Digital Commons Network^™

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 …

"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 …

Designing Environmentally Responsible And Highly Effective Bioorthogonally Functionalized Chiral Mri Contrast Agents, Karley Breann Maier

Dissertations and Theses

Magnetic resonance imaging (MRI) revolutionized diagnostic imaging and modernized the characterization of numerous diseases. The clinical success of MRI is in large part due to the employment of gadolinium-based contrast agents (GBCAs). Due to sensitivity limitations, GBCAs are indicated at markedly high dosages (~1 g Gd³⁺ per exam). The routine use of such large quantities of gadolinium poses significant health and environmental risks. There are growing concerns over the effects of dechelation of the metal in vivo and the possible effect of resulting gadolinium deposition. Concurrently, there is a rising awareness of gadolinium anomalies borne by GBCAs which undergo …

Situate: An Agent-Based System For Situation Recognition, Max Henry Quinn

Dissertations and Theses

Computer vision and machine learning systems have improved significantly in recent years, largely based on the development of deep learning systems, leading to impressive performance on object detection tasks. Understanding the content of images is considerably more difficult. Even simple situations, such as "a handshake", "walking the dog", "a game of ping-pong", or "people waiting for a bus", present significant challenges. Each consists of common objects, but are not reliably detectable as a single entity nor through the simple co-occurrence of their parts.

In this dissertation, toward the goal of developing machine learning systems that demonstrate properties associated with understanding, …

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, …

Creativity In Science, Engineering, And The Arts: A Study Of Undergraduate Students' Perceptions, Dildora F. Beaulieu

Dissertations and Theses

Creativity is widely recognized as being invaluable for human development and a crucial 21^st century talent. Preparing students for an uncertain and complex world requires that higher education promote students' imagination, originality, curiosity, and flexibility and build their capacity to take risks to try new approaches to problem-posing and problem-solving. However, little is known about how undergraduates enrolled in different disciplines view creativity. This quantitative study at a university in the northwestern United States assessed how undergraduate students in different academic disciplines responded to an instrument on creativity measurement developed by Dlouhy (2012). The study asked: How do undergraduates …

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 …

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 …

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 …

Determinant Factors Of Bicyclist Injury Severity At Signalized And Unsignalized Intersections, Apy Das

Dissertations and Theses

Bicycling is becoming increasingly popular in Oregon and the US in general due to its environment friendliness as well as health benefits. With Oregon's population projected to increase by more than 30% over the next 30 years, improving the safety of the transportation network for persons on bicycles is important. In Oregon, majority of the bicyclist crashes occur at intersections. This thesis seeks to identify the determinant factors that significantly impact bicyclist crash injury severity at intersections. A mixed logit framework that accounts for any unobserved heterogeneity in the data and allows the estimated parameters to randomly vary across observations …

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 …

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 …

Investigating Values In Discourse: Ideals And Social Plans, Luke Edward Hanst

Dissertations and Theses

Social scientists argue that values enable group coordination. I explore two theories of values before turning to evidence provided by Amanda Gorman's inaugural poem, "The Hill We Climb." First, the paradigm of Shalom Schwartz describes values as transsituational goals which enable groups to coordinate action and evaluate the world. I argue the Schwartz paradigm zooms out from values into categories while I need a means to zoom in to understand values in discourse. I turn to the Pragmatic Prospection paradigm to elaborate the cognitive ontology of goals and to understand the function of language. I argue that values are shared …

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 …

From Mdp To Alphazero, David Robert Sewell

Dissertations and Theses

In this paper I will explain the AlphaGo family of algorithms starting from first principles and requiring little previous knowledge from the reader. The focus will be upon one of the more recent versions AlphaZero but I hope to explain the core principles that allowed these algorithms to be so successful. I will generally refer to AlphaZero as theses [sic] core set of principles and will make it clear when I am referring to a specific algorithm of the AlphaGo family. AlphaZero in short combines Monte Carlo Tree Search (MCTS) with Deep learning and self-play. We will see how these …

Early Implementation Of A Standards-Based Mathematics Curriculum: Understanding Teacher Perspectives And Concerns, Karen Ann Prigodich

Dissertations and Theses

Standards-based mathematics curricula are intended to shape teachers' classroom instruction in alignment with the content and practices of the Common Core State Standards for Mathematics. Instructional leaders facilitating teachers' implementation of these curricula frequently offer a variety of resources and structures to support effective curriculum use, but teachers themselves do not always find these supports to be helpful. Because teachers' concerns vary, understanding teachers' own perspectives is an important starting place for aligning support with teachers' needs. This case study explored the concerns of teachers from three U.S. school districts during their first year of implementing Bridges in Mathematics, …

Developing Strategies To Enhance Mobility And Accessibility For Community-Dwelling Older Adults, Kate Hyun, Kathy Lee, Caroline Krejci, Nilufer Oran Gibson, Troyee Saha

TREC Final Reports

Mobility disparities among older adults affect their ability to travel and access services. This project seeks to understand challenges, barriers, and gaps that older adults experience, and develop forms of assistance or educational strategies to fill the varying mobility gaps and meet mobility needs. This study characterizes older adults’ use of existing and potential transportation options, including conventional transit, paratransit, and ride-hailing systems, based on surveys collected from 146 low-income older adults in Dallas, TX. Using the survey data and interview data, we develop two mathematical modeling (a Latent Class Cluster Analysis and agent-based modeling (ABM)) and conduct content analysis …

Institutional Theory In Sport: A Scoping Review, Jonathan Robertson, Mathew Dowling, Marvin Washington, Becca Leopkey, Dana Lee Ellis, Lee Smith

Business Faculty Publications and Presentations

Institutional theory has generated considerable insight into fundamental issues within sport. This study seeks to advance Washington and Patterson’s review by providing an empirical review of institutional theory in sport. We follow Arksey and O’Malley’s scoping review protocol to identify 188 sport-related institutional studies between 1979 and 2019. Our review provides evidence regarding the state of institutional scholarship within sport via an analysis of authorship, year, journal, methodology, method, study population, and use of institutional constructs (legitimacy, isomorphism, change, logics, fields, and work). Rather than a hostile takeover or a joint venture proposed in Washington and Patterson’s review, the relationship …

The Pacific Sentinel: November/December 2021, Portland State University. Student Publications Board

The Pacific Sentinel

Editor: Vivian Veidt

Articles in this issue include:

• Letter From the Editor
• Police Resistance to Federal Vaccine Mandates
• COVID on Campus
• Death of the Damsel in Distress
• Game Night at the Dysfunctional Family
• Same Old Story, Different Title
• Socially Alive
• The 2021 Portland Book Festival
• PSU Student Feature: Nikki James
• Notes From Behind the Bar
• A Far Reach for Greater Idaho
• The Truth Pandemic

Faculty Senate Monthly Packet November 2021, Portland State University Faculty Senate

Faculty Senate Monthly Packets

The November 1, 2021 Monthly packet includes the November agenda and appendices and the Faculty Senate minutes and attachments from the meeting held October 4, 2021.

Considering Who Has Opportunities For Training And Advancement, 21cleo Research Team

21CLEO Research Project Blog Posts

The three working learners featured in this blog post represent contrasting experiences that help us to understand the level and quality of support from such mediators as has become evident in our research, and the resu Its on the careers of these learners. Al I names used are pseudonyms.

Data From: “Developing Strategies To Enhance Mobility And Accessibility For Community-Dwelling Older Adults”, Kate Hyun, Kathy Lee, Caroline Krejci

TREC Datasets and Databases

This study administered a survey to 146 lower-income adults in Dallas, TX, aged 55 and older, between February and June 2020. As affordable public transportation options target senior citizens age 65 and older, this study focused on older adults as aged 65 and over. However, we also recruited adults aged 55 to 64 to distinguish how emerging seniors differently perceive or perform transportation activities compared to current older adults. In a partnership with a local organization providing resources and information for older adults and family caregivers located in Dallas, we used snowball sampling by recruiting participants from Foster Grandparent Program …

A Multidimensional Framework For Understanding Refugee Poverty In The United States, Mitra Naseh, Miriam Potocky, Shanna L. Burke, Paul H. Stuart

School of Social Work Faculty Publications and Presentations

Background: The abrupt and unplanned nature of forced displacement usually leaves refugees with limited financial and social assets (Betts et al., 2017; Naseh et al., 2018). Moreover, forced displacement often interrupts refugees’ access to education and opportunities to invest in their human capital (Dryden-Peterson, 2011). These challenges together with other factors such as lack of familiarity with a new language, stigma and discrimination, and unfamiliarity with the job market can result in poverty among newly resettled refugees (Ekren, 2018; Lukasiewicz, 2017). This study aimed to build a multidimensional poverty framework for adult refugees with a specific focus on their …

Pedestrian Safety And Social Equity In Oregon, Josh Roll, Nathan Mcneil

PSU Transportation Seminars

Past research and planning has highlighted the existence of pedestrian injury disparities throughout the US and some local agencies have performed cursory analysis in Oregon. However, no statewide analysis of pedestrian injuries in Oregon has been completed to see how these injury outcomes differ by race and income.

This presentation aims to help better understand the factors that result in disparate pedestrian injury outcomes for different sociodemographic groups. This research uses data from a variety of sources to understand pedestrian injuries by social equity measures including income, poverty, race, ethnicity, disability and English proficiency. The authors conclude that Black, Indigenous …

Efficacy Of Curcumin Supplementation In Asthma: A Systematic Review And Meta-Analysis, Tabitha M. Grow, Adam Sadowski

PSU McNair Scholars Online Journal

Objective: Over 23 million people are affected by asthma in the United States and 262 million individuals globally. Asthma, if poorly controlled, is associated with significant morbidity as well as increased risk for mortality. Several complex inflammatory pathways and processes are involved leading to an increase in immune cell activation. Curcumin, the active constituent found in turmeric, has been studied in numerous in-vivo and in-vitro studies to generate anti-inflammatory effects in pulmonary diseases. More recently, an increase in clinical data has become available, and since the most recent review assessing the role of curcumin in pulmonary disorders, additional clinical …

"We Had To Rely On Each Other": Voices Of Latinx Foster Youth With Experiences In Care With Siblings, Isabella B. Ginsberg

PSU McNair Scholars Online Journal

Relationships between members of sibling groups have been found to impact well-being for children who enter foster care (Herrick & Piccus, 2005). Being placed in stranger foster care is often challenging and can be traumatic with children reporting confusion, worry, and loss of identity and sense of belonging (Herrick & Piccus, 2005, Unrau et al, 2008). While there is some research that explores the experiences of siblings groups in foster care and others separately that examines Latinx children in foster care, there is very little information that looks into the potentially unique experiences of Latinx individuals who were in care …

Japanese-English Code-Switching By Postwar Speakers In Contemporary America, Andre John Shepherd

Dissertations and Theses

In her examination of Japanese-English bilingualism in Toronto, Nishimura (1995b) demonstrated that second-generation Japanese-Canadians varied their speech dependent on the audience they were addressing. According to her, the Japanese-Canadians spoke primarily in English to fellow second-generation speakers, while maintaining conversations in Japanese with those who had spent their formative years in Japan. However, when addressing audiences composed of both groups, they switched back and forth evenly between the two languages.

Following research done by Woolard (1989) on the effects of societal influences on language, the state of the Japanese-Canadians can be related to the breakup of the ethnic enclaves in …

The Longitudinal Effects Of A Family And Sleep Supportive Intervention On Service Member Anger And Resilience, Shalene Joyce Allen

Dissertations and Theses

The vast majority of workplace intervention research on employee anger and resilience primarily focuses on individual-level strategies for mitigating employee anger and resilience outcomes in the workplace, with no studies having examined these outcomes with tangible occupational health interventions utilizing organizational-level techniques. Thus, the current study extends the literature on how to provide improvements in employee anger and resilience using higher system and organizational change mechanisms by providing evidence-based support for the effectiveness of a Total Worker Health® intervention, referred to as the Family and Sleep Supportive Intervention Training (FaSST). This approach employs both health protection and health promotion strategies …

God-Talk In Catholic High Schools: Theology Teachers Doing Theological Education For And With Religiously Diverse Student Populations, David Michael Avram Gregory

Dissertations and Theses

High school students deserve educations that honor and respect their cultural positionalities, of which religious beliefs are frequently an integral part. Almost 25% of students in Catholic high schools identify as non-Catholic, but the U.S. Catholic bishops have mandated that Catholic secondary theological education (through their 2008 Doctrinal Elements of a Curriculum Framework for the Development of Catechetical Materials for Young People of High School Age) be catechetical. In writing and promulgating this document, the bishops presupposed that Catholic schools' students are Catholic, or (should) desire to become Catholic. For decades, scholars have critiqued catechesis as an inappropriate mode …