Digital Commons Network^™

The Prophylactic Landscape: Sand And Typhoid On The Merrimack River, Laila Seewang

School of Architecture Faculty Publication and Presentations

“The first municipal water filter of the rapid sand type was built at Somerville, NJ, and thus began its wonderful history.”  By 1917 the rapid sand filter was the standard defense against typhoid epidemics in the United States.

Oak Savanna Expansion: Indigenizing Psu's Urban Landscape, Ash Herb

University Honors Theses

Since time immemorial Indigenous Peoples have resided in what is now named Portland of the Pacific Northwest in the Willamette Valley. For hundreds of years, this forested Land has been colonized, razed to stumps and covered in cement in order to build the urban landscape. Due to such destruction on a broad scale, we are experiencing the results of climate catastrophe. By finding ways to reclaim our relationship with Land and returning to Indigenous epistemologies, our urban landscape has the opportunity to shift towards restoration and prosperity. Indigenous plants have existed here, supporting humans in a reciprocal relationship, for thousands …

Lessons From The Club Homeschool Capstone: Testing, Data Discipline, And The Computer Science Curriculum, Shane Brown

University Honors Theses

This thesis looks at the CLUB Homeschool Capstone project to argue that Portland State University's Computer Science curriculum should introduce testing and data quality discipline earlier and more intentionally than it does now. As team lead of a seven-person team, I coordinated sprint planning, communicated with the sponsor, and developed custom Discourse plugins that enhanced an existing forum platform instead of creating a separate application database, as requested by the sponsor. The project's requirements document called for a formal testing plan, but our team lacked the practical experience to implement one. This gap became evident through my internships as a …

Surveys For Rare Springsnails In Southeast Oregon, 2025 With A Focus On The Donner Und Blitzen Pebblesnail (Fluminicola Insolitus), Jesse Laney

Institute for Natural Resources Publications

The Donner und Blitzen pebblesnail (Fluminicola insolitus) is a critically imperiled (G1/S1) freshwater snail historically known from a single spring, Page Springs, in the Donner und Blitzen River drainage of Harney County, Oregon. The species was petitioned for listing under the U.S. Endangered Species Act in February 2024. On January 26, 2026, the U.S. Fish and Wildlife Service published a positive 90-day finding initiating species status review (USFWS 2026).

In August 2025, the Oregon Biodiversity Information Center (ORBIC) at Portland State University, in coordination with the Nevada Division of Natural Heritage (NDNH), the U.S. Fish and Wildlife Service (USFWS), and …

Identity, Needs, And Conflict Online: Understanding Cultural Fragmentation In The Black Diaspora, Imhile Omosede Dora Akpata

Dissertations and Theses

This study examines how identity formation, intra-diaspora tensions, and social media interactions contribute to fragmentation within the Black diaspora. While existing scholarship, including work by Godfried Asante and Elizabeth Chacoko has emphasized the fluid and socially constructed nature of Black identity, less attention has been given to how these processes operate in practice across diverse diasporic groups and how they are intensified in digital environments. This research addresses this gap by analyzing how individuals negotiate Black identity, how tensions emerge within the diaspora, and how social media shapes and amplifies these dynamics.

Drawing on Social Identity Theory developed by Henri …

Impact Of Chronic Pain On The Families Of U.S. Adults, Jennifer S. De La Rosa, Katherine E. Herder, Rita D. Romero, De'sha S. Wolf, Tally M. Largent-Milnes, Mohab M. Ibrahim, Stacy S. Pigott, Greg T. Chism, Beth E. Meyerson, Julie G. Pilitsis, Multiple Additional Auhors

School of Social Work Faculty Publications and Presentations

Introduction:. Chronic pain (CP) can profoundly strain family systems, yet few population studies have explored prevalence and population dynamics of CP with high impact on families. Objectives:. Examining prevalence and phenomenological characteristics of chronic pain with high impact on the families of U.S. adults. Situating HICP-family within a tiered cascade of functional impact. Methods:. Prevalence estimated using 2023 National Health Interview Survey Data (n = 29,522) Results:. Findings are as follows: (1) the population prevalence of CP with high impact on families (high-impact chronic pain [HICP]-Family) is 4.4% among U.S. adults, 18.1% among U.S. adults with CP, and 46.3% among …

Thermal Sensitivity Of Native And Introduced Crabs: Implications For Reproductive Success, Keria Moritsugu-Vandehey

Dissertations and Theses

Temperature is a major driver of physiological and developmental processes in marine organisms, and continued climate warming is expected to affect reproduction and recruitment in estuarine species. Early life stages are often particularly sensitive to environmental stress, yet relatively little is known about how warming influences embryonic development, hatching success, and larval survival across co-occurring native and introduced crab species.

This study examined the effects of temperature on embryonic development, hatching success, and early larval survival in four estuarine crab species from the Pacific Northwest: the introduced European green crab, Carcinus maenas, and the native shore crabs Hemigrapsus nudus …

Walking The Talk For Dementia: Building Social Networks And Collaborations, Walter D. Dawson, Jenn Reed, Fernando Aguzzoli-Peres, Kate Irving, Sherril B. Gelmon

OHSU-PSU School of Public Health Faculty Publications and Presentations

Background: Dementia is one of the greatest global health challenges requiring multimodal efforts to address its impact on people and societies. Walking the Talk for Dementia (WTD) is a unique global initiative designed to challenge the stigma that surrounds dementia, foster intergenerational dialogue, build a community, and inspire a renewed sense of purpose among participants. A social network analysis (SNA) was conducted to provide greater detail and contextualization of the connections made during WTD and insights into the collaborations that arose from this immersive event which may influence dementia policy, care, and services. Methods A robust, comprehensive, and minimally intrusive …

Ƒ(Enlightenment): A Complex Adaptive Systems Model Of Recursive Causality And Human Meaning-Making, Daniel Lambert

Dissertations and Theses

Conflict Resolution has developed as a richly interdisciplinary field; however, its theoretical architecture remains fragmented across distinct bodies of scholarship. Existing approaches offer valuable but often isolated explanations of conflict behavior, limiting their ability to account for its complexity. This thesis addresses this limitation by advancing systems science as an organizing framework for integrating these perspectives. It introduces the Human-Complex Adaptive Systems (H-CAS) framework, which conceptualizes human behavior as a recursive adaptive process operating across interconnected regulatory domains. Within this model, conflict is not treated as a discrete event or purely deliberative process, but as an emergent property arising from …

Macro Social Work Education And Practice Over 1980–2024 Through Multiple Lenses: A Systematic Review Of The Empirical Literature, Bowen Mcbeath, Nguyen Thi Bich Thao

School of Social Work Faculty Publications and Presentations

Over the past 40 years, conceptual and empirical scholarship on macro social work has grown, particularly as the social work profession has turned to macro practice to respond to crises of neoliberalism and increasing social development needs. Using a systematic literature review with a sequential mixed-methods (quant→Qual) study design, we synthesize over four decades of empirical research (1980–2024) on master’s-level macro social work education, practice, and professional identity development. Our findings testify to the growth and diversity of macro practice from the perspective of social work educators, students, and alumni. Yet we find that this trend is accompanied by significant …

Trust And Signaling: An Exploratory Study Of Residential Attitudes Towards Energy Efficiency Advisors And Outdoor Media, Hal T. Nelson, Ivana Osmanovic

Public Administration Faculty Publications and Presentations

As the building sector shifts toward community-led energy efficiency (EE) initiatives to mitigate the climate crisis, scaling adoption requires understanding behavioral drivers. This study examines key drivers of EE measure adoption: perceived non-energy benefits, trusted advisors, and behavioral signaling. This research contributes to the energy policy and social science literature by empirically linking social trust with signaling preferences. It extends existing EE adoption decision theories by identifying distinct clusters of “expert” versus “close” advisors across demographic groups. Data from an experimental survey (n = 238) in Portland, Oregon, were analyzed using principal component analysis (PCA) and multivariate regression modeling. Results …

Fuel Tank Seismic Stability Program-Informed Displacement Maps Of Portland's Critical Energy Infrastructure Hub, Ana Tijerina Esquino

Dissertations and Theses

Oregon's Critical Energy Infrastructure (CEI) Hub in northwest Portland contains a large portion of the state's liquid fuel storage and distribution capacity and is located in an area susceptible to liquefaction and earthquake-induced permanent ground deformation during a Cascadia Subduction Zone earthquake. Initial Seismic Vulnerability Assessments submitted under Oregon's Fuel Tank Seismic Stability program provide valuable facility-specific information, but the assessments vary in subsurface characterization, treatment of fine-grained soils, ground motion selection, and deformation estimation methods. This variability complicates interpretation of regional seismic risk and motivates a consistent corridor-scale analysis.

This thesis develops CPT-informed displacement estimates for representative cross sections …

The Growing Needs For Young Adults’ Behavioral Health Services In Oregon And Pathways For Sustainable Service Deliveries, Anis Zaman

Hatfield Graduate Journal of Public Affairs

Recent OHA data indicate a significant surge in behavioral health cases among young adults ages 17-26 across Oregon. Every year in Oregon, the total number of young adults receiving medical treatment includes a significant number of them who have behavioral health challenges. This large group of young adults with mental health conditions is vulnerable to suicidal ideation and substance overdose. Despite sincere efforts by the Oregon Health Authority (OHA), the young adult mental health state of Oregon remains a concern. Therefore, there is a need for a comprehensive action plan for the sustainable delivery of mental health services to young …

Unspent Donations In Donor Advised Funds - Policy Recommendation, Oriel Nolan-Smith

Hatfield Graduate Journal of Public Affairs

Billions of dollars are sitting in Donor Advised Funds, delaying support for charitable organizations seemingly at odds with the intent of U.S. charitable tax policy. With no requirement for annual distribution nor timelines for disbursement, Donor Advised Funds allow individual and institutional donors to postpone directing funds to charitable organizations - despite already claiming tax benefits. As a result, some DAFs distribute less than 5% of assets annually, while many of the institutions managing the DAFs continue collecting fees.

Two complementary policy interventions are recommended: (1) the issuance of a federal regulation requiring annual minimum distributions from all DAFs, and …

Summer Proceedings 2026, Computational Modeling Serving Portland, The Altreu Program, Portland State University, Teuscher Lab, Portland State University

altREU Projects

The 2026 Summer Proceedings bring together research conducted by undergraduate students participating in three complementary programs at Portland State University: the National Science Foundation Research Experiences for Undergraduates (NSF REU) site, Computational Modeling Serving Portland; the alternative Research Experiences for Undergraduates (altREU) program, Designing, Programming, and Using Computers to Benefit Society; and the Teuscher Lab internship program.

The NSF REU is a fully virtual, 10-week program centered on computational modeling that serves Portland and the greater region. Students begin with two weeks of intensive training in computational modeling, followed by eightweeks of mentored research with faculty, research collaborators, and community …

Desert Desires And The War On Terror: Pre- And Post-9/11 Sheikh Romances, Leena Altamimi

Book Publishing Final Research Papers

The existence of sheikh romances as a subgenre has prevailed for well over a century in Western literature. Therefore, would one be able to discern whether the book cover imagery as well as the textual content showcases any tangible differences pre and post 9/11, and America’s “war on terror” campaign? A total of five books are observed: The Sheik by E.M. Hull published in 1919, Sarah Holland’s Desert Destiny published in 1991, Loreth Anne White’s The Sheik Who Loved Me and Penny Jordan’s Possessed by the Sheikh (both published in 2005), and lastly Crowned for the Sheikh’s Baby by Sharon …

Predicting Urban Heat‐Related Illness Across U.S. Climate Regions And Demographics, S. E. Brown, Vivek Shandas

Geography Faculty Publications and Presentations

We still know relatively little about how climate, demographics, built environment, and behaviors interact to drive hospitalizations during extreme heat events (EHEs). To address this paucity in understanding, we draw on extant literature to develop a transdisciplinary discrete event system dynamics (SD) modeling approach to address two research questions about the relationship between EHEs and heat‐related illnesses (HRIs): (a) How will changes in EHE frequencies, intensities, and durations in major Metropolitan Statistical Areas (MSAs) across the contiguous United States (CONUS) Climate Regions drive HRI morbidity across demographic, health‐status, and household groups over the coming decades? and (b) What are the …

Low Cost Lightning Localization At Microwave Frequencies, Bradley Glaubitz

Dissertations and Theses

High precision lightning localization is essential for atmospheric research and public safety, yet the high cost of traditional VLF/LF systems restricts high resolution detection primarily to well funded agencies. Furthermore, conventional low frequency receivers often overlook microwave frequency emissions associated with lightning leader development. This thesis proposes a compact, low cost microwave frequency localization system operating in the 1.42 GHz band to provide an accessible alternative for high resolution mapping. The methodology utilizes an ARM Cortex M0+ microcontroller and a triggered 64 MHz 32 bit counter synchronized to a GPS Pulse Per Second (PPS) signal, achieving a temporal resolution of …

Flexible Load Communication Protocol Mapping Guide: Ieee 2030.5 To Ansi/Cta-2045, Joseph D'Ambrosia

Dissertations and Theses

As more variable renewable energy resources are connected to the grid, new challenges emerge for grid operators. Demand response programs can provide an additional degree of freedom to grid operators, by modulating the patterns of electricity consumption of residential, customer-owned, flexible loads. The success of demand response programs requires robust and reliable systems of communication between grid operators and flexible loads.

The ANSI/CTA-2045 communication protocol enables customer-owned devices to act as flexible loads. The SEP 2.0/IEEE 2030.5 communication protocol is used to manage distributed energy resources, including flexible loads. Interoperability can be realized by mapping ANSI/CTA-2045 and SEP 2.0/IEEE 2030.5 …

Junk Journaling For Graphic Designers: Analog Play & Process In An Increasingly Digital Design Landscape, Kristina Rosgen

University Honors Theses

This thesis explores junk journaling as an accessible analog practice for young graphic designers experiencing digital fatigue, creative stress, and perfectionism. Through historical research, a hands-on workshop, and an interactive Readymag website, the project shows how junk journaling can help designers reconnect with play, process, physical materials, and the joy of making.

The Kashmir Conflict After The Abrogation Of Articles 370 And 35a Of The Indian Constitution: Geopolitical Dynamics And Human Security Implications, Rizwan Ali

Dissertations and Theses

The abrogation of Article 370 of the Indian Constitution on August 5, 2019, revoked the special autonomous status of Jammu and Kashmir (J&K) under the Indian administration. It further bifurcated it into two Union Territories under central Indian control. The move came amid a severe security lockdown and communication blackout that lasted for months. It was followed by instrumental legal, social, and economic developments that directly affected the area’s disputed status and the human rights of its residents. This research examines the geopolitical and human security implications of the abrogation and subsequent developments through a qualitative, analytical design, integrating Edward …

The Experiences Of College Students Facing Housing And Financial Insecurity, Nora Shaheen

University Honors Theses

Housing and financial insecurity among college students continues to be a growing crisis, yet their lived experiences are often overlooked. This thesis utilizes qualitative research to investigate the emotional, social, and academic experiences of students navigating housing and financial instability. The data was collected through semi-structured interviews with six current/former college students who have experience with housing and financial insecurities. During the analysis, recurring patterns were grouped into themes, including the triggers of instability (familial abandonment, rent increases, relationship dissolution, etc), social stigma and internalized shame, emotional and mental health costs, social isolation, survival strategies, food insecurity, work-school balance, disrupted …

(Re)Claiming Homeplace: Dance As Embodied Resistance & Healing For Health & Spatial Justice, Preeya G. Kannan

University Honors Theses

This thesis argues that dance functions as both an upstream public health intervention and a form of radical spatial resistance; creating healing, agency, and belonging among historically marginalized communities. Drawing on bell hooks' concept of homeplace, Jasbir Puar's assemblage theory, Nancy Krieger's eco-social theory, and Katherine McKittrick's Black geographies, I position the body as both an ecological and political landscape shaped by histories of colonialism, racial capitalism, displacement, and resilience.

Through this community-based participatory research study, Homeplace, I explore dance as a form of social prescription that centers liberation rather than pathology. Movement is often reduced in public health discourse …

Assessing Spatial Distribution Of Plausible Earthquake-Triggered Landslides Relative To Ca. 1000 Ybp Earthquake On The Gales Creek Fault, Jacqueline Rheingans

University Honors Theses

Modern coseismic landslides cluster near the surface trace of the fault that ruptured, suggesting that clustering of paleolandslides may record information about paleoearthquakes. This study documents the pattern of prehistoric landslides near the Gales Creek Fault (GCF), northwest Oregon, to assess whether it reflects an independently known paleoearthquake. The GCF is located northwest of Portland through the Cascadia fore-arc basin where landslides are often triggered by intense rainfall during the wet season or potentially by seismic shaking on the megathrust or on crustal faults. In order to understand how a seismic event on the GCF will impact landslide distribution I …

Strategic Anti-Transgender Policy Diffusion: Interest Groups, Courts, And The Two-Track Politics Of Gender Regulation, Henry Danford

University Honors Theses

This thesis analyzes the strategic diffusion of anti-transgender policy in the United States following the passage of Idaho House Bills 500 and 509 in 2020. It argues that conservative lawmakers and advocacy organizations employed a coordinated "two-track" policy strategy in which transgender sports bans served as highly visible and politically popular mode legislation while identity-document restrictions advanced more quietly through courts and administrative policy. Drawing on policy diffusion theory, the Advocacy Coalition framework, and minority stress theory, the study combines qualitative policy analysis with quantitative analysis of Household Pulse Survey mental health data and Media Cloud new coverage data from …

Custom Sbc Gps Tracking And Geocaching Carputer Software Development And Implementation, Joshua A. Davis

University Honors Theses

This thesis argues that hardware-integrated capstone projects develop software engineering skills that traditional coursework cannot replicate. A team of eight developers built a GPS tracking system on a Raspberry Pi 4 over two academic terms, integrating real-time position streaming, the APRS amateur radio protocol for network-independent location sharing, and PostGIS spatial queries for "new road" detection. The system implements SmartBeaconing for adaptive GPS data reduction, achieving approximately 80% storage savings while preserving route fidelity. The project exposed challenges absent from classroom assignments: hardware debugging without stack traces, cross-layer integration failures, and coordination overhead when deploying to unfamiliar architecture; demonstrating that …

Brutalism, Bad Manners, And Tech Baddies: Strengthening Women's Sense Of Belonging In Undergraduate Computer Science Spaces, Mckenzie Starr West

University Honors Theses

Through a literature review supported by reflexive vignettes, this thesis explores women's experiences in undergraduate CS programs and how physical and discursive spaces may affect their sense of belonging and shape whether they enter, remain in, or leave CS programs. I provide historical and cultural context for undergraduate CS, including the history of women in education and the continued underrepresentation of women in CS compared to many other STEM fields. Using physical and discursive spaces as a lens, I examine how classrooms, study spaces, department communications, online forums, and other CS-related environments may signal who belongs, who is valued, and …

Effects Of Changing Fire Regimes On Black Huckleberry Habitat Suitability, Emily Labarge

University Honors Theses

Black huckleberries are a significant cultural, ecological, and economic species in the Pacific Northwest. Historically, black huckleberries were tended with cultural fire by Indigenous peoples, and now also hold importance as a resource in the non-timber forest product economy. Research has begun on the impacts of climate change on suitable black huckleberry habitat and on changing fire regimes, but not in relation to each other. To address this gap, I examined the area of overlap between suitable black huckleberry habitat and fire burn probability into mid-century climate projections. I determined the current ownership entities with management jurisdiction in areas with …

Transforming Equity: A Systemic Analysis Of The Equity Model Of Social Justice Education Through The Lens Of Conflict Transformation Theory, Precious J. Golden

University Honors Theses

Current pedagogical theory and practices grounded in social justice aim to rectify systemic barriers to equity, yet despite decades of teaching through a social justice lens, social inequality and cultural division are on the rise.  "Justice," as a noun, has several meanings (Cambridge Dictionary). It can mean "judge", "law," or "fairness," and justice, no matter its meaning or its need, is achieved through methods of conflict resolution and conflict transformation. This inquiry seeks to present conflict transformation as a radical means of achieving transformative social justice, bringing voice to the voiceless and oppressed, and rectifying the contradictions in the current …

"But Oh, What Harm Those Basics Would Cause": How Journalists Can Better Interview Vulnerable Sources Utilizing An Ethic Of Care, Noah Carandanis

University Honors Theses

Traditional journalistic ethics have emphasized detachment from sources and objectivity guiding journalists' practices. In this thesis, I explore the contribution of care ethics to the field of journalistic ethics, emphasizing care in relation to interviewing vulnerable sources. I claim that the traditional objective, detached ethical status quo in journalism is insufficient in the context of reporting on mass shootings. This thesis argues that caring journalistic practices should be utilized when interviewing traumatized, vulnerable sources. In the first part, I present the issue of traditional journalistic practices through my personal experiences. I also discuss the philosophical underpinnings to journalist's objectivity criterion. …