Digital Commons Network^™

The Power Of Algorithms And Big Data: A Marketing Perspective On Consumer Manipulation In Business, Jordan C'Rene Reuille-Dupont

University Honors Theses

In marketing, predictive analytics molds big data into tools that can create demographics, target pleasurable neuromodulator chemicals like dopamine, and influence individual and societal behavior patterns. Professionals and scholars alike can use machine-based computation to transform big data into usable knowledge that accurately represents and tracks human behavior. In the past couple of decades this has led to the acceleration of the attention economy and has fueled the age of information. It has pushed countries to not only enforce new laws and regulations, but also race to secure control over data science technologies. The research for this thesis will ultimately …

Patients' Willingness To Accept Social Needs Navigation After In-Person Versus Remote Screening, Anna Louise Steeves-Reece, Melinda Marie Davis, Jean Hiebert Larson, Zoe Major-Mcdowall, Anne Elizabeth King, Christina Nicolaidis, Bruce Goldberg, Dawn Michele Richardson, Stephan Lindner

OHSU-PSU School of Public Health Faculty Publications and Presentations

Social needs screening and referral interventions are increasingly common in health care settings. Although remote screening offers a potentially more practical alternative to traditional in-person screening, there is concern that screening patients remotely could adversely affect patient engagement, including interest in accepting social needs navigation.

Design And Optimization With Quantum And Memristor Platforms, Yiwei Li

Dissertations and Theses

The complexity and diversity of modern computing challenges have made it difficult for traditional computers to efficiently handle tasks such as computer-aided design, design optimization, and combinatorial problems within a reasonable time frame. In applications such as bitcoin mining and robotic control, power consumption and circuit size are critical factors. To overcome these limitations, this dissertation examines alternative computing technologies such as quantum computers and hybrid memristive circuits. The research demonstrates that these technologies hold the potential to offer more efficient and effective solutions for particular problems, whether in terms of faster computation or reduced power consumption.

Rural Gentrification And The Spillover Effect: Integrated Transportation, Housing, And Land Use Challenges And Strategies In Gateway Communities, Danya Rumore, Philip Stoker

TREC Final Reports

Small towns and cities near national parks, public lands, and other natural amenities throughout the West are experiencing rapid growth and increased visitation. These “gateway communities” comprise a significant portion of the rural West, constituting about 31% of all communities and more than 60% of those under 25,000 people. Our prior NITC-funded research shows that growth and increased tourism create a range of “big city challenges” for gateway communities, particularly a significant increase in housing prices, which pushes the local workforce to outlying areas and other rural communities. As a result, despite being small towns, many developed gateway communities have …

Microbial Motility At The Bottom Of North America: Digital Holographic Microscopy And Genomic Motility Signatures In Badwater Spring, Death Valley National Park, Carl Snyder, Jakob P. Centlvre, Shrikant Bhute, Jay Nadeau, Multiple Additional Authors

Physics Faculty Publications and Presentations

Motility is widely distributed across the tree of life and can be recognized by microscopy regardless of phylogenetic affiliation, biochemical composition, or mechanism. Microscopy has thus been proposed as a potential tool for detection of biosignatures for extraterrestrial life; however, traditional light microscopy is poorly suited for this purpose, as it requires sample preparation, involves fragile moving parts, and has a limited volume of view. In this study, we deployed a field-portable digital holographic microscope (DHM) to explore microbial motility in Badwater Spring, a saline spring in Death Valley National Park, and complemented DHM imaging with 16S rRNA gene amplicon …

Pedestrian Behavior Study To Advance Pedestrian Safety In Smart Transportation Systems Using Innovative Lidar Sensors, Taylor Li, Sirisha M. Kothuri, Katherine L. Keeling, Xianfeng Terry Yang, Farzana R. Chowdhury

TREC Final Reports

Pedestrian safety is critical to improving walkability in cities. Although walking trips have increased in the last decade, pedestrian safety remains a top concern. In 2020, 6,516 pedestrians were killed in traffic crashes, representing the most deaths since 1990 (NHTSA, 2020). Approximately 15% of these occurred at signalized intersections where a variety of modes converge, leading to the increased propensity of conflicts. Current signal timing and detection technologies are heavily biased towards vehicular traffic, often leading to higher delays and insufficient walk times for pedestrians, which could result in risky behaviors such as noncompliance. Current detection systems for pedestrians at …

The Power Of Music – An Economic Analysis Of Oregon’S Emerging Commercial Music Industry, Jenny H. Liu, Steve Marlotta, Emma Brophy, Rohan Khanvilkar, Hyeoncheol Kim

Northwest Economic Research Center Publications and Reports

Oregon has a vibrant creative presence, producing a diverse array of artists known on the national scale, in addition to independent artists mostly familiar on the local scene. The state is also home to many annual music festivals and live performance events that attract large numbers of attendees, while also playing host to music businesses big and small spanning sound recording studios, mastering engineers, composers, tuners, digital streaming services, graphic designers and music educators. All of these components of the Oregon commercial music industry economically impact their communities by providing entertainment and increasing profits for performance venues, distributing wages, and …

Exploring Perspectives On Social And Emotional Learning Programs In Schools, Gina N. Carruth

University Honors Theses

This study explores different viewpoints on the implementation of social and emotional learning (SEL) programs in schools. Using a literature review approach, information was collected through peer-reviewed and online articles to examine the benefits and potential challenges of SEL programs in promoting students' social and emotional development. The findings reveal that while there is widespread support for SEL programs, there are also concerns about its implementation, effectiveness, and potential unintended consequences. This study contributes to the field by highlighting the need for a more nuanced and critical understanding of SEL programs, and their impact on students as well as insight …

Extracting Extractivism: Technopessimism, Green Anarchism And (Gestures Toward) Indigeneity, Matthew Anglin

University Honors Theses

A certain ethics of technology has begun appearing in "extractivismo/extractivism" discourses concerning resource extraction in relation to the greater socio-ecological emergency in order to describe a critique of, inter alia, prevalent conceptions of, and efforts to promote and expand, "sustainable development" and the "renewable energy transition." This thesis reviews political ecology literature concerning various conceptualizations of extractivism, highlighting the critical concept of total extractivism; it focuses on the relatively divergent intellectual resources of technopessimism and green anarchism that converged in the late-twentieth century, revealing another strand of influence coming from interactions with Indigenous peoples--all of which inform …

Live From Oregon - An Economic Analysis Of Oregon’S Emerging Live Performance Industry, Jenny Liu, Steve Marotta, Emma Brophy, Rohan Khanvilkar, Hyeoncheol Kim

Northwest Economic Research Center Publications and Reports

Oregon has a vibrant creative presence, producing a diverse array of artists known on the national scale, in addition to independent artists mostly familiar on the local scene. The state is also home to many commercial and non-profit concerts, music festivals, and other live performance events that attract large numbers of attendees, while also playing host to related businesses big and small spanning musical and theater groups, instrument and gear makers, lighting and sound engineers, graphic designers, and numerous venues. All of these components of the Oregon live performance industry economically impact their communities by providing entertainment and increasing profits …

Quantum Algorithm For Mining Frequent Patterns For Association Rule Mining, Abdirahman Alasow, Marek Perkowski

Electrical and Computer Engineering Faculty Publications and Presentations

Maximum frequent pattern generation from a large database of transactions and items for association rule mining is an important research topic in data mining. Association rule mining aims to discover interesting correlations, frequent patterns, associations, or causal structures between items hidden in a large database. By exploiting quantum computing, we propose an efficient quantum search algorithm design to discover the maximum frequent patterns. We modified Grover’s search algorithm so that a subspace of arbitrary symmetric states is used instead of the whole search space. We presented a novel quantum oracle design that employs a quantum counter to count the maximum …

A Simple In Situ Method For Optimizing Settings For The Einzel Lens Elements In A Focused Ion Beam, Rich Swinford, Erik Sanchez

Physics Faculty Publications and Presentations

Ion beams have had an incredible impact on research in the past couple of decades. One major reason for this is the continued development of systems having optimal beam currents that allows one to image more clearly at different spot sizes to include higher currents that allow for faster milling. The advancements for Focused ion beam (FIB) columns have developed rapidly due to the computational optimization of lens designs. However, once a system has been produced, the optimal column settings for these lenses may change or simply become obscure. Our work involves regaining this optimization with the newly applied values …

Gait And Turning Characteristics From Daily Life Increase Ability To Predict Future Falls In People With Parkinson’S Disease, Vrutangkumar Shah, Adam Jagodinsky, James Mcnames, Multiple Additional Authors

Electrical and Computer Engineering Faculty Publications and Presentations

Objectives: To investigate if digital measures of gait (walking and turning) collected passively over a week of daily activities in people with Parkinson’s disease (PD) increases the discriminative ability to predict future falls compared to fall history alone. Methods: We recruited 34 individuals with PD (17 with history of falls and 17 non-fallers), age: 68 ± 6 years, MDS-UPDRS III ON: 31 ± 9. Participants were classified as fallers (at least one fall) or non-fallers based on self-reported falls in past 6 months. Eighty digital measures of gait were derived from 3 inertial sensors (Opal® V2 System) placed on the …

Crack Detection In An Aluminium Oxide Grinding Wheel By Impact Hammer Tests, Yubin Lee, David Turcic, Dan Danks, Chien Wern

Mechanical and Materials Engineering Faculty Publications and Presentations

Grinding is widely used as the last step of the manufacturing process when a good surface finish and precise dimensional tolerances are required. However, if the grinding wheels have cracks, they may lead to a hazardous working environment and produce poor tolerance in machined products. Therefore, grinding wheels should be inspected for cracks before being mounted onto the machine. In this study, a novel method of finding possible internal cracks in the aluminium oxide grinding wheel will be explored by examining the natural frequency and displacement of wheels using an impact hammer testing method. Grinding wheels were cracked into two …

Evaluating Differences Between Ground-Based And Satellite-Derived Measurements Of Urban Heat: The Role Of Land Cover Classes In Portland, Oregon And Washington, D.C., Vivek Shandas, Yasuyo Makido, Aakash Nath Upraity

Urban Studies and Planning Faculty Publications and Presentations

The distinction between satellite-based land surface temperature (LST) and air temperature has become an increasingly important part of managing urban heat islands. While the preponderance of urban heat research relies on LST, the emergence of a growing infrastructure of publicly available consumer oriented, ground-based sensor networks has offered an alternative for characterizing microscale differences in temperatures. Recent evidence suggests large differences between LST and air temperatures, yet discerning the reason for these differences between satellite-derived measurements of urban heat islands (UHI) and ground-based measurements of air temperature remains largely unresolved. In this study, we draw on an unusually robust and …

Webinar: Improving Recreational Trail Accessibility With A Volcanic Ash Treatment, Charles Riley, Ashton Greer

TREC Webinar Series

Recreational trails serve as valuable transportation corridors and support the health of users. Wheelchair accessibility of recreational trails depends on a variety of conditions, including slope, cross-slope, and surface characteristics. This project focused on improving the firmness and stability of a 0.2-mile section of trail that was otherwise accessible. The existing trail surface consisted of loose ¼” off-specification aggregate on native soil. A volcanic ash-Portland cement binder, studied in prior research, was batched, distributed, mixed, wetted, and compacted on site to improve the firmness and stability of the surface resulting in a smoother surface with less rolling resistance. The webinar …

A Representation For Many Player Generalized Divide The Dollar Games, Garrison Greenwood, Daniel Ashlock

Electrical and Computer Engineering Faculty Publications and Presentations

Divide the dollar is a simplified version of a two player bargaining problem game devised by John Nash. The generalized divide the dollar game has n > 2 players. Evolutionary algorithms can be used to evolve individual players for this generalized game but representation—i.e., a genome plus a move or search operator(s)—must be carefully chosen since it affects the search process. This paper proposes an entirely new representation called a demand matrix. Each individual in the evolving population now represents a collection of n players rather than just an individual player. Players use previous outcomes to decide their choices (bids) in …

Transportation Safety Culture: Where We Are And What It Means, Tara Beth Goddard

PSU Transportation Seminars

Like any healthy professional community, the transportation safety community is not homogenous or without constructive conflict. The increased attention on systems thinking – most commonly known, if not necessarily well understood, under the “Vision Zero” approach – has sparked debate among engineers, planners, academics, public health professionals, advocates, and others about where our attention should be focused to reduce the epidemic of traffic violence. The built environment? Drivers? Engineers and planners? Car culture? What IS car culture? Dr. Goddard brings together her research conducted with colleagues on police crash reporting processes, NHTSA crash investigations, attitudes and effects of the language …

Nerve Tissue Targeted Fluorophore Synthesis: From Scheme To Administration, Cassandra D. Mathieson

PSU McNair Scholars Online Journal

Nerve tissue damage as a result of surgical injury is a common negative outcome during many surgical interventions. Depending on the site of the injury and the amount of cellular damage, nerve tissue injury may potentially have a life altering effect on the surgical patient. Post-surgical nerve pain is often a chronic problem which persists long after injuries have healed, and can severely infringe upon quality of life for individuals.

Surgery that is fluorescence guided will aid in the visualization of nerve structure patterns, and as a result may significantly improve patient outcomes. Small molecule fluorophores may potentially cross the …

Invasive Plant Species And Their Impact On Stream Health Using Macroinvertebrates In The Willamette Valley, Oregon, Michelle Hesek, Patrick Edwards

PSU McNair Scholars Online Journal

Oregon spends approximately $83 million annually to maintain invasive plant species, which decreases resource availability for the environment and humanity. Their continued spread affects riparian zones, one of the most biologically diverse ecosystems that supplement stream and upland habitats. Some of the energy flow in these systems circulates by macroinvertebrates that decompose leaf litter during their immature stage of life. Upon metamorphosis, they rely on plants in riparian zones for reproductive habitat, making them prey to predators in stream and upland food webs, referred to as a transformational link. This research examines how invasive plant species affect stream health in …

Graphical Models In Reconstructability Analysis And Bayesian Networks, Marcus Andrew Harris

Dissertations and Theses

This research focuses on the investigation of two machine learning methodologies, Reconstructability Analysis (RA) and Bayesian Networks (BN). Both methods are probabilistic graphical modeling (PGM) methodologies. RA was developed in the systems community and has applications including time-series analysis, classification, decomposition, compression, pattern recognition, prediction, control, and decision analysis. BNs have origins in path models and have applications similar to those of RA. BNs are another graphical modeling approach for data modeling that is closely related to RA; where BN overlaps RA the two methods are equivalent, but RA and BN each has distinctive features absent in the other methodology. …

Opal Actigraphy (Activity And Sleep) Measures Compared To Actigraph: A Validation Study, Vrutangkumar Shah, Barbara H. Brumbach, Sean Pearson, Paul Vasilyev, James Mcnames, Multiple Additional Authors

Electrical and Computer Engineering Faculty Publications and Presentations

Physical activity and sleep monitoring in daily life provide vital information to track health status and physical fitness. The aim of this study was to establish concurrent validity for the new Opal Actigraphy solution in relation to the widely used ActiGraph GT9X for measuring physical activity from accelerometry epic counts (sedentary to vigorous levels) and sleep periods in daily life. Twenty participants (age 56 + 22 years) wore two wearable devices on each wrist for 7 days and nights, recording 3-D accelerations at 30 Hz. Bland–Altman plots and intraclass correlation coefficients (ICCs) assessed validity (agreement) and test–retest reliability between ActiGraph …

Faculty Senate Monthly Packet February 2023, Portland State University Faculty Senate

Faculty Senate Monthly Packets

The February 6, 2023 Monthly packet includes the February agenda and appendices and the Faculty Senate minutes and attachments from the meeting held January 9, 2023.

Words And Diagrams About Rosenstock-Huessy’S Cross Of Reality, Martin Zwick

Complex Systems Faculty Publications and Presentations

This paper is a systems theoretic examination of Eugen Rosenstock-Huessy’s “cross of reality,” a structure that fuses a spatial dyad of inner-outer and a temporal dyad of past-future into a space-time tetrad. This structure is compatible not only with the "human-centered" point of view that Rosenstock-Huessy favours, but also with the "world-centered" point of view inherent in science. The structure, based in his analysis of speech, is applied by him to a wide variety of individual and collective human phenomena, including language, religion, and social critique. To appropriate terminology used by physicists, the cross of reality could be viewed as …

Systems Thinking Activities Used In K-12 For Up To Two Decades, Diana Fisher, Systems Thinking Association

Complex Systems Faculty Publications and Presentations

Infusing systems thinking activities in pre-college education (grades K-12) means updating precollege education so it includes a study of many systemic behavior patterns that are ubiquitous in the real world. Systems thinking tools include those using both paper and pencil and the computer and enhance learning in the classroom making it more student-centered, more active, and allowing students to analyze problems that have been heretofore beyond the scope of K-12 classrooms. Students in primary school have used behavior over time graphs to demonstrate dynamics described in story books, like the Lorax, and created stock-flow diagrams to describe what was needed …

Numerical Modeling Of A Pile-Supported Wharf Subjected To Liquefaction-Induced Lateral Ground Deformations, Milad Souri, Arash Khosravifar, Stephen Dickenson, Nason Mccullough, Scott Schlechter

Civil and Environmental Engineering Faculty Publications and Presentations

Fully-coupled nonlinear dynamic analysis is increasingly used for assessing the seismic performance of pile-supported wharf structures subjected to liquefaction-induced lateral ground deformations. Several numerical challenges exist for analysis of this highly nonlinear soil-structure interaction, which require robust, yet practical, solutions that are validated with experimental data. This study presents a numerical model of a pile-supported wharf and evaluates the applicability of a soil constitutive model, and modeling assumptions and methods by using recorded data from a well-instrumented, large-scale centrifuge test. The objectives of this study include: (a) evaluating the performance of a recently developed pressure-dependent multi-yield surface constitutive soil model …

New Frontiers Of Laser Welding Technology, Kyung-Eun Min, Jae-Won Jang, Cheolhee Kim

Mechanical and Materials Engineering Faculty Publications and Presentations

With the advances in power sources and optic technologies, high-power laser welding has been utilized in many applications such as automotive, battery manufacturing, and electronic industries. The low-heat input of laser power and its precise control enables minimal thermal damage and geometric inaccuracy in the weldment. Recently, laser welding has evolved in combination with machine learning, monitoring and control technology, new materials, and new processes. This Special Issue aims to present the recent advances in the development in innovative laser welding technologies based on new laser power sources, laser optics, systems, and monitoring technologies. A total of six papers are …

Driver And Bicyclist Comprehension Of Blue Light Detection Confirmation Systems, Douglas P. Cobb, Hisham Jashami, Christopher Monsere, Sirisha Kothuri, David S. Hurwitz

Civil and Environmental Engineering Faculty Publications and Presentations

This study analyzed motorist and bicyclist understanding and preference of positive confirmation of detection of a bicycle by the traffic signal infrastructure using a blue light detection confirmation (BLDC). The research analyzed results of an online survey of 1,123 respondents and intercept survey of 337 respondents. The study initially found that participants of the survey did not understand the meaning of the blue light itself, but comprehension of the system rose from 40% to 50% when supplemental signs were used. Respondents overwhelmingly indicated that they preferred the sign option that included symbols, text, and a representation of the blue light, …

"It Snows Year-Round Here": A Counterstory About Mexican/Mexican American/Xicanx Students’ Experiences With Racism At A Predominantly White University In The Northeast, Martín Alberto Gonzalez

Chicano/Latino Studies Faculty Publications and Presentations

Using critical race theory counterstorytelling, I tell a story about the experiences of Mexican/Mexican American/Xicanx (MMAX) undergraduate students at a private, predominantly white university in the Northeast. Drawing on in-depth interviews, participant observations, pláticas, and document analyses, I highlight the various ways MMAX students experience discrimination on campus. More specifically, discrimination and unsettledness are experienced by MMAX students through the following ways: 1) Racist Name Calling and Racial Slurs; 2) Discrimination by Professors; and 3) Class Discussions as Microaggressions. Through counterstories like this one, I argue that we can shed light on injustices while staying true to our ancestral ways …

Cementation And Groundwater Chemistry In Pleistocene Paleodune Deposits Of The Central Oregon Coast, Adrienne Lynn Stephens

Dissertations and Theses

Pleistocene paleodune deposits occur along the Oregon coast, underlying coastal towns, roadways, and associated power and water infrastructure(s). Secondary cementation within these deposits provides some stability, allowing for near-vertical sea cliffs and roadcut outcrops. Yet, slope instability is a prevalent hazard observed within the paleodune deposits. Weakening of cementing agents via changes to groundwater conditions due to altered vegetation, climate change, or contamination, for example, could promote slope instability, threatening lives and infrastructure. This study aims to investigate the variability in the type and degree of cementation and to determine how they are affected by changes in groundwater conditions.

To …