Digital Commons Network^™

Experiences Of Support And Success For Students Of Color In The Midwifery Educational Setting, Laura Jenson

Dissertations and Theses

The United States spends more on healthcare than any other developed country, yet perinatal health outcomes are among the worst, particularly for Black and Indigenous pregnant women and people. Structural and societal racism has contributed greatly to these inequities, and while a diverse perinatal healthcare workforce has the potential to mitigate the impact of pervasive racism, professions such as nurse-midwifery have evolved over time to be predominately white. The purpose of this study is to explore how students of color experience support and apply personal strategies for success in the midwifery educational setting. A basic qualitative study was done using …

Faculty Senate Monthly Packet May 2025, Portland State University Faculty Senate

Faculty Senate Monthly Packets

The May 2025 monthly packet includes the agenda, appendices, and the Faculty Senate minutes and attachments given in the meeting held May 5, 2025.

Comparing Mentored Research Experiences For Undergraduates Across Institutional Contexts, Jazzmine K. Waugh, Sanya M. Surya, Mackenzie Gray, Thomas E. Keller

School of Social Work Faculty Publications and Presentations

Background: Mentored undergraduate research experiences (UREs) can play a critical role in developing science identity and skills, especially for students from historically underrepresented backgrounds. This study investigates science identity and responsibility for scientific roles among scholars in a program aiming to diversify the biomedical workforce. Scholars were placed in UREs at either their home institution (a minority-serving institution [MSI]) or at a research-intensive medical institution with a Clinical and Translational Science Award (CTSA). Methods: We analyze data from surveys administered annually to the scholars. We first compare changes in science identity for scholars placed at the MSI and the CTSA …

Cuju: The Ancient Chinese Game That Held An Empire Together, Enzo H. Smith

Young Historians Conference

This paper explores how cuju, an ancient sport known as the predecessor of modern football, evolved from the Han to Song dynasties (206 BCE–1368 CE) as a unifying force in imperial China. Calling upon primary sources such as ancient cuju manuals and various art pieces suggests this sport's importance went beyond a leisurely practice. Using academic journals about Chinese history and the development of cuju from different academic fields and, most notably, the FIFA museum’s online exhibit of cuju, the reason cuju had such a strong place of value in Chinese society was apparent. Beginning as a combat exercise in …

A Crucial Western Foothold: Uyghur-Americans In The Fairfax-D.C. Metro Area, Jake C. Mccauley

Young Historians Conference

Since the 1980s, the Uyghur people of East Turkestan, now known as the Xinjiang Uyghur Autonomous Region, have migrated from their ancestral homeland in China in search of a better life. As an ethnically, linguistically, and religiously distinct group, the Uyghurs face severe oppression, with the Chinese state targeting them economically, socially, and physically. Since 2017, mass internment efforts have escalated, leading to the establishment of labor camps that claim to transition Uyghur labor from agricultural to industrial sectors but also serve as sites of ideological indoctrination, torture, and death. As a result of these human rights violations and other …

How The Cheating Of East And West Germany Reveals A Global Trend Of Doping In International Sports, Olivia L. Cheng Miss

Young Historians Conference

In 1989, the Berlin Wall fell, representing the end of both a deep physical and ideological divide between East and West Germany. The fall of the Berlin Wall revealed a state-sponsored doping program in East Germany created in order to compete for the political and economic symbol of strength: Olympic medals. Years later, the exposure of widespread West German doping in competitions shows the capacity of cheating to spread like a pathogen, passed from one nation to another in a pattern still visible today. Though East and West Germany were the epicenter of the doping outbreak, the trend spread globally …

Islands In Motion: The Transnational Ties Between Japan And Hawaii, 1885-1945, Annalise Jones

Young Historians Conference

Native Hawaiians have been joined on their islands by Japanese, Filipino, Chinese, and Europeans in recent centuries. Because of this, Hawaii has generally had a more tolerant attitude towards racial diversity. However, the relationship between Hawaii and Japan is a transnational one that has evolved over generations. In 1941, 37% of Hawaii’s population was Japanese. Beginning with only 150 contract laborers in 1868, immigrants had come from Japan to Hawaii in droves throughout the late 19th and early 20th centuries, attracted by steady work and wages. Since then, Japanese people and their descendants have had a marked impact on the …

The Roots Of Ethno-Political Strife In Ceylon: The Dividing Power Of British Colonialism, Audrey Francioch

Young Historians Conference

A bloody civil war has rocked Sri Lanka for decades, as the Sinhalese and Tamil populations fight each other for recognition, access, and control. Since the 1950s, each group has feared domination by the other, resulting in bitter battles on the ballots and in the streets to assert or retain power and subjugate the culture of the other. Each conflict perpetuates the vicious circle of retaliation and retribution through the generations, and the roots of this divide can be directly traced to the colonial occupation of the island in the 1800s. What began with the Dutch and became refined by …

Reflecting Life Back: The Influence Of Mirrors On Human World History, Helen F. Cruz-Uribe Bandstra

Young Historians Conference

Ten thousand years ago, humans first created mirrors. They were developed simultaneously all over the world, reflecting the innate human desire to see something so close to us, yet so hard to view. Our own face. While this invention had a simple initial purpose, it quickly became tied to many of the more complicated developments of human life, including, but not limited to, religion, power, and technology. We see this reflected in everything from the polished obsidian mirrors of Mesoamerica, used to commune with the gods and revered for their reflectiveness, to the bronze mirrors of Greece used in early …

Form Follows Function: An Analysis Of De Architectura And Its Influence, Weston Klein

Young Historians Conference

Over 2000 years ago, the Roman architect and engineer, Marcus Vitruvius Pollio, scribed De Architectura, a multi-volume work unearthed in the 15th century, in St. Gallen, Switzerland. As the only surviving architectural source from antiquity, the book has been indispensable in the study of Greco-Roman architecture, positioning Vitruvian and Greco-Roman architectural concepts in many ways as one in the same. Additionally, Vitruvian ideas, as expressed in De Architectura, regarding architectural form, materials, location, and process have been foundational to the evolution of Western architecture. This paper explores De Architectura’s impact on Western architectural theory and practice spanning the Early Middle …

35th Annual Young Historians Conference Program, Portland State University History Department, Portland State University Challenge Program

Young Historians Conference

This is the 2025 Young Historians Conference schedule and abstracts.

Enhancing Frequency Event Detection In Power Systems Using Two Optimization Methods With Variable Weighted Metrics, Hussain A. Alghamdi, Midrar A. Adham, Umar Farooq, Robert B. Bass

Electrical and Computer Engineering Faculty Publications and Presentations

This research presents a novel technique that refines the performance of a frequency event detection algorithm with four adjustable parameters based on signal processing and statistical methods. The algorithm parameters were optimized using two well-established optimization techniques: Grey Wolf Optimization and Particle Swarm Optimization. Unlike conventional approaches that apply equally weighted metrics within the objective function, this work implements variable weighted metrics that prioritize specificity, thereby strengthening detection accuracy by minimizing false-positive events. Realistic small- and large-scale frequency datasets were processed and analyzed, incorporating various events, quasi-events, and non-events obtained from a phasor measurement unit in the Western Interconnection. An …

Addressing The Promise And Peril Of Ai For Nonprofit Management Through A Data Feminist Pedagogy, Billie Sandberg, Rafeel Wasif, Laura C. Hand

Public Administration Faculty Publications and Presentations

The use of artificial intelligence (AI) has opened up possibilities for nonprofit management, and practitioners are taking notice. A recent study revealed that nearly 90% of nonprofit organizations are interested in using AI (MacDonald, Citation2023). Another study indicated that more than half of the nonprofits surveyed use AI to support finance, human resources, communications, and mission-related (i.e., working with clients, program implementation, and grantmaking) functions (Herschander, Citation2024). Indeed, many of us likely know student-practitioners and nonprofit colleagues who leverage AI to help write donor thank-you notes, newsletters, grant proposals, and press releases and who work for nonprofits that incorporate chatbots …

Effects Of Wetting Events On Mass Timber Surface Microbial Communities And Voc Emissions: Implications For Building Operation And Occupant Well-Being, Gwynne Á. Mhuireach, Susan Collins, Leslie Dietz, Patrick Finn Horve, Aurélie Laguerre, Dale Northcutt, Jason Stenson, Kevin Van Den Wymelenberg, Elliott Gall, Mark Fretz

Mechanical and Materials Engineering Faculty Publications and Presentations

IntroductionHumans have used wood as a construction material throughout history. Currently, mass timber products, such as cross-laminated timber (CLT), are becoming more popular as a structural material, since they are renewable and have a lower carbon footprint than concrete or steel. Nonetheless, some building types, such as healthcare, veterinary, and food manufacturing, avoid using structural mass timber due to concerns about microbial growth in the event of wetting. One solution is to use protective coatings on mass timber products to increase moisture resistance, although the coatings themselves may generate concerns about volatile organic compound (VOC) emissions. Natural uncoated wood also …

Faculty Senate Monthly Packet April 2025, Portland State University Faculty Senate

Faculty Senate Monthly Packets

The April 2025 monthly packet includes the agenda, appendices, and the Faculty Senate minutes and attachments given in the meeting held April 7, 2025.

An Effective Genetic Algorithm For Mixed Precision, Wanyu Zhang, Yu Shang, Min Tsao, Yiwei Li, Xiaoyu Song

Electrical and Computer Engineering Faculty Publications and Presentations

The precision of floating-point numbers is a critical task in high-performance computing. Many scientific applications rely on floating-point arithmetic, but excessive precision can lead to unnecessary computational overhead. Reducing precision may introduce unacceptable errors. Addressing this trade-off is essential for optimizing performance while ensuring numerical accuracy. In this paper, we present a genetic algorithm-based approach for tuning the precision of floating-point computations. Our method leverages algorithmic differentiation and first-order Taylor series approximation to assess the impact of precision variations efficiently. We employ stochastic partitioning algorithms with multiple precision combinations that meet the error requirements. Moreover, we present a genetic heuristic …

Acompañamiento And Assessment: Examples Of Community Building Through Assignments In A First-Year Class, Shaianne Tran, Hector Amezola, Dalissa Rodriguez, Morgan Baird, Jennifer Fuentes Luna, Alejandra Vazquez, Fattemah Zia, David Peterson Del Mar

Amplify: A Journal of Writing-as-Activism

This collection of seven diverse assignments written by students from under-represented communities for a first-year inquiry class on immigration, migration, and belonging illustrates how instructors can facilitate a sense of belonging or acompañamiento through course assignments, assessment instruments. Each of the student authors provides a retrospective introduction on how their personal reflection, essay, or research project helped them to make personal connections within or outside of the class. The instructor provides a brief introduction to the concept of acompañamiento and why it is particularly important for New Majority college students.

Seabed Characterization Using Ambient Sound For A Range-Dependent Track In The New England Mud Patcha, Martin Siderius, Stan E. Dosso, Brian Granger

Electrical and Computer Engineering Faculty Publications and Presentations

Wind-generated, ocean ambient sound data were used to characterize seabed properties along a track in the New England Mud Patch. A 15-m vertical array, consisting of 16 hydrophones, collected ambient sound data across the 50–5000 Hz frequency band. The array drifted for 1 h, covering a 1.7 km track. Seabed characterization was performed using beamforming techniques, which limited the analysis to the 400–700 Hz band. Passive fathometer processing was applied to estimate the water–seabed interface and sub-bottom layering. Additionally, the data were used to estimate the power reflection coefficient, which was then used as input for a trans-dimensional geoacoustic inversion. …

Vessel Trajectory Prediction With Recurrent Neural Networks: An Evaluation Of Datasets, Features, And Architectures, Isaac Slaughter, Jagir Laxmichand Charla, Martin Siderius, John Lipor

Electrical and Computer Engineering Faculty Publications and Presentations

Maritime situational awareness tasks such as port management, collision avoidance, and search-and-rescue missions rely on accurate knowledge of vessel locations. The availability of historical vessel trajectory data through the Automatic Identification System (AIS) has enabled the development of prediction methods, with a recent focus on trajectory prediction via recurrent neural networks (RNNs) and other deep learning architectures. While these methods have shown promising performance benefits over kinematic and clustering-based models, comparing among RNN-based models remains difficult due to variations in evaluation datasets, region sizes, vessel types, and numerous other design choices. As a result, it is not clear whether recent …

Pathos, Spring 2025, Portland State University. Student Publications Board

Pathos

Editor: Adriana Stanzione

Improved Biomass Cookstove Use In The Longer Run: Results From A Field Experiment In Rural Ethiopia, Alemu Mekonnen, Abebe D. Beyene, Sahan Dissanayake, Randall Bluffstone, Zenebe Gebreegziabher, Daniel Lafave, Peter Martinsson, Michael Toman

Economics Faculty Publications and Presentations

This study examines longer-run usage frequency of Mirt improved biomass cookstoves (ICS), one of the most important ICS promoted in Ethiopia. Mirt has been shown to improve childhood health, and reduce fuelwood consumption and greenhouse gas emissions, but to generate those benefits, households must regularly use it over extended periods. Thus, this paper focuses on longer-run use using stove surface temperature data over five time intervals. We find that, close to its estimated lifespan, 63 per cent of households had their stoves in place after more than 3.5 years. Of those who abandoned their stoves, over 80 per cent did …

Accelerating High-Throughput Phonon Calculations Via Machine Learning Universal Potentials, Huiju Lee, Vinay I. Hegde, Chris Wolverton, Yi Xia

Mechanical and Materials Engineering Faculty Publications and Presentations

Phonons play a critical role in determining various material properties, but conventional methods for phonon calculations are computationally intensive, limiting their broad applicability. In this study, we present an approach to accelerate high-throughput harmonic phonon calculations using machine learning universal potentials (MLIPs) combined with an efficient training dataset generation strategy. Instead of computing phonon properties from a large number of supercells with small atomic displacements of a single atom, our approach uses a smaller subset of supercell structures where all atoms are randomly displaced by 0.01 to 0.05 UŮ, significantly reducing computational costs. We train a state-of-the-art MLIP based on …

Geotechnical Centrifuge Test Of A Pile-Supported Wharf In Silt (Test Aep01), Andrew Earl Parrott

Dissertations and Theses

There have been many documented cases in the U.S. and elsewhere of failure to ports, wharves, and bridges during seismic events due to liquefaction of soils adjacent to foundations. The major design guidelines for surface and maritime transportation structures, such as those offered in ASCE 61-14, Port of Anchorage Seismic Design Manual (POA 2017), AASHTO (2020), Caltrans (2012), and many others, differ considerably on the recommendations for combining the expected inertial and kinematic loads on the pile system. This knowledge gap becomes wider for pile foundations embedded in low plasticity silt, as varying opinions exist on the appropriate characterization of …

College Outcomes For Young Adults With And Without Learning Disabilities And Adhd: Formal-Disability-Programming And Informal-Disability-Supports, Dara R. Shifrer, Rachel Springer, Hannah Sean Ellefritz, Ned Tilbrook

Sociology Faculty Publications and Presentations

Inequalities by disability status in college outcomes contribute to inequalities throughout adulthood in multiple domains. As the share of students with learning disabilities and/or ADHD increases on college campuses, research is needed on how best to support these undergraduates, both through formal and informal means. We integrate the social and medical models of disability with data on nearly 17,000 young adults in the US, who typically finished high school in 2013, and find that formal-disability-programming relates negatively to college enrollment but has no apparent bearing on college persistence. Among youth with similar sociodemographic backgrounds and comparable end of high school …

Confirmation Of The Scanpyramids North Face Corridor In The Great Pyramid Of Giza Using Multi-Modal Image Fusion From Three Non-Destructive Testing Techniques, Thomas Schumacher, Polina Pugacheva, Hussien Allam, Alejandro Ramirez-Pinero, Benedikt Maier, Johannes Rupfle, Khalid Helal, Olga Popovych, Amr G. Hamza, Mohamed Sholqamy, Multiple Additional Authors

Civil and Environmental Engineering Faculty Publications and Presentations

Abstract While non-destructive testing (NDT) measurements have been reported individually for archeological surveys of cultural heritage structures, only a few studies to date have attempted to combine NDT images by means of image fusion (IF). In this article, novel multimodal IF results from three different NDT techniques collected at the Chevron located on the Great Pyramid of Giza (aka. as Khufu’s Pyramid) are presented. The Chevron is an assembly of limestone blocks located in front of the recently confirmed ScanPyramids North Face Corridor (SP-NFC), which had been previously hidden for 4500 years. Under the research activities of the ScanPyramids mission, …

Between Fire And Water: Miyazawa Kenji's Reimagining Of Opposites In Ginga Tetsudō No Yoru, Taishi Neilsen

University Honors Theses

This thesis explores how Japanese writer Miyazawa Kenji playfully uses opposites and binaries to create thematic richness in his famous children's story Ginga tetsudō no yoru (Night on the Milky Way Railroad). Despite being a children's book, the text works with mature themes such as loneliness, grief, and purpose, themes which are elevated through Kenji's idiosyncratic stylings. Through a close reading of the original Japanese text, the author isolates moments where Kenji conveys his Nichiren Buddhist worldview as part of his proselytizing mission, as well as moments that increase thematic richness, resulting in a multifaceted text that continues …

Working Paper No. 89, Towards A Veblenian View Of The Digital Realm, Tanner Weber

Working Papers in Economics

This inquiry seeks to establish that Thorstein Veblen’s writings offered insights that could assist us in understanding the digital realm in contemporary times. Through advancing his thinking for dealing with the instincts of idle curiosity and workmanship, in particular, Veblen provided an understanding of capital as technologies, especially, that should be valued as contributions to the common and joint stocks of knowledge. Back in his day, Veblen’s understanding of capital, ownership, and private property offered ways for us to think of some of the potential usages of technology as well as a range of possibilities for sabotage. What …

Urban Beavers At The Crossroads: How Ecological Knowledge, Sociodemographic, And Spatial Context Shape Public Perception And Coexistence Preferences, Matthew Guziejka

Dissertations and Theses

Urban beavers demonstrate synurbization by adapting to urban environments, offering ecological benefits such as biodiversity enhancement and flood mitigation, while also occasionally conflicting with infrastructure. This study examines how ecological knowledge, sociodemographics, and spatial context influence public perceptions and management preferences for urban beavers in the Tualatin River watershed, Oregon.

A voluntary survey of 176 participants from peri-urban areas assessed demographic characteristics, ecological knowledge, and attitudes toward management approaches. Spatial factors, such as proximity to watercourses and green spaces, were also analyzed. Logistic regression analyses were used to explore relationships between these factors and management preferences. Political orientation was significantly …

Foliar Water Uptake Mitigation Of Urban Drought Stress, Rory Price, Samantha Hartzell Dr., Lauren Lowman Dr., Sybil Gotsch Dr.

Urban Ecosystem Research Consortium of Portland/Vancouver

Foliar water uptake (FWU) is a process trees use to uptake water vapor into their leaves, which alleviates water stress in plants, potentially mitigating overall urban landscape water stress. This study aims to model FWU of water vapor through the leaf stomata and cuticle, assuming both saturated and unsaturated leaf internal air space, to understand the impact FWU can have on mitigating drought and heat crises in urban environments. FWU is crucial for tree survival in drought periods, leading to decreases in urban temperatures, shown using leaf temperature modeling.

Rates of foliar water uptake are assessed using a soil-plant-atmosphere continuum …

Gait Characteristics In People With Friedreich Ataxia: Daily Life Versus Clinic Measures, Hannah L. Casey, Vrutangkumar V. Shah, Daniel Muzyka, James Mcnames, Mahmoud El-Gohary, Kristen Sowalsky, Delaram Safarpour, Patricia Carlson-Kuhta, Christian Rummey, Fay B. Horak, Christopher M. Gomez

Electrical and Computer Engineering Faculty Publications and Presentations

Gait assessments in a clinical setting may not accurately reflect mobility in everyday life. To better understand gait during daily life, we compared measures that discriminated Friedreich ataxia (FRDA) from healthy control (HC) subjects in prescribed clinic tests and free, daily-life monitoring.MethodsWe recruited 9 people with FRDA (median age: 20, IQR [12, 48] years). A comparative healthy control (HC) subject cohort of 9 was sampled using propensity matching on age (median age: 18 [13, 22] years). Subjects wore 3 inertial sensors (one each foot and lower back) in the laboratory during a 2-min walk at a natural pace, followed by …