Digital Commons Network^™

Analysis And Optimization Of Colorimetric Nanosensors For Rapid Detection Of Microbes In Water, Ruby A. Lang

Master's Theses

Access to safe water is a basic human right recognized by the United Nations General Assembly in 2010 (WHO, 2020). However, a least 2.2 billion people globally still are without safely managed water services meaning they use a drinking water source that can be contaminated with faeces (WHO, 2020). With such a pressing global health issue, it is clear that improvement to water systems is important and required in the Agenda 2030 Sustainable Development Goals (SDGs). However, to improve water systems and prove they are safe water sources, water quality testing must occur. A solution to this issue is the …

Altering An Epoxy-Amine Thermoset's Performance Through Varying Mix Ratios, Kiersten M. Smith

Master's Theses

Epoxy resins are used in a number of different industries and therefore have application-specific material requirements, from satellites that require materials that operate in space, to paints and coatings that require high scratch resistance and mechanical durability, to medical devices, designed to be in continuous contact with biological fluids. Commercial epoxy products come with manufacturer’s information explaining the epoxy properties and recommended preparation processing conditions, which may include epoxy resin to curing agent mix ratio (Part A : Part B), cure time, and cure temperature, for example. Due to proprietary reasons, it can be difficult to understand why these values …

Pier Portal, Alec W. Hardy

Master's Theses

The Pier Portal marine monitoring system is an internet controlled underwater camera that will enable students, researchers, and the general public the ability to monitor underwater marine life and ocean conditions. Installed at Cal Poly’s Center for Coastal Marine Science pier at Avila Beach, California, the camera can be commanded in real-time to raise or lower to any position between the top of the pier and the bottom of the ocean floor, while providing a live-stream video to the operator and general public. This thesis effort focused on the integration of the various subsystem components through software, and the development …

Planning For Pollinators, Encouraging Biodiversity For Agriculture Resiliency, Sebastian Brian Cardoza

Master's Theses

Pollinators are essential to food production globally. Without them, the production of food becomes increasingly difficult, time consuming, and costly. Unfortunately, due to the rapid changes to our earth's physical and climatic structure millions of species are becoming classified as threatened, endangered or extinct. Among these declining species are pollinating insects such as Aphis mellifera (honeybee) and other native species. This is due to a phenomenon known as colony collapse disorder (CCD) and other native bees. The decline indicates that the future habitability of earth may be in jeopardy. The solution to this crisis is to expand the habitat of …

Surface Autonomous Vehicle For Emergency Rescue, Max Emerick, Ryan Shields, Christopher Feickert, Raymond Impara

Mechanical Engineering

The goal of this document is to clearly define the problem parameters and project objectives and to clearly describe the design process, planned final design, and manufacturing and testing procedures for the senior design project of Team 26: SAVER -- the Surface Autonomous Vehicle for Emergency Rescue. This is both for the purpose of project planning and for clear communication between all parties involved in the project.

The objective of the SAVER project is to develop a proof of concept for an autonomous maritime search and rescue vehicle for aiding in man-overboard missions. To accomplish this goal, a list of …

Corrosion Prevention, Matthew Walker

Physics

In Insulated Solar Electric Cooking (ISEC), heating is done by passing current through a chain of diodes directly connected to a solar panel (Gius et al, 2019). It is crucially important that the wires remain conducting, but not conduct to any metal surface that might short the heating circuit. Corrosion of any wires will cause a loosening of the mechanical (twisted) wire connection and could result in a loss of electrical connection completely, or undesired increased resistance.

Graduate Internship Report- Pioneer Valley High School, Natalie Baldwin

Agricultural Education: Graduate Internship Reports

This internship and project report includes validation documents required in meeting the quality criteria for secondary-level programs of instruction in agriculture. The supporting material includes information to receive state and local funding, outline the goals and objectives of the program, along with an overview of Pioneer Valley High School, the agriculture program and the community.

"Knotted Tubes" High Rise Residential Tower, Roman Lara Iv

Architectural Engineering

Knotted Tubes is an 800' residential tower designed by a team of two third year architecture students and one graduate architectural engineering student in the two-quarter high-rise design studio partnered with Skidmore, Owings, & Merrill LLP. The report documents it's design origins and narrative evolution throughout the studio's duration, as well as the design process and final iteration of the whole system, focusing on the structural system and tectonic integration.

Tension Cranes, A Close Collaboration Of Architects And Engineers, William R. Adam, Madigan Smith

Architectural Engineering

This set of images and studies proves to show that architects and engineers can indeed work closely to produce amazing and beautiful results. This result came in the form of a project proposal for a high – rise residential tower located in the heart of San Francisco. The team elected to utilize a highly efficient system of cables in order to cantilever over the edges of the site and optimize the air space, make powerful vistas to increase residential value, and to form an elegant structural system holding everything together. In this paper, the design process is explained into engineering, …

Analysis Of Burning Wood In The Transient State And The Application To Structural Design, Roberta Veliz, Kimberly Guzman

Architectural Engineering

Determining the extent of the contribution of exposed timber on compartment fire dynamics in open floor plans is a complex process. Designers traditionally used compartmentalization design methods which create spaces where flashover is likely, given the fuel load and ventilation conditions. However, due to the large geometric dimensions and spread of fuel, fires in open floor plans are more likely to remain as localized or traveling fires. As such, an understanding of not only ignition potential but also flame spread is critical to characterizing the contribution of exposed timber. An integral step in characterizing the potential contribution is through an …

Chiedza Stewardship Center, Robert Wayne Garland

Architectural Engineering

Journeyman International (JI) is a non-profit organization that supports humanitarian projects in countries all around the world by pairing design professionals and overseeing the design and construction of the projects. The Chiedza Stewardship Center is the first phase of a project supported by East African Power and Foundations for Farming. The project is planned to include 200 hectares of a solar farm, 50 homesteads, and a community center including a stewardship center. This project and this report focus on the structural design of the stewardship center. This stewardship center will allow Foundations for Farming to be able to teach local …

Lilypaaaad - Structural Design, Katelyn Smith

Architectural Engineering

This report tells the story of the structural design process of the LilyPAAAAD tower. The highlights of this process include precedent studies, 2-D structural analysis studies, hand calculations, and drawings. Precedent studies gave insight into unknown possibilities and helped discover how other engineers achieved their design goals. Projects like Sendai Mediatheque and the HSBC Tower are innovative solutions to unique design criteria. 2-D structural studies revealed how the braced frame and outrigger systems worked. By changing member stiffness and studying the load path, the members that contributed the most to resisting the load could be identified. Hand calculations were essential …

Wine History Project Pavilion, Douglas Mcarthur

Architectural Engineering

The Wine History Pavilion Project is a continuing endeavor of Cal Poly students working on an exhibitive, traveling structure for the San Luis Obispo community. The project started during the 2019 Fall Quarter in the interdisciplinary Integrated Project Delivery (IPD) Studio and has progressed to the detailed design stage for its eventual fabrication and installation. This report discusses the detailed design stage that 4th year Architectural Engineering student, Douglas McArthur, worked on.

Vertical Veins: Digital Commons Reflection, Ryan J. Millward, Nicole L. O'Connor

Architectural Engineering

The SOM High Rise Studio was a collaboration between 3^rd year Architecture students and primarily 4^th year Architectural Engineering students. The studio consisted of 20 weeks, with consistent check points marked by SOM partner reviews. The overall aim of the collaboratory nature of the studio was to expose each discipline to the decision-making process of the other to better facilitate understanding of the overall system and narrative of the high-rise tower.

Each quarter had a distinct goal that was the focus of submittals and reviews. Winter Quarter was primarily focused on the form finding aspect of our design …

The Aloe: High Rise Schematic Design And Analysis, Tony Duc Nguyen, Lilliann Lan Lai

Architectural Engineering

The authors of this document are architectural engineering (ARCE) undergraduate students from California Polytechnic State University, San Luis Obispo (Cal Poly). They joined the 2020 Skyscraper Collaboratory as part of the ARCE course 415: Interdisciplinary Capstone Project. This course emphasizes the analysis and evaluation of interdisciplinary challenges associated with integrating the design and construction processes to deliver a project with respect to the design, quality, and performance expectations for a client or presented criteria. The course was taught in collaboration with industry partners and associates from the global architectural, urban planning, and engineering firm Skidmore, Owings & Merrill (SOM). Instruction …

Dodecahedron Housing Tower - Collaborative High Rise Design, Michael Ayers

Architectural Engineering

This Senior Project includes the integrated architectural and structural design of a 744'-0" tall housing tower located at the corner of Market St.& Van Ness Ave. in San Francisco, CA. The concept of this tower revolves around the tessellation of dodecahedron modules that provide the template for all structure and architectural elements within the building. The 20-week long course focused on the full development of this high rise building including its urban context, performative envelope, global structural performance as a tall building, foundation systems, and integration with architecture.

Same Polytechnic College - Phase Zero, Amber Sutherland, Hester Lui, Nicole O'Connor

Architectural Engineering

The Same Polytechnic College, located in Same (Sah-may), Tanzania, is an on-going project that has been worked on by approximately 600 Cal Poly students over the past decade. The college is being designed for the Mbesese Initiative for Sustainable Development (MISD), a nonprofit organization working towards alleviating poverty in rural East Africa through the expansion of access to education. As an interdisciplinary team of architectural engineering, architecture, and landscape architecture students, the master plan of the college was refined and the design of “Phase Zero” was created as the first step towards the organization’s goal.

Analysis Of High Rise Structures, Elitsa P. Vutova

Architectural Engineering

The design of a high rise tower involves many moving parts and is best done in collaboration with all construction disciplines. This report examines the basic steps and principles followed and discovered along the collaborative design process between Architectural and Architectural Engineering students of two high rise building systems. The report will look at physical model tests and digital model analyses. It will also follow the design of two high rise towers proposed for San Francisco, CA: The Crystal and the HOODOO. The tower design includes a study of possible lateral loading systems, a dual core and outrigger system analysis …

Piazza Di Ulivo: Arce Patio Redesign, Sophia Kim-Oanh Ha, David Colman

Architectural Engineering

Piazza de Ulivo was Phase 1 of a multi-quarter initiative to redesign and bring life to a patio space adjacent to Engineering West (Building 21) in Spring of 2020. Located within the central courtyard of Engineering West (Hasslein Garden), the patio space previously contained a senior project pergola that collapsed and has been removed. The remaining elements from this previous structure were an inverted moment frame consisting of five concrete columns and beams joining them. Additionally, a wooden bench with concrete pedestals remained under the shade of the existing olive tree. Desire within the Architectural Engineering (ARCE) department for the …

Eco-Industrial Park, Jodie Buchholz

Architectural Engineering

Journeyman International (JI) is a non-profit organization that pairs emerging professionals in the architectural, structural engineering, and construction management industries with humanitarian projects in underdeveloped countries overseeing the design and construction process. The Eco-Industrial Park is a JI project that is partnering with Empowering Villages which is a Rwandan organization that aims to bring energy access, environmental sustainability and economic development to every village. The Eco-Industrial park will be constructed on a plot of land that is a few miles away from a hydropower plant established by Empowering Villages. The project team consists of a 5^th year Cal Poly …

Concussion Detection Device, Jenna C. Sussex, Mark B. Edin, Bianca X. Aleman

Biomedical Engineering

No abstract provided.

D.I.Y. Clean Hood, Samuel G. Porter, Ryan E. Shimogaki, Ryan S. Staples

Biomedical Engineering

The DIY Clean Hood is a low-cost, sterile, and accessible scientific workspace intended for installation in the BioElectroFluidics Lab of California Polytechnic State University’s (San Luis Obispo) Biomedical Engineering Department (BMED), under the sponsorship of Dr. Benjamin Hawkins, PhD. As normal Clean Hood, Biosafety Cabinets, and the like are generally too expensive for a university, a competitive solution to an expensive problem can assist research students and professors alike continue their own work with an inexpensive yet effective environment.

Specific design elements that the customer requirements entailed for the project include a low-particle-count air filtration system, positive pressure air flow …

Addressing Reentry Experiences In California During Covid-19, Emily R. Cook

Social Sciences

I will first provide a literature review surrounding the topic of reentry and recidivism. Next, I will describe the projects that I completed related to reentry and reintegration in California including: participating in various parts of an educational reentry simulation, analyzing student responses to participation in this simulation, organizing a care package drive to assist those recently released, and creating a resource website compiling updates on the COVID- 19 crisis inside of the California incarceration system. I conclude by reflecting on my senior project experience.

A Screenplay For Bystander Intervention For Sexual Harassment Scenarios For College Students, Shanti Herzog

Journalism

This project was developed to describe the drafting of a screenplay for an interactive, virtual reality sexual harassment training module for students of the California Polytechnic University, San Luis Obispo. The research began with the examination of the prevalent and persisting issue of sexual harassment within college campus communities, and how to present college students with the tools to intervene as bystanders, thus encouraging them to intervene when encountering sexual harassment scenarios. The resulting screenplay was written to provide college students at Cal Poly with strategies to identify and take action when encountering sexual harassment, especially in small group gatherings …

Cal Poly’S Journalism Department: An Analysis Of Diversity And Inclusion, Sydney Gwenn Brandt

Journalism

In this project, I analyze what diversity and inclusion looks like in Cal Poly’s journalism department and how it compares to other universities and other programs. I spoke with several students about their experience in the department and their views on the efforts made to improve diversity. I also break down the demographics and share insight into goals the department has for improvements in staff and curriculum.

Non-Slip Prosthetic Surf Foot, Luis Mata, Sabrina Nelson, Gerrit Sperling, Ryan Monjazeb

General Engineering

The Surf Foot project was created to resolve the challenges faced by Dana Cummings, a former Marine and transtibial left leg amputee, while surfing. Dana is a competitive surfer who first picked up the sport after he lost his leg. He currently utilizes a carbon fiber prosthetic leg when surfing. However, this prosthetic is not ideal for Dana as he often slips while standing up on his surfboard. As such, Dana would like a new non-slip prosthetic leg so that he can further pursue his passion of competitive surfing. Our team, which consisted of four engineering students attending Cal Poly, …

Sandy Feet, Garrett E. Herbst, Jacqueline Chuang, Jerin T. Brust, Parker S. Duncan

General Engineering

Sgt. Brady is a former armed forces member with a transtibial amputation. He walks on sand frequently for work and leisure, but experiences severe pain and inconvenience because his current prosthesis is not meant for use on sand. Sand Foot V2 is a prosthesis that allows Sgt. Brady to walk on sand for long periods of time without issue.

Mountain Arm, Conner Magnuson, Amanda Lingle, Jordan Ambrose, Marco Lopez

General Engineering

QL+ Challenger, US Navy Veteran, and transhumeral amputee Cassie Perando needed a way to backpack comfortably and independently while wearing a transhumeral prosthesis, as this is something that she enjoys doing often. The current prosthesis she wears causes pinching while wearing a backpack. To eliminate this issue, we decided to design and create a dynamic, pin-lock socket. This design decision allowed for a comfortable fit for Cassie that will not interfere with the backpack straps. As a secondary suspension system, we designed a sports bra with straps that attach to her opposing side and connect to the front and the …

Effects Of Ring Rolling On Grain Size In Inconel 718 And Waspaloy, David Webster

Materials Engineering

Carlton Forge Works, an industry leader in the manufacture of rolled rings, has observed anomalous grain structures in parts made from Inconel 718 and Waspaloy. These take the form of unusually large grains at the surface of the rings, causing them to fail industry grain size standards. Grain size testing is a critical part of evaluating parts before they are used as grain size and structure control many mechanical properties including creep resistance, low and high cycle fatigue life, and yield strength. These unusually large grains are only present within the first tenth of an inch of the surface of …

Microstructure And Tensile Properties Of Close-Die Forged Ti-6al-4v Aircraft Engine Mount, Renee Roeder, Nick Chen, Michael Viksne

Materials Engineering

The microstructural characteristics of a Ti-6Al-4V close-die forging that passes yield strength specifications are examined and found to be consistent with literature recommendations. Originally, the intent was to compare the microstructure of a forging that passed specification to the microstructure of a forging that did not pass specifications using the imaging software ImageJ. Due to time and safety constraints considering the COVID-19 pandemic, the data that is presented is incomplete data on only the forging that passes specifications. There are no comparisons between the forging that did not pass and the forging that passed.