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Deep Learning For Source Localization In A Laboratory Tank, Corey Emerson Dobbs
Deep Learning For Source Localization In A Laboratory Tank, Corey Emerson Dobbs
Theses and Dissertations
Deep learning has been applied to underwater acoustics problems in many forms. One difficulty in applying deep learning techniques to ocean acoustics is the spatially and temporally varying environmental properties. Another challenge is the lack of labeled data for training large networks. The overall goal of this work is to develop deep learning approaches for source localization that can be adaptable to different conditions. In this work, a convolutional neural network was trained on acoustic data measured in a water tank, while the water was at room temperature, to predict source-receiver range. Tests were done to ascertain ideal quantities of …
Wind-Carved Wonders: An Aerial Study Of Yardangs In The Puna, Argentina Using Drone And Satellite Imagery, Derek Gordon Ashliman
Wind-Carved Wonders: An Aerial Study Of Yardangs In The Puna, Argentina Using Drone And Satellite Imagery, Derek Gordon Ashliman
Theses and Dissertations
Yardangs, elongated landforms sculpted by wind erosion, are prominent features in the Campo de Piedra Pomez (CPP) region of the Puna-Altiplano Plateau, Argentina. This study explores their formation and evolution through the examination of a 6 km by 0.5 km area captured in 2019 and a 5 km by 0.5 km area in 2024. High-resolution drone imagery and satellite data were employed to classify and quantify yardangs, gravel, and underlying bedrock across a vast study area. The research reveals a variation in yardang distribution and morphology from northwest (windward) to southeast (leeward), noting a significant decrease in yardang and bedrock …
Emergent Leadership, L2 Oral Proficiency, And Social Networks During Study Abroad, Nicole C. Whitby
Emergent Leadership, L2 Oral Proficiency, And Social Networks During Study Abroad, Nicole C. Whitby
Theses and Dissertations
Research shows that study abroad (SA) provides a unique, yet varied outcome for students seeking to improve their target language oral proficiency during study abroad SA (Freed et al., 2004). Contemporary work in second language acquisition (SLA) during SA has looked beyond individual behaviors of sojourners to analyze social networks as a structure with significant influence on outcomes, yet emergent leadership has not been addressed within social network analysis in SA. To address this gap the current study employed a computational social network approach. This mixed methods study analyzes the social networks of 30 SA sojourners from a large private …
Fission Product Thermodynamics, Solubility, And Extraction In Molten Salts And Lead, Richard Lee Fitzhugh
Fission Product Thermodynamics, Solubility, And Extraction In Molten Salts And Lead, Richard Lee Fitzhugh
Theses and Dissertations
Chemical behavior of fission products in systems relevant to two major advanced nuclear reactor systems, namely the lead-cooled fast reactor (LFR) and molten-salt reactor (MSR), has been studied with a heavy emphasis on thermodynamics. The behavior of fission products in molten salts is examined from a theoretical perspective, with an emphasis on the standard state used to define the thermodynamic activity. A standard state extrapolated from infinite dilution behavior, which is fairly common practice in electrochemistry, is found to facilitate faster, easier, and simpler analysis while retaining much of the accuracy of the complex Modified Quasichemical Model. Inductively-coupled plasma mass …
An Investigation Of University General Education Assessment Practice, Joseph H. Hanks
An Investigation Of University General Education Assessment Practice, Joseph H. Hanks
Theses and Dissertations
Many-facets Rasch modeling (MFRM) is an effective way to compensate for rater effects (e.g., rater leniency/severity) in the ratings assigned during rater-mediated assessment. While a fully crossed MFRM rating design, in which all raters rate every rating object, is the ideal from a psychometric standpoint; fully crossed designs are rarely implemented in practice because of the resource burden they impose on assessment personnel. Thus, incomplete rating designs, where each rater does not rate all rating objects, are the norm. However, unless assessment personnel consciously attend to a variety of aspects of rating design, incomplete rating designs may suffer from design …
Dynamics Of Dissolved And Particulate Trace Metals In A Snowmelt-Dominated Stream, Provo River, Utah, Usa, Kendra Louise Caskey
Dynamics Of Dissolved And Particulate Trace Metals In A Snowmelt-Dominated Stream, Provo River, Utah, Usa, Kendra Louise Caskey
Theses and Dissertations
Trace element concentrations vary substantially during snowmelt runoff, with changes in the dissolved versus particulate fractions potentially impacting their movement at the catchment scale. To investigate trace element behavior in a snowmelt dominated stream, we measured concentrations in different size fractions in the Provo River (northern Utah, USA). We sampled the river at three locations during water years 2016-2018 and 2021-2023 for trace metal and major ion concentrations. During the final year, we collected three fractions (unfiltered, <0.45 µm filtered, and <0.22 µm filtered) for trace metal chemistry and calculated the particulate concentration as the difference between the unfiltered and 0.45 µm fraction. Stream measurements included pH, discharge, turbidity, and fluorescent dissolved organic matter (fDOM). We also sampled water sources (soil water, ephemeral streams, and snowpack) to compare trace metal concentrations across the watershed with the stream. Trace metal (Al, Be, Fe, Pb) and rare earth element (REE +Y) concentrations had the highest particulate and dissolved concentrations during snowmelt runoff. In contrast, major cations were primarily found in the dissolved fraction with lowest concentrations during snowmelt runoff. Major cation and particulate metal concentrations increased from upstream to downstream. The increased trace metal and REE + Y concentrations during snowmelt relative to baseflow may be explained by increased discharge and associated increased turbidity and fDOM. A comparison with water sources suggests that dissolved and particulate trace metals in the stream are sourced from flushed soil water, as trace metal transport through the watershed is facilitated by suspended sediment and dissolved organic matter. For most of the trace metals and REE +Y, concentrations were similar in the <0.45 µm and <0.22 µm fractions. Yet Al tended to have higher concentrations in the <0.45 µm fraction, suggesting a colloidal form of Al between 0.22 µm and 0.45 µm may exist. Differences from upstream to downstream may be related to changes in pH, from ~7 at the upper site to ~8 at the lower sites, which would change sorption capacity, saturation indices, or speciation. Our study demonstrates that trace metal concentrations are variable during snowmelt as the metals interact with suspended particles or dissolved organic matter and are influenced by changing water chemistry, with implications for understanding water quality impairments in snowmelt-dominated streams.
A Comparative Analysis Of Human And Machine Translation Quality, Catherine Marshall
A Comparative Analysis Of Human And Machine Translation Quality, Catherine Marshall
Theses and Dissertations
A common question raised by both translators and Machine Translation developers is Will Machine Translation (MT) ever attain the level of Human Translation (HT) quality? Researchers have argued that MT will likely never replace HT completely because MT systems cannot anticipate all the specifications for possible translation projects (Melby & Hague, 2019) and because MT systems lack cultural understanding (Latief et al., 2020). Researchers have also argued that the use of machines should be focused on augmenting humans, rather than trying to imitate them (Brynjolfsson, 2022). The purpose of this study is to determine how the quality of MT differs …
A Sensitivity Equation Framework For Parameter Estimation In Dynamical Systems, Joshua Newey
A Sensitivity Equation Framework For Parameter Estimation In Dynamical Systems, Joshua Newey
Theses and Dissertations
We present a new framework for understanding parameter estimation in dynamical systems. The approach is developed within the modeling approach of continuous data assimilation. We outline the basic assumptions that lead to our derivation. Under these assumptions we show that the parameter estimation turns into a finite dimensional nonlinear optimization problem. We show that our derivation reproduces and extends the algorithm originally developed in [9]. We then implement these methods in three example systems: the Lorenz '63 model, the two-layer Lorenz '96 model, and the Kuramoto Sivashinsky equation. So as to remain sufficiently general, our derivations are largely formal; we …
Tools For Planning Multi-Axis Vibration Qualification Tests, Marcus Edward Behling
Tools For Planning Multi-Axis Vibration Qualification Tests, Marcus Edward Behling
Theses and Dissertations
Vibration qualification testing is necessary to ensure that components will endure vibration-induced damage in flight. Multi-axis tests have shown the potential for improvement over single-axis tests, though they require increased planning. This work focuses on planning three critical aspects of these tests: the amount of operational next assembly to include in the test, the size of shakers to use, and the number of shakers to use. Next assembly selection is studied by varying the amount of next assembly included in the lab test, performing physical tests, and comparing the accuracy of environment reconstruction in each test. In doing so, a …
Design For Pullout Resistance And Global Stability Of Metallic Reinforcements In Mse Walls With Lightweight Cellular Concrete Backfill, Joshua Curt Peterson
Design For Pullout Resistance And Global Stability Of Metallic Reinforcements In Mse Walls With Lightweight Cellular Concrete Backfill, Joshua Curt Peterson
Theses and Dissertations
Lightweight cellular concrete (LCC) is a type of concrete that has reduced density and weight compared to traditional concrete. This is achieved by incorporating a large amount of air- filled cells or voids into the mixture. The resulting material is lighter, yet still possesses considerable strength and durability, making it suitable for a range of construction applications, especially in the case of retaining walls because of its reduced weight. Unlike traditional concrete, which can be extremely heavy and place significant stress on the supporting structure, lightweight cellular concrete reduces the pressure on the retaining wall, helping to prevent deformation and …
Demand Side Management Through Integrated Water Distribution Systems And Smart Irrigation Controllers, Nathan T. Lunstad
Demand Side Management Through Integrated Water Distribution Systems And Smart Irrigation Controllers, Nathan T. Lunstad
Theses and Dissertations
The innovation of electrical utilities in creating smart electrical grids has superseded that of water utilities in analogous efforts. While many water utilities are now using smart water technologies, they lack the virtual command center that allows for two-way communication for more effective forecasting, load balancing, preventive methods, emergency and master planning, and level of service delivery while ensuring environmental justice and enhancing the responsible use of resources. In this dissertation, I propose the idea of the Integrated Water Distribution System (IWDS) to overcome this challenge. IWDS coordinates management of water supply and demand in a way that benefits both …
Pretty Good State Transfer And Fractional Revival In Double Extended Star Graphs, Kellon G. Sandall
Pretty Good State Transfer And Fractional Revival In Double Extended Star Graphs, Kellon G. Sandall
Theses and Dissertations
Much research has been done in the realm of quantum walks over networks of qubits. We primarily study a type of graph consisting of a path with two stars connected to the leaves which we call a Double Extended Star. We find that Pretty Good State Transfer can occur in many ways in a Double Extended Star and that Fractional Revival cannot occur in Double Extended Stars except when the length of the path within is one.
Exploring The Mechanism Of Increased Survival In Rb1-Mutant Glioblastoma Multiforme, Lucia Wesemann
Exploring The Mechanism Of Increased Survival In Rb1-Mutant Glioblastoma Multiforme, Lucia Wesemann
Undergraduate Honors Theses
Glioblastoma Multiforme (GBM) is an incredibly invasive and particularly lethal central nervous system cancer. Recent work has shown that GBM patients with mutated RB1 have greater overall survival. A proposed mechanism for the improved prognosis of this molecular subgroup is mainly supported by previous research that is not specific to GBM. I utilize the Clinical Proteomic Tumor Analysis Consortium (CPTAC) dataset to interrogate this mechanism using GBM-specific data. The mechanism is largely not supported by the CPTAC GBM dataset, and the trend of significantly improved overall survival in RB1-mutant GBM patients is not validated here. This study highlights the …
Geological And Geophysical Model Of The Sand Wash Extensional Decollement, Utah, Brigham Louis Cardon
Geological And Geophysical Model Of The Sand Wash Extensional Decollement, Utah, Brigham Louis Cardon
Theses and Dissertations
The Sand Wash Fault Zone (SWFZ) in the southern Uinta Basin is a significant extensional fault zone exhibiting complex deformation patterns. Our study integrates detailed structural analyses with a broader tectonic model to elucidate the tectonic evolution of the region. The SWFZ, extending over 34 km with a NW-SE strike, is underlain by an extensional decollement. Substantial deformation is observed in the upper layers, notably within the S2 sandstone of the Eocene Green River Formation. The deformation diminishes with depth, terminating at the oil-rich Mahogany oil shale zone, below which minimal deformation is observed. Our tectonic model, developed primarily through …
The Effects Of Combining Β-Lactam Antibiotics And Mefloquine In Multi-Drug Resistant Pseudomonas Aeruginosa, Kayla C. Maas
The Effects Of Combining Β-Lactam Antibiotics And Mefloquine In Multi-Drug Resistant Pseudomonas Aeruginosa, Kayla C. Maas
Theses and Dissertations
Pseudomonas aeruginosa, a notorious opportunistic pathogen, is a leading cause of hospital-acquired infections. The newest generation of β-lactam antibiotics, the carbapenems, are often used to treat multi-drug resistant (MDR) P. aeruginosa infections. Treatment of P. aeruginosa has become increasingly difficult due to its remarkable ability to resist antibiotics through various intrinsic and acquired mechanisms. Physicians rely on a limited group of antibiotics to treat these infections, but many P. aeruginosa isolates are evolving to become resistant to all available antibiotics, including carbapenems. The multifaceted mechanisms underlying P. aeruginosa antibiotic resistance include β -lactamases, efflux pumps, altered membrane porins, and antibiotic …
Exploring How Caregiver Multiracial Socialization Is Related To Multiracial Identity Pride, Self-Esteem, And Racial Political Identity In Emerging Adulthood, Jennie Jasperson
Exploring How Caregiver Multiracial Socialization Is Related To Multiracial Identity Pride, Self-Esteem, And Racial Political Identity In Emerging Adulthood, Jennie Jasperson
Theses and Dissertations
The current study examined how caregiver multiracial socialization processes play a role in multiracial emerging adults' multiracial identity pride self-esteem, and racial political identity. The constructs of caregiver multiracial socialization, multiracial identity pride in emerging adulthood, sense of self-esteem in emerging adulthood, and racial political identity in emerging adulthood were examined among 387 multiracial emerging adults between the ages of 18-29 from across the United States. To examine these relationships, multiple regressions were run to analyze data. The results of this study underscore the significance of understanding the role that socialization processes within multiracial families play in ethnic racial identity …
Power In Picturebooks: A Teacher's Critical Multicultural Analysis Of Illustrated Versions Of Little Red Riding Hood, Adrianna Catherine Galtieri
Power In Picturebooks: A Teacher's Critical Multicultural Analysis Of Illustrated Versions Of Little Red Riding Hood, Adrianna Catherine Galtieri
Theses and Dissertations
This study is a critical examination of the ways power is depicted in six illustrated versions of the "Little Red Riding Hood" story. Anchored in the notions that children's texts are neither ideologically neutral nor inherently benign, a kindergarten teacher analyzed "Little Red Riding Hood" tales for the ways the main character acts and/or is acted upon. Traditional versions of the story are often read as didactic tales that remind young readers to obey their parents in order to stay safe. However, the findings of this study suggest that reimagined versions of the classic tale can open important conversations about …
Tribological Analysis Of Heat Treatments On Medical Grade Cobalt Chromium Molybdenum Alloys, Samuel Edis Bowden
Tribological Analysis Of Heat Treatments On Medical Grade Cobalt Chromium Molybdenum Alloys, Samuel Edis Bowden
Theses and Dissertations
Cobalt chromium molybdenum (CoCrMo) has many material properties that make it desirable as a medical hip implant. Due to the range of heat treatments available and the resulting material properties that are present in medical device manufacturing using CoCrMo, many implants are not able to withstand both the chemical and physical wear necessary as a hip replacement. This research looks to examine various heat treatments and their resulting properties to find a desirable heat treatment for CoCrMo in hip implant bearing surfaces. This study was accomplished by using five distinct variations of heat treatment on forged CoCrMo alloy that would …
Exploring The Intergenerational Links Between Parent And Child Couple Conflict Styles: Attachment Behaviors And Forgiveness As Moderators, Ashley Forbush
Exploring The Intergenerational Links Between Parent And Child Couple Conflict Styles: Attachment Behaviors And Forgiveness As Moderators, Ashley Forbush
Theses and Dissertations
Conflict is a fundamental element of couple relationships, and the styles of conflict partners use can either enhance or undermine couples' relationship satisfaction and stability. Previous research has found clear links between parent and adult children's conflict strategies, but little is known about how adult children can change their conflict approach from what they observed in their family of origin, especially when they come from homes with dysfunctional forms of conflict. To better understand what factors help children change their style of conflict, the current study used data from 1,077 married couples from the CREATE study. Multinomial logit regression was …
Defensiveness And Accountability In Couple Relationships: A Constructivist Grounded Theory Analysis, Collin Joshua Wright
Defensiveness And Accountability In Couple Relationships: A Constructivist Grounded Theory Analysis, Collin Joshua Wright
Theses and Dissertations
Defensiveness is empirically well documented as a factor in breakup and divorce which have wide ranging consequences for adults and affected children, however, little research exists on what Gottman has called the antidote to defensiveness which is taking an accurate amount of accountability. The purpose of this study was to use qualitative methods to illuminate the microprocesses which take place between partners in interactions regarding accountability and defensiveness. The data was taken from part of a larger project on healthy and unhealthy relationships where semi-structured interviews were conducted from a diverse sample recruited through convenience and theoretical sampling. Constructivist grounded …
Chronic Stress And Well-Being: Testing Mindfulness As A Proposed Method To Decrease Stress In Parents Of Children With Autism Spectrum Disorder, Madeline M. Gillies
Chronic Stress And Well-Being: Testing Mindfulness As A Proposed Method To Decrease Stress In Parents Of Children With Autism Spectrum Disorder, Madeline M. Gillies
Theses and Dissertations
Parenting is a demanding role that encompasses many responsibilities and challenges. When a child is diagnosed with autism spectrum disorder, there are additional demands on the parent's time, energy, and financial resources, which likely leads to increased levels of chronic stress for parents. This dissertation examines the differences in chronic stress levels between parents who have children with autism and parents who do not, using hair cortisol concentration (HCC) as a benchmark. This dissertation also explores reducing parental stress by introducing a mindfulness intervention. Participants (n = 68) were recruited and divided into two groups: Parents of children who have …
Engineering Cell-Free Protein Synthesis Biosensors For Point Of Care Use, Tyler Jordan Free
Engineering Cell-Free Protein Synthesis Biosensors For Point Of Care Use, Tyler Jordan Free
Theses and Dissertations
Diagnostic tests can dramatically improve and save lives. Survival rates and patient outcomes related to cancer and other diseases can be improved when routine testing guides personalized treatment. Highly accurate laboratory tests exist for thousands of biomarkers, including those of interest in this dissertation, but cost and complexity limit access to life-saving lab tests in many cases throughout the world. To fill this need and increase accessibility of diagnostics, in this report we report our engineering advancements towards portable biosensors for colorimetric detection of glutamine, endocrine disrupting compounds (EDC), and pathogenic RNA which are key biomarkers in cancer treatment monitoring, …
Systematic Review Of Digital Activity Schedule Use In Individuals With Autism And Intellectual Disability, Adelaide Wahlquist Hammond
Systematic Review Of Digital Activity Schedule Use In Individuals With Autism And Intellectual Disability, Adelaide Wahlquist Hammond
Theses and Dissertations
The purpose of this systematic review of using digital activity schedules as an intervention in individuals with autism spectrum disorder and intellectual disabilities is to determine to what extent the current research shows it to be an effective intervention. For articles to be included in this review, they had to use a digitally presented activity schedule, the activity schedule could not be a task analysis of a single activity or a group visual schedule, and the intervention must have been carried out with individuals with autism or intellectual disabilities. Studies meeting the inclusion criteria totaled 17 studies with a total …
A Comparative Illustration Of Trip- And Activity-Based Modeling Techniques, Steven Hayden Atchley
A Comparative Illustration Of Trip- And Activity-Based Modeling Techniques, Steven Hayden Atchley
Theses and Dissertations
Activity-based travel demand models are generally considered superior to their trip-based counterparts, as activity-based models (ABMs) explicitly model individuals in contrast to the aggregate nature of trip-based models. There have been a number of comparisons between trip- and activity-based models, but these comparisons focus almost exclusively on the technical ability of the two model types, while not considering the practical benefits an ABM may or may not have to a transportation agency. This research performs a more holistic comparison between trip- and activity-based models, focused specifically on the practical differences between model types, both in terms of usability and capability …
Raw Data For M5h2r1 Origami Flasher Deployment Tests, Philip Klocke
Raw Data For M5h2r1 Origami Flasher Deployment Tests, Philip Klocke
ScholarsArchive Data
These data sets contain raw force data from the deployment tests of a case study origami Flasher.
Raising Hope: A Preliminary Investigation Of Hope-Strengthening Parenting, Anna Sellers Calley
Raising Hope: A Preliminary Investigation Of Hope-Strengthening Parenting, Anna Sellers Calley
Theses and Dissertations
Hope Theory defines hope as a cognitive-motivational process of seeking and obtaining goals through agency thinking and pathway building, with substantive connection to many desirable outcomes. While hope is theorized to begin developing early in life, this assumption has never been empirically investigated. This is due to limitations in established hope measurement. There is an additional gap in the research surrounding the role of parents in the development of hope. In this study, I address each of these gaps by utilizing a novel measure of hope in early childhood and running a multiple linear regression model to investigate potential connections …
Connecting Hiv-1 Viral Protein R Polymorphisms To Changes In Inflammatory Signals And Efficacy Testing Of Essential Oils As Disinfectants Against Sars-Cov-2, J. Brandon Lopez
Connecting Hiv-1 Viral Protein R Polymorphisms To Changes In Inflammatory Signals And Efficacy Testing Of Essential Oils As Disinfectants Against Sars-Cov-2, J. Brandon Lopez
Theses and Dissertations
Human Immunodeficiency Virus (HIV-1) is the causative agent for acquired immunodeficiency syndrome (AIDS). Different strains of HIV-1 have been linked to a long term non-progressor (LTNP) or rapid progressor (RP) form of disease depending on rate of AIDS progression. Viral protein R (Vpr) is a viral protein that has been linked to varying rates of AIDS progression depending on the sequence. In this work, the effects of two polymorphisms, a LTNP and a RP, on different cells are studied. The LTNP virus was linked to lower release of pro-inflammatory cytokines, such as TNF and IL-6, and an increase in apoptotic …
Real-Time Dynamically Feasible B-Spline Trajectory Generation For Unmanned Aircraft, David Lavae Christensen
Real-Time Dynamically Feasible B-Spline Trajectory Generation For Unmanned Aircraft, David Lavae Christensen
Theses and Dissertations
Onboard aircraft systems must frequently plan dynamically feasible paths or trajectories to safely and quickly reach their goal position. Optimized B-splines are promising because they can guarantee kinematic feasibility in a computationally efficient manner and can be applied to a variety of vehicle models. However, current B-spline solutions do not adequately constrain trajectories to the physical limitation of the vehicles they are planning for, or are often too conservative. Most are also limited to path smoothing or require pre-optimized timing parameters. This thesis develops a real-time B-spline optimization-based trajectory generator capable of minimizing time while respecting the velocity, acceleration, and …
Investigating Cloth Sculpting For Simulation Control In Virtual Reality, Matthew S. Bishop
Investigating Cloth Sculpting For Simulation Control In Virtual Reality, Matthew S. Bishop
Theses and Dissertations
Artists require control and predictability over physically based simulations to create their required animation. This control can lead to reduced iteration time to get the desired simulation results. Controlling cloth simulations can require manual effort to create goal keyframes for control algorithms to match. Current techniques and research utilize a keyboard and mouse to create these goal keyframes. Other research has looked at using a virtual reality (VR) head-mounted display with controllers to improve the experience of completing similar animation tasks. However, we are not aware of any research that attempts to use VR as a tool to assist artists …
Development And Application Of A Particle-Based Reactor Network Model For Entrained Flow Gasifier Design, Eric Christian Monson
Development And Application Of A Particle-Based Reactor Network Model For Entrained Flow Gasifier Design, Eric Christian Monson
Theses and Dissertations
A novel particle-based reactor network model (PRNM) was developed to predict the performance of a dry-feed, pressurized, single-stage, slagging entrained flow gasifier under various operational parameters. This model provides improved detail of particle conversion as a function of gasifier location, particle size, and fuel type not available in standard reactor network models. The model inputs were designed to allow changes in geometry, firing rate, stoichiometric ratio, fuel type, and inlet gas composition. Key performance metrics included the gas and refractory temperature profiles, axial gas compositions, and particle burnout. PRNM used a network of idealized reactors to specify the flow field …