Digital Commons Network^™

Oral Health And Older Adults: A Narrative Review, Martin S. Lipsky, Tejasvi Singh, Golnoush Zakeri, Man Hung

Institute on Aging Publications

Oral health’s association with general health, morbidity, and mortality in older adults highlights its importance for healthy aging. Poor oral health is not an inevitable consequence of aging, and a proactive, multidisciplinary approach to early recognition and treatment of common pathologies increases the likelihood of maintaining good oral health. Some individuals may not have regular access to a dentist, and opportunities to improve oral health may be lost if health professionals fail to appreciate the importance of oral health on overall well-being and quality of life. The authors of this narrative review examined government websites, the American Dental Association Aging …

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 …

Self-Optimizing Feature Generation Via Categorical Hashing Representation And Hierarchical Reinforcement Crossing, Wangyang Ying, Dongjie Wang, Kunpeng Liu, Leilei Sun, Yanjie Fu

Computer Science Faculty Publications and Presentations

Feature generation aims to generate new and meaningful features to create a discriminative representation space. A generated feature is meaningful when the generated feature is from a feature pair with inherent feature interaction. In the real world, experienced data scientists can identify potentially useful feature-feature interactions, and generate meaningful dimensions from an exponentially large search space in an optimal crossing form over an optimal generation path. But, machines have limited human-like abilities. We generalize such learning tasks as self-optimizing feature generation. Self-optimizing feature generation imposes several under-addressed challenges on existing systems: meaningful, robust, and efficient generation. To tackle these challenges, …

Pcl And Dmso2 Composites As Biomaterials For Additive Manufacturing, Jae-Won Jang

Dissertations and Theses

Tissue engineering provides a viable solution to address the shortage of organ donors for allograft transplants. Its primary objective is the replacement or regeneration of damaged tissues which is developed by combining living cells, a scaffold, and a bioreactor. Among these components, the scaffold serves as an artificial extracellular matrix (ECM), which plays a pivotal role in supporting cell adhesion, proliferation, differentiation, and overall tissue development. Additive manufacturing (AM), commonly referred to as three-dimensional (3D) printing, emerges as a promising method for scaffold fabrication due to its capability to create complex and repeatable geometries.

Polycaprolactone (PCL) has been one of …

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.

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.

Thorstein Veblen And His Underlying Philosophical Influences, John B. Hall

Economics Faculty Publications and Presentations

This inquiry recognizes Thorstein Veblen first and foremost as a philosopher who advanced a literature in Social Sciences, generally, and Economic Science, in particular. Veblen’s thinking and writing were supported by rich traditions drawn from notable philosophers that included among several: Charles Sanders Peirce, Immanuel Kant, and Friedrich Nietzsche. Relying upon his strong background in Philosophy, he then sought to challenge mainstream, neoclassical economics, especially. As his career developed, he would turn his talents and energies towards advancing ideas that would ultimately prove foundational for heterodox economics and, relatedly, American Institutionalism.

Journal of Economic Literature Classification Codes:
B15 – Historical, …

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.

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.

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 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.

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.

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 …

Assessing Cool Corridor Heat Resilience Strategies For Human-Scale Transportation, Nicole Iroz-Elardo, Ladd Keith, Kristina M. Currans, Ashley Avila, Lauren Heath, Brenden J. Little, Ethan C. Wissler, Andrew J. Birkelbach

TREC Final Reports

Road pavement is a known contributor to the urban heat island effect. Several vendors are providing engineered pavements coatings—known as “cool pavement”—to reflect light and, therefore, reflect heat to reduce the thermal load of roads. Few of these cool pavements have been evaluated outside lab conditions, where they tend to rely heavily on surface temperature measurements with the assumption that lower surface temperatures result in lower ambient air temperatures in real-world practice. Further, while heat is detrimental to the pedestrian and cyclist experience and health, almost no research exists documenting the experience of the cool pavement on active travelers, including …

Juvenile Dungeness Face High Predation Risk From Green Crabs Across Increased Temperatures At Different Salinities, Trever Gelling

Environmental Science and Management Undergraduate Departmental Honors Theses

Marine heatwaves, altered precipitation regimes, and other changing climate conditions are altering the abiotic conditions of Oregon's estuaries. Furthermore, warmer water temperatures are correlated with the range expansion and population growth of the invasive and broadly tolerant Carcinus maenas, the green crab, in Oregon. Metacarcinus magister, Dungeness crab, one of Oregon’s most valuable fishery species, is also facing these climate stressors, and their young that recruit to estuaries overlap with C. maenas adults. Therefore, we wanted to determine impacts of C. maenas on young-of-the-year (YOTY) M. magister and the roles of salinity, temperature, and predator size in mediating …

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

Bulletin & Curriculum Change Documents

No abstract provided.

Path Instabilities And Drag In The Settling Of Single Spheres, Facundo Cabrera-Booman, Nicolas Plihon, Mickael Bourgoin

Mechanical and Materials Engineering Faculty Publications and Presentations

The settling behavior of individual spheres in a quiescent fluid was studied experimentally. The dynamics of the spheres was analyzed in the parameter space of particle-to-fluid density ratio (Γ) and Galileo number (Ga), with Γ ∈ (1.1,7.9) and Ga ∈ (100,340). The experimental results showed for the first time that the mean trajectory angle with the vertical exhibits a complex behavior as Ga and Γ are varied. Numerically predicted regimes such as Vertical Periodic for low Γ values, and Planar Rotating for high Γ values were validated. In particular, for the denser spheres, a clear transition from planar to non-planar …

Moisture-Controlled Triboelectrification During Coffee Grinding, Joshua Méndez Harper, Yong-Hyun Kim, Robin E. Bumbaugh, Connor S. Mcdonald, Christopher H. Hendon, Elana J. Cope, Leif E. Lindberg, Justin Pham, Multiple Additional Authors

Electrical and Computer Engineering Faculty Publications and Presentations

Triboelectrification is the physical process where materials acquire surface charge from frictional interactions at their interfaces.The magnitude of charge depends on the interfacial material composition and can be harnessed in emergent technologies for energy generation.

The mechanism of electrostatic accumulation is complex and is further obscured in granular materials where collisions are sufficiently energetic to cause fracturing. In this “fractoelectric” regime, crack initiation and propagation are thought to charge particles through transfer of electrons and/or ions at the hot crack interface.

Whether a material’s charging is dominated by tribo- or fractoelectrification, fracture-generated granular flows often comprise particles whose surface charge …

Psu Esi Review (Doe-Psu-0000922-6), Tylor Slay, Jaime Kolln, Robert B. Bass

Electrical and Computer Engineering Faculty Publications and Presentations

A guide to developing an Energy Service Interface (ESI) was created as part of the Grid Modernization Laboratory Consortium 2.5.2 ESI project. The approach applies device-agnostic and service-oriented ESI principles and leverages documents such as the Interoperability Maturity Model and Common Grid Service Definitions to provide a methodology to review, develop, and update standards and profiles to engage distributed energy resources to provide grid services. This document evaluates the ESI developed by Portland State University’s Power Engineering Group under the Electric Grid of Things project funded by the U.S. Department of Energy. The evaluation explores the compliance of this specific …

Trust Model Utilization For Energy Grid Communication, N. Sonali Fernando, John M. Acken, Robert B. Bass

Electrical and Computer Engineering Faculty Publications and Presentations

The internet information that is used by the Energy Grid of Things requires both preventative security measures as well as surveillance measures. The preventative security measures include certificates, encryption, and all of the basic security protocols as defined by published standards. The surveillance measures include monitoring information flow activities and evaluating these messages for indications of potential security attacks. We describe in this paper the utilization of a Distributed Trust Model that was developed specifically for monitoring communication within an Energy Grid of Things. The goal for the Distributed Trust Models is to provide a level of aggregate trust that …

Field Demonstration Of Residential Der Service-Oriented Load Participation, Zhongkai Zeng, Dana Paresa, Midrar Adham, Robert B. Bass

Electrical and Computer Engineering Faculty Publications and Presentations

Amidst a concerning surge in power consumption during peak hours, coupled with heightened power grid instability, and driven by a growing demand for electricity, aggregations of Distributed Energy Resource are becoming a viable means for providing essential reliability services. Electric utility companies have proactively implemented Demand Response programs for decades. These programs employ Direct Load Control methods to enhance power grid stability, achieved by controlling customers’ Distributed Energy Resource during peak hours to reduce power consumption. However, a notable drawback of Direct Load Control has been high unenrollment rates of DR program participants due to customer discomfort. Therefore, the underlying …

Analyzing Frequency Event Detection Algorithm Performance Using Different Denoising Methods, Hussain A. Alghamdi, Midrar Adham, Robert Bass

Electrical and Computer Engineering Faculty Publications and Presentations

Maintaining grid frequency at its nominal value is crucial for power system stability and supply-demand balance. Swift and accurate detection of frequency events is vital for providing primary frequency response support. Frequency event detection algorithms often rely on Phasor Measurement Unit data, which may contain noise. Implementing a denoising preprocessing step enhances detection precision and accuracy. In previous works, a frequency event detection algorithm based on wavelet transform was developed, which uses discrete wavelet transform (DWT) for denoising purposes. In this paper, several denoising techniques are considered as potential replacements for the current DWT method. This research investigates and compares …

Fight, Flight, Freeze: How Access To Support Shapes Tenant Responses To Eviction In Multnomah County, Natalie J. Cholula, Lisa K. Bates, Alex Farrington, Marisa Zapata, Colleen Carroll, Jacen Greene, Hadley Bates

Urban Studies and Planning Faculty Publications and Presentations

Facing eviction is a traumatic event that forces tenants into a fight, flight or freeze response. Our focus groups with Multnomah County tenants reveal that their responses to eviction are directly shaped by their access to support. Many tenants are unable to access formal support and therefore respond to eviction by freezing up or fleeing their home. Conversely, tenants who can access formal support—including rental assistance or legal assistance—exhibit a fight response, leveraging external support to challenge or avoid their eviction.

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 …

Quick Guide To Aquatic Weeds Of Oregon, Gabriel E. Campbell, Ashley Newcomb, Jacob Rose

Center for Lakes and Reservoirs Publications and Presentations

This document contains a quick, non-technical, pictured-based field guide to aquatic weed species in Oregon and throughout the Pacific Northwest. It contains approximately 50 common, newly emerging, and watch list exotic weeds and common native look-alike plants. The intended audience for this guide includes weed professionals, restoration practitioners, land managers, professional botanists, and amateur naturalists.

A Magnetic Constant Torque Mechanism, Gozde Sivka, Dawei Che, Bert Dechant, Colton Bruce, Jonathan Z. Bird

Electrical and Computer Engineering Faculty Publications and Presentations

This paper presents the design of a new type of magnetic constant torque mechanism. The constant torque is shown to be created over a prescribed ±65° stroke length and is shown to be highly uniform. The value of the constant torque is adjustable through the relative axial motion of the rotors. The constant torque is created using a simple magnet arrangement which makes use of the axial transverse-flux path of one rotor's magnetic field relative to the azimuthal field flow of the fixed secondary rotor. It is shown that the use of segmented magnets introduces torque ripple.