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Methods For Finding Best Coset Codes For Physical-Layer Security, Andrew Glenn Swain
Methods For Finding Best Coset Codes For Physical-Layer Security, Andrew Glenn Swain
Theses and Dissertations
Finding best coset codes for secrecy over the binary erasure wiretap channel remains a difficult problem. Greater understanding of the structure of coset codes is necessary to reduce the problem space in which we search for these best codes. This dissertation presents new necessary conditions for a code to be best, including a condition that states that a code must maximize the minimum distance of both itself and its dual. It introduces and evaluates the accuracy of new heuristics to approximate the code's equivocation based on a code's weight enumerator polynomial. We also present a new tool for visualizing the …
Predicted Strength And Ductility Of Roof Truss Diaphragms With Tension-Only Rod Bracing And Hillside Washer Rod Connections, Emma Jean Brown
Predicted Strength And Ductility Of Roof Truss Diaphragms With Tension-Only Rod Bracing And Hillside Washer Rod Connections, Emma Jean Brown
Theses and Dissertations
Metal buildings with roof truss diaphragms and tension-only rod bracing are a common structural system for single story industrial and commercial buildings. Despite the widespread use of metal building diaphragms in modern construction, there is limited knowledge on their strength and ductility under seismic loads. In this study, finite element models of diaphragm subassemblies and a full-size diaphragm were created to determine the strength and ductility of metal building diaphragms with tension-only rod bracing using hillside washer rod connections. Finite element models of two-tier diaphragm specimens that had been previously tested in the laboratory were created. Girders and purlins were …
High-Performance Concrete Comprising Silica Fume: Evaluation Of The Decommissioned Salt Lake City Airport Parking Structure, Trevor William Pratt
High-Performance Concrete Comprising Silica Fume: Evaluation Of The Decommissioned Salt Lake City Airport Parking Structure, Trevor William Pratt
Theses and Dissertations
The objective of this research was to quantify the benefits of silica fume through a detailed investigation of the concrete decks within the now-demolished Salt Lake City International Airport parking structure, which was constructed in 1991, after it had been in service for almost 30 years. Several tests were performed to evaluate each of five areas within the parking structure. The results of field testing included data obtained from visual inspection, chain dragging, Schmidt hammer testing, and cover meter readings, while the results of laboratory testing included data obtained from chloride concentration, modulus of elasticity, electrical impedance, rapid chloride permeability, …
Acoustothermal Transfection For Cell Therapy, Xiufang Liu, Ning Rong, Zhenhua Tian, Joseph Rich, Lili Niu, Pengqi Li, Laixin Huang, Yandai Dong, Wei Zhou, Pengfei Zhang, Yizhao Chen, Congzhi Wang, Long Meng, Tony Jun Huang, Hairong Zheng
Acoustothermal Transfection For Cell Therapy, Xiufang Liu, Ning Rong, Zhenhua Tian, Joseph Rich, Lili Niu, Pengqi Li, Laixin Huang, Yandai Dong, Wei Zhou, Pengfei Zhang, Yizhao Chen, Congzhi Wang, Long Meng, Tony Jun Huang, Hairong Zheng
Faculty Publications
Transfected stem cells and T cells are promising in personalized cell therapy and immunotherapy against various diseases. However, existing transfection techniques face a fundamental trade-off between transfection efficiency and cell viability; achieving both simultaneously remains a substantial challenge. This study presents an acoustothermal transfection method that leverages acoustic and thermal effects on cells to enhance the permeability of both the cell membrane and nuclear envelope to achieve safe, efficient, and high-throughput transfection of primary T cells and stem cells. With this method, two types of plasmids were simultaneously delivered into the nuclei of mesenchymal stem cells (MSCs) with efficiencies of …
A Hybrid Communication System Using 5g Cellular And Ads-B For Uavs In High-Density Airspaces, Coulton Lee Karch
A Hybrid Communication System Using 5g Cellular And Ads-B For Uavs In High-Density Airspaces, Coulton Lee Karch
Theses and Dissertations
Robust communication is required to provide a safe airspace for the large numbers of unmanned aerial systems that are coming to the National Airspace System (NAS). This thesis explores methods for providing robust communication to large numbers of vehicles in the NAS. Automatic dependent surveillance-broadcast (ASD-B) is a transmission system that can transmit to and is currently required on all manned aircraft. Unfortunately, ADS-B suffers connectivity problems when supporting large numbers of unmanned aerial systems (UAS). The 5G Cellular protocol can support large numbers of UAS, but connectivity suffers with an increase in distance and interference. Using a 5G cellular …
Improving Wifi Sensor Network Security Through Unassociated Device Communication Using Wireless Latency Shift Keying, Jacob Edward Johnson
Improving Wifi Sensor Network Security Through Unassociated Device Communication Using Wireless Latency Shift Keying, Jacob Edward Johnson
Theses and Dissertations
IEEE 802.11 (WiFi) only has two modes of trust--complete trust or complete untrust. The lack of nuance leaves no room for sensors that a user does not fully trust, but wants to connect to their network, such as a WiFi sensor. Solutions exist, but they require advanced knowledge of network administration. We solve this problem by introducing a new way of modulating data in the latency of the network, called Latency Shift Keying. We use specific characteristics of the WiFi protocol to carefully control the latency of just one device on the network. We build a transmitter, receiver, and modulation …
Gps-Denied Localization Of Landing Evtol Aircraft, Aaron C. Brown
Gps-Denied Localization Of Landing Evtol Aircraft, Aaron C. Brown
Theses and Dissertations
This thesis presents a dedicated GPS-denied landing system designed for electric vertical takeoff and landing (eVTOL) aircraft. The system employs active fiducial light pattern localization (AFLPL), which provides highly accurate and reliable navigation during critical landing phases. AFLPL utilizes images of a constellation comprised of modulating infrared lights strategically positioned on the landing site, to determine the aircraft pose through the use of a perspective-n-point (PnP) solver. The AFLPL system underwent thorough development, enhancement, and implementation to address and demonstrate its potential in navigation and its inherent limitations. A proposed method addresses the limitations of AFLPL by using an extended …
Systems, Models, And Simulation For Novel Microfabrication Of Silicon Carbide And Metal Mesh Filters, Hunter R. J. Stevenson
Systems, Models, And Simulation For Novel Microfabrication Of Silicon Carbide And Metal Mesh Filters, Hunter R. J. Stevenson
Theses and Dissertations
As the boundaries of Moore's Law rapidly approach, research is increasingly turning to exotic materials and metamaterials to advance the capabilities of electronic and micromechanical systems. This thesis presents systems, models, and simulation techniques for novel microfabrication in the realms of silicon carbide (SiC) and metal mesh filters. Through the unification of femtosecond laser pulses, high numerical aperture (NA) objective lenses, and system power and motion control, a system capable of achieving arbitrary 3D features without line-of-sight with aspect ratios up to 109:1 in SiC is developed. Additionally, a model of a direct-write femtosecond-laser-ablation fabricated metal mesh filter (MMF) is …
Multifunctional And Moisture Tolerant Zinc-Based Mono- And Bi-Metallic Metal-Organic Framework (Mof) Thin Films, Emmanuel Agbata
Multifunctional And Moisture Tolerant Zinc-Based Mono- And Bi-Metallic Metal-Organic Framework (Mof) Thin Films, Emmanuel Agbata
Theses and Dissertations
Many applications of metal-organic frameworks (MOFs) are highly dependent on their structures. The type and consistency of structure inform their properties. Zinc-based MOFs are applicable in different fields because of the low toxicity of zinc materials and are therefore also useful for catalysis. While MOF-5, a zinc-based MOF with carboxylate linkers is moisture intolerant, a variant of this is moisture tolerant. The introduction of a nitrogen-based linker in the zinc MOF which renders the structure moisture-tolerant. This material has not been explored as much, despite its multifunctional properties. Furthermore, the growth of Zn-based bimetallics of this MOF has not yet …
Modified Coulomb Approach For Squat Silos, Mitchell Cade South
Modified Coulomb Approach For Squat Silos, Mitchell Cade South
Theses and Dissertations
Traditional methods for calculating lateral pressures in silos, such as Janssen's Method and Coulomb's Method, have limitations due to the underlying assumptions of each methodology. This research investigates an approach which adapts Coulomb's Method to account for the cylindrical geometry of silos. The Silo Wedge Method (SWM) distinguishes between two cases based on the aspect ratio (height/diameter) of the silo. Comparative analysis reveals that the SWM accurately matches Coulomb's Method for linear retaining walls when the silo aspect ratio approaches zero. As the aspect ratio increases above 0.25, the SWM exhibits behavior similar to Janssen's Method. This suggests a potential …
Sustainability In Civil And Construction Engineering, Connotations, Paradigms, And Perceptions, Xiaomei Wang
Sustainability In Civil And Construction Engineering, Connotations, Paradigms, And Perceptions, Xiaomei Wang
Theses and Dissertations
Over the last four decades, the concept of sustainability has evolved significantly, gaining prominence since the Brundtland report in 1987. Operating at the intersection of built and natural environments, Civil and Construction Engineering (CCE) projects and designs inherently impact the natural surroundings. In this context, the concept of sustainability serves not only as a guiding principle to mitigate depletion but also as a pathway to achieving balance among diverse societal needs so every creature can survive and thrive. Despite considerable efforts in this domain, the definition of sustainability within the CCE discipline remains elusive. Paradoxically, the popularity and vagueness of …
Development Of Zr(Iv) Mof-Enabled Nerve Agent Electrochemical Hydrolysis Sensors, Tyler James Marlar
Development Of Zr(Iv) Mof-Enabled Nerve Agent Electrochemical Hydrolysis Sensors, Tyler James Marlar
Theses and Dissertations
Nerve agents are acetylcholinesterase inhibitors and among the most toxic chemical warfare agents ever synthesized. Detection of these chemicals is critical for the protection of populations and strategic resources. G-series nerve agents are volatile compounds. V-series nerve agents are persistent phosphonothioate compounds. Persistent nerve agents do not readily volatilize and can contaminate environmental resources for extended periods. While nerve agents are inherently non-electroactive, they can be hydrolyzed to electroactive products compatible with electrochemical sensing. Zr(IV) MOFs are next-generation nanoporous materials, which have been shown to rapidly catalyze nerve agent hydrolysis. In this work, the catalytic processes of MOF-808, a specific …
Developing An Artistic Self In Preservice Elementary Teachers: A Studio Art Curriculum To Promote Art Integration, Karilee D. Park
Developing An Artistic Self In Preservice Elementary Teachers: A Studio Art Curriculum To Promote Art Integration, Karilee D. Park
Theses and Dissertations
With the continual use of standardized testing, teaching art in schools, particularly elementary schools, often falls to generalist teachers with little to no experience in art. While art can be integrated into daily curriculum for deeper and lasting learning, without the proper training or support, generalist teachers are left to implement art as they encountered it in the past, if at all. Artistic anxiety and culturally misappropriated artistic experiences result in the arts being used inefficiently or avoided completely. Creating a curriculum for preservice elementary generalist teachers, I explored art integration through developing artistic confidence, skill, and identity for 16 …
General Non-Destructive Evaluation For Friction Stir Welding, Johnathon Bryce Hunt
General Non-Destructive Evaluation For Friction Stir Welding, Johnathon Bryce Hunt
Theses and Dissertations
Friction stir welding (FSW) is an advantageous solid state joining method for many different engineering designs. It was invented in 1991 by TWI and since that time a tremendous amount of research has been executed to understand and implement FSW in a myriad of materials in numerous industries such as aerospace, ship building, train, automotive, energy, agriculture and others. Most industries have strict weld inspection processes to validate a weld before it is put into service. One of the main weld characteristics that is measured is the size of any subsurface volumetric voids. The current standard to test friction stir …
From Pumps And Pipes To Data And Discovery: Unifying A New Division, Jeremy Myntti, Megan Mcmillan
From Pumps And Pipes To Data And Discovery: Unifying A New Division, Jeremy Myntti, Megan Mcmillan
Faculty Publications
A reorganization of the Brigham Young University Library in 2020 brought many changes to the library, including the formation of the Metadata and Information Technology (MIT) Division. This new division needed to define a vision for itself, encourage a sense of unity among its employees, and foster collaboration among those employees. This article details how the MIT Division created a Data and Discovery initiative based on the Pumps and Pipes collaboration model, a model which brings seemingly unrelated industries together to discover solutions to their respective challenges by exploring “their neighbor’s toolbox” (Pumps and Pipes, n.d., “What We Do”). Here …
Multiscale Characterization Of Dislocation Development During Cyclic Bending Under Tension In Commercially Pure Titanium, Nathan R. Miller
Multiscale Characterization Of Dislocation Development During Cyclic Bending Under Tension In Commercially Pure Titanium, Nathan R. Miller
Theses and Dissertations
Continuous bending under tension (CBT) has been shown to increase room temperature elongation-to-failure (ETF) in various sheet metals past that of simple tension (ST). In commercially pure titanium (CP-Ti) Grade 4, up to 3x extended elongation over ST has been achieved. A greater understanding of deformation mechanisms in CBT would allow for its elongation-enhancing effects to be more fully exploited in HCP and other metals, creating potential for new forming strategies. While most of the extended ETF has been attributed to delayed localization via incremental deformation inherent to the CBT process, together with compressive stabilization and relaxation of mechanical strain …
Validating Boyness: How Art Education Allows Male Adolescent Students A Space For Authenticity, Vulnerability, Empathy, And Connection, Stephanie Behlke-Mcfarland
Validating Boyness: How Art Education Allows Male Adolescent Students A Space For Authenticity, Vulnerability, Empathy, And Connection, Stephanie Behlke-Mcfarland
Theses and Dissertations
This thesis examines societal norms and unwritten rules for boys as they mature. It is hypothesized that most boys deal with emotional suppression or dissociation in varying degrees of severity due to traumas during their developmental years. This dissociation creates an inability to express their own emotions adequately and therefore affects their ability to empathize with others. A lack of vulnerability may also be a common challenge among boys society still considers vulnerability weakness. This pattern continues into adulthood and is then perpetuated through posterity and future generations. This thesis explores through a qualitative case study how using art integration …
Still Life Happens, Mary Ann Crabtree
Still Life Happens, Mary Ann Crabtree
Theses and Dissertations
After dedicating over two years to pursuing an MFA degree focused on ceramics and sculpture, I find myself transported back to a familiar setting from my past: a tableau reminiscent of what remained in the dining space after four young children finished a meal and exited the room. Revisiting the scene recalls happy times despite the disorder. What helped maintain my sanity during the relentless repetition of the every-day-long task was the realization that every day, innocents are learning to become aware of the world around them. For my thesis exhibition, I created a tableau as a loud reminder of …
Supplementary Data For Potential For Climate-Based Financing Of Watershed Management To Restore Streams And Improve Water Quality Following A Wildfire: A Case Study Of The Provo River Watershed, Braxton W. Porter, Robert B. Sowby
Supplementary Data For Potential For Climate-Based Financing Of Watershed Management To Restore Streams And Improve Water Quality Following A Wildfire: A Case Study Of The Provo River Watershed, Braxton W. Porter, Robert B. Sowby
ScholarsArchive Data
Data presented in Thesis Dissertation "Potential for Climate-Based Financing of Watershed Management to Restore Streams and Improve Water Quality Following a Wildfire: A Case Study of the Provo River Watershed". Provides all inputs, results, and code used in the presented analysis.
Application Of High-Deflection Strain Gauges To Characterize Spinal-Motion Phenotypes Among Patients With Clbp, Spencer Alan Baker
Application Of High-Deflection Strain Gauges To Characterize Spinal-Motion Phenotypes Among Patients With Clbp, Spencer Alan Baker
Theses and Dissertations
Chronic low back pain (CLBP) is a nonspecific and persistent ailment that entails many physiological, psychological, social, and economic consequences for individuals and societies. Although there is a plethora of treatments available to treat CLBP, each treatment has varying efficacy for different patients, and it is currently unknown how to best link patients to their ideal treatment. However, it is known that biopsychosocial influences associated with CLBP affect the way that we move. It has been hypothesized that identifying phenotypes of spinal motion could facilitate an objective and repeatable method of determining the optimal treatment for each patient. The objective …
Time-Dependent Strain-Resistance Relationships In Silicone Nanocomposite Sensors, Alex Mikal Wonnacott
Time-Dependent Strain-Resistance Relationships In Silicone Nanocomposite Sensors, Alex Mikal Wonnacott
Theses and Dissertations
Flexible high-deflection strain gauges have been demonstrated as cost-effective and accessible sensors for capturing human biomechanical deformations. However, the interpretation of these sensors is notably more complex compared to conventional strain gauges, partially owing to the viscoelastic nature of the strain gauges. On top of the non-linear viscoelastic behavior, dynamic resistance response is even more difficult to capture due to spikes in resistance during strain changes. This research examines the relationships between stress, strain, and resistance in nanocomposite sensors during dynamic strain situations. Under the assumption that both macroscopic stress and resistance are governed by microscopic stress concentrations at the …
High Data Rate Signal Processing Architectures And Compilation Strategies For Scalable, Multi-Gigabit Digital Systems, Daniel Alexander Nybo
High Data Rate Signal Processing Architectures And Compilation Strategies For Scalable, Multi-Gigabit Digital Systems, Daniel Alexander Nybo
Theses and Dissertations
In this study we present a high-performance computing architecture and hardware acceleration strategy for a heterogeneous multi-gigabit computing system. The system architecture integrates a BeeGFS distributed file system, capable of achieving 80 Gbps of sustained write throughput across five nodes, essential for managing the high data volumes generated by a 25 high performance computer (HPC) compute cluster. To ensure operational efficiency and scalability, the tasks performed on the Linux compute cluster consisting of 30 nodes are automated using Ansible, facilitating seamless deployment, management, and updates. We present compilation strategies for a hardware accelerated Polyphase Filter Bank (PFB) channelization routine optimized …
Comics About Organs: Social Support And Graphic Medicine In The Awkward Yeti, Jacob Gibb
Comics About Organs: Social Support And Graphic Medicine In The Awkward Yeti, Jacob Gibb
Theses and Dissertations
Comic strips have always been a medium for more than humor. Many comic strips published on social media sites address mental health issues. Despite their popularity, the field of graphic medicine, which examines the intersection of health care and comics, has seen little to no examination of how these comics function on social media. Utilizing the popular comic The Awkward Yeti, this research examines how the rhetorical devices of comics make them an ideal medium for communicating about mental health issues and providing social support to social media users. This study conducts a content analysis of 15 Instagram posts from …
Can Podcasts Reduce Affective Polarization By Combating Contextomy Via Long-Form Discussions?, Luke D. Hartvigsen
Can Podcasts Reduce Affective Polarization By Combating Contextomy Via Long-Form Discussions?, Luke D. Hartvigsen
Theses and Dissertations
There is a growing concern regarding political polarization in the United States, most notably the phenomenon of affective polarization, which is when polarization increases negative feelings toward those who differ politically. The current dissertation project sought to address this issue by testing a media intervention using podcasts. Podcasts allow speakers to talk for hours uninterrupted through long-form discussions, whereas other media often edit political discussions to the point of contextomy (editing and framing a quote out of its proper context). Podcasts were created for this dissertation which differed on the political message of the podcast guest (conservative vs. liberal), and …
Phase Separation And Morphology Evolution Of Multiphase Polymeric Systems, Rami Naser Fahmi Alhasan
Phase Separation And Morphology Evolution Of Multiphase Polymeric Systems, Rami Naser Fahmi Alhasan
Theses and Dissertations
This dissertation explores the intricate world of soft materials through a powerful synergy of theoretical frameworks and cutting-edge computational simulations. The research investigates how processing history, thermodynamics, and kinetics intertwine to influence the behavior and manipulation of these materials. A cornerstone of the work is the establishment of a generalized Gibbs--Duhem relationship, ensuring thermodynamic consistency within the employed models. This not only clarifies existing ambiguities but also lays the groundwork for future models with a robust thermodynamic foundation. This dissertation explores the influence of processing history on soft materials through three in-depth case studies, unveiling the critical role of processing …
"Great Injustice In American Literature": African American Girlhood In Black And White Authored Children's Publications, 1887-1920, Becca Driggs
Undergraduate Honors Theses
This thesis examines the role of African American girls in creating and dismantling nineteenth-century race myths through a comparison of publications in black and white authored presses. Fictional stories published in St. Nicholas, the most popular turn-of-the-century children’s magazine, reveal that white authors, specifically Southern women, intentionally crafted narratives demeaning African American girls to cement a national racial hierarchy. Their work indoctrinated white children in racism and undermined African American legitimacy in the decades following the Civil War and Reconstruction. Concurrently, black authors recognized these attacks and in their press explored the lived experiences of African American girls to counter …
Combined Radiation And Convection In Developing Flow In A Parallel Plate Channel With Real Gas Behavior, Kyle Davis Pulsipher
Combined Radiation And Convection In Developing Flow In A Parallel Plate Channel With Real Gas Behavior, Kyle Davis Pulsipher
Theses and Dissertations
The laminar, thermally developing flow of gases in a two-dimensional parallel plate channel is studied here. Using computational fluid dynamics (CFD), the combined effects of convection and real gas radiation are explored. Gas mixtures composed of H2O, CO2, and N2 are considered. To account for radiation in the participating medium, the Spectral Line Weighted-sum-of-gray-gases model is used. The model formulation, verification, and validation are provided through published articles written by the primary author. The predictions made for the case of combined convection and radiation are compared to the solution for the classical pure convection case, known as the Graetz solution. …
Quantifying And Characterizing The Behavior Of Dissolved And Suspended Icp-Oes Detectible Elements In Utah Lake, Rachel Ann Valek
Quantifying And Characterizing The Behavior Of Dissolved And Suspended Icp-Oes Detectible Elements In Utah Lake, Rachel Ann Valek
Theses and Dissertations
For Utah Lake in Utah, USA, we analyzed a uniquely comprehensive and longitudinal water quality dataset that extended over two summer sampling seasons. We measured 61 parameters using Inductively Coupled Plasma Optical Emission Spectrometry (ICP-OES), YSI ProDSS water sondes, and laboratory procedures to quantify and characterize dissolved and suspended behavior of trace elements in Utah Lake. We analyzed the data using principal component analysis (PCA) and multidimensional scaling (MDS) to understand the lake geochemistry and inform Utah Lake management decisions regarding nutrients and algal blooms. We found that 1) sediments rich in phosphorus (P) act as a source for bioavailable …
Investigating Which Muscles Are Most Responsible For Tremor Through Both Experimental Data And Simulation, Daniel Benjamin Free
Investigating Which Muscles Are Most Responsible For Tremor Through Both Experimental Data And Simulation, Daniel Benjamin Free
Theses and Dissertations
Tremor affects millions of people and many patients desire alternative treatment options to medication or neural surgery. Peripheral suppression techniques are gaining greater use, but are currently applied in a trial-and-error method. To optimize these techniques, the muscles most responsible for an individual patient's tremor need to be identified. In this dissertation, I explored two parallel paths that both could aid in identifying muscles responsible for tremor. The first method utilizies measured data and a technique (coherence) that quantifies the frequency dependent correlation between two signals. Using coherence to identify muscles contributing to tremor requires at least two parts: an …
Remote Sensing Of Residential Landscape Irrigation In Weber County, Utah, Annelise Marie Capener
Remote Sensing Of Residential Landscape Irrigation In Weber County, Utah, Annelise Marie Capener
Theses and Dissertations
Irrigation of residential properties in urban settings is typified by small and irregular areas, many untrained water users, limited end-use metering, and differing groundcover in contrast to agricultural settings. This makes analyzing irrigation patterns to promote efficient water use challenging. Analysis of Irrigation by Remote Sensing (AIRS) combines multispectral aerial imagery, evapotranspiration data, and ground-truthed measurements to overcome these challenges. We demonstrate the application of AIRS on eight neighborhoods in West Haven, Utah, using 0.6 m National Agriculture Imagery Program (NAIP) and 0.07 m drone imagery, reference evapotranspiration (ET), and water meter data from Weber Basin Water Conservancy District (WBWCD). …