Digital Commons Network^™

Understanding Quadrature Modulation By Designing A 7mhz Iq Test Bench To Encode The Polybius Square, William Lee Bradley

Dissertations and Theses

This thesis outlines the design of an IQ Test Bench that allows for experimentation of quadrature modulation techniques. Quadrature modulation utilizes two signals I and Q, 90° out of phase from each other, to greatly increase communication data rates. Using Desmos, a thorough mathematical analysis of waveform mixing is presented, and constellation diagrams are plotted from the results. From this an ancient fire signaling technique known as the Polybius Square is encoded into the system. The IQ Test Bench is built from fundamental components that would be contained within an RFFE: a local oscillator and two frequency mixers. The LO …

Deep Structure Of Siletzia In The Puget Lowland: Imaging An Obducted Plateau And Accretionary Thrust Belt With Potential Fields, Megan L. Anderson, Richard J. Blakely, Ray E. Wells, Joe D. Dragovich

Geology Faculty Publications and Presentations

Detailed understanding of crustal components and tectonic history of forearcs is important due to their geological complexity and high seismic hazard. The principal component of the Cascadia forearc is Siletzia, a composite basaltic terrane of oceanic origin. Much is known about the lithology and age of the province. However, glacial sediments blanketing the Puget Lowland obscure its lateral extent and internal structure, hindering our ability to fully understand its tectonic history and its influence on modern deformation. In this study, we apply map-view interpretation and two-dimensional modeling of aeromagnetic and gravity data to the magnetically stratified Siletzia terrane revealing its …

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

Faculty Senate Monthly Packets

The February 5, 2024 monthly packet includes the February agenda, appendices, and the Faculty Senate minutes and attachments from the meeting held February 5, 2024.

Brief Communication: Recent Estimates Of Glacier Mass Loss For Western North America From Laser Altimetry, Brian Menounos, Caitlyn Forentine, Alex A. Gardner, Andrew G. Fountain

Geology Faculty Publications and Presentations

Glaciers in western North American outside of Alaska are often overlooked in global studies because their potential to contribute to changes in sea level is small. Nonetheless, these glaciers represent important sources of freshwater, especially during times of drought. Differencing recent ICESat-2 data from a digital elevation model derived from a combination of synthetic aperture radar data (TerraSAR-X/TanDEM-X), we find that over the period 2013–2020, glaciers in western North America lost mass at a rate of 12:3+3:5 Gt yr^-1. This rate is comparable to the rate of mass loss (11:71:0 Gt yr1) for the period 2018– 2022 calculated …

Improved Subseasonal Prediction Of South Asian Monsoon Rainfall Using Data-Driven Forecasts Of Oscillatory Modes, Eviatar Bach, Venkat Krishnamurthy, Safa Mote, Jagadish Shukla, A. Surjalal Sharma, Eugenia Kalnay, Michael Ghil

Mathematics and Statistics Faculty Publications and Presentations

Predicting the temporal and spatial patterns of South Asian monsoon rainfall within a season is of critical importance due to its impact on agriculture, water availability, and flooding. The monsoon intraseasonal oscillation (MISO) is a robust northwardpropagating mode that determines the active and break phases of the monsoon and much of the regional distribution of rainfall. However, dynamical atmospheric forecast models predict this mode poorly. Data-driven methods for MISO prediction have shown more skill, but only predict the portion of the rainfall corresponding to MISO rather than the full rainfall signal. Here, we combine state-of-the-art ensemble precipitation forecasts from a …

Active Transportation Counts From Existing On-Street Signal And Detection Infrastructure, Sirisha Kothuri, Patrick Allen Singleton, Mahyar Vahedi Saheli, Elizabeth Yates, Joseph P. Broach

Civil and Environmental Engineering Faculty Publications and Presentations

This study’s objective was to use data from existing traffic signal infrastructure to estimate pedestrian volumes. Pedestrian push-button actuations were collected from signal controller logs at 49 intersections in western Oregon and an additional 16 intersections in eastern Oregon. These actuations were then compared to observed pedestrian counts, totaling over 34,000 people, obtained from video recordings. After exploring various options, a simple quadratic relationship was modeled using a single measure of pedestrian signal activity: the number of push-button presses (filtered to remove multiple presses within 15 seconds). The model’s predictions showed a correlation of 0.86 with observed pedestrian volumes and …

A Framework For Deepening Racial Equity In Prenatal-Grade Three Systems: Lessons From A 10-Year Reflective Case Study, Beth L. Green, Lindsey B. Patterson, Caitlin R. Houser

Center for Improvement of Child and Family Services Publications

This paper uses a reflective, retrospective case study methodology to analyze data from a 10-year University-Community partnership focused on supporting implementation and improvement of a Prenatal-Grade 3 (P3) system in an elementary school. Using a framework for centering equity in Collective Impact approaches, we analyze the steps we took as research partners/program evaluators to address racial and other inequities while highlighting missed opportunities to better center racial equity in the evaluation and P3 Initiative work. Through our analysis, we seek to identify where and how racial inequities surfaced, to describe how systemic racism influenced the evaluation and P3 Initiative process, …

The Pacific Sentinel, February 2024, Portland State University. Student Publications Board

The Pacific Sentinel

Editor: Eva Sheehan

Articles in this issue include:

• Earth Mama
• Spotlighting Black Artists Through a Mix of Mediums
• The Dresden Dolls in Portland: A Punk Cabaret
• Let Knowledge Serve the City
• Artificial Intelligence
• Surviving Seasonal Struggles
• What We're Enjoying
• Events Calendar & Extras

Inclusive Approaches For Measuring Demographics Of Underrepresented Populations In Stem And Biomedical Research Training Programs, Stephanie E. Paris, Alexis Dinno, Mollie C. Marr, Aaron Raz Link, Brandy L. Lentz, Gwen Shusterman, Jerian Abel, Kristen Harrison, James Hook, Dawn M. Richardson, Multiple Additional Authors

OHSU-PSU School of Public Health Faculty Publications and Presentations

As federal strategic plans prioritize increasing diversity within the biomedical workforce, and STEM training and outreach programs seek to recruit and retain students from historically underrepresented populations, there is a need for interrogation of traditional demographic descriptors and careful consideration of best practices for obtaining demographic data. To accelerate this work, equity-focused researchers and leaders from STEM programs convened to examine approaches for measuring demographic variables. Gender, race/ethnicity, disability, and disadvantaged background were prioritized given their focus by federal funding agencies. Categories of sex minority, sexual (orientation) minority, and gender minority (SSGM) should be included in demographic measures collected by …

A Time Synchronized Multi-Hop Mesh Network With Crystal-Free Nodes, Filip Maksimovic, Austin Patel, David C. Burnett, Thomas Watteyne, Kristofer S.J. Pister

Electrical and Computer Engineering Faculty Publications and Presentations

In this work we propose and demonstrate a protocol for a time synchronized channel hopping mesh network for wireless transceivers that use exclusively imprecise and inaccurate on-chip oscillators. This protocol is built on an IEEE 802.15.4 physical layer radio that enables interoperability with protocols such as 6TiSCH or Thread. A calibration-bootstrapped multi-hop mesh network is demonstrated with a single crystal-enabled node acting as the root. The protocol is designed to create a multi-hop mesh while compensating noisy and drifting oscillators and timers. With a 4 s synchronization period, an experimental implementation of the network maintains, in the worst case, 1.8 …

2020 Racial Justice Protests In Portland, Or: An Analysis Of Radical Place-Making And Police Tactics In A Neighborhood Context, Claire Brumbaugh-Smith

Dissertations and Theses

During the George Floyd protests, police used tactics infrequently seen until now, including the use of tear gas and sonic weapons in contested spaces. Police tactics are presumably sanctioned by policing directives, but little is known about how these tactics may vary across space at a granular spatial level, or how they might be normalized over time. To address this knowledge gap, I used the concept of repertoires of protest control to characterize and quantify the tactics of the Portland Police Bureau (PPB) deployed on racial justice protesters during the 2020 racial justice protests and describe the role of these …

Individual And Structural Contributors To Implicit And Explicit Anti-Muslim Bias In The United States, Aeleah M. Granger

Dissertations and Theses

This dissertation consists of two manuscripts addressing the multifaceted nature of Islamophobia in the United States by examining explicit and implicit anti-Muslim bias on individual and structural levels. The first manuscript tests an ideology-threat-attitude-behavior model by estimating the simultaneous mediating effects of threat perceptions on the relationships between individual differences in ideology, Islamophobia (fear of Muslims), and support for an anti-Muslim police surveillance policy. This study (N = 603) finds that individuals who are higher in Social Dominance Orientation (SDO), Right-wing Authoritarianism (RWA), and Nationalism are more likely to perceive Muslims as realistic (power), symbolic (value), and terroristic (safety) …

Five-Step Guide To Writing About African Children: A Satirical Homage To Decolonizing Our Minds And Challenging Stereotypes, Randall Yesmont, Bright Alozie

Black Studies Faculty Publications and Presentations

This essay is a work of satire, in the style of the late Binyavanga Wainaina’s “How to Write About Africa” and Bright Alozie’s “How to Write About Nigeria” and “How to Write About African Women.” In this satirical homage, we explore the pesky stereotypes that often accompany Western perceptions and writings about African children. We hope that stereotypes satirically highlighted in this piece shed light on the dangers of a single story while advocating for the recognition of the humanity, agency, voices, and dignity of African children.

Sustainable Leadership During Turbulent Times, Paul Marietta

Dissertations and Theses

Teachers, administrators, and staff in schools are leaving the profession at unprecedented rates. The principal pipeline has significantly decreased in the past years and our public school system is at a breaking point. Now more than ever, we need to focus on sustainable leadership during turbulent times and helping the organization, students, families, teachers-and also their leaders-thrive. This dissertation proposal follows the Portland State University (PSU) multi-paper format which comprises a compilation of three papers in a journal article style format, with sole or multiple authors, and although PSU policy does not require it, the topic of the papers in …

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

Faculty Senate Monthly Packets

The January 8, 2024 monthly packet includes the January agenda, appendices, and the Faculty Senate minutes and attachments from the meeting held January 8, 2024.

Implementation Profile: Modeling Environment (Doe-Psu-0000922-3), Sean Keene, Midrar Adham, Robert B. Bass

Electrical and Computer Engineering Faculty Publications and Presentations

This implementation profile provides the scope, background, and requirements necessary to implement a Modeling Environment (ME) to test a Distributed Energy Resource (DER) Management System (DERMS). A DERMS is used by an aggregator to dispatch large numbers of DERs in order to provide grid services to a Grid Operator. The ME addresses scalability issues inherent to Hardware-in-the-Loop DERMS simulation; a large number of assets are needed in order to observe effects on the grid from deployment and dispatch of DERs.

Implementation Profile: Egot Derms Server/Client System (Doe-Psu-0000922-2), Tylor Slay, Robert B. Bass

Electrical and Computer Engineering Faculty Publications and Presentations

This implementation profile (IP) provides the scope and requirements necessary to implement a distributed energy resource management system (DERMS), which networks large numbers of DER within an energy grid of things (EGoT). This document originated as part of a U.S. DOE-funded project to develop a DERMS based on a set of rules known as the Energy Services Interface (ESI). The ESI serves as an umbrella, ensuring the information exchange between an aggregator and DER owners conforms to expectations: protect privacy, provide security, develop trustworthiness, and ensure interoperability. DERMS developers use the ESI to ensure that information exchange meets these expectations. …

Product Specification: Distributed Trust Model System (Doe-Psu-0000922-4), Narmada Sonali Fernando, Abdullah Barghouti, Robert B. Bass, John M. Acken

Electrical and Computer Engineering Faculty Publications and Presentations

A Distributed Trust Model (DTM) System is a supervisory component within an energy grid of things. The role of a DTM System is to implement the trust aspects of an energy services interface. The DTM System augments existing security measures by monitoring the communication between the various EGoT System actors and quantifying metrics of trust of each actor.

Product Specification: Distributed Control Module (Doe-Psu-0000922-5), Nicole Henderson, Kai Zeng, Robert B. Bass

Electrical and Computer Engineering Faculty Publications and Presentations

This product specification describes the architecture, implementation, and hardware descriptions of a Distributed Control Module (DCM) prototype. A DCM is an enabling technology for distributed energy resources (DER). DERs are grid-enabled generation, storage, and load devices that are owned by utility customers. DCMs enable information exchange between a distributed energy resource management system (DERMS) and DERs for the purpose of networking large numbers of DERs. The DCM prototype described within this document enables DER participation in a service-oriented aggregation system. A DERMS server provides IEEE 2030.5 smart energy resource services to DCM clients using a request/response information exchange process. DCMs …

Psu Derms Operating Manual And Egot System Reference (Doe-Psu-0000922-7), Tylor Slay, Robert B. Bass

Electrical and Computer Engineering Faculty Publications and Presentations

This document guides the user of the Portland State University Distributed Energy Resource Management System in configuration and normal operation. For direct access to the underlying code and its usage see the accompanying PSU EGoT System Reference. The system reference outlines all classes and methods used through the Energy Grid of Things system including applications, models, interfaces and the entity component system.

Energy Services Interface (Doe-Psu-0000922-1), Robert B. Bass

Electrical and Computer Engineering Faculty Publications and Presentations

This document defines a set of rules known as the Energy Services Interface (ESI), which “establish a bi-directional, service-oriented, logical interface to support secure, trustworthy information exchange between an aggregator and distributed energy resources (DERs). These exchanges facilitate energy interactions between the DERs and the aggregator, thereby allowing the aggregator to provide grid services through dispatch of the DERs.” The ESI serves as an umbrella, ensuring the information exchange between an aggregator and DER owners conforms to expectations: protect privacy, provide security, develop trustworthiness, and ensure interoperability. DERMS developers use the ESI to ensure that information exchange meets these expectations.

Microsoft Access To Sqlite Database Migration For Existing Forest Management Software: Methods And Considerations, Drue Kathryn Lindstrom

Masters in GIS Practicum Reports

Bioregional Inventory Originated Simulation Under Management (BioSum) is software from the US Forest Service’s Forest Inventory and Analysis (FIA) program. It is a complex analysis framework that models and evaluates forest management treatments across multi-decade timeframes. Originally written to work with Microsoft Access databases, BioSum is migrating to the use of SQLite as its database engine. The final module of BioSum, Treatment Optimizer, is the first one to be converted so the changes can be implemented incrementally. This practicum report outlines a workflow for converting the database engine of an existing program from Microsoft Access to SQLite with the example …

Indigenous Assimilation And Progressive Mirages: The Globalization Of American Narratives Of Educational Reform, Madhu Narayanan

Educational Leadership and Policy Faculty Publications and Presentations

In 1928, the Institute for Government Research released the Meriam Report, a massive study of the nation’s Native Americans. Unflinchingly rational, the report criticized federal policy, but it also set a high-minded vision for Native American progress. Celebrated by the press at the time, hailed by historians in the following decades (Bertolet, 2007; Kelly, 1983, Philp, 1977, Szasz, 1974; Downs, 1945), the report became perceived as a turning point in the treatment of Native Americans and signaled a renewed faith in government. A century later, these reforms appear as mirages. In this paper, I show how the Meriam Report cloaks …

Portland State University Economic And Social Impact Study 2024, Jenny H. Liu, Hyeoncheol Kim

Northwest Economic Research Center Publications and Reports

Portland State University (PSU) serves as a vital economic and social engine for the Portland metropolitan area and the state of Oregon. With more than 20,000 students enrolled across eight distinctive colleges and schools, offering more than 200 degree and certificate programs, and employing a total workforce exceeding 3,500, PSU contributes significantly to economic, social and community vibrancy through its core educational, research and engagement activities. This study examines PSU’s economic and social contributions, educational outcomes, research activities and community engagement initiatives through both quantitative and qualitative analyses to provide a multifaceted view of the university’s impact.

Geographically, this study …

Engram, Vol. 3 2024, Portland State University. School Of Art + Art History + Design

Engram: A Journal of Art History Student Writing

• Foreword, Angela Griffin

• The Emperor’s Old Clothes: Textile as a Tool for the Emperor in the Later Byzantine Empire, Lila Durrett

• The Virgin of Vladimir’s Impact on Medieval Russian History, Maisy Holt

• Rethinking Gender Essentialism in Art Historical Discourse around the Oeuvre of Judith Leyster, William Herbert Holt III

• The Allegories of Rubens and Brueghel the Elder’s The Sense of Touch, Molly Schwartzman

Bulletin: General Catalog Issue 2024-2025, Portland State University

Bulletin & Curriculum Change Documents

No abstract provided.

Afro-Latin Americans Living In Spain And Social Death: Moving From The Empirical To The Ontological, Ethan Johnson, Joy González-Güeto, Vanessa Cadena

Black Studies Faculty Publications and Presentations

This paper has three objectives. First, we establish that although Spain has attempted to distance itself from its role in the sub-saharan African slave trade and the significance blackness plays within its borders, there exists a significant population of people of African descent from Latin America living in Spain. Second, we show Black people are living what Sadiyah Hartmann refers to as the afterlife of slavery in Latin America. We claim it is worthwhile to take into account that Afro-Latin Americans are fleeing to the country that is largely responsible for them being in Latin America and the conditions of …

The Intersection Of Asset Management And Geographic Information Systems For University Facilities Maintenance, Andrew Westerlund Beland

Masters in GIS Practicum Reports

This project describes a proof of concept for developing a digital asset management system dashboard for water backflow assemblies at Portland State University (PSU) using a modified ESRI ArcGIS Online backflow solution. Asset management is crucial for optimizing the lifecycle of tangible assets, which ensures cost-effective operational efficiency and regulatory compliance. PSU manages over 250 backflow assemblies spread across the 50-acre campus and has traditionally relied on manual processes, which can lead to inefficiencies and potential transcription errors.

The system links spatial data with asset attributes for backflow devices, enabling field staff to update inspection results directly from mobile devices. …

Training Practitioners For Real-Time Product Development Using Generative Artificial Intelligence, Antoine J. Jetter, Ameeta Agrawal, Dahm Mongkol Hongchai, Charles Weber, Yufei Tao

Engineering and Technology Management Faculty Publications and Presentations

A workshop to train practitioners in real-time new product development (NPD) using generative artificial intelligence (AI) was conducted. Three teams of graduate students in Engineering and Technology Management (many with work experience as managers and engineers) were given minimalist instructions to develop a product concept and a preliminary marketing plan for a product of their choosing within six hours using ChatGPT, search engines, and other Internet-based tools. The product was to be novel, and the plan was to include customer identification, market analysis, generating personas, and a 15-minute presentation at the end of the workshop. The goal was to 'inspire …

Subvert The Dominant Paradigm: Reimagining Academic Library Hiring Processes, Xan Arch, Isaac P. Gilman

Library Faculty and Staff Publications and Presentations

For libraries dedicated to diversity, equity, and inclusion, it is crucial to address firmly-held traditions about “correct” hiring practices. This work of revising traditional practices can be a fraught process, as different stakeholders often hold strong opinions about how best to evaluate candidates and conduct successful searches. To move our two academic libraries toward more inclusive hiring practices, we each led internal processes to entirely revise our hiring manuals. We will discuss the challenges and core issues addressed through this work, and the resulting principles that we believe will result in a more equitable, transparent, and candidate-friendly process.