Digital Commons Network^™

Modeling Cyanotoxin Production, Fate, And Transport In Surface Water Bodies Using Ce-Qual-W2, Bernadel Rose Hintz Garstecki, Scott A. Wells

Civil and Environmental Engineering Faculty Publications and Presentations

Cyanobacteria are frequently associated with forming toxic blooms. The toxins produced by cyanobacteria, cyanotoxins, are harmful to both humans and animals. Rising temperatures due to global climate change are expected to increase the occurrence of cyanobacteria, and it is vital that we protect our drinking water supplies and natural water resources. Modeling the production, fate, and transport of these toxins is an important step in limiting exposure to them and evaluating management strategies to mitigate their impact. The research provided here offers an overview of some of the main cyanotoxins of concern and presents preliminary models for the transport and …

Cu2o Heterojunction Solar Cell With Photovoltaic Properties Enhanced By A Ti Buffer Layer, Binghao Wang, Zhiqiang Chen, Feng Zhao

Center for Electron Microscopy and Nanofabrication Publications and Presentations

In this study, semiconductor oxide cuprite (Cu2O) and indium tin oxide (ITO) heterojunction solar cells with and without a 10 nm thick titanium (Ti) thin film as the buffer layer were fabricated and characterized for comparison. The Cu2O film was formed by low-cost electrodeposition, and Ti and ITO layers were deposited on a glass substrate by sputtering. The interfacial microstructures, surface topology, and electrical and photovoltaic properties of both solar cells were investigated. The test results showed that the Ti buffer layer changed the surface morphology, resistivity, and contact potential of the electrodeposited Cu2O film. With these changes, the photovoltaic …

Enhancing The Definitions Of Climate-Change Loss And Damage Based On Land Conversion In Florida, U.S.A., Elena A. Mikhailova, Zhenbang Hao, Hamdi A. Zurqani, Mark A. Schlautman, Gregory C. Post, George B. Shepherd, Sarah J. Kolarik

Geography Faculty Publications and Presentations

Loss and damage (L&D) from climate change result from past and current greenhouse gas (GHG) emissions. Current definitions of L&D exclude GHG emissions even though they represent L&D to human beings and the environment. This study’s objective was to identify and quantify the L&D from GHG emissions associated with land developments using the state of Florida (FL) in the United States of America (USA) as a case study. All land developments in FL caused various L&D (20,249.6 km2, midpoint 3.0 1011 of total soil carbon (TSC) losses with midpoint $50.3B (where B = billion = 109, USD) in social costs …

Policy Implementation In Crisis: Lessons From The Philippines, Steven T. Zech, Joshua Eastin, Matteo Bonotti

Political Science Faculty Publications and Presentations

Like many countries, the Philippines faced severe economic, social, and political challenges during the COVID-19 pandemic. In March 2020 President Duterte issued an executive order announcing a national state of emergency that introduced a highly restrictive system for community quarantine and lockdown. While these measures led international observers to rank the Philippinesʼ pandemic response among the worldʼs most stringent, it is unclear whether subsequent health outcomes were sufficient to justify the severity. In this article, we evaluate discrepancies between COVID-19 policy goals and outcomes in the Philippines via a compelling but under-utilized method of democratic deliberation, the ‘mini-public’. The mini-public …

The Project‑Partnership Cycle: Managing City‑University Partnerships For Urban Sustainability And Resilience Transformations, Liliana Elizabeth Caughman, Fletcher Beaudoin, Lauren Withycombe Keeler

Institute for Sustainable Solutions Publications and Presentations

Cities across the globe are striving to produce viable solutions to pressing urban sustainability and resilience problems. Despite aspirations, municipal governments often need additional support in terms of knowledge, capacity, or resources to achieve transformations. Partnerships between cities and universities are one mechanism for co-producing knowledge and achieving sustained progress on complex challenges. When properly structured and effectively managed, city-university partnerships (CUPs) are purported to increase transformative capacity in city administrations and support actions which accelerate urban transformations; but these outcomes are not always achieved. As CUPs grow in numbers, there is a pressing need to identify which principles and …

Book Review Of, Green Persuasion: Advertising, Voluntarism, And America’S Public Lands, David Peterson Del Mar

University Studies Faculty Publications and Presentations

This richly illustrated, well-written, and well-researched book is difficult to categorize. It offers rewards for scholars with both particular and broad interests in environmental history, as well as for the general reader.

Optic Nerve Head Gene Transcription Sequelae To A Single Elevated Iop Exposure Provides Insights Into Known Responses To Chronically Elevated Iop, Diana C. Lozano, Hari Jayaram, William O. Cepurna, Shandiz Tehrani, Lina Gao, Suzanne S. Fei, Dongseok Choi, Elaine C. Johnson, John C. Morrison

OHSU-PSU School of Public Health Faculty Publications and Presentations

Purpose: To clarify the optic nerve head (ONH) gene expression responses associated with a single, axon-damaging exposure to elevated IOP in relation to the composite cellular events previously identified in models of chronically elevated IOP.

Methods: Anesthetized rats were exposed unilaterally to an 8-hour pulse-train controlled elevation of IOP (PT-CEI) at 60 mm Hg, while others received normotensive CEI at 20 mm Hg. ONH RNA was harvested at 0 hours and 1, 2, 3, 7, and 10 days after either CEI and from naïve animals. RNA sequencing was performed to analyze ONH gene expression. DAVID Bioinformatics tools were used to …

Positive And Negative Experiences With Supportive Services And Programming: Gaps And Recommendations From Youth Experiencing Homelessness, Judy Y. Tan, G. Allen Ratliff, Ilsa Lund, Sherilyn Adams, Colette Auerswald, Marguerita Lightfoot

OHSU-PSU School of Public Health Faculty Publications and Presentations

Services for youth experiencing homelessness (YEH) are designed with limited input from the youth themselves. This study explored the experiences and recommendations for services aimed at mitigating the negative effects of homelessness among youth. A total of 45 interviews were conducted with YEH (ages 15 to 24, M = 21.5 years) who experienced at least one night of homelessness. Transcripts were coded by using a modified constructivist grounded theory approach. YEH reported myriad challenges to navigating disjointed programming and misguided policies. Recommendations from YEH for policy and programmatic change include peacekeeping and diffusion training for program staff, trauma-informed approaches, and …

Current Vehicle Fleet Inventory And Future Implementation Of A Centralized Electric Fleet At Portland State University, Dane Kovaleski

Environmental Science and Management Professional Master's Project Reports

As the effects of climate change continue to impact the world, many institutions have developed climate action goals to reduce their effects on the environment. Portland State University (PSU) has committed to an 80% reduction of greenhouse gas emissions by 2030 and carbon neutrality by 2040. A part of this commitment must include looking at the contributions of transportation on campus to reduce carbon emissions. According to a greenhouse gas emissions report done by the Campus Planning and Sustainability Office in 2016, transportation contributed to 12% of total greenhouse gas emissions on campus.

This project aims to evaluate the management …

Duets And Deadness, Josh Epstein

English Faculty Publications and Presentations

Short-form essay on teaching The Waste Land in relation to sound and media.

An Industry-Standard Profit And Loss Statement For Book Publishing Professionals In The United States, Jackie Krantz

Book Publishing Final Research Papers

Title profit and loss statements (P&Ls) in book publishing are valuable predictive tools for newly acquired titles. They inform the press on how money will be moving through the press in relation to the book’s production, revealing the book’s estimated value and level of profit. However, there is no industry-standard template. This lack of a template makes it difficult for new industry professionals to learn about P&Ls; prevents knowledge of one press’s P&L from being transferrable throughout the industry; and causes smaller presses to potentially neglect this useful tool due to the steep learning curve. The solution is to create …

Assessing Visitor Preferences And Willingness To Pay For Marine National Park Hikkaduwa: Application Of Choice Experiment Method, Chamathi Jayaratne, U.A. D.P. Gunawardena, J. C. Edirisinghe, Sahan Dissanayake, D. Rajapaksa

Economics Faculty Publications and Presentations

Eco-tourism all over the world is threatened by the fact that the coral reefs and associated ecosystems are in a process of disappearing at an accelerated rate due to several natural and anthropogenic causes. In this context, the Marine National Park Hikkaduwa (MNPH), one of the four marine national parks in Sri Lanka, that features a fringing coral reef with a high degree of biodiversity, reports a decreasing trend in visitation mainly due to a condition of coral bleaching caused by an El Nino effect. Unfortunately, the regeneration of the corals is found to be slowed by continuous anthropogenic activities. …

Conducting Oral History: Background And Methods, Katrine Barber

History Faculty Publications and Presentations

This chapter-length essay describes the practice of oral history through real world examples: the steps to conducting oral history interviews, things to consider when developing a project or an interview plan, and ethical considerations. How oral history has enlarged the historical record and changed scholarly interpretation of the past are highlighted.

Extreme Heat Vulnerability Among Older Adults: A Multi-Level Risk Index For Portland, Oregon, Jacklyn N. Kohon, Katsuya Tanaka, Dani Himes, Paula Carder, Eiji Toda, Bryant Carlson

Institute on Aging Publications

Background and Objectives

Extreme heat is an environmental health equity concern disproportionately impacting low-income older adults and people of color. Exposure factors, such as living in rental housing and lack of air conditioning, and sensitivity factors, such as chronic disease and social isolation, increase mortality risk among older adults. Older persons face multiple barriers to adaptive heat mitigation, particularly for those living in historically temperate climates. This study measures two heat vulnerability indices to identify areas and individuals most vulnerable to extreme heat and discusses opportunities to mitigate vulnerability among older adults.

Research Design and Methods

We constructed two heat …

Embryonic Development Of Natural Annual Killifish Populations Of The Genus Austrolebias: Evolutionary Parallelism And The Role Of Environment, Hellen Schlueb, Daniel Blanco, Daniel García, Jason Podrabsky

Biology Faculty Publications and Presentations

1. Repeated, independent emergence of the same trait within different phylogenetic lineages is termed parallel evolution. It typically occurs as a result of similar selective pressures. Annual killifish have adapted to survive in the extreme habitat of temporary pools on three continents and present an especially amenable system for studying fundamental principles of evolutionary parallelism. When the pools dry, annual killifish embryos survive through the dry phase in the bottom substrate in a stage of dormancy—a diapause. The diapause is a complex set of three different developmental stages, none of which is obligate, thus leading to a multitude of potential developmental …

Sleep Diplomacy: An Approach To Boosting Global Brain Health, Diego A. Golombek, Laura Booi, Dominic Campbell, Walter Dawson, Harris A. Eyre, Brian Lawlor, Agustin Ibanez

Institute on Aging Publications

Sleep diplomacy highlights the urgent need to address the widespread issue of sleep deprivation and its detrimental effects on overall health, particularly brain health and healthy ageing. By providing practical advice on sleep hygiene, healthy schedules, and light exposure, sleep diplomacy aims to promote a comprehensive approach to well-being. Despite the well-established importance of sleep for optimal cognitive function, emotional regulation, and physical abilities, it is often neglected in public and medical recommendations. Our proposed concept of sleep diplomacy also offers practical recommendations to address sleep issues in various settings and populations.

Migration Integration Policies As Social Determinants Of Health For Highly Educated Immigrants In The United States, Mitra Naseh, Yingying Zeng, Ian Sutherland, Abha Rai, Hyunwoo Yoon

School of Social Work Faculty Publications and Presentations

Highly educated immigrants are part of the growing population of immigrants who are impacted by the increasingly hostile migration policies in the U.S. This qualitative study used a phenomenological approach and inductive reasoning to explore the possible impacts of migration integration policies as social determinants of health among this group. Data was collected through 31 semi-structured interviewees with highly educated immigrants who had an intention and interest to stay in the U.S. at the time of the interview. Data were analyzed using reflexive thematic analysis and four main themes emerged: (1) a life overshadowed by silent worries, (2) living through …

Re-Imagining Mandatory Reporting: Professionalization's Complicity, Sam Harrell, Stephanie Wahab

School of Social Work Faculty Publications and Presentations

Mandatory reporting of child abuse is a part of the civil legal system that can activate a policy cascade disproportionately criminalizing racialized and marginalized communities. While social work scholarship has explored ways to increase provider compliance with mandatory reporting laws, there is a dearth of research focused on how social work education guides future providers towards the praxis of mandatory reporting discourses. This article presents findings from a content analysis of social work textbook excerpts focused on mandatory reporting of child abuse in the U.S. We found that textbooks affirm social work’s loyalty to the State by approaching mandatory reporting …

Lift Force Analysis For An Electrodynamic Wheel Maglev Vehicle, Colton W. Bruce, Jonathan Bird, Matthew K. Grubbs

Electrical and Computer Engineering Faculty Publications and Presentations

This paper used an analytic based 3-D second order vector potential model to study the vertical dynamic force ripple and dynamic airgap height change when using a one pole-pair electrodynamic wheel (EDW) maglev vehicle. A one-pole pair EDW creates the lowest lift specific power; however transient finite element analysis (FEA) also shows that the one pole-pair EDW will create a large oscillating vertical force when maintaining a static airgap height. A dynamically coupled eddy current model was used to confirm that when the airgap length is allowed to change with time then an increase in vertical airgap creates a large …

Distributed Deep Learning Optimization Of Heat Equation Inverse Problem Solvers, Zhuowei Wang, Le Yang, Haoran Lin, Genping Zhao, Zixuan Liu, Xiaoyu Song

Electrical and Computer Engineering Faculty Publications and Presentations

The inversion problem of partial differential equation plays a crucial role in cyber-physical systems applications. This paper presents a novel deep learning optimization approach to constructing a solver of heat equation inversion. To improve the computational efficiency in large-scale industrial applications, data and model parallelisms are incorporated on a platform of multiple GPUs. The advanced Ring-AllReduce architecture is harnessed to achieve an acceleration ratio of 3.46. Then a new multi-GPUs distributed optimization method GradReduce is proposed based on Ring-AllReduce architecture. This method optimizes the original data communication mechanism based on mechanical time and frequency by introducing the gradient transmission scheme …

Addressing Encampments On State Transportation Rights-Of-Way With Marisa Zapata, Marisa Zapata

PDXPLORES Podcast

On this episode of PDXPLORES, Marisa Zapata, Associate Professor of Land-Use Planning and Director of PSU's Homelessness Research & Action Collaborative, discussed her team’s grant-winning work developing a guidebook in conjunction with state departments of transportation, utilizing best suggested and equitable practices when responding to, managing and deterring homeless encampments on states rights-of-ways not designed for public use: a growing–and potentially dangerous–trend presenting unprecedented challenges.

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The Allegory Of United States Settlers V. Native Americans In Wes Craven's The Hills Haves Eyes (1977), Blue Van Alst

University Honors Theses

The year 1977 saw the release of Wes Craven’s second major production, The Hills Have Eyes. A film that sits within a filmic library of Craven that works to use the horror genre to reflect on and critique the American society that he lived in. The Hills Have Eyes employs the stereotypes that the films of John Ford helped to solidify in U.S. society. He does this in order to explore the tense historical relationships between Indigenous and United States settlers during the time of westward expansion. Using the white middle class Carter family to serve as settlers, and …

Oregon Tribal Land & County Population Projections By Race & Ethnicity, Population Research Center, Portland State University, Neal Marquez, Ethan Sharygin, Deborah Loftus, Huda Alkitkat, Gilbert Montcho, David Swanson, Joshua Wilde

Publications, Reports and Presentations

Oregon House Bill 2003 from the 2019 legislative session (HB 2003) prioritizes equitable planning to address past and ongoing disparities in access to affordable housing, and Executive Order (EO) 20-04 (2020) declared a priority to address differential vulnerability to natural hazards by race and ethnicity. These priorities and Goal 10 of the Oregon Department of Land Conservation and Development (DLCD) collectively identify an unmet and growing need for population projections with race and ethnicity detail, disability status, and for American Indian tribal lands in Oregon.

House Bill 5006 from the 2021 session (HB 5006), appropriated funds to study and make …

Dancers Of The Book: Yemenite, Persian, And Kurdish Jewish Dance, Quinn Bicer

Anthós

Despite the cultural significance of dance in Jewish communities around the world, research into Middle Eastern Jewish dance outside of the modern nation-state of Israel is sorely under-researched. This article aims to help rectify this by focusing on Yemenite, Persian/Iranian, and Kurdish Jewish dance and explores how these dancers have functioned and been received within the societies they have been a part of. The methods that have gone into this article are a combination of analyzing primary source recorded dances and existing secondary source research into the dance of these communities. Through these methods, this article reveals how Yemenite, Iranian, …

“For The Right To Live”: Radical Activity In Portland’S Parks During The Great Depression, Eliana Bane

Anthós

During the Great Depression, Portland's working class joined in the national surge of radicalism to fight for economic relief and social justice. One of organized labor’s most effective strategies was to stage mass demonstrations in highly visible public spaces, such as Plaza Park adjacent City Hall in downtown. Rallying in city parks represented workers’ determination to exercise their free speech in spite of Red Scare suppression of leftist radicals. This essay explores the role of public parks in the history of the labor movement in Portland during the Depression, primarily focusing on Plaza Park since it was a hub for …

Nella Larsen’S Passing: Ambiguous Symbology & Weather, Sara Casten

Anthós

Nella Larsen wrote Passing in 1929, a novella that explored the relationship between two women of mixed race: Irene and Clare. This article highlights the complimentary weather elements with the emotional turbulence experienced by Irene as she tells the story; Clare’s warmth and beauty to Irene’s cold and lack thereof. This article also explores the skills of Larsen to write these ambiguous complimentary weather elements in Passing by highlighting her other novella Quicksand, published the year before.

The Impact Of Sars-Cov-2 On The Consolidated Meatpacking System In The United States, Judith R. Solomon

Anthós

The Sars-Cov-2 virus has had a particularly intense impact on the meatpacking industry in the United States. In this paper I provide a brief introduction to the social, economic, and political realities that lead to mass deaths of meatpacking workers from COVID, and the impact of a consolidated meatpacking system on disease mitigation. These workers are considered expendable due to a lack of power.

Diabolical Or Masculine Men? Opposing Views Of Male Witches In Early Modern England, Giuliana T. Mintiero

Anthós

Accused witches in early modern England were predominantly female, with historians often connecting the witches’ gender to these accusations. However, a small but substantial number of males were also accused of witchcraft. This has sparked debate in the discourse community over whether gender plays a role in witchcraft accusations against males. In their respective articles, witchcraft scholars Millar and Kent both ask how ordinary people during the English witchcraft trials of the sixteenth and seventeenth centuries viewed males accused of witchcraft, arriving at very different conclusions. Millar determines that male witches’ gender is not important, while Kent decides that it …

Postpartum And The Pressure To Work, Summer Brother

Anthós

In the United States, the lack of availability and support around maternity leave results in mothers rushing back to the workforce soon after childbirth. Topics such as breastfeeding, physical trauma, postpartum depression, and working while in the postpartum period, all pile together to paint a picture of what it means to be a new mother in America. Through the use of qualitative data and academic sources, the article's findings conclude that health and bonding between the mother and baby are interconnected. The rush to begin work again also affects all aspects of one's health, often beyond the six to eight …

Transforming The Culture Of Biology Teaching With Erin Shortlidge, Erin E. Shortlidge

PDXPLORES Podcast

In this episode of PDXPLORES, Associate Professor of Biology and Biology Education, Erin Shortlidge, discusses her NSF-funded research project, Evolving the Culture of Biology-Promoting Graduate Teaching Assistant Professional Development to Foster Inclusion, Efficacy, and Evidence-based Practices. Shortlidge and her team seek to transform the culture of biology education through a series of workshops for administrators, faculty, and staff who develop training programs for graduate teaching assistants. The ultimate aim is to improve the undergraduate STEM experience through intentional training of future STEM faculty.

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