Digital Commons Network^™

Portable Food Pasteurization Using Pulsed Electric Fields (Pef), Thomas E. Mcmillan Iii

Electrical Engineering

Foodborne illnesses remain a significant public health concern, motivating continued development of alternative food pasteurization technologies. Pulsed electric field (PEF) treatment is a non-thermal pasteurization method that inactivates microorganisms through electroporation while minimizing thermal degradation of food products. The long-term objective of this project was development of a portable PEF food pasteurization system.

An iterative design approach was used to investigate generation of the high-voltage pulses required for PEF treatment. Multiple pulse forming network topologies were evaluated through simulation, leading to selection of a solid-state Marx generator architecture. A low-voltage five-stage prototype was designed, constructed, and tested to validate the …

Pv Performance Evaluation Study At Cal Poly Solar Farm, Eva Paola D. Calderon

Electrical Engineering

This photovoltaic (PV) system performance evaluation study aims to assess the performance of Cal Poly’s Gold Tree Solar Farm, which produces 4.5MW of solar energy. The evaluation concerns itself with the reliability of the PV system that can be affected by weather conditions, component malfunctions, and degradation of the PV modules. Under the International Energy Agency Photovoltaic Power Systems (IEA-PVPS) Task 13 objectives of reliability and maintenance, this study is necessary to contribute towards improvements in analysis and mitigation strategies for long term usage. Existing operational monitoring data from 2018 to 2025 is the focus timespan, providing real world data …

A Broadband, Dual Polarized Antenna For The Radio Neutrino Observatory In Greenland, Laken Baker

Electrical Engineering

Neutrinos contain information necessary to determine the origins of the universe and cosmic events because they can travel long distances with minimal interaction, preserving information about their cosmic origins. Since neutrinos interact with ice sheets resulting in RF radiation, antennas have been developed to detect RF transmissions.

A compact 'vane structure' (see Fig. 1a) dual-polarized broadband antenna model has been developed, constructed, and characterized according to input reflection coefficient, and co and cross-pol E and H plane radiation patterns using HFSS and Cal Poly San Luis Obispo’s anechoic chamber for the Radio Neutrino Observatory in Greenland (RNO-G) [1]. Its design …

Wireless Communication In Autonomous Vehicles, Kaylie Bao, Nicholas Andrews, Mark Negus

Electrical Engineering

This project focuses on developing and testing a vehicle-to-everything (V2X) communication system using Dedicated Short Range Communications (DSRC) based on the IEEE 802.11p standard. The system uses the NXP i.MX 8XLite V2X Evaluation Kit, which includes the SAF5400 modem for wireless communication in the 5.9 GHz band.

The main goal of this project was to establish reliable communication between two V2X evaluation boards and to verify that custom, user-defined data could be transmitted between them. Through iterative testing, we were able to successfully send and receive custom 802.11 frames using the provided command-line tools and achieve consistent communication between nodes. …

Vlsi Spike Encoder For Spiking Neural Networks With 4-Bit Sar Adc, Jack Marshall, Wyatt Tack, Cameron Young, Ryken Thompson

Electrical Engineering

A spike encoder forms the interface between sampled data, such as image data or a sensor signal, and a spiking neural network by converting numerical input samples into discrete spike events. Unlike conventional artificial neural networks, spiking neural networks use spare, even-driven computation instead of continuous-valued activations. This makes them attractive for low-power embedded systems, biomedical electronics, and other edge applications where energy consumption, physical area, and thermal limits are important design constraints.

This project develops a modular spike encoder architecture for spiking neural networks with selectable support for temporal, rate, multi-spike, and delta encoding. Prior work has shown that …

Lora Radio Propagation & Antenna Design For Freight Trains, Cesar Chavez, Marlon Jennson Hernandez

Electrical Engineering

Freight-train environments present significant challenges for wireless communication due to large metallic structures, varying cargo types, and changing antenna orientations that can degrade radio-frequency propagation. This project evaluated the performance of LoRa-based communication links intended for End-of-Train (EOT) and Head-of-Train (HOT) systems operating at 915 MHz. Field testing was conducted to characterize antenna performance using metrics including received signal strength indicator (RSSI), signal-to-noise ratio (SNR), and communication range. Experimental results showed that antenna polarization and directivity significantly affect communication performance in freight-train environments. Directional antennas provided improved signal strength when properly aligned but experienced performance degradation as antenna orientation changed. …

Cal Poly Mars Rover Battery Management System, Lawrence Nichols, Caleb Michael King, Thomas Anh Khoa To, Angel Soto

Electrical Engineering

The exploration of space has consistently been one of the most expensive endeavors humanities has undertaken in its journey to expand ever further. The PolyRover project aims to not only cheapen that expense through student-based research but also provide a better bang for buck as more unmanned ground vehicles (UGVs) can be utilized on planets in concert. In order to do so, the rovers need a robust, yet compact battery management system that can fit within the wheel well. Our system will consist of six commercially-available 18650 batteries in series, organized in a hexagonal fashion around the motor. The BMS …

Articulator Volume 32, Issue 2

Metro Denver Dental Society Articulator Magazine

The 2nd Quarter 2026 issue of The Articulator explores the growing intersection between oral health and whole-body wellness, with a focus on oral-systemic health, interdisciplinary collaboration and the role of dentistry in preventive medicine. Articles include:

• A perspective from Dr. Brett Kessler examining what true medical-dental integration would require, including reimbursement reform, collaborative care models and expanded recognition of dentistry’s role in systemic health.
• An evidence-based article from Ms. Anne O. Rice exploring the connection between periodontal disease, inflammation and Alzheimer’s disease, including the role of dentistry in dementia risk reduction and preventive healthcare.
• Insights from Ms. Lani McBeth on …

Screen The Screener™, Susan Cotten Bsdh, Rdh, Omt

Metro Denver Dental Society Articulator Magazine

This article emphasizes the importance of oral cancer screening for the healthcare providers responsible for screening patients. Through an oral-systemic and airway-focused lens, Susan Cotton, BSDH, RDH, OMT, encourages clinicians to recognize signs of burnout, chronic stress and underlying health concerns within themselves and their teams. The article reinforces the idea that healthier providers are better equipped to deliver comprehensive, patient-centered care.

Stafford Act's Requirement To Consider Climate Change In State Hazard Mitigation Plans, Olivia N. Guarna

Sabin Center for Climate Change Law

Climate change is fueling an unprecedented number of extreme weather and climate disasters with dire costs on human life and property. States and local governments now face a responsibility to adapt to these increasing disaster risks to improve community resilience and avoid an ever-growing magnitude of loss. Congress passed the Stafford Act in 1988 to provide a means for sustained and coordinated federal aid in response to disasters. The Stafford Act includes a comprehensive non-emergency hazard mitigation program. Hazard mitigation assistance empowers states, tribes, and local governments to engage in planning and mitigation activities that improve disaster outcomes and minimize …

Characterizing Aging-Induced Rowhammer Vulnerability And Designing A Runtime-Adaptive Defense For Ddr4 Dram, Abdulaziz Alajmi

Electrical and Computer Engineering Master's Theses

Rowhammer is a hardware fault that began as a DRAM reliability concern and became a security vulnerability. Repeatedly activating one row corrupts data in its neighbors, so an attacker who can hammer rows next to sensitive memory can flip bits they could never directly access. The number of activations needed to do so is called the Rowhammer threshold. The Rowhammer threshold has fallen steadily with each generation. The defenses that ship in response, from in-DRAM target-row refresh to the counter-based mitigations now mandated by the DDR5 standard, all rest on a quiet assumption: that this threshold is a fixed property …

Lora Networking Hardware Reference Designs For Terrestrial And Low-Earth-Orbit Communications, Kevin Nottberg

Master's Theses

The work presented here demonstrates a highly robust and tested LoRa networking hardware reference design to meet the needs of the embedded networking company OWL Integrations. The hardware presented integrated a unique combination of features and design choices. The detailing of its unique design is potentially of use to others for use in fielded battery powered terrestrial sensor networking hardware utilizing LoRa. Also, the terrestrial hardware presented is shown to have the capability to support command and control (C2) LoRa links in low-earth orbit beyond terrestrial systems. The design presented has a more U.S. centric component bill-of-materials (BOM), with the …

Oer Organic Chemistry I Lab Manual, Ji Kim

Open Educational Resources

This Organic Chemistry I Lab Manual presents ten inquiry-based modules that integrate green chemistry principles into every stage of the microscale laboratory experience. Students use Kontes microscale glassware to perform essential techniques, including distillation, recrystallization, extraction, chromatography, and nucleophilic substitution reactions. Each module features standardized learning objectives, pre-lab questions, microscale procedures, data tables, and post-lab analysis. Green Chemistry Connections explicitly links each experiment to the Twelve Principles, emphasizing waste prevention, safer solvents, renewable feedstocks, and accident reduction. From isolating caffeine from tea and lycopene from tomato paste to synthesizing cyclohexene via E1 elimination, students learn classical organic chemistry through an …

A Workflow For Automating Geospatial And Data Visualizations For Post-Earthquake Building Damage Data, Alejandra Bravo

Architectural Engineering: Graduate Reports

After major seismic events, reconnaissance efforts of various types are made to gather data. Coarse data can be collected with satellite imagery, mid-scale data can be recorded by capturing thousands of images, and granular data is typically documented manually by humans. Post-earthquake reconnaissance teams can be deployed by universities, research organizations, professional associations, and private firms. Academics, engineers, and students with varying degrees of expertise are tasked with collecting building metadata and damage data, typically in a short period of time. This data can be of various types including numerical (i.e. number of stories, height, etc.), categorical (i.e. damage level, …

Beach Pollution Messaging: Effects Of Negativity/Loss And Fear Appeals On Perceived Threat And Beach Protection Intentions, Cypress Brice

Communication Studies

Beach and ocean pollution are major environmental issues for all communities, but they have an especially deep impact on coastal communities, where beaches are part of everyday life. Marine pollution includes both chemical pollution and trash, and a lot of it starts from land-based human activity before it reaches the ocean. This study examines how different messaging styles about beach pollution affect how people respond to the issue and whether they feel motivated to help protect beaches and oceans. Using an online experiment, participants viewed one of two beach pollution posters and then answered questions about their reaction to the …

Doomscrolling, Algorithms, And Ai Literacy: A Potent Combination Of Influence On Generation Z, Jacob Le

Communication Studies

This study examines the doomscrolling habits Generation Z’s and its effects on individuals’ awareness of algorithms and artificial intelligence (AI) presence on social media feeds. The experiment was conducted via a survey embedded experiment, through which participants self-reported their social media habits, awareness of how their social media algorithms shape their thinking, and ability to discern and productively interact with AI content on their feeds. The survey embedded experiment was created and distributed via Qualtrics, and data was analyzed via IBM SPSS 25. Results indicated that doomscrolling and spending excessive amounts of time on social media daily does not necessarily …

An Analysis Of Immigration Frames In The News Media Post- Second Trump Administration, Olivia Hartley

Communication Studies

Immigration has been a particularly controversial issue since the 2nd Trump Administration. There has been an increase in Immigration Customs Enforcement activity, including deportations and detainments of immigrants across the United States (Craft & Witherspoon, 2026). Given the uptick in media coverage regarding these events, it is essential to understand how this information is being presented to the public. The framing of news media impacts how the public perceives issues, determining the acceptable treatment of immigrants in our society. In this study, a content analysis was performed to determine the prevalence of generic immigration news frames following the start of …

Addressing Housing Crisis In Reedley, California: A Conceptual Housing Development Proposal, Fabian Urena-Marquez

City and Regional Planning

No abstract provided.

Examining How Student Involvement And Identity Shapes Perceptions Of Cal Poly Administrative Communication And Organizational Change, Ellenor Rose Nunes

Communication Studies

This study examined the relationship between student organization involvement, sense of belonging, and perceptions of administration at California Polytechnic State University (Cal Poly). Using survey data collected from 176 students, independent samples t-tests and correlation analyses were conducted in SPSS Version 25 to examine whether involvement in student organizations was associated with perceptions of administration and institutional belonging. Results indicated no significant relationship between levels of involvement and perceptions of administration or organizational change communication. However, students involved in student organizations reported significantly greater feelings of mattering and belonging compared to non-involved students. Additionally, students with stronger feelings of belonging …

Trial And Triumph!, Amillia Rohme

Celebrating Writers and Writing in our Communities

No abstract provided.

Unbreakable Bond, Charlotte Watson

Celebrating Writers and Writing in our Communities

No abstract provided.

Put Yourself In Someone Else's Boots, Layla Vadhan

Celebrating Writers and Writing in our Communities

No abstract provided.

The Underground Hole Of Mythical Creatures, Alice Gibbons

Celebrating Writers and Writing in our Communities

No abstract provided.

The 32nd Of December, Minhee (Minnie) Cho

Celebrating Writers and Writing in our Communities

No abstract provided.

Shadow Dad 'N Mila Adventures, Sara Clermont

Celebrating Writers and Writing in our Communities

No abstract provided.

City Farm Slo: A Case Study Of Nonprofit Regenerative Agriculture, Carver Tunnell

Master's Theses

The focus of this thesis is to create a case study on City Farm SLO, a nonprofit based in San Luis Obispo, California, that has engaged in education and regenerative agriculture on City owned land since 2013. This case study is intended for use in undergraduate agribusiness and natural resource management courses, to encourage thoughtful discussion surrounding nonprofit and regenerative agricultural systems. The case presents the nonprofit at a time of relative success, having recently secured a lease renewal, extending stewardship 40 years into the future. However, the reliance on grants and donations threatens the security of the operation going …

Vol7iss3 Cover, Hca Healthcare

HCA Healthcare Journal of Medicine Covers

Cover for Volume 7 Issue 3 of the HCA Healthcare Journal of Medicine.

Usa V. Richardson Dangleben, Jr.

2026 Decisions

USDC for the District Court of the Virgin Islands

Rolling Garden Box, Lucas Meneghetti, Gabe Haarberg, Alex Seybold, Matthew Podgorski

Baker/Koob Endowments Awarded Projects

The Rolling Garden Box project was successfully completed and delivered to Heather McColley, project sponsor and Special Day Class instructor at Oceano Elementary School, on June 3, 2026. The project met all original design objectives and was well received by both staff and students. The final product provides an accessible gardening experience for all students. The garden box features a wheelchair-accessible design, a mobile platform with locking caster wheels, and a switch-activated watering system that responds reliably to student inputs. The system allows students to independently control the watering process, reinforcing cause-and-effect learning in a hands-on environment outside the traditional …

How Lesson Type Shapes First-Grade Scienceengagement And Enjoyment, Stella Cybulski, Brooke Towner, Joy James

Journal of Youth Development

Although traditional classroom instruction often emphasizes passive forms of learning, growing evidence highlights the value of active play in promoting curiosity and conceptual development. Grounded in guided play theory, this study investigated how young learners experience science lessons across three instructional contexts: indoor inactive, indoor active, and outdoor active. Thirty-two first-grade students in a Title I laboratory school completed an enjoyment survey and drawing task following each lesson type. Results demonstrated that active play, particularly in outdoor contexts, was associated with higher enjoyment and more dynamic depictions of science learning. Thematic analysis of drawings indicated that students connected more deeply …