lateral heterogeneity on the degradation of conventional Li-ion batteries, especially for fast-charge applications. The non-uniform pore distribution leads to the nonuniform current density and state of charge (SoC), which can finally result in non-uniform Li plating and aging. The …

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A Process For Improving The Quality Of Multiple-Choice Certification Exams, Tanner Kohler Apr 2023

A Process For Improving The Quality Of Multiple-Choice Certification Exams, Tanner Kohler

Instructional Psychology and Technology Graduate Student Projects

This paper describes a process for improving the content validity and overall difficulty multiple-choice certification exams. The report describes an initial evaluation of existing certification exams and outlines how to basic tables of specifications to identify areas of weakness and guide improvements with the help of subject-matter experts.

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Designing Resilient Agents Using Grammatical Evolution, Behavior Trees, And Finite Linear Temporal Logic, Aadesh Neupane Apr 2023

Designing Resilient Agents Using Grammatical Evolution, Behavior Trees, And Finite Linear Temporal Logic, Aadesh Neupane

Theses and Dissertations

Resilience is essential for long-term autonomous agents. Swarm behaviors seen in bees, ants, birds, fish, and others are interesting because they resiliently perform complex coordinated tasks like foraging, nest-selection, flocking and escaping predators without centralized control or coordination. Conventionally, mimicking swarm behaviors with robots requires researchers to study actual behaviors, derive mathematical models, and implement these models as state machines. Since the conventional approach is time-consuming and cumbersome, this dissertation uses a grammatical evolution algorithm with Behavior Trees (BTs) to evolve behaviors that are resilient to different perturbations for foraging and nest maintenance tasks. The modular, reactive, and readable properties …

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Toward Automatically Composed Fpga-Optimized Robotic Systems Using High-Level Synthesis, Szu-Wei Lin Apr 2023

Toward Automatically Composed Fpga-Optimized Robotic Systems Using High-Level Synthesis, Szu-Wei Lin

Theses and Dissertations

Robotic systems are known to be computationally intensive. To improve performance, developers tend to implement custom robotic algorithms in hardware. However, a full robotic system typically consists of many interconnected algorithmic components that can easily max-out FPGA resources, thus requiring the designer to adjust each algorithm design for each new robotic systems in order to meet specific systems requirements and limited resources. Furthermore, manual development of digital circuitry using a hardware description language (HDL) such as verilog or VHDL, is error-prone, time consuming, and often takes months or years to develop and verify. Recent developments in high-level synthesis (HLS), enable …

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Permanent Passive Fire Protection Against Wildland-Urban Interface Fires, Makenzie Wilson Apr 2023

Permanent Passive Fire Protection Against Wildland-Urban Interface Fires, Makenzie Wilson

Theses and Dissertations

The average intensity and frequency of wildland fires have been on the rise over the years, leading to an increase in the risk to homes located in the Wildland-Urban Interface (WUI). Fire suppression is the most used method of wildland fire control, but this suppression can cause wildland fires to become more frequent and devastating. Increased development in the WUI also puts these homes at greater risk. Current methods of passive fire protection are effective, but these methods are expensive, time consuming to set up, and not fully effective. This research proposes a permanent passive fire protection system that is …

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From Smes, For Smes: Qualitative Insights Within The Instructional Designer-Subject Matter Expert Collaborative Relationship In The Field Of Technology And Innovation Management, Spencer Jay Nielson Apr 2023

From Smes, For Smes: Qualitative Insights Within The Instructional Designer-Subject Matter Expert Collaborative Relationship In The Field Of Technology And Innovation Management, Spencer Jay Nielson

Theses and Dissertations

Recent literature on the relationship between instructional designers (IDs) and subject matter experts (SMEs) reveals how much more is known about the challenges faced by IDs and more solutions are offered in their respective role compared to their SME partners. This study uses interpretative phenomenological analysis (IPA) to investigate the ID-SME collaborative relationship from the perspective of and the utility for the SME role within the field of Technology and Innovation Management (TIM). Six SMEs within the field of TIM were interviewed to discover more on the nature of their working relationship, specifically in regard to (a) their conceptual understanding …

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Long-Term Modulus Of Microcracked Cement-Treated Base Layers, Patrick Matthew Mcdivitt Apr 2023

Long-Term Modulus Of Microcracked Cement-Treated Base Layers, Patrick Matthew Mcdivitt

Theses and Dissertations

The objective of this research was to measure and analyze the long-term modulus values of cement-treated base (CTB) layers constructed in Utah using microcracking. Because modulus values of pavement layers are among the most influential inputs affecting mechanistic-empirical pavement design, obtaining reasonable estimates of modulus values is critical. Testing was performed with a portable falling-weight deflectometer, also called a lightweight deflectometer, and modulus values were backcalculated with the computer program BAKFAA. Testing occurred at five asphalt pavement sites in northern Utah, where reconstruction with full-depth reclamation and cement stabilization, in the form of cement slurry, was performed approximately 2 to …

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A Comparison Of Kid Goat Lipase And Microbial Lipase On The Development Of Cheddar Cheese Flavor, Reece H. Larsen Apr 2023

A Comparison Of Kid Goat Lipase And Microbial Lipase On The Development Of Cheddar Cheese Flavor, Reece H. Larsen

Theses and Dissertations

Background: Manufacturers continue to look for methods to save time in aging cheese. Complex reactions occur during cheese ripening that produce characteristic flavors and aromas. The addition of exogenous lipase enzymes is one accelerated ripening method that has been studied. Our objective was to document and compare the flavor profiles of cheddar cheeses created with either microbial lipase or animal lipase. Materials and Methods: The experiment followed a conventional formulation to create experimental batches of cheddar cheese. Kid goat lipase and three microbial lipase treatments were compared against a control. Other animal lipases were evaluated in preliminary research but were …

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New Perspectives On Foot Segment Forces And Joint Kinetics - Integrating Plantar Shear Stresses And Pressures With Multi-Segment Foot Modeling, Dustin A. Bruening, Spencer R. Petersen, Sarah T. Ridge Apr 2023

New Perspectives On Foot Segment Forces And Joint Kinetics - Integrating Plantar Shear Stresses And Pressures With Multi-Segment Foot Modeling, Dustin A. Bruening, Spencer R. Petersen, Sarah T. Ridge

Faculty Publications

The role of the foot in gait is not well understood, in part due to challenges in capturing and utilizing segmental ground reaction forces. The purposes of this study were to 1) develop methodology to integrate plantar pressure/shear stresses with a multi-segment foot model, and 2) generate and display key normative data from this combined system. Twenty-six young healthy adults walked barefoot (1.3 m/s) across a pressure/shear sensor with markers matching a published 4-segment kinetic foot model. A novel anatomical/geometric masking method was developed that successfully separated regions aligned with model segmentation. This template-based method can be automated and customized …

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Validation And Development Of Top-Down Illumination For Optofluidic Biosensors, Matthew Marley Hamblin Apr 2023

Validation And Development Of Top-Down Illumination For Optofluidic Biosensors, Matthew Marley Hamblin

Theses and Dissertations

Lab-on-a-chip devices are changing the way that medical testing is performed by allowing rapid testing with small samples. Optofluidic biosensors are a type of lab-on-a-chip device that use light excitation on a fluid sample. One such application of an optofluidic biosensor is a device that can detect antibiotic resistant bacteria by combining DNA from a sample with fluorescent beads, flowing that sample through a hollow channel, and shining laser light on the channel. If the bacteria tested for is present, the fluorescent beads will give off photons that can be detected as a positive signal. The main method for illumination …

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A Language-Model-Based Chatbot That Considers The User's Personality Profile And Emotions To Support Caregivers Of People With Dementia, Yeganeh Nasiri Apr 2023

A Language-Model-Based Chatbot That Considers The User's Personality Profile And Emotions To Support Caregivers Of People With Dementia, Yeganeh Nasiri

Theses and Dissertations

Chatbots are programs that mimic human conversation using Artificial Intelligence (AI). Recent advances in natural language pro- cessing pave the way for chatbots to generate more human-like responses. Therefore, chatbots are finding more complex tasks to perform, such as emotional support which requires both understanding emotions and the ability to properly respond to them. This work presents a chatbot capable of identifying the user's personality and creating responses based on that. During this process, emotion detection is being used to detect and react to users' emotions. The chatbot uses a dynamic knowledge graph to save information as the conversation goes …

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Unsupervised Categorical Clustering On Labor Markets, Matthew James Steffen Apr 2023

Unsupervised Categorical Clustering On Labor Markets, Matthew James Steffen

Theses and Dissertations

During this "white collar recession,'' there is a flooded labor market of workers. For employers seeking to hire, there is a need to identify potential qualified candidates for each job. The current state of the art is LinkedIn Recruiting or elastic search on Resumes. The current state of the art lacks efficiency and scalability along with an intuitive ranking of candidates. We believe this can be fixed with multi-layer categorical clustering via modularity maximization. To test this, we gathered a dataset that is extensive and representative of the job market. Our data comes from PeopleDataLabs and LinkedIn and is sampled …

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