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Articles 331 - 360 of 11643
Full-Text Articles in Entire DC Network
Untethered Isoperimetric Robotic Truss For Lunar Applications, Mihai Stanciu, Spencer Stowell, Isaac Weaver, Adam Rose, Chris Paul, James Wade, Ashleigh Cerven, Annie O'Bryan, Brian Bodily, Logan Yang, Nathan Usevitch
Untethered Isoperimetric Robotic Truss For Lunar Applications, Mihai Stanciu, Spencer Stowell, Isaac Weaver, Adam Rose, Chris Paul, James Wade, Ashleigh Cerven, Annie O'Bryan, Brian Bodily, Logan Yang, Nathan Usevitch
Faculty Publications
We introduce a robotic system designed to function as a lightweight, modular, and reconfigurable structure on the Moon. This robust system consists of truss-like robotic triangles, each formed by a continuous inflated fabric tube routed through two robotic roller units and a connecting unit. When deflated, these triangles can be compacted to roughly the volume of the roller units, offering an advantageous stowed-to-deployed volume ratio of 1 to 6.24. Upon inflation, the roller units pinch the tubes, creating corners by reducing the bending stiffness of the tube. Once fully deployed, electric motors move the robotic roller units along the tube, …
Initial Scripts And Final Code Data For E2021-260 Study 1, Undergraduates' Access And Usability Of The Contentdm Interface And Irb2022-263 Study 2, Faculty Needs Assessment Of The Library Dam System, Lindsey Memory, Rebecca A. Wiederhold, Abby Beazer, Greg Seppi, Nicole Lewis, Elizabeth Smart, Brent Ellingson
Initial Scripts And Final Code Data For E2021-260 Study 1, Undergraduates' Access And Usability Of The Contentdm Interface And Irb2022-263 Study 2, Faculty Needs Assessment Of The Library Dam System, Lindsey Memory, Rebecca A. Wiederhold, Abby Beazer, Greg Seppi, Nicole Lewis, Elizabeth Smart, Brent Ellingson
ScholarsArchive Data
Included are the initial scripts and the final qualitative thematic codes (created using the grounded method) of two IRB studies completed by the BYU Library's Digital Collections Systems Management Committee. Study 1, "Undergraduates' Access and Usability of the CONTENTdm Interface" (BYU IRB E2021-260) administered a usability test and an oral survey/interview, resulting in two datasets: codes from video observational data of undergraduate subjects using the library's digital asset management system, CONTENTdm, to complete ten pre-set usability tasks, and also codes from open-ended interview questions about those undergraduate students' perceived effectiveness in the system, and their preferences in a library digital …
Improvement Of Hanford Waste Vitrification Algorithms With Machine Learning, Uncertainty Quantification, And Gradient-Based Optimization, Lagrande L. Gunnell
Improvement Of Hanford Waste Vitrification Algorithms With Machine Learning, Uncertainty Quantification, And Gradient-Based Optimization, Lagrande L. Gunnell
Theses and Dissertations
Over 200 million liters of nuclear waste is stored in tank farms in Hanford, Washington, USA. An ongoing effort to immobilize non-solid nuclear waste is through waste vitrification, where waste is mixed and melted with glass-forming chemicals (GFCs) to form a waste glass. Algorithms to determine the ideal mixing recipes are formalized as constrained optimization problems to maximize waste loading in the glass product, with constraints on several properties of the glass melt and final product. These properties are on the glass melt, such as viscosity, electrical conductivity, and corrosion rates, as well as the final glass product, such as …
Ai-Enhanced Flipped Classroom Approach For Chinese Vocabulary And Grammar Learning, Haotian Ye
Ai-Enhanced Flipped Classroom Approach For Chinese Vocabulary And Grammar Learning, Haotian Ye
Theses and Dissertations
This study examines the effectiveness of ChatGPT-4 in enhancing L2 Chinese learners' vocabulary and grammar acquisition within a flipped classroom setting, focusing on its impact on learning outcomes, student motivation, and associated challenges. Conducted over 10 weeks, the study involved 19 native English speakers enrolled in a third-year Chinese course at a U.S. university. The experimental group (n = 11) used ChatGPT to self-study six target words and five grammar structures before attending Tuesday and Thursday sessions, while the control group (n = 8) followed a textbook-based approach. Participants completed in-class vocabulary and grammar quizzes twice a week, three journal …
Hybrid Bermudagrass Drought Tolerance In A Cool-Season Climate, Ashley J. Beazer
Hybrid Bermudagrass Drought Tolerance In A Cool-Season Climate, Ashley J. Beazer
Theses and Dissertations
Kentucky bluegrass (Poa pratensis L.) (KBG) is the most commonly grown cool-season C3 turfgrass. However, as global temperatures rise, KBG struggles to tolerate higher temperatures, leading to increased irrigation demands--a growing concern in arid and semi-arid regions facing escalating drought conditions. In contrast, hybrid bermudagrass (HBG; Cynodon dactylon [L.] Pers. x Cynodon transvaalensis Burtt Davy), a warm-season C4 grass, has demonstrated promising adaptability in traditionally cool-season climates. Since 2008, HBG has been successfully grown with minimal winterkill in Provo, UT, USA, and is now being considered for broader adoption in similar climates. Two separate studies were conducted to evaluate the …
Small-Scale Production Of Bespoke Accelerated Aging Plutonium Alloy, K. S. Holliday, A. M. Parkes, Devin Rappleye, D. J. Roberts, K. J. Kondrat, S. A. Simpson, A. J. Swift, U. Mehta, R. M. Kissinger, D. L. Rosas, L. S. Ripplinger, E. R. Tardiff, S. L. Harris, S. Perkins, C. Hawkins, N. J. Gibbs, R. J. P. Driscoll, A. T. Sidambe, R. A. Cole, T. T. Roehling, J R. Jeffries
Small-Scale Production Of Bespoke Accelerated Aging Plutonium Alloy, K. S. Holliday, A. M. Parkes, Devin Rappleye, D. J. Roberts, K. J. Kondrat, S. A. Simpson, A. J. Swift, U. Mehta, R. M. Kissinger, D. L. Rosas, L. S. Ripplinger, E. R. Tardiff, S. L. Harris, S. Perkins, C. Hawkins, N. J. Gibbs, R. J. P. Driscoll, A. T. Sidambe, R. A. Cole, T. T. Roehling, J R. Jeffries
Faculty Publications
This study demonstrates the 100 g scale manufacture of a plutonium alloy that ages at an accelerated rate. The resulting alloy ages six times faster than typical weapons-grade plutonium due to the addition of 238Pu. As a major innovation, the process involved using a partial direct oxide reduction technique. This method was achieved by developing a new, complex geometry stirrer using additive manufacturing to reduce the 238Pu oxide and efficiently incorporate it into weapons-grade plutonium metal. The material was then purified by molten salt extraction and electrorefining before being alloyed with gallium. The alloy was then cold-rolled and …
A Study Of The Parameters Involved In Nir Sintering Of Silver Microparticle-Based, Pad-Printed Features, Jonah Clement Brooks
A Study Of The Parameters Involved In Nir Sintering Of Silver Microparticle-Based, Pad-Printed Features, Jonah Clement Brooks
Theses and Dissertations
This study explores the effectiveness of pad printing and near-infrared (NIR) sintering for producing conductive silver microparticle traces. A new pad printer was set up, and silver inks with varying concentrations of silver particles (17.5 %v/v, 20 %v/v, and 25 %v/v) were manufactured, printed, and sintered. The study identified sintering time and silver concentration as the most influential parameters affecting resistivity, with the best result of 8.73 × 10⁻⁷ Ω·m achieved using 25 %v/v ink sintered for 3 seconds at full power. Although resistivity continued to decrease at this maximum sintering duration, further optimization of parameters, including NIR bulb distance …
Assessing The Impact Of Internal Flow Dynamics On Detection Region Concentrations Of Low-Cost Optical Particle Counters, Livingstone Quarshie
Assessing The Impact Of Internal Flow Dynamics On Detection Region Concentrations Of Low-Cost Optical Particle Counters, Livingstone Quarshie
Theses and Dissertations
Particulate matter (PM) poses significant risks to human health and the environment, making accurate measurement essential for exposure assessment and regulatory decisions. While traditional reference methods provide reliable data, they are often bulky, expensive, and difficult to maintain. Optical Particle Counters (OPCs) offer a cost-effective alternative, commonly used in clean rooms, residential spaces, and personal exposure monitoring. These devices rely on light scattering to measure PM concentrations. However, low cost OPCs face challenges related to calibration and measurement accuracy, requiring careful performance evaluation. This study used computational fluid dynamics (CFD) tools, CONVERGE Studio and ANSYS Fluent, to simulate a simplified …
In-Situ Void Formation During Liquid Composite Molding For Preformed Warp, Weft, And Alternating Orientation Rtm Samples, Tanner Cal Garrett
In-Situ Void Formation During Liquid Composite Molding For Preformed Warp, Weft, And Alternating Orientation Rtm Samples, Tanner Cal Garrett
Theses and Dissertations
Carbon fiber reinforced parts are utilized by the transportation industry due to being strong yet lightweight. The highest quality parts are made using carbon fiber (CF) pre-impregnated with resin processed in an autoclave to reduce void content. The autoclave process is expensive and takes up a large amount of space, so liquid composite molding (LCM) is a less expensive alternative. The parts produced using LCM can be manufactured to rival the mechanical performance of parts made with pre-preg in an autoclave, but concerns remain over voids. Most research pertaining to void formation has been done ex-situ by either micro-CT or …
The Conditioning Of Reservoir Computing And Ng-Rc For Forecasting And The Effects Of Temporal Overparameterization, Daniel Jensen
The Conditioning Of Reservoir Computing And Ng-Rc For Forecasting And The Effects Of Temporal Overparameterization, Daniel Jensen
Theses and Dissertations
Reservoir computing and "Next-generation reservoir computing" built on nonlinear vector autoregression are algorithms for predicting time series given past observations. Both algorithms have been successful in predicting some chaotic dynamical systems, but this success is not theoretically well understood. This paper considers the conditioning of both algorithms and the nature of the solutions found. With either algorithm, the least squares problem which is solved to give parameters as a function of the time series data is ill-conditioned, leading to parameter non-identifiability. Both algorithms fall into the class of "sloppy models." Standard practice to regularize either algorithm includes a bias towards …
Surface-Texture Fabrication Of Zirconia-Toughened Alumina Using Focused Ion-Beam Machining, Kameron M. Woodruff
Surface-Texture Fabrication Of Zirconia-Toughened Alumina Using Focused Ion-Beam Machining, Kameron M. Woodruff
Theses and Dissertations
Focused ion-beam machining (FIBM), a precise form of micro-machining, was tested for feasibility in the manufacturing of microscopic dimples in zirconia-toughened alumina (ZTA), a wear resistant ceramic used in artificial joint replacements. The interaction between the ion-beam and the ceramic was characterized in terms of material removal rate (MRR), surface roughness, and notable irregularities (e.g. pitting, steps at vertical faces). These characteristics were used to design and machine patterns of microscopic dimples for tribological testing. The dimple size and pattern area were limited due to a slow MRR and high cost of milling. No significant difference in the coefficient of …
Investigation Of Temperature Control's Effects In Additive Friction Stir Deposition Of Al 7050-T7451, Jason Noah Glenn
Investigation Of Temperature Control's Effects In Additive Friction Stir Deposition Of Al 7050-T7451, Jason Noah Glenn
Theses and Dissertations
Additive Friction Stir Deposition (AFSD) is a friction stir based process that includes the addition of material extruding through a bore in the center of the rotating tool. The deformation of the material from the tool rotation and high pressures result in fully dense depositions printed at very high rates with forged like mechanical properties. While deposition properties of varying alloys have been increasingly published, little work has been done investigating control of the process and as with all additive processes, consistency and predictability are of significant concern before implementation can occur. One common control method implemented in Friction Stir …
Water Conservation For The Great Salt Lake: Measuring Success And Uncertainty In Utah's Efforts, Sarah E. Witney
Water Conservation For The Great Salt Lake: Measuring Success And Uncertainty In Utah's Efforts, Sarah E. Witney
Theses and Dissertations
The Great Salt Lake in Utah, United States is one of many saline lakes worldwide that is currently in decline. The shrinkage and collapse of global saline lakes is primarily caused by irrigated agriculture and other human consumptive uses, with secondary contributions from global climate change. Great Salt Lake's area has decreased by more than 50% relative to its long-term natural level. The decline of these lakes triggers serious and long-lasting socioeconomic consequences, including destruction of habitat, degradation of air quality, and damage to the economy. The Utah state government has instituted a variety of programs to conserve water to …
Isolation Structure Simulation And Measurement To Reduce Transmit-Receive Coupling In Compact X-Band Fmcw Radar, Bruce E. Averill
Isolation Structure Simulation And Measurement To Reduce Transmit-Receive Coupling In Compact X-Band Fmcw Radar, Bruce E. Averill
Theses and Dissertations
Transmit-receive isolation in a compact X-band FMCW radar antenna system is critical for system performance. A set of candidate isolation structures are explored. In the process, performance of a commercial FDTD EM simulation software package is evaluated for antenna array modelling. Noise parameters of receiver electronics on a prototype radar processing front-end are tested. Improvements to the BYU Microwave Lab RF anechoic chamber are also reported, with a focus on measurement repeatability and antenna pattern angular resolution.
Sample Preparation And Acquisition Strategies To Improve Accessibility And Proteome Depth In Single-Cell And Low-Input Proteomics, Sara Madisyn Johnston
Sample Preparation And Acquisition Strategies To Improve Accessibility And Proteome Depth In Single-Cell And Low-Input Proteomics, Sara Madisyn Johnston
Theses and Dissertations
Proteins are responsible for important cellular functions and processes including regulation, structural integrity, signaling, transport, and immune functions. Proteomics directly identifies these proteins and enables deeper characterization of the dynamic cellular environment beyond the capabilities of genomics and transcriptomics. Single-cell proteomics further enhances this approach by capturing cellular heterogeneity, which bulk proteomics obscures due to averaging protein expression across large cell populations. Despite significant advances in single-cell proteomics, continued innovation is necessary to increase workflow accessibility and throughput, minimize peptide losses, and achieve comprehensive coverage of the proteome. This dissertation addresses these challenges by developing improved sample preparation methods, two-dimensional …
Non-Destructive Testing Of Stressed Materials Using X-Ray Diffraction And Second-Harmonic Generation, Melissa Nguyen Lumogdang
Non-Destructive Testing Of Stressed Materials Using X-Ray Diffraction And Second-Harmonic Generation, Melissa Nguyen Lumogdang
Theses and Dissertations
A material in use, anywhere from a plastic bag to common infrastructure, will eventually fail from deformation. When strained, the material chemical structure can change, and that change is dependent on many factors, including the amount of strain and strain rate. Understanding the relationship between physical properties and structural changes due to deformation can allow structural manipulation to achieve the desired physical properties. Additionally, research into non-destructive testing (NDT) methods can be used as supporting evidence for replacing destructive testing methods and possible infield stress monitoring. In this dissertation, X-ray diffraction (XRD) and second-harmonic generation (SHG) are the main NDT …
Porous Hierarchically Ordered Hydrogels Demonstrating Structurally Dependent Mechanical Properties, Elisabeth C. Lloyd, Sujata Dhakal, Shahrouz Amini, Rami Alhasan, Peter Fratzl, Douglas R. Tree, Svetlana Morozova, Robert J. Hickey
Porous Hierarchically Ordered Hydrogels Demonstrating Structurally Dependent Mechanical Properties, Elisabeth C. Lloyd, Sujata Dhakal, Shahrouz Amini, Rami Alhasan, Peter Fratzl, Douglas R. Tree, Svetlana Morozova, Robert J. Hickey
Faculty Publications
While hierarchical ordering is a distinctive feature of natural tissues and is directly responsible for their diverse and unique properties, efforts to synthesize biomaterials have primarily focused on using molecular-based approaches with little emphasis on multiscale structure. Here, we report a bottom-up self-assembly process to produce highly porous hydrogel fibers that resemble extracellular matrices both structurally and mechanically. Physically crosslinked nanostructured micelles form the walls of micrometer-sized water-rich pores with preferred orientation along the fiber direction. Low elastic moduli (< 1 kPa), high elasticity (extending by more than 12 times the initial length), non-linear elasticity (e.g., hyperelasticity), and completely reversible extension are derived from unevenly distributed strain between the micrometer-sized pores and the polymer chains, which is reminiscent of cellular solids. Control of the material microstructure and orientation over many orders of magnitude (e.g., nm–μm), while holding the nanostructure constant, reveals how the multiscale structure directly impacts mechanical properties.
In-Situ Rtm Videos, Tanner Garrett
In-Situ Rtm Videos, Tanner Garrett
ScholarsArchive Data
This data set contains videos of resin infusion experiments.
Innovations In Sample Handling Automation To Increase Accessibility Of Sample-Limited Proteomics, Nathaniel Ben Axtell
Innovations In Sample Handling Automation To Increase Accessibility Of Sample-Limited Proteomics, Nathaniel Ben Axtell
Theses and Dissertations
Innovation is the vehicle that drives scientific research forward in virtually every field. Advances in genome sequencing propelled the human genome project to completion in 2003 and set the stage for the era of proteomics. Now decades of innovation in liquid chromatography (LC) and mass spectrometry (MS) have improved sensitivity sufficiently to enable single-cell proteomics and other sample-limited studies. Single-cell proteomics reveal patterns of gene expression that are often obscured by bulk-scale proteomics, leading to the identification of new protein biomarker candidates. Sensitive targeted proteomics is the key to successful translation of low-abundance protein assays into clinical applications. With a …
Effects Of Novel Fire Regimes On Plant And Animal Communities, Ryan Pienaar
Effects Of Novel Fire Regimes On Plant And Animal Communities, Ryan Pienaar
Theses and Dissertations
Human actions are threatening global biodiversity through changes to ecosystems to which species are not well adapted. One of the main pathways by which humans affect change is through altered disturbance regimes. This includes changes in the size, frequency, and severity of wildfires. The impact of wildfires on native plant and animal communities varies across ecosystems as species in a community have adapted relatively predictable fire patterns over time. Changing fire patterns alters successional dynamics that can favor certain species over others and thus have a negative impact on biodiversity. This dissertation evaluates responses of different plant and animal species …
Improved Soil Parameters For Lateral Pile Analysis From Full-Scale Load Tests In Cohesionless Soil, Dallin Bruce Widmer
Improved Soil Parameters For Lateral Pile Analysis From Full-Scale Load Tests In Cohesionless Soil, Dallin Bruce Widmer
Theses and Dissertations
One common software program developed for analyzing single laterally loaded piles is called LPILE. Soil properties are required as input into LPILE. For sands, the soil properties required are effective soil unit weight, γ’; modulus of subgrade reaction, k; and the internal friction angle,ϕ’. There are two commonly used methods to obtain ϕ’ and subsequently k: the API method and Bolton method. Using the Bolton method to determine the soil strength properties gives more accurate load deflection values with respect to measured values from field tests. The Bolton method led to a 46% reduction in the predicted deflection error compared …
Methods For Rotating Electrodes In High-Temperature Molten Salts, Ranon Fuller, Eloise Cluff, Edward Mercado, Carlos Mejia, Devin Rappleye
Methods For Rotating Electrodes In High-Temperature Molten Salts, Ranon Fuller, Eloise Cluff, Edward Mercado, Carlos Mejia, Devin Rappleye
Faculty Publications
In this paper, we describe and validate a custom apparatus for performing high-speed (250-3,500 rpm) rotating electrode and dilatometer density experiments in molten salts. The reported details can aid in decreasing the difficulty and increasing the quality of such experiments. We discuss the design challenges and the solutions identified. We investigate methods for accurately measuring the solution resistance using electrochemical impedance spectroscopy (EIS), calculating the working electrode area using cyclic voltammetry (CV), and measuring the mass transfer-limited current of rotating electrodes using a series of chronoamperometry (CA) pulses. We further demonstrate the efficacy of our methods in producing accurate results.
Reconnaissance Investigation Of Soil-Structure Harmonics And Building Collapse Patterns In The 2024 Noto And 2016 Kumamoto Japan Earthquakes, Nathan Cole Chesnut
Reconnaissance Investigation Of Soil-Structure Harmonics And Building Collapse Patterns In The 2024 Noto And 2016 Kumamoto Japan Earthquakes, Nathan Cole Chesnut
Theses and Dissertations
This study used ambient vibration data collected during a reconnaissance mission to assess whether harmonics between structures and the underlying soil played a significant role in the pattern of buildings that collapsed in the magnitude 7.5 Noto Japan earthquake on January 1, 2024, and the magnitude 6.2 to 7.0 Kumamoto Japan earthquake series that occurred between April 14 and 16, 2016. Portable seismometers were used to measure the natural soil and structural frequencies of vibration under ambient loading at sites in Wajima, a city located on the Noto Peninsula, and in four locations in and around Kumamoto City. Soil frequency …
Methamphetamine Effects On The Striatal Neuroimmune System, Hillary Adelaide Wadsworth
Methamphetamine Effects On The Striatal Neuroimmune System, Hillary Adelaide Wadsworth
Theses and Dissertations
Dopamine is thought of as the reward molecule of the brain, and while it does deal with reward, it is also associated with motivation and crucial for controlled movement. There are two main dopaminergic systems in the brain, the nigrostriatal system, which originates in the substantia nigra compacta and projects dopamine into the dorsal striatum; and the mesolimbic system, which originates in the ventral tegmental area and projects dopamine into the nucleus accumbens. While the mesolimbic dopamine system deals with motivation and reward, the nigrostriatal pathway underlies movement. Microglia are the immune cells of the brain and are incredibly dynamic. …
Durability Of Lightweight Concrete Bridge Decks In Utah, Lorenzo Eusebi-Diehr
Durability Of Lightweight Concrete Bridge Decks In Utah, Lorenzo Eusebi-Diehr
Theses and Dissertations
The objectives of this research were to document and compare properties of lightweight concrete and normal-weight concrete used for construction of bridge decks and approach slabs in northern Utah. The scope of work included field and laboratory testing to characterize concrete specimens obtained from three lightweight concrete bridge deck sites and the normal-weight concrete approach slabs at one of these sites, which were recommended by the Utah Department of Transportation for evaluation, as well as laboratory testing to characterize concrete specimens obtained through previous research on lightweight and normal-weight concrete bridge decks. For field testing, a distress survey was performed …
Advancing Global Flood Inundation Mapping From Srtm To Fabdem, Taylor James Miskin
Advancing Global Flood Inundation Mapping From Srtm To Fabdem, Taylor James Miskin
Theses and Dissertations
This study evaluates how elevation and hydrography inputs influence flood extent accuracy using ARC (Automated Rating Curve), a raster-based flood inundation model. It focuses on how spatial resolution and vertical accuracy, reflecting the satellite mission from which each dataset was derived, and bare-earth processing of the DEM affect the accuracy of predicted flood extents. The assessment compares four dataset combinations--FABDEM with GEOGLOWS River Forecasting System Version 1(RFS1), FABDEM with GEOGLOWS River Forecasting System Version 2(RFS2), SRTM with RFS1, and SRTM with RFS2--across five study locations: the Suncook River in New Hampshire, North Fork Kentucky River in Kentucky, Nimishillen Creek in …
Language Choice And Russian Course Enrollment Among University Students, Emma Calderwood
Language Choice And Russian Course Enrollment Among University Students, Emma Calderwood
Theses and Dissertations
University Russian enrollments have been steadily declining in the United States since 2009 (MLA, 2023). No research has been done to examine student motivation for studying Russian since long before the 2022 increase in conflict between Russia and Ukraine. This study surveys two groups of students at the university level: students enrolled in BYU 101-level language classes, and students enrolled in Russian classes at six universities in the United States. The findings report that the most common reasons students choose to take university Russian classes is because they have a general interest in the language, they want to travel to …
Durability Of Rapid-Setting Concrete Repairs On Pavement Panels And Bridge Decks In Utah, Steven Benjamin Burdette
Durability Of Rapid-Setting Concrete Repairs On Pavement Panels And Bridge Decks In Utah, Steven Benjamin Burdette
Theses and Dissertations
The objective of this research was to evaluate the durability of rapid-setting concrete batched using volumetric concrete mixers and placed in a cold region. The scope of work included field and laboratory evaluations of rapid-setting concrete repairs on both pavement panels and bridge decks in Utah. Six sites in northern Utah were selected by Utah Department of Transportation (UDOT) personnel for evaluation. At the time of inspection, the repairs had been in service for 4 to 5 years. Field research included visual inspection, Schmidt rebound hammer testing, resistivity testing, and concrete sampling. Laboratory research included stiffness testing, compressive strength testing, …
Reconstruction Of Cad Models Into Single Trimmed Surfaces, Rebecca Rasmussen
Reconstruction Of Cad Models Into Single Trimmed Surfaces, Rebecca Rasmussen
Theses and Dissertations
Classical methods by which computer-aided design (CAD) geometries are represented for both design and analysis involve meshing. However, the current process of converting a CAD model into an analysis-suitable surface mesh for the automotive industry takes a significant amount of time and labor, results in a faceted representation of the original smooth geometry, and generates representations that are prohibitively expensive for use in high-order explicit dynamics computations. This research focuses on accurately and efficiently rebuilding given CAD surfaces or meshes, such as shell-like components of automotive vehicles, into smooth, single trimmed spline surface approximations (rather than typical piecewise-linear approximations), making …
The Influence Of Leaders And Managers In Commercial Construction, Samuel F. Merrill
The Influence Of Leaders And Managers In Commercial Construction, Samuel F. Merrill
Theses and Dissertations
This research explores how the distinct traits of leadership and management influence supervisory effectiveness and employee experiences in Utah's commercial construction sector. While leadership and management are often conflated, this study draws on foundational literature that defines leadership as people-centered, visionary, and empowering. In contrast, management is characterized as results-driven, process-oriented, and focused on control. Using survey data from 95 individuals working in commercial construction, the study evaluates how supervisors with leadership or managerial characteristics are perceived by their teams. Supervisors were categorized based on observable behaviors selected by respondents, distinguishing leadership traits from managerial traits. Supervisors identified as leaders …