Digital Commons Network^™

Process Development Of C63000 Nickel Aluminum Bronze For Cold Spray, Trent Lamont

Dissertations and Theses

Nickel-aluminum bronze (NAB) is widely used for maritime components but is traditionally limited to casting due to its complex microstructure. Fine β′ phase formation in NAB is governed by the solid-state transformation of the high-temperature β phase during cooling. This ordered martensitic β′ forms via diffusionless transformation, contributing to brittleness. Conventional metal additive manufacturing (AM) techniques, such as Laser Powder Bed Fusion and Directed Energy Deposition, experience high in-process cooling rates that promote fine β′ formation, compromising mechanical performance. Powder production similarly suffers from β′ formation, often requiring additional processing. Cold Mechanically Derived (CMD) powders, produced from wrought feedstocks, retain …

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 …

Beyond The Best Prompt: A Coverage View Of Multilingual Reasoning, Harshiv Mistry

University Honors Theses

Multilingual LLMs reason more accurately in English than in other languages, and recent work links part of this gap to reasoning behavior: native-language traces contain fewer cognitive behaviors (verification, backtracking, subgoal setting, backward chaining) that support effective problem solving. We test whether prompting for these behaviors at inference time narrows the gap, across seven conditions varying chain-of-thought, instruction and reasoning language, and cognitive-behavior descriptions, on two models, three languages. We find that English-scaffolded reasoning is the strongest single strategy on both models, closing the Hindi gap on Qwen, though the explicit scaffold's value over plain chain-of-thought is model-dependent. Beyond aggregate …

Jalzap: An Agile Hybrid For Ai-Accelerated Software Development, Pouya Nouri

University Honors Theses

The rapid adoption of generative AI tools allows software teams to quickly code applications, but it comes at a cost: high scope volatility, technical debt, and unrealistic expectations, which break traditional Agile frameworks. This thesis introduces JALZAP, a lightweight, hybrid Agile framework designed to serve small, high-agility teams facing compressed timelines and unpredictable schedules. This framework was evaluated over 16 weeks through a Portland State University Capstone project working for a pre-seed startup sponsor, where a six-person team built Flowmind: an AI-powered iOS task management app meant to serve users with neurodevelopmental disorders like ADD/ADHD. JALZAP implements structural boundaries, including …

Effects Of Fine Sediment On The Productivity Of Stream Ecosystems In The Pacific Northwest, Veena I. Davis

University Honors Theses

Salmon are important to the culture, ecosystem and economy of the Pacific Northwest. However, populations have declined significantly since European colonization. Salmon require specific conditions for each life stage and are highly sensitive to environmental stressors. Excess fine sediment is a leading form of pollution as it degrades salmon spawning habitat and the benthos upon which their main food source, stream insects, live. To evaluate the effect of sediment pollution on food availability for salmon smolt, we conducted an experiment  estimating the amount of stream insect biomass and calories lost due to sediment pollution. We counted insects on substrate samples …

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 …

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 …

Adaptive Design Strategies For A Dual-Shaft Pvc Shredder, Gavin Balderas

University Honors Theses

This capstone project involved the design and development of a mid-size plastic shredder, created to process strong, ductile PVC sheets up to ½" thick. This application falls between the capabilities of consumer grade plastic shredders and heavy-duty industrial machines. Over 400 million tons of plastic produced annually and less than 10% of it is recycled; there is an ever-growing need for plastic recycling accessibility and infrastructure. This project aimed to create a compact dual-shaft shredder that can shred thick PVC sheets while being powered by a 120V outlet. Research into blade geometry and orientations aided an iterative design process driven …

Rapid-Prototyping Nanofabrication: Lcd-Based Projection Lithography And Physical Vapor Deposition, Sabeel Saleem Mohammmed

University Honors Theses

The semiconductor industry's continued growth, driven in large part by demand for artificial intelligence hardware, has highlighted the need for greater workforce development in regions adjacent to major fabrication centers like Oregon's Silicon Forest. This capstone project lays the groundwork for a small scale and student led semiconductor fabrication lab at Portland State University by demonstrating two of the core steps in chip manufacturing: photolithography and thin film deposition. Rather than relying on conventional fixed reticles, this work explores a unique, low cost approach to patterning that uses an ultraviolet-compatible liquid crystal display (LCD) as a programmable reticle, allowing arbitrary …

Universal Communications Module: Converting Ieee2030.5 Xml Files To Ansi/Cta-2045, Wyatt Bilodeaux

University Honors Theses

The goal of this thesis is to discuss the method and organization of the Universal Communication module capstone project. This project was part of the Portland State University Electrical engineering degree program. While this thesis is part of the University honors curriculum. This thesis goes into detail about team structure and how a 9 person engineering capstone project was managed and organized. It looks at how we broke down the project into sections to be able to properly distribute our resources. This was one of the earliest and most important challenges that this capstone team had to tackle. This was …

Projected Climate Change Impacts On Soil Greenhouse Gas Emissions From A Restored Freshwater Marsh, Annika Hendrickson

University Honors Theses

Wetlands provide valuable ecosystem services, one of which is a wetlands ability to sequester carbon. Climate change and human land use threaten a wetlands ability to do so. Globally, 21% of wetlands have been lost since the 1700s. As a result, restoration of wetlands has been increasing. However, wetlands in the process of restoration emit more methane than degraded ones, and as the climate continues to change, these fluxes could respond. Projected sea level rise is expected to cause salt water to infiltrate coastal freshwater systems, increasing the salinity. Past research has found that increased salinity has led to suppressed …

Methylglyoxal And Glyoxal In High-Puff Disposable Electronic Cigarette Liquids: Unexpected Accumulation And Enhanced Cytotoxicity, Esther E. Omaiye, Wentai Luo, Kevin J. Mcwhirter, Man Wong, Prue Talbot

Civil and Environmental Engineering Faculty Publications and Presentations

Despite concerns regarding the potential health risks associated with EC use, their design, puff count, and e-liquid formulations have continued to evolve. Aldehydes are a key class of thermal degradation byproducts generated during the vaporization of EC fluids. This study tested the hypothesis that aldehyde concentrations would be elevated in used ECs with high puff numbers. Devices from multiple brands were analyzed to assess the impact of extended use on aldehyde formation. E-fluids were extracted from field-collected and user-donated devices and analyzed using gas chromatography/mass spectrometry to quantify 178 flavor chemicals, two synthetic coolants, nicotine, solvents, and aldehydes (methylglyoxal (MGO), …

Adopting Critical Power Grid Infrastructure Technologies: An Organizational Cybersecurity Assessment Against Ransomware, Fayez Alsoubaie

Dissertations and Theses

For many years, researchers and practitioners have studied emerging technologies in field of energy production and distribution. Power grid systems carry major weights in the energy branch of the economy. Researchers and scientists have been interested in finding ways to connect the power grid gap and improve protection for its technologies.

The research supports organizational adoption and prioritization of critical cybersecurity technologies for ransomware protection in power grid infrastructure. As utilities increasingly integrate digital technologies, they become more vulnerable to sophisticated cyberattacks that can disrupt services and put public safety at risk. The main focus of the study is to …

How Do Us States Define Person-Centered And Family-Involved Care In Assisted Living Regulations, Paula Carder, Lindsey Smith, Jennifer N. Bunker, Cassandra L. Hua, Erh-Chi Hsu, Isabelle Boun, Olivia M. Ainsworth, Kali S. Thomas, Eric Jutkowitz

Institute on Aging Publications

Introduction: A large share of assisted living (AL) residents have a diagnosis of dementia or cognitive impairment, and these individuals can benefit from person-centered care and family-involved care. This study examines whether and how states’ AL licenses address these topics.MethodsThis research analyzed a national database of 249 unique licensing requirements that govern 35,602 ALs in all states and associated regulations, including those that govern memory care (MC) services. We reviewed each regulation for the presence of person-centered or family involved care and then used content analysis of license requirements with at least one relevant policy to identify key categories and …

The Method Of Periodic Averaging Applied To Reduced Coupled Mode Theory Models For Fiber Laser Amplifiers, Rebecca Nicole Bryant

Dissertations and Theses

Fiber laser amplifier (FLA) models are often implemented without rigorous mathematical justification or thorough numerical validation. Without a proper theoretical basis for assumptions and approximations, or a technical analysis of model performance, there is significant uncertainty about the limitations of any given reduced model and its suitability for an application. This research aims to address the lack of comprehensive assessment of FLA models by directly comparing distinct models and recommending a mathematical alternative to replace heuristic model-reduction techniques. The work in this dissertation is divided into two projects: a comparative study that uses existing FLA models to assess the validity …

Assessment Of The Readiness Of Architectural Design Companies To Adopt Eco-Friendly Nanotechnologies In Sustainable Building Design, Ashwaq Essa Al Khalil

Dissertations and Theses

Nanotechnology is emerging as a promising innovation in sustainable architectural design, although its adoption remains slow. Research highlights the advantages of incorporating nanotechnologies in architecture, including improved material performance, enhanced thermal efficiency, reduced energy consumption, improved durability, and progress toward the Sustainable Development Goals (SDGs). These advantages make nanomaterials a promising solution for sustainable building design, particularly in hot-climate regions where energy consumption and carbon emissions associated with conventional building design practices remain major concerns.

Despite this potential, nanotechnology adoption in architecture faces several challenges, including limited real-world applications, slow diffusion in practice, and persistent organizational, economic, and regulatory barriers. …

Acceptance Of Shared Autonomous Vehicles: Exploring The Attitudes And Perspectives Of Older Adults, Sara Sohaee Urbina

Dissertations and Theses

The fast development of autonomous vehicle systems will create major changes in how people move around. Previous research shows that these technologies can benefit older people who struggle with mobility, safety and access to transportation. Shared Autonomous Vehicles (SAVs) enable older people to achieve self-reliance while obtaining essential services which enhance their quality of living. The successful deployment of SAVs requires users to accept this new technology which they must also be willing to use. This research study investigates which elements affect older adults to adopt SAVs by using an extended Technology Acceptance Model (TAM) framework.

The research design of …

Foundations' Deep, Emily Williams, Morgan Williams

University Honors Theses

Most historic buildings do not survive as they were built, yet preservation frameworks still tend to evaluate them as if they did.

Foundations' Deep begins with a structure located in Helena, Montana 59602, a building that sits uneasily within the categories it has been asked to meet. Built in the early twentieth century, it has persisted through alteration, abandonment, and use. What remains is not a stable artifact but a record of accumulated decisions, some careful and many indifferent, now embedded in the fabric of the building itself.

The thesis grows from this condition and from the limits of the …

Group Operations For Concurrent Binary Search Trees, Theodora R. Cooper

Dissertations and Theses

A group operation performs multiple independent instances of the same operation on a data structure. For example, a group operation might look up 10 different keys in a binary search tree, returning 10 results. Chen et al introduced group prefetching, an optimization for group operations on linked data structures that improves throughput by overlapping memory access latencies for independent traversals. Constructing code that maximizes this throughput benefit by fully leveraging the instruction- and memory-level parallelism available on modern hardware is challenging because of overhead, interactions with the cache hierarchy, and other factors.

To address these challenges, we present two new …

Expanding Transmobilities: Understanding Genderdiverse And Transgender Travel Behavior Through An Art-Informed Methodology, Nicholas Michael Puczkowskyj

Dissertations and Theses

Transgender and genderdiverse people face discrimination and harassment in public when making trips in Portland, OR. People who identify as genderdiverse or transgender create unique travel behavior due to the influence of their internalized and expressed gender identity and through interactions in public. This dissertation examines how gender identity influences the travel behavior of genderdiverse and transgender people and how these experiences influence their subjective wellbeing when making trips in Portland, Oregon. Traditional one-on-one interviews were conducted in conjunction with allowing the interviewees to produce art as a non-verbal form of expression and communication of their experiences making trips in …

Growing Pains: The Loss Of Plasticity To Extreme Anoxia In Developing Embryos Of Austrofundulus Limnaeus, Patrick Ryan Clouser

Dissertations and Theses

Oxygen plays a pivotal role for most animal life on Earth, so much so that even short exposures to no oxygen, anoxia, can have severe effects on the animal's wellbeing. Conversely, aerobic recovery after anoxic insult can be just as detrimental. Some animals are the exception to this rule and demonstrate survival through anoxia and recovery. There has been a great deal of research around anoxia tolerant animals, but what remains unclear are the genetic underpinnings that determine the anoxia tolerant phenotype. RNA sequencing allows for the quantification of RNA transcripts within a sample, which can indicate if a gene …

Disaster Justice: Queer And Disabled Mobilities And Infrastructures Of Care In The Pacific Northwest, Rachel Springer

Dissertations and Theses

This dissertation examines the social, political, and environmental pressures that drive LGBTQ+ migration to the Pacific Northwest and the social infrastructures people find on arrival. Drawing on thirty-four semi-structured interviews with LGBTQ+ adults who relocated between 2022 and 2025, it argues that these movements are best understood as responses to slow-onset disasters produced by the compounding interaction of legislative targeting and infrastructural violence.

State-level legislation targeting LGBTQ+ people—particularly transgender individuals—has fractured the geography of safety in the U.S., producing a landscape where civil rights, healthcare access, and everyday security vary dramatically across space. For those navigating these conditions at the …

Exploring Information Literacy Skills, Attitudes, And Barriers Among Medical And Nursing Students In Bahrain: A Mixed-Methods Perspective, Asif Altaf, Suchita N. Dsilva, Simple Sibi Joseph, Fida Mukhtar, Muhammad Zeeshan, Bindhu Nair

Communications in Information Literacy

Information literacy is essential for evidence-based medical education, yet Gulf-region studies rarely examine student competencies and barriers. This study examines the information literacy skills, attitudes, and challenges faced by medical and nursing students at RCSI Bahrain. A mixed-methods design was employed, combining a quantitative survey (n = 343) with qualitative focus groups (n = 10). Students reported high self-perceived information literacy across domains. Time constraints and information overload were identified as the primary barriers to effective communication. Focus group findings highlighted the late introduction of curricula, technical access challenges, and inequities between medical and nursing programs. Library training attendance, academic …

Oregon Metro’S Regional Land Banking Site Selection Strategy, Margot Mcneely, Autumn Fluetsch, David Archuleta, Denise Torres, Dylan Giliberto, Rebekah Markillie

Master of Urban and Regional Planning Workshop Projects

Project Background

For over a decade, communities in the Portland metro area have been struggling under a mounting housing affordability crisis. These trends particularly affect Black, Indigenous, and other people of color as well as immigrants, seniors, veterans, and people with disabilities. Given these mounting challenges, the region has turned to Oregon Metro to intervene.

Metro is currently studying land banking as a tool for implementing its Regional Housing Coordination Strategy and promoting affordable housing development in the Portland metro region. While they have acquired numerous sites that have been successfully developed into affordable housing, they are looking to improve …

Rooted In Hillsboro: An Urban Tree Protection Project, Leandre Mills, Aidan Mcclinton, Aria Shopbell, Karl Coppock, Wally Mcallister

Master of Urban and Regional Planning Workshop Projects

The Canopi team and the City of Hillsboro Urban Forestry Program completed this project to evaluate and strengthen municipal tree protection policies. Current regulations rely heavily on tree replacement rather than retention, contributing to loss of mature canopy and reduced climate, infrastructure, and equity benefits. In many cases, mature trees removed during development or infrastructure projects are replaced with small-caliper plantings that do not provide equivalent environmental or community value for decades.

As Hillsboro grows, the city faces increasing climate pressures, including urban heat island effects, stormwater impacts, invasive pests, and uneven canopy distribution across historically underserved neighborhoods. These challenges …

Application Of Information Literacy Skills To Everyday Life Information Seeking In College Students: Implications For Instruction, Stephanie Ward, Rachel Dineen, Darren Ilett

Communications in Information Literacy

Academic librarians who teach information literacy (IL) skills hope students will transfer those skills to their information seeking in everyday life. However, there is little evidence that students are transferring what they learn about research to their lives outside college. This study aims to find out what search and evaluation strategies college students who have had IL instruction apply to their own personal information seeking behaviors. To do this, a talk-aloud protocol was used to record participants’ thoughts and actions as they navigated scenarios that required them to select a source that met a non-academic information need. The findings indicate …

Developing A High-Resolution Off-Axis Common-Mode Digital Holographic Microscope, Lucy Cook

University Honors Theses

Off-axis digital holographic microscopy (DHM) is a powerful tool for 3D, non-invasive live-cell tracking without moving parts. However, traditional setups face an inherent dilemma: split-path interferometers offer high spatial resolution but poor temporal stability, while more stable common-mode configurations are historically limited to lower numerical aperture (NA) regimes. This thesis bridges that gap by scaling a common-mode DHM architecture into a high-resolution benchtop instrument featuring NA = 0.65 objectives, paired with a high-power 520 nm laser source to combat transmission losses and sustain imaging frame rates across an expanded optical footprint. We map the multi-variable design space required to satisfy …

The Social Construction Of Risk: How Media Socially Constructs Risk Perceptions Surrounding School Shootings Among College Students, Natalie Jobe

University Honors Theses

Although school shootings are statistically rare events, public fear surrounding them has continuously increased across the United States. This thesis explored how college students perceive the risk of school shootings despite the relatively low probability of experiencing these violent events, with particular attention to the role of media framing, sensationalized reporting, and repeated exposure to violent social and digital media. In order to examine how media framing, social and digital media exposure, as well as ongoing encounters with violent content affect risk perception, this research conducted six interviews with traditionally aged college students from Portland State University regarding their experiences …

Conello Vendor Marketplace Capstone: A Review On The Capstone Process And Computer Science Degree, Levi Hauck

University Honors Theses

This Capstone Review Thesis discusses the current structure of the Computer Science Degree path and Computer Science Capstone at PSU. This thesis reviews the Conello Vendor Marketplace Capstone, a project designed to help address the issue of teambuilding in the workplace. It points out ways in which teamwork and organization is an underdeveloped skill in Computer Science. During the Capstone project, the project management method of Agile development was recommended and used. However, it became clear that the team, leader included, had a gap in knowledge and skills to be successful, as well as a lack of experience in team …