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Articles 1 - 29 of 29
Full-Text Articles in Engineering
Characterizing Interfacial Bonds In Hybrid Metal Am Structures, John Ross Linn
Characterizing Interfacial Bonds In Hybrid Metal Am Structures, John Ross Linn
Theses and Dissertations
The capabilities of various metal Additive Manufacturing (AM) processes, such as Powder Bed Fusion – Laser (PBF-L) and Direct Energy Deposition (DED) are increasing such that it is becoming ever more common to use them in industrial applications. The ability to print atop a substrate broadens that scope of applications. There is ongoing research regarding the mechanical properties of additively processed materials, but little regarding the interaction between additive material and its substrate. An understanding of the mechanical and performance properties of the AM/substrate interface is imperative. This paper describes a study of the strength properties of AM/substrate interfaces, with …
A Framework And Exploration Of A Cybersecurity Education Escape Room, Justin Charles Snyder
A Framework And Exploration Of A Cybersecurity Education Escape Room, Justin Charles Snyder
Theses and Dissertations
This thesis presents a review of educational-escape-room literature followed by a design-oriented framework (the Snyder Escape Room Framework or SERF) and demonstrates the potential efficacy of escape-rooms in cybersecurity education. Several authors have proposed frameworks and guidelines for game and educational design regarding escape rooms. This work coalesces some of those ideas into a more substantial and comprehensive framework (SERF) that designers can use when developing educational escape rooms. The Snyder Escape Room Framework provides heuristics for goals and objectives, players, activities, context, trajectory design, and evaluation. Additionally, this work describes and analyzes the novel prototyped BYU GCC escape room …
A Cognitive Approach To Predicting Academic Success In Computing, Colby Goettel
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.
An Analysis Of The Size And Impact Of Digital Footprints, Whitney Nielsen Maxwell
An Analysis Of The Size And Impact Of Digital Footprints, Whitney Nielsen Maxwell
Theses and Dissertations
Personal information available online is known as a digital footprint. While many have a digital footprint, few if any, know what it encapsulates or how to control it. Technology and personal information are becoming more intertwined as technology becomes more integrated with everyday activities. Personal information can be defined as details that apply to a person such as race or shopping habits. Shopping habits are considered personal information by many corporations who spend money to track, or even predict purchases of individuals, whereas more traditional forms of personal information are details like gender, birthdate, and home town. With a wide …
Strain Path Effect On Austenite Transformation And Ductility In Q&P 1180 Steel, Jeffrey Grant Cramer
Strain Path Effect On Austenite Transformation And Ductility In Q&P 1180 Steel, Jeffrey Grant Cramer
Theses and Dissertations
The ductility of Q&P 1180 steel was studied with regard to retained austenite transformation under different strain paths. Specimens were tested in uniaxial tension in a standard test frame as well as in situ in the scanning electron microscope (SEM). Then digital image correlation (DIC) was used to compute the effective strain at the level of the individual phases in the microstructure. Stretching experiments were also performed using limiting dome height (LDH) tooling, where specimens were strained in both biaxial and plane strain tension. The experiments were done incrementally, for each strain path, and the retained austenite at each level …
Continuous Permeability Measurement During Unidirectional Vacuum Infusion Processing, David Wayne Hoagland
Continuous Permeability Measurement During Unidirectional Vacuum Infusion Processing, David Wayne Hoagland
Theses and Dissertations
Composite materials have traditionally been used in high-end aerospace parts and low-end consumer parts. The reason for this separation in markets is the wide gap in technology between pre-preg materials processed in an autoclave and chop strand fiberglass blown into an open mold. Liquid composite molding has emerged as a bridge between inexpensive tooling and large, technical parts. Processes such as vacuum infusion have made it possible to utilize complex layups of reinforcement materials in an open mold style set-up, creating optimal conditions for composites to penetrate many new markets with rapid innovation. Flow simulation for liquid composite molding is …
The Application Of Artificial Neural Networks For Prioritization Of Independent Variables Of A Discrete Event Simulation Model In A Manufacturing Environment, Rebecca Pires Dos Santos
The Application Of Artificial Neural Networks For Prioritization Of Independent Variables Of A Discrete Event Simulation Model In A Manufacturing Environment, Rebecca Pires Dos Santos
Theses and Dissertations
The high complexity existent in businesses has required managers to rely on accurate and up to date information. Over the years, many tools have been created to give support to decision makers, such as discrete event simulation and artificial neural networks. Both tools have been applied to improve business performance; however, most of the time they are used separately. This research aims to interpret artificial neural network models that are applied to the data generated by a simulation model and determine which inputs have the most impact on the output of a business. This would allow prioritization of the variables …
Measuring The Robustness Of Forensic Tools' Ability To Detect Data Hiding Techniques, Samuel Isaiah Moses
Measuring The Robustness Of Forensic Tools' Ability To Detect Data Hiding Techniques, Samuel Isaiah Moses
Theses and Dissertations
The goal of this research is to create a methodology that measures the robustness and effectiveness of forensic tools' ability to detect data hiding. First, an extensive search for any existing guidelines testing against data hiding was performed. After finding none, existing guidelines and frameworks in cybersecurity and cyber forensics were reviewed. Next, I created the methodology in this thesis. This methodology includes a set of steps that a user should take to evaluate a forensic tool. The methodology has been designed to be flexible and scalable so as new anti-forensic data hiding methods are discovered and developed, they can …
In Situ Characterization Of Voids During Liquid Composite Molding, Brock Don Zobell
In Situ Characterization Of Voids During Liquid Composite Molding, Brock Don Zobell
Theses and Dissertations
Global competition is pushing the composites industry to advance and become more cost effective. Liquid Composite Molding or LCM is a family of processes that has shown significant promise in its potential to reduce process times and cost while maintaining high levels of part quality. However, the majority of research and information on composite processes have been related to prepreg-autoclave processing which is significantly different than LCM. In order for LCM processes to gain large scale implementation, significant research is required in order to model and simulate the unique nature of the resin infusion process. The purpose of this research …
A Security Evaluation Methodology For Container Images, Brendan Michael Abbott
A Security Evaluation Methodology For Container Images, Brendan Michael Abbott
Theses and Dissertations
The goal of this research is to create a methodology that evaluates the security posture of container images and helps improve container security. This was done by first searching for any guidelines or standards that focus on container images and security. After finding none, I decided to create an evaluative methodology. The methodology is composed of actions that users should take to evaluate the security of a container image. The methodology was created through in-depth research on container images and the build instructions used to create them and is referred to as the Security Evaluation Methodology for Container Images. The …
Selecting Cloud Platform Services Based On Application Requirements, Bridger Ronald Larson
Selecting Cloud Platform Services Based On Application Requirements, Bridger Ronald Larson
Theses and Dissertations
As virtualization platforms or cloud computing have become more of a commodity, many more organizations have been utilizing them. Many organizations and technologies have emerged to fulfill those cloud needs. Cloud vendors provide similar services, but the differences can have significant impact on specific applications. Selecting the right provider is difficult and confusing because of the number of options. It can be difficult to determine which application characteristics will impact the choice of implementation. There has not been a concise process to select which cloud vendor and characteristics are best suited for the application requirements and organization requirements. This thesis …
A Comparison Of Gestures For Virtual Object Rotation, Brandon Michael Garner
A Comparison Of Gestures For Virtual Object Rotation, Brandon Michael Garner
Theses and Dissertations
The fields of virtual reality and gesture-based input devices are growing and becoming more popular. In order for the two technologies to be implemented together, an understanding of gestures in relation to virtual objects and users' expectations of those gestures needs to be understood. Specifically, this thesis focuses on arm gestures for the rotation of virtual objects. Participants in the study were first asked to freely perform an arm gesture they felt should execute a task. Next, participants were asked to perform specific rotation tasks with pre- configured arm gestures on four objects. There were two types of objects: those …
Recognition Of Infrastructure Events Using Principal Component Analysis, Lane David Broadbent
Recognition Of Infrastructure Events Using Principal Component Analysis, Lane David Broadbent
Theses and Dissertations
Information Technology systems generate system log messages to allow for the monitoring of the system. In increasingly large and complex systems the volume of log data can overwhelm the analysts tasked with monitoring these systems. A system was developed that utilizes Principal Component Analysis to assist the analyst in the characterization of system health and events. Once trained, the system was able to accurately identify a state of heavy load on a device with a low false positive rate. The system was also able to accurately identify an error condition when trained on a single event. The method employed is …
Fitplay Games: Increasing Exercise Motivation Through Asynchronous Social Gaming, Dario Carlos Gonzalez
Fitplay Games: Increasing Exercise Motivation Through Asynchronous Social Gaming, Dario Carlos Gonzalez
Theses and Dissertations
Many factors contribute to people's physical inactivity, but among the leading factors is a lack of motivation. Fitness trackers have been shown to encourage an increase in exercise, but they are frequently abandoned within a few short months. For this thesis I developed and asynchronous-play social gaming platform, FitPlay Games, to fill the gap in motivation left by current fitness trackers. By providing users with a variety of asynchronous cooperative and competitive gaming styles, this platform enable them to find a motivation technique that works best for their lifestyle and fitness prowess. The platform encourages prolonged use of fitness trackers, …
A Quantitative Approach To The Identification And Prediction Of Supply Chain Agility, David A. Sheffield
A Quantitative Approach To The Identification And Prediction Of Supply Chain Agility, David A. Sheffield
Theses and Dissertations
As the product-release cycle in the tech industry speeds up, there is more pressure on manufacturers to bring new products to market faster than ever. This puts a great deal of pressure on the suppliers of capital equipment used to manufacture these tech products. The supply chain agility of these suppliers is increasingly important. The purpose of this study is three-fold (1) to develop a methodology that can be used by any firm for measuring and ranking the agility of suppliers and finding the root causes of supplier agility, (2) to develop the first-ever fully quantitative measure of supply chain …
Computing Research In Academia: Classifications, Keywords, Perceptions, And Connections, Sung Han Kim
Computing Research In Academia: Classifications, Keywords, Perceptions, And Connections, Sung Han Kim
Theses and Dissertations
The Association for Computing Machinery (ACM) recognizes five computing disciplines: Computer Science (CS), Computer Engineering (CE), Information Technology (IT), Information Systems (IS), and Software Engineering (SE). Founded in 1947 the ACM is the world's largest society for computing educators, researchers, and professionals. While Computer Science has been a degree program since 1962, the other four are relatively new. This research focuses on understanding the graduate research in four of the five ACM disciplines (CS, CE, IT, and IS) using a large body of thesis and dissertation metadata. SE is not found in the metadata and graduate work in SE is …
A Comparison Of Instructional Strategies For Teaching Entry-Level Welding At The High School Level, Jared Paul Massic
A Comparison Of Instructional Strategies For Teaching Entry-Level Welding At The High School Level, Jared Paul Massic
Theses and Dissertations
The traditional method of teaching welding has remained unchanged for decades. In this model, an instructor gives demonstrations to a class of students and then helps them individually as they practice the techniques of welding. This traditional instructional method has been effective but is time consuming. Due to a significant increase in the demand for skilled welders within the United States, efforts have been made to develop more efficient methods of providing welding instruction. Various electronic welding guidance systems and virtual welding systems have recently been developed. In this study, the researcher addressed two questions 1) Does the use of …
Characterizing The Effects Of Capillary Flow During Liquid Composite Molding, Michael Ray Morgan
Characterizing The Effects Of Capillary Flow During Liquid Composite Molding, Michael Ray Morgan
Theses and Dissertations
As the aerospace industry continues to incorporate composites into its aircraft, there will be a need for alternative solutions to the current autoclaving process. Liquid composite molding (LCM) has proven to be a promising alternative, producing parts at faster rates and reduced costs while retaining aerospace grade quality. The most important factor of LCM is controlling the resin flow throughout the fiber reinforcement during infusion, as incomplete filling of fibers is a major quality issue as it results in dry spots or voids. Void formation occurs at the resin flow front due to competition between viscous forces and capillary pressure. …
Deriving System Vulnerabilities Using Log Analytics, Matthew Somers Higbee
Deriving System Vulnerabilities Using Log Analytics, Matthew Somers Higbee
Theses and Dissertations
System Administrators use many of the same tactics that are implemented by hackers to validate the security of their systems, such as port scanning and vulnerability scanning. Port scanning is slow, and can be highly inaccurate. After a scan is complete, the results of the scan must be cross checked with a vulnerability database to discover if any vulnerabilities are present. While these techniques are useful, they have severe limitations. System Administrators have full access to all of their machines. They should not have to rely exclusively on port scanning them from the outside of their machines to check for …
Integrating Process Mining With Discrete-Event Simulation Modeling, Siyao Liu
Integrating Process Mining With Discrete-Event Simulation Modeling, Siyao Liu
Theses and Dissertations
Discrete-event simulation (DES) is an invaluable tool which organizations can use to help better understand, diagnose, and optimize their operational processes. Studies have shown that for the typical DES exercise, the greatest amount of time is spent on developing an accurate model of the process that is to be studied. Process mining, a similar field of study, focuses on using historical data stored in software databases to accurate recreate and analyze business processes. Utilizing process mining techniques to help rapidly develop DES models can drastically reduce the amount of time spent building simulation models, which ultimately will enable organizations to …
A Simple Method For Evaluating Wear In Different Grades Of Tooling Applied To Friction Stir Spot Welding, Kirtis Frankland Kennard
A Simple Method For Evaluating Wear In Different Grades Of Tooling Applied To Friction Stir Spot Welding, Kirtis Frankland Kennard
Theses and Dissertations
In this study tools consisting of a 5mm cylindrical pin and a 12mm shoulder held by a simple tool holder were used to compare the wear of 11 tooling materials. The objective was to determine if using these tools in a spot welding configuration to simulate friction stir welding could differentiate the potential performance of tooling materials. All tools were made of varying percentages of polycrystalline cubic boron nitride (PCBN), tungsten (W) and rhenium (Re). The materials are referred to herein as GV1, GV2, G1, G2, G3, G4, G5, G6, G7, G8 and G9.
The tools were run to 205 …
Terminological Mediation In Information Technology And Related Fields, Jessica Smith Richards
Terminological Mediation In Information Technology And Related Fields, Jessica Smith Richards
Theses and Dissertations
Terminological dissonance is created by the inherent ambiguity of natural language and compounded by ontological specialization efforts within fields. Terminological dissonance creates high-risk miscommunications in two key areas: within Information Technology as a singular domain, and also between IT and other fields in interdisciplinary projects. A comprehensive literature review revealed a lack of previous effort to acknowledge or solve problems of terminological dissonance within Information Technology. This research provides a comprehensive overview and definition of the terminology mediation space as it relates to Information Technology and adjacent fields. An analysis and verification of the contents and implementation of the terminology …
Void Modeling In Resin Infusion, Mark Wesley Brandley
Void Modeling In Resin Infusion, Mark Wesley Brandley
Theses and Dissertations
Resin infusion of composite parts has continually been reaching to achieve laminate quality equal to, or exceeding, the quality produced with prepreg in an autoclave. In order for this to occur, developers must understand the key process variables that go in to producing a laminate with minimal void content. The purpose of this research is to continue efforts in understanding 1) the effect of process conditions on the resultant void content, with a focus on resin infusion flow rate, 2) applying statistical metrics to the formation, location and size of voids formed, and 3) correlate these metrics with the local …
Service Dependency Analysis Via Tcp/Udp Port Tracing, John K. Clawson
Service Dependency Analysis Via Tcp/Udp Port Tracing, John K. Clawson
Theses and Dissertations
Enterprise networks are traditionally mapped via layers two or three, providing a view of what devices are connected to different parts of the network infrastructure. A method was developed to map connections at layer four, providing a view of interconnected systems and services instead of network infrastructure. This data was graphed and displayed in a web application. The information proved beneficial in identifying connections between systems or imbalanced clusters when troubleshooting problems with enterprise applications.
Friction Bit Joining Of Dissimilar Combinations Of Dp 980 Steel And Aa 7075, Rebecca Hilary Peterson
Friction Bit Joining Of Dissimilar Combinations Of Dp 980 Steel And Aa 7075, Rebecca Hilary Peterson
Theses and Dissertations
Friction Bit Joining (FBJ) is a new technology that allows lightweight metals to be joined to advanced high-strength steels (AHSS). Joining of dissimilar metals is especially beneficial to the automotive industry because of the desire to use materials such as aluminum and AHSS in order to reduce weight and increase fuel efficiency. In this study, FBJ was used to join 7075 aluminum and DP980 ultra-high-strength steel. FBJ is a two-stage process using a consumable bit. In the first stage, the bit cuts through the top material (aluminum), and in the second stage the bit is friction welded to the base …
The Programmatic Generation Of Discrete-Event Simulation Models From Production Tracking Data, Christopher Rand Smith
The Programmatic Generation Of Discrete-Event Simulation Models From Production Tracking Data, Christopher Rand Smith
Theses and Dissertations
Discrete-event simulation can be a useful tool in analyzing complex system dynamics in various industries. However, it is difficult for entry-level users of discrete-event simulation software to both collect the appropriate data to create a model and to actually generate the base-case simulation model. These difficulties decrease the usefulness of simulation software and limit its application in areas in which it could be potentially useful. This research proposes and evaluates a data collection and analysis methodology that would allow for the programmatic generation of simulation models using production tracking data. It uses data collected from a GPS device that follows …
Experimental And Numerical Study Of High-Speed Friction Stir Spot Welding Of Advanced High-Strength Steel, Utsab Karki
Experimental And Numerical Study Of High-Speed Friction Stir Spot Welding Of Advanced High-Strength Steel, Utsab Karki
Theses and Dissertations
With the desire to lighten the frame while keeping or increasing the strength, Advanced High-Strength Steels (AHSS) have been developed for use in the automotive industry. AHSS meet many vehicle functional requirements because of their excellent strength and acceptable ductility. But joining AHSS is a challenge, because weldability is lower than that of mild steels. Friction stir spot welding (FSSW) is a solid state joining process that can provide a solution to the weldability issues in AHSS, but FSSW has not been studied in great detail for this application. In this work, Si3N4 tools were used for FSSW experiments on …
Compressibility Measurement And Modeling To Optimize Flow Simulation Of Vacuum Infusion Processing For Composite Materials, Paul Hannibal
Compressibility Measurement And Modeling To Optimize Flow Simulation Of Vacuum Infusion Processing For Composite Materials, Paul Hannibal
Theses and Dissertations
Out-of-autoclave manufacturing processes for composite materials are increasing in importance for aerospace and automotive industries. Vacuum Infusion processes are leading the push to move out of the autoclave. An understanding of the various process parameters associated with resin infusion is necessary to produce quality product. Variance in compaction, resin, and vacuum pressures are studied, concentrating on developing a compaction pressure profile as it relates to fiber volume fraction. The purpose of this research is twofold: (1) to show and quantify the existence of a resin pressure gradient in compression testing using rigid tooling, and (2) to use measured test data …
Magnetic Holding Of Synthetic Quartz For Precision Grinding, Saudin Basic
Magnetic Holding Of Synthetic Quartz For Precision Grinding, Saudin Basic
Theses and Dissertations
The objective of this research work is to investigate the practicality of magnetic workholding of non-magnetic synthetic quartz during high-speed grinding. This research work is sponsored by Quartzdyne and will be used as the starting point to applying single-piece rounding of its quartz. Hypotheses were created that would permit the authors to conclude that magnets are in fact worthwhile workholders for non-magnetic materials. Designs of Experiments were used to reject or fail to reject the null hypotheses. Experiments were carried out using a custom HAAS lathe, modified into a grinding center with an NSK live spindle, and neodymium-iron-boron magnets used …