Digital Commons Network^™

Materials And Methodologies For Spectroscopic And Optical Analytical Applications In Cultural Heritage Conservation Science, Lyndsay Nichole Kissell

Dissertations and Theses

The field of conservation science falls in the intersection of science and art. The work of conservation scientists may include any single subdiscipline of chemistry, though it is most commonly a highly interdisciplinary field taking skills from analytical, organic, and inorganic chemistry, as well as surface and materials science. The aims of conservation scientists are to answer questions about the production and aging of material cultural heritage. Knowing the materials used by an artist can lead to insight about the intentions of the object and knowing how those materials degrade will enable the use of preventative measures to ensure the …

The New Shiny Penny? Regenerative Agriculture Beliefs And Practices Among Portland's Urban Agriculturalists, Melia Ann Chase

Dissertations and Theses

Regenerative agriculture (RA) is a set of farming and land management practices intended to support or enhance soil health and carbon sequestration potential of soils while producing food, fiber, or other agricultural products. It has received broad acclaim from scholars, corporations, and governmental bodies as a potential means of sequestering carbon and mitigating climate change impacts. It has also received critique and pushback for its vague definition, shifting metrics, and lack of acknowledgement of the Indigenous practices underlying the modern suite of regenerative practices. The purpose of this research is to investigate the beliefs Portland, Oregon urban agricultural practitioners hold …

American Apartheid In The Walamt Valley: The Creation Of Grand Ronde And The Struggle To Assimilate To A Segregated Society, Bruce Jenks

PSU McNair Scholars Online Journal

Throughout its history the United States government professed the goal of assimilation of North America’s indigenous peoples. Whatever words Americans used to frame this social project, it was clearly the result of a view of Native societies as inferior to their own. In investigating the events surrounding the colonization of the Willamette Valley in the 1850s it becomes clear that apartheid, rather than assimilation, was the goal and the result of American colonization in Oregon. Working back from the text “My Life: The Autobiography of Louis Kenoyer,” dictated to anthropologist Melville Jacobs in the 1920s by a Tualatin man about …

Random Lasing In Nano-Crystalline Zinc-Oxide Films, Benito Reynaldo Resendiz

Dissertations and Theses

In this thesis, we explore the preparation of random lasers (RLs) using solution-deposited, randomly packed nano-particle films of zinc oxide (ZnO) impregnated with silicon dioxide (SiO₂) nanospheres. RLs have their scatterers randomly oriented, while their lasing comes from light propagating along closed paths through the scattering environment. It is shown here that random lasing is readily observed in films made of submicron sized ZnO particles. Adding transparent SiO₂ nanospheres to the films, we show there is an effective improvement of the lasing that is observable in all of the samples spectra. Specifically, we found that the lasing …

Inverse Modeling Of Atmospheric Ch4 And Δ13C-Ch4 Measurements From Surface Observation Sites To Understand Trends In Global Methane Emissions Over More Than Three Decades, Sayantani Karmakar

Dissertations and Theses

Methane (CH₄) is the second most important greenhouse gas with a radiative forcing of 0.97 W/m² including both direct and indirect effects and a global warming potential of 28 over a 100-year time horizon. Unlike CO₂ whose rate of growth in the atmosphere has remained positive and increased in recent decades, the behavior of atmospheric methane is considerably more complex and is much less understood on account of the spatiotemporal variability of its emissions which include biogenic (e.g., wetlands, ruminants, rice agriculture), thermogenic (fossil fuels), and pyrogenic (i.e., biomass burning) sources. After sustained growth during most …

Development Of A Testing Station For Grid-Interactive Smart Inverter Systems, Yudong Lan

Dissertations and Theses

As renewable energy penetration increases within the electrical power grid, flexible power is required to ensure reliability. Reliability can be jeopardized by the fluctuation and non-dispatch ability of renewable generators. This instability is caused by an imbalance between the amount of power produced and the amount of power consumed. Grid-enabled battery inverter systems are considered a solution to offset voltage and frequency fluctuations, which arise due to this power imbalance.

The objective of this work is to develop a system for testing grid-enabled inverters. These inverters use one or more communication standards to control their interactions with the grid. This …

Heat, Wildfire And Energy Demand: An Examination Of Residential Buildings And Community Equity, Chrissi Argyro Antonopoulos

Dissertations and Theses

Extreme heat and wildfire events are becoming more prolific and exacerbated by climate change, carrying significant implications for environmental and social systems. Residential buildings play a central role in protecting people from heat and pollutant exposure during extreme weather events, but the level of protection varies dramatically depending on building energy efficiency and technology availability. Low-income and communities of color have higher energy burdens compared to affluent populations, and underserved communities often do not have financial resources for, or access to, advanced building technologies. This dissertation explores the impacts of extreme heat and wildfire on residential buildings, focused specifically on …

More Than Words: Articulating The Multisensory Experiences Of Protected Area Visitors In Southern Nevada, Sara Nicole Temme

Dissertations and Theses

The complex sensory experiences of visitors to U.S. protected areas are not well understood. Previous research investigates visitor activities, motivations, and the ways place attachment cultivates support for conservation activities and other pro-environmental behavior. However, it is unclear how protected area visitor sensory experiences contribute to these behaviors. This study aims to articulate the multisensory experiences of visitors to the Desert National Wildlife Refuge Complex and the Spring Mountains National Recreation Area in southern Nevada, U.S.A. Specifically, it demonstrates the complexity of these experiences as present, intertwined, and embodied in all visit phases: before, during, and after. Utilizing a mixed-method …

Geographies Of Urban Unsafety: Homeless Women, Mental Maps, And Isolation, Jan Radle Roberson

Dissertations and Theses

This study explores the intersection of urban unsafety and the marginalized population of homeless women. Specifically, it investigates how homeless women identify/perceive and navigate unsafe urban space. Specific research questions include:

1. What does housing insecurity look like for an unhoused woman?

2. In what ways is mental mapping a robust tool for gathering the stories (data) of vulnerable populations such as unhoused women?

3. What does the spatialization of unsafe locations look like and are demographic groupings dissimilarly affected?

4. What are the critical reasons for unsafety identified by participants?

5. How do homeless women respond to urban unsafety; …

Measuring Morality In The 2020 Us Presidential Election, Scott Edward Atkins

Dissertations and Theses

This study explores the moral content evident in speeches by 2020 US Presidential Candidates Joe Biden and Donald Trump. Drawing on Moral Foundations Theory (Haidt, 2013), I test the hypotheses that each candidate's moral content, as measured by the use of certain morally salient keywords, will fall along patterns based on their political affiliation. In testing these hypotheses, I also present a comparison of keyword analysis methods. The first uses a simple word count procedure alongside the Moral Foundations Dictionary 2.0, developed by Frimer et al. (2017), which scores a document based on the presence of words from each of …

Linking Conservation And Environmental Justice: Exploring Relationship-Building Between A Land Trust And Four Pacific Northwest Tribes, C. Noel Plemmons

Dissertations and Theses

Conservation organizations around the world are addressing exclusionary policies and implicit biases that have alienated segments of society from both the conservation movement and natural places. Native American tribes make up one segment of society with a particular interest in and deep ties to land and resources. Vancouver, Washington-based Columbia Land Trust recognizes tribes' special relationships with their ancestral lands and resources thereon, but has struggled to develop policies that involve tribes in conserved areas and conservation plans. The conception among mainstream scientists that western conservation science is better equipped than Indigenous ecological knowledge (IEK) to determine best practices is …

You Will Be Loved: A Mixtape, Ariana M. Rosales

Dissertations and Theses

The following mix-genre portfolio represents my work in literary translation, nonfiction, and fiction writing. These poems, essays, and stories explore the role of gender and sexuality in familial and interpersonal relationships in the social, historical, and political context of contemporary Bolivian and American cultures. The characters inhabiting this collection experience alienation while seeking belonging and meaningful connections in the face of an uncertain political future. These pieces explore themes such as marginalization of queer people, the subjugation and closeting of the indigenous in the face of mestizaje, and the colonial legacy shared by Bolivia and the United States.

What Do We Mean By Learning?, 21cleo Research Team

21CLEO Research Project Blog Posts

There is no one way a working learner interacts in the workplace to learn. Nor is there just one set of initiatives in the field that promote learning. Learning is a set of interactions that depend on the context, the conditions, the learner, and the learner's goals.

Developmental Characteristics Of Young Adolescents: Research Summary, Kathleen Brinegar, Micki M. Caskey

Curriculum and Instruction Faculty Publications and Presentations

This research summary attempts to present a fluid picture of young adolescent development that converges developmental characteristics with social identity in culturally sustaining ways.

Identifying And Prioritizing Urban And Commercial Stormwater Concerns: City Of Grants Pass, Oregon, Amie Nicole Siedlecki

Environmental Science and Management Professional Master's Project Reports

For many communities, drinking water comes from surface water sources, or source water, such as rivers and creeks. Within the city of Grants Pass, Oregon, this is the case. The Rogue River, which spans 215 miles, beginning near Crater Lake and emptying into the ocean at Gold Beach, is Grants Pass' Rogue River, in relation to drinking water, is rarely an issue for the City of Grants Pass' Public Works Department, the potential contaminant sources (PCS) from the urban, commercial, and industrial geographical areas of Grants Pass is a concern. In order to deploy treatment processes that are capable of …

Plan Para El Éxito En La Universidad Y La Carrera Profesional, Dave Dillon, Linnea Angelica Spitzer, Norma Cárdenas

PDXOpen: Open Educational Resources

Un Recurso Abierto Educativo, gratuito, Blueprint for Success in College and Career es una guía estudiantil para el éxito en la carrera y en el aula. Este texto, diseñado para enseñar cómo tener éxito en la universidad y en la preparación para una carrera, se enfoca en las técnicas de estudio, la gestión del tiempo, la exploración de la carrera, la salud y los conocimientos financieros.

Oregon's Safe Harbor For Tenants: Rocky Shoals In Eviction Diversion, Lisa K. Bates

Homelessness Research & Action Collaborative Publications and Presentations

In an effort to mitigate the impacts of the Covid-19 public health emergency, throughout 2020 and into 2021 novel public health emergency programs were initiated, including a variety of federal, state, and local ‘moratoriums’ on residential evictions for nonpayment of rent. As the moratoria began to sunset, additional ‘post-pandemic’ eviction diversion and tenant protection programs were created to buffer the ‘tsunami’ of evictions that were expected.

Oregon’s eviction diversion program, the so-called ‘safe harbor period’ for nonpayment eviction cases, was put into place in July 2021 to maintain some protections for tenants after the state moratorium on nonpayment evictions ended. …

Estimating Transport Of Diesel Particulate Emissions In The Portland Metro Using Lagrangian-Based Dispersion Modeling, Andrew Mckinley Rogers

Environmental Science and Management Professional Master's Project Reports

Air pollution from diesel combustion is a well-known and serious problem which adversely impacts human and environmental health throughout the world. One of the primary pollutants of concern from diesel combustion are the solid particles formed as a byproduct of the incomplete combustion of the diesel, also known as diesel particulate matter. As a result of the ubiquitous use of diesel-fired engines in urban environments, understanding the transport of diesel particulate matter from the exhaust is paramount in assessing human exposure to this toxic pollutant. Air dispersion modeling is one method to study how diesel particulate matter is transported and …

Stakeholder Perceptions Of Microplastics Management In Oregon, Maya Hurst-Mayr

Environmental Science and Management Professional Master's Project Reports

There is currently no federal policy in the United States that specifically addresses microplastics (MPs) pollution. However, states are beginning to act on this issue; California's SB 1422 initiates measurement of MPs in drinking water resources and Senate Bill 1263 requires the state to adopt a strategy to reduce the ecological impact of MPs in marine ecosystems. Other West Coast states like Oregon and Washington are expected to follow California's example. It is important to know what the actors who are a part of shaping MPs policy in Oregon would see as barriers and opportunities to doing so. We conducted …

Variation In Spanish/S: Overview And New Perspectives, Eva NúÑEz-MéNdez

World Languages and Literatures Faculty Publications and Presentations

The natural tendency for language variation, intensified by Spanish’s territorial growth, has driven sibilant changes and mergers across the Spanish-speaking world. This article aims to present an overview of the most significant processes undergone by sibilant /s/ in various Spanish-speaking areas: devoicing, weakening, aspiration, elision, and voicing. Geographically based phonetic variations, sociolinguistic factors, and Spanish language contact situations are considered in this study. The sibilant merger and its chronological development in modern Spanish, along with geographic expansion, have resulted in multiple contemporary dialectal variations. This historical lack of stability in these sounds has marked modern regional variations. Tracing and framing …

Building Roseburg Public Library’S Community Demographics Dashboard, Spencer Keller

Masters in GIS Practicum Reports

In a globally connected society becoming increasingly reliant on data, community GIS practitioners help bring spatial data to community organizations and other community partners in the form of data acquisition, collection, analytics, visualization, and presentation. Many Community GIS practitioners help their community partners better serve their community by harnessing the power of GIS, including community partners who advocate for and provide services to their community. Public libraries are one such service-providing entity that has been struggling in modern times, especially in rural areas. The Center for Geography Education in Oregon received grant funding in 2020 from the Institute of Museum …

Learning And Advancement: Insights From Research Partners, 21cleo Research Team

21CLEO Research Project Blog Posts

Part of our research process has been to engage the voices of individuals involved in employer-supported education and training initiatives or otherwise impacted by the issues we have been investigating. To this end, we hosted a series of convenings to discuss our findings and invited a group of 12 interested parties who represented a range of backgrounds and experience in the workforce development system to respond to our initial observations, to make sure that we are doing things that were relevant and useful, and to identify things that we had missed or that we didn't get right.

Participants in the …

Examining Perspectives Of Immigrant Working Learners & Education Providers: Crt As Analytical Framework, Jen Vanek, Kathy Harris, Gloria E. Jacobs, Jill Castek

21CLEO Presentations and Publications

Research questions in this article include:

• What supports English learners’ participation and engagement in workplace learning?

• Who gets access to learning opportunities?

• Whose workplace learning leads to advancement?
• What do the perspectives of adult working learners reveal about their education and training when viewed through a CRT lens?

A Survey Of The Solitary Native Bees Of The Leach Botanical Garden, And Their Floral Associations, Joshua Page

Biology Undergraduate Honors Theses

Solitary native bees are known to be diverse, but are not well studied in Oregon. In order to identify the bee genera present in the Leach Botanical Garden, and their floral usage, a survey was conducted over 2020 and 2021. Biweekly sampling was used to collect bees on flowers, in order to obtain floral usage data. Bees were identified to genus with published taxonomic keys. In total, 19 genera of bees were found. Bee abundance fit a normal distribution, and peaked in July. Ceratina and Lasioglossum were a significant proportion of the population, and were present in the garden from …

Database Of Marginal Notation In The Psu 1490 Codex: Objectives, Organization, And Continuation, Andi Johnson

Extra-Textual Elements

Portland State University Library's combined 1490 editions of the Fasciculus temporum and Malleus maleficarum contain over 150 individual marginal markings and notations. These marks have been made by numerous readers throughout the monograph's five-century lifespan.

This report accounts for efforts to construct a tool that would allow future students and scholars to visually compare and organize marks was needed before any in-depth analysis of readership could be made, describing the objectives, processes and applications that have defined its development. The tool that was needed was a visual database that enables the visual comparison of markings within the two texts. This …

Review, Introduction, And Preliminary Documentation Of Marginalia In Portland State University’S Fasciculus Temporum/Malleus Maleficarum Sammelband, Samuel Barnack

Extra-Textual Elements

This paper presents an overview of the contents of the new database of written marginal notations in Portland State University’s fifteenth-century printed codex, and some of the research threads that can be taken up from a study of those notations.

The motive for this project was an interest in readership usage of the codex and the two books contained within it. It begins by discussing terms that Andi Johnson and I elected to use to tag and name different categories of features, then I discuss some of the findings and possible future research avenues that can expand on them.

Finally, …

Robert Lenkiewicz: Witchcraft Collector, Ashley M. Hood

Provenance and Preservation

In 2018, Portland State University purchased a medieval codex containing a 1490 printing of Werner Rolewinck’s Fasciculus Temporum and a 1490 edition of the Malleus Maleficarum printed in Speier, Germany, by Peter Drach. Based on information from the bookseller in France, PSU has concluded that the codex most likely came from the collection of Robert Lenkiewicz (1941-2002), a twentieth-century English figurative painter who amassed a significant collection of rare books and incunables during his life.

Lenkiewicz’s artwork, interests, and book collection revolved around addiction and fanaticism, and one of the more noteworthy sections of his library focused on witchcraft and …

Sammelbände: The Many Anthologies Of Early Print, Michael Adair

Provenance and Preservation

This paper explores the meaning and context of Sammelbände incunabula, covering their place alongside other novel forms of information organization in a world of changing readership patterns, as well as their role as a response to the needs and challenges faced in the expanding and changing book trade of the early print period during the second half of the fifteenth century. It includes several appendices detailing Sammelbände known to contain early editions of the Malleus Maleficarum and Fasciculus temporum of Werner Rolewinck, and other, related works.

Bulletin: General Catalog Issue 2022-2023, Portland State University

Bulletin & Curriculum Change Documents

No abstract provided.

Data Files: Simulations In Pre-Service Child Welfare Training: Effects Of Moving From In-Person To Virtual Practice, Katie Street, Kirstin O’Dell, Kate Normand, Cassandra Anderson

Center for Improvement of Child and Family Services Datasets

No abstract provided.