Digital Commons Network^™

K-12 Racial Equity Work In The Predominantly White Pacific Northwest: Interracial Conversations, Counter-Stories, And Considerations, Bradley Justin Parker

Dissertations and Theses

K-12 public education in the United States, post Brown v. Board of Education (1954), has historically maintained a predominantly White teaching force, and has persistently underserved students of Color in terms of academic, social, and emotional outcomes. Additionally, K-12 school-based racial equity work that strives to address the operation of racism is inconsistent, difficult to measure, and has not demonstrably created more racially equitable experiences or outcomes for students or educators of Color. In this project, I critically explore K-12 school-based efforts towards more racial equity in the predominantly White Pacific Northwest, and I take an intentional and critical look …

Applying Biomimetic Passive Dynamics To A Quadruped Robot Leg, Emma Krnacik

Dissertations and Theses

The study of synthetic nervous systems is an emerging field within biomimetic robotics as an alternative to more classic control techniques. As the modeling of these nervous systems becomes more accurate, it is important to note that the nervous system and physical system co-evolved and continue to operate in an interdependent fashion. Many legged robots, including the existing quadruped in the AARL, have leg systems that may have similar geometrical properties to that of a mammal, but have significantly different dynamic properties. This paper presents a method for designing a limb so that the passive dynamics more accurately represent that …

Splitting Gaussian Densities To Minimize Variance Along A Direction Of Nonlinearity, Amit Kumar

Dissertations and Theses

Nonlinear functions of random vectors are frequently used in signal processing, and especially in state space tracking algorithms. Many of these algorithms require a way of estimating the probability density of the state vector at the output of the nonlinear function. Algorithms derived from Kalman Filter, such as Extended Kalman Filter and Unscented Kalman Filter, are popular choices for this, but they only estimate mean and covariance which may be insufficient to describe the non-Gaussian densities. On the other hand, Monte Carlo methods such as particle filters can be more capable but require much more computation. Gaussian mixture filters aim …

Domain Knowledge As Motion-Aware Inductive Bias For Deep Video Synthesis: Two Case Studies, Long Mai

Dissertations and Theses

Deep neural networks have been part of many breakthroughs in computer graphics and vision research. In the context of visual content synthesis, deep learning models have achieved impressive performance in the image domain. However, adapting the successes of image synthesis models to the video domain has been difficult, arguably due to the lack of sufficiently strong inductive biases that encourage the models to capture the temporal-dynamic nature of video data. Inductive bias refers to the prior knowledge incorporated into the learning models to explicitly drive the learning process toward the solutions that capture meaningful structures from data, which is critical …

Most Recent Rupture On The Boulder Creek Fault Triggered Bedrock Landsliding In The Nooksack Watershed, Whatcom County, Washington, Abigail Catherine Underwood

Dissertations and Theses

Catastrophic bedrock landslides with volumes ranging from 10⁶ to 10⁸ m³ contribute to rapid landscape evolution, often resulting in erosion rates that exceed the long-term average rates caused by tectonic uplift. Understanding the spatiotemporal trends of large bedrock landslides helps us understand previous drivers of landscape evolution as well as predict how the landscape will respond in the future. The Nooksack Watershed, Whatcom County, Washington, is particularly susceptible to large slope failures because of its high relief, seismic activity, local geology, and relatively abundant precipitation. Specifically, folded and faulted bedrock structures conducive to landsliding in addition to …

Urban Nesting Biology, Population Viability And Ecology Of The Willow Flycatcher, Empidonax Traillii, Stephanie Alexandra Byrne Doorly

Dissertations and Theses

Reproductive success, in any species, relies both on the habitat utilized to reproduce and on the successful reproductive output of individual animals within a population. Populations in turn rely on the reproductive fitness of the individual. Whether populations remain stable, grow, or decline ultimately relies on the combined reproductive output of the individuals within that population.

We studied the Willow Flycatcher (Empidonax traillii; henceforth WIFL), a well-studied Neartic-Neotropical migrant passerine whose breeding range extends from the east to west coast of North America. Across much of their range, and in particular in the western regions, breeding population are …

Collective Proving Activity In A Synchronous Online Environment, Tenchita Alzaga Elizondo

Dissertations and Theses

Given the well documented fact students often struggle with proof and proof-related activity for various reasons, more educators have shifted to incorporating pedagogies involving collaborative learning given their benefits to student learning. However, there is still surprisingly little research focused on the nature of students' collaborative proving activity. Moreover, the recent COVID-19 pandemic, and subsequent shift to remote learning, forced educators and students to adapt and learn how to work within a new learning environment. In this dissertation project, I investigate how students engage in collaborative proving activity in a synchronous online introduction to proofs course. In the first paper, …

Critical Awareness, Reflection, And Action In Head Start Leadership: A Critical Consciousness Case Study Of Head Start Leaders, Christopher Pearce Agudelo

Dissertations and Theses

Diverse families with preschool-aged children are at an enhanced risk of marginalization in the United States. Whether they are of a different race, level of ability, gender, or socioeconomic background, they need early childhood leaders and educators who can focus on caring for their children. In this exploratory qualitative study, I conducted five open-ended interviews with Head Start education managers--a similar position to a preschool Director or a K-12 Principal. The objective was to understand better how Head Start Education Managers attend to equity and inclusion via critical awareness, critical reflection, and critical action. I utilized the three-element construct of …

In Favor Of Bringing Game Theory Into Urban Studies And Planning Curriculum: Reintroducing An Underused Method For The Next Generation Of Urban Scholars, Brian Mcdonald Gardner

Dissertations and Theses

By looking at some historical examples of Urban Studies literature and theory (and a detailed dive into Neil Smith's "Toward a theory of gentrification…") this thesis makes the case that Game Theory has valid insights to add to the foundation of Urban Studies and Planning and should be included in Masters and Doctorate level curriculums. As a discipline Game Theory has revolutionized multiple other fields, and can be used both mathematically and/or non-mathematically. It is postulated below that the inclusion of Game Theory would help scholars and practitioners arrive at better outcomes. This case is made by reviewing various areas …

Short Warm-Side Wet-Bulb Temperature Distribution Tails Lead To Accelerated Increases In Extreme Threshold Exceedances Under Global Warming, Yianna Sotirios Bekris

Dissertations and Theses

Humid-heat extremes threaten human health and are increasing in frequency with global warming, so elucidating factors affecting their rate of change is critical. This thesis examines the role of historical (1985-2014) wet-bulb temperature distribution tail shape on the probability of wet-bulb temperature extreme threshold exceedances under 2°Celsius global warming. Analysis of global climate models and reanalysis reveals that non-Gaussian wet-bulb temperature distribution tails are common worldwide across extensive, spatially coherent regions. More rapid increases in the number of days exceeding the historical 95th percentile are projected in locations with shorter-than-Gaussian warm-side tails. Of the two primary components of wet-bulb temperature, …

An Assessment Model Of The Healthcare Entrepreneurship Ecosystem To Foster Solutions For Underserved Communities, Abdalilah Saleh Owaishiz

Dissertations and Theses

There are significant disparities in access to healthcare treatment and this study investigates the healthcare entrepreneurship ecosystem and the challenges and considerations associated within. There is a lack of research on how to evaluate and assess the healthcare entrepreneurship ecosystem especially when applying multi-criteria decision-making (MCDM) methods. The Hierarchical Decision Model (HDM) has been utilized to identify several perspectives and factors grouped under them by the expert’s quantification. This research concentrates on underserved communities because that is where the biggest needs and impact can be made to support achieving health equity and universal health coverage. The findings of this research …

Effect Of Body Mass Index, Testosterone, And Insulin On Breast Cancer: A Mendelian Randomization Study And Investigation Of Selection Bias, Kezhen Fei

Dissertations and Theses

BACKGROUND: Female breast cancer is the most studied cancer, and the second leading cause of cancer death in women, whose aetiology is still not completely clear. The parallel increase of incident obesity and breast cancer in women worldwide raises the question of the role of adiposity, measured by body mass index (BMI), and of major anabolic hormones, such as insulin and testosterone, on breast cancer. Observational studies are open to confounding making it difficult to clearly demonstrate causal effects. Several mendelian randomization (MR) studies have shown inverse association of BMI with breast cancer. To assess selection bias in MR …

An Experimental Study Of Norton And Thule Cooking Pot Performance, Caelie Marshall Butler

Dissertations and Theses

Ceramic technology was adopted by hunter-gatherers of the Paleo-Inuit Norton tradition in the Western Arctic between 2800 and 2500 years B.P., corresponding with an increase in the use of aquatic resources. Pottery production and use continued until approximately 1,500 BP, and resumed during the Neo-Inuit Birnirk and Thule periods, approximately 1,350 years BP. The technical characteristics of Norton and Thule ceramics suggest they performed differently when used for cooking, with Norton ceramics best suited for cooking using direct or suspended heat, and Thule ceramics best suited for indirect heat. Prior experimental archaeological research has focused on Thule ceramics, with limited …

Understanding Distruptive Change In Health Care: Perspectives From The Front Lines Of Covid, Wendy Vaughon

Dissertations and Theses

COVID-19 dramatically stressed an already overburdened healthcare system. Physicians, susceptible to burnout, bore the brunt of this threat as frontline providers. Limited data are available describing how the pandemic may have affected physician perceptions and beliefs, including experiences of burnout and plans to exit the field. Reddit, a social media website, allows physicians the ability to interact with their peers pseudonymously on a purpose-driven, publicly viewable subreddit (r/medicine). By providing a space for “physicians and other medical professionals” to interact, it is possible to observe unfiltered discourse.

This dissertation explores physician-peer discourse on Reddit prior to and during the COVID-19 …

System Design For The Quantification Of Microbial Motility In Extreme Environments, Megan Marie Dubay

Dissertations and Theses

Motility of microorganisms is understudied but provides useful insights into their behavior. Organisms' ability to move autonomously changes how they interact with their environment--finding nutrients, interacting with other organisms, and avoiding unfavorable conditions. Understanding motility features can also be used to identify specific species, such as the identification of Vibrio cholerae in human samples. Motility might also be used as evidence of life existing in even the most extreme environments on Earth, and possibly beyond. Specialized microscopy systems can be required to examine the motility of microorganisms due to the nature of the environments to which the instruments are exposed. …

Dress And Identity: Using Sartorial Artifacts To Explore Identity At Fort Vancouver, Dana Marie Sukau

Dissertations and Theses

How an individual dresses is an outward expression of their identity, which impacts how they are perceived by others and their daily interactions. By modifying their dress an individual can better adapt to changing social situations. The Pacific Northwest fur trade brought people of varied backgrounds together at frontier forts like the Hudson's Bay Company owned Fort Vancouver, located in modern day Vancouver, Washington. In these areas of culture contact social relations were frequently changing, and by adapting their dress an individual could put on various "social skins" differentially influencing their daily interactions (Loren 2001). Through the perspective of practice …

Multimodal Imaging Of Structural Concrete Using Image Fusion And Deep Learning, Sina Mehdinia

Dissertations and Theses

Concrete structures may be exposed to a variety of loads and environments during their service life. Non-destructive testing (NDT) techniques can be helpful in evaluating the condition of a structure. Imaging provides a visual representation of the interior of concrete and its condition non-destructively. Ground penetrating radar (GPR) and ultrasonic echo array (UEA) using electromagnetic and stress waves, respectively, provide the data that can be used to reconstruct an image. In this PhD dissertation, image reconstruction and fusion algorithms, simulation, and a deep learning model were investigated with the goal to lay the foundation for enhanced imaging applications for concrete. …

Model.Disclose(): Examination Of Obsessive-Compulsive Disorder Disclosure At Work, Timothy Allen Carsey

Dissertations and Theses

Research focused on Identity Management (IDM) in the workplace has explored the experiences of people with many different stigmatized identities (e.g., sexual orientation, gender identity, race/ethnicity, religiosity); however, research has only recently begun to explore IDM of mental illness in the workplace. One such identity, Obsessive-Compulsive Disorder (OCD), has remained particularly unexplored. Individuals with mental illnesses, such as OCD, experience unique consequences with their concealment and disclosure process. Specifically, OCD has both cognitive and behavioral components, and, the behavioral component of OCD can demonstrate to coworkers visible actions that are seen as "not normal" or "awkward," potentially unintentionally signaling the …

Curating Conflict: The Material Record Of The Philippine-American War At The Oregon Historical Society, Silvie M. Andrews

Dissertations and Theses

1898 marked the beginning of U.S. colonialism in the Philippines and the formation of the Oregon Historical Society (OHS), an organization that would later inherit a vast collection of Philippine and Spanish war booty from the defunct Battleship Oregon Museum. This thesis will explore the meaning of this war booty by recreating the context around its collection, accession, interpretation, and later descent into obscurity, drawing on the Battleship Oregon Collection of the OHS Research Library and institutional records of the OHS Museum as well as secondary sources that explore the colonial context around museum collecting. The first chapter will show …

Spatial Analysis Of Burn Severity And Streamflow Response In The Western Conus, Will Brendan Long

Dissertations and Theses

Wildfire increases the magnitude of runoff in catchments, which can lead to the degradation of ecosystems, risk to infrastructure, and loss of life. The Labor Day Fires of 2020 provided an opportunity to compare multiple large and severe wildfires with the objective of determining potential changes to hydrologic processes in Oregon Cascades watersheds. Geographic information systems (GIS) were implemented to determine the total percentage burned and percentage of high burn severity class of six watersheds on the west-slope of the Oregon Cascade Range. In addition, two control watersheds were included to contrast the influence of climatic effects. Spatial arrangement of …

Investigation Of Basal Imnaha Basalt Flows And Their Relationship To The Picture Gorge Basalt Of The Columbia River Basalt Group, Luke James Fredenberg

Dissertations and Theses

The lower American Bar flows (AB 1 and 2) of the Imnaha Basalt have previously been observed as being chemically similar to those of the Picture Gorge Basalt (PGB). Previous age data separate eruption of the Imnaha and Picture Gorge Basalts by approximately 1.5 Ma, precluding the possibility of a genetic link between the two basalt units. New age data for the Picture Gorge Basalt has expanded the eruptive timeframe and the earliest flows coincide with the eruption of the Imnaha Basalt, making it possible that the lower American Bar flows of the Imnaha Basalt and the Picture Gorge Basalt …

Health Literacy And People Diagnosed With Mental Illness, Beckie Child

Dissertations and Theses

Health literacy is a well-studied concept that has a large literature base. Yet, little is known about health literacy and people diagnosed with mental illnesses, and even less health literacy research speaks to people diagnosed with mental illness. I used a framework and approach of lived experience of psychiatric diagnosis and psychiatric survivor research to conceptualize and inform the study. It explores health literacy with people diagnosed with mental and physical health diagnoses using a small quantitative survey, focus groups, and an individual interview. The findings suggest that health literacy is a dynamic and complex construct that interacts with the …

Reconceiving The Relationship Between The Built Environment And Walking Behavior: Examining The Samples, Scales, And Methods In Travel Behavior Research, Jaime Pablo Orrego-Oñate

Dissertations and Theses

This dissertation aims to formulate a mechanism for the relationship between the urban form and walking choice that can be consistent across contexts. The motivation is the lack of concordant results in the magnitude of the environmental influence on walking choice in urban areas found in the literature. The dissertation identifies a series of limitations in previous research that could cause mixed results in the magnitudes of the association. This research elaborates an approach to overcome these limitations by proposing a mechanism of the activity density over walking modal share by controlling for trip distance distribution. The aim is an …

Does Instructional Autonomy Matter? Exploring Job Satisfaction For Math And Non-Math Teachers In Low, Middle, And High Ses Schools, Hannah Sean Ellefritz

Dissertations and Theses

Throughout the 2000s, standards-based education policies decreased the autonomy of public schools across the U.S., deprofessionalizing educators and limiting their participation in the development of curriculum and instructional policy. Many education scholars argue that, rather than professionals with specialized skills and knowledge, standards-based reforms position teachers as technicians, accountable for measurable output in accordance with externally imposed standards. This literature suggests that such education policies may have implications for teachers’ job satisfaction, especially those working in schools or subject fields that are particularly susceptible to standardized curriculum and accountability procedures. Using nationally representative data from the Teaching and Learning International …

An Analysis Of The Strengths And Weaknesses Of The Tulsa Remote Program, As An Effective Economic Development Strategy, Kristen J. Padilla

Dissertations and Theses

Cities do not exist in a vacuum. They are in constant competition for talented, educated individuals and growing, innovative businesses -even if that competition is not explicit or specific. Traditionally cities have been left with two economic development paths to help diversify their economies: attract talent but without jobs, or attract business but without a strong talent pool. However, due to technological advancements, exacerbated by the pandemic, a new and growing workforce that can work from anywhere has emerged, remote workers. This talent pool shifts traditional economic development attraction strategies from city to industry to city to talent.

Many remote …

A Snapshot Of Japanese Family Conversation And Language Maintenance Effort, Yuya Sano

Dissertations and Theses

This research examined what dominant speech style Japanese family members utilize by analyzing their conversations at home. In addition, the research conducted the Parent Interviews to find out what efforts the parents consistently make to develop and maintain their children's Japanese ability in terms of Japanese formal speech style.

The purpose of this research is twofold: (1) to examine the dominant speech style of Japanese during at-home conversations among Japanese family members and (2) to learn about the parents' effort to develop their children's Japanese ability. In order to conduct this research, two kinds of data were collected: Family Conversation …

Post-Fire Erosional And Hydrological Processes Promoting Debris Flow Initiation In A Douglas Fir And Western Hemlock Forest In The Riverside Burn Area, Oregon, Morena Nicole Hammer

Dissertations and Theses

Post-fire debris flows initiated by overland flow in the Pacific Northwest (PNW) are largely undocumented. Instead, debris flows are typically initiated by shallow landslides that result in a mud slurry of water and sediments traveling downhill under the force of gravity. However, because of the Fall 2020 fires in Oregon, the typical initiation style and erosional patterns in burned catchments may have changed because of unusually high burn severity. Due to the intensity of these fires, we set out to determine how hydrologic processes and erosion occurred, when they occurred, and what process was primarily responsible for the erosion that …

Examining Emergency Citizen Response To The Covid-19 Pandemic: Emergent Groups Addressing Food Insecurity In Portland, Oregon, Aliza Ruth Tuttle

Dissertations and Theses

Emergency response agencies commonly focus on how hard infrastructure will interact with extreme climatic and geologic events: bridges during an earthquake and buildings following a tornado, for example. Peoples' actual experience of these extreme events vary, however, based on socially constructed consequences of natural hazard events and their interaction with a depleted or robust social safety net.

Previous research shows people living with depleted social safety nets and who experience a natural hazard event are likely to help where they see disaster. Individuals consistently form groups, called emergent groups, to organize their efforts. This research explored emergent groups that formed …

A Typology Of Foster Home Quality Elements In Relation To Foster Youth Mental Health, Paul Sorenson

Dissertations and Theses

Foster care has been one of the primary interventions in society's efforts to address child maltreatment. The foster parents and foster homes follow a process of certification intended to ensure that maltreated children be placed in substitute care that supports and encourages positive outcomes. One of the outcomes of principle concern is mental health. Few studies have been conducted that explore the makeup of certified foster homes with respect to the cumulative impact of multiple indicators of quality on mental health outcomes of foster youth.

This study sought to identify a typology of foster homes based on theorized indicators of …

What's Care Got To Do With It? Expulsion Practices In Family Child Care, Josephina Paulina Emmrich

Dissertations and Theses

Expulsion of children under five years old in early childhood care and education settings is a problem, especially in family child care programs with the highest expulsion rates across early childhood care and education settings. Recently passed Oregon legislation prohibits expulsion in child care programs (Oregon SB 236, 2021). Influencing outcomes for young children and the family child care providers who work with them. Family child care programs are small businesses primarily run by women who work alone from their homes. Systemic inequities contribute to a lack of support and access to resources for family child care providers. These inequities …