Digital Commons Network^™

The Process Of Establishing A Blooming Chemistry Tool For Use In Undergraduate Chemistry Education And Research, Emryse Geye

Dissertations and Theses

While it is still common in college chemistry to assess student learning and skill with summative assessments, the CER community does not currently have a simple tool to determine and communicate whether an assessment is actually aligned with the outcomes of interest. In particular, as so-called evidence-based teaching practices and active learning strategies gain a foothold in college chemistry classrooms, the ability to communicate whether those (often labor-, cost-, and time-intensive) interventions are not only aligned with course outcomes, but also provide measurable benefit to students becomes more imperative. While college chemistry has made some strides in the area of …

Modeling And Analysing The Impact Of Heat Pump Water Heaters On Distribution Systems Using Gridlab-D, Midrar Adham

Dissertations and Theses

With the constant increase in energy demand, finding ways to reduce peak load and the energy-costs factors has become more imperative. Domestic water heating showcases a significant opportunity for such applications. Water heating is the second-highest energy consumer in the residential sector across the United States. Electric Water Heaters (EWHs), in particular, constitute nearly 43% of American household water heating energy consumption. Heat Pump Water Heater (HPWH), on the other hand, is an advanced water heating technology that has recently emerged in the United States residential market.

The objectives of this work are to develop a HPWH model and build …

A Privacy-Preserving Strategy For The Trust Layer Of The Energy Grid Of Things Distributed Energy Resource Management System, Mohammed Abdullah Alsaid

Dissertations and Theses

Emergent from the shadows of the traditional grid flaws, the Smart Grid (SG) idea was born and led by government mandates toward cleaner energy production. The SG represents the next generation of electricity distribution systems that subsume recent technological innovations. It uses digital communication between its components and entities to attain more automation, self-sufficiency, and reliability. Unfortunately, this relatively new concept is not flawless; the intrinsic reliance on increased digital communication spreads open attack paths for adversaries. Therefore, finding solutions that address information exchange vulnerabilities has become imperative.

The Energy Grid of Things (EGoT) is Portland State University's implementation of …

Public History Is Now, Sarah E. Dougher

Amplify: A Journal of Writing-as-Activism

A walking tour of downtown Portland in August 2021 raises questions for the writer about the purpose of “memory activism,” its relation to writing-as-activism. Drawing on critiques of urbanist Jane Jacobs and interrogating the concept of “reckoning,” the essay explores ways in which the streetscape and people there can deliver meaning and pose questions about systemic racism and unsheltered existence.

Gentle Action Theory As A Method Of Deliberative Democracy In Addressing The Lack Of Voice For Indigenous Students In Institutions Of Higher Education, Carma J. Corcoran

Amplify: A Journal of Writing-as-Activism

This paper examines how Indigenous college students attending non-tribal colleges and universities in the United States experience feelings of alienation and marginalization. The concept of democracy and deliberation from the model of the larger oppressive society is not a cultural norm. Civic engagement is experienced differently in Indigenous communities. This paper articulates the outcomes of a deliberative forum which examined the concept of democracy employing Gentle Action Theory as the method to provide the students an opportunity to share their thoughts and experiences and to express their frustrations and needs regarding their academic endeavors. The comparison of Traditional Ways and …

A Distributed Trust Model Simulator For Energy Grid Of Things Distributed Energy Resource Management System, Abdullah Barghouti

Dissertations and Theses

The evolution of networks into more distributed, self-reliant nodes has mitigated single-point failures that plagued traditional centralized networks. Applied to power grids, distributed systems can increase the integrity and availability of grid services while also offering a power management solution. However, while distributed networks provide scalability, security, and sustainability compared to centralized networks, their distributed nature makes them harder for anomaly detection and prevention. Incorporating a Distributed Trust Model (DTM) System into an Energy Grid of Things Distributed Energy Resource Management System (EGOT DERMS) allows grid participants to be characterized and their communication to be analyzed for possible attacks. A …

Development Of A Configurable Derms Test System In Gridapps-D, Sean James Keene

Dissertations and Theses

Distributed Energy Resources and their increased penetration within the power grid are a suitable method to provide essential reliability services. In order to do so, they must operate in aggregate. Aggregation of a wide variety of systems with varying standards and protocols is a complex task, which could benefit from rules and standards to support interoperability. To this end, the Portland State University Power Lab has developed the Energy Grid of Things project, which includes a Distributed Energy Resource Management System to provide aggregation and demonstrate the usage of an Energy Services Interface: a set of rules governing the interface …

Framing The Green New Deal And Climate Change: A Content Analysis Of The New York Times And The Wall Street Journal, Danielle Elizabeth Duffy

Dissertations and Theses

The importance of climate change recognition and need for action cannot be overstated. Climate change has historically been a partisan issue with an almost hyper focus on the (un)certainty of science, the need for action within a particular timeframe, and the cost of tackling the issue. With the contemporary relevance and salience of climate change, this content analysis explores emerging framing patterns in coverage of the Green New Deal and subsequent climate change references within news articles from the New York Times and Wall Street Journal in 2019. Frame typology from O'Neill et al. (2015) is used to explore the …

Analyzing Classroom Discourse To Investigate Structuring Equitable Mathematical Talk In Small Groups And Whole-Class Discussions, Brittney Marie Ellis

Dissertations and Theses

Shifting classroom discourse to be more student-centered has become an integral part of reform-oriented instructional practices. At the same time, shifting discourse can open up opportunities for inequity to occur in the immediate learning environment as both the quantity and quality of mathematical talk changes. In this project, I examined complexities involved in such settings by using discourse analysis methods to explore the positioning of students relative to mathematics content and each other's mathematical ideas. First, I analyzed the ways teachers' discourse during group work enactments related to established equitable teaching practices. Findings from this study suggest communicating group tasks …

Stoneware And Earthenware From The Beeswax Wreck: Classification Of The Dubé Collection And Discussion Of The Interpretation Of The Materials In Protohistoric Sites, Vanessa Renee Litzenberg

Dissertations and Theses

Over the past three centuries, items from the Beeswax Wreck have been discovered on Oregon's northern coastline near Manzanita, including stoneware and earthenware fragments. While the stoneware and earthenware were not noticed by beachcombers washing ashore until more recently, similar artifacts have been noted within Indigenous sites for decades. While most of the analysis of the artifacts found in protohistoric settings are used to provide proof of a wreck or potentially a marker of the start of the contact period, this study aims to provide some context to the stoneware and earthenware sherds related to the wreck. The goal was …

Toward Analyzing The Diversity Of Extractive Summaries, Aaron David Hudson

Dissertations and Theses

As the amount of text generated across the internet continues to increase, developing methods for processing that text to glean valuable insights is paramount. Automatic text summarization is one such method that aims to provide a concise and representative summary of input text, allowing users access to the most salient points from a large amount of textual data. However, in working with these summaries, especially those generated from social media data, questions arise about not only the quality of a summary, but also its ability to reflect the diversity of user perspectives. This work examines the quality of summaries with …

Treatment Disparities In Emergency Medical Services: The Influence Of Race/Ethnicity, Obesity, And English Proficiency, Jamie Kennel

Dissertations and Theses

Different treatment in healthcare settings provided to different social groups of people may lead to disparities in health, quality of life, and life span. Despite the critical role among healthcare services that Emergency Medical Services (EMS) provides disproportionately for marginalized communities, it remains unclear if and to what extent treatment disparities take place in the pre-hospital setting. Guided by the theoretical frameworks of social worth, aversive racism, and stigma, this study utilizes medical chart data from three different public and private datasets to investigate treatment disparities by Emergency Medical Service providers for racial minority, obese, and limited English proficiency patients. …

"Damn, Man. The Time That I Lost": Power And The Process Of Diagnosis For Women With Chronic Illnesses, Kaitlin Roquel Yeomans

Dissertations and Theses

Historical sociological research on people with chronic illness has examined their navigation of their lives post-diagnosis. Diagnosis has been considered with regard, not to its process, but rather to its definitions. While a rich literature has been produced by such approaches, how people experience the process of diagnosis has largely been ignored. This research looks at the process of diagnosis as a series of moments, all of which hold specific meaning in the interactional context of the patient-provider relationship. Looking at diagnosis from the patient’s perspective demonstrates how information about health and illness is exchanged, navigated, and negotiated. Importantly, this …

Engaging Public Health Critical Race Praxis In Local Social Determinants Of Health Research: The Youth Health Equity And Action Research Training Program In Portland, Or—Yheartpdx, Ryan J. Petteway, Lourdes Gonzalez

OHSU-PSU School of Public Health Faculty Publications and Presentations

The social determinants of health (SDH) have long been considered a core mechanism through which racial health inequities are (re)produced and incubated in the U.S. Moreover, scholars have expressly—and appropriately—named structural racism as a precursor to inequities associated with SDH. However, while research on racial health inequities—SDH-related or otherwise—continues to grow, communities of color remain grossly underrepresented as public health researchers and practitioners. Additionally, although SDH are experienced in a very local sense, much research and practice fails to more deeply and thoroughly engage and center local community knowledges. Thus, much work around SDH and racial health inequities presents, ironically, …

A Letter Writing Assignment For Leadership Development: Creating Stakeholder Connection For Policy Advocacy, Candace Bloomquist, Carly Speranza, Daneen Bergland, Kerry K. Fierke

University Studies Faculty Publications and Presentations

The purpose of this article is to share with leadership educators a writing exercise designed to provide doctoral students enrolled in an Administrative and Policy Leadership course an opportunity to gain experience with building collective will for policy advocacy on a social justice issue. This article describes the use of a letter writing assignment including the background and justification for using letter writing rather than other forms of writing across the curriculum, instructions for students to complete the assignment, and examples and ideas for grading and providing constructive and instructive feedback to leadership students. The article concludes with recommendations and …

Common Ground, Cooperation, And Recipient Design In Human-Computer Interactions, Judit Dombi, Tetyana Sydorenko, Veronika Timpe-Laughlin

Applied Linguistics Faculty Publications and Presentations

In recent years, the number of human-machine interactions has increased considerably. Additionally, we have evidence of linguistic differences between human-machine interactions and human–human conversations (e.g., Timpe-Laughlin et al., 2022). Therefore, it is reasonable to revisit theoretical frameworks that conceptualize interactional language use and investigate to what extent they still apply to technology-mediated interactions. As a first attempt at exploring whether pragmatics theories apply to human-machine interaction, we examined how well Kecskés's (2013) socio-cognitive approach (SCA) focusing on asymmetric interactions (e.g., between interlocutors of different language backgrounds) applies to the asymmetry of human-machine interactions.

Using examples from experimental data, we present …

Technology Roadmap For Standards Of Healthcare Data Cyber Security: Influence Of Public Policy On Consumer Healthcare Cyber Security Protections, Alison Nalven, Courtney Wright, Jennifer Lynn Zeitouni, Nolan Thompson, Sara Ferdousi, Saumya Saxena

Engineering and Technology Management Student Projects

From the dot com boom to now the Internet of Things (IoT) and Machine Learning era, the evolving digital world that people live in has brought new challenges for protecting personal data and information. IoT devices, smart phones, numerous apps, and more, constantly collect personal health data with many positive intentions. However, the recent overturning of Roe vs. Wade by the United States Supreme Court has generated concerns in particular on who and how personal health data can be used by both governments and private companies with unintended consequences for users. Cyber security and regulations for protecting personal health data …

Ssita: Seal Serving Institutional Transformation Assessment: Excelencia In Education & Portland State University, Cynthia Carmina Gómez, Oscar Fernandez, Cristina Herrera, Emanuel Magaña, Allyson Meyers, Perla Pinedo, Rebecca Rodas, Tanya Sanchez

Global Diversity and Inclusion Publications and Presentations

In the Spring of 2022, Portland State University was invited to participate in Excelencia in Education’s pilot Seal Serving Institutional Transformation Assessment or SSITA. This SSITA report is a preliminary institutional assessment of Portland State University’s (PSU) efforts to intentionally serve Latiné students and advance degree completion. Between now and June 2023, a committee of faculty, staff, and students will lead the effort to complete a Seal of Excelencia application. We will reach out to all parts of the institution to gather additional information, data, and stories about how units serve our growing Latiné student population. The next round of …

Convening On The Future Of Black Thriving & Joy, Office Of The President, Portland State University, Justice Oregon For Black Lives

Global Diversity and Inclusion Publications and Presentations

This co-creation event aims to be an asset-based intergenerational, inter-ideological, and intercultural opportunity for listening, shared learning, and recognition of points of synergy and opportunity across the rich complexity of the black community in our area -- resulting in a shared agenda and momentum for action.

This affinity/identity based/closed event focuses on the black community and is part of a series of conversations with the different BIPOC communities as stated in the Time to Act plan created as a result of the October 2020 Time to Act summit. As a result of these conversations, Portland State University is seeking to …

Gis Training In Transportation And Environmental Justice For Promoting Student Success In Steam Education, Joowon Im, Alan Klein, Amruta Sakalker

TREC Final Reports

Transportation land uses have a significant impact on vulnerable ecologies, especially in a rapidly urbanizing region like Dallas-Fort Worth. To study this relationship, the research team will develop a pilot ArcGIS lab course to expose high school students to critical regional tools and technology. This course will demonstrate the connections between transportation planning and design and environmental justice. The College of Architecture Planning and Public Affairs at UT Arlington will partner with CityLab high school in the Dallas Independent School District to develop a four-week lab course curriculum in ArcGIS and other emerging regional mapping technologies.

High school students will …

Mobility For The People: Evaluating Equity Requirements In Shared Micromobility Programs, Anne Brown, Amanda Howell, Hana Creger

TREC Final Reports

Technology-enabled shared micromobility services have expanded mobility for some travelers, but significant barriers to use limit their uptake among certain groups. To address these barriers, cities and professional transportation organizations have undertaken two distinct efforts to operationalize equity in shared micromobility services: 1) drafted equity frameworks in an attempt to clearly define equity within the transportation context and to provide guidelines for what cities should consider when designing equity-based mobility programs; and 2) some cities have attempted to ameliorate access disparities by establishing new requirements for shared micromobility programs. Both equity frameworks and program requirements mark important steps to operationalizing …

Parent Attitudes Towards Childhood Vaccines After The Onset Of Sars-Cov-2 In The United States, Douglas J. Opel, Anna Furniss, Chuan Zhou, John D. Rice, Heather Spielvogle, Christine Spina, Cathryn Perreira, Jessica Giang, Jeffrey D. Robinson, Multiple Additional Authors

Communication Faculty Publications and Presentations

Objective: To understand the influence of a novel infectious disease epidemic on parent general attitudes about childhood vaccines.

Methods: We conducted a natural experiment utilizing cross-sectional survey data from parents of infants in Washington and Colorado participating in a larger trial that began on September 27, 2019. At enrollment, parents completed the short version of the Parental Attitudes about Childhood Vaccines (PACV-SF), a validated survey scored from 0-4, with higher scores representing more negative attitudes. The exposure variable was onset of the SARS-CoV-2 pandemic in the US, with the before-period defined as September 27, 2019 –– February 28, …

Reimagine Fire Science For The Anthropocene, Jacquelyn K. Shuman, Jennifer K. Balch, Rebecca T. Barnes, Philip E. Higuera, Andres Holz, Multiple Additional Authors

Geography Faculty Publications and Presentations

Fire is an integral component of ecosystems globally and a tool that humans have harnessed for millennia. Altered fire regimes are a fundamental cause and consequence of global change, impacting people and the biophysical systems on which they depend. As part of the newly emerging Anthropocene, marked by human-caused climate change and radical changes to ecosystems, fire danger is increasing, and fires are having increasingly devastating impacts on human health, infrastructure, and ecosystem services. Increasing fire danger is a vexing problem that requires deep transdisciplinary, trans-sector, and inclusive partnerships to address. Here, we outline barriers and opportunities in the next …

The Case For Mandatory Reporting As An Ethical Dilemma For Social Workers, Sam Harrell, Stéphanie 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 …

The Average Number Of Divisors In Certain Arithmetic Sequences, Liubomir Chiriac

Mathematics and Statistics Faculty Publications and Presentations

In this paper we study the sum p≤xτ(np), where τ(n) denotes the number of divisors of n, and {np} is a sequence of integers indexed by primes. Under certain assumptions we show that the aforementioned sum is x as x → ∞. As an application, we consider the case where the sequence is given by the Fourier coefficients of a modular form.

An Essential Role For Tungsten In The Ecology And Evolution Of A Previously Uncultivated Lineage Of Anaerobic, Thermophilic Archaea, Steffen Buessecker, Marike Palmer, Dengxun Lai, Joshua Dimapilis, Xavier Mayali, Damon Mosier, Jian-Yu Jiao, Daniel R. Colman, Anna-Louise Reysenbach, Multiple Additional Authors

Biology Faculty Publications and Presentations

Trace metals have been an important ingredient for life throughout Earth’s history. Here, we describe the genome-guided cultivation of a member of the elusive archaeal lineage Caldarchaeales (syn. Aigarchaeota), Wolframiiraptor gerlachensis, and its growth dependence on tungsten. A metagenome-assembled genome (MAG) of W. gerlachensis encodes putative tungsten membrane transport systems, as well as pathways for anaerobic oxidation of sugars probably mediated by tungsten-dependent ferredoxin oxidoreductases that are expressed during growth. Catalyzed reporter deposition-fluorescence in-situ hybridization (CARD-FISH) and nanoscale secondary ion mass spectrometry (nanoSIMS) show that W. gerlachensis preferentially assimilates xylose. Phylogenetic analyses of 78 high-quality Wolframiiraptoraceae MAGs from …

Legislative Procedures And Perceptions Of Legitimacy, Megan Elizabeth Cox

Dissertations and Theses

While mechanisms of legitimacy development have been extensively studied in governments as a cohesive whole, procedural legitimation of the legislative branch has not been explored. Using a procedural justice framework to identify indicators of openness in legislative rules, this paper theorizes that the presence or absence of these indicators will be the key factor in public perceptions of legitimacy of the legislature. This paper hypothesizes that where more indicators are present, a legislature will be viewed as more legitimate by its citizens as compared to a legislature with fewer indicators.

Comparing Indonesia and the Philippines, two presidential democracies in Southeast …

A Critical Discourse Analysis Of How Youth In Care Describe Social Support, Jared Israel Best

Dissertations and Theses

There are nearly 422,000 youth in foster care in the United States with 20,000 aging out each year. Youth who age out of care demonstrate worse outcomes in all areas (education, employment, homelessness, justice system involvement, and social support) compared to the general population. These outcomes represent an ideological production, or a production of knowledge regarding the discursive youth in care. Thus, dominant discourses of youth are informed and constitutive of these problematic outcomes. Similarly, youthhood is dominantly defined by risk and informed by peer groups and social relationships. This study presents findings from interviews with 22 youth preparing to …

Erasure Through Engagement: The Community Resettlement Of Isle De Jean Charles, Meghan Elizabeth Sullivan

Dissertations and Theses

The State of Louisiana and the national media have claimed that the community resettlement of Isle de Jean Charles (IDJC) is an example of a 'model resettlement' for communities experiencing the impacts of climate change. At the outset, the project was advocated and led by the tribal leadership of the Isle de Jean Charles Band of the Biloxi-Chitimacha-Choctaw Tribe. Although, through the course of the resettlement the supposed partnership between the State of Louisiana and the Tribe has dissolved. This study seeks to provide a robust and in-depth understanding of the planning and implementation process of the IDJC resettlement to …

The Role Of The Gut-Brain Axis In Alzheimer's Disease: A Narrative Review, Leila Karout

University Honors Theses

The importance of the gut microbiome in health has become increasingly recognized as more research points to the strong association between an imbalanced gut microbial composition and a diseased state. Alzheimer's Disease burdens millions, and the rate of growth is expected to increase. However, current treatment methods are less than ideal and do not offer a substantial benefit to patients' quality of life. Additionally, there are gaps in the current understanding of Alzheimer's Disease pathogenesis. Research on the relationship between gut microbiota and neurodegeneration provides a different perspective on the pathogenesis and treatment methods for dementia, such as Alzheimer's Disease. …