Digital Commons Network^™

Testing For Cognitive Deficits After Mild Traumatic Brain Injury Using The Automated Neuropsychological Assessment Metric And Dual-Task Assessments, Jasmin Mabry

University Honors Theses

Cognitive deficits are common following mTBI. DT gait assessments and seated computerized exams are often used for evaluating those deficits. Little is known about DT gait and neurocognitive performance in a chronic population. We compared people with chronic mTBI and subacute mTBI to healthy controls (HC) on DT gait and neurocognitive performance and explored the relationship of DT gait performance with a traditional neurocognitive (TNC) exam.

Subjects completed a computerized TNC - the ANAM - and a motor-cognitive DT test which assessed both DT motor performance as well as the cognitive task accuracy. The DT test consisted of subjects walking …

How Has Cultural Marxism Been Used As A Political Tactic In Order To Decrease Trust In Higher Education?, Drew Havnaer

University Honors Theses

This thesis will address the rise in popularity of the political notion of the 'Culture War.' It will trace this theory from its origins in the mid-20th century, through the landmark 1993 Buchanan Culture War speech, and to a modern version, often referred to as the theory of Cultural Marxism. The first part of the argument identifies employment of this theory by modern conservatives, and analyzes how many of us encounter it in our daily life, most prominently in reference to higher education. The second part of the argument targets the effect in colleges and universities specifically. It identifies how …

Rapid Method For Consistency And Concentration Reporting Of Cannabidiol Using 1H-Nmr And Computer-Assisted Chemical Software, Michael A. Fernando

University Honors Theses

An integrated computational method was demonstrated with hemp-derived Cannabidiol for an assessment of its purity and concentration. The sample was structurally verified, high purity, and 2.98 mmol/L in dissolved DMSO. The method presented is a general approach to assessing purity and concentration for any small organic molecule in CMC-Assist.

An Investigation Of Anti-Black Racism Libguides At Arl Member Institutions, Gemmicka Piper, Mahasin Ameen, M. Sara Lowe

Communications in Information Literacy

This study sought to analyze anti-Black racism LibGuides created by ARL member institutions to determine strengths and weaknesses of the guides based on LibGuides best practices. Institutional and LibGuide author demographic information were also gathered to determine correlations or trends, if any. Rubric evaluation of LibGuides found that guides were strongest in areas related to guide design, materials included on the guides, and links to resources. Guides were weakest in areas related to the framing of social justice and pedagogy. Results from this study have the potential to inform the structure and revision of social justice LibGuides at a time …

Applying Behavioral And Physiological Measures To Assess The Relative Impact Of The Prolonged Covid-19 Pandemic Closure On Two Mammal Species At The Oregon Zoo: Cheetah (A. Jubatus) And Giraffe (G. C. Reticulata And G. C. Tippelskirchii), Laurel Fink, Candace D. Scarlata, Becca Vanbeek, Todd Bodner, Nadja C. Wielebnowski

Biology Faculty Publications and Presentations

The effect of visitor presence on zoo animals has been explored in numerous studies over the past two decades. However, the opportunities for observations without visitors have been very limited at most institutions. In 2020, the Oregon Zoo was closed, in response to the global SARSCoV-2 (COVID-19) pandemic, from 15 March 2020 to 12 July 2020, resulting in approximately four consecutive months without visitor presence. This study aimed to quantify potential behavioral and hormonal changes expressed during two transition periods in zoo visitor attendance: the initial time period before and after closure in March 2020 and time before and after …

Do Loneliness And Social Isolation Predict Mortality Because Of Hazardous Drinking?, Jussi Tanskanen, Sarah N. Arpin, Cynthia D. Mohr

Psychology Faculty Publications and Presentations

Introduction: Subjective feelings of loneliness and objective social isolation have been consistently connected with ill-health and mortality, though little work has empirically examined the mechanisms explaining the adverse effects. This study examines whether alcohol consumption explains the connection of loneliness and social isolation on mortality in different age and gender groups.

Methods: The sample comprised a representative 1994 Finnish sample (n = 8,650) matched with 22-year follow-up mortality data. A multigroup path analysis with discrete survival time analyses was conducted.

Results: There were unique differences in the associations between loneliness, social isolation, alcohol consumption, and mortality based on age and …

Reflections On Teaching Against White Supremacy During A Time Of Social Rupture And Transformation, Erica Fonesca, Stéphanie Wahab

School of Social Work Faculty Publications and Presentations

Social Justice and Social Work is a foundational course required for all social work students in the master’s of social work program at Portland State University. Although the course has long focused on interrupting oppressions including White supremacy, teaching the course during the fall of 2020 required a nimble dance between our familiar modes of teaching and the need for spontaneous adaptation and creativity. The unique landscape for this course included teaching the course remotely (Zoom), inside a university embattled around the arming of its security force (that killed a Black man in 2018), in a city targeted by an …

Community College Geoscience Faculty Perspectives On Critical Thinking Instructional Tools, Mariela Salas Bao

Dissertations and Theses

Research has shown that modern courses and programs designed to foster critical thinking vary in both content and delivery, in turn leading to differences in their effectiveness. Few studies have investigated critical thinking among nontraditional students at community colleges taking STEM courses, especially within the geosciences. Furthermore, such research has focused primarily on the students with few if any studies involving faculty. This study examined the perceptions held by community college geoscience faculty regarding critical thinking and how such perceptions influenced their choice of instructional strategies. This study used a basic qualitative methodology and a maximum variation sampling to select …

Exploring The Potential Use Of Porous Silica Nanoparticles In Cest-Mri, Lydia Makotamo

Dissertations and Theses

Magnetic resonance imaging (MRI) is a widely used modality in diagnostics, treatment, and monitoring various conditions due to its ability to generate high-resolution images using non-ionizing radiation. The advent of contrast agents, which generally work by increasing the spin relaxation rate constants of water protons, has led to image enhancement. Despite the usefulness of this class of agents in diagnostic medicine, their inability to provide in-depth functional and anatomical information, coupled with their high detection limits, has led to new agents being explored.

Chemical exchange saturation transfer (CEST) presents an alternative route to generate signals via repetitive saturations transfers between …

Gentrification, Amie Thurber, Amy Krings

School of Social Work Faculty Publications and Presentations

Gentrification can be understood as the process through which geographical areas become increasingly exclusive, which disproportionately harms people living in poverty and people of color, as well as the elderly, families, and youth. As such, this article argues that macro social work practitioners should view gentrification as a key concern. Thus, to help guide macro interventions, the article begins by first defining gentrification and describing ways to measure it, while emphasizing its difference from revitalization. Second, the article explores causes of gentrification, including its relationship to systemic racism. Third, the article explores the consequences of gentrification on individuals’ and communities’ …

Bridging The Gap Between Clients And Public Defenders: Introducing A Structured Shadow Method To Examine Attorney Communication, Christopher M. Campbell, Kelsey S. Henderson

Criminology and Criminal Justice Faculty Publications and Presentations

A growing body of scholarship argues that representing clients in an effective and quality manner should be a critical goal for public defenders, emphasizing the need to be client-centered. Beyond this call, recent research emphasizes that client-centered approaches hinge on good communication as it can contribute to a more effective attorney–client relationship. However, to identify and improve communication and client-centered relationships, major obstacles must be overcome which involve conceptualizing and operationalizing quality representation and communication. In this article, we introduce a two-phase, structured shadowing method as a way to overcome these obstacles. Phase I consists of a survey of public …

"It's Not By Accident": Examining Leadership Efforts To Disrupt Oregon's Segregated K-12 Education System, Michael Eric Salitore

Dissertations and Theses

The American education system systematically and persistently excludes students from the general education setting based on (dis)ability. Disproportionate segregation of students with Intellectual Disability (ID) is a form of prejudice that is acceptable today and allowable by current laws. Fully segregated education settings for students with ID are harmful to students with disabilities, to their neurotypical peers, and to civilized society as a whole. For many students with ID, ableist systems, deficit thinking, and special education rules allow for segregated placements to persist, impacting their pathway to accessing the general education curriculum.

Improving inclusive practices as a research-based practice for …

Mothers' Drinking Motives, Sheila Kathleen Umemoto

Dissertations and Theses

Increases in women's excessive alcohol use are leading to concerns about a developing public health problem since, for women, it takes fewer years and lower doses to develop a range of alcohol-induced health problems. Maternal status is generally considered protective against alcohol use; however, this effect is weakened by multiple social role strain, leading to higher stress and negative affect, and subsequent coping-related alcohol use. Given that the majority of mothers with young children are working or looking for work (72.3%; BLS, 2021), it is likely that the combination of competing demands and expectations associated with multiple roles of parent, …

Uncomfortable Conversations, Marina Lopez, Caroline Woolard

Uncomfortable Conversations

In the last five years we have found ourselves in a cultural moment of reckoning, in which survivors are being listened to and supported and perpetrators are being held accountable more than before. However, what emerged is also a culture in which any infraction results in the call-out and cancellation of the individual in question. I believe that this kind of tipping of the scales in the opposite direction serves as an usher of transformation, but that it is not a sustainable or regenerative space to remain in. To create a culture that embodies values of cooperation, pluralism, and collective …

Geometric Characterization Of Continuously Defective Elastic Crystals, Marek Z. Elźanowski

Mathematics and Statistics Faculty Publications and Presentations

We show how some differential geometric structures associated with a concept of a homogeneous space appear naturally in a kinematic model of continuously distributed defects in an elastic crystal solid and discuss how one can use them to describe the defectiveness of such a continuum.

The Effect Of Viscosity On The Puddle Dynamics In Low Gravity Environment, Taif Hamed Saleh Al Juboori

Dissertations and Theses

Enormous liquid puddles are observed to jump spontaneously from non-wetting substrates when exposed to the nearly step-reduction in body force common to drop tower test facilities. The phenomenon is similar to the second half of terrestrial drop bounce experiments except that (1) the initial static equilibrium configuration satisfies the static contact angle condition, (2) the initial height of the puddle is limited to the capillary height, and (3), for drop tower test durations on the order of seconds, puddle volumes can be over 10⁴ times larger in mass (volume). The passive puddle jump mechanism provides a no-moving-parts deployment method …

"We Support You... To An Extent": Identities, Intersections, And Family Support Among First-Generation Students In A School Of Social Work, Miranda Mosier

School of Social Work Faculty Publications and Presentations

Family support is a critical part of college student retention. Given the strength of parental educational attainment in predicting access and persistence among college students (Choy, 2001), some have questioned the capacity for families to support first-generation college students. Family support may be especially critical for first-generation college students, who value interdependence more highly than continuing generation students (Stephens et al., 2012). This paper centers the perspectives of first-generation students in a school of social work and their experiences of family support. Focus group conversations were analyzed using the Listening Guide/Voice-centered relational data analysis (Brown & Gilligan, 1992). My interpretations …

Vehicular Design And Resource Allocation Policies For Equitable Road Safety, Alyssa Ryan

PSU Transportation Seminars

The diversity of road users is not equitably accounted for in vehicular and infrastructure design and funding allocation policies, among other areas that impact mobility. This impedes the ability for all road users to experience the same level of safety while traveling. Moving towards equitable road safety for all road users is critical to improve the quality of life and save lives of those that are most underserved in the transportation sector.

Professor Alyssa Ryan discusses two strategies to increase safety for vulnerable road users. First, a study on road injury differences between drivers of different biological sex is presented. …

The Draining Of Capillary Liquids From Containers With Interior Corners Aboard The Iss, Joshua Thomas Mccraney, Mark M. Weislogel, Paul Steen

Mechanical and Materials Engineering Faculty Publications and Presentations

In this work, we analyze liquid drains from containers in effective zero-g conditions aboard the International Space Station (ISS). The efficient draining of capillary fluids from conduits, containers, and media is critical in particular to high-value liquid samples such as minuscule biofluidics processing on earth and enormous cryogenic fuels management aboard spacecraft. The amount and rate of liquid drained can be of key concern. In the absence of strong gravitational effects, system geometry, and liquid wetting dominate capillary fluidic behavior. During the years 2010–2015, NASA conducted a series of handheld experiments aboard the ISS to observe “large” length scale capillary …

Letitia Carson In Court: African American Women, Property, And Wages In The Pacific Northwest, Stephanie Marie Vallance

Dissertations and Theses

Letitia Carson arrived in Oregon from Missouri in 1845, accompanied by David Carson and their newborn child, a daughter named Martha. The Carsons settled in the Soap Creek Valley and took advantage of Oregon's Provisional Government's donation land claim program, living on 640 acres in the newly formed Benton County with Martha and a second child, a son named Adam, born a few years after arriving in Oregon. Within ten years, however, David would be dead and Letitia would be dispossessed of all property and belongings. A former slave, Letitia had little social standing in the new territory and no …

Webinar: Radar Point Cloud Segmentation Using Gmm In Traffic Monitoring, Siyang Cao

TREC Webinar Series

Intelligent transportation systems (ITS) change our communities by improving the safety and convenience of people’s daily mobility. The system relies on multimodal traffic monitoring, that needs to provide reliable, efficient and detailed traffic information for traffic safety and planning. How to reliably and intelligently monitor intersection traffic with multimodal information is one of the most critical topics in intelligent transportation research. In multimodal traffic monitoring, we gather traffic statistics for distinct transportation modes, such as pedestrians, cars and bicycles, in order to analyze and improve people’s daily mobility in terms of safety and convenience. In this study, we use a …

Mapping The Publics: The Production Of Spatial Knowledge And Public Interest, Paul Thomas Manson

Dissertations and Theses

Over the past decades, calls for comprehensively managing and planning ocean resources have emerged internationally and within the United States. Central to these calls is a drive to expand coastal and marine spatial planning with a particular focus on technologically mediated public involvement. These new public involvement technologies aim, more quickly and thoroughly, to solicit and analyze public values and existing uses of the coastal and marine environments. One particular technological innovation is the use of participatory geographic information systems (PGIS). These new tools allow for stakeholders, members of the public, and planning entities to collect, visualize, and interact with …

Modeling Environmental Factors Related To Drought-Induced Tree Mortality Based On Lidar And Hyperspectral Imagery, Lauren Nicole Sharwood

Dissertations and Theses

Climate change is projected to bring more frequent and prolonged droughts, causing widespread forest die-off. Identifying tree mortality over large spatial extents in response to the most recent California drought will help forest managers and conservationists understand where there may be a greater likelihood of future die-offs. In order to find more at-risk areas, this study evaluated how interacting site-specific topographic, climate, substrate, and stand characteristics mediated tree mortality in the Central Sierra Nevada during the 2012-2016 drought. The author used lidar and hyperspectral imagery provided by the National Ecological Observatory Network to identify individual dead trees using the Random …

Novel Quantum Algorithms To Minimize Switching Functions Based On Graph Partitions, Peng Gao, Marek A. Perkowski, Yiwei Li, Xiaoyu Song

Electrical and Computer Engineering Faculty Publications and Presentations

After Google reported its realization of quantum supremacy, Solving the classical problems with quantum computing is becoming a valuable research topic. Switching function minimization is an important problem in Electronic Design Automation (EDA) and logic synthesis, most of the solutions are based on heuristic algorithms with a classical computer, it is a good practice to solve this problem with a quantum processer. In this paper, we introduce a new hybrid classic quantum algorithm using Grover’s algorithm and symmetric functions to minimize small Disjoint Sum of Product (DSOP) and Sum of Product (SOP) for Boolean switching functions. Our method is based …

Effectiveness Assessment Of The Search-Based Statistical Structural Testing, Yang Shi, Xiaoyu Song, Marek A. Perkowski, Fu Li

Electrical and Computer Engineering Faculty Publications and Presentations

Search-based statistical structural testing (SBSST) is a promising technique that uses automated search to construct input distributions for statistical structural testing. It has been proved that a simple search algorithm, for example, the hill-climber is able to optimize an input distribution. However, due to the noisy fitness estimation of the minimum triggering probability among all cover elements (Tri-Low-Bound), the existing approach does not show a satisfactory efficiency. Constructing input distributions to satisfy the Tri-Low-Bound criterion requires an extensive computation time. Tri-Low-Bound is considered a strong criterion, and it is demonstrated to sustain a high fault-detecting ability. This article tries to …

Librarianship Is Personal: Qualitative Library Practices In The Post-Covid Era, Emily Ford

Library Faculty and Staff Publications and Presentations

During the COVID-19 era of remote work one thing became clear, personal and professional boundaries were muddied. Pets, partners, and children made appearances during zoom meetings, students and colleagues may have seen the inside of our houses. While this new era may have changed the boundaries between our personal and professional lives, it opens the opportunity for us to explore broader uses of phenomenology, or personal lived experiences, in library practices. How can we tap into personal experiences to inform our new and developing practices? In this session we’ll explore phenomenological research approaches that we can apply to our practices …

Economic Impacts Of Street Improvements: Findings From Portland Area, Jennifer Dill, Jenny H. Liu

PSU Transportation Seminars

The Active Transportation Return on Investment (ATROI) study aimed to provide a quantitative and qualitative assessment of the economic benefits of active transportation infrastructure in the Portland, OR region. The study was funded by Portland Metro and conducted by researchers at PSU and Metro.

This seminar will focus on one part of the study--a quantitative assessment of the economic impacts of 12 "catalyst" projects. These projects retrofitted busy commercial streets with pedestrian friendly treatments aimed at catalyzing economic development. The projects were in Beaverton, Cornelius, Forest Grove, Gresham, Milwaukie, Oregon City, Portland, and Tigard. The analysis estimated effects on employment, …

The Imperative For Climate Action At Portland State University, Stephen Percy

Office of the President Publications and Presentations

Portland State University President Stephen Percy announces the formation of the Climate Change Initiative.

Research Sites Get Closer To Field Camps Over Time: Informing Environmental Management Through A Geospatial Analysis Of Science In The Mcmurdo Dry Valleys, Antarctica, Stephen M. Chignell, Madeline E. Myers, Adrian Howkins, Andrew Fountain

Geology Faculty Publications and Presentations

As in many parts of the world, the management of environmental science research in Antarctica relies on cost-benefit analysis of negative environmental impact versus positive scientific gain. Several studies have examined the environmental impact of Antarctic field camps, but very little work looks at how the placement of these camps influences scientific research. In this study, we integrate bibliometrics, geospatial analysis, and historical research to understand the relationship between field camp placement and scientific production in the McMurdo Dry Valleys of East Antarctica. Our analysis of the scientific corpus from 1907–2016 shows that, on average, research sites have become less …

(Not) Minding The Gap: A Qualitative Interview Study Of How Social Class Bias Can Influence Youth Mentoring Relationships., Renée Spencer, Martha J. Mccormack, Alison L. Drew, Grace Gowdy, Thomas E. Keller

School of Social Work Faculty Publications and Presentations

This study sought to examine how social class bias may be enacted by mentors and mentoring program staff within community-based youth mentoring relationships and how these biases may influence the mentoring relationship. A narrative thematic analysis was conducted with interviews from mentors, mentees' parents/caregivers, and mentoring program staff representing 36 matches participating in a larger, prospective, mixed-methods study examining factors associated with early match closures. Findings indicate that although some mentors were able to partner with the youth and family to effectively navigate challenges related to the family's economic circumstances, other mentors and some mentoring program staff held deficit views …