Digital Commons Network^™

Trustguard: Containment Architecture, Michael Hu, Sophie Russ, Stephen Beard

College of Engineering Summer Undergraduate Research Program

All software security relies on proper execution at the hardware level. This research extends work on containment architectures, which ensure that any ill effects of malicious or buggy hardware are contained within the system. This is accomplished by a small, security hardware component, called the Sentry, validating communication before it leaves the system. This research assesses the advantages and disadvantages of using the CHISEL hardware language, from a security and verification standpoint. Further, this research investigates more efficient Merkle trees to optimization caching within the Sentry chip to improve performance and power utilization.

Analysis Of Gait Parameters And Knee Angles In Ultimate Frisbee Players: Implications For Balance And Injury, Ethan Nikcevich

Master's Theses

Biomechanics research investigating gait and balance of ultimate frisbee players is an unexplored topic. Ultimate requires a wide range of motions that could improve balance and is also a sport prone to frequent injury. This study explores the impact of playing ultimate on gait parameters associated with balance and knee angles associated with joint injury. Gait trials were conducted on 8 ultimate players and 8 control participants between the ages of 18 and 23 to obtain total double support time, stance phase time, single support time, load response time, abduction-adduction (AA) angles, internal-external (IE) rotation angles, and flexion angles of …

Cell Membrane Lipid Alterations In Blood Plasma At Pre-Conception And During Pregnancy Are Associated With Gestational Diabetes Development, Jennifer J. Luevano

Master's Theses

Introduction: Gestational diabetes mellitus (GDM) is a metabolic disorder that has been defined as glucose intolerance that is first identified during pregnancy. The etiology of GDM is not yet fully understood, but there are several risk factors that appear to contribute to its development such as advanced age at pregnancy, family history of type 2 diabetes mellitus, and a previous history of GDM. The discovery of predictive GDM biomarkers has the potential to enable early GDM detection and lead to earlier diagnosis and preventative interventions.

Objective: Perform metabolomics analysis on plasma samples collected at pre-conception and at 26-weeks gestation to …

Hardware-In-The-Loop Reaction Wheel Testbed With Camera Vision, Abigail Romero, Harvey Perkins, Stephen Kwok-Choon

College of Engineering Summer Undergraduate Research Program

Reaction wheels are widely used in aerospace systems as a method of attitude control. This research was focused on the design, development, and testing of a hardware-in-the-loop reaction wheel testbed that can be used for research and teaching applications related to satellite navigation and control. This project successfully utilized commercial off-the-shelf components to develop a reaction wheel capable of controlling the orientation of a freely rotating platform, as well as tracking objects using computer vision.

Additive Manufacturing For Medical Education, Michael Noon

College of Engineering Summer Undergraduate Research Program

A growing body of evidence is suggesting that anatomical knowledge, the keystone of many medical specialties, is suffering among new graduates. While a host of reasons are provided, one common thread that many point to is the decline of cadaver dissections in the classroom. Many virtual audio-visual tools are used to address this gap, yet evidence has shown their ineffectiveness. Given this gap, the high degree of flexibility found in additive manufacturing (AM), and the many uses AM has already found in the medical field, we propose its use to fill this gap, allowing for students to learn with touch …

A Study On Api Security Pentesting, Hadi Asemi

Master's Theses

Application Programming Interfaces (APIs) are essential in the digital realm as the bridge enabling seamless communication and collaboration between diverse software applications. Their significance lies in simplifying the integration of different systems, allowing them to work together effortlessly and share data. APIs are used in various applications, for example, healthcare, banks, authentication, etc. Ensuring the security of APIs is critical to ensure data security, privacy, and more. Therefore, the security of APIs is not only urgent but mandatory for pentesting APIs at every stage of development and to catch vulnerabilities early. The primary purpose of this research is to provide …

The Silent Victims: Hiv In The Deaf Community, Hali Kohls

sprinkle: an undergraduate journal of feminist and queer studies

No abstract provided.

La Negra Tiene Tumbao: Multimodal Resistance Strategies Of Afro-Latinxs And Other Queer Constructions, Kassandra Colón Cisneros

sprinkle: an undergraduate journal of feminist and queer studies

The importance of sound in Afro- diasporic communities hearkens back to the slave cry on the plantation field, a sound that showed there is social life within social death. These survival and resistance strategies still exist today, and are not limited to music; they can also be traced through aesthetics, as well as routes and history that connect Afro-Latinxs to the diaspora. The deployment of diasporic resistance through what Juan Flores calls “baggage,” show the possibility and radical potential for survival in white spaces. Recognizing the necessity to dismantle white heteronormative spaces, my research will analyze how Afro-Latinxs—especially those who …

A Pre-Medical Student’S Reconciliation Of Feminist Narratives Regarding Women’S Health: A Consideration Of Perspectives On Childbirth In The U.S., Laura Clayton

sprinkle: an undergraduate journal of feminist and queer studies

Many feminists argue that one major negative aspect of reproductive healthcare in the U.S. is the common over-medicalization of women during childbirth, including potentially unnecessary procedures such as cesarean-section and episiotomy. As a solution, they advocate for increased involvement of midwives in childbirth practices, as midwives allow women to give birth at home with minimal medical intervention. This paper analyzes the benefits of midwifery as well as the current increased risk associated with homebirth in the U.S. Additionally, it questions the damaging stigma associated with assumptions of cesarean-section as a suboptimal outcome. A false dichotomy has developed in our culture …

Identifying The Stream Depletion Paradox By Monitoring A Stream’S Response To Aquifer Pumping From Neighboring Wells, James Klueber

Master of Science in Environmental Sciences and Management Projects

Current groundwater models utilize a constant head (Dirichlet) boundary condition which assumes stream stage is fixed and does not experience any drawdown in the event of pumping from an interconnected aquifer despite the presence of stream depletion. Therefore, constant head boundary implies that streams and lakes in a groundwater model behave as an infinite supply of water when aquifer pumping occurs. This study aimed to determine if a stream located in the California Central Coast experiences drawdown and depletion when pumping occurs within an aquifer-stream system. This was achieved by measuring stream stage, aquifer water levels, stream discharge, and the …

Assessing Environmental Impact Of The Built Environment By Adopting Life Cycle Design: Using Swanton Pacific Ranch As A Case Study, Hope E. Springer

Master of Science in Environmental Sciences and Management Projects

To combat the carbon emissions contributed to the atmosphere by the built environment, it is imperative that low-embodied-carbon materials choices be prioritized throughout the building design process. To achieve this, this professional project creates an Excel-based, open source, and user-friendly tool for the construction sector to make design decisions that prioritize the sustainability of structures, as one such tool does not currently exist. The use of OpenLCA software and the EcoInvent34 database are utilized to calculate the environmental impact of 25 different building materials, as well as energy and electricity consumption. Swanton Pacific Ranch (SPR) in Santa Cruz County is …

New God Video Game, Evan Springer

Computer Science and Software Engineering

Artificial Intelligence is used in all sorts of ways in various types of media. AI is often applied to Interactive entertainment such as video games. One of the most important parts of designing an AI for a video game is considering how “intelligent” it should be for better user enjoyment. For instance, making the AI too simple can cause frustration and impatience in the player, and making the AI too advanced can result in unexpected side effects and/or the player not getting personal satisfaction from in-game accomplishments. My goal for this project was to figure out what level of “intelligence” …

Laboratory Glovebox, Jackson T. Tenne, Noah Fitzgerald, Scott Stirling, Danny Ho

Mechanical Engineering

The Laboratory Glovebox project aimed to create an affordable, functional, ready to use, airtight workstation enabling Dr. Ramanan Sritharan to continue his research of the mechanical properties of nanomaterials. When airborne, nanomaterials are a health risk if inhaled, so the design requires a hermetic seal to protect the user. The design was meant to emulate features of the glovebox used by Dr. Sritharan during his PhD research, but was optimized to meet a budget of $3000, much cheaper than comparable alternatives. Key design features included acrylic panels, a transfer chamber, glove mounts, and a main access door, all sealed to …

Dynamic Projection Mapping, Addison J. Sandvik

Computer Engineering

Projection mapping is a modern technology used in the live entertainment industry that uses objects as display surfaces. It is most frequently used at events like theatrical performances and art exhibitions to enhance the visual appeal of the production. However, most projection mapping applications are onto static surfaces or surfaces with predetermined movement, resulting in predetermined mappings. This method is suitable for many applications where the target surface is fixed, like a building, but is restrictive to cases where the target surface has an unfixed and unpredictable position, like a person. This project serves as a proof-of-concept for a dynamic …

Smart Bottle Firmware And Wireless Charging Integration, Khanh Thy Chau Le, Justin Truong

Electrical Engineering

In the past 3 decades, there has been a 60% increase of infants under the age of 2 who are considered obese [1]. The California Polytechnic State University, San Luis Obispo Child Development Department wants to research parents feeding habits and the Smart Bottle tool was built to aid this effort in finding the relationship between infant obesity and parent feeding habits. The Smart Bottle is a baby bottle meter attached to the bottom of the bottle. The goal of this device is to analyze the state of the feeding the parent is currently at and measure the amount of …

Wood Diaphragm Deflections. Part Ii: Implementing A Unified Approach For Current Clt And Wsp Practice, John Lawson

Architectural Engineering

Horizontal wood diaphragm systems, whether decked with conventional or mass timber panels, transfer wind and seismic loads to vertical elements of the lateral force-resisting system (LFRS), in flexible, rigid, or semi-rigid fashion. Characterizing and calculating the resulting diaphragm deflections determines the distribution of forces to critically loaded components and a significant portion of lateral building translations and rotations. Deflection equations for sheathed wood structural panel (WSP) diaphragms are well established in U.S. design standards in a 4-term expression that models flexural, shear, and fastener-slip deformations, but similar equations for cross-laminated timber (CLT) diaphragms have yet to unfold, despite growing industry …

Wood Diaphragm Deflections. Part I: Generalizing Standard Equations Using Mechanicsbased Derivations For Panel Construction, John W. Lawson, Scott Breneman, Marco Lo Ricco

Architectural Engineering

Horizontal wood diaphragm systems, whether decked with conventional or mass timber panels, transfer wind and seismic loads to vertical elements of the lateral force-resisting system (LFRS), in flexible, rigid, or semi-rigid fashion. Characterizing and calculating the resulting diaphragm deflections determines the distribution of forces to critically loaded components and a significant portion of lateral building translations and rotations. Deflection equations for sheathed wood structural panel (WSP) diaphragms are well established in U.S. design standards in a 4-term expression that models flexural, shear, and fastener-slip deformations and its full derivation using principles of mechanics is provided herein. Derivations of similar equations …

Nira Ya Mtumwa Aliye Huru: Granville Kachipumo's Life Of Slavery And Redemption In Nineteenth-Century East Africa, Zachary Tyler Levy

Master's Theses

Granville Kachipumo was the Universities Mission to Central Africa’s African-born teacher at Mkului in East Africa near today’s Muheza district of Tanga, Tanzania. He was taken from his home along River Lintipe at 10 to 12 years old. Granville Kachipumo’s life began with his family west of Lake Nyasa. Ripped from the arms of his parents, Granville Kachipumo faced two inland journeys, each with its complex forms of slave trade. From the inland environment, Granville Kachipumo navigated to the mission halls of Masasi and beyond. Kachipumo’s story is, as Arthur Cornwallis Madan stated, “a story of an intelligent boy who …

Teaching Matters: A Guide For Graduate Students (Review), Jamie Zabinsky

Feminist Pedagogy

No abstract provided.

Co-Simulation Of Active Magnetic Bearing Rotors Using Adams, Msc Apex, And Simulink, Shea A. Charkowsky

Master's Theses

Apex-Adams-Simulink co-simulation is applied to active magnetic bearing (AMB) rotors, demonstrating results unshown in literature, including continuous frequency response, and unavailable in known rotor dynamics software, including touchdown bearing impact. AMBs levitate rotors without contact, so they involve no friction, wear, lubrication, pollution, or shaft speed limits and are thus valuable for large, high-speed applications. Modeling of such rotors, necessary for safety and performance, simultaneously requires flexible body dynamics and advanced control design, but simulation programs tend to specialize in only one or the other. The co-simulation method combines multiple such programs—MSC Apex (finite element modeling), Adams (multibody dynamics), and …

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 …

Subject-Specific Human Knee Fea Models For Transtibial Amputees Vs Control Tibial Cartilage Pressure In Gait, Cycling And Elliptical Training, Ali Yazdkhasti

Master's Theses

Millions of individuals around the globe are impacted by osteoarthritis, which is the prevailing type of arthritis. This condition arises as a result of gradual deterioration of the protective cartilage that safeguards the ends of the bones. This is especially true of transtibial amputees, who have a significantly higher incidence of osteoarthritis of the knee in their intact limb than non-amputees. Engaging in regular physical activity, managing weight effectively, and undergoing specific treatments can potentially slow down the advancement of the disease and enhance pain relief and joint function. Nevertheless, the relationship between the type of exercise and its impact …

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 …

Theoretical And Experimental Study Of Active Magnetic Bearing Control Integrated On Bently's Rotor Kit, Arturo Mario Flores

Master's Theses

This thesis focuses on the comprehensive study of controlling a customized Active Magnetic Bearing (AMB) installed on Bently Nevada’s RK4 rotor kit in Cal Poly’s Vibrations and Rotordynamics Lab. The AMB was uniquely designed and manufactured by a Cal Poly senior project team to fit Bently’s rotor kit and the results of this research are distinctive to the custom system. To achieve practical functionality of the AMB system, we designed a controller a Virtual Instrument (VI) using the National Instrument software, LabVIEW. From the experimental study, we calibrated the programming to find unknown parameters of the AMB system and validated …

Nail Polish Epiphany, Mark Bieraugel

Library Scholarship

Do they really smell of marshmallow Peeps? I nervously sniffed my brightly polished fingernails as I walked to my on-campus video interview, where I would talk about what it was like being a gender non-conforming person at my workplace. My university wanted individuals’ experiences, mine included, to create a webpage full of written and video stories of a group of employees to show how inclusive we were. But back to my nails.

California Off-Road Engines And Components Life Span Assessment, Michael Mccullough, Lynn Hamilton

Agribusiness

The useful life and warranty periods for off-road equipment in California for engines rated at 37 kilowatts (kW) and greater have not been updated since the Tier 1 rule phased in from 1996 to 2000; for engines rated below 37 kW, not since the Tier 2 and Tier 3 rules phased in from 2000 to 2008. The California Air Resources Board (CARB) staff is seeking information regarding useful life and warranty to evaluate whether amendments to those requirements are necessary after two decades of technology advancement.

Cal Poly researchers called 55 service providers across the state of California to collect …

As-963-23 Resolution To Revise The Course And Term Withdrawal Policy, Academic Senate Instruction Committee, Collaborative Advising For Student Success Council, University Advising

Academic Senate Resolutions

Rescinds AS-103-80/IC, “Resolution Regarding Guidelines for Withdrawal from 31 Classes After the Census Date,” and further resolves that Cal Poly adopt the withdrawal policy attached to the resolution.

Design And Validation Of A Wearable Smartsole For Continuous Detection Of Abnormal Gait, Karoline M. Wucherer

Master's Theses

Residual gait abnormalities are common following lower limb injury and/or stroke and can have several negative impacts on an individual’s life. Without continuous treatment and follow up, individuals can be prone to chronic pain as abnormal gait may lead to non-physiological loading of the musculoskeletal system. The current industry gold standard for diagnosing abnormal gait requires specialty equipment that is generally only available at designated gait facilities. Due to the inaccessibility and high cost associated with these facilities, a wearable SmartSole device to continuously detect abnormal gait was proposed. A previous iteration of the SmartSole was unable to properly detect …

Evaluating The Field Efficacy Of Uv-C On Two California Strawberry Arthropod Pests, Jose Luis Alvarado Rojas

Master's Theses

The efficacy of two different autonomous Ultraviolet-C (UV-C) units on two spotted spidermite, Tetranychus urticae Koch (Acari: Tetranychidae), and greenhouse whitefly, Trialeurodes vaporariorum. (Hemiptera: Aleyrodidae). was tested in four commercial strawberry fields in California.

In 2020, California strawberry growers used 12 million pounds of active ingredients (AIs) to keep pests under economic thresholds. While pesticides are an important part of an integrated pest management program, their use poses threats to the environment and human health. To protect agricultural workers, the public and the environment, regulators in California have consistently limited or removed the use of certain pesticide AIs. For …

Analytical Pipeline To Facilitate Electroencephalography Pain State Identification In Patients With Chronic Low Back Pain, Emma Katharina Jacobs

Master's Theses

Chronic low back pain (cLBP) affects the quality of life of over 23% of American adults and places an immense burden on the economy.^1–3 To more effectively diagnose and treat cLBP, quantitative biomarkers are needed to objectively measure pain and better identify the underlying mechanisms of cLBP. The overarching goal of this work is to create an analytical pipeline to investigate brain activity patterns measured with electroencephalogram (EEG) data of cLBP patients treated with transcutaneous spinal cord stimulation (tSCS). The specific aims of this project are to 1) investigate whether there is a difference between baseline EEG measurements and …