Digital Commons Network^™

Oregon State Rank Assessment For Meadow Lomatium (Lomatium Pastorale), Nora Dunkirk

Institute for Natural Resources Publications

Oregon state conservation status assessment for meadow lomatium (Lomatium pastorale) using NatureServe methodology, 2024.

Pathways To Social Mobility: Examining Trades As A Career Path For Formerly Incarcerated Individuals, June Jenkins

Dissertations and Theses

Obtaining stable, paid employment is crucial for successful reentry into the community after incarceration, however, formerly incarcerated individuals face extensive barriers when entering the workforce. Trades may present a uniquely attainable career path for this population due to relatively low barriers to entry. To date, there is a lack of research investigating experience-based perspectives on the viability of trades training programs and trades careers in facilitating prisoner reentry. This study employs semi-structured qualitative interviews to investigate perspectives on trades as a career path for formerly incarcerated individuals as well as barriers to accessing and attending trades training programs. Interviewees include …

Digital Trace Data And Demographic Forecasting: How Well Did Google Predict The Us Covid-19 Baby Bust?, Joshua Wilde, Wei Chen, Sophie Lohmann, Jasmin Abdel Ghany

Urban Studies and Planning Faculty Publications and Presentations

At the onset of the first wave of COVID-19 in the United States, the pandemic's effect on future birthrates was unknown. In this paper, we assess whether digital trace data—often touted as a panacea for traditional data scarcity—held the potential to accurately predict fertility change caused by the COVID-19 pandemic in the United States. Specifically, we produced state-level, dynamic future predictions of the pandemic's effect on birthrates in the United States using pregnancy-related Google search data. Importantly, these predictions were made in October 2020 (and revised in February 2021), well before the birth effect of the pandemic could have possibly …

The Protective Effects Of Perceived Partner Responsiveness On Service Members' Drinking And Health Outcomes, Julia Maria Oosi Lynch

Dissertations and Theses

Stress is a known predictor of various adverse health behaviors and outcomes, such as poorer physical health, injuries, and mental well-being. Specifically, stressful events, including minor daily hassles, as well as major life changes and pressures that are perceived negatively, can lead to experiences of psychological distress. Psychological distress is commonly defined as symptoms of anxiety and depression, including worry, sadness, and hopelessness. These concerns are particularly acute for military families, who experience a unique set of stressors and loneliness due to deployments and separation, long shifts, and frequent relocations. Those experiencing psychological dFreistress are also more likely to engage …

Oregon State Rank Assessment For Rocky Mountain Red Fox (Vulpes Vulpes Macroura), Eleanor P. Gaines

Institute for Natural Resources Publications

Oregon state conservation status assessment for Rocky Mountain red fox (Vulpes vulpes macroura) using NatureServe methodology, 2024.

Enhancement Of Mechanical Properties Of Pcl/Pla/Dmso2 Composites For Bone Tissue Engineering, Kyung-Eun Min, Jae-Won Jang, Cheolhee Kim, Sung Yi

Mechanical and Materials Engineering Faculty Publications and Presentations

Bone tissue engineering shows potential for regenerating or replacing damaged bone tissues by utilizing biomaterials renowned for their biocompatibility and structural support capabilities. Among these biomaterials, polycaprolactone (PCL) and polylactic acid (PLA) have gained attention due to their biodegradability and versatile applications. However, challenges such as low degradation rates and poor mechanical properties limit their effectiveness. Dimethyl sulfone (DMSO₂) has emerged as a potential additive to address these limitations, offering benefits such as reduced viscosity, increased degradation time, and enhanced surface tension. In this study, we investigate tailored composites comprising PLA, PCL, and DMSO₂ to enhance mechanical …

Examining Driver Injury Severity In Motor Vehicle Crashes: A Copula-Based Approach Considering Temporal Heterogeneity In A Developing Country Context, Shahrior Pervaz, Tanmoy Bhowmik, Naveen Eluru

Civil and Environmental Engineering Faculty Publications and Presentations

Using data from a developing country, the current study develops a copula-based joint modeling framework to study crash type and driver injury severity as two dimensions of the severity process. To be specific, a copula-based multinomial logit model (for crash type) and generalized ordered logit model (for driver severity) is estimated in the study. The data for our analysis is drawn from Bangladesh for the years of 2000 to 2015. Given the presence of multiple years of data, we develop a novel spline variable generation approach that facilitates easy testing of variation in parameters across time in crash type and …

Ultrasonic Cigarettes: Chemicals And Cytotoxicity Are Similar To Heated-Coil Pod-Style Electronic Cigarettes., Esther E. Omaiye, Wentai Luo, Kevin J. Mcwhirter, Prue Talbot

Civil and Environmental Engineering Faculty Publications and Presentations

Our purpose was to test the hypothesis that ultrasonic cigarettes (u-cigarettes), which operate at relatively low temperatures, produce aerosols that are less harmful than heated-coil pod-style electronic cigarettes (e-cigarettes). The major chemicals in SURGE u-cigarette fluids and aerosols were quantified, their cytotoxicity and cellular effects were assessed, and a Margin of Exposure risk assessment was performed on chemicals in SURGE fluids. Four SURGE u-cigarette flavor variants ("Blueberry Ice," "Watermelon Ice," "Green Mint," and "Polar Mint") were evaluated. Flavor chemicals were quantified in fluids and aerosols using gas chromatography/mass spectrometry. Cytotoxicity and cell dynamics were assessed using the MTT assay, live-cell …

A Place To Rest My Soul: How A Doctoral Student Of Color Group Utilized A Healing-Centered Space To Navigate Higher Education, Jessica I. Ramirez

School of Social Work Faculty Publications and Presentations

Students of Color have historically faced explicit and implicit forms of discrimination and oppression in educational settings. Unfortunately, not much has changed over the decades as Students of Color continue to experience white supremacy and other systems of oppression. As Students of Color enter graduate school, there are often fewer Students of Color, making these educational settings isolating and hostile. These experiences often encompass white supremacist policies, practices, and remarks that negatively impact Students of Color. With this in mind and as someone who identifies as a Chicana who was once in a doctoral program, I questioned how doctoral Students …

Latinos' Intimate Partner Violence, Abuse, And Interventions: Developing A Latcrit Analysis And Critique, Adrian Luis Manriquez, Eric S. Mankowski

Psychology Faculty Publications and Presentations

The paper utilizes LatCrit and critical psychology perspectives in order to review and critique the literature on Latinos' intimate partner violence and abuse and intervention programs. LatCrit theories are described and reviewed, and then applied to the literature on IPV predictors among Latinos. The review demonstrates that the research literature on the predictors, correlates, and antecedents of Latino males' IPV behaviors focuses largely on the individual level of analysis, and consequently suffers from three main limitations: use of deficit models in research; decontextualized assessment and evaluations of IPV; neglect of higher levels of analysis influencing IPV in Latinx communities. Implications …

Flood Vulnerability In Ho Chi Minh City, Vietnam, Hue Hong Duong

Dissertations and Theses

Flooding is the most common natural disaster globally, accounting for about 47% of all recorded events. It disproportionately affects the most vulnerable populations. The main goal of this dissertation is to conduct a comprehensive vulnerability assessment that can inform decision-making in flood risk management in the coastal megacity of Ho Chi Minh City, located in a low-lying area in south Vietnam. Despite contributing more than one fifth of the country's GDP, this city remains particularly susceptible to the adverse impacts of extreme weather conditions, making vulnerability analysis crucial.

The literature review carried out as part of this dissertation underscores the …

Conchas, Coloring Books, And Oxnard: Using Critical Race Counterstorytelling As A Framework To Create A Social Justice Coloring Book, Martín Alberto Gonzalez

Chicano/Latino Studies Faculty Publications and Presentations

I am from Oxnard, California, a predominantly Latinx city that is stereotyped as “too hood”, “too ghetto”, or “crime-infested” because of its low-income Brown people. Such negative narratives are so commonplace that they become believable, but we can challenge these oppressive narratives using critical race counterstorytelling. There are multiple ways to tell a story, and I pride myself in producing counterstories that are accessible and enjoyable to mi gente. So, to encourage stay-at-home practices and empower my own community during the COVID-19 pandemic, I created a social justice coloring book with the help of artistic friends and local Oxnard Latinx …

The Formation Of A Dialect: An Examination Of The History, Characteristics, And Evolutions Of Los Angeles Vernacular Spanish, Lianna Perry Fountain

Dissertations and Theses

Los Angeles Vernacular Spanish (L.A.V.S) or Español Vernacular de Los Àngeles is a non-standard regional dialect of Spanish rooted in the history and culture of Los Angeles Country, California. It is a sub-dialect of Chicano Spanish which has mainly existed in the Southwestern U.S for centuries. It relates to other varieties of U.S Spanish that have been influenced by macro-dialects other than Mexican Spanish. Like other forms of U.S Spanish, L.A.V.S has long been considered an imperfect manner of speaking or poorly formed Spanish instead of a dialect due to language contact with English. However, new dialects and languages are …

Toward Queer Potentialities In Child And Youth Care, Bobbi Ali Zaman, Ben Anderson-Nathe

Women, Gender, and Sexuality Studies Faculty Publications and Presentations

Arguably, from the invention of adolescence at the beginning of the 20th century, developmental theory has served as the foundation of disciplinary study and professional practice with children and youth across the global West. Despite their founders’ assertions that development is culturally constructed, in educational and youth work practice contexts stage-based trajectories of normative human growth are largely erroneously accepted as ahistorical, apolitical, naturally occurring, and universally applicable. This paper presents critiques of developmentalism from historical, reconceptualist, and queer perspectives, calling into question the underlying principles of normalcy and abnormality that run through the developmental project. We pay particular attention …

Toxicity Of Waterpipe Tobacco Smoking: The Role Of Flavors, Sweeteners, Humectants, And Charcoal, Nada O F Kassem, Robert M. Strongin, Andrea M. Stroup, Marielle C. Brinkman, Ahmad El-Hellani, Hanno C. Erythropel, Arash Etemadi, Maciej L. Goniewicz, Eleanore G. Hansen, Noura O. Kassem, Multiple Additional Authors

Chemistry Faculty Publications and Presentations

Waterpipe tobacco (WPT) smoking is a public health concern, particularly among youth and young adults. The global spread of WPT use has surged since the introduction of pre-packaged flavored and sweetened WPT, which is widely marketed as a safer tobacco alternative. Besides flavorants and sugars, WPT additives include humectants, which enhance the moisture and sweetness of WPT, act as solvents for flavors, and impart smoothness to the smoke, thus increasing appeal to users. In the United States (U.S.), unlike cigarette tobacco flavoring (with the exception of menthol), there is no FDA product standard or policy in place prohibiting sales of …

Water Throughout The Green Energy Transition: Hydrosocial Dimensions Of Coal, Natural Gas, And Lithium, Joshua J. Cousins, Alida Cantor, Bethani Turley

Geography Faculty Publications and Presentations

Energy transitions are reshaping hydrosocial relations. How they will be reshaped, however, depends on location and water's material relationship to other resources and industrial activities embedded within energy transitions. To highlight this, we focus on three different resources—coal, natural gas, and lithium—to signal how the water–energy nexus will be reworked in a transition away from fossil fuels. We examine the water–coal nexus as an example of a resource relationship that is transitioning out, or that is being moved away from in the green energy transition. Natural gas represents the “bridge fuel” used through the transition. Lithium illustrates a resource inside …

Working (Around/Within/Against) Prior Appropriation: Diverse Hydrosocial Practices To Secure Water For Rivers, Alida Cantor, Jillian Farley, Thien-Kim Bui, Zachary Boyce

Geography Faculty Publications and Presentations

Water scarcity in the Western US, through the lens of political ecology, can be understood as inextricably shaped by power dynamics, governance structures, and legal practices of resource allocation. Water allocation in the region is determined largely by the legal doctrine of Prior Appropriation, the 'first in time, first in right' principle. However, prior appropriation is fundamentally based in anthropocentric and settler colonial assumptions, and in light of drought, climate change, and shifting social and environmental values, the system has been critiqued as inadequate to meet contemporary water challenges. Despite challenging historical legacies, water managers in the Western US are …

The Integration Of Social Work Values And Principles In Police Work, Dasha Rhodes, Taylor Geyton, Jam Ost

School of Social Work Faculty Publications and Presentations

Persisting social inequities and injustices were spotlighted in the United States in 2020 after the murders of Breonna Taylor and George Floyd. A particular focus on the interactions of police officers and non-violent community members rallied a call to reallocate funds to social services better equipped to handle such situations, aptly named #defundthepolice. Many called for the need and placement of social workers in police agencies to curtail the negative interactions witnessed between police officers and communities of color, specifically with Black Americans. Across the nation, social workers are not always employed or readily available in police organizations. Therefore, instilling …

The Association Of Vitamin D Levels And Dental Caries In Older Adults: A Cross-Sectional Study., Man Hung, Amir Mohajeri, Mahsa Sadri, Elahe Khodabandeh, Ibrahim Zeitoun, Martin S. Lipsky

Institute on Aging Publications

Most research examining vitamin D and dental caries focuses on children and younger adults. This study investigated the association between vitamin D levels and dental caries in older adults using data from the United States National Health and Nutrition Examination Survey from 2011 to 2016.

Seguir Adelante: A Qualitative Exploration Of Latino Farmworkers' Work And Non-Work Resources, Faviola Robles Saenz

Dissertations and Theses

Precarious work sectors within the United States have relied on Black and Brown labor for many decades. More specifically, Latino immigrant workers have been an exploited community within many dangerous workforces but especially within the agricultural industry. They are a crucial population for the labor and economy of the U.S., yet Latino farmworkers report feeling expendable, being discriminated against, and being exposed to hazardous working conditions. Due to these experiences, scholars have explored the role non-work resources have in providing support for this community, their social networks being especially beneficial for them. However, research on the links between their work …

Analyzing The Legitimacy, Effectiveness, And Legacy Of The United Nations, Hunter Wade Calley

Dissertations and Theses

This thesis examines the legitimacy and effectiveness of the United Nations since its establishment, while also exploring the shortcomings of its predecessor, the League of Nations. The legitimacy of the United Nations and the role the organization plays in the world of international politics, the flaws of the UN Security Council, and the impact of the Cold War on the legitimacy and processes of the United Nations are especially highlighted throughout this thesis.

The successes and shortcomings of the United Nations are best understood given the historical context of the League of Nations, the organization founded to bring world powers …

Developing And Testing Low-Cost Air Cleaners For Safer Spaces During Wildfires, Brett W. Stinson, Elliott T. Gall

Mechanical and Materials Engineering Faculty Publications and Presentations

Air cleaning reduces indoor exposure to fine particulate matter (PM2.5) during wildfire smoke events. However, resource and cost constraints may limit access to air cleaning during such an event, as both commercial devices and the higher-rated MERV filters that do-it-yourself (DIY) assemblies typically rely upon tend to be expensive and in short supply. With these constraints in mind, we developed and evaluated several configurations of a novel, DIY air cleaner that uses common household fabrics as filtration media. Clean air delivery rates (CADRs) of the devices were experimentally evaluated in two ways: first, with independent measurements of flowrates and single …

Oregon State Rank Assessment For Disappearing Monkeyflower (Erythranthe Inflatula), Lindsey K. Wise

Institute for Natural Resources Publications

Oregon state conservation status assessment for Disappearing monkeyflower (Erythranthe inflatula) using NatureServe methodology, 2024.

Crown Shy, Laura Francesca Kincaid

Dissertations and Theses

Crown Shy explores the ripple effects of inheritance--somatic, psychological, and material--and how such inheritance constellates into our adult relations and relating. In three parts, the text undermines nuclear family imaginings, first by pulling them out by the root, and later through radical practice, formal constraint, and syntactic ambiguity. By studying the natural world--the organizing principles of trees, insects, and flowers--Crown Shy attempts to glean strategy from evidence of what is already thriving. Reluctantly lyrical, the text quietly deplores the ramifications of commercial agriculture, including the speaker’s own family farm and ancestral homestead. With the weight of this origin point, …

The Influence Of Eyewitnesses And Police Tip Line Reports: An Exploratory Case Study Of A 2005 Homicide, Abigail Rose Torres

Dissertations and Theses

Public tip lines provide the public to provide information [sic] to the police when there is an ongoing investigation. These public tip lines could increase investigations where the public is being made aware of the investigation, increasing the amount of information being brought forward. Research focuses on how tips reporting is similar to eyewitnesses in that individuals recall information. The literature illustrates how the media can influence the tips. The study is an exploratory content analysis looking at potential themes or patterns that emerged from analyzing the tips and patterns of the tip line and media files related to an …

Framework And Methodology For Risk-Based Bridge And Tunnel Asset Management: Objective Risk Assessment And Network Level Evaluation, David Y. Yang, Arash Khosravifar, Diane Moug, Avinash Unnikrishnan

Civil and Environmental Engineering Faculty Publications and Presentations

This report presents the results of the project on establishing a general framework and methodology for risk-based bridge and tunnel asset management. The research was carried out at Portland State University in collaboration with engineers and officials at Oregon Department of Transportation (ODOT) and Federal Highway Administration (FHWA). The primary goal of the research is to achieve risk-based transportation asset management based on (a) objective and consistent risk assessment and (b) effective prioritization and optimization of intervention strategies. Volume I of this report presents methods and findings in the base phase (Phase I) of the project, which is focused on …

Short-Term Time-Series Observations Of Phytoplankton Light-Absorption And Productivity In Prydz Bay, Coastal Antarctica, Sarat C. Tripathy, Anvita U. Kerkar, P. Sabu, Sunil K. Padhi, Sudarsana R. Pandi, Amit Sarkar, Bhaskar V. Parli, Rahul Mohan

Biology Faculty Publications and Presentations

The optical characteristics of coastal Antarctic waters exhibit complexity due to the dynamic hydrography influenced by meltwater intrusion, which alters nutrient levels, thermohaline structure, and optically active substances (OAS) regimes. Studies on bio-optical variability and its implications on phytoplankton productivity (PP) are scanty in coastal polar regions. On this backdrop, time-series measurements (72 h at 6 h intervals) of bio-optical properties such as phytoplankton biomass (chlorophyll-a), absorption (aph), and total suspended matter (TSM) concurrently with PP were measured to understand their interplay and variability in relation to the ambient physicochemical settings in the under-sampled Prydz Bay, coastal Antarctica. Our findings …

Oregon State Rank Assessment For Midget Quillwort (Isoetes Minima), Lindsey K. Wise

Institute for Natural Resources Publications

Oregon state conservation status assessment for midget quillwort (Isoetes minima) using NatureServe methodology, 2024.

When Overextended Surface Allocation Turns To Groundwater: A Q Methodology Of Well Users In Oregon’S High Desert, Melissa Haeffner, Janet Cowal, Brandy Walker, Clare Mcclellan

Environmental Science and Management Faculty Publications and Presentations

As legal battles over surface water allocation in Klamath County, Oregon, USA have gained national attention, earning the name “Water Wars,” authorities have been increasingly turning to groundwater to compensate for water shortfalls. This case study aims to identify the nuanced perspectives of household groundwater well users who are affected by groundwater extraction. Using Q methodology, we uncover groundwater well users’ perceptions and to what extent they think water problems are dealt with fairly. We identify four water perspectives that differ in the degree to which respondents prioritize clean water accessibility, industry accountability, individual responsibility for water management, and trust …

Lithium And Water: Hydrosocial Impacts Across The Life Cycle Of Energy Storage, James J. A. Blair, Noel Vineyard, Dustin Mulvaney, Alida Cantor, Ali Sharbat, Kate Berry, Elizabeth Bartholomew, Ariana Firebaugh Ornelas

Geography Faculty Publications and Presentations

As a key ingredient of batteries for electric vehicles (EVs), lithium plays a significant role in climate change mitigation, but lithium has considerable impacts on water and society across its life cycle. Upstream extraction methods—including open-pit mining, brine evaporation, and novel direct lithium extraction (DLE)—and downstream processes present different impacts on both the quantity and quality of water resources, leading to water depletion and contamination. Regarding upstream extraction, it is critical for a comprehensive assessment of lithium's life cycle to include cumulative impacts related not only to freshwater, but also mineralized or saline groundwater, also known as brine. Legal frameworks …