Engineering Commons^™

Footsteps Power Generator, Faisal Alonazi, Mohammed Aljohani

All Undergraduate Projects

This project was motivated by the need for a device that would generate electricity from human motion, especially footsteps. Electricity is a very important resource in our daily life. There are numerous sources from which generate electrical energy. The major sources of energy include but are not limited to coal, natural gas, petroleum, and nuclear energy. Most of these sources have adverse effects on the environmental inclusion such as air pollution; for example, from coal energy generation plants which then cumulatively leads to effects such as increase in rates of global warming. This project seeks to establish an environmentally friendly …

General Aviation Modular Electric Tow Bar, Devon Tandberg

All Undergraduate Projects

In general aviation, pilots use either a tow bar or a tug to maneuver their planes to and from its parking place. A tow bar is a lightweight human powered device that allows a pilot to push and pull his/her pane by themselves using human power. A tug is a similar device, except much bigger and heavier, and is electrically powered, allowing for an easier time maneuvering a plane. The downside to a tug is since they are bigger and heaver, they cannot be taken with a pilot on a trip. The goal of this project was to combine the …

R/C Mini Baja Car: Drive Train And Steering, Carlton R. Mcdonald

All Undergraduate Projects

The purpose of the Baja R/C Car is to compete in the ASME eFX competition in a series of events to prove the functionality of the vehicle. This series of events includes the Slalom, Drag, and Baja race, The Slalom is a test in the steering capability of the vehicle, the Drag is a test in the acceleration of the vehicle in a straight line, and the Baja puts all factors together in a race to test every component of the vehicle. This project is about building an R/C car that not only functions, but also has maximum performance capabilities …

Fire Fighter Robot, Sultan Alhajrri

All Undergraduate Projects

The Fire Fighter Robot has been made in this project which can fight against the fire and that should be controllable over WiFi from the particular distance. The main objective of the design was that to fabricate the frame of the robot on which the whole top part of the robot can sit. The main constraint was that high-level skills were required for the implementation of some sections. The bottom part of the robot was first designed on the SOLIDWORK and Fusion360 software. the Whole dimensions were set for the bottom part so that the water tank, camera and the …

Modular Hardtop, Dennis Fedorchuk

All Undergraduate Projects

Title and Author: Modular Hardtop by Dennis Fedorchuk

Abstract:

A Jeep Wrangler Hardtop is a product that becomes inconvenient during the hot summer days when someone wants to remove the top for the next few months of sunshine. The question that comes up is “Where does someone store the top in the offseason?”. Unless an individual has a hardtop hoist in the garage, the hardtop will take up half of the garage. What if that individual does not want to drill holes in the ceiling or needs the floor space? That is where the Modular Hardtop comes into play. This …

Ev Clutch System, Jacob Yordy

All Undergraduate Projects

This project’s goal was to add a clutch system to an electrical vehicle at Central Washington University. The project’s second goal was to have the clutch system improve the electrical vehicle’s fuel economy for Electrathon events. Electrathon uses an equivalent mpg formula to determine an electrical vehicle’s “fuel economy.” Based on the amount of energy in kilo-Watt hours in a gallon of gas, Electrathon assumes each car uses 0.026 gallons of “gas” in the hour long race and the mpg value given to an electrical vehicle is based on the distance the vehicle travels in the race. Analyzes and problem …

Mechanical Footstep Power Generator, Mohammed Saleh Aljohani, Faisal Alonazi

All Undergraduate Projects

Mechanical Footstep Power generator

By Author: Mohammed Aljohani

Abstract

Modern technology is focusing on newer and better sources of energy. Among the important areas are power generation methods since electricity has become part of our lives. Various researchers have conducted surveys to find out the feasibility of converting renewable kinetic energy into electricity. Some of the works done in the past emphasized the selection of suitable materials and power generation systems designs that appear complicated and expensive. To ensure there is cost efficiency and energy efficiency better power generation systems need to be embraced.

The footstep power generator is a …

Outrigger Project, Jose Reyna, Tyler Hoffman

All Undergraduate Projects

Outrigger Project

Author: Jose Reyna ([email protected])

Co-Author: Tyler Hoffman ([email protected])

Mentors: Neil Hauff ([email protected]), Dr. Choi ([email protected]), Professor Pringle ([email protected]), Professor Bramble ([email protected]), Dr. J ([email protected])

Abstract

Agricultural areas sometimes experience cold weather in early spring and risk damage to crops due to freezing. To combat this issue, farms can employ temporary fans to keep the blossoms from freezing. The design of a 17-foot-tall wind turbine mounted on 7-foot-wide trailer can help mix the warm air that’s above the wind turbine with the colder air that’s below to keep the crop from freezing. These wind turbines can produce …

C-Molecules: Molecular-Guided Surgery With Fluorescence Imaging, Riley Karp, Joshua Gutow, William Wolfe-Mcguire

ENGS 89/90 Reports

Surgeries may cost lives if performed inadequately, which is why tools such as fluorescence guided surgery exist to improve surgical outcomes. Fluorescence guided surgery (FGS) is the practice of injecting patients with a fluorescent molecule that, in combination with highly sensitive cameras, allows surgeons to clearly identify complex biological structures. While beneficial in procedures such as endoscopy and gallbladder surgery, this technique is most notable for its role in complex cancer surgeries where misidentifying the boundaries of a tumor can have deadly consequences. Although FGS has the potential to revolutionize cancer treatment, highly sensitive imaging systems are necessary to identify …

Compassionate Flexibility And Self-Discipline: Student Adaptation To Emergency Remote Teaching In An Integrated Engineering Energy Course During Covid-19, Laura A. Gelles, Susan M. Lord, Gordon D. Hoople, Diana A. Chen, Joel Alejandro Mejia

School of Engineering: Faculty Scholarship

The global pandemic of COVID-19 brought about the transition to Emergency Remote Teaching (ERT) at higher education institutions across the United States, prompting both students and the faculty to rapidly adjust to a different modality of teaching and learning. Other crises have induced disruptions to academic continuity (e.g., earthquakes, hurricanes), but not to the same extent as COVID-19, which has affected universities on a global scale. In this paper, we describe a qualitative case study where we interviewed 11 second-year Integrated Engineering students during the Spring 2020 semester to explore how they adapted to the transition to remote learning. Our …

Assessing 3d Printability Of Bioinks, Nicole Ramirez

Honors Undergraduate Theses

The field of tissue engineering (TE) is continuously improving through the use of additive manufacturing techniques (AM) such as three-dimensional (3D) bioprinting. The 3D bioprinter has significantly gained attention in the TE field because it is more efficient than regenerative medicine and is readily available as opposed to organ transplants. Working like a conventional 3D printer, the 3D bioprinter is able to dispense material layer by layer from the bottom up with the printing head able to move in the X, Y, and Z direction. This movement allows for the fabrication of structures with complex geometries. In this study, the …

A Generalized Low Order Model For Vortex Shedding From A Tandem Cylinder Arrangement Using Delay Coupled Van Der Pol Oscillators, Michael Soroka

Honors Undergraduate Theses

A generalized low order model (LOM) for the fluctuating lift coefficient caused by vortex shedding from a tandem cylinder pair is proposed to expand upon models from previous authors. This model could provide a reduced computational time method for collecting qualitative and quantitive data from a tandem shedding pair. A delay coupled system with sufficient bifurcation characteristics is developed to account for the different flow regimes (extended-body, reattachment, and co-shedding) which occur as cylinder spacing is varied. Coefficient and parameter fitting is performed to fit experimental data. Finally, results and physical interpretations of the interactions in the model are discussed. …

Investigating Factors Affecting Road Freight Overloading Through The Integrated Use Of Blr And Cart: A Case Study In China, Yikai Chen, Kai Wang, Yu Zhang, Renjia Luo, Shujun Yu, Qin Shi, Wenting Hu

Civil and Environmental Engineering Faculty Publications

Overloading of road freight vehicles accelerates road damage, creates unfair competition in the transport market, and increases safety risk. There is a dearth of research on the mining of data of highway Freight Weight (FW), and this paper therefore aims to discover factors affecting road freight overloading based on highway FW data, with a view of developing strategies to mitigate such occurrences. A comprehensive sampling survey of road freight transportation was conducted in Anhui Province (China). Vehicle Characteristics (VC), Operation Mode (OM), and transportation information from a total of 3248 trucks were collected. In order to take advantage of the …

Multilevel Reorder Strategy-Based Supply Chain Model, Hesamoddin Tahami, Hengameh Fakhravar

Engineering Management & Systems Engineering Faculty Publications

We investigate the stochastic integrated inventory model wherein the buyer's lead time demand follows the mixture of normal distributions. Due to the high acquisition cost of land, we assume that buyer's maximum permissible storage space is limited and therefore adds a space constraint to the respective inventory system. Besides, it is assumed that the manufacturing process is imperfect and produces defective units, and hence each lot received by the buyer contains percentage defectives. The paper also considers controllable lead time components and ordering cost for the system. Based on lead-time components, a multilevel reorder strategy-based supply chain model is developed …

Modeling, Designing And Applying Machine Learning Algorithms For Driver Drowsiness Detection, Mohsen Babaeian

CGU Theses & Dissertations

Driver drowsiness has been a significant hazard resulting in various traffic accidents. Therefore, monitoring this condition is crucial not only in alerting drivers, but also in avoiding fatal accidents. Many research studies propose new systems to reduce the number of drowsiness-related injuries and fatalities. The ultimate goal for a drowsiness detection system is to detect the drowsiness on time and minimize the system or environment errors to avoid false readings, such as studying physiological signal processing patterns. These potentially life-saving systems must operate in a timely manner with the highest precision. Researchers proposed various methods based on driving pattern changes, …

High Order Explicit Semi-Lagrangian Method For The Solution Of Lagrangian Transport And Stochastic Differential Equations, Hareshram Natarajan

CGU Theses & Dissertations

A semi-Lagrangian method is developed for the solution of Lagrangian transport equations and stochastic differential equations that is consistent with Discontinuous Spectral Element Method (DSEM) approximations of Eulerian conservation laws. The method extends the favorable properties of DSEM that include its high-order accuracy, its local and boundary fitted properties and its high performance on parallel platforms for the concurrent semi-Lagrangian and Eulerian solution of a class of time-dependent problems that can be described by coupled Eulerian-Lagrangian formulations. Such formulations include the probabilistic models used for the simulation of chemically reacting turbulent flows or particle-laden flows. Motivated by the high-fidelity simulation …

Early Engineering Experience (E3) Initiative, Danielle Nicole Carter, Rafael E. Landaeta

Engineering Management & Systems Engineering Faculty Publications

This Work in Progress paper details an initiative designed to broaden exposure and attract increased interest in the study of engineering of a minority-serving institution (MSI) with a plurality of races represented. The University's student population where this initiative is being implemented consists of 26.2% African American and 6% that identify with two or more races. In contrast, the College of Engineering in this University is 20% African American; the freshmen class makes up 6.3% of this figure. By USDOE standards, this characterization is indicative of a predominantly white institution (PWI). According to the Bureau of Labor Statics, underrepresented minorities …

Systemic Risk Management Plan For Electronic Medical Records (Emr): Why And How?, Ziniya Zahedi, Faisal Mahmud, Cesar Pinto

Engineering Management & Systems Engineering Faculty Publications

Electronic patient data use and handling are critical issues in terms of privacy, confidentiality, security, and the Health Insurance Portability and Accountability Act (HIPAA) regulations. The risks associated with electronic patient data are not limited to identity theft but rather include a person’s social, economic, and psychological well-being. However, there have not been many studies that have focused on the associated risk factors that could lead to these situations. This paper identifies those risks related to electronic patient data breaches by means of a grounded theory approach and develops a systemic risk management plan that enables engineering managers and risk …

Systemic Methodology For Cyber Offense And Defense, C. Ariel Pinto, Matthew Zurasky

Engineering Management & Systems Engineering Faculty Publications

This paper describes a systemic method towards standardization of a cyber weapon effectiveness and effectiveness prediction process to promote consistency and improve cyber weapon system evaluation accuracy – for both offensive and defensive postures. The approach included theoretical examination of existing effectiveness prediction processes for kinetic and directed energy weapons, complemented with technical and social aspects of cyber realm. The examination highlighted several paradigm-shifts needed to transition from purely kinetic-based processes and transition into the realm of combined kinetic and cyber weapons. Components of the new method for cyber weapons are cyber payload assessment, effects identification, and target assessment. The …

A Framework Of International Competencies For Systems Engineers, Annlizé L. Marnewick, Holly A.H. Handley

Engineering Management & Systems Engineering Faculty Publications

In the course of their career, many systems engineers are likely to interact with engineers of other nationalities as they collaborate on large, complex projects and system of system problems. These partnerships are necessary to support international goals, such as those for sustainable development. System engineers may even work onsite in other countries where they must adapt to different styles of doing business. This requires a set of global skill sets for cooperating and decision making, as well as basic social skills for interacting with the local community. These global skills can be included in a graduate level system engineering …

The Impact Of Human Assurance On Satellite Operations, Holly Handley, Dan Heimerdinger, Unal Tatar (Ed.), Adrian V. Gheorghe (Ed.), Omer F. Keskin (Ed.), Jean Muylaert (Ed.)

Engineering Management & Systems Engineering Faculty Publications

Mission assurance is a method to guarantee mission success against a known set of risks; mission assurance is generally represented as a probability against a threshold of acceptable performance. Human assurance can be considered as the likelihood of acceptable operator performance given a set of conditions that include the operator, the system, and the environment. Standard mission assurance models tend to assume a qualified crew, but do not include other aspects of the internal or external environment that may impact the reliability of the human operator. A human assurance model can be created that allows the exploration of the variability …

Continuous Otm 33a Analysis Of Controlled Releases Of Methane With Various Time Periods, Data Rates And Wind Filters, Robert S. Heltzel, Mohammed T. Zaki, Aron K. Gebreslase, Omar I. Abdul-Aziz, Derek R. Johnson

Faculty & Staff Scholarship

Other test method (OTM) 33A has been used to quantify emissions from natural gas sites since it was introduced by the Environmental Protection Agency (EPA). The method relies on point source Gaussian (PSG) assumptions to estimate emissions rates from a targeted site or source. However, the method often results in low accuracy (typically ±70%, even under conducive conditions). These accuracies were verified with controlled-release experiments. Typically, controlled releases were performed for short periods (15–20 min) under atmospheric conditions that were ideal for effective plume transport. We examined three methane release rates from three distances over various periods of time ranging …

Design Of Banner Tow Mechanism For Bush Plane, Kyle Ciarrone, Ivan Martin, Rishabh Gadi, Tyler Brandt

Williams Honors College, Honors Research Projects

The 2019-2020 AIAA DBF objective was to design, build, and test a banner-towing bush plane that carries wooden passengers and luggage. Senior members on the team undertook the creation of the banner tow mechanism subsystem as their senior design project on behalf of the design team due to the challenge of its mechanical design and the aerodynamic considerations regarding its placement and enclosure aboard the aircraft. The competition as well as access to campus resources were canceled due to COVID-19, so full testing and integration of the mechanism was not achieved. However, the engineering design process was experienced from the …

A Preliminary Study Of A Graphene Fractal Sierpinski Antenna, Alberto Boretti, Lorenzo Rosa, Jonathan Blackledge, Stefania Castelletto

Conference papers

We provide a preliminary study of a Graphene fractal antenna operating at THz frequencies with the opportunity to modulate the emission. There are a number of advantages of the fractal design, namely multiband/wideband ability, and, a smaller, lighter and simpler configuration for higher gain, that can benefit from the coupling with Graphene, the thinnest and strongest of materials exhibiting very high electrical conductivity and tunability. This paper proposes a conceptual background for the study and presents some preliminary results on the electromagnetic emission simulations undertaken

Tolerance Intervals For Time Series Models And Specifying Trimming/Winsorizing Cutoffs, Kedai Cheng

Theses and Dissertations--Statistics

Confidence intervals are used to capture a parameter of interest, usually a mean or a quantile, at a specified confidence level. Prediction intervals are another practical interval that aim at making sound predictions of future values with some confidence. Although these are useful inference tools, neither of them gives people a plausible range of the sampled population. Tolerance intervals are such an inference tool that captures a specified proportion of the sampled population at a predetermined confidence level. In this dissertation, tolerance intervals for an autoregressive process with order p are constructed. In addition, a method of utilizing tolerance interval …

การปรับปรุงวิธีการจำแนกพรรณไม้ในเมืองด้วยภาพถ่ายทางอากาศความละเอียดสูง ด้วยการใช้รูปตัดตามแนวลองจิจูด และข้อมูลเสริมจากการสำรวจด้วยไลดาร์ทางอากาศ, สุภาภรณ์ รักษาล้ำ

Chulalongkorn University Theses and Dissertations (Chula ETD)

การศึกษาเรื่องการกระจายตัวของต้นไม้ และการจำแนกพรรณไม้ในพื้นที่เมืองมีความจำเป็นอย่างมาก ต่อการบริหารจัดการและติดตามดูแลสิ่งแวดล้อมในเขตเมืองอย่างยั่งยืน งานวิจัยนี้นี้มีวัตถุประสงค์เพื่อปรับปรุงวิธีการจำแนกพรรณไม้ในเมืองด้วยภาพถ่ายทางอากาศความละเอียดสูงด้วยวิธีการจำแนกแบบต้นไม้การตัดสินใจ (Decision Tree) โดยใช้รูปตัดตามแนวลองจิจูด (Longitudinal Profiles) และข้อมูลเสริมจากการสำรวจด้วยไลดาร์ (LiDAR) ทางอากาศเพื่อจำแนกต้นไม้ 7 ชนิดในพื้นที่ศึกษาบริเวณสวนสาธารณะสวนหลวง ร.9 กรุงเทพมหานคร พบว่าการปรับปรุงวิธีการดังกล่าวจากงานศึกษาเดิมสามารถจำแนกต้นไม้ที่มีลักษณะต้นเดี่ยวและกลุ่มทั้ง 7 ชนิดได้อย่างถูกต้อง โดยได้ค่าความถูกต้องโดยรวมเฉลี่ย (Overall Accuracy) 78.7% สังเกตได้ว่าค่าความถูกต้องโดยรวมของการจำแนกมีค่าน้อยกว่างานอ้างอิงที่รายงานค่าความถูกต้อง Overall Accuracy ที่ระดับ 88.9% เนื่องจากลักษณะทางกายภาพของต้นไม้ทั้ง 7 ชนิด มีลักษณะใกล้เคียงกันและแยกออกจากกันได้ยากกว่างานอ้างอิงที่ศึกษาต้นไม้ในพื้นที่ศึกษาเพียงแค่ 3 ชนิด ในอนาคตหากมีการปรับปรุงวิธีการจำแนกด้วยการลดอิทธิพลจากผู้ทดลองและใช้วิธีการเรียนรู้เชิงลึก (Deep Learning) คาดว่าจะสามารถช่วยหาเงื่อนไขของการจำแนกที่ดีที่สุด (optimal criteria) และสามารถจำแนกต้นไม้ที่มีลักษณะใกล้เคียงกันให้ถูกต้องมากยิ่งขึ้นได้ อย่างไรก็ตามลัพธ์ที่ได้จากการวิจัยครั้งนี้ให้ค่าความถูกต้องอยู่ในเกณฑ์ที่ยอมรับได้ ซึ่งสามารถนำไปใช้เพื่อช่วยการบริหารจัดการต้นไม้ในพื้นที่ศึกษาอื่นทีมีพืชคล้ายกันได้อย่างมีประสิทธิภาพ

Aqueous And Oil Products From Hydrothermal Liquefaction Of Manure Digestate, Kenzie Burns

Honors Theses

Hydrothermal liquefaction is a promising thermochemical waste-to-energy (WtE) technology for conversion of wet biomasses, such as manure and digested manure, into value-added products, namely energy-rich biofuel and a nutrient-rich aqueous product. WtE technologies can address environmental issues relating to overproduction of organic wastes and increasing dependence on fossil fuels, which leads to climate change. HTL has not been implemented on a commercial scale, in part due to the uncertainty regarding specific reaction pathways for different feedstocks and ideal conditions for production of the most valuable products.

This research investigates the compositions of the aqueous and oil products from HTL of …

Business Continuity Planning For A Medium-Sized Hotel Under Covid-19 Outbreak, Arunlak Tangtanapaiboon

Chulalongkorn University Theses and Dissertations (Chula ETD)

Business Continuity Planning is a subjective conceptual framework prominently used in operations related to supply chain, information technology, or governmental organizations. In this research, we have applied the concept of business continuity planning to a service business during the COVID–19 outbreaks, whose aim is to determine the business continuity objective with the maximum operational tolerable period. The proposed framework has been evaluated based on the ANOVA Test of a guest's service questionnaire of a hotel in Rayong, Thailand. We find that, by reducing business operating cost via staff working hours reduction and limiting service functions of the hotel to the …

Spatial Indexing For System-Level Evaluation Of 5g Heterogeneous Cellular Networks, Roohollah Amiri, Eren Balevi, Jeffrey G. Andrews, Hani Mehrpouyan

Electrical and Computer Engineering Faculty Publications and Presentations

System level simulations of large 5G networks are essential to evaluate and design algorithms related to network issues such as scheduling, mobility management, interference management, and cell planning. In this paper, we look back to the idea of spatial indexing and its advantages, applications, and future potentials in accelerating large 5G network simulations. We introduce a multi-level inheritance based architecture which is used to index all elements of a heterogeneous network (HetNet) on a single geometry tree. Then, we define spatial queries to accelerate searches in distance, azimuth, and elevation. We demonstrate that spatial indexing can accelerate location-based searches by …

Cyber-Informed: Bridging Cybersecurity And Other Disciplines, Char Sample, Sin Ming Loo, Connie Justice, Eleanor Taylor, Clay Hampton

Electrical and Computer Engineering Faculty Publications and Presentations

A recent study by Cybersecurity Ventures (Morgan 2018), predicts that 3.5 million cybersecurity jobs around the world will be unfilled by 2021. In the United States, the demand for professionals with cybersecurity expertise is outpacing all other occupations (NIST 2018). These reports, along with many others, underpin the need for increasing workforce development initiatives founded in cybersecurity principles. The workforce shortage is across all cybersecurity domains, yet problems continue to persist, as the lines between combatants and non-combatants are blurred. Combating this persistent threat, which is a 24/7 operation, requires a more aggressive and inclusive approach. Higher education institutions are …