Digital Commons Network^™

Development Of A Water Temperature Modeling Platform To Support Short- And Long-Term Water Temperature Management In Reservoir-River Systems, Michael Deas, Yung-Hsin Sun, John Degeorge, Benjamin T. Saenz, Thomas A. Evans, Scott Burdick-Yahya, Stephen Andrews, Jeff Schuyler, William Candy, Lin Zheng, Scott Wells, Multiple Additional Authors

Civil and Environmental Engineering Faculty Publications and Presentations

The U.S. Department of the Interior, Bureau of Reclamation (Reclamation) supports water temperature management for fishery species protection in downstream river reaches below Central Valley Project (CVP) reservoirs in the Sacramento, American, and Stanislaus River systems. The Water Temperature Modeling Platform (WTMP) Project was initiated to modernize and enhance modeling capabilities to predict summer–fall water temperature through reservoir cold water pool management using temperature control facilities designed for temperature management. The WTMP supports forecasts, historical analyses, and long-term planning efforts and advances previous modeling approaches by using an integrated modeling platform. This platform includes a data management system that acquires …

From Model To Behavior: Methodological Challenges In Using Fuzzy Cognitive Maps To Represent Mental Models, Catherine Elizabeth Moore

Dissertations and Theses

This dissertation examines the use of Fuzzy cognitive maps (FCMs) as representations of mental models and how these representations connect to individual behavior. Fuzzy cognitive maps (FCMs) are semi-quantitative models that encode cause-and-effect structures as directed graphs. They are frequently used to represent individuals' knowledge structures/mental models and should in theory correlate to actions and decisions of individuals; however, this correlation has yet to be explored in a systematic manner. This dissertation represents the first step in experimental research on the connection between FCMs and individual behavior. It examines two theories of how humans use mental models, one based on …

Evaluating Gains In Student Self-Efficacy In Scientific Literacy Associated With A Brief Curricular Intervention, Radhika Reddy, Olivia M. Ainsworth, Mackenzie J. Gray, Andrea Hildebrand, Jazzmine Waugh, Jennifer Lindwall, Javier Huerta, Thomas E. Keller

Biology Faculty Publications and Presentations

Undergraduate research experiences (UREs) are high-impact practices that enhance retention, motivation, and self-efficacy in science, particularly for students with limited prior exposure to scientific environments. However, many students-especially those from underrepresented or marginalized backgrounds-enter these experiences with low research self-efficacy, stemming from limited familiarity with academic language, scientific literature, and research communication. The Research Induction Curriculum (RIC) was designed to address this challenge by providing early, structured training in scientific literacy through scaffolded journal club discussions. The RIC introduces students to progressively more complex scientific articles, supports peer discussion, and builds confidence in reading, interpreting, and presenting scientific information. This …

Barriers Beyond Bars: Examining Experiences Of Students With Criminal Records, Anakin Rivera Ramirez

Dissertations and Theses

As educational opportunities, particularly prison education programs, continue to expand for incarcerated individuals, this study, which included two participants, one formerly incarcerated and one who pleaded guilty to avoid incarceration, suggests that those who plead guilty to avoid prison may enter college without the structured reintegration resources available to their incarcerated peers. While substantial research has explored the school-to-prison pipeline phenomenon in K-12 settings, fewer studies have examined its impact on students with criminal records navigating higher education. Grounded in Critical Race Theory (CRT) in education, this study seeks to understand the experiences of carceral system-impacted students of color in …

Stayin' Alive (Even Without Oxygen): Retinal Development In Austrofundulus Limnaeus, Carmen Zecilia Rodriguez

Dissertations and Theses

The vertebrate eye is one of the most metabolically active organs in the body and is particularly sensitive to environmental stressors such as oxygen deprivation. Understanding how eye development proceeds under such conditions can provide critical insights into mechanisms of cellular resilience, tissue organization, and developmental plasticity. The annual killifish Austrofundulus limnaeus represents a unique model for investigating these processes due to its remarkable tolerance to anoxia during embryogenesis. However, the wild-type form is heavily pigmented, limiting the effectiveness of traditional imaging techniques for studying eye development. This thesis characterizes eye development and anoxia resilience in both wild-type and melanin-deficient …

Influences On Suicidality And Suicide-Prevention Needs For The Autistic Community: Qualitative Insights From Multiple Perspectives, Anne V. Kirby, Kristina Feldman, Wilhelm Clark, Amber N. Darlington, Alissa Atisme, Bobbi Duncan-Ishcomer, Rachel Kripke-Ludwig, Andrea Joyce, Whitney Lee, K. Rodriguez, Zack Siddeek, Kavitha Murthi, Brooks Keeshan, Hilary Coon, Christina Nicolaidis

School of Social Work Faculty Publications and Presentations

Autistic individuals are disproportionately likely to experience suicidal thoughts, feelings, and actions. Addressing suicidality is also a high priority of autistic community members. The goal of this study was to understand broad influences on suicidality and suicide-prevention needs for the autistic community. Using a community-based participatory research approach, we conducted a reflective thematic analysis of qualitative interviews with 16 autistic adults, 8 family members, and 14 mental health providers. Themes summarizing influences on suicidality and suicide-prevention needs centered on three broad thematic concepts: (1) Pervasive negative societal attitudes and social experiences have a lasting impact on autistic people's feelings of …

Path To Parenthood For Medical Residents And Fellows: The Impact Of Leave Policies On Parent Trainees At Oregon Health And Science University, Eline Lenne, Marie Soller, Gillian Lashen, Stephanie Dukhovny, Alinda Reimer, Susanne Klawetter, Emily Carter

School of Social Work Faculty Publications and Presentations

Residents and fellows in graduate medical education (GME) programs across the USA often complete training during childbearing years, presenting challenges for pregnant and parenting trainees balancing work and family. Institutional policies must better support these trainees. Previous studies show supported trainees experience reduced burnout, better health, and improved patient outcomes.

This study assessed the experiences and unmet needs of pregnant and parenting GME trainees and presents their recommendations for improved support.

Methods: Using a sequential explanatory mixed-methods design, we examined the unmet needs and challenges of pregnant and parenting trainees, and their recommendations for improvement. We distributed a survey to …

Clinic Vs. Daily Life Gait Characteristics In Patients With Spinocerebellar Ataxia, Vrutangkumar V. Shah, Daniel Muzyka, Adam Jagodinsky, Hannah Casey, James Mcnames, Mahmoud El-Gohary, Kristen Sowalsky, Delaram Safarpour, Patricia Carlson-Kuhta, Fay B. Horak, Christopher M. Gomez

Electrical and Computer Engineering Faculty Publications and Presentations

Background:

Recent findings suggest that a single gait assessment in a clinic may not reflect everyday mobility.ObjectiveWe compared gait measures that best differentiated individuals with spinocerebellar ataxia (SCA) from age-matched healthy controls (HC) during a supervised gait test in the clinic vs. a week of unsupervised gait during daily life.

Methods: Twenty-six individuals with SCA types 1, 2, 3, and 6, and 13 (HC) wore three Opal inertial sensors (on both feet and lower back) during a 2-minute walk in the clinic and for seven days in daily life. Seventeen gait measures were analyzed to investigate the group differences using …

A New Era Of Zines: Taking Lessons From The Past To Combat Intellectual And Political Fascism, Catherine Kane

Book Publishing Final Research Papers

Zines have long functioned as a way to circumvent the traditional gatekeepers of news, art, mainstream narratives, and publishing. They are largely non-commercial, and their emphasis is to put the means of production and distribution directly into the hands of the individual. Although their roots are in DIY, proletariat culture, they are now the subject of study in museums, libraries, and higher education, and have been co-opted by big brands, media outlets, and publishing houses—the institutions they originally sought to undermine.

In their most authentic form, zines have represented free thinking and speech, while giving individuals and communities a rallying …

Proceedings Of The 33rd United States – Japan Bridge Engineering Workshop, David Y. Yang

Civil and Environmental Engineering Faculty Publications and Presentations

This report summarizes the 33rd United States–Japan Bridge Engineering Workshop, an event that convenes bridge engineers from both countries. The workshop serves as a platform to exchange innovative ideas and technologies, as well as to share crucial knowledge and lessons learned, all with the aim of advancing bridge engineering. The 33rd workshop specifically addressed transportation asset management and seismic retrofitting, two subjects of increasing importance to both the United States and Japan. The report details the workshop's discussions on topics relevant to bridge engineers.

“Migration Craziness!” Financial Turbulence And Transnational Families In Sri Lanka, Michele R. Gamburd

Anthropology Faculty Publications and Presentations

Why might three relatively well-off, middle-class, young adults from Sri Lanka chose to leave their parents and their village to emigrate to Australia and Italy? Why would these men and women give up promising careers and comfortable homes to start over elsewhere and endure the hardship of an immigrant’s deskilled and displaced life? To understand their decisions, I rely on anthropology’s holistic perspective to help me stitch together intimate details about family choices within a context of global economic structures and national politics. I have done ethnographic research in the village that I call “Naeaegama” since 1992. I have studied …

Biofluid Biomarkers Aid In Diagnosing And Developing Improved Treatments For People With Alzheimer's Disease, Jonatan A. Lopez

University Honors Theses

Dementia is a disease in which daily life is disrupted by a loss of cognitive function. Late-onset Alzheimer's disease (AD) is the most common dementia that largely begins to affect individuals in their mid 60s or older. AD was selected as the focus of this paper because it is the most common form of dementia, accounting for 50-70% of dementia cases. A typical diagnostic approach used by physicians starts with a simple clinical test, the Mini-Mental State Examination (MMSE), when cognitive decline is suspected in a patient. Then if there is enough evidence to suggest AD, a physician would order …

Approximation And Parameterized Algorithms For Covering With Disks Of Two Types Of Radii, Sayan Bandyapadhyay, Eli Mitchell

Computer Science Faculty Publications and Presentations

We study the Discrete Covering with Two Types of Radii problem motivated by its application in wireless networks. In this problem, the goal is to assign either small-range high frequency or large-range low frequency to each access point, maximizing the number of users in high-frequency regions while ensuring that each user is in the range of an access point. Unlike other weighted covering problems, our problem requires satisfying two simultaneous objectives, which calls for novel approaches that leverage the underlying geometry of the problem. In our work, we present two new algorithms: the first is a polynomial-time (2.5 + ϵ)-approximation, …

The Social And Political Identities Of Latine Republicans In The U.S., Gabriella M. Mota

Dissertations and Theses

Between the 2016 and 2024 presidential elections, support for Republican candidate Donald Trump among Latine voters increased from 29% to 42%. This rise has attracted interest given Trump's nativist rhetoric and policies that target Latine immigrants. Previous literature has examined the growing Republican partisanship among Latine Americans, focusing on the processes of assimilation and the effects of racial ideology on the partisanship of the Latine electorate. Although this research is gaining traction, the political attitudes of Latine Republicans remain understudied. This study explores how Latine Republicans manipulate ethnoracial attachments to justify their support for Donald Trump and the Republican Party. …

Hydrosocial Ocean Commons: Offshore Wind Energy In Oregon, Bryce Ashlyn Sprauer

Dissertations and Theses

The ocean has been culturally and legally conceptualized as a commons, a space of subsistence inherited by all. Enclosure or privatization creates overlapping jurisdictions of ocean space. The ocean is also the world's most significant carbon capture, absorbing billions of tons of anthropogenic carbon dioxide since the Industrial Revolution. Now, the ocean offers an additional opportunity to decarbonize energy production and reduce greenhouse gas emissions through 'new frontiers' of offshore wind technology; however, this potential is entangled within neoliberalism. Offshore wind is entering a fragmented legal landscape where the social-legal process of ocean jurisdiction remains contested. As the "new frontier" …

Free-Running Ring Oscillators For Crystal-Free Communication Systems: Design, Simulation Challenges, And Frequency Stability Improvements, Haziq Rohail

Dissertations and Theses

This thesis presents techniques for enhancing the frequency stability of ring oscillators (ROs) for crystal-free wireless communication systems. The first major contribution is a tutorial-style study of frequency stability metrics, providing clear definitions, conversions methods, and comparative analysis of commonly used figures of merit such as phase noise, Allan deviation, and jitter. The second contribution addresses the challenges of simulating phase noise in free-running ROs. Key techniques including Periodic Steady-State Noise (PNoise), Harmonic Balance Noise (HBNoise), and transient noise analysis are evaluated in terms of accuracy, convergence behavior, and simulation runtime. Based on these results, practical guidelines are offered for …

Projections Of Lightning‐Ignited Wildfire Risk In The Western United States, Dmitri A. Kalashnikov, John T. Abatzoglou, Frances V. Davenport, Zachary M. Labe, Paul C. Loikith, Danielle Touma, Deepti Singh

Geography Faculty Publications and Presentations

Cloud‐to‐ground (CG) lightning is a major source of summer wildfire ignition in the western United States (WUS). However, future projections of lightning are uncertain since lightning is not directly simulated by most global climate models. To address this issue, we use convolutional neural network (CNN)‐based parameterizations of daily June‐September CG lightning. CNN parameterizations of daily CG lightning occurrence at each grid cell use fields of three thermodynamic variables—ratio of surface Moist Static Energy (MSE) to 500 hPa saturation MSE, 700–500 hPa lapse rate, and 500 hPa relative humidity. Applying these parameterizations to the Community Earth System Model version 2 Large …

Design And Evaluation Of An Electromagnetic Band Gap Structure For Self-Interference Reduction In Mmwave Full-Duplex Systems, Adewale Kehinde Oladeinde

Dissertations and Theses

Full-duplex (FD) wireless is a new technology that allows a device to transmit and receive at the same time and on the same frequency band. It has the potential to double the capacity and spectral efficiency of a wireless link compared to the family of conventional half-duplex wireless systems. The key challenge in implementing FD wireless communication is self-interference (SI): a node's transmitting signal generates significant interference to its receiver. Several previous studies have demonstrated the potential to reduce SI and develop FD radios; however, these studies are mostly limited to sub-6 GHz systems. Previous and on-going research explored various …

Cinematic Empathy: Autistic Interpretation Of Social Cues In Narrative Film, Lux Gomez

University Honors Theses

From research and lived experience we can see a pattern of Autistic people engaging and forming connection with emotional narratives in media, despite stereotypes suggesting they lack empathy or theory of mind. This mixed-methods study sought to lay the groundwork and start preliminary investigation into how film’s structured formal elements may facilitate autistic viewers’ interpretation of social cues that typically challenge autistic-allistic (nonautistic) communication in real life. A sample of 22 participants (13 autistic, 9 allistic) viewed five film scenes depicting lying, flirting, sarcasm, exposition, and flat affect and completed a survey. Both quantitative and qualitative data were analyzed. While …

Using The Epic (Exposure, Persuasion, Identification, And Commitment) To Develop A Measure Of Student Buy-In To Laboratory Learning Goals, Elizabeth Blanche Vaughan, A. Montoya-Cowan, Jack Barbera

Chemistry Faculty Publications and Presentations

Buy-in has been described as the series of judgements students make when deciding to engage with a pedagogical practice. Buy-in to pedagogical practices is known to have a meaningful impact on students’ engagement in learning environments, making it a construct of interest for researchers and practitioners. This study develops a measure of student buy-in to faculty defined laboratory learning goals by adapting an existing measure which operationalizes the construct in terms of Exposure, Persuasion, Identification, and Commitment (EPIC). The adapted measure presented in this study, deemed the EPIC-LaG (Laboratory Goals), was developed using learning goals for general and organic chemistry …

Optimizing Boys' Motivation Over The Transition To Middle School: A Pattern-Centered Approach To Identifying Boys' Profiles Of Engagement And The Interpersonal Resources Important In Supporting Optimal Engagement Of Boys Across Sixth Grade, Brandy Anne Brennan

Dissertations and Theses

There are normative declines in student engagement during the transition to middle school, and studies indicate that these challenges may be especially problematic for boys. Given the limited empirical evidence offering ways to support boys' motivation, the main goal of this study was to understand ways we can help boys reach their full potential over the transition to middle school by examining the interpersonal resources from parents, teachers, and peers that sustain boys' optimal engagement across the first year of middle school. Using data from an existing longitudinal dataset of 191 sixth-grade boys (N = 366; 52% male) in …

Ronald E. Mcnair Scholars Program Profiles And Abstracts 2025, Mcnair Scholars Program

McNair Symposium

This publication provides research abstracts and biographies of 2025 McNair scholars and their mentors.

Trauma-Born Generations And Intergenerational Conflict: A Study Of Tensions In The Contemporary South Korean, Daihyun Kim

Dissertations and Theses

This paper analyzes how traumatic events that have been repeated in modern Korean history have affected each generation's identity and emotional structure, and how intergenerational conflicts arise, are structured, and reproduced. This study divides the groups of people born in the period from "The Liberation" in 1945 to 2025 into four generations: the Industrialization Generation, the Democratization Generation, the Capitalist Generation, and the Isolation Generation. Each generation has remembered major historical events such as the Korean War, the Gwangju Democratization Movement, the IMF foreign exchange crisis, the Sewol ferry and the Itaewon disaster in a unique way, thereby forming an …

Voice As A Biomarker: Exploratory Analysis For Benign And Malignant Vocal Fold Lesions, Phillip Jenkins, Rylan Harrison, Steven Bedrick, Lisa Karstens, Bridge2ai-Voice Consortium

Mathematics and Statistics Faculty Publications and Presentations

Benign and malignant vocal fold lesions can alter voice quality and lead to significant morbidity or, in the case of malignancy, mortality. Early, noninvasive identification of these lesions using voice as a biomarker may improve diagnostic access and outcomes. In this study, we analyzed data from the initial release of the Bridge2AI-Voice dataset to evaluate which acoustic features best distinguish laryngeal cancer and benign vocal fold lesions from other vocal pathologies and healthy voice function. Seven diagnostic cohorts were grouped into two analyses: the first included participants with laryngeal cancer, benign lesions, or no voice disorder; the second included those …

Business Capstone Review: Analysis Of A Portland Based Chili Oil Company, Karlene Marrero

University Honors Theses

The paper is a review of the Portland State University's school of business senior capstone project. The team in this paper worked with a Portland based chili oil company for their project. There will first be an introduction to the capstone project then the paper will dive into two main sections that include a discussion of the capstone project experience and a reflection.

The First Thirty Years Of Green Stormwater Infrastructure In Portland, Oregon, Michaela Koucka, Cara Poor, Jordyn Wolfand, Heejun Chang, Vivek Shandas, Adrienne Aiona, Henry Stevens, Tim Kurtz, Svetlana Hedin, Steve Fancher, Joshua Lighthipe, Adam Zucker

Geography Faculty Publications and Presentations

Over the past 30 years, the City of Portland, Oregon, USA, has emerged as a national leader in green stormwater infrastructure (GSI). The initial impetus for implementing sustainable stormwater infrastructure in Portland stemmed from concerns about flooding and water quality in the city’s two major rivers, the Columbia and the Willamette. Heavy rainfall often led to combined sewer overflows, significantly polluting these waterways. A partial solution was the construction of “The Big Pipe” project, a large-scale stormwater containment system designed to filter and regulate overflow. However, Portland has taken a more comprehensive and long-term approach by integrating sustainable stormwater management …

More Than A Ramp: Rethinking School Design For Sensory And Cognitive Inclusion, Andrew Ho

University Honors Theses

This thesis advocates for the integration of the ASPECTSS framework, developed by Magda Mostafa, into legislative standards that would govern the design of educational environments that accommodate students with Autism Spectrum Disorder (ASD). Drawing on evidence from a case study demonstrating significant improvements in student behavior and overall satisfaction through ASPECTSS-based interventions, the thesis highlights the urgent need for these principles to move beyond voluntary adoption and rather, toward enforceable design mandates.

The ASPECTSS framework includes the seven following criterias; Acoustics, Spatial Sequencing, Escape Spaces, Compartmentalization, Transitions, Sensory Zoning, and Safety. This model provides a comprehensive and actionable approach to …

We Who Are Not Cared For: Social Death, The Lie Of Educational Equity, And A Radical Replanting Praxis, Chantell Wesley

University Honors Theses

This thesis examines how the concept of social death, as theorized by Orlando Patterson and expanded by Frank B. Wilderson III and Christina Sharpe, can serve as a transformative foundation for culturally informed care practices within academic institutions. Arguing that traditional equity efforts and even critical race interventions often fall short by focusing on reform within inherently anti-Black systems, I propose a new framework: Radical Replanting Praxis. Using the metaphor of education as a tree, this praxis calls for a shift in attention from reforming institutional "roots" to transforming the "soil"--the relational, ideological, and everyday conditions in which …

Emergence Of Norms In The Presence Of Social Network Structure In A Stochastic Evolutionary Game Theory Model, Parker Foresman

Dissertations and Theses

In their 2000 paper, The Emergence of Classes in a Multi-Agent Bargaining Model, Axtell, Epstein, and Young introduced an agent-based bargaining model to study how social norms can emerge and persist from the decentralized, asynchronous interactions of individual agents in the presence of noise, even when these agents have no predefined preferences or advantages. This thesis extends their model by incorporating structured interaction networks, allowing us to investigate how the topology of agent interactions influences long-run dynamics and norm formation. Using a custom simulation package built in the Julia programming language, we replicate the original results under a complete …

Convergence Research For Sustainable Regional Systems, Heejun Chang, Brian Roe, Murat Erkoc, Josiah Heyman, Katherine Foo, Debankur Sanyal, Debjyoti Banerjee, Richard Rushforth, Jaishri Srinivasan

Geography Faculty Publications and Presentations

Summary:

Convergence research addresses societal and environmental challenges by co-creating knowledge across disciplinary boundaries, often in deep collaboration with extra-academic parties to ensure that the research process is solution-focused, actionable, and just. As part of National Science Foundation (NSF)-funded research projects on sustainable regional systems, we present multiple perspectives on conducting convergence research within the coupled social-ecological-technological systems framework. These projects explicitly engage extra-academic parties to co-design and co-produce knowledge throughout all stages of this participatory research. We introduce the 3 C’s model as a framework that links a research team’s Communication, Collaboration, and Creation decisions to the likely degree …