Digital Commons Network^™

Additive Manufacturing Of Microsystems And Medical Devices, Philippe Passeraub

BYU Research Development Office Research Networking Conference

Pad printing as a 2D additive manufacturing process, Microsystems design and manufacturing, Open-source medical devices, Open-source instruments

Laser Assisted Machining, Stephen Schultz

BYU Research Development Office Research Networking Conference

Lasar ablation, micro-patterning, silicon carbide patterning

Civilizational Security: Why The Russian Invasion Of Ukraine Shows That ‘National Security’ Is Not Enough To Understand Geopolitics, Greg (Grzegorz) Lewicki

Comparative Civilizations Review

This paper argues that the idea of “national security” is sometimes overwritten by “civilizational security” in security-related considerations. Civilizational security, as understood in this paper, refers to a country's security stemming from its belonging to a cultural zone or a civilization. The author clarifies the terms “a civilization,” “civilizational identity,” and “civilizational security.” Citing the examples of Poland, Ukraine, and Russia when considering the parameter of civilizational security allows us to better analyze and predict some processes, including geopolitical dilemmas and civilizational trends. It is argued that prior to the 2022 invasion of Ukraine, Russia misunderstood its own civilizational security …

Book Review: Philip Ball. The Water Kingdom: A Secret History Of China, Robert Bedeski

Comparative Civilizations Review

Over centuries scores of sinologists have sought to define the essence of China. Philip Ball addresses and goes well beyond the materialist paradigm of Karl Wittfogel’s hydraulic thesis, which described the role of water management in China as stimulating state development. In his theory, government emerged as the central institution to manage transportation, flood control and irrigation. Ball also sees water management as critical in Chinese civilization and injects his description with spiritual and moral content, drawing on poetry, art, biography and extensive reference to historical events. His book is an exploration of the role of water in China’s culture, …

Accurate And Efficient Modeling For Magnetic Resonance-Guided Focused Ultrasound Treatment Planning, Christopher R. Dillon

BYU Research Development Office Research Networking Conference

Focused ultrasound, cancer, computational modeling, deep learning

Tribology And Biomaterials Research Lab, Quentin Allen

BYU Research Development Office Research Networking Conference

Friction, wear, lubrication, biocompatible materials, advanced manufacturing

Team Clot, Dario Mizrachi

BYU Research Development Office Research Networking Conference

Protein Engineering (Membrane proteins)
Transient modulation of tight junction for drug delivery

Global Security In The Third Millennium Of The Common Era, Michael Andregg

Comparative Civilizations Review

The primary purpose of this short essay is to catalyze discussion among security professionals about how perspectives on ‘global security’ and ‘wise civilizations’ might affect military affairs during a time of great, interdisciplinary stresses that impact everyone on earth today.

Global civilization faces two main existential threats this century. The first is a quick death from general thermonuclear war or release of other Weapons of Mass Destruction (WMD) like exotic, genetically engineered biological weapons. The second is a slow death from incremental destruction of the living system that supports all civilizations, wise or unwise, by mechanisms like deforestation, desertification, climate …

Monitoring Wise Civilization By Creating An Index, Andrew Targowski

Comparative Civilizations Review

The Wise Civilization Index will assess how wise we are in developing and living in a sustainable civilization.

Recently, people have started to worry about the state of the climate. This has been reflected in the finding that the climate temperature should be kept to a growth of below two degrees Celsius by 2100 to save our species from a slow death (The Paris Agreement of 2015). After all, raising the human body temperature by two degrees threatens illness and even death by four degrees. The same (relatively) can be done with Earth. However, apart from the climate, the problem …

Buber The Radical Egalitarian And Buber And Psychology, Kenneth Feigenbaum

Comparative Civilizations Review

My first iteration for this paper was to present Martin Buber in the context of radical politics in Germany and to focus upon his relationship to the anarchist Gustav Landauer. After a brief search, I found too few sources that were easily accessible from here in the United States, so as part of this presentation I situate Buber in the radical politics extant mostly during his time in Germany and in Berlin. I focus here on Buber’s psychology but include several intellectual side trips visiting aspects of Buber’s philosophy and his politics. I cannot separate them in discussing Buber and …

Comparison Of Compact Very High Frequency (Vhf) Antennas For Small Airborne Ground Penetrating Radar, Tayler Austen Livingston

Theses and Dissertations

UHF bands because more penetration can be achieved at low frequencies. Consequently, large antennas are required, which limits their use for small airborne applications. This thesis explores various GPR antenna designs for a bi-static system that are at least operational from 225 MHz to 255 MHz and suitable for small airborne applications. The 3D electromagnetic simulation software Ansys high-frequency structure simulator (HFSS) was used to simulate various sizes of strip dipole, triangular bowtie, half elliptical bowtie, and elliptical bowtie antennas. Several physical models were constructed to validate the return loss simulation results. Additionally, simulation data is included for a wire …

Liposomes For The Treatment Of Brain Cancer—A Review, Richu Raju, Waad H. Abuwatfa, William G. Pitt, Ghaleb A. Husseini

Faculty Publications

Due to their biocompatibility, non-toxicity, and surface-conjugation capabilities, liposomes are effective nanocarriers that can encapsulate chemotherapeutic drugs and facilitate targeted delivery across the blood–brain barrier (BBB). Additionally, strategies have been explored to synthesize liposomes that respond to internal and/or external stimuli to release their payload controllably. Although research into liposomes for brain cancer treatment is still in its infancy, these systems have great potential to fundamentally change the drug delivery landscape. This review paper attempts to consolidate relevant literature regarding the delivery to the brain using nanocarriers, particularly liposomes. The paper first briefly explains conventional treatment modalities for cancer, followed …

A Review On Membrane Fouling Prediction Using Artificial Neural Networks (Anns), Waad H. Abuwatfa, Nour Al Sawaftah, Naif Darwish, William G. Pitt, Ghaleb A. Husseini

Faculty Publications

Membrane fouling is a major hurdle to effective pressure-driven membrane processes, such as microfiltration (MF), ultrafiltration (UF), nanofiltration (NF), and reverse osmosis (RO). Fouling refers to the accumulation of particles, organic and inorganic matter, and microbial cells on the membrane’s external and internal surface, which reduces the permeate flux and increases the needed transmembrane pressure. Various factors affect membrane fouling, including feed water quality, membrane characteristics, operating conditions, and cleaning protocols. Several models have been developed to predict membrane fouling in pressure-driven processes. These models can be divided into traditional empirical, mechanistic, and artificial intelligence (AI)-based models. Artificial neural networks …

Heat Transfer To Rolling Or Sliding Drops On Inclined Heated Superhydrophobic Surfaces, Joseph Merkley Furner

Theses and Dissertations

This thesis examines the time resolved heat transfer to drops rolling or sliding along inclined, subcritical heated non-wetting surfaces. Results were experimentally obtained using IR imaging for a smooth hydrophobic surface and post as well as rib structured superhydrophobic surfaces of varying solid fraction (f_s = 0.06 - 0.5). Tests were performed at varying inclination angle (α = 10, 15, 20, and 25°), drop volume (12, 20, 30, and 40 μL), and surface temperature (T_w = 50, 65, and 80 °C). Rib structured superhydrophobic surfaces were explored for drops moving parallel and perpendicular to the rib structures. The findings indicate …

Impact Of Mental Wellness Courses On Student Mental Health, Joshua W. Pinson

Theses and Dissertations

A large portion of college students have been diagnosed with a mental health disorder and that number is climbing. Most of these students are not receiving treatment, and university counseling centers are unable to meet the increasing demands. The purpose of this study is to fill gaps in this literature by doing an early analysis of a larger, multi-year quasi-experimental study to assess the impact of college mental wellness courses on self-health measures and mental health resource utilization rates. The validated instruments used for evaluating self-health measures and mental health resource utilization were the Physical Activity Vital Sign (PAVS) Counseling …

Radar Processing Techniques For Using The Limesdr Mini As A Short-Range Lfm Radar, Jacob Scott Stratford

Theses and Dissertations

Drone-mounted ground penetrating radar (GPR) has the capability to investigate terrain that is inaccessible or hazardous to humans. A linear frequency-modulated (LFM) radar with the potential for GPR applications is described based on the LimeSDR Mini software defined radio (SDR). Challenges of the LimeSDR Mini radar include the SDR's lack of support for transmitter-receiver synchronization and high bleedthrough leakage. These issues are overcome through corrective software processing techniques including deconvolution of the SDR's system impulse response and digital feed-through nulling. Feed-through nulling is effective at reducing bleedthrough leakage, achieving a 26 dB reduction in power. Although high noise can confound …

Did Covid Change Everything Or Nothing At All? Canadian Family Life During The Covid-19 Pandemic, Carlee Guenther Dynes

Theses and Dissertations

In March of 2020, Canada, along with the rest of the world, declared the COVID-19 pandemic a national emergency and responded with society-wide lockdowns, granting exceptions only for essential workers. Canadians across all demographic categories were significantly impacted, and many parents of children under 18 faced the difficult task of caring for their children while simultaneously meeting their work obligations. Using novel in-depth interview data from 30 Canadian parents (in 15 couples) collected between April 2022 and May 2023, I explore three main changes to family life resulting from the COVID-19 pandemic: expanded family-friendly work practices, increased time with nuclear …

Microfabrication Of Silicon Carbide And Metallized Polymers Using A Femtosecond Laser, Joseph Taylor Eddy

Theses and Dissertations

Femtosecond lasers deliver a high peak concentration of optical power while maintaining low average power. With an accompanying optical setup, this power can be focused and used for high-precision fabrication of metallized polymers via ablation, creating conductive structures on a thin film. These lasers can also be harnessed in tandem with hydrofluoric acid and the two-photon absorption principle to selectively etch silicon carbide, a very durable and machining-resistant semiconductor with desirable properties. This thesis presents improvements made to the Laser-Assisted Chemical Etching (LACE) technique and the ablation system. ��, the two- photon absorption coefficient of silicon carbide, is measured and …

Full Issue

Insights: The Newsletter of the Neal A. Maxwell Institute for Religious Scholarship

No abstract provided.

Evangelical Scholars Recognize Lds Scholarship

Insights: The Newsletter of the Neal A. Maxwell Institute for Religious Scholarship

A recent article by two evangelical scholars will be of interest to FARMS subscribers. "Mormon Scholarship, Apologetics, and Evangelical Neglect: Losing the Battle and Not Knowing It?" evaluates contemporary Latter-day Saint scholarship and finds it erudite, sophisticated, and rigorous, providing a robust defense of the Mormon faith-and thus meriting serious attention from the evangelical community.

Review Looks At Recent Books On Ancient America, Benjamin's Speech, Temple Symbolism

Insights: The Newsletter of the Neal A. Maxwell Institute for Religious Scholarship

The latest issue of the FARMS Review of Books (volume 11, number 1) commends recent studies on ancient America, Benjamin's speech, and temple symbolism. It also features two extended articles that are notable contributions in their own rightone complementing the work of Hugh Nibley, the other countering anti-Mormon criticisms.

Relationships Between Running Biomechanics And Femoral Articular Cartilage Thickness And Composition In Anterior Cruciate Ligament Reconstruction Patients, Hyunwook Lee

Theses and Dissertations

Background: Patients with anterior cruciate ligament reconstruction (ACLR) have demonstrated morphological and compositional changes in femoral articular cartilage. However, it is unclear how running biomechanics are associated with femoral cartilage thickness and composition for both ACLR patients and controls. Objectives: (1) to compare measures of femoral cartilage thickness and composition between ACLR patients and matched non-ACLR controls at resting, (2) to investigate how 30 minutes of running influences the aforementioned measures for ACLR patients and controls, and (3) to investigate relationships between running biomechanics and knee cartilage thickness and composition in ACLR patients and controls. Methods: Twenty ACLR patients (age: …

Thermal Performance Of Thin-Shell Concrete Dome Structures, Daira Sofia Velasco Vega

Undergraduate Honors Theses

The objective of this research is to evaluate an insulated concrete thin-shell dome structure for thermal flux with various depths of soil coverings. Computational thermal analysis is performed to model temperature fluctuations inside a representative section of an experimental concrete dome structure during all four seasons of northern Utah. The results are compared against the baseline of a traditional insulated wood-framed building envelope and indicate that thermal flux is significantly reduced in the earth-sheltered concrete dome structure with foam on the outside of the concrete. The addition of soil dampens the amplitude of the flux and increases the time lag …

Pectus Carinatum Patient Brace Data, Brandon Scott Sargent, Katie Varela, Dennis Eggett, Emily Mckenna, Christina Bates, Rebeccah Brown, Victor Garcia, Larry Howell

ScholarsArchive Data

Data for the journal article "Modeling of the chest wall response to prolonged bracing in pectus carinatum" submitted to PLOS One in 2023 by Sargent et al. The data is a recording of prescribed brace pressures, patient reported hours of wear, and clinician recorded pressure to correct through the treatment process. The data file was compiled via Microsoft Excel as part of the Microsoft 365 Office Suite. The top row of each sheet within the file is the header line with the data in all subsequent rows. The journal article contains an in-depth definition of the variables used in the …

A Multi-Scale Method For Combined Design And Dispatch Optimization Of Nuclear Hybrid Energy Systems Including Storage, Daniel Hill, Dawson Mccrea, An Ho, Matthew Memmott, Kody Powell, John Hedengren

Faculty Publications

Reliable, carbon-free power generation is increasing in importance. Nuclear-renewable hybrid energy systems (NHES) are a potential solution for current generation challenges, but design and dispatch optimization for these systems remains challenging particularly when stochastic effects, long time horizons and nonlinear modeling are needed. This work presents a multi-scale method for combining the design and dispatch optimization problems for nonlinear NHES over long time horizons. Rather than treating the entire horizon as a single optimization problem, a large number of combined optimization problems are solved for shorter samples of the horizon resulting in distributions of optimal capacities for each of the …

Friction And Heat Transfer Modeling Of The Tool And Workpiece Interface In Friction Stir Welding Of Aa 6061-T6 For Improved Simulation Accuracy, Ryan Melander

Theses and Dissertations

Friction stir welding (FSW) is a solid-state joining process that offers advantages over traditional fusion welding. The amount of heat generated during a FSW process greatly influences the final properties of the weld. The heat is generated through two main mechanisms: friction and plastic deformation, with friction being the larger contributor in a FSW process. There is a need to develop better predictive models of the heat generation and heat transfer in FSW. Almost all models seen in the literature validate temperature predictions on only one side of the tool/workpiece interface, thus ignoring possible inaccuracy that comes from incorrect partitioning …

Integration Of Insoluble And Soluble Dopants Into Steel Using Laser Powder Bed Fusion, Mckay Goodman Sperry

Theses and Dissertations

Laser Powder Bed Fusion (LPBF) is an Additive Manufacturing (AM) method whereby complex parts can be built to near net geometry in an automated environment. Parts formed by LPBF have excellent properties and require little post-processing. While LPBF allows for creative designs to reduce weight and part count by integrating sub-components of assemblies, designers are limited to one material within any LPBF print. Although various materials can be used in LPBF, metals are of special interest to many industrial customers due to their high strength and toughness. The metals commonly used for LPBF include iron, aluminum, and titanium alloys. These …

Acoustic Directivity: Advances In Acoustic Center Localization, Measurement Optimization, Directional Modeling, And Sound Power Spectral Estimation, Samuel David Bellows

Theses and Dissertations

Sound radiation from an acoustic source typically exhibits directional behavior, as is the case for the human voice, musical instruments, and loudspeakers, to name just a few. The necessity of directional data for many applications, such as sound source modeling, microphone placement, room acoustical design, and auralization, motivates directivity measurements. However, these measurements require careful understanding and implementation to produce the most meaningful results. Accordingly, this dissertation addresses several topics relevant to directivity theory, measurement, processing, and application. It first expands and amends previously published concepts of an acoustic source center and demonstrates the close relationship between the center and …

On Algorithmic Design Methodologies, Heterogenous Rfsoc/Gpu Beamformers, And Cryogenic Antenna Efficiency Evaluation For Phased Array Receivers In Radio Astronomy, Mitchell C. Burnett

Theses and Dissertations

Modern radio astronomy’s demand for high sensitivity and wide fields of view is met through innovations that reduce receiver system noise temperatures and integrate technology supporting parallel processing and larger instantaneous bandwidths. The advanced L-band phased array camera for astronomy (ALPACA) is a fully cryogenic 69 dual-polarized dipole PAF and digital beamformer back end for the Green Bank Telescope. This instrument will form 40 dual-polarized beams yielding a 0.35 sq. deg field of view on the sky with a 305.2 MHz processing bandwidth. The target system noise temperature is 27 K. A structured technique to map critically sampled and oversampled …

Detecting Lumbar Muscle Fatigue Using Nanocomposite Strain Gauges, Darci Ann Billmire

Theses and Dissertations

Introduction: Muscle fatigue can contribute to acute flare-ups of lower back pain with associated consequences such as pain, disability, lost work time, increased healthcare utilization, and increased opioid use and potential abuse. The SPINE Sense system is a wearable device with 16 high deflection nanocomposite strain gauge sensors on kinesiology tape which is adhered to the skin of the lower back. This device is used to correlate lumbar skin strains with the motion of the lumbar vertebrae and to phenotype lumbar spine motion. In this work it was hypothesized that the SPINE Sense device can be used to detect differences …