Digital Commons Network^™

Multiple-Site Fatigue Cracking Methodology To Assess Structural Integrity Of Aircraft Riveted Panels, Haroldo Chacon

Masters Theses

“Multiple Site Damage (MSD) is the most common source of Widespread Fatigue Damage (WFD) affecting structural integrity of aging aircraft fleets. Therefore, an understanding of its progression, the development of methods to prevent the onset, and the maintenance procedures precluding WFD are important to improve aircraft fleet longevity. A reliable and efficient numerical methodology to perform detailed Multiple Site Damage assessment in riveted structural joints was developed. A probabilistic methodology was employed in conjunction with Monte Carlo simulation technique; the fatigue initiation life at every potential crack initiation site was determined and initial damage scenarios were generated. Probabilistic crack growth …

A Compact Wavelength Meter Using A Multimode Fiber, Ogbole Collins Inalegwu

Masters Theses

“Wavelength meters are very important for precision measurements of both pulses and continuous-wave optical sources. Conventional wavelength meters employ gratings, prisms, interferometers, and other wavelength-sensitive materials in their design. Here, we report a simple and compact wavelength meter based on a section of multimode fiber and a camera. The concept is to correlate the multimodal interference pattern (i.e., speckle pattern) at the end-face of a multimode fiber with the wavelength of the input lightsource. Through a series of experiments, specklegrams from the end face of a multimode fiber as captured by a charge-coupled device (CCD) camera were recorded; the images …

Biochemical Assay Invariant Attestation For The Security Of Cyber-Physical Digital Microfluidic Biochips, Fredrick Eugene Love Ii

Masters Theses

“Due to the devastating global impact that infectious diseases have had, especially in developing countries, the demand for access to adequate resources to combat sickness continues to be a heavy burden. Reliable and affordable diagnostics is a vital first line of defense in fighting outbreaks and providing accurate treatment. Digital microfluidics biochips capable of running multiple diagnostic tests on a single platform are an emerging technology that are increasingly being evaluated as a viable platform for rapid diagnosis and point-of-care field deployment. Although these systems offer many benefits, processing errors are inherent. Therefore, cyber-physical digital biochips are being investigated that …

Seed Modeling Of An Esd Gun Discharge To A Usb Cable, Yang Xu

Masters Theses

“An IC protected by a transient voltage suppression (TVS) diode may fail if the TVS device does not turn on or does not turn on quickly enough, causing the IC to take the full brunt of the electrostatic discharge (ESD) event. Transient simulation models have been developed for ESD protection devices for the purpose of system-efficient ESD design (SEED). The TVS modeling methodology has been improved to better represent the physics that occurs during the TVS response and more accurately predict the interactions between off-chip and on-chip protection devices. Moreover, a complicated test scenario -- an ESD gun discharge through …

Values Of Trust In Ai In Autonomous Driving Vehicles, Ru Lian

Masters Theses

“Automation with artificial intelligence technology is an emerging field and is widely used in various industries. With the increasing autonomy, learning, and adaptability of intelligent machines such as self-driving cars, it is difficult to regard them as simple tools in human hands. At the same time, a series of problems and challenges such as predictability, interpretability, and causality arise. Trust in self-driving technology will impact the adoption and utilization of autonomous driving technology. A qualitative research methodology, Value-Focused Thinking, is used to identify the values of trust in autonomous driving vehicles and analyze the relationship between these values”--Abstract, page iii.

A Meta-Analysis: Gamification In Education, Yalin Wang

Masters Theses

“Gamification has been used in a variety of contexts including education. In order to understand the effects of gamification in education, a meta-analysis was conducted. A bottom-up approach was used to analyze the effects of game design elements on learning outcomes found in the literature search. The result suggests that gamification can enhance student learning outcomes. Elements such as points, leaderboards, competitions, progress bars, feedback, and collaboration have medium to large effect sizes. Gamification also has larger effects on young children in elementary education than learners at other education levels. The study offers suggestions and guidelines for educators on the …

Overcoming The Myth Of The Contemporary “Starving Artist”: An Exploration Into The Fusion And Viability Of A 21st-Century Career In Art And Design, Miranda M. Myles Jackson

Masters Theses

This research explores the myth of the “starving artist” surrounding the pursuit of a career in the arts. Artists are often dubbed as starving due to the pre-conceived notion that careers in art do not provide longevity or financial stability. Due to this stigma, budding creatives are often dissuaded at home, school, or both from pursuing a career doing what they love. Arts programs are often cut and or remain underfunded, mainly due to this biased perception. Research indicates that careers in the arts have expanded exponentially due to its merge with various fields. According to both the STEM vs. …

Living My Best Life Gifting Program, Jessica Gilmore

Masters Theses

Living My Best Life (LMBL) is a qualitative research study that explores how creative products can help provide a positive impact on children. Research shows that various forms of art are utilized in therapy, classroom settings, outreach programs, and in homes to help children overcome complicated, disturbing, and disruptive behavior due to adverse circumstances they have experienced in their life. The research revealed how strategy that utilizes and implements creative products and activities can actually alter the perspective of children in a more productive and optimistic manner. The products serve as long and short-term interventions against negative thoughts and actions. …

Constructing And Experiencing The Medieval Waddenland, Hugh R. Milner

Masters Theses

Part of the intertidal zone along the southeast portion of the North Sea, the Wadden Sea Coast runs from modern Friesland and Groningen in the Netherlands, through Lower Saxony and Schleswig-Holstein in Germany, and up the west coast of Jutland to just past Ribe. This project seeks to understand medieval responses to an environment in constant contact with the sea via documentary and historical sources. The people of the Wadden Sea Coast defined their landscape and their history in part with earthworks and water infrastructure, negotiating control of both anthropogenic and natural environments.

Intelligent Roadside Unit Deployment In Vehicular Network, Xiangyu Xu

Masters Theses

Intelligent Transportation System (ITS) has been an important research area in building the foundational infrastructures of self-driving vehicles and improving traffic efficiency of future transportation systems. Scientists have been hoping to incorporate intelligence into traditional transportation systems to help reduce the risks, accident rates, traffic congestion, and even environmental emissions.

There are many research works that have been focused on the communication part of ITS, such as vehicular networks, which collect data from vehicles and send it to the cloud for analysis. In the vehicular networks, Roadside Unit (RSU) is a key infrastructure as an intermediate layer between the vehicles …

Confronting Wicked Crypto: Wicked Problems, Encryption Policy, And Exceptional Access Technology, Kevin Nicholas Kredit

Masters Theses

Public debate has resumed on the topic of exceptional access (EA), which refers to alternative means of decryption intended for law enforcement use. The resumption of this debate is not a renege on a resolute promise made at the end of the 1990s “crypto war”; rather, it represents a valid reassessment of optimal policy in light of changing circumstances. The imbalance between privacy, access, and security in the context of constantly changing society and technology is a wicked problem that has and will continue to evade a permanent solution. As policymakers consider next steps, it is necessary that the technical …

An Investigation Into The Development Of A Low Cost, Easy To Use Seizure Analysis Tool., Cody Dean

Masters Theses

The need for collaborating and sharing data and research between doctors, researchers, universities and patients has never been more necessary. We are seeing firsthand how a deadly virus can completely devastate the world in a matter of months and being able to react quickly is the top priority. Open source tools are making it possible to share research and learnings about viruses like COVID-19 across countries, industries, and universities and these tools and philosophies extend across all areas of medical research.

The amount of data that is being collected within the medical industry is increasing at an exponential rate and …

A Cfd Study Of Operation Room Air Conditioning: Air Curtain Performance, Spencer Lee Boer

Masters Theses

An operation room is a critical environment when it comes to the safety of patients undergoing surgery. There are a lot of factors that go into reducing Surgical Site Infections (SSI) following a surgery. This comes in the form of cleaning standards, surgical practices, but also environment controls. The characteristics of airflow within an operation room are related to the risk of an SSI. Some of these factors are temperature, velocity, and turbulent air around an open wound which could increase the chance of bacteria or other particles entering the very vulnerable patient. As clean room standards continue to be …

Development Of A Tiny House Design Tool To Increase Safety, Efficiency, And Cost-Effectiveness, Michael Joseph Stratton Ii

Masters Theses

A growing number of people are choosing to live more sustainably, and this is commonly done through living in an extremely small house, also called a “tiny house”. There is no set definition for a tiny house, but it typically refers to a structure less than 500 ft2, sometimes built by the homeowner, and frequently built on a travel trailer.

The popularity of tiny houses has increased over the years due to different television shows, internet videos, and photo sharing websites, but the technical details are rarely covered, which is why this study examines the structural, stability, weight, and thermal …

Modeling The Torque Of Ferrite Nano-Particles As A Ferrofluid Suspended In Liquid To Determine The Electromagnetic Response To Angular Displacement, Jackson Tyler Brennecke

Masters Theses

Inertial sensing is an important part of engineering and technology, especially for determining spatial orientation. Most modern inertial sensing units rely on MicroElectroMechanical systems (MEMS) style gyroscopic sensors to determine angular acceleration. This research investigates a novel gyroscopic sensing technology that uses mechanical precision of magnetic nanoparticles, instead of MEMS, to determine inertial measurements. The only other study on this novel technology proposed a scalar set of equations for relating magnetic field and torque magnitude to the magnitude of angular displacement of the sensor. This research develops the theoretical model into a set of full vector equations, so that the …

Marks The Spot, Timothy Paul Crane

Masters Theses

This thesis is an investigation into the prtoblem of marketing for small businesses with little funds and means for advertisement. Past, present and predicted future methods of marketing prove there is room for improvement in affordability through existing advancements. Literature reviews and case studies explore the most lucrative ways forward. Research also indicates that large numbers of potential consumers are missed by small businesses due to their general lack of embracing newer communication technology such as store apps. This extra support measure provides users with notifications that highlight coupons and deals and has a proven record of success for larger …

Cellular Attachment On Poly(Lactic Acid) For Use In Tissue Engineering, Stephen R. Hunter

Masters Theses

Tissue engineering is a promising new method for organ regeneration. This method can be used to repair damaged tissue, or possibly replace a fully functional organ. In summary, a biopsy is taken from a donor, isolated, then grown onto a framework resembling an organ. Once grown; it is then transplanted into the patient. Over time, the body will degrade the scaffold, leaving the organ or tissue in its place. As this scaffold is present in the body for an extended time; factors like biocompatibility, toxicity, immunogenicity, and structural stability must be researched.

Several polymers have already been researched for use …

Atherosclerosis: Pathology, Role Of Sd-Ldl, Particle Size Characterization Of Sd-Ldl With Multiangle Light Scattering, Akshay Sudhakar Ukey

Masters Theses

Atherosclerosis is an inflammatory disease due to the accumulation of lipids in the inner wall of arteries. As per the report of Center of Diseases Control and Prevention (CDC), 1 in every 4 deaths is due to heart diseases each year. Atherosclerosis occurs when artery walls harden by the buildup of cholesterol, forming multiple atherosclerotic plaques within the aorta (4). Out of the modern medicines available to control cholesterol, statin is amongst the foremost widely used because it is both safe and effective in lowering high risk patients (9). However, usage of high statins dosage typically leads to some mild …

The Power Of Gratitude (A Worship Service), Joe G. Wehunt

Masters Theses

“So then just as you have received Christ Jesus as Lord, continue to live your lives in Him, rooted and built up in Him, strengthened in the faith as you were taught, and overflowing with thankfulness”. The house of God should be overflowing with thankfulness. This overflow should begin in the parking lot and extend all the way inside the building. With the “Power of Gratitude” service, the plan is to outline a worship event that reminds God’s children of the blessings that He has given through His son, Jesus, and to provide a way for God’s children to worship …

Albion Through Malleable Eyes: The Great Migration, Urban Renewal And Missed Opportunities, Demetrius R. Goodale

Masters Theses

Albion, Michigan’s African American community built a robust, diverse, and thriving city in the early 20th century. Jobs were plentiful and wages allowed for healthy communities to sprout up across the city’s landscape. During this period Albion’s overall population more than doubled, and its African American community grew exponentially over the course of six decades. However, for many in the African American community, societal and economic gains were overshadowed by a crippling shortage in viable housing options. Albion’s African American community experienced limited options to help remedy the community’s housing challenges. These limitations were due to discriminatory housing norms and …

Development Of A Single Emitter Ionic Liquid Ion Source Research Platform, Thomas V. Kerber

Masters Theses

A single emitter ionic liquid ion source using porous borosilicate glass was developed. Two emitters with different radii of curvatures were tested using 1-ethyl-3-methylimidazolium tetrafluoroborate (EMI-BF₄). I-V curves of the currents on the extractor electrode and a collector plate were obtained for potential differences between the emitter and the extractor ranging from 0 V to 3500 V. For the first emitter chip, extraction began near 2400 V. The highest emission current measured on the first chip was 80 µA at 3500 V with an interception current on the extractor of 4.86 µA. An new collector plate was used …

Synthesis And Characterization Of Non-Pgm Catalysts For Fuel Cell Applications, Sudharsan Sridhar

Masters Theses

Fuel Cells convert the chemical energy of a fuel and an oxidizing agent into electricity through a pair of redox reactions. Proton Exchange Membrane (PEM) fuel cells convert (efficiency-60%) hydrogen and air to power the electric motors with zero emissions, facilitating the development of environmentally friendly and sustainable automobile technologies. One of the major obstacles for larger commercial viability of Fuel Cells for automobile applications is their cost-effectiveness. Currently, fuel cells use platinum as a catalyst material, which is prohibitively expensive for commercial automobile applications. The development of non-Platinum Group Metal (non-PGM) catalyst materials with similar electrochemical performance to that …

Music Of The World: From Jazz To Hip-Hop, Michael Young

Masters Theses

In this ever-changing world of popular music, we grasp hold of what we enjoy or have delight in. In this document we discuss the highlights of music from the early Jazz era to Hip-hop music in the 21st century. Within general music education we are shifting from the traditional class setting-from where the teacher is imparting knowledge to students to the students teaching students. The classroom instructor is now a facilitator. A new and exciting way for this to happen is through music and popular musics, or music that was deemed popular. Music education-based curricular materials can illustrate the social, …

Appalachian Folk Music In The High School General Music Class, Caitlin Jayne Hetland

Masters Theses

Murder ballads have been a part of the musical traditions of America since the 1700s, when their source materials were brought from Scandinavia, England, and Scotland. Ballads like “Omie Wise,” “Pretty Polly,” and “The Ballad of Tom Dooley” have been recorded by a variety of artists, and still draw new listeners for commercial success. Despite their historic presence in American music, murder ballads are not often included in the school music curriculum. The content is not always appropriate for elementary or middle school students, but high school students are better equipped to deal with the themes and can often be …

Emily Dickinson, The Tyrant, And The Daemon: A Critique Of Societal Oppression, And The Significance Of Artistic Truth, Debra Kue

Masters Theses

This thesis argues that art, for Dickinson, was an alternative system of salvation which her society could not provide her. Unwilling to surrender herself to the mold of her society, the institutional practice of Christianity and gender expectations, Dickinson chose to take ownership of her life through art, which allowed her to develop a personal language to combat the oppressive forces of the world around her. As a conscious “revolutionist of the word” Dickinson embarked on a path of self-discovery that enabled her to conduct a life in self-imposed exile as a means to emancipate herself from the constraints of …

Investigating The Steps In Preparing An Original Song For Distribution, Kaitlyn Ann Majors

Masters Theses

Songwriting has always been a desire of mine. Specifically, writing songs that can be used to bring glory to God through worship, reflection and meditation. There is something so beautiful about bringing intimate moments with God to life through music and then sharing that message publicly for others to engage and participate in. Once the creative process is complete and a song has been composed, what are the steps to take this creation and prepare it for public use and distribution? This process may look very different for those who are already established in the music industry versus artists and …

Composition In The Diatonic Modes: Past And Present Function And A Praxial Curriculum Suggestion, Margaret Cherise Eddy

Masters Theses

The purpose of this curriculum project is to design an online curriculum that presents diatonic musical modes in a way that is memorable, applicable, and beneficial to music education. Although the diatonic modes were discussed theoretically by the ancient Greeks, and the modes were actively used in worship, theory, and composition throughout the Middle Ages and into the early Renaissance era, these modes are only briefly taught as a theoretical principal in advanced theory courses or included in current textbook appendices. The diatonic modes are not usually represented as currently practical in composition and performance, and therefore, this study demonstrates …

A Curriculum For Teaching Collaborative Worship Songwriting Inspired By Village Hymns, Craig Alan Osterhus

Masters Theses

The scriptural injunction to “sing to the Lord a new song” motivates the church to create new worship songs that are Biblically based, musically excellent, and reflective of God’s unique gifting and purpose for the church in its time. Village Hymns, a collective of worship leaders and songwriters serving in South Florida churches, has developed a platform for building skill in collaborative worship songwriting through their CREATE events. Through the experience of hosting over 50 CREATE events and recording three EP CDs, Village Hymns has developed best practices for collaborative worship songwriting. The aim of the case study research was …

The John Allen House And Tryon’S Palace: Icons Of The North Carolina Regulator Movement, H. Gilbert Bradshaw

Masters Theses

A defining feature of North Carolina is her geography. English colonists who founded the first settlements in the east adapted their old lifestyles to their new environs, and as a result, a burgeoning planter and merchant class emerged throughout the Tidewater and coastal regions. This eastern gentry replicated the customs, manners, and traditions of the Old World: donning the latest London fashions, hosting lavish balls, horseraces, and foxhunts, and erecting homes furnished with luxurious appointments. In the Piedmont, in what was then the western frontier, German and Scots-Irish immigrants streamed down the Great Wagon Road in search of similar opportunities. …

Changes In Neural Network Connectivity Of Normal Young Adults In Response To Power Wheelchair Trainer Using Eeg Coherence, Ruby Phung

Masters Theses

The ability to move and explore their surrounding environment plays a critical role in the development of cognitive function in children, especially during early childhood. The lack of independent and autonomous mobility is, therefore, a clear disadvantage for the overall development of children with multiple, severe disabilities. Limited number of studies have been conducted on the impact of power mobility device on this specific population. Previous exploratory and pilot studies showed promising results regarding quantifiable and consistent changes in the electroencephalogram (EEG) of children with multiple, severe disabilities when provided with power mobility training. This study aimed to further extend …