Digital Commons Network^™

Dc To Ac Inverter For A Microgrid-Inspired Power Distribution Architecture For Electric Vehicles, Bryan A. Carrillo Martinez, Eli Blacklock, Paul A. Samson, William S. Holt-Hillis

Electrical Engineering

This project builds upon the prototyping of a microgrid-inspired power distribution architecture for electric vehicles (EVs). The efficacy of this prototype aims to inform a full-scale power distribution system that charges an EV battery, supports the electric grid with important ancillary services, performs peer-to-peer EV charging, and works in conjunction with other AC and DC sources and loads. The scope of this report focuses specifically on the design, construction, and testing of the DC/AC inverter. Future development of this distribution architecture will incorporate synchronous generators, a battery management system, and an Arduino/Raspberry Pi-based communication system to fully simulate an electric …

Design Of An Angle Measurement Device Using Ultrasonic Pairs, Shadi Khanpour Doustkar

Electrical Engineering

In this paper, a new concept for ultrasonic indoor positioning built upon instantaneous frequency of ultrasonic signals is presented. Ultrasonic sensors are inexpensive and manageable sensors; they are currently not used to good advantage with their potential for the electronics industry. The current ultrasonic sensors in the market only present a distance value to the nearest object for the user and due to this kind of feedback, it’s not attainable to find the relative position of the object from the sensor in a detection area; examples vary from workpieces and robots to even people. By using an algorithm and multiple …

An Analysis On Wildfire Mitigations Employed By Utilities In California, Evan Luu

Master's Theses

As climate change continues to worsen, environmental effects are felt by many people around the world. In California, some of its most damaging wildfires have been found to be started by utilities. As the state continues to suffer from worsening wildfire conditions, the utilities need to implement a variety of wildfire mitigations to help reduce the risk of wildfires that can affect the state and its residents. This paper analyzes the effectiveness of four mitigations employed across three California utilities and suggests potential ways for the mitigations to be used together. The technologies evaluated are covered conductor, rapid earth fault …

Development Of Load Measurement Technique For Arbitrary Shapes, Quintin J. Cockrell

Master's Theses

Obtaining aerodynamic forces and moments about all three orthogonal axes for arbitrary shapes at arbitrary orientations in a fast manner via a measurement technique specific to Cal Poly’s low-speed wind tunnel to continually obtain the forces and moments under quasi-steady conditions is explored. A Continuous Rotation Technique (CR) uses a 6-DOF load cell and stepper motor to rotate an object about an axis for a complete rotation. The forces and moments acting upon the object pass through the stepper motor and interface plates and recorded by the load cell as the object is rotated continuously a finite number of rotations. …

An Ecological Assessment Of An Endangered Lichen From Central California: Sulcaria Isidiifera, The Splitting Yarn Lichen, Elijah C. Balderas

Master's Theses

Lichens are an underrepresented group of organisms when it comes to both research and conservation efforts. At the same time, lichens face increasing threats from anthropogenic sources including wildfires, climate change and urbanization. With this thesis, I seek to ascertain and publish ecological data on a critically endangered lichen to inform future conservation designations and efforts to preserve and protect the species in perpetuity.

In Chapter 1, I provide an ecological overview of the known range of Sulcaria isidiifera and assess the status of Sulcaria isidiifera via a population count. Sulcaria isidiifera occurs in maritime chaparral habitat in the Los …

Decentralized Machine Learning On Blockchain: Developing A Federated Learning Based System, Nikhil Sridhar

Master's Theses

Traditional Machine Learning (ML) methods usually rely on a central server to per-
form ML tasks. However, these methods have problems like security risks, data
storage issues, and high computational demands. Federated Learning (FL), on the
other hand, spreads out the ML process. It trains models on local devices and then
combines them centrally. While FL improves computing and customization, it still
faces the same challenges as centralized ML in security and data storage.

This thesis introduces a new approach combining Federated Learning and Decen-
tralized Machine Learning (DML), which operates on an Ethereum Virtual Machine
(EVM) compatible blockchain. The …

Discourse Analysis In Engineering: Investigating Patterns In Brainstorming Conversations, Aimee Chiem

Master's Theses

Brainstorming is a critical part of the engineering design process and can have a significant impact on the outcomes of the overall project. While research has studied the outcomes of brainstorming and the ideas that teams generate, the role that language and conversation play in these activities is still relatively underexplored. Observing the different ways people use specific types of discourse can reveal how conversations can affect brainstorming itself. To that end, this research aims to answer the following questions:

1) What are the different kinds of discursive moves that students make during engineering brainstorming activities?

2) What patterns or …

Launch Vibration Attenuation For In-Space Assembly Cargo, Jered Bell

Master's Theses

This thesis investigates the implementation of a passive isolator with a pressurized air cushion for spacecraft payloads in mission architectures implementing in-space assembly technologies. A pressurized air bed capable of briefly surviving the space environment for cargo delivery was prototyped and experimentally evaluated for launch vehicle vibration dynamics resulting in a 72%, 93%, and 88% reduction in experienced GRMS loads for the X-Axis, Y-Axis, and Z-Axis, respectively. A preliminary Total Mass Loss evaluation of the Low-Density Polyethylene Film utilized for the air bed resulted in a mass loss of 0.7%, indicating that commercial off-the-shelf films might require minimal modification for …

An Imc Plan For The Blue Dolphin Company, A Local Nonprofit, Allison Evelyn Campbell

Journalism

Alan Godley's journey into marine preservation began as a dock boy, a role that brought him face-to-face with the environmental impact of boat cleaning practices. Witnessing the washing of harsh chemicals into the ocean and waterways fueled his environmental consciousness. Years later, he founded the Blue Dolphin Company in 1989, an “organization focused on furthering the awareness of whales and dolphins, and all marine life … [supporting] the rehabilitation and release of marine mammals and other wildlife”. Over the three decades, Mr. Godley has operated this nonprofit and small business, leveraging educational initiatives to inform people of all ages about …

Interactive Water Vortex Exhibit, Simon Way, Emily Laing, Roqaya Naseri, Makenzie Kan

Mechanical Engineering

The San Luis Obispo Children’s Museum requested an interactive water vortex exhibit to both engage and entertain inquisitive guests, ages two to eight. The goal was to design and manufacture an exhibit that would educate its users on the fluid mechanics behind water vortices. They activate the mechanics by spinning a wheel, which is perceived as the catalyst to manipulate the flow of water to successfully create a whirlpool. Our team has created an interactive display that will enlighten young minds, providing the museum with an educational exhibit which shares a concept not currently taught by any other. Our project …

Defining Her Future Conference Application, Michaela Stauber

Graphic Communication

The Women and Business club hosts the Defining Her Future Conference every year in order to empower young women and aid in their professional development. The conference has many opportunities for students to connect with professionals and learn from inspiring women but it does not currently have an application to enrich the experience. An application with all current conference information would minimize waste, provide conference information and logistics, and allow participants to network.

Burnsbucha - Kombucha Beverage Brand Identity, Shelby Burns

Graphic Communication

PROJECT SCOPE

When you compare wineries to Kombucha companies, there is a significant opportunity in the market for more Kombucha brands. This project aims to establish comprehensive design guidelines, determine the most environmentally friendly printing method for packaging, create initial packaging concepts that incorporate labeling for those with visual impairments, and create initial packaging concepts, including the completion of the beverage product itself.

PROJECT OBJECTIVE

The result of this project is to design the brand identity, logo, label, and packaging for a fictional kombucha beverage company.

OPPORTUNITY STATEMENT

I would like to take advantage of creating the brand identity: logo, …

Electronic Note-String Detector, Gavin Garcia-Rossi, Tommy Smail

Electrical Engineering

As the virtual space has become a dominant part of everyone’s day-to-day lives, many normal face-to-face interactions and services have not yet been facilitated by adapting technology. One of these prevailing areas is music lessons. Over Zoom meetings, or other virtual platforms, it is tremendously challenging to teach students. These challenges include recognizing student mistakes audibly and visually, and being able to give confident feedback on the incorrect notes played by learning musicians. Without having to delve into improving the complex systems that would be required to improve audio, video, and connection quality of these connections, we have another solution …

Road Embedded Traffic Actuated Turbine (Retat), Derek Terry Cedillo, Jairo Fernandez Garcia, Alejandro Samaniego, Yosef Towfique

Mechanical Engineering

The Road Embedded Traffic Actuated Turbine (RETAT) project aims to revolutionize sustainable energy solutions by harnessing the power of passing vehicles to generate electricity. This Final Design Review (FDR) encapsulates the evolution of the project, from conceptualization to the tangible realization of the Verification Prototype created by a team of mechanical engineering students. The RETAT boasts an innovative design, incorporating square steel tubing and a unique linear-to-rotational energy conversion mechanism. This report provides a comprehensive overview of the design, implementation, and testing phases, highlighting achievements, challenges, and areas for refinement. As the RETAT project strives to contribute to a cleaner, …

Tagalong Trail, Sean Wahl, Jason Davis, Quinlan Stephens, Ryan Johnson, Vinh Vo

Mechanical Engineering

The Cal Poly mechanical engineering team working on the Path of Lights and Sounds for the Girl Scouts of California’s Central Coast has now completed their project. In the last quarter of their project, they were able to finalize their tile’s structural design while iterating through several electronics board designs. Through this iteration, they were able to create a final electronics board and designed a water-resistant enclosure to house the board. A new team member was added, allowing them to manufacture 28 tile structures and 30 electronics assemblies over the course of two and a half weeks. This proved to …

Integrated Actuator, David Hefter, Mathew Smith, Amanda Westmoreland, Akanksha Maddi

Mechanical Engineering

This Final Design Review document outlines the senior project design that we, a team of four mechanical engineering students at California Polytechnic State University, are developing for Charlie Refvem, a lecturer in the mechanical engineering department. The final design has undergone significant modifications since the Critical Design Review, such as a redesigned vertical shaft, material changes, and the incorporation of belt tensioners. These redesigns are thoroughly discussed in the context of testing and assembly error resolution.

The document outlines the detailed steps for the production and testing of the design verification prototype. This includes the procurement and manufacturing of components, …

Evaluation Of Structural Retrofit Of A Hillside Home, Cameron C. R. Cunningham

Architectural Engineering

On November 24, 2021 after months of initial planning, the project owner received approval from the San Luis Obispo Planning and Building Department for initial work on a residential remodeling submission. This approval including a grading permit and other initial site work to begin renovation of the owner’s hillside residential property.

Disrupting Childhood Trauma With Holistic Health Practices In Low Ses Elementary Schools, Unna G. Burns, Ketzia Kogan, Sarah M. Wingerden, Hannah Meck

Psychology and Child Development

It is evident that adverse childhood experiences (ACE) are a large challenge to tackle in the U.S., with 61% of adults reporting that they’ve experienced one ACE and 16% reporting four or more ACEs by age 18 (Centers for Disease Control and Prevention, 2019). ACE score items include, but are not limited to experiencing verbal, physical, sexual abuse, physical and/or emotional neglect, having a mentally ill family member, witnessing violence in the home towards a parent, and/or having a family member in prison. Such experiences serve as a public health threat that, without early intervention, bring about long-term effects biologically, …

Designing A Modular French Drain Driveway: Addressing The Impact Of Stormwater Runoff From Residential Communities, Tomer Baltinester

Construction Management

Stormwater runoff poses a significant threat to the environment and can have in impact on public health. Contaminants from our homes accumulate in stormwater and flow down our streets into our sewer systems. Ultimately, the hazardous water ends up in various natural waterways, creating a substantial pollution problem which harms the local ecosystem. Of the millions of driveways across the country, almost all are underutilizing the footage of land that they are occupying. By developing an easy-to-incorporate drainage system, a large portion of stormwater that would normally flow into the street can be contained within the property beneath the driveway. …

United States Army Corps Of Engineers Info Session At California Polytechnic State University San Luis Obispo, Gabriel L. Vesneski

Construction Management

Gabriel Vesneski facilitated an Info Session on Thursday, November 2, at California Polytechnic State University, San Luis Obispo for the United States Army Corps of Engineers Sacramento District Civil Works. Three guest speakers from the Sacramento District Civil Works office presented their educational background, experience as employees for the Corps of Engineers, occupational benefits, and finally opened a question-and-answer forum for the students attending the Info Session. Upon completion of the Info Session, a survey was provided for attendees, in order to track interest in employment or internship opportunities provided by the United States Army Corps of Engineers. Finally, there …

Vegetation And Its Effectiveness In Replacing Traditional Cooling Systems, Bryce Isaiah Trump

Construction Management

This project aimed to analyze if vegetation is effective in replacing traditional cooling systems, when utilized as green roofs and walls. It serves to provide information to the construction industry, designers, architects, and homeowners. Information gathered through a field experiment will be used to give quantitative data on if vegetation is effective and practical in replacing traditional cooling systems in buildings and homes. The basis for the idea of this project stems from two main courses in the Construction Management program, those courses being Principles of Environmental Design, and Sustainability and the Built Environment. The stated courses introduce the idea …

San Luis Obispo Railroad Museum Accessibility Ramp, Noah Atticus Callahan

Construction Management

The San Luis Obispo’s Railroad Museum is a local organization that aims to preserve the history of the Southern Pacific Railroad and educate the community. The mission of this organization is to collect and display various historic artifacts for the public to see. This project serves to aid in the development of a 1923 boxcar into a future exhibit for the museum by creating a ramp that bridges the platform of the station to the boxcar. The ramp was constructed out of pressure treated lumber, angle iron to bind the lumber together, and hinges to allow it to fold. Both …

Academic Senate - Minutes, 11/14/2023, Academic Senate

Academic Senate Minutes

No abstract provided.

Smartphone Based Object Detection For Shark Spotting, Darrick W. Oliver

Master's Theses

Given concern over shark attacks in coastal regions, the recent use of unmanned aerial vehicles (UAVs), or drones, has increased to ensure the safety of beachgoers. However, much of city officials' process remains manual, with drone operation and review of footage still playing a significant role. In pursuit of a more automated solution, researchers have turned to the usage of neural networks to perform detection of sharks and other marine life. For on-device solutions, this has historically required assembling individual hardware components to form an embedded system to utilize the machine learning model. This means that the camera, neural processing …

Academic Senate - Minutes, 10/31/2023, Academic Senate

Academic Senate Minutes

No abstract provided.

Review Of Bénédicte Boisseron's Afro-Dog: Blackness And The Animal Question, Thomas Aiello

Between the Species

This review evaluates Bénédicte Boisseron's Afro-Dog: Blackness and the Animal Question. In the process, it tracks the development of the academic relation between Blackness and animality.

As-965-23 Resolution On Ufpp 11.6 Academic Unit Reorganization, Academic Senate Faculty Affairs Committee

Academic Senate Resolutions

Separates academic unit reorganization policies and procedures from policy and procedure related to matters of curriculum such as program suspension; and further resolves that these policies and procedures may be implemented as soon as the President approves them and they are placed on the Academic Programs and Planning Academic Policies webpage; and further resolves that the attached academic unit reorganization policies and procedures be published in UFPP for academic year 2024-25.

Academic Senate - Agenda, 10/31/2023, Academic Senate

Academic Senate Agendas

No abstract provided.

Copyright And Table Of Contents

The Forum: Journal of History

No abstract provided.

Journal Staff

The Forum: Journal of History

No abstract provided.