Digital Commons Network^™

Physiological Development Of Hypertension As A Result Of High-Fat Diet Induced Obesity, Michael Nguyen

Williams Honors College, Honors Research Projects

This literature review focuses on the physiological development of obesity due to the consumption of diets rich in fats and the resulting pathophysiological development of hypertension. This review aims to identify causes of obesity and hypertension as well as current treatments to propose future areas of study. The literature review analyzed a wide variety of literature sources on obesity and hypertension published between the years 1995 and 2025. The review identifies high-fat diets as a cause of obesity and the resulting health effects of elevated leptin, insulin, and nervous system activity as contributors to the development of hypertension. Future areas …

The Effect Of Minimum Wage On Household Debts And Delinquencies, Payton G. Rader

Williams Honors College, Honors Research Projects

This paper examines how increases in binding minimum wages affect various types of household debts and delinquency rates. Within this paper, household debt is defined as the combined sum of auto loans, credit card debt, mortgage debt, and student loan debt. The goal of the analysis is to conclude whether minimum wage increases are contributing to America’s growing debt crisis. The answer to this question likely relies on whether or not minimum wage increases cause unemployment. This is because unemployment can contribute significantly to debt levels when unemployed people rely on credit for day-to-day transactions or payments. Traditional economic theory …

A Decade Of Programming Languages: Trends In Popularity And Influence, Jonathan C. Erb

Williams Honors College, Honors Research Projects

Programming languages play a central role in open-source software ecosystems, yet their adoption, visibility, and influence shift over time as technologies, developer communities, and industry practices evolve. The study aims to investigate long-term trends in programming-language usage on GitHub from 2014 through 2024, focusing on ten major languages that represent diverse domains and ecosystems. Using repository metadata, engagement metrics such as stars and forks, and language-level code statistics measured with cloc, the analysis will examine changes in repository creation, code contribution volume, and popularity. Since popularity remains an unsettled and multidimensional concept, part of this research involves determining how it …

A Digitized History Of Undergraduate Student Government At The University Of Akron, Samuel Stillion

Williams Honors College, Honors Research Projects

The digitization process of a representative sample of the physical records of the University of Akron's Undergraduate Student Government held in the University Archives and Special Collections, including notes for future archive projects with the larger records of Undergraduate Student Government

Eletric Charging Arm Mechanism - E-Charm, Jacob A. Lewis, Gabriel A. Greer

Williams Honors College, Honors Research Projects

As demand for electric and hybrid vehicles continues to rise, many EV owners rely on home charging in their garages. Gabriel Greer and I’s Senior Design Project, the Electric Charging Arm Mechanism (ECHARM), addresses this by creating a robotic system that autonomously detects a vehicle’s charging port, connects to it, and returns to a rest position when charging is complete. ECHARM is designed as a six-axis robotic arm with wrist and shoulder joints driven by stepper motors through custom cycloidal drive gearboxes. A closed-loop control system using rotary potentiometers ensures precise motion control. At the end of the arm is …

The Discord Revolutions: A Study Of Media Influence And Regime Changes, Justin C. Eason

Williams Honors College, Honors Research Projects

This project will be a paper analyzing the influence of Media on regime changes, specifically as it pertains to the two recent revolutions in Nepal and Madagascar. I will show how past regime changes and historical events have been shaped by media influence, and how the revolutions in Nepal and Madagascar are different, and could set a different pattern when compared to previous rebellions.

Fact Vs. Fiction: Understanding The Influence Of Crime Procedural Television On College Student Choice Of Major, Mia J. Moore

Williams Honors College, Honors Research Projects

As it continues to gain popularity, crime-based media (i.e., crime procedural television shows, true crime podcasts) contributes to the public’s perception of the criminal justice field. Little research exists on the “CSI Effect,” the phenomenon in which criminal justice majors are drawn to the field based on the glorified depictions of the profession portrayed in the media. Previous research on influences behind choice of major suggest a variety of other influential factors, such as personal interest in the subject, friends or family members, or personality characteristics (Beggs et al., 2008; Hoag et al., 2017; Porter & Umbach, 2006). The current …

Methods Of Euthanasia In Laboratory Animals, Jaiden L. Corley

Williams Honors College, Honors Research Projects

The current honors research project will focus on the current use of carbon dioxide (CO2) as a means of euthanizing laboratory mice. CO2 is commonly used as a means of euthanizing laboratory animals and has been a standard of practice for mamy years. it is regarded as fast, painless, and efficient in overwhelming the respiratory control centers of the brainstem and resulting in respiratory depression and death. However, there continues to be debate and ongoing research regarding the 'humaneness' of this approach to euthanasia, and the American Veterinary Medicine Association (AVMA) suggests the inclusion of isoflurane (a volatile anesthetic) as …

Analyzing The Effect Of Network Properties On Self-Assembly Of Polymer Grafted Nanoparticles In Vitrimer Nanocomposites, Tyler Eakin

Williams Honors College, Honors Research Projects

This project aims to show the how polymer grafted nanoparticles behave in a vitrimer composite network. The effect of varying the network parameters such as the grafting density, the volume fraction of nanoparticles, and the ratio of polymer chain length : graft chain length will be studied. The assemblies formed by the polymer grafted nanoparticles will be visually analyzed and assigned one of 5 possible conformations. A phase diagram of grafting density vs network chain length / graft length will be constructed. The phase diagram will provide valuable insight into how nanoparticle self-assembly can be manipulated through changing network parameters

The Quantifiable Effects Of Constitutional Interpretation, Carter Ridgway

Williams Honors College, Honors Research Projects

The Constitution of the United States is a document that has been for centuries the focus of academic inquiry and scrutiny from a range of differing methodological approaches. Among these factions vying for supremacy in the realm of constitutional interpretation have risen to predominant methodologies. On one side lies the originalist method which is formed around the core principle that the best way to protect the constitution and the rights granted therein is to interpret from the perspectives and values of those who constructed it. Alternatively, those who prefer the doctrine of living constitutionalism, sometimes referred to as constitutional realism, …

The Effects Of Temperature On The Persistence Of Environmental Dna In Self-Preserving Filters, Megan Boche

Cal Poly Humboldt theses and projects

This study investigates the effectiveness of self-preserving filter packs (filters designed to passively dry and stabilize captured eDNA without liquid preservatives or cold-chain) in maintaining the integrity of environmental DNA (eDNA) under varying temperature and environmental conditions. eDNA degradation was assessed at three temperatures (23, 33, and 43 °C) using water collected from two distinct study sites that differ in species composition and salinity, a freshwater hatchery and a brackish lagoon. To capture early degradation dynamics, eDNA concentrations were quantified using quantitative PCR assays immediately after filtration (t = 0) and after 2, 4, 8, 16, 32, and 64 days …

Repairing Estranged Death: Care, Politics And Ecology In The Us Funeral Industry, Cecilia Catherine Rodriguez

Cal Poly Humboldt theses and projects

The industrialization of death practices in the US has separated humanity from natural cycles while centering white settler colonial norms that marginalize other cultural ways of caring for the dead. Through necropolitics, the contemporary death industry embodies capitalist values of commodification and a monopolization of care, separating death from community and its ecological cycles. Black and Indigenous feminist knowledges understand death as not a discrete event but instead as an ongoing process that shapes our relationships with both the human and more-than-human worlds. Engaging with feminist political ecologies, I extend a conversation about care and repair to contemporary death practices …

Postfire Habitat Use And Density Of Pacific Martens (Martes Caurina) In Lassen National Forest, California, Deirdre L. Replinger

Cal Poly Humboldt theses and projects

Increasing frequency, size, and severity of wildfires in western North America threatens forest-dependent wildlife species. The Pacific marten (Martes caurina) has historically been associated with mature, structurally complex forest throughout most of its range. Recently, martens have been detected in forests burned at high severity by the 2021 Dixie Fire—the largest recorded single fire in California state history. I used non-invasive remote camera traps and hair snares (n = 166 sites) to assess marten habitat use and density using spatial occupancy and spatial capture-recapture models. I detected martens across the burn severity gradient (unburned to high-severity) at …

Development Of The Core Lit Apparatus For Seaweed Hatcheries (Clash) Bioreactor Using A Germplasm Approach, Phillip O. Tahimic

Cal Poly Humboldt theses and projects

In comparison to the Asian aquaculture industry, the United States has minimal seaweed production. There are several drivers of the limited industry in the US, such as regulatory constraints and limited market demand, but the ability to scale is a considerable barrier to commercialization. One possible solution is the development of land-based systems that integrate bioreactors, which utilize fewer resources and do not wholly rely on an oceanic flow-through system. This study assessed the application of a modular bioreactor, known as Core Lit Apparatus for Seaweed Hatcheries (CLASH), as a nursery system and open-source project designed to expand land-based seaweed …

The Effect Of Automated Self-Monitoring On The Behavior Of Individuals Diagnosed With Pre-Diabetes Or Type 2 Diabetes, Leti Phillips Armenta

Cal Poly Humboldt theses and projects

Type 2 diabetes (T2D) and prediabetes affect millions of individuals in the United States and require effective self-management strategies to reduce glucose variability and improve health outcomes. This study evaluated the effects of automated self-monitoring using the Dexcom G7 continuous glucose monitor (CGM) on glucose management and health-related behaviors among adults diagnosed with prediabetes or at risk for T2D. A repeated-measures design was used to asses’ participants across two distinct 10-day periods. Data included CGM glucose readings, self-report questionnaires, and social validity measures. Results indicated that participants demonstrated reduced glucose variability, fewer prolonged glucose spikes, and increased engagement in health-related …

Land Cover Classification Using Optimized Imagery Resolution And Machine Learning Algorithms For A Long-Term Monitoring And Restoration Project, Jessica R. Suoja

Cal Poly Humboldt theses and projects

Ecosystem services and functions are prone to water resource exploitation resulting in cascading effects that include decrease of biodiversity and loss of riparian vegetation, a keystone habitat in desert riparian ecosystems. Mono Lake is a prime example of overexploitation of water resources leading to legal action and eventually a legally mandated long-term monitoring and restoration project. Monitoring and restoration projects can benefit from techniques such as remote sensing and machine learning algorithms to generate accurate land cover classification maps for calculating land cover change over time. However, the spatial resolution of remote sensing imagery and the machine learning algorithms chosen …

Supporting Risky Outdoor Play Through Professional Development: A Quasi-Experimental Study Of Tk–6 Educators’ Attitudes, Justin Ross Burrill

Cal Poly Humboldt theses and projects

Children’s opportunities for active outdoor risky play have declined in many educational settings, despite evidence that manageable risk supports physical activity, self-regulation, confidence, resilience, and social participation. Educator attitudes and school culture may play an important role in determining whether children are offered developmentally appropriate opportunities for challenge, exploration, and autonomy. This quasi-experimental, single-group pretest-posttest study examined whether participation in a single-session professional development workshop was associated with changes in educators’ tolerance of risk in children’s play. Thirty educators attended a workshop focused on risky play, hazard-risk differentiation, inclusion of children with disabilities, loose-parts play, environmental affordances, and practitioner-informed implementation …

“Twist But Don’T Break:” Constellating Past And Present Barriers In Black Queer Multimodal Publishing That Shift Text Into Subtext; Addressing Acceptance Into Queer Creative Communities And The Void Of Black Voices Within, Kae Ann Dennert-Frederick

Cal Poly Humboldt theses and projects

What does it look like to reframe our understanding of intersectional work? Looking at multimodality I will walk through the multiple frameworks by asking how Black Queer publishing of Young Adult fiction uses visuals to describe what cannot be said and what choices are made to show community structure and language, while also having to adapt for publication standards. I have researched this by looking into examples of Queer publishing (any representation of queerness in a form of publishing—in the text and sometimes in the authors' identity), as well as authors’ use of visuals to say what cannot be said …

Queering Poetry Workshops, Dobby Morse

Cal Poly Humboldt theses and projects

To what extent do participants report that a poetry workshop builds connections between poets and strengthen their confidence in writing? What do participants want or expect from a poetry workshop?

Through this project I hope to attend and host poetry workshops with an emphasis on the queer community. I will collaborate with campus and community organizations like Queer Humboldt and other organizations that are interested in exploring queer experiences through writing, connection, and meditation. This project will serve as a how-to guide for those seeking to conduct their own workshops.

Multiple Burn And Forest Characteristics Affect Gray Fox (Urocyon Cinereoargenteus) Occurrence Following A California Megafire, Amida Zohar Verhey

Cal Poly Humboldt theses and projects

In western North American forests, predator communities are faced with changing fire regimes and increased fire severity and size, particularly with megafires (>10,000 ha). As some wildlife communities may restructure following the loss of apex consumers, understanding post-fire space use of mid-trophic carnivores may inform species composition in these forests. I compared gray fox (Urocyon cinereoargenteus) occupancy in and around the 2021 Dixie Fire, the largest single-ignition fire in California state history, to examine which spatially variable burn and forest characteristics affected the space use of a widespread generalist mesopredator. Using 210 camera traps placed in 2023, …

Managing Green And Sustainable Construction Projects: A Computational Analysis Of Associated Risks And Challenges For Improved Performance, Bahaa Chammout, Islam H. El-Adaway

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

Green and sustainable building practices have emerged as effective strategies to address the environmental challenges posed by the construction industry. This includes unsustainable resource utilization, excessive waste production, greenhouse gas emissions, and high energy consumption. However, the integration of green and sustainable initiatives in construction introduces distinct risks and challenges that affect project management and may lead to claims and disputes. To this end, and while previous research examined dispute causation across various aspects of the construction industry, there is limited investigation of the unique and complex nature of risks and challenges - and consequently conflicts, claims, and disputes - …

Managing And Accelerating The Circular Economy Transitions Within The Construction Value Chain Using Network Governance And Game Theory Systems Perspectives, Radwa Eissa, Islam H. El-Adaway

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

The fragmented nature of the construction industry has hindered its transition toward circular economy (CE) practices. While game theory (GT) has been successfully applied to support the strategic decisions of CE transitions in other sectors, CE-GT models in the construction domain remain extremely limited. This paper addresses two research questions: (1) how are CE network governance activities currently modeled using GT across domains? (2) How can such models be transferred and adapted to solve strategic interactions within the construction value chain in a manner that enables CE practices to emerge as equilibrium outcomes? These questions are driven by the need …

Soil Freezing Characteristic Surface For Partially Frozen Soils, Antai Dong, Xiong Zhang, Ming Xiao

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

The soil freezing characteristic curve (SFCC), which relates unfrozen water content to temperature, is a fundamental constitutive relationship in frost heave simulations. However, the influence of soil suction, another critical state variable, is often neglected. This study highlights how the SFCC is significantly affected by suction conditions, with unfrozen water content varying markedly between saturated (suction = 0) and completely dried (suction = ∞) conditions at the same subfreezing temperature. Recognizing this limitation, the concept of the soil freezing characteristic surface (SFCS) is proposed to incorporate the impacts of both temperature and suction on unfrozen water content. After that a …

Carbonated Blast-Furnace Slag As Supplementary Cementitious Material: Phase Transition And Effect On Cement Hydration, Gao Deng, Nannan Zhang, Wenyu Liao, Yongjia He, Linnu Lu, Lingyu Chi, Hongyan Ma

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

Blast-furnace slag, which contains high levels of CaO (and MgO), holds potential as a feedstock for CO₂ capture and storage. This study investigates the phase transitions occurring during the wet carbonation of ground granulated blast-furnace slag (GGBFS), characterizes the physical and chemical properties of carbonated GGBFS (CS), evaluates its pozzolanic reactivity, and examines the microstructure and performance of cement pastes blended with GGBFS or CS. The findings reveal that aragonite and calcite, the primary carbonation products, precipitate on the surface of GGBFS, hindering its dissolution and thereby reducing both the pozzolanic reactivity and the early strength of cement pastes. …

Biaxial Bending Response Of Prestressed Concrete Girders Subjected To Accidental Asymmetric Prestressing Strand Loss, Haitham Abdelmalek, Mohanad Abdulazeez, Ahmed Ibrahim, Mohamed Elgawady

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

Bridge prestressed concrete girders are vulnerable to sudden rupture of prestressing strands caused by accidental collisions with over-height trucks. These incidents often result in the asymmetric loss of prestressing strands and concrete sections, generating a biaxial bending moment caused by the combined effects of lateral bending and existing service loads. The induced lateral bending moment reduces the flexural resistance of prestressed concrete (PC) girders. However, the current AASHTO LRFD (load and resistance factor design) provisions for flexural resistance in PC members do not explicitly address the complexities introduced by biaxial bending, leaving the extent of strength reduction uncertain. This paper …

Multi-User Collaboration In Augmented Reality For Beyond-Visual-Line-Of-Sight Bridge Inspection, Joel Murithi Runji, Genda Chen

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

Bridge inspection traditionally relies on scaffolds, snooper trucks, and aerial robots for hard-to-reach areas beyond the visual line of sight of inspectors. This study automates the collaborative inspection workflow for multiple users when inspecting hard-to-reach bridge sections by interfacing low-cost multimodal sensors mounted on a magnetically wheeled climbing robot with augmented reality devices in a cyber-physical system. Non-destructive and visual sensors provide near real-time information of automated steel thickness measurements and visual observations of corrosive regions, respectively. The visual sensors also support robot teleoperation. The cyber-physical system is evaluated for its user-friendliness and performance. The system performance is quantified by …

Evaluation And Design Of A Footing Hybrid Connection For Innovative Hollow-Core Fiber-Reinforced Polymer–Concrete–Steel Composite Columns, Mohanad M. Abdulazeez, Mohamed A. Elgawady

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

To support the advancement of accelerated bridge construction in high-seismic regions, this study investigates a novel prefabricated column-to-footing connection designed for improved resiliency, constructability, and cost efficiency. The socket connection utilizes hollow-core fiber-reinforced polymer–concrete–steel (HC-FCS) columns with embedded corrugated steel pipes (CSPs). The composite HC-FCS column consists of a concrete shell sandwiched between an outer fiber-reinforced polymer tube and an inner steel tube. The inner steel tube is embedded into the footing connection of the HC-FCS column. The same authors tested the innovative socket connection on a large HC-FCS column under seismic loads, showing high ductility, strong moment and drift …

First Remi Experiments At A Cryogenic Ion Storage Ring, M. Schulz, F. Herrmann, W. Zhang, A. Dorn, M. Grieser, F. Grussie, H. Kreckel, O. Novotny, A. Wolf, T. Pfeifer, C. D. Schröter, R. Moshammer

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

We have recorded double, triple, and quadruple coincidences between neutralized projectiles, recoiling target ions, and two electrons created in collisions of slow anions with neutral atoms. The experiments were performed at the cryogenic storage ring in Heidelberg. The recoil ions and ejected electrons were momentum-analyzed using a Reaction Microscope (ReMi) spectrometer. Various processes involving electron detachment from the projectile accompanied by various transitions in the target were investigated. Detachment without any transition in the target is qualitatively well described by a quasi-free electron model in the case of an Ar target. In detachment with single target ionization, no signatures of …

Exploring Aggregate Morphological Characteristics Under Laboratory Polishing For Enhanced Pavement Skid Resistance, Ahmed S. El-Ashwah, Magdy Abdelrahman

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

As the use of recycled asphalt pavement (RAP) in pavement construction grows for sustainable development, it becomes essential to investigate potential frictional deterioration over time. This study evaluated the friction properties of recovered RAP material aggregates compared with raw aggregates across various polishing cycles. The micro-Deval test was employed to simulate aggregate loss of texture, while morphological and friction properties were measured using an aggregate imaging measurement system (AIMS-II), along with a British pendulum tester (BPT) and dynamic friction tester (DFT). Additionally, Fourier transform infrared spectroscopy (FTIR) was employed to assess its potential in determining the origin and composition of …

A Four-Step Thermocatalytic Route For Converting Co2 Into High-Purity Oxalic Acid, Hao Feng, Muhammad Kashif Khan, Lei Li, Hongyan Ma, Xinhua Liang

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

This research outlines a four-step methodology for transforming CO₂ into high-purity oxalic acid. CO2 was first sequestered as KHCO₃ through its reaction with aqueous KOH, followed by hydrogenation using a supported AgPd/CNT catalyst in a batch reactor at an initial H₂ pressure of 60 bar and a temperature of 150°C. The formate yield reached 91.8% at optimum conditions. Potassium formate in the solid state was thermally coupled in the presence of KOH at 400°C under N2 flow, yielding potassium oxalate of up to 76% yield. The final step was the selective precipitation of potassium oxalate with ferrous …