Engineering Commons^™

Evaluation Of Hertz’S Contact Stress Solution For Deformable Truncated Indenters, Kathleen M. Edwards

Honors Capstones

No abstract provided.

Heterogeneous Templated Grain Growth, Dallin James Frandsen

Theses and Dissertations

Heterogeneous Templated Grain Growth (HTGG) is a developing method to fabricate designedcrystallographic textures of polycrystalline materials. Designed crystallographic texturesare important for enhancing desired material properties for specific applications. Four steps toHTGG have been identified: fabricating single crystal seeds, aligning seeds embedded into a powdermatrix, compacting seeds in the powder matrix, and promoting templating through sintering.Experimental research was performed on processing parameters, powder particle size and compaction,to indicate template coarsening trends during sintering. The results demonstrated thatlarger powder particles were influenced faster by the seeds crystallographic orientations comparedto smaller particles. The local effects of porosity on the seed and powder interface …

Stress Modulated Grain Boundary Mobility, Derek Michael Lontine

Theses and Dissertations

This thesis consists of a thermodynamically based kinetic model that more accurately predicts grain boundary mobility (GBM) over a large range of thermodynamic states including changes in temperature, pressure and shear stress. The form of the model was validated against calculated GBM values for Al bicrystals via molecular dynamics (MD) simulations. A total of 98,786 simulations were performed (164 different GBs, each with a minimum of 250 different thermodynamic states, and 2 different driving forces). Methodology for the computation of the GBM via MD simulations is provided. The model parameters are directly linked to extensive thermodynamic quantities and suggest potential …

A Cognitive Approach To Predicting Academic Success In Computing, Colby Goettel

Theses and Dissertations

This research examines the possible correlations between a computing student's learning preference and their academic success, as well as their overall satisfaction with their major. CS and IT seniors at BYU were surveyed about their learning preferences and satisfaction with their major. The research found that IT students who are more reflective in their learning preference tend to have higher grades in their major. Additionally, it found that student age and their parents' education level were significant players in their academic success. However, there were no correlations found between major satisfaction and academic performance.

Simulated Tremor Propagation In The Upper Limb: From Muscle Activity To Joint Displacement, Thomas Henry Corie

Theses and Dissertations

Although tremor is the most common movement disorder, there are few non-invasive treatment options. One of the obstacles to creating effective tremor suppression devices is our lack of understanding regarding where tremor originates (which muscles), how it propagates through the limb (to which degrees of freedom, DOF), and where it manifests most severely (which DOF). To investigate these questions, we created a simple, linear time-invariant model to simulate tremor, with tremorogenic muscle activity input (in the 15 major superficial muscles from the shoulder to the wrist) and joint displacement output (in the 7 major upper limb DOF). The model included …

The Circuit, Spring 2018, Department Of Electrical And Computer Engineering, Michigan Technological University

Department of Electrical and Computer Engineering Newsletters

Table of Contents:

• Fugere Generosity Creates Opportunities
• Faculty News
• Sparsifying Graphs for Faster Data Processing
• Manipulating Electromagnetic Waves by Artificial Materials
• Taking a Close Look at Computing
• COVOX is My Co-Pilot
• Taking on New Departmental Roles
• Student News
• Alumni Spotlight

Implications Of Data Sampling Resolution On Water Use Simulation, End-Use Disaggregation, And Demand Management, A. Cominola, M. Giuliani, A. Castelletti, David E. Rosenberg, Adel M. Abdallah

Civil and Environmental Engineering Faculty Publications

Understanding the tradeoff between the information of high-resolution water use data and the costs of smart meters to collect data with sub-minute resolution is crucial to inform smart meter networks. To explore this tradeoff, we first present STREaM, a STochastic Residential water End-use Model that generates synthetic water end-use time series with 10-s and progressively coarser sampling resolutions. Second, we apply a comparative framework to STREaM output and assess the impact of data sampling resolution on end-use disaggregation, post meter leak detection, peak demand estimation, data storage, and meter availability. Our findings show that increased sampling resolution allows more accurate …

Development Of Waste-Based-Thermoplastic Composite Heat Insulators, Waseem Yousef Hittini

Mechanical Engineering Theses

The main scope of this research is to develop polymer-filler thermal insulators utilizing natural and industrial local waste such as date pit powder (DPP), devulcanized tire rubber (DVR), and buffing dust (BD). Recycling and reuse of these local wastes as fillers in insulation materials has significant benefits for the UAE environment. An objective of this work was to study the effect of the combination of these local wastes with polystyrene (PS) on the physical, mechanical, and thermal properties of the developed thermal insulators. PS was used as a matrix, mixed in different proportions with the waste fillers. Each mixture was …

Data On Cost-Optimal Nearly Zero Energy Buildings (Nzebs) Across Europe, Florida Solar Energy Center, Delia D'Agostino

FSEC Energy Research Center®

This data article refers to the research paper A model for the cost-optimal design of Nearly Zero Energy Buildings (NZEBs) in representative climates across Europe [1]. The reported data deal with the design optimization of a residential building prototype located in representative European locations. The study focus on the research of cost-optimal choices and efficiency measures in new buildings depending on the climate. The data linked within this article relate to the modeled building energy consumption, renewable production, potential energy savings, and costs. Data allow to visualize energy consumption before and after the optimization, selected efficiency measures, costs and renewable …

Engineering Education Research, Michael C. Loui, Maura Borrego

School of Engineering Education Faculty Publications

This chapter describes several aspects of engineering education research with an emphasis on how they might relate to computing education research. We briefly summarize the history of engineering education as a scholarly field, and we describe the current structures that support engineering education research: academic departments, scholarly journals, annual conferences, and professional societies. We identify the theories that often inform engineering education research studies, including theories of cognition, motivation, and identity. We explain how quantitative, qualitative, and mixed methods have been used. We summarize the results of an illustrative selection of empirical studies across a broad range of topics, including …

Soot And Spectral Radiation Modeling For High-Pressure Turbulent Spray Flames, Sebastian Ferreyro Fernandez, C. Paul, A. Sircar, A. Imren, D. C. Haworth, Somesh Roy, Michael F. Modest

Mechanical Engineering Faculty Research and Publications

A transported probability density function (PDF) method and a photon Monte Carlo/line-by-line (PMC/LBL) spectral model are exercised to generate physical insight into soot processes and spectral radiation characteristics in transient high-pressure turbulent n-dodecane spray flames, under conditions that are relevant for compression-ignition piston engines. PDF model results are compared with experimental measurements and with results from a locally well-stirred reactor (WSR) model that neglects unresolved turbulent fluctuations in composition and temperature. Computed total soot mass and soot spatial distributions are highly sensitive to the modeling of unresolved turbulent fluctuations. To achieve reasonable agreement between model and experiment and to capture …

The Professional Constructor, Full Issue, Volume 43, Number 01

The Professional Constructor

No abstract provided.

Sysml Output Interface And System-Level Requirement Analyzer For The Horizon Simulation Framework, Viren Kishor Patel

Master's Theses

Model-Based Systems Engineering in industry has been constantly increasing its presence within the aerospace industry. SysML is one such MBSE tool that shows complex system organization and relationships. The Horizon Simulation Framework is another MBSE tool, created by Cal Poly students, that gives users the ability to run “day-in-the-life” simulations of systems. Finding a way to link these two tools could allow systems engineers to reap the benefits of both.

This thesis investigates the background and design process involved with developing the code that can convert an output file generated in SysML, into a format specifically made for the Horizon …

Evaluation Of The Effectiveness Of A Gaze-Based Training Intervention On Latent Hazard Anticipation Skills For Young Drivers: A Driving Simulator Study, Yusuke Yamani, Pinar Biçaksiz, Dakota B. Palmer, Nathan Hatfield, Siby Samuel

Psychology Faculty Publications

A PC-based training program (Road Awareness and Perception Training or RAPT; Pradhan et al., 2009), proven effective for improving young novice drivers' hazard anticipation skills, did not fully maximize the hazard anticipation performance of young drivers despite the use of similar anticipation scenarios in both, the training and the evaluation drives. The current driving simulator experiment examined the additive effects of expert eye movement videos following RAPT training on young drivers' hazard anticipation performance compared to video-only and RAPT-only conditions. The study employed a between-subject design in which 36 young participants (aged 18-21) were equally and randomly assigned to one …

Impact Of First-Year Initiatives On Retention Of Students: Are There Differences In Retention Of Students By Ethnicity And Gender?, Patricia Backer, Joseph Green, Bryan Matlen, Cindy Kato

Faculty Publications

Project Succeed is a campus-wide initiative funded by the U.S. Department of Education. Its focus is to improve the 5-year graduation and retention rates and close the achievement gap for Under-Represented Minorities (URMs) across all majors at San José State University (SJSU). In addition, SJSU has a high percent of first generation students. We have several thrusts under this project: block scheduling, Faculty/Staff Mentor program, expanding Peer Educators, developing a First Year Experience Program, and developing more student living learning communities. This project is in its fourth year and we have analyzed each project effort with respect to its impact …

Increasing Drug Delivery Efficacy Of Drug-Coated Balloons, Alexander Galan, Eric Bidinger, Franco Godoy, Shrusti Patel

Senior Theses

Peripheral artery disease (PAD), the narrowing of peripheral arteries located in areas such as the arms and legs, is a common disease that affects 12% to 20% of people over 65. Numerous therapies have been developed to treat PAD, the most recent technology being drug-coated balloons. Drug-coated balloons release drugs, such as Paclitaxel (PTX), into the arterial wall during balloon angioplasty to locally treat PAD. Current levels of drug transfer from the balloon to the vascular endothelium are at a low 10%-18%. Our Biomedical Engineering Senior Design project aims to increase drug delivery of drug-coated balloons by manipulating the clinically-controllable …

Building Small Commercial Airport Clusters To Increase Marketing Capability, Dixie Button Phd, Rachel M. Vigness, Patti Clark

Publications

Building Small Commercial Airport Clusters to Increase Marketing Capability was presented at MBAA International, Chicago, IL in April, 2018.

A Strategic Audit Of Medtronic Plc, Jozzy Carter

Honors Program: Senior Projects (Public)

Humans will always have a need for healthcare, and as the world continues to innovate in the tech space, consumers will demand advances in medicine and medical devices. Medtronic is at the forefront of this innovation but faces intense competition in the medical technologies industry. This poses the question: what can Medtronic do to continue its growth and stay competitive in this space? This paper offers an analysis of Medtronic as a medical device company by offering insight to its competitive advantage, financials, business mix, and value chain. It also analyzes the forces that affect Medtronic using SWOT, PEST, and …

Effects Of Surface Treatments On National Bridge Inventory Condition Ratings For Concrete Bridge Decks In Utah, John Taani De Leon

Theses and Dissertations

Although the application of surface treatments on bridge decks is expected to positively impact bridge deck condition, the effectiveness of specific surface treatments on extending bridge deck life has not yet been quantified on Utah bridge decks. Therefore, the objectives of this research were to develop and analyze deterioration curves for bare concrete bridge decks and decks with specific treatments commonly used in Utah. The scope of this study was determined by the types and extent of electronically available data, including selected static inventory information; maintenance, rehabilitation, and reconstruction histories; and National Bridge Inventory (NBI) condition ratings for the bridge …

Measuring And Calculating Current Atmospheric Phosphorous And Nitrogen Loadings On Utah Lake Using Field Samples, Laboratory Methods, And Statistical Analysis: Implication For Water Quality Issues, Jacob Milton Olsen

Theses and Dissertations

Atmospheric nutrient loading and transport though precipitation and dry deposition is one of the least understood yet one of the most important pathways of nutrient transport into many lakes. These nutrients, phosphorus and nitrogen, are essential for aquatic life and often play major roles in algae blooms that occur in lakes and reservoirs. Often heavy algal growth intensifies a variety of water quality problems. Utah Lake may be even more susceptible to atmospheric deposition due to its large surface area to volume ratio and proximity to Great Basin dust sources. In this study, eight months of atmospheric deposition data were …

Chloride Concentration And Blow-Through Analysis For Concrete Bridge Decks Rehabilitated Using Hydro-Demolition, Elizabeth Ashleigh Roper

Theses and Dissertations

The objectives of this research were 1) to investigate the effects of hydrodemolition treatment timing on chloride concentration profiles in concrete bridge decks for depths of concrete removal below the top mat of reinforcing steel and 2) to investigate factors that influence the occurrence of blow-throughs in concrete bridge decks when hydrodemolition is used. The research results are intended to provide engineers with guidance about the latest timing of hydrodemolition that can maintain a chloride concentration level below 2.0 lb of chloride per cubic yard of concrete at the levels of both the top and bottom mats of reinforcing steel, …

Effect Of Gyroscope Parameters On Gyroscopic Tremor Suppression In A Single Degree Of Freedom, Brendon Connor Allen

Theses and Dissertations

Although tremor is one of the most common movement disorders, there are few effective tremor-suppressing options available to patients. One potential tremor-suppression device involves a wearable gyrostabilizer similar to those used to stabilize cameras. However, we do not currently know how to design a gyrostabilizer to suppress tremor in an optimal manner. To address this gap, we present a systematic investigation of how gyrostabilizer parameters affect tremor suppression in a single degree of freedom (DOF). A simple model of the hand with a single DOF at the wrist and a gyroscope mounted on the back of the hand was used …

Visualization And Quantification Of Lipid And Protein In Single Microalgal Cell, Hina Laghari Mohammad Shakeel

Electrical Engineering Theses

Microalgae have the potential to be used as a main source of renewable energy in the future due to their lipid contents. Microalgae are comprised of several components including carbohydrates, lipids and proteins. This lipid and protein composition needs to be quantified so the amount of usable energy can be measured. Therefore, the main objective of this thesis is to develop an image processing technique for the quantification of lipid and protein contents in single microalgal cell.

This image processing technique has made lipid quantification an easier process as compared to previous methods used to quantify lipid content. The technique …

Experimental And Modeling Of Co2 Removal From Gas Mixtures Using Membrane Contractors Packed With Glass Beads., Farah O.S. Abuhatab

Chemical and Petroleum Engineering Theses

Natural gas is one of the major natural resources in UAE which carries significant amounts of acid gases. For the purpose of utilizing or liquefying, the gas must be pre-treated by separating the major non-hydrocarbon gases, namely C0₂. Typical C0₂ separation processes involve separation using sorbents or solvent, cryogenic or membrane. Among these processes, the chemical absorption considered to be the most effective process to remove C0₂. However, this process carries several drawbacks such as flooding, foaming, entraining, channeling, and most importantly high capital and operating costs.

An integrated unit called gas absorption membrane (GAM) …

Structural Identification And Assessment Of The Inverted Tee Girder Bridge System, Garrett P. D. Martindale

Department of Civil and Environmental Engineering: Dissertations, Theses, and Student Research

The Inverted Tee (IT) girder bridge system was originally developed in 1996 by the University of Nebraska–Lincoln (UNL) and Nebraska Department of Roads (NDOR) engineers. This bridge system currently accounts for over 110 bridges in Nebraska used for both state highways and local county roads. Excessive transverse and longitudinal deck cracking has been observed and noted in numerous bridge inspection reports. Since the IT girder bridge system is relatively new, limited data and knowledge exist on its structural performance and behavior. This study evaluates the IT girder bridge system by conducting twenty field observations as well as recording accelerometer time …

Force And Motion Based Methods For Planar Human-Robot Co-Manipulation Of Extended Objects, Erich Allen Mielke

Theses and Dissertations

As robots become more common operating in close proximity to people, new opportunities arise for physical human-robot interaction, such as co-manipulation of extended objects. Co-manipulation involves physical interaction between two partners where an object held by both is manipulated in tandem. There is a dearth of viable high degree-of-freedom co-manipulation controllers, especially for extended objects, as well as a lack of information about how human-human teams perform in high degree-of-freedom tasks. One method for creating co-manipulation controllers is to pattern them off of human data. This thesis uses this technique by exploring a previously completed experimental study. The study involved …

Safety Analysis Of Automatic Dependent Surveillance – Broadcast (Ads-B) System, Rajee Olaganathan

Publications

ADS-B is one of the significant implementation systems of NextGen, to help pilots and air traffic controllers to create a safer, and more efficient National Airspace System (NAS). First, this research paper will briefly describe the ADS-B system, its design structure, ADS-B In and ADS-B Out systems, its efficiency both in pilot applications and in air traffic control applications, and then discuss about the system safety analysis. The preliminary hazard analysis and fault tree analysis will be done for the identified and selected hazards, and will be briefly discussed. The paper will conclude by providing recommendations to prevent/mitigate the hazards …

Discovering The Data Of Safety: Embry-Riddle’S Aviation Safety And Security Archives, Melissa Gottwald, Michelle M. Bennett, Brent D. Bowen, Erin E. Bowen, Jordan I. Brown, Ed J. Coleman, Timothy B. Holt, William D. Waldock

Publications

The path to the sky and beyond has not been simple or obstacle-free, but dedicated dreamers have worked to overcome obstacles, learn from mishaps, and develop new technologies to achieve their goals. As the leading university for aviation and aerospace education, Embry-Riddle Aeronautical University maintains a firm commitment to the practice and study of safety. As part of this mission, the university has established the Aviation Safety and Security Archives (ASASA) which is a national treasure of aviation safety history and information.

The Role Of Obesity And Dietary Fatty Acid Content In Regulating Humeral Bone And Cartilage Homeostasis, Lauren Votava

McKelvey School of Engineering Graduate Student Theses & Dissertations

Objective: The goal of this study was to investigate the effects of different dietary fatty acids in the context of diet-induced obesity on bone and cartilage in the humerus. It is known that obesity increases the severity of injury-induced osteoarthritis in the knee, however it is not fully understood what pathological changes have occurred due to diet alone¹. Additionally, while it is known that shoulder osteoarthritis has a link to obesity, the alterations in this joint are incompletely described.

Methods: In order to examine diet-induced changes in both bone and cartilage, this research utilized mice that had been …

Simulation Of The Inertia Friction Welding Process Using A Subscale Specimen And A Friction Stir Welder, Ty Samual Dansie

Theses and Dissertations

This study develops a method to simulate a full-scale inertia friction weld with a sub-scale specimen and modifies a direct drive friction stir welder to perform the welding process. A torque meter is fabricated for the FSW machine to measure weld torque. Machine controls are modified to enable a force control during the IFW process. An equation is created to measure weld upset due to deflection of the FSW machine. Data obtained from a full-scale inertia friction weld are altered to account for the geometrical differences between the sub-scale and full-scale specimens. The IFW are simulated with the sub-scale specimen …