Digital Commons Network^™

Not Just An Ad: Exploring Exposure, Persuasion Knowledge, And Health Misinformation On Social Media, Danielle Murray

University Honors Theses

This study explores how exposure to sponsored health and fitness content on social media influences users' perceptions of influencer motivation and belief in health-related misinformation. Drawing on parasocial interaction (PSR), attribution theory, and influencer marketing research, this study investigates two hypotheses: that frequent exposure to branded content is positively associated with (1) perceptions of influencers as commercially motivated and (2) belief in pseudoscientific health myths. A cross-sectional online survey (N = 104) was conducted using convenience sampling of adult social media users. Results partially supported the first hypothesis: exposure frequency was positively correlated with recognition of persuasive intent, but …

Identity, Bodies, And Time: Analysis Of Transgender Education Curricula In K Through 12 Grades, Dean Weiler-Zilberman

University Honors Theses

The author analyzes lesson plans that focus on education around gender and transgender subjects--sourced from Sexual Orientation and Gender Institute (SOGI) 123 and Advocates for Youth (AFY)--and puts them in conversation with key literature on transgender education. What surfaces from their interaction are clear strong areas that support transgender education and gaps that fail transgender students.

Bridgeless To Better Burnside: Reclaiming Burnside, Reconnecting The West Side, Michael Azierski, Brian Bill, Eric Gasper, Alex Gill, Jackson Morrison, Michel Rojas

Master of Urban and Regional Planning Workshop Projects

This report, produced for Better Block PDX, is a resource for shaping the future of lower West Burnside Street during and after the 2028–2033 Burnside Bridge closure. It captures current conditions, community input, principles of transportation planning and placemaking, and recommended interventions to build a shared vision for transforming the corridor from a barrier into a pedestrian-friendly, vibrant street. Framed around a two-phase timeline, temporary interventions during the bridge closure and permanent improvements after the new bridge opens, it offers a snapshot of community visions and a blueprint for turning those visions into action. Recommended interventions for the new bridge …

Building Adaptive Capacity Through Community Visioning, Silas Carr, Isaiah Jackman, Brandon Huezo, Lara Opeifa

Master of Urban and Regional Planning Workshop Projects

East Portland represents one of Oregon’s most diverse communities. This rich cultural tapestry reflects the strength and resilience of communities who have built vibrant neighborhoods despite facing systemic exclusion and displacement. This project focuses on community engagement efforts undertaken in collaboration with the Rosewood Initiative, a community-based organization operating in East Portland. However, the legacy of discriminatory policies and practices has created concentrated challenges in East Portland, which have relegated many residents to areas with inadequate infrastructure, limited access to services, and heightened exposure to environmental hazards. Climate change intensifies these challenges, with East Portland experiencing more severe urban heat …

What Language Are We Speaking?: Marketing Information Literacy On University Library Websites, Aleksandar Golijanin

Communications in Information Literacy

This study investigates how Canadian university libraries communicate information literacy (IL) to non-library faculty members on faculty-facing web pages. A content analysis was conducted of websites from institutions affiliated with the Canadian Association of Research Libraries (n = 25) to identify trends in the terminology used to describe IL. The findings reveal that the term "information literacy" appears with varying frequency across website headings, subheadings and body text, while terms like “research skills” and “critical information use” may appear in its stead. University libraries may intentionally be employing these terms to enhance faculty engagement in response to the existing …

Rebuilding Consent: Fear, Trust, And The Future Of Nuclear Energy, Austin Dunham

University Honors Theses

This thesis traces the cultural and emotional roots of nuclear fear in the United States and explores how those inherited anxieties continue to shape public resistance to nuclear energy in the face of a worsening climate crisis. Drawing on personal narrative, risk perception theory, and the history of nuclear discourse - from Hiroshima to Chernobyl to today - the research examines how trust, rather than technology, remains the largest barrier to progress. By analyzing the stories we tell about energy, disaster, control, and overall perceived risk, this work asks what it would take for Americans to imagine nuclear energy not …

Raising The Roof For All: Integrating Companion Planting Ecology, Policy And Community In Portland's Green Roof Future, Zoe Edelman

University Honors Theses

Green roofs, or ecoroofs, provide environmental and social benefits in urban areas. Ecoroofs manage stormwater by absorbing rainfall, reducing rooftop temperatures, supporting pollinators, and offering green space in densely developed cities. Portland, Oregon has adopted progressive policies that encourage green roof installation through incentives and building requirements. However, many ecoroofs in the city are underperforming due to poor maintenance, low public awareness, and limited access to rooftop spaces. This thesis explores whether companion planting can improve the ecological performance and long- term viability of extensive green roofs. A rooftop experiment at Portland State University tested the growth of radishes, with …

More Than Hormones: Psychological Consequences Of The Medicalized Menopausal Experience, Haley Derrickson

University Honors Theses

Menopause, a transitional period that roughly half the population may experience, has a high degree of variability in onset and intensity of symptoms, one of which is depression. It is also a period in which the lives of those transitioning are highly medicalized. This literature review investigates how medicalization has increased since the term was created, and how it impacts perimenopause, menopause, and mental health.

American Consumer Culture And Social Media Polarization: Analyzing Twentieth Century Trends And Their Effects On Twenty First Century Politics, Max Lally

University Honors Theses

The emergence of social media as a mainstream communication technology during the early twenty first century has had an outsized impact on the United States' political system. By analyzing trends in American culture and economics beginning in the decades following the end of World War Two, the circumstances that shaped social media during its development can be tied to long term historical changes. Shifts away from traditional models of community and towards rising individualism reshaped communication with both political allies and opponents. Generational shifts in political attitudes have heightened these divisions as well, as younger and liberal perspectives challenge traditional, …

The Competitive Advantage Of Storytelling, Jennifer V. Carroll

University Honors Theses

Ava Roasteria Company, a family-owned coffee business in Washington County, Oregon, faces the challenge of expanding in a saturated market. Despite a compelling origin story rooted in environmental remediation and community revitalization, Ava has not utilized this narrative in its branding. This capstone project applied strategic business and marketing frameworks to identify narrative storytelling as a key competitive advantage. Research shows that authentic, narrative origin stories of small businesses that align with stakeholder's values and beliefs can foster emotional connection, loyalty, and brand differentiation. Ava's history and alignment with the Portland culture of sustainability and social responsibility is an untapped …

Gianjara's Ribs: The Ecosystem, Body, Animalia, And Politic, Linus Gomez Ellis

University Honors Theses

This work is a series of four six foot tall full-body portraits of people, which are displayed alongside an actual, physical item or garment present in the associated painting. The purpose of this is to blur the line between the fiction of the individuals depicted and the viewer. By creating "portals" through which to view them as equals in stature, Linus Gomez Ellis is taking something that can be seen in the ecosystem of this fiction and making it into an objective reality. The most enduring, well preserved, and eternal pieces of history and anthropology are tall tales. This ecosystem, …

Examining Long-Term Care For Ncaa Student-Athletes: Improving Concussion Protocols And Healthcare, Sydney Watson

University Honors Theses

Sports-related concussions (SRC) are a significant issue in collegiate athletics, particularly in high-impact sports. While the National Collegiate Athletic Association (NCAA) has protocols for immediate injury management, they don't fully address the long-term effects retired athletes experience. This paper examines whether former NCAA athletes who suffered from SRC should receive more comprehensive concussion-related healthcare. Findings reveal that current NCAA measures, such as baseline assessments and return-to-play protocols, fall short in addressing the lasting physical, cognitive, and emotional challenges of student-athletes who suffered multiple SRC. Protocols and procedures set by professional leagues like the NFL and NHL highlight the NCAA's gaps …

Generative Ai For College Students: A Collaboratively Developed Online Microcourse On Genai In The College Classroom, Amber Willenborg, Tessa Withorn

Communications in Information Literacy

Academic libraries have taken a variety of approaches to addressing the opportunities and challenges of generative artificial intelligence (GenAI) in higher education. For universities that have no standard policy around GenAI, instructors are left with little guidance on how to teach students about GenAI in the classroom and may have varying levels of comfort with GenAI and its applications. To address the need for more instruction around GenAI, a team of librarians and university writing center and digital media suite staff took an innovative approach to teaching AI literacy by creating a six-lesson microcourse in their learning management system all …

Price-Signal-Based Control Strategy For Heat Pump Water Heaters In Demand Response Applications, Othman A. Murad

Dissertations and Theses

This work presents a price-signal-based control strategy for residential Heat Pump Water Heaters (HPWHs) aimed at reducing electricity costs and shifting load away from high-price periods. By integrating the California Load Flexibility Research and Development Hub (CalFlexHub) prototype price signals, the Consumer Technology Association (CTA-2045-B) communication protocol, and the Object-oriented, Controllable, High-resolution Residential Energy (OCHRE) simulation framework, a rule-based controller was developed to align HPWH operation with dynamic electricity pricing while maintaining hot water availability.

The control strategy was evaluated through two case studies: one using a fixed water draw profile under varying levels of price signal foresight, and another …

The Silk Butterfly Effect: Japan And The United States 1853-1941, Melodee Birlew

Dissertations and Theses

This study examines the rise and fall of the silk industry in both the United States and Japan in the first half of the twentieth century. While silk had been a valuable commodity for millennia for royalty, aristocrats, and the extremely wealthy, the opening of Japan's ports in 1853 soon made silk more accessible to lower classes around the world.

Consequently, Japan's newfound wealth catapulted her status among other rich and powerful nations. Japan's military might, financed in large part by the silk trade and displayed by her victory over Russia in 1905, earned her even more prestige on the …

Influencing Factors Of Angle-Of-Arrival Estimator Based On Deep Learning, Guohao Pang

Dissertations and Theses

Deep learning (DL)-based angle-of-arrival (AoA) estimation offers significant advantages over traditional signal processing methods, especially in complex and high-noise environments. However, situational complexity and differences in hardware can significantly impact the estimator's performance. It is therefore of interest to investigate the relationship between the performance of deep learning models and the variation of physical parameters such as the number of signal sources, the number of receiving antennas, and the signal-to-noise ratio (SNR). In this study, we investigate the impact of these variations on deep learning-based AoA estimation by systematically analyzing how the variations in the characteristics of the received signal …

Their Will Is Wealth: American Billionaires, Illiberal Capital, And Their Immunity To Federal Law, Conor Kawika Carroll

Dissertations and Theses

Billionaires are inherently unique political actors. They, and their wealth, are a species apart. This rarity is measurable by quantifying relative consequences for actions made on behalf of that wealth. This thesis explores whether or not a billionaire's political power provides them with immunity to federal laws and regulations that govern wealth and its political use. The objective of this research is two-fold: to illustrate the scholarship gap regarding American billionaires and their relative immunity from federal law, and to instigate academia to study billionaires politically at increasing rates, providing more data for lawmakers regarding the most economically powerful political …

The Aquatic Symbiosis Genomics Project: Probing The Evolution Of Symbiosis Across The Tree Of Life, Matthew Berriman, Victoria Mckenna, Roxanne Beinart, John M. Archibald, Ute Hentschel, Michael N. Dawson, Jose V. Lopez, Patrick J. Keeling, Jillian M. Petersen, Anne W. Thompson, Multiple Addiional Authors

Biology Faculty Publications and Presentations

We present the Aquatic Symbiosis Genomics Project, a global collaboration to generate high quality genome sequences for a wide range of eukaryotes and their microbial symbionts. Launched under the Symbiosis in Aquatic Systems Initiative of the Gordon and Betty Moore Foundation, the ASG Project brings together researchers from across the globe who hope to use these reference genomes to augment and extend their analyses of the dynamics, mechanisms and environmental importance of symbioses. Applying large-scale, high-throughput sequencing and assembly technologies, the ASG collaboration will assemble and annotate the genomes of 500 symbiotic organisms – both the “hosts” and the microbial …

Restricted Nonlinear Simulations Of Flow Over Riblets: Characterizing Drag Reduction And Its Breakdown, Xiaowei Zhu, Bianca Fontanin Viggiano, Benjamin A. Minnick, Dennice Gayme

Mechanical and Materials Engineering Faculty Publications and Presentations

The restricted nonlinear (RNL) model is employed as low-order representation of turbulent flow over riblets at 𝑅𝑒𝜏 ≈ 395. Comparisons with direct numerical simulations (DNS) verify the ability of the model to accurately capture low-order statistics, as well as trends in drag-alteration and secondary motion as a function of riblet geometry and spacing. We demonstrate the ability of the RNL model to reproduce additional flow features by decomposing the roughness function to isolate contributions from the total stress and comparing its predictions to DNS data. An analysis of the spectra of Reynolds shear stress shows that the RNL model captures …

Levels Of The Nicotine Analog 6-Methyl Nicotine As A Naturally Formed Tobacco Alkaloid In Tobacco And Tobacco Products, James F. Pankow, Wentai Luo, Kevin J. Mcwhirter, Mohana Sengupta, Robert M. Strongin

Civil and Environmental Engineering Faculty Publications and Presentations

S-6-methyl nicotine (S-6MN) has appeared as a nicotine substitute in commercial electronic e-cigarette products and pouches, including with the claim that such use is not regulated under current U.S. law. This work describes an analytical chemistry based search for the natural S/R presence of 6MN and three other MN compounds in additive-free cured leaf tobaccos and in multiple commercial tobacco products. The samples were extracted using 5 N NaOH, then methyl t-butyl ether. The extracts were analyzed using gas chromatography (GC) with mass spectrometric (MS) detection, and liquid chromatography (LC) with high resolution MS/MS detection. GC peaks with the correct …

The Electrostatic Charge On Exuded Liquid Drops, Schuyler Arn, Pablo Illing, Joshua Mendéz Harper, Justin C. Burton

Electrical and Computer Engineering Faculty Publications and Presentations

Fluid triboelectrification, also known as flow electrification, remains an under-explored yet ubiquitous phenomenon with potential applications from material science to planetary evolution. Building upon previous efforts to position water within the triboelectric series, we investigate the charge on individual, millimetric water drops falling through air. Our experiments measured the charge and mass of each drop using a Faraday cup mounted on a mass balance, and connected to an electrometer. For pure water in a glass syringe with a grounded metal tip, we find the charge per drop (Δ/Δ) was approximately -5 pC g to -1 pC g. This was independent …

Helmholtz Cage: Software Development And Implementation For Cubesat Testing, Gustavo A. Cotom Lopez

University Honors Theses

This paper details the successful development and deployment of a Helmholtz cage system, designed to produce precisely controlled magnetic fields for testing and calibration purposes. The core focus was on creating a robust, modular software architecture enabling independent current modulation on each axis, comprehensive serial communication between multiple microcontrollers, and real-time data acquisition from the MR3 magnetometer. All software components, including the serial communication drivers, control algorithms, command line interface, and calibration routines, were developed from the ground up. The system was fully operational upon completion: all hardware components functioned as intended, serial communication with each subsystem was reliable, and …

A Resource-Based Perspective Of Stem Career Development: A Latent Class Analysis, Erika Ann Schemmel

Dissertations and Theses

Through technological developments and the growing concerns around climate change, the need and demand for electric vehicles has been steadily increasing. A trained and qualified STEM workforce is required to meet these demands, yet standard STEM education may not be sufficient. The STEM development program centered in the present study is a collegiate workforce development program that provides North American students with training and hands-on experience in the engineering of electric vehicles. Drawing from central principles of COR theory, the present study explores the experiences of students within the program utilizing a resource-based perspective and a mixed-methods approach. First, the …

Customer Attractiveness In Public Procurement - One Size Does Not Fit All, Kati Loijas, Aki Jaaskelainen, Elina Karttunen, Frederik G. S. Vos

Business Faculty Publications and Presentations

Purpose:

The purpose of this study is to provide new insights into the differences between the attractiveness drivers in different types of public procurement (i.e. efficient, technological, adapted and experimental). Design/methodology/approach This study used a qualitative multiple-case study design. The study examined eight public procurement cases by interviewing the representatives of 18 suppliers and, through cross-case analysis, formulated a framework of customer attractiveness drivers for different types of public procurement. Findings This study reveals differences in customer attractiveness drivers between efficient, technological, adapted and experimental public procurement. This study finds that economic and market growth drivers are only sufficient for …

Detecting And Analyzing Frequency Events In Power Systems Using Tunable Parameters-Based Algorithms: Development, Optimization, And Analysis, Hussain A. Alghamdi

Dissertations and Theses

This dissertation addresses the challenge of detecting frequency events in diverse power systems by enhancing existing frequency event detection methods through detection process modifications and developing unique tunable parameters. Since system characteristics differ across regions, frequency event detection algorithms must be customized by domain experts for each balancing area using tunable parameters. By optimizing these parameters for specific power system, the algorithms can accurately detect frequency events and can also be used for further analysis to determine trends in frequency events over time, ensuring system stability.

This dissertation focuses on the enhancement and optimization of frequency event detection algorithms. These …

Predicting Strut Geometry Of Pcl And Dmso2 Biocomposites From Nozzle To Deposition In Bio-Scaffold 3d Printing, Jae-Won Jang, Kyung-Eun Min, Jun-Hee Park, Cheolhee Kim, Sung Yi

Mechanical and Materials Engineering Faculty Publications and Presentations

The field of tissue engineering increasingly demands accurate predictive models to optimize the 3D printing process of bio-scaffolds. This study presents a unified numerical model that predicts extrusion velocity and strut diameter based on printing conditions and the material properties of polycaprolactone (PCL) and dimethyl sulfone (DMSO2) composites. The extrusion velocity was simulated using Navier–Stokes equations, while the strut diameter was calculated via a surface energy model. For PCL, the extrusion velocity showed a temperature coefficient of 23.3%/°C and a pressure coefficient of 19.1% per 100 kPa; the strut diameter exhibited a temperature coefficient of 21.6%/°C and a pressure coefficient …

Book Review Of, Participatory Engineering Of Algorithmic Socialtechnologies: An Extended Book Review Of David G. Robinson's Voices Inthe Code, Rajesh Venkatachalapathy

Complex Systems Faculty Publications and Presentations

David G. Robinson’s Voices in the Code, reviewed here, approaches the issue of governance and regulation of algorithmic social technologies with a case study orientation that offers a grounding in the details, illuminating the fundamentally sociological and processual nature of modern governance issues that are mostly missed or left implicit in academic, regulatory, and legislative discussions. This important book urges us to design adaptive, malleable, and evolvable participatory organizational structures instead. Accepting the author’s invitation to carry the torch forward, this review builds on and extends the book’s arguments by presenting broad and transferable insights on regulation and governance …

Institutions, Indigenous Peoples, And The Structure Of Power In Columbia River Basin Salmon Governance, Christopher Michael Page

Dissertations and Theses

As broad patterns of behavior influenced by norms and rules, institutions structure many aspects of modern society through coordination and the distribution of power. Due to the importance of common-pool natural resources to many aspects of society, they usually involve competition and lie at the intersection of multiple institutions. This combination of institutions, power disparities, and a competitive interest is what scholars have referred to as a "field." Fields can be complex, and the coordination among interests is generally done through a form of governance involving a wide array of laws, regulations, and actors. When at least one of these …

Deep Learning Classification Of Drainage Crossings Based On High-Resolution Dem-Derived Geomorphological Information, Michael Edidem, Bill Xu, Ruopu Li, Di Wu, Banafsheh Rekabdar, Guangxing Wang

Computer Science Faculty Publications and Presentations

High-resolution digital elevation models (HRDEMs) from LiDAR and InSAR technologies have significantly improved the accuracies of mapping hydrographic features such as river boundaries, streamlines, and waterbodies over large areas. However, drainage crossings that facilitate the passage of drainage flows beneath roads are not often represented in HRDEMs, resulting in erratic or distorted hydrographic features. At present, drainage crossing datasets are largely missing or available with variable quality. While previous studies have investigated basic convolutional neural network (CNN) models for drainage crossing characterization, it remains unclear if advanced deep learning models will improve the accuracy of drainage crossing classification. Although HRDEM-derived …

Managing Happiness In The Mexican Maquiladora Industry: A Turnover Management Challenge, Claudia M. Burgos Cruz, Reyna Virginia Barragan Quintero, Angel Contreras Cruz

Engineering and Technology Management Faculty Publications and Presentations

This study explores a turnover management case by implementing exploratory Human-Centered Design (HCD) strategies, combining a collaborative tool in a Mexican maquiladora in Tecate, Baja California. To reduce turnover, the tool was designed, prototyped, and tested to foster the emotional well-being of employees, enhance employee engagement, and promote a sense of belonging in the workplace. The company leaders and managers were trained to use the HCD prototypes, such as the Happiness Dashboard, a visual feedback system using emojis to collect data during regular shifts, and the Gemba Walks, a method for collecting information through observing and interacting with workers. Organizational …