Digital Commons Network^™

Factors Affecting California Grassland Biodiversity: Two Case Studies, Nora Bales

Master's Theses

Biodiversity loss over the last century has been significant and is projected to increase. Biodiversity loss is accelerating due to climate change and habitat loss and degradation. Biodiversity supports key ecosystem services including pollination services, climate regulation, and water filtration. Biodiversity conservation is a top priority for land managers and researchers, however many ecological studies with practical applications lack a thorough understanding of the soil environment in their study system. We conducted two case studies integrating soil and plant data to answer management questions. The first case study investigated the relationship between a threatened plant, Hooveria purpurea var. purpurea and …

Review Of Leon-Boys, Diana. Elena, Princesa Of The Periphery: Disney’S Flexible Latina Girl. Rutgers University Press. 2023. 182 Pp. $26.95 Paperback. Isbn# 978-1978830172, Bryce Henson

Feminist Pedagogy

No abstract provided.

The Feminist Keyword Project: Literature Reviews As Feminist Praxis, Krystal Cleary

Feminist Pedagogy

The Feminist Keyword Project is a scaffolded series of assignments that culminates in a literature review of the student’s chosen keyword. It is designed for intermediate undergraduate students who acquired a foundational feminist vocabulary in their introductory classes. Building upon this baseline fluency, the project shifts students’ understanding of course concepts from a glossary of terms to politicized feminist gatherings. The project is informed by the tradition of the keyword entry genre to move students beyond merely defining their chosen term to narrating it as a site of feminist discourse in and outside of academia. In doing so, the Feminist …

Mate Choice And Sexual Conflict In A Livebearing Fish, Julia C. Kasper

Master's Theses

Eavesdropping occurs when a receiver extracts information from an interaction without directly engaging with the signaler. Eavesdropping has been shown to be an effective way of evaluating the quality of potential mates and their abilities in male-male competition, without having to directly interact with them, thereby reducing energy costs and mating harassment. Girardinus metallicus is a livebearing poeciliid fish endemic to Cuba whose mating system is dominated by mating harassment in the form of sneak copulations, persistent displaying, and male-male aggression. G. metallicus has a male specific polymorphism in both melanin coloration and behavior. Males with melanin coloration are known …

Mountain Lion Resource Selection In The California Central Coast: Modeling Habitat Suitability For A Large Carnivore In A Rapidly Changing Environment, Megan Elizabeth O'Connor

Master's Theses

Land use conversion toward agriculture such as orchards and vineyards can have severe negative impacts on habitat and wildlife, particularly large carnivores, globally through habitat fragmentation and loss. The mountain lion (Puma concolor) population in the California Central Coast is thought to provide “stepping-stone” connectivity between several severely genetically compromised coastal populations throughout the Santa Cruz Mountains and several mountain ranges in Southern California; however, the California Central Coast is one of the fastest-developing regions of California with little protection against future land use conversion. Conserving areas of and corridors between high-quality mountain lion habitat through conservation easements …

Avoiding Anthropomoralism, Julian Friedland

Between the Species

The Montreal Declaration on Animal Exploitation, which has been endorsed by hundreds of influential academic ethicists, calls for establishing a vegan economy by banning what it refers to as all unnecessary animal suffering, including fishing. It does so by appeal to the moral principle of equal consideration of comparable interests. I argue that this principle is misapplied by discounting morally relevant cognitive capacities of self-conscious and volitional personhood as distinguished from merely sentient non-personhood. I describe it as a kind of anthropomorphizing moralism which I call anthropomoralism, defined as the tendency to project morally relevant characteristics of personhood onto merely …

Review Of Dan C. Shahar’S Why It's Ok To Eat Meat And Per Bauhn’S Animal Suffering, Human Rights, And The Virtue Of Justice, Josh Milburn

Between the Species

It’s tricky to find decent defences of meat-eating of the kind practiced by most westerners. I was thus intrigued to pick up two short books defending meat-eating. Dan Shahar’s Why It’s Ok to Eat Meat (2022) is in Routledge’s series of short books called Why It's OK: The Ethics and Aesthetics of How We Live. Per Bauhn’s Animal Suffering, Human Rights, and the Virtue of Justice (2023) is from Palgrave Pivot, which publishes books falling somewhere between journal articles and monographs. Shahar’s book is worth reading: it’s well-written, raising interesting questions, and offering a coherent defence of meat. Bauhn’s book …

“I Can’T Learn When I’M Hungry”: Responding To U.S. College Student Basic Needs Insecurity In Pedagogy And Praxis, Jasmine R. Linabary, Rebecca Rodriguez Carey

Feminist Pedagogy

Food insecurity and other basic needs insecurities were pressing concerns for U.S. college students prior to the COVID-19 crisis and are even more so now. These issues disproportionately impact minoritized students, making addressing basic needs an issue of educational equity. As feminist teacher-scholars, we reflect in this essay on what it means to teach in the context of student basic needs insecurities, drawing on our experiences from launching an interdisciplinary initiative dedicated to combatting food insecurity on our campus. In doing so, we seek to catalyze changes within and beyond the classroom to better support students.

A Review Of Undrowned: Black Feminist Lessons From Marine Mammals, Nadia G. Dresscher-Lambertus

Feminist Pedagogy

No abstract provided.

Intertidal No. 1, Adriana Dutra, Anna Madruga, Ashley Lang, Asmahan Karam, Brigitte Kim, Chloe Kelly, Claire Chan, Dana Craighead, Elizabeth Brown, Elsie Wordal, Gavin Hart, Gazelle Chen, Alexandra Hardcastle, Ian Pines, Isaac Rudnick, Jack Fowler, Jade Stankowski, Janae Pabon, Jenna Dierkes, Joshua B. Venz, Josie Doan, Maddie Stein, Madison Gonzalez, Malia Weingarten, Noah Ackerman, Noelle Amey, Maxwell H. Johnson, Rebekah Lee, Rebekah Shane, Sam Mosteller, Sarah Chayet, Sarina Vachhani, Shelby Anderson, Sophie Stoll, Sydney Lehr, Taylor Lozano

Intertidal

For the first year ever, Intertidal has surfaced to showcase the art of Cal Poly's students and faculty. An 'intertidal zone' is an area where the ocean meets the land--hidden during the high tide and exposed during the low. Our journal embodies the moment where the tide recedes, revealing stories previously hidden.

Ocean Sight One: Mixed Reality Experience, Lucas Michael Reyna

Computer Engineering

Ocean Sight One is an interdisciplinary project group consisting of Cal Poly staff and students from several different departments. It exists to educate the public on the marine ecosystems near the Santa Barbara coastline that is the home of twenty-three abandoned oil rigs. Despite one’s initial reaction to these massive abandoned structures, they actually provide an incredibly diverse dwelling for numerous forms of sea life. The site is a shining beacon for marine ecology researchers trying to formulate how to preserve wildlife in an era of worsening global environmental disruptions. The future of these oil rigs are not certain, as …

A Study Of The Accuracy Of Stock Feeding And Implementation Of Future Improvements: Project Reflection, Drew R. Tilton

Agricultural Education: Graduate Internship Reports

This report details the role of an assistant coach with responsibilities connected to animal welfare, stock management and feed program.

Aged 539 Project- Soledad High School, Jacob Torres

Agricultural Education: Graduate Internship Reports

This internship and project report includes documentation 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 Soledad High School conducted by representatives of the California Department of Education. The supporting material includes information to receive state and local funding, outline the goals and objectives of the program, along with an overview of Soledad High School, the agriculture program and the community.

Storytelling And Racial Identity: How First-Generation Students Of Color Navigate Their Identities At Predominately White Institutions, Kimberly Garcia Cruz

Communication Studies

Utilizing the Narrative Paradigm (Fisher, 1984) and thematic analysis (Braun & Clarke, 2006) the present study seeks to explore and further understand the ways in which first-generation students of color navigate, and thus make meaning, of their race and class identities at a Predominantly White Institution (PWI). Through qualitative interviews with 14 first-generation students of color (henceforth, FGSOC), themes that emerged included: (1) being used to “it”, (2) financial differences cause a clash with belonging, and (3) cultural spaces bring welcoming feelings. Findings were consistent with previous research regarding barriers faced by first-generation students of color. The current study adds …

Animatronic Monarch Butterfly: Mechanical System, Janine Rae Moreno, Enrico Cruz, Alexia Murphy, Lakshmanan Muthukaruppan

Mechanical Engineering

This report describes the design, manufacturing, and design verification of an interactive animatronic monarch butterfly created by a team of mechanical and computer engineering students for the Girl Scouts of California's Central Coast. The purpose of the project is to engage Girl Scouts in learning about monarch butterflies and provide hands-on experience in robotics and STEM. The report covers design changes, manufacturing processes, and assembly of various components, including the butterfly body, wings, legs, and electronic housing. The software and electronics used in the project are also briefly discussed, as the computer engineering team was responsible for the software and …

Itentifying Suitable Sites For The Rotating Safe Parking Program In San Luis Obispo, Finnegan James

City and Regional Planning

This report has been created with the intention of identifying a new Safe Parking location in the City of San Luis Obispo (SLO) for the Rotating Safe Parking Program. SLO currently has two Safe Parking locations, though one is being discontinued due to inadequacy of the site. The City wishes to identify a new location, or locations, that can replace this. This report came to life after coordination with the City to determine how this senior project could best support the City’s efforts to address homelessness in SLO in 2023. My work began when I identified areas in the Homelessness …

Evaluation Of Potential Surrogates For Listeria Monocytogenes In Fresh Citrus-Specific Validation Studies, Kimiko Grace Casuga

Master's Theses

The FSMA Produce Safety Rule (PSR) requires citrus packers to more closely assess, manage, and monitor food safety risks. Although there have been no foodborne illness outbreaks and only one recall in fresh citrus, the risk of pathogens coming in on the fruit and cross contamination during washing still exists. Packhouses have dynamic washing systems and in-plant validations may be the only way to demonstrate compliance with the PSR. In-plant validations use surrogates in place of pathogens, and none have been identified or validated for citrus. The aim of this research was to identify a surrogate for use in fresh …

Reducing Scope 3 Emissions By Investing In Regenerative Agriculture In Supply Chains, Stephanie Cain

Master's Theses

The agricultural industry has an opportunity to shift to a more sustainable practice that helps restore vital topsoil, improve water quality, reduce environmental impact, and sequester atmospheric carbon into the vast soil carbon pool. However, to implement these practices at considerable scale, agricultural producers require access to resources and capital they rarely have and can be difficult to acquire. As a company, investing in regenerative agriculture in supply chains can lead to reduced Scope 3 emissions, more resilient supply chains, and better marketability as an investment fund, an employer, and a brand. Insetting regenerative agriculture can protect supply chains against …

Food For Thought: The Effects Of Feeding On Neurogenesis In The Ball Python, Python Regius, Hannah F. Bow

Master's Theses

Pythons are a well-studied model of postprandial physiological plasticity. Consuming a meal has been shown by past work to evoke a suite of physiological changes in pythons and elicit one of the largest documented increases in post-feeding metabolic rates relative to resting values. However, little is known about how this plasticity manifests in the brains of ball pythons, Python regius. Previous work using the cell-birth marker 5-bromo-12’-deoxyuridine (BrdU) has shown that cell proliferation in the python brain increases six days following meal consumption. This study aimed to confirm these findings and build on them in the long term by …

Effects Of Mature Recombinant Gdf9 And Bmp15 On In-Vitro Maturation Of Bovine Oocytes And Subsequent Embryo Development And Effects Of Antioxidants On Blastocyst Re-Expansion Rates, Jamie Thompson

Master's Theses

In-vitro produced embryos (IVP) differ greatly from in-vivo derived embryos (IVD) in gene expression, metabolism, development, and cryotolerance which limit the widespread use of this technology. In-vitro maturation (IVM) is one of the most important components for successful in-vitro embryo development. Growth differentiation factor 9 (GDF9) and bone morphogenetic protein 15 (BMP15) have been found to be essential during oocyte maturation and thus female fertility. These proteins are oocyte secreted factors (OSFs) and are produced with pro- and mature protein regions where the pro-regions are thought to aid in protein folding and dimerization where heterodimerization the two proteins has been …

Evanescent: Animating Space, Kyle Servando

City and Regional Planning

A redesign of the open space of The Geffen Contemporary at MOCA into an plein air gallery for the public to be their own artists.

Efficacy Of Pure Bioscience Surface Disinfectant On Varying Bacterial Strains, Isabelle R. Mckenzie

Biological Sciences

Agriculture represents a crucial aspect of the acquisition of food resources in modern society. Consequently, it is a paramount undertaking to process crops devoid of any pathogenic agents. A cleaning product named Pure Hard Surface Disinfectant was presented by Pure Biosciences, acclaiming its capacity to destroy bacteria and fungi, while impeding their proliferation for an extended duration following application. This pilot project sought to quantify the efficacy of Hard Surface Disinfectant. Empirical observations conducted thus far have concentrated on surveying the immediate effects of the principal ingredient, silver ion, on diverse bacterial strains. Future prospects for this project include a …

Polyflowbuilder: An Intuitive Tool For Academic Planning At Cal Poly San Luis Obispo, Duncan Thomas Applegarth

Computer Engineering

PolyFlowBuilder is a web application that lets users create visually intuitive flowcharts to aid in academic planning at Cal Poly. These flowcharts can be customized in a variety of ways to accurately represent complex academic plans, such as double majors, minors, taking courses out- of-order, etc. The original version of PolyFlowBuilder, released Summer 2020, was not written for continued expansion and growth. Therefore, a complete rewrite was determined to be necessary to enable the project to grow in the future. This report details the process to completely rewrite the existing version of PolyFlowBuilder over the course of six months, using …

Variable Frequency Motor Drive Application, Jason G. Milne, Nick Mark

Electrical Engineering

This project entails the development of an electrical engineering undergraduate lab module focusing on utilizing a variable frequency drive (VFD) controlled with a programmable logic controller (PLC) — the Modicon M580. The variable frequency drive is a device that is able to automatically change the frequency of an object through automation without having to physically change the device that is being controlled (ex: fans, pumps, motors, etc.). This project will guide students to understand the software for programming and controlling the PLC within a 3 hour laboratory experiment. Throughout the lab, the students will learn how to implement the PLC …

An Interactive Ecosystem Simulator, Tong Zhou

Computer Science and Software Engineering

This project is about an ecosystem simulator game that allows players to manipulate the population size of the selected species and observe these species interact with each other. It focuses on reflecting the consequences of human intervention in the ecosystem and the difficulty of maintaining a balanced ecosystem. I’ve been astonished by how human intervention could easily crash the ecosystem and how difficult it could be to make up for our faults. And many people still hold the thought that we control the world and could determine the death or live of all other creatures as we like. However, the …

Metamaterial-Based Soft Actuators, Savannah June Cheney, Nathan Kessenich, Marco Leen, Merek Mcgill

Mechanical Engineering

For this project the team was tasked with designing a soft actuator that incorporated aspects of mechanical metamaterials. The team’s goal was to demonstrate the feasibility of structural metamaterials in the field of soft robotics and demonstrate a novel response with a final assembly. Also included in the team's discussion are the manufacturing steps, protype tests & results, and suggested future next steps. Following the previous report (critical design review) the team chose to follow the path of designing a continuum robot with metamaterials incorporated into the design. A continuum robot consists of a soft cylindrical body with rigid evenly …

Zero-Waste Ocean Floor Hydrophone Mooring, Chloe Schofield, German Jack Ellsworth, Jathun Somasundaram, Evan Brown

Mechanical Engineering

Maddie Schroth-Glanz, from the Statistics Department of Cal Poly, requires a system that assists in the deployment and retrieval of a marine hydrophone used to record ocean mammal vocalization patterns, specifically in large whales. This report discusses the final design, including changes to the design after the Critical Design Review, and the tests that were done to ensure the final design achieves the specifications of the project. We will discuss everything from material purchases to manufacturing and assembly for all subsystems of the project, and then discuss how our testing justified the design choices we made. Finally, the report will …

Therapeutic Mechanical Horse Project, Broghan Martin, Carson Roff, Zach Barnisham, Lydia Barnes

Mechanical Engineering

This project team created a simple mechanical model of a horse that disabled children could ride on to feel more comfortable partaking in equine therapy. This project was sponsored by Jack’s Helping Hand as part of their equine therapy program. The team went through the entire design process of researching, ideating, prototyping, and testing to create the final product. Finite element analysis of the structural members of the horse was performed. The forces used in that model were later validated through testing of the strength of those same members after manufacturing. In the end, a self-actuating single degree of freedom …

Disc Golf Throwing Robot, Nevada S. Schultz, Sydney M. Lewis, Erick Edmundo Daza, Rachel Alysse Greenberg, Peter M. Kean

Mechanical Engineering

Disc golf companies need better methods to test disc flight. The scope of this project is to create a disc throwing robot that can throw a disc golf driver 450-500 feet, with control over the speed, spin, and release angle. Research shows that multiple disc-throwing products exist; however, none meet the full requirements of this project. The Cal Poly senior project design team created a proof-of-concept machine. This prototype started as a two-wheel mechanism. Eventually, a third wheel was added, allowing for complete control over disc spin. The three-wheel prototype reached 62 mph when perfectly calibrated. The prototype is accurate, …

Home Based Business Ordinance For The City Of Reno, Maxwell Hp Johnson

City and Regional Planning

Home based businesses allow for some commercial and business activities to occur within private residences by residents without the need of commercially zoned properties or structures. Home based businesses provide affordable accommodation for less impactful small businesses, but can additionally impact neighbors and communities with negative externalities when not properly regulated. The City of Reno, Nevada currently faces rising land prices and limited availability of commercial properties. Such conditions increase the adoption of home based businesses, and combined with the lack of regulation can create nuisances within communities.

The ordinance proposal analyzes relevant legal cases, case study ordinances, and the …