Digital Commons Network^™

Feasibility Of Utilizing Autonomous, Trenchless Tunneling Technology, Thomas Arthur Fuentez

Construction Management

The construction industry as a whole has not increased its productivity level as much as other industries in the world. Professionals are constantly trying to think of new ideas and methods to improve the efficiency of construction through new technology. One area in which productivity needs improvement, is in land development. Trenching for underground utilities and services uses a lot of time in a project’s schedule as well as costs which can be reduced with the use of autonomous, trenchless tunneling technology such as the “BADGER”, (RoBot for Autonomous unDerGround trenchless opERations). This technology is being designed to use a …

Develop An Mep Based Scheduling Learning Module With Industry Support And Guidance To Understand The Impact On The General Contractor, Andy S. Rios

Construction Management

The Construction Management (CM) program at Cal Poly, San Luis Obispo is recognized as one of the best construction programs in country. The curriculum does an extraordinary job at teaching how to utilize software and technology to create a project schedule. The one thing that the curriculum lacks is learning sequencing of events when it comes to scheduling, and where to look to obtain this information. Although learning sequencing for scheduling is hard to teach because it comes with years of industry experience, it is important to have a basic understanding of how things come together to create a functioning …

Creating A Pull Planning Guide For Industry Use, Michael B. Avila

Construction Management

The construction industry is quickly making Pull Planning sessions a commodity only the largest companies can afford due to expensive consultants and the common perception of a complicated process. Pull Planning does not need to be complicated but can be quickly implemented by all types of companies utilizing extensive research completed on The Last Planner System. The benefits of Pull Planning include creating buy-in to the plan, making hand-offs known, and creating reliability and trust from the key Players on a project. As the demand for a more productive construction project rises, it is increasingly important for the scheduling methods …

Documentation Of Concrete Slabs Prior To Pours, Peter D. Riley

Construction Management

Concrete slabs in multi-level commercial building projects contain many components that become no longer visible once concrete has been poured. As building designs advance and continue to locate components in concrete, it is important to document what these slabs contain in order to verify accurate craftsmanship and allow for improved future construction workflows and building modernizations. This paper explores current industry needs for proficient documentation as well as practices to achieve this. A case study was conducted, testing four devices that analyzed feasibility factors for realistic implementation by a contractor such as cost, interoperability, and level of skill required for …

Joy Playground Project, Atascadero California, Nick Vollucci

Construction Management

Parents for Joy is a group of parents and families of children with special needs in and around the small town of Atascadero, California. The group is working on designing and building a playground that accommodates the needs of their loved ones. This playground will have features that are accessible to people of all degrees of mobility and agility, and that promotes safety and inclusivity.Mission Statement: On their website, Parents for Joy provides the following mission statement: “Parents For Joy is a group of parents, families, and friends living in and around the small town of Atascadero, who have children …

Truth, Lies, And Misdeeds At Mauritius: The Story Of The Schooner Industry, Paul J. Michaels

The Forum: Journal of History

No abstract provided.

Foundational Dissent: The 1965 Quota Controversy, Emily Taketa

The Forum: Journal of History

No abstract provided.

Not All Your Neighbors Are Free: Community Building With Incarcerated Folks In San Luis Obispo, Gianna Bissa

sprinkle: an undergraduate journal of feminist and queer studies

The American criminal justice system is rooted in white supremacist ideology that is predicated on the murder, displacement, exploitation, and marginalization of people of color. Scholars and activists recognize the American prison system as a modern form of slavery. Only three miles away from Cal Poly’s campus, the California Men’s Colony State Prison (CMC) operates as one of thirty-four state prisons in California. Nearly 4,000 men, trans women, and nonbinary people are being held at the CMC. Not only can mass incarceration be identified as one of the most dreadful state projects that violates human freedom, but also non-incarcerated community …

What Advantage Does Difference Make? Leveling The Imperial Playing Field, Daniel Heinz

sprinkle: an undergraduate journal of feminist and queer studies

In this article, I revisit the last ten years of international sport policies on gender testing in order to revise normative constructions of the athletes’ bodies. Specifically, I focus on the International Association of Athletics Federation’s (IAAF) new regulation from 2018 governing the eligibility of certain female athletes with differences of sexual development accompanied by elevated levels of natural testosterone. I argue that the IAAF testosterone regulation is based on a colonial continuity of upholding gender norms and racial hierarchies.

Duocel Metal Foam Display Cases, Kate Goldsworthy, Katherina Prodanov, Benjamin Swanson, Syed Hasan

Mechanical Engineering

This Final Design Review (FDR) report outlines the senior design project that was conducted by a team of four mechanical engineering students at California Polytechnic State University-San Luis Obispo for ERG Materials and Aerospace Corporation. The goal of this project was to design displays that showcase the properties of ERG’s Duocel® foam at tradeshows and client meetings. To better understand the needs of our sponsor, the team researched Duocel®’s capabilities, related technologies, and relevant standards and regulations. With this information, we further defined the problem by creating a problem statement and a set of engineering specifications through a Quality Function …

Insulated Solar Electric Cooker With Phase Change Thermal Storage Medium, Justin Brett Unger, Nathan Robert Christler, Matthew Weeman, Marcus Edward Strutz

Mechanical Engineering

This final design review document outlines the senior design project carried out by a team of four mechanical engineering students at the California Polytechnic State University – San Luis Obispo under the sponsorship of Dr. Peter Schwartz of the Cal Poly Physics department. The aim of this project was to improve upon the design of previously developed Insulated Solar Electric Cookers (ISECs) by adding a thermal storage system to allow for quicker cook times and the ability to cook food at non-peak solar hours. The team’s goal was to develop a working prototype utilizing a phase change medium as the …

Framed Human Powered Vehicle Frame, Keyanna Brielle Henderson, Brendon Howard Morey, Kyra Noelle Schmidt, Austin Patrick Henry

Mechanical Engineering

The following is the Final Design Review (FDR) Report for Framed, a team tasked with designing and fabricating the frame of the 2018-2019 Cal Poly Human Powered Vehicle (HPV) Club bike. The bike is to be raced at the 2019 World Human Powered Speed Challenge in Battle Mountain, Nevada with the goal of breaking the American collegiate speed record. The purpose of the FDR Report is to introduce the project’s background and objectives, discuss the final design, and present the results of manufacturing and testing. Prior to beginning work on the design of the frame, the group conducted extensive research …

Vaccine Cooler For The Global Poor, Benjamin J. Larson, Cooper E. Gibson, Eilbron Younan, Cody R. Volk

Mechanical Engineering

Cal Poly physics professors Peter Schwartz and Nathan Heston approached the Solar Freeze team with the problem that remote communities in Africa have limited access to modern-day medicine or vaccines. They suggested that we try and design a cooling device that can keep vaccines cold for multiple days at a time while the medicine is transported to remote villages. Currently, there are vaccine cooler products on the market, but most of them are very expensive or lack portability. Peter and Nate have tasked the Solar Freeze team to come up with a less expensive solution that is also portable and …

Dynamic Shifting Of Virtual Network Topologies For Network Attack Prevention, Lenoy Avidan

Master's Theses

Computer networks were not designed with security in mind, making research into the subject of network security vital. Virtual Networks are similar to computer networks, except the components of a Virtual Network are in software rather than hardware. With the constant threat of attacks on networks, security is always a big concern, and Virtual Networks are no different. Virtual Networks have many potential attack vectors similar to physical networks, making research into Virtual Network security of great importance. Virtual Networks, since they are composed of virtualized network components, have the ability to dynamically change topologies. In this paper, we explore …

Ac Direct Drive Led Lighting Using Low Cost Analog Components, Miles Head

Master's Theses

This project explores the rapidly expanding area of AC direct drive for LED lighting. AC LED driving does not use typical DC-DC converter-based driving but uses semiconductor switches and a linear regulator to activate a number of LEDs proportional to the input voltage at any given time. This allows bulky, expensive magnetics to be eliminated from the system. The goal of this project was to design a scaled-down physical AC LED direct drive system to validate the conclusions of methods for improving efficiency from a previous investigation that found minimizing voltage across the linear regulating MOSFET led to higher efficiency …

Usb-C Power Adapter For Dc House Project, Tyler G. Starr, Ezzeddeen Gazali

Electrical Engineering

Despite the importance of electricity and the impact it has on our daily lives, many people around the world still live without this essential utility today. According to the International Energy Agency (IEA), approximately 1.1 billion people in the world did not have access to electricity in 2017. The DC House Project at Cal Poly aims to provide electricity to people living in rural areas by directly utilizing DC energy generated from renewable or human powered sources without the need for DC-AC conversions. However, one significant issue is the lack of a standardized DC wall socket. Standards for AC wall …

Autonomous Vehicles Operating Collaboratively To Avoid Debris And Obstructions, Toan T. Le, Cole W. Oppenheim, James H. Gildart, Kyle M. Bybee

Mechanical Engineering

The purpose of this project is to demonstrate the safety and increased fuel efficiency of an automated collision avoidance system in collaborative vehicle platooning. This project was cosponsored by Daimler Trucks North America headquartered in Portland, Oregon, as well as Dr. Birdsong, and Dr. DeBruhl of Cal Poly. The mechanical engineering team consists of Cole Oppenheim, James Gildart, Toan Le, and Kyle Bybee who worked in coordination with a team of computer engineers. Vehicle platooning is a driving technique to increase the fuel efficiency of a group of vehicles by following a lead vehicle closely to reduce the drag experienced …

Adjustable Seating Systems, Grace Timken, Zachary Dworaczyk, Jasper Lewin, Eric Voss

Mechanical Engineering

The Adjustable Seating Systems team designed and prototyped a collapsible and nestable seat for use in transit vehicles to create more free space for more passengers and cargo. Our team is the second senior project group to have worked at solving this problem. The previous team established a unique seat folding method that is currently pending patent approval. Our team’s responsibility was to improve the ease of use and overall hardware design of the entire seating system. This document captures the efforts that our team has performed to organize an approach to completing a full design and working prototype this …

Danny’S Recumbent Bike Accessibility Device Final Design Report, Joseph J. Lee, Huy Nguyen, Jack Mcatee, John Kulick

Mechanical Engineering

The purpose of this document is to fully define our design solution and explain our manufacturing and testing results. Our project’s goal is to find a way to allow Danny Knutson, a retired Navy pilot and incomplete quadriplegic with limited use of his arms and an impaired sense of balance, to enter and exit his recumbent tricycle without any discomfort for him or his aide. We completed multiple interviews with Danny, patent research, existing product research, and other technical literature research in order to fully understand the problem. We synthesized this information to create a concrete list of customer wants …

High Strollers, Braeden Hammond, Morley Perrin, Reid Bartels, Juan Rodriguez

Mechanical Engineering

This report documents the final product of Jonathon’s new lightweight stroller. The Mechanical Engineering team from Cal Poly, High Strollers, began the project to create a lightweight stroller for the project sponsor, Nina Aguayo, and her son, Jonathon Aguayo, in Fall of 2018. Jonathon is diagnosed with Delayed Brain Development and Hypotonia with some characteristics of Cerebral Palsy. He has a 50lb high intensity stroller to go to and from school. Mrs. Aguayo needed a stroller that is easier to transport while still meeting all of Jonathon’s needs. The re-designed stroller will make leisurely outings for Mrs. Aguayo and Jonathon …

Go With The Flow, Scott Weinhardt, Priscilla Ng, Ben Rydberg, Ritika Makhijani

Mechanical Engineering

This Final Design Review (FDR) report outlines the Fuel System Flow Analysis senior project completed by the presenters listed. Included is research about Solar Turbines’ needs, and objectives for our project, our design decision process and final design, manufacturing, design verification report, final results, and suggestions moving forward with this experiment. The goal of the project is to identify stable pressure fields throughout the Solar Turbines fuel delivery system. Specifically, the optimal placement for taking measurements downstream of the main and pilot fuel control valves. The data is used to validate the accuracy of computational fluid dynamic (CFD) models that …

Comparative Thermal Ecology Of Coastal And Inland Pacific Rattlesnakes (Crotalus Oreganus), Hayley Layne Crowell

Master's Theses

Global biodiversity is declining as a direct result of anthropogenic climate change. Ectothermic species have become focal organisms for studying the ecological effects of altered climates due to the clear relationship between environmental temperatures and ectotherms’ basic physiological functions. Historically, examinations of these effects have focused heavily on heliothermic lizards, and most others have tended to focus on single populations or sympatric species within a single community. Addressing the longterm energetic implications of environmental temperature variation will provide valuable insight into the cascading physiological effects that certain populations or species may experience as a result of altered climates.

In this …

Universal Bike Suspension Design, Ernesto Huerta, Gregory Ryan Ritter, Chris Michael Fedor, Michael Wu

Mechanical Engineering

Cal Poly Bike Builders (CPBB) is a student club at Cal Poly helping students design and fabricate their own bicycles. Currently, club members build rigid frames and mountain bikes with only front-suspension–commonly referred to as a “hardtail”. As more students join the club, interest grows in building full-suspension mountain bikes (FSMTB). Designing and manufacturing a mountain bike rear-suspension system requires a diverse skillset and a substantial time commitment. As a result, individual efforts building FSMTB have proven unsuccessful. The scope of this project is to develop a defined method and necessary tools such that all CPBB members can efficiently build …

Graduate Internship Report - Fowler High School, Victor Evans

Agricultural Education: Graduate Internship Reports

This internship/project report includes validation documents required in meeting the quality criteria for secondary-level programs of instruction in agriculture. The documents are concurrently used for the Agriculture Incentive Grant review process at Fowler High School conducted by representatives of the California Department of Education. The internship included the construction of a facility to house and care for fair livestock. Accompanying the project report are photos illustrating the construction steps and educational processes utilized to complete the project.

Left Atrial Model, Borna Sobati, Sarah Porello, Tess Pate

Biomedical Engineering

The objective is to produce an electrophysiological model of an adult human left atrium. This model will be used to test mapping probe catheters used for locating cardiac arrhythmias against current technology used in practice. Dr. Chris Porterfield requested this model and other physicians or probe catheter manufacturers may also use this product in the future. Dr. Porterfield also discussed the possibility of future senior project groups using the model as a bench test for designing new catheter tips. The model will precisely simulate electrical behaviors of the heart in normal as well as arrhythmic conditions. Ideally, the model will …

On-Demand Label Production, Robert A. Zimmerman

Master's Theses

The production and approval process for the various labels used in clinical trials wastes significant time and resources through the need to outsource label production or rely on large reams of pre-cut label stock for each revision throughout the process. An in-house, on-demand label printing and cutting system is a potential remedy to this waste. Previous work by Cheadle et al. resulted in a functional electomechanical prototype of the label cutting aspect of this research, capable of rudimentary linear cuts. In this continued research, emphasis was placed on improved label cutting capabilities and creating PC control software for label design. …

Comparison Of Lqr And Lqr-Mrac For Linear Tractor-Trailer Model, Kevin Richard Gasik

Master's Theses

The United States trucking industry is immense. Employing over three million drivers and traveling to every city in the country. Semi-Trucks travel millions of miles each week and encompass roads that civilians travel on. These vehicles should be safe and allow efficient travel for all. Autonomous vehicles have been discussed in controls for many decades. Now fleets of autonomous vehicles are beginning their integration into society. The ability to create an autonomous system requires domain and system specific knowledge. Approaches to implement a fully autonomous vehicle have been developed using different techniques in control systems such as Kalman Filters, Neural …

Investigating The Talbot Effect In Arrays Of Optical Dipole Traps For Neutral Atom Quantum Computing, Sergio Aguayo

Physics

Quantum computers are devices that are able to perform calculations not achievable for classical computers. Although there are many methods for creating a quantum computer, using neutral atoms offers the advantage of being stable when compared to other methods. The purpose of this investigation is to explore possible optical dipole trap configurations that would be useful for implementing a quantum computer with neutral atoms. Specifically, we computationally investigate arrays of pinholes, the diffraction pattern generated by them, and the onset of the Talbot effect in these traps. We manipulate the radius of the pinholes, the number of pinholes in the …

The Timber Buckling Restrained Brace Frame, Jessica Resta

Architectural Engineering

With the increasing awareness on the topic of earthquake resistance, efficient, cost-effective, and environmentally friendly solutions in the structural field are on the rise. The purpose of this report is to investigate the Timber Buckling Restrained Brace (TBRB), a new lateral-resisting element made of steel and lumber, applicable in residential and small commercial units. In addition to the TBRBs’ materials being readily available, the braces are easy to manufacture, reducing overall costs of production and transportation. The brace, made partly of wood, has also a low environmental impact when compared to other lateral force resisting elements like concrete shearwalls or …

Evidence Of Authority: A Case Study On The Certified Meeting Professional Accreditation, Mary Hansen

Experience Industry Management

The continuously evolving experience industry is proving to be a growing field when it comes to the planning of corporate events and meetings. Professional certifications allow for corporate event planners to test their knowledge of best practices for the future of companies. The purpose of this study was to examine how the Events Industry Council (EIC) administers and markets the Certified Meeting Professional (CMP) accreditation to corporate event planners in the experience industry. Research for this study was gathered using a case study analysis established by the researcher, which highlighted professional certifications and the benefits they have on industry-related professionals. …