Optimization Of Graphene Parameters For The Development Of Supercapacitors, Jessica L. Montgomery

Mechanical Engineering Undergraduate Honors Theses

In the growing market of evolving electronic devices and the sustainable goals of the energy industry, better sources of energy dense storage devices are needed. Carbon based supercapacitors have attracted the attention of research due to the natural properties of high electrical conductivity, chemical and electrochemical stability, and high surface area. The object of this thesis is to expand upon current knowledge of reduced graphene oxide to better understand the effectiveness of the material as electrode in supercapacitors. This thesis will focus on the physical orientation of supercapacitors to further develop a device that will allow a set of supercapacitors …

System-Layout-Dependent Thermally Induced Solder Stress & Reliability Implications, Ange C. Iradukunda

Mechanical Engineering Undergraduate Honors Theses

Electronic flip chip assemblies consist of dissimilar component materials, which exhibit different CTE. Under thermal cyclic operating conditions, this CTE mismatch produces interfacial and interconnect stresses, which are highly dependent on system layout. In this paper, sensitivity analyses are performed using ANSYS FEA to establish how the proximity and arrangement of neighboring devices affect interconnect stress. Flip chip alignment modes ranging from edge-to-edge to corner-to-corner are studied. Results of these FEA studies, demonstrated that closely packing devices together has the effect of making them act as one. This results in a significant increase in the thermomechanical stresses induced on peripheral …

Determining Drag Forces On 3d Printed Shark Skin And The Conditions In Which Drag Forces Are Reduced, Kayla M. Bartnicke

Mechanical Engineering Undergraduate Honors Theses

ABSTRACT

This project was conducted at the University of Arkansas with access to 3D printers and a water tunnel. The project examines drag forces over 3D-printed shark skin. Shark skin was chosen to be studied because of its unique three-pronged denticle shape and the assumption that this unique shape has a purpose, such as drag reduction.

A shark denticle was designed using SolidWorks software, multiplied 164 times creating a total skin area of 17.5 in², and printed using both a MakerBot Replicator 2 3D printer and an Ultimaker 2 Go 3D printer. The shark skin was initially printed …

Gpu Implementation Of Data-Aided Equalizers, Jeffrey Thomas Ravert

Theses and Dissertations

Multipath is one of the dominant causes for link loss in aeronautical telemetry. Equalizers have been studied to combat multipath interference in aeronautical telemetry. Blind equalizers are currently being used with SOQPSK-TG. The Preamble Assisted Equalization (PAQ) project studied data-aided equalizers with SOQPSK-TG. PAQ compares, side-by-side, no equalization, blind equalization, and five data-aided equalization algorithms: ZF, MMSE, MMSE-initialized CMA, and frequency domain equalization. This thesis describes the GPU implementation of data-aided equalizer algorithms. Static lab tests, performed with channel and noise emulators, showed that the MMSE, ZF, and FDE1 show the best and most consistent performance.

Modeling Three Dimensional Ground Reaction Force Using Nanocomposite Piezoresponsive Foam Sensors, Parker Gary Rosquist

Theses and Dissertations

Three dimensional (3D) ground reaction force (GRF) are an essential component for gait analysis. Current methods for measuring 3D GRF involve using a stationary force plate embedded in the ground, which captures the forces as subjects walk across the platform. This approach has several limitations, a few being: it can only capture a few steps at a time, it is expensive to purchase and maintain, it can't reflect forces caused by natural uneven surfaces, etc. Previous research has attempted to develop wearable force sensors to overcome these problems; however, these endeavors have resulted in devices that are expensive, bulky, and …

Integration Of A Complete Detect And Avoid System For Small Unmanned Aircraft Systems, Jared Kevin Wikle

Theses and Dissertations

For unmanned aircraft systems to gain full access to the National Airspace System (NAS), they must have the capability to detect and avoid other aircraft. This research focuses on the development of a detect-and-avoid (DAA) system for small unmanned aircraft systems. To safely avoid another aircraft, an unmanned aircraft must detect the intruder aircraft with ample time and distance. Two analytical methods for finding the minimum detection range needed are described. The first method, time-based geometric velocity vectors (TGVV), includes the bank-angle dynamics of the ownship while the second, geometric velocity vectors (GVV), assumes an instantaneous bank-angle maneuver. The solution …

Evaluating A Personal Stress Monitoring System, Sneha Gogineni

Theses and Dissertations

Now-a-days, Life is generally much more stressful than in the past. "Stress" is the word that we use when we feel that we are overloaded mentally in our thoughts and wonder whether we can really cope with those placed upon us. Sometimes, stress gets us going and they are good for us but at other times, it could be the cause to undermine both our mental and physical health. The way we respond to a challenge can be considered as a kind of stress. Part of our response to a challenge is physiological and affects our own physical state. When …

Wakefield Analysis Of Superconducting Rf-Dipole Cavities, Subashini De Silva, Jean Delayen

Physics Faculty Publications

RF-dipole crabbing cavities are being considered for a variety of crabbing applications. Some of the applications are the crabbing cavity systems for LHC High Luminosity Upgrade and the proposed Electron-Ion Collider for Jefferson Lab. The design requirements in the current applications require the cavities to incorporate complex damping schemes to suppress the higher order modes that may be excited by the high intensity proton or electron beams traversing through the cavities. The number of cavities required to achieve the desired high transverse voltage, and the complexity in the cavity geometries also contributes to the wakefields generated by beams. This paper …

Applying Kaizen To University Teaching Through Weekly Course Evaluation, Ingo Kregel

International Conference on Lean Six Sigma

Current evaluation standards in German higher education institutions (HEIs) most often do not lead to measurable quality improvement. The purpose of this paper is to critically evaluate whether Kaizen can be a useful methodology to improve the quality of teaching on course level and intensify the exchange and discussion between lecturers and learners.

From The Head To The Heart: A Case Study Of The Start-Up Year For Lean Six Sigma In University College Dublin, Michael Sinnott

International Conference on Lean Six Sigma

The purpose of this paper is to reflect back on the first year of running a Lean Six Sigma programme in University College Dublin. This year begins after the decision to run a process enhancement and culture change project using Lean Six Sigma has been taken, a high level implementation plan signed off, and the UCD Agile support unit created.

Stakeholder Theory: Implications For Total Quality Management In Higher Education, Louis Hickman, Mesut Akdere

International Conference on Lean Six Sigma

No abstract provided.

Development, Testing And Implementation Of Traffic Signal Performance Measures At A Local Governmental Agency, Jay Alan Grossman

Indiana Local Technical Assistance Program (LTAP) Technical Reports

The testing and implementation of traffic signal performance measures at a local government agency revolves around three main performance measures: signal detector anomaly identification, signal split failures reports and red light running identification. Signal detector anomaly identification used the Kolmogorov-Smirnov test to compare current and past detector operation and was shown to be effective in identification of anomalies. Three different types of split failure reports were utilized to determine operational issues on signal systems. Long-term longitudinal, corridor scale, and single intersection split failure reports were implemented on active signal systems and found to be effective in determining and correcting problems. …

Preface, Chad Laux, Jiju Antony, Elizabeth Cudney

International Conference on Lean Six Sigma

Preface for the Proceedings of the 4th International Conference on Lean Six Sigma for Higher Education.

Leadership’S Guide For Achieving Sustainable Lean Six Sigma Program Change In Higher Educational Institutions, Sandra Furterer

International Conference on Lean Six Sigma

This paper will highlight the current research, practices and an innovative framework for enhancing Lean Six Sigma leadership engagement, and program success in higher educational institutions.

The Elimination Of Waste In Higher Education: Prescriptions For Doing The Right Things The Right Way, Michael Hayden, Randy Peters

International Conference on Lean Six Sigma

The authors defined waste in higher education and describe proven strategies to reduce waste, from and engineering and technical background, informed by HE administrative perspectives. It is important to categorize waste and then prioritize it because effort should be spent on eliminating the waste that has the greatest potential to improve the efficiency of the entire system. Waste can only be dealt with by someone with the span of control over that waste.

A Continuous Improvement Journey In The Higher Education Sector: A Case Study Of A University In Ireland, Seamus O’Reilly, Joe Healy, Tom Murphy, Ronan O’Dubhghaill

International Conference on Lean Six Sigma

The paper’s purpose is to contribute to a developing literature in relation to Continuous Improvement (CI), incorporating Lean Six Sigma (LSS) in Higher Education Institutions (HEIs). This paper follows on from a previous study which focused on the initial steps taken by an Irish university on its CI journey by discussing the next steps, detailing the findings from these.

Utilizing Six Sigma Methodology For Training Undergraduate Student For Conducting Global Field Research, Kritika Chopra, Shweta Chopra, Chad Laux

International Conference on Lean Six Sigma

With the increase in demand for the global research, scholars in engineering and technology discipline do not hesitate in taking up global opportunity for conducting research. Training the next generation for such international research opportunity is key and involving undergraduate students’ beyond study abroad is important.

A Value-Stream Mapping Success Story: Mba Recruiting Process Improvements, Paulette S. Alexander, Janyce Brennan Fadden

International Conference on Lean Six Sigma

The benefits of Value Stream Mapping (VSM) in higher education are highlighted through this case study which demonstrates that by using the practices of VSM, the graduate recruiting process can be successfully improved by engaging faculty and staff in change events and with rigorous follow up.

Learning Lean Six Sigma: A Student Reflective Study, Chad Laux, Ludmila Nunes

International Conference on Lean Six Sigma

Lean Six Sigma has become a worldwide effort at continuous improvement. As it becomes more prevalent, the teaching and learning of LSS has not caught up with current trends. The purpose of this paper is to understand how students learn Lean Six Sigma in a classroom environment.

How To Use Lean Six Sigma To Improve Service Processes In Higher Education: A Case Study, Na Li, Susan Ely, Chad Laux

International Conference on Lean Six Sigma

The purpose of this paper is to explore how to use Six Sigma to improve the service process in higher education.

Development Of A Directional Bone Reaming System., Richard J Ackermann

Electronic Theses and Dissertations

Preparation of long bones such as the femur or tibia for placement of intramedullary devices for the treatment of fractures usually involves reaming with a series of central cutters driven by a drill-like device with a flexible shaft over a guide wire. The reamers sequentially enlarge the intramedullary canal into a tunnel of circular cross-section and a diameter appropriate for the procedure. The current technology is concentric, meaning that the system is self-centering within the original intramedullary canal and the expansion is symmetric with respect to the original centerline. A novel system for laterally deflecting the head of a 12mm …

A Novel Mra-Based Framework For The Detection Of Changes In Cerebrovascular Blood Pressure., Yitzhak Atakilt Gebru

Electronic Theses and Dissertations

Background: High blood pressure (HBP) affects 75 million adults and is the primary or contributing cause of mortality in 410,000 adults each year in the United States. Chronic HBP leads to cerebrovascular changes and is a significant contributor for strokes, dementia, and cognitive impairment. Non-invasive measurement of changes in cerebral vasculature and blood pressure (BP) may enable physicians to optimally treat HBP patients. This manuscript describes a method to non-invasively quantify changes in cerebral vasculature and BP using Magnetic Resonance Angiography (MRA) imaging.

Methods: MRA images and BP measurements were obtained from patients (n=15, M=8, F=7, Age= 49.2 …

Examining The Effects Of Macrophage Populations On Cancerous Tumor Growth., Grace E. Mahlbacher

Electronic Theses and Dissertations

The most abundant immune cell types of the tumor microenvironment macrophages recruited there by tumor-eluted factors. The role of these immune cells in tumor progression, and the interplay between tumor and immune cells is an emerging field of research with potential for novel treatment strategies. Here, a TIE2 expressing macrophage (TEM) subtype is integrated into a virtual tumor model. Within the 2D microenvironment, the TEM will differentiate from an extravasated monocyte precursor, congregate around the abluminal side of the vasculature in response to a chemoattractant gradient, secrete cytokines which favor differentiation of a separate angiogenic macrophage subtype [1]. The effects …

Effect Of High Cationic Flocculant On Anaerobic Digestion Of Municipal Wastewater., Prathap D. John

Electronic Theses and Dissertations

Anaerobic digestion (AD) of municipal sludge is a widely used stabilization process at municipal wastewater treatment plants. It is highly effective in reducing sludge volume and produces methane gas which is used as fuel in the wastewater plant. Following digestion sludge is sent to a centrifuge to separate the solids from the liquids. Louisville MSD adds flocculent to material in the centrifuge to better coagulate the solids, thereby aiding in separation of the solids from the liquids. The potential for further AD, COD reduction, and methane generation of the liquid effluent from the centrifuge was unknown, particularly in regards to …

Investigation Of Influential Factors On Selecting An Engineering Major., Paige A. Miller

Electronic Theses and Dissertations

This thesis evaluates the factors that freshman engineering students at the University of Louisville are taking into consideration when deciding on their major within engineering. The outcome of the research is expected to help to shape the syllabus of the ENGR 110 course, which is a mandatory class for all freshman engineering students. ENGR 110 is comprised of course lectures, department presentations, and company presentations. Currently, both the department and company presentations are held outside of course times. The influential factors identified by this research may help shape the course so that these factors are discussed thoroughly about each major …

Design Baseline Document: Mini Baja Frame, Michael Luke Scoggins

Undergraduate Honors Capstone Projects

Our objective as the Mini Baja Frame team is to design and implement a prototype vehicle frame that is both cost-effective and competitive in an all-terrain racing environment. This vehicle must be able to endure the trials of the Society of Automotive Engineers (SAE) Mini Baja competition. An effective frame will contribute to the complete Utah State University Mini Baja Team objectives by efficiently integrating the components produced by the drivetrain and the suspension engineers. In addition, this competition is a means for us as students to gain valuable, tangible experience in the engineering design process.

Integrated Literature Review Of Information Technology Leadership In Higher Education: Implications For Total Quality Management, Louis Hickman, Mesut Akdere

International Conference on Lean Six Sigma

The current shortage of highly skilled employees across the country continues to be a concern for our higher education (HE) institutions. Information technology (IT) is used in a variety of ways to expand the reach of education, from distance education, simulation technology, Massively Open Online Courses (MOOCs), and more. Additionally, public HE institutions face flat and decreasing funding. IT departments are responsible for identifying transformational change opportunities, implementing technologies that expand the reach of our universities, and operating efficiently with flat funding. Therefore, identifying effective IT leadership practices to enable change and reduce costs is vital to success for modern …

Resolving Stakeholder Challenges In The Higher Education System, Godson A. Tetteh

International Conference on Lean Six Sigma

The purpose of this paper is to study how to resolve conflicts among major the stakeholders using the Kano et al. (1984) model so as to improve the quality of higher education (HE).

A Lean Six Sigma Approach For Improving Utilization Of Walk-In Tutors, Sandra Furterer, Kellie Schneider, Michael Key, Yusheng "Johnny” Zhang

International Conference on Lean Six Sigma

The purpose of this study is to improve the utilization of walk-in tutors at the University of Dayton.

Lean Six Sigma In Academic Institutions—Uk Vs. Rest Of The World, Stephen Anthony, Jiju Antony

International Conference on Lean Six Sigma

The main purpose of this paper is to illustrate examples of the current maturity of universities both in the UK and abroad when implementing a continuous improvement programme or change agenda using techniques such as Lean Six Sigma.