Digital Commons Network^™

Student Perceptions: How Stem Students Value Belonging Interventions, Elizabeth Runkel Baez

University Honors Theses

With the prioritization of increasing Science, Technology, Engineering, and Mathematics (STEM) graduates in the United States, researchers have become increasingly interested in how to promote STEM students' sense of belonging. Sense of belonging is considered a marker of persistence in STEM. Facilitated 'belonging interventions' are one way to strengthen a sense of belonging amongst STEM students. How students respond to, value, and understand these belonging interventions is relatively understudied. In this study, focus groups were conducted with STEM students from a single university to investigate how they value an in-class belonging activity. Qualitative thematic coding of focus group responses revealed …

Piloting A Drain Gauge As A Method Of Measuring Runoff From Ecoroofs In Portland, Trinity Perrin

University Honors Theses

The following paper will be exploring a pilot methodology of a drain gauge system I built that’s used to calculate stormwater runoff from ecoroofs in Portland, Oregon. The drain gauge is a less studied technique for measuring ecoroof runoff, but holds high potential for developing better monitoring and management of ecoroofs within the city of Portland. What separates this stormwater runoff capturing device apart from other stormwater runoff calculation techniques is its adaptable design and simple installation. The drain weir can be placed in any roof drain that an ecoroof has been installed simply by placing it into a roof …

Attrition And Assimilation: The Neural Mechanisms Of Mandarin-English Bilingualism, Natalie Paige Robison

University Honors Theses

This line of research investigates attrition of native language (L1) Mandarin proficiency with increasing proficiency in English. English uses pitch to denote intonation (e.g., "it's there?" versus "it's there!"), while Mandarin additionally uses pitch to indicate word meanings; e.g., /he/ means "drink" when spoken with a high, level tone, or "river" when spoken with a rising tone. The present study delineates between two alternative explanations for the prior finding that English proficiency correlates with attrition of Mandarin tones, but not Mandarin vowels. This pattern could be explained by 1) assimilability of the Mandarin vowel contrasts used in the study into …

Differentiating Dynamic System Outcomes In Cam Photosynthesis Through Sonification, Duncan Turley

Civil and Environmental Engineering Undergraduate Honors Theses

Sonification is a powerful tool that is harnessed by modern engineers to represent information through audio, and is beginning to be used to interpret more complex data sets. Sonification can be used to facilitate the listeners' ability to grasp microscopic or complex changes in the state of a system. This study uses the assigning of sound patterns to model outputs that indicate chaotic or non-chaotic systems in Crassulacean acid metabolism photosynthesis. Using sound allows the interpretation of chaotic data without the more time intensive processes typically used, such as of Fast Fourier Transformations. Based on past research, it is known …

Cards With Class: Formalizing A Simplified Collectible Card Game, Dan Ha

University Honors Theses

Collectible card games (CCGs) have been a wildly popular game genre since the release of Wizards of the Coast's Magic: The Gathering. These games revolve around their thousands of cards and the hundreds of thousands of interactions they can create with their many effects. For designers, it is an incredibly demanding task to ensure that every single card works properly and that each card's text unambiguously conveys its intended behavior in all cases. The task only grows more difficult over time as the number of cards in the game grows and card effects become more complex or experimental. If the …

The Institutional Challenges Of A Quantified Self Study: An Attempt To Ascertain How Data Collected From A Mobile Device Can Be An Indicator Of Personal Mental Health Over Time, Julian Lazaras

University Honors Theses

The adoption of an application of new technology always comes with a bias, this is never more true for the case of human behavioral analytics within higher education. While movements such as the quantified self movement make strides to reinterpret the realm of data analytics, psychology, and computer science, there are inevitably limitations to the adoption and application of such approaches within the standard realm of research. Herein is presented a case where an effort to evaluate the prospect of use of mobile phone data as secondary indicators of personal mental health through the lens of data analysis was put …

Technologies For Wearable Seizure Detection: A Systematic Review, Rhema Losli

University Honors Theses

Knowing when a seizure occurred is helpful because this information can be used to evaluate the effectiveness of seizure interventions and possibly alert caregivers to emergency situations. The current practice for recording seizures outside of a hospital and without sensors is through keeping a self-reported seizure diary. This practice may be unreliable if the diary is not updated or the person having the seizure does not realize it is happening. Wearable seizure detectors aim to solve this problem by reliably recording when a seizure happened and either sending out an alert or storing the data for later analysis. In this …

Preservation Of Biomass In Underground Capsules Using An Open-Source Wireless Water Activity Sensor System: Capstone Review, Joshua Varughese

University Honors Theses

This paper highlights the progression of a two-term senior capstone project in the ECE department at Portland State University. Sponsored by Dr. David Burnett from PSU's WEST Lab, the project aims to produce an affordable wireless monitoring system for water activity. The example scenario focuses on carbon sequestration where wood biomass is buried underground in enclosed capsules. For optimal sequestration, microorganisms capable of decaying the wood and releasing carbon back into the environment must be eliminated. Water activity, a key metric for measuring microbial activity, must be below 0.61 to prevent microbial survival. The system this project was designed for …

A Marxist Analysis Of Women's Labor In The Soviet Union, Shania Sweet

University Honors Theses

This thesis examines the evolution of Soviet women's labor and labor laws through a Marxist lens, emphasizing the contributions of Karl Marx, Friedrich Engels, and Vladimir Lenin. It explores the ideological foundations of communism concerning gender equality and the legislative measures taken by the Soviet Union to emancipate women from traditional capitalist oppression. The analysis reveals significant advancements in women's rights, such as legal equality and protection in the workforce, yet highlights the inconsistencies and challenges, particularly under Stalin's regime, where ideological shifts and practical enforcement diverged from Marxist principles. The research utilizes historical documents, legislative texts, and scholarly analyses …

Mapping Mental Models Through An Improved Method For Identifying Causal Structures In Qualitative Data, Erin S. Kenzie, Wayne Wakeland, Antonie Jetter, Kristen Hassmiller Lich, Mellodie Seater, Melinda M. Davis

Complex Systems Faculty Publications and Presentations

Qualitative data are commonly used in the development of system dynamicsmodels, but methods for systematically identifying causal structures in qualita-tive data have not been widely established. This article presents a modifiedprocess for identifying causal structures (e.g., feedback loops) that are commu-nicated implicitly or explicitly and utilizes software to make coding, tracking,and model rendering more efficient. This approach draws from existingmethods, system dynamics best practice, and qualitative data analysis tech-niques. Steps of this method are presented along with a description of causalstructures for an audience new to system dynamics. The method is applied to aset of interviews describing mental models of …

Publication Bias In The Output Of Generative Ai, Esperanza Y. Rodriguez Rodriguez

University Honors Theses

Throughout this study it became apparent that Generative artificial intelligence lacks the ability to identify publication bias and is not always able to grasp the central message, despite several attempts and methods seeking to correct such publication bias. Due to the training of AI which consists of consuming information from the internet and providing information by predictive algorithm methods the presence of bias was expected. The goal then was to investigate if generative AI, using ChatGPT as our tool, could correct its outputs based on inputs provided. The subject matter focused on research conducted in our laboratory, gadolinium based contrast …

Artificial Intelligence As The Next Front In The Class War, Christopher Hill

Dissertations and Theses

For many years, artificial intelligence has been confined to the realm of science fiction, and while the technology has been in development, predicting the effects AI will have on our society has been a challenging endeavor. The release of ChatGPT in 2022, the subsequent mass adoption of the AI chatbot, and the response by other private firms in the field announced AI's permanent entrance into the public sphere. These recent strides made in the field of artificial intelligence reveal that the pace of technological development has outstripped the rate at which we are able to politically examine and understand these …

Undergraduate Students Of Color Raising Children And Persisting In Higher Education, Kimberly Denise Alvarez

Dissertations and Theses

Millions of undergraduate students have been identified as parents across the United States. Of those millions, a majority have been identified as undergraduate students of Color who are pregnant, parenting, frequently underrepresented, and often not equitably supported toward degree completion. The purpose of the qualitative single-site case study was to learn what undergraduate students of Color who are parenting have experienced, in terms of support for their continued enrollment, while earning baccalaureate degrees at Portland State University. Through an asset-based approach, this study elaborated on three key findings which include the persistent aspirations of undergraduate Students of Color (USPs of …

The Bonneville Power Administration In A Transformative Decade: A Study Of Collibration In Public Administration, Christopher M. Frost

Dissertations and Theses

In 1987, the Bonneville Power Administration (BPA) celebrated its 50th year as a federal agency. It was created in 1937 to market power produced by federal dam operations on the Columbia River and provide electric transmission service in the Pacific Northwest region. A decade later, while its organizational mission had largely remained the same, BPA had undergone a major transformation both in its governance role with regional partners and as an institution of the Pacific Northwest. This study seeks to understand how this change occurred.

My research identifies three factors that enabled BPA to successfully respond to external challenges to …

Effects Of Exogenous And Endogenous Variables On Efficiency And Productivity: Case Of Indian Banks, Aurobindh Kalathil Puthanpura

Dissertations and Theses

Financial intermediation is the process by which financial intermediaries facilitate the flow of funds between depositors and creditors. Financial intermediation is critical in facilitating economic growth and fostering technological innovation. An effective and robust financial intermediation is key for a well functioning financial sector and the overall economy. So, it is vital to study the efficiency and productivity of the financial sector to discover any inefficiencies in the intermediation process and to implement robust policies to improve efficiency.

Researchers have examined the banking sector's efficiency and productivity using parametric and non-parametric methods, incorporating diverse inputs and outputs. However, there is …

Yang-Baxter Equations, David Lovitz

Dissertations and Theses

Multiple equations in math, physics, quantum information, and elsewhere are referred to as "the" Yang-Baxter equation, in spite of being a broad family of equations. Most of the equations are nonlinear matrix equations, where the unknown variable is a matrix. This is the case for the so called braided, algebraic, and generalized forms of "the" equation, which are the primary focus of this dissertation. Finding solutions to the various forms of these equations has been the subject of much research. The equations in all their forms are largely considered intractable in high dimensions, and only in dimension 2 have the …

Social Reproduction On Campus: Quantitative Investigations Into The Reproduction Of Gender And Socioeconomic Inequality Through Higher Education, Ned William Tilbrook

Dissertations and Theses

This dissertation examines two key axes of inequality in higher education -- gender and socioeconomic status (SES) -- in terms of differences in college persistence and college major using the nationally-representative High School Longitudinal Study of 2009. While gender differences in terms of STEM majors has been oft-studied, this dissertation contributes to this body of literature by advancing Health & Social Sciences (HSS) majors as a separate category and examining the ways in which men and women may be sorted into these different types of major before and during college, despite the strong overlap in science and math related content. …

Embodying Whole Community Preparedness: A Case Study Of Student-Facing Preparedness Initiatives At Institutions Of Higher Education In The State Of Oregon, Francis Pastorelle

Dissertations and Theses

Over the last two decades, there has been a dramatic increase in natural and manmade disasters. While no community is immune to the risks posed by these large-scale emergencies, colleges, and universities, which are home to numerous vulnerable populations, could be counted among those most at risk. In their current state of overall community preparedness, campuses are not equipped to weather impending dangers; consequently, the impact on students could be disastrous. This study examined preparedness practices at Oregon colleges and universities to better understand how institutions of higher education in the state prepare their students for large-scale emergencies, what challenges …

Faculty Senate Monthly Packet June 2024, Portland State University Faculty Senate

Faculty Senate Monthly Packets

The June 3, 2024 monthly packet includes the June agenda, appendices, and the Faculty Senate minutes and attachments from the meeting held June 3, 2024.

An Assessment Of Equity, Compounding Disasters, And Climate Change In Hazard Mitigation Planning For The Portland Metro Region, Chris Lower

Geography Masters Research Papers

Hazard mitigation plans (HMPs) are strategic documents or policies developed by governments, communities, and organizations to identify risks and reduce the impacts of natural and human- made hazards. These plans aim to minimize loss of life, property damage, and disruption from floods, wildfires, snowstorms, heatwaves, and other disasters. While useful, these plans infrequently and unevenly address the lived experiences of marginalized populations who bear the disproportionate impacts of recurrent disasters. Technocratic planning goals exacerbate these impacts by failing to center inclusive and equity-focused approaches, thus eroding the resilience capacities of many vulnerable groups including the poor and communities of color. …

Enhancing Miter Saw Safety: Challenges And Prospects Of Brake Incorporation With An Automatic Blade Retraction System, Derek Cole

University Honors Theses

Miter saws pose significant safety risks with thousands of injuries reported annually. Despite this risk, they are still used every day as they are a necessity for thousands of workers in the United States and globally. This leaves a demand to make these machines safer to mitigate any potential harm. This research addresses the critical need for an automatic safety system for miter saws, aiming to enhance user safety by retracting and stopping the blade upon skin contact. This analysis identified the primary challenge: The large force generated when braking at high speed on a miter saw blade, translates the …

Hillsboro: Bike And Pedestrian Implementation Recommended Strategy, Maddy Poehlein, Chris Corral, Sierra Willems, Ciara Williams, Lise Ferguson, Shane Seaman

Master of Urban and Regional Planning Workshop Projects

This project presents a contextualized Bike and Pedestrian Implementation Strategy for the City of Hillsboro. The goal was to develop an actionable approach to expand and improve the City’s active transportation network. The strategy incorporates 23 criteria for project selection informed by existing conditions and the City’s priorities. Finally, the report culminates with a recommended implementation approach using two top scoring projects as examples.

Early Detection Of Structural Damage In Uhpfrc Structures Through The Combination Of Acoustic Emission And Ultrasonic Stress Wave Monitoring, Numa Bertola, Thomas Schumacher, Ernst Niederleithinger, Eugen Brühwiler

Civil and Environmental Engineering Faculty Publications and Presentations

Ultra-High-Performance Fiber-Reinforced Cementitious Composite (UHPFRC) offers several advantages compared to concrete, notably due to the strain hardening behavior under tensile actions. Structures made of this composite material are lightweight and highly durable, thanks to the UHPFRC waterproofing quality. Nonetheless, the tensile behavior leads to a different cracking pattern than conventional concrete and is not fully understood yet. This paper presents a combined approach using both passive ultrasonic (US) stress wave (or acoustic emission) and active US stress wave monitoring to localize and quantify damage progression in a full-scale UHPFRC beam during experimental load testing. The proposed monitoring approach involves 24 …

An Index Of Biotic Integrity For Macroinvertebrate Stream Bioassessment Conducted By Community Scientists, Patrick M. Edwards, Daniel Bedell, Shannon Hubler, Chad A. Larson, Kate H. Macneale, Elisa Mickelson, Chris Prescott, Elinore Webb, Jo Wilhelm

Environmental Science and Management Faculty Publications and Presentations

Community science bioassessment has great potential to inform comprehensive stream management plans, but regional analytical tools are needed to evaluate macroinvertebrate data collected through community science programs. To this end, we modified a pre-existing professional index of biotic integrity (IBI) to create a community science IBI (CS-IBI), designed for stream macroinvertebrate data collected by community scientists with minimal training. We used data collected by both professional and community scientists to develop, calibrate, and validate the CS-IBI at 76 streamsites in the Puget Lowland andWillamette Valley ecoregions of the PacificNorthwest in theUnited States. Community science data were taxonomically coarser andmore variable …

Supercomputers And Quantum Computing On The Axis Of Cyber Security, Haydar Yalcin, Tugrul Daim, Mahdieh Mokhtari Moughari, Alain Mermoud

Engineering and Technology Management Faculty Publications and Presentations

Cybersecurity has become a very critical area to address for governments, industry and the academic community. Cyber attacks are on the rise so is research to address the challenges presented by these attacks. Research yields several technological advancements. This paper explores the development of quantum computing and supercomputers within the context of cybersecurity. As many governments and organizations are under the threat of cyber-attacks, it is critical and timely to explore the status of technological development. We use advanced scientometric techniques to disclose the development status and identify the centers of excellence. The research uses bibliometric data of published papers …

Virtual Field Environments Capstone Software Review, Ashton Sawyer

University Honors Theses

This is a review of the Virtual Field Environments computer science capstone project, sponsored by geology professor Rick Hugo. The tool aims to create and render VFEs, interactable 360° environments hosted on the web that are used as virtual field trips for K-12 students. This essay discusses the development process, including understanding requirements, tool and technology selection, problem-solving, and decision-making strategies. It also highlights the differences between the capstone and the other core computer science courses, and how those differences help to prepare students for the workforce. The project was completed over the course of twenty weeks by a team …

Development Of A Two-Photon Imaging System, Jesseca Hollenbaugh

University Honors Theses

The objective of this project was to convert a Sarastro 2000 confocal laser scanning microscope (CLSM) into a system capable of far-field two-photon excitation (TPE) imaging for the use of the PSU Biology department. TPE microscopy operates on the ability of fluorophores to accept two photons each with half the energy of a desired transition in a single quantum event via a virtual energy state and then emit a higher energy photon upon relaxation. This is preferable to single-photon excitation (SPE) imaging due to lower photon imaging, causing less damage to delicate biological samples, as well as the inherent localization …

An Exploration Of Degrowth: Reimagining The Economy In The Face Of Climate Change, Nicole Kristene Martinez-Bergman

University Honors Theses

Climate change is an issue of great magnitude facing the world, and communities are already feeling its effects, especially the most vulnerable. As the planet warms, it threatens to upend global ecosystems, from the oceans to the forests to the earth's atmosphere. Furthermore, the strains climate change places on the earth are a threat to global economic systems as erratic weather damages cities and creates an increasingly unstable agricultural system. However, these changes to the climate are due to anthropogenic impacts, meaning humans have caused this issue. This uniquely positions humans to create a structure to slow and eventually reverse …

Lang2views Capstone: The Importance Of A Conscientious Team Lead, Joseph Wornath

University Honors Theses

This review essay reflects the Lang2views capstone project from the perspective of a team lead. The Lang2views capstone project was a web-based user interface designed to simplify how the Lang2views corporation localizes videos into other languages for their clients. Our capstone group was split into three subgroups: front-end, back-end, and DevOps. The strategy for completing the project went through a major change midway through development wherein we changed our software development methodology from a more rigid Waterfall-type approach to a more flexible Agile methodology. Because of this, many of the initially planned features had to be reevaluated as out of …

Analysis Of Turbulent Flow In Portland-Metro Urban Environment, Shaho Zana Meman

University Honors Theses

Air pollution is a significant issue faced by many major cities worldwide. The geometry and orientation of urban buildings greatly contribute to the dispersion of pollutants throughout cityscapes. To apply this information at a local level, this capstone project aims to analyze the velocity profiles of various areas in the Portland metro area using Computational Fluid Dynamics (CFD). First, we created models for three types of urban geometry: urban, suburban, and rural. Then, we ran simulations using the high-fidelity numerical simulation tool Envi-Met to analyze the turbulent flow field which is believed to have a close relation to air pollutant …