Engineering Commons^™

Safran Seat Attachment System, Craig John Kimball, Tyler Bragg, Lynette Cox

Mechanical Engineering

This final design review (FDR) document outlines the senior design project being carried out by a team of mechanical engineering undergraduate students attending California Polytechnic State University, San Luis Obispo for Safran Seats in Santa Maria, CA. The project originally was to design, build, and test a universal attachment to secure a widebody business class seat to seven aircraft models with different seat track geometry. The goal was to design, document, and create a finished product that fits design, weight, and manufacturing requirements, as well as passes static 9G FWD testing. Structural analysis, manufacturing analysis, FEA, and CAD assemblies will …

Miniaturized Ultraviolet Imager Phase Iii, Bradley D. Albright, Nicolas A. Armenta, Colin W. Harrop

Mechanical Engineering

This document details the work to date, June 9, 2020, done by the Cal Poly Mechanical Engineering senior project team, Miniaturized Ultraviolet Imager: Phase III (MUVI III), sponsored by the University of California, Berkeley – Space Sciences Laboratory (UCB SSL). MUVI III is the third senior project team of an ongoing design, MUVI: the prototype of a 2U sized CubeSat intended to capture aurora images in the ionosphere. The first team, MUVI I, finished development of the UV imager. The second team, MUVI II, designed the mirror mounting and deployable door mechanisms. The goal of MUVI phase III is to …

Fox Factory Bearing Assembly Rundown And Torque Automation Project, David Ethan Daley, Eric Michael Forrester, Christopher Enrique Hansen, Riley Jacob O'Connor

Mechanical Engineering

A machine design was created to partially automate the rundown and torque of a Fox Factory shock bearing housing. This machine is needed at the factory to keep line associates safe by reducing ergonomic strains associated with this stage in the shock assembly process. Due to the lack of applicable torque drivers for this operation, an open ended, geared drivetrain was designed to allow for engagement of the bearing housing while allowing clearance for the shock shaft that the bearing rides on. This open drivetrain is held by a structure of linear rails and bearings to allow the line associate …

Towards Distributed Node Similarity Search On Graphs, Tianming Zhang, Yunjun Gao, Baihua Zheng, Lu Chen, Shiting Wen, Wei Guo

Research Collection School Of Computing and Information Systems

Node similarity search on graphs has wide applications in recommendation, link prediction, to name just a few. However, existing studies are insufficient due to two reasons: (i) the scale of the real-world graph is growing rapidly, and (ii) vertices are always associated with complex attributes. In this paper, we propose an efficiently distributed framework to support node similarity search on massive graphs, which considers both graph structure correlation and node attribute similarity in metric spaces. The framework consists of preprocessing stage and query stage. In the preprocessing stage, a parallel KD-tree construction (KDC) algorithm is developed to form a newly …

Composite Liftwalker For Shurouq, Daniel Martinez, Robert Boyd, Vikram Thridandam, Madeline Faase

Mechanical Engineering

The following document describes the scope of our project and the methods we have deployed in designing and manufacturing a personalized composite LiftWalker for a young woman in Egypt named Shurouq. Our objective is to design a lightweight and durable LiftWalker to improve upon the current product of our project sponsor, Charlie Gutierrez. To accommodate Shurouq’s physical disabilities as well as the limits of transporting the device to her by plane, our team will need to alter the current product’s dimensions, materials, and structure. Through researching similar products and interviewing potential customers, we have compiled engineering specifications to guide the …

Mining User-Generated Content Of Mobile Patient Portal: Dimensions Of User Experience, Mohammad Al-Ramahi, Cherie Noteboom

Research & Publications

Patient portals are positioned as a central component of patient engagement through the potential to change the physician-patient relationship and enable chronic disease self-management. The incorporation of patient portals provides the promise to deliver excellent quality, at optimized costs, while improving the health of the population. This study extends the existing literature by extracting dimensions related to the Mobile Patient Portal Use. We use a topic modeling approach to systematically analyze users’ feedback from the actual use of a common mobile patient portal, Epic’s MyChart. Comparing results of Latent Dirichlet Allocation analysis with those of human analysis validated the extracted …

Effective Communication Message Strategy For Enhancing Traffic Safety In Fresno County: The Role Of Time Horizon, Regulatory Focus, And Perceived Personal Control, Samer Sarofim

Mineta Transportation Institute

This research empirically investigated the differential effect of message framing on message recipients’ attitudes and intended behaviors related to pedestrian, cyclist, and motorist traffic safety practices. The framework empirically investigated time horizon (expansive vs. limited) and regulatory focus (prevention vs. promotion) message framing.

The time horizon in the message can make someone either think of the future (expansive) or the present (limited). For example, an expansive time horizon message communicates that life is long and directs the focus on the future. On the contrary, a limited time horizon message communicates that life is short and directs the focus on the …

Assessing Complete Street Strategies Using Microscopic Traffic Simulation Models, Bernice Liu, Alireza Shams, Jonathan Howard, Serena Alexander, Alex Hughes, Anurag Pande

Mineta Transportation Institute

Authors of this research developed a traffic simulation model for the downtown San Jose network and evaluated five different street redesign and travel demand combinations. This model aids understanding of network-wide effects of changes in street design for local and regional agencies who are interested in implementing complete streets and/or one-way to two-way conversion. The base network may be altered to model and evaluate other complete streets (e.g., road diet) and tactical urbanism (e.g., farmer’s market on city streets on certain days of the week) scenarios. The 3-dimensional animated videos for each scenario are also created to be used for …

The Fresno State Transportation Challenge, Christian Wandeler, Steven Hart

Mineta Transportation Institute

The goal of the “Fresno State Transportation Challenge” was outreach to schools and community engagement, to provide K-8 students opportunities to learn about transportation and transportation-related careers, and to practice 21st century skills by solving a transportation-related issue in their community. Through the pedagogical frameworks of action civics and eduScrum (a method to facilitate self-managed teamwork with a visual board), teachers and students worked on solving issues in their community. They learned design thinking to identify issues and develop solutions while using eduScrum to manage their work. University students from transportation engineering visited the schools regularly to support the K-8 …

Reasons Of Acceptance And Barriers Of House Onsite Greywater Treatment And Reuse In Palestinian Rural Areas, Rehab A. Thaher, Nidal Mahmoud, Issam A. Al-Khatib, Yung Tse Hung

Civil and Environmental Engineering Faculty Publications

© 2020 by the authors. In the last twenty years, house onsite wastewater management systems have been increasing in the West Bank's rural areas. The aim of this research was to reveal, in the context of providing onsite GreyWater Treatment Plants (GWTPs) for wastewater management in the rural communities in Palestine, the local population's perceptions, in the sense of acceptance of and barriers towards such a type of wastewater management, so as to figure out successes, failures and lessons. The data collection tool was a questionnaire that targeted the households served with GWTPs. The findings show that 13% of the …

A Case Study On How Insulated Concrete Forms Can Prevent Structure Loss During Wildfires, Charles Myron Ackley

Construction Management

ICFs are a building material with unique thermal insulating and non-combustible properties that have shown great potential at protecting a structure during a wildfire. To prove the hypothesis that ICFs can effectively prevent structure damage or loss during a wildfire, an analytical case study on an ICF home that survived the Camp Fire was conducted. The goal was to understand how ICFs unique thermal insulating and non-combustible properties protect structures from wildfires and how this assembly system can be a lot more effective than a traditional frame structure. Additional objectives for the project included highlighting the growing threat of wildfires …

Mass Manufacturing 8x20 Tiny Homes For Low Income Housing In Slo, Tyler James Morales

Construction Management

The United States housing prices have been on the rise for years. This increase has led to an extremely large number of citizens in this country who are unable to afford their rent, much less buy a home. One of the many potential solutions to this problem are tiny homes. Tiny homes have been around since the 1850’s but have just recently been thrusted back into the spotlight. Today Tiny Homes is more than a style of housing but a movement to return to simpler times and simpler lifestyles by living out of a much smaller home. Our project goal …

The Relationship Between Bim And Electrical Prefabrication, Donald J. Lipsey

Construction Management

Recently, with the help of Building Information Modeling, prefabrication has become popular amongst electrical subcontractors. This report dives further into the relationship of the two counterparts and analyzes what allows the relationship to be successful. Currently, little information has been published regarding how Building Information Modeling and electrical prefabrication play off of each other. This report serves to provide information to electrical subcontractors that are either looking to start prefabricating or further their prefabrication methods. Analytical methods used consist of online research combined with interviews from three different people at three different electrical subcontracting firms. All interviewees hold different job …

Construction Management Spanish Language Class, Jordan Stephen King

Construction Management

Some research was done by past Cal Poly students into the industry, faculty and student desire for a Spanish Language class through multiple surveys. The results indicated that all parties agreed that a Spanish Language Construction Management class would be beneficial to add to the curriculum. In this project a student at Cal Poly was tasked with creating a Construction Management Spanish Language Class. The deliverables for this project are to provide the Construction Management department with a syllabus, course schedule, thirteen PowerPoints for use as lecture material, thirteen activities for students to apply what they have learned, and thirteen …

Historic Building Renovation In San Francisco; A Business Plan, Robert Michael Courtney, Brendan Kha Hoang

Construction Management

This report explores the history and thought process behind an idea for a historical restoration company based out of San Francisco, California. This is a vital service for both building owners and the public, as historical buildings with deferred maintenance pose a threat to the lives and safety of civilians in the streets below. The city of San Francisco recognized that historical buildings may pose a threat to public safety and recently put an ordinance in place to mandate inspections and repairs of these buildings. There seems to be a gap between firms that profess the ability to assign qualified …

Student Mentorship: An Essential Practice, Jonathan E. Ott

Construction Management

As an industry that relies heavily on strong relationships, contractors must learn to be effective communicators. At California Polytechnic State University, San Luis Obispo (Cal Poly SLO), there are several majors that provide students with a peer mentorship program; however, the Construction Management Department lacks one of these programs. Previous research conducted by Construction Management students at Cal Poly SLO revealed a significant demand for peer mentorship relationships (Gauna, 2017). The purpose of this paper is to determine what logistical approaches should be initiated to provide students with this valuable resource. This research was conducted by utilizing a nine-question survey …

Enforcing Wildfire Prevention Regulations: Evaluating Enforcement Agencies In The County Of San Luis Obispo, Carly A. Hudak

Construction Management

This project aims to evaluate the enforcement of wildfire prevention policies in the County of San Luis Obispo. In the past few years, a series of highly destructive wildfires have ravaged the state of California, leading to scrutiny of wildfire prevention and its enforcement. This study focused on the County of San Luis Obispo to analyze the agencies responsible for enforcing wildfire prevention. In the County of San Luis Obispo, the County Planning and Building Department, County Fire Department, and Cal Fire State Department cooperate to enforce wildfire prevention measures across the County. Personnel from these agencies were interviewed to …

Case Study: Google’S Unique Canopy Styled Construction, Ray A. Cuevas

Construction Management

In today’s rapidly changing world, builders are pushing to implement more sustainable practices and incorporate innovative techniques to integrate green practices into their structures. One of the latest examples of this push towards sustainability is seen in Google’s new headquarters, Charleston East located in Mountain View, California. Combining their widely known mission to provide a positive work environment for their employees with their passion to be more environmentally friendly, Google has set out to create a Living Building with LEED Platinum certification. In order to accomplish this Google has collaborated with Bjarke Ingels Group, Heatherwick Studio, and Hathaway Dinwiddie. The …

Design And Pre-Construction Services For An Outdoor Patio And Pergola, Gavin M. Griffin

Construction Management

Planning a project in any industry is one of the most import steps of the process. In the construction industry, the quality of work completed during the preconstruction phase of a project can be the difference between a successful and unsuccessful project. No one step is more important than the other. This paper outlines the process of designing an outdoor pergola with a permeable paver system as well as providing pre-construction services. First, the design of the structure was created in collaboration with a local non-profit to ensure both feasibility and desirability for both parties. Next, a quantity take-off was …

Preliminary Layout Design Proposal: The Cal Poly Recreation Center, Andrew Christian Garcia

Construction Management

The Cal Poly Recreation Center in San Luis Obispo is a social staple within the boundaries of the university. With plans to undergo a flooring renovation in the second-story exercise area, a new layout of machines and equipment is desired by the administrative and maintenance staff. Accounting for current market demand trends, space, and owner compliance, this report displays the proposed layout for the facility’s fitness area and the required information for a successful product. The following report will present the area’s existing layout design, the available space for remodel, and a preliminary layout design. In addition, the following report …

A Case Study On Achieving Living Building Challenge Certification On The Ucsd Triton Project, Grayson Farnham

Construction Management

This paper consists of a case study conducted on the UCSD Triton Pavilion project, In San Diego, California. The general contractor on this project is PCL Construction in contract with LMN architecture. The case study evaluates the strategies proposed to help this progressive design build project achieve a Living Building Challenge certification and the costs that would be associated with such implementations. Research and communication with integral employees from PCL Construction helped identify key strategies that ultimately caused the project to not pursue LBC certification and opt to choose a LEED platinum certification instead. In summary the size and scope …

Apple Homekit Application And Cost Breakdown, Nicholas E. Fifield

Construction Management

A principle part of the American dream is to own a home. The definition of an American home is constantly changing, and smart home technology gives more functionality and control over a person’s space. With devices updating constantly and with newer devices coming out every day, having an organized, well-connected smart home can define a person’s home. Apple’s HomeKit ecosystem gives users a single application interface to operate smart home technology for an entire, organized home opposed to other similar ecosystems without necessary functions run by other companies like Google or Amazon. Starting or remodeling a smart home can be …

San Luis Obispo Botanical Garden Children’S Garden Shed, Javier Santiago

Construction Management

The San Luis Obispo Botanical Garden (SLOBG) is located on the California’s Central Coast. The garden consists of a total of 150 acres within El Chorro Regional National Park. This project arose because of a shortage of storage within the Botanical Garden grounds. This project specifically aimed to improve the children’s garden section’s storage space. Before the project took place, there was no storage space located within the children’s garden. Preconstruction coordination started in the Fall of 2019. Shortly after, design of the storage space began. Before construction of the storage shed could start, the project site was graded to …

Rodeo Arena Observation Deck, Ryan B. Fiorio

Construction Management

This report details the process that brought about a large deck that was built at the Cal Poly Rodeo Arena by two students, Timothy Smith and Ryan Fiorio. The project itself was over a year in the making, starting from an idea of Ben Londo, the Cal Poly rodeo coach, to a lengthy approval process and lots of time to fundraise the required money. The project was completed in June of 2020. This project used TimberTech composite decking per the request of Ben Londo. It was also built extremely rigid with the use of pony walls instead of posts to …

The Emma Family Backyard Deck – Thousand Oaks, Ca, Christopher Walter Farkas

Construction Management

This paper outlines the planning, design, and construction of an 80 square foot deck/outdoor patio. The main purpose of this project was to assist an elder couple fund and construct a new deck in their backyard. Due to the current world pandemic, COVID-19 the Emma Family was practicing social distancing and adhering to the State and County wide stay at home order. The project plan was to design a deck for Emma family in the design, construction it and receive funding. The deck was a rectangular 8’ x 10’ and raised 6” off the ground. In addition to the deck …

Supply Chain Management: Fragmented Adoption In Practice, Tayler J. Yoshimura

Construction Management

Every day the construction industry develops new ideas and theories toward innovation in increased efficiency and quality for its projects. One method is supply chain management, which focuses on the relationships between partnerships along the supply chain. The theory was first developed in the manufacturing industry and this paper will highlight the reasons behind its fragmented adoption in the construction industry. The overall supply chain typically contains short supply chains that are dismissed upon project completion. Some companies have partially adopted the theory into their work practices but has been unable to fully adopt the theory as a whole. There …

Introducing Sequencing Within The Advanced Scheduling Curriculum, Adam Cole Alvarez

Construction Management

Scheduling is one of the most important factors within the construction industry. The current Advanced Scheduling curriculum addresses how to use the program P6, but not the understanding of how to sequence. This project introduced two new lab activities that focus on the understanding of sequencing while using P6. I chose this project because I have always had an interest in scheduling as it is one of the most important driving factors in construction and after taking Advanced Scheduling in my Junior year I noticed there is a need for understanding sequencing. I wanted to introduce a new curriculum because …

Fitting In: Analyzing The Fit Of Safety Vests In The Construction Industry, Lizette Galvez Puentes

Construction Management

The construction industry continues to be a male-dominated industry; however, recent decades have seen a change of demographic, including an increase of women leadership. With the changing demographics, there is a lack of awareness and proactive integration of properly fitting safety vests to accommodate different body types. A properly fitting safety vest is crucial in upholding the safety of individuals working on a construction site, where certain genders are more frequently caught on jobsite material. These circumstances hinder the purpose and functionality of the safety vest’s primary functions, which, for the wearer, is increased visibility and the comfort to carry …

The Effects Of Computer And Information Technology On Education, Iwasan D. Kejawa

School of Computing: Faculty Publications

In the society of ours, is it true really that computers and information technology have contributed immensely to the way we learn? After observing and reading various educational paraphernalia and scanning the environment research has shown that the educational systems have greatly been impacted by computers and information technology. With the growth of technology, the ways we learn have been improved tremendously. Innovative technologies have contributed to the innovation of learning in the education arena and outside. The traditional ways of conveying instructions to learners have been augmented with the use of computers information technologies. The educational system of our …

Dc Ir-Drop Analysis Of Multilayered Power Distribution Network By Discontinuous Galerkin Method With Thermal Effects Incorporated, Ping Li, Min Tang, Zhi Xiang Huang, Li (Lijun) Jun Jiang, Hakan Bagci

Electrical and Computer Engineering Faculty Research & Creative Works

Due to the temperature-dependent resistivity of power distribution network (PDN) interconnects, a wiser and necessary strategy is to proceed the electrical-thermal cosimulation in order to include the thermal effects caused by Joule heating. As a natural domain decomposition method (DDM), in this article, a discontinuous Galerkin (DG) method is proposed to facilitate the steady-state electrical and thermal coanalysis. With the intention to avoid solving a globally coupled steady-state matrix system equations resulted from the implicit numerical flux in DG, the block Thomas method is deployed to solve the entire domain in a subdomain-by-subdomain scheme. As a direct solver, the block …