Digital Commons Network^™

Thin Film Deposition Of Mop, A Topological Semimetal, Robert Browning, Paul Plachinda, Raj Solanki

Physics Faculty Publications and Presentations

MoP is a topological semimetal which has drawn attention due to its unique electrical and optical properties resulting from massless electrons. In order to utilize these properties for practical applications, it is necessary to develop a technique to produce high-quality, large-scale thin films of this 2D material. We report below our initial results of growth of MoP thin films using atomic layer deposition (ALD), where the film grows layer-by-layer. These films were grown on 5 cm × 5 cm silicon oxide coated Si wafers. Resistivity versus temperature measurements show that these films are metallic and includes a partial superconducting phase. …

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

PSU Transportation Seminars

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

High Prep Uptake And Objective Longitudinal Adherence Among Hiv-Exposed Women With Personal Or Partner Plans For Pregnancy In Rural Uganda: A Cohort Study, Lynn T. Matthews, Esther Atukunda, Moran Owembabazi, Christina Psaros, David Bangsberg, Multiple Additional Authors

OHSU-PSU School of Public Health Faculty Publications and Presentations

Background

In Uganda, fertility rates and adult HIV prevalence are high, and many women conceive with partners living with HIV. Pre-exposure prophylaxis (PrEP) reduces HIV acquisition for women and, therefore, infants. We developed the Healthy Families-PrEP intervention to support PrEP use as part of HIV prevention during periconception and pregnancy periods. We conducted a longitudinal cohort study to evaluate oral PrEP use among women participating in the intervention.

Methods and findings

We enrolled HIV–negative women with plans for pregnancy with a partner living, or thought to be living, with HIV (2017 to 2020) to evaluate PrEP use among women participating …

Exploring The Impact Of Interpersonal Trust On Health Outcomes In Rapidly Gentrifying Neighborhoods In Portland, Oregon, Julie T. Ha

PSU McNair Scholars Online Journal

Social determinants have been recognized to be significant factors contributing to the overall health outcomes of individuals. However, there is limited research on how these factors have directly impacted the mental and physical wellness of people in neighborhoods that are experiencing rapid gentrification. The objective of this study is to determine whether the present level of interpersonal trust between individuals in neighborhoods is associated with the mental and physical health outcomes among its residents. This quantitative study uses the Albina-Rockwood Neighborhood Promise Survey, which uses data from a random sample of families living in two rapidly gentrified neighborhoods in Portland, …

Survival In The City Streets: An Autoethnographic Analysis Challenging The Criminalization Of Urban Street Gangs, Robert Northman

PSU McNair Scholars Online Journal

To varying outcomes, many attempts have been made to understand and define urban street gangs. Though these understandings and definitions of gangs may vary, they almost always rely on criminality as at least one of the gang’s “purposes.” The author, a gang member for approximately thirty years seeks to contribute lived experiences to the conversation centered on gangs. This auto-ethnographic analysis of urban street gang culture seeks to highlight the author’s experiences as potential determinants of gang membership while also exacting the realities of some common myths and other misconceptions surrounding the urban street gang, including the criminalization thereof. The …

Multnomah County 2000-2016 Forest Carbon Inventory & Trends. Strategies For Maintaining & Increasing Carbon Storage On County Forestlands To Meet Regional Climate Goals, Anthony Z. Holmes

PSU McNair Scholars Online Journal

In attempting to meet the aims of the 2015 Climate Action Plan to reduce countywide CO2 emissions by 40% over 1990 levels by 2030 and 80% by 2050, Multnomah County has sought to better understand the role county forest lands play in mitigating greenhouse gas emissions, by conducting a forest carbon inventory and projection of carbon flux under a "business as usual" scenario for aboveground biomass. This report relies on two estimates for the 5 forest carbon pools recognized by the Intergovernmental Panel on Climate Change (IPCC), these include estimates published as part of the Oregon Forest Ecosystem Carbon Inventory …

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

PSU McNair Scholars Online Journal

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

The Effect Of Rhizophagus Intraradices Mycorrhizal Fungus On Iron Uptake Of Corn: A Global Overview On The Effects Of Climate Change On The Nutritional Content Of Crops, Caitlin R. Costello

PSU McNair Scholars Online Journal

Global iron deficiency is a major factor contributing to malnutrition and varied health conditions. One way to combat this is to maintain or increase the iron uptake of the globe’s major crops. Research has shown that certain types of mycorrhizal fungi can increase the nutrient uptake of plants. To further this research, we looked at the arbuscular fungi Rhizophagus intraradices and its potential relationship with the corn variety “Golden Bantam 8 Row”. This type of mycorrhizal fungi improves plant nutrition including the plant’s ability to source iron from the natural environment. Much of the iron found in the natural environment …

Defining Dementia-Friendly Communities From The Perspective Of Those Affected, Iris Alexandra Wernher

Dissertations and Theses

More and more communities across the globe are pledging to become more "dementia friendly," yet many initiatives lack direction as to what this pledge might entail. The intent of this qualitative study, conducted in the metropolitan area of Portland and several other cities in Oregon, was to better understand how communities can increase their dementia friendliness – from the perspective of people living with dementia and their care partners. The study further aimed to clarify if and how age- and dementia-friendly efforts can be integrated.

Twenty-five community-dwelling individuals living with dementia and their 25 informal carers participated separately in semi-structured …

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

Electrical and Computer Engineering Faculty Publications and Presentations

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

Understanding Backlash To Women's Rights Campaigns In Malawian Society With Lindsay Benstead, Lindsay J. Benstead

PDXPLORES Podcast

In this episode of PDXPLORES, Lindsay J. Benstead, Associate Professor of Political Science and Director of the Middle East Studies Center (MESC) at Portland State University discusses her recent publication, Explaining Backlash: Social Hierarchy and Men’s Rejection of Women’s Rights Reforms. Benstead draws on social position theory to explore the resistance of empowered groups to social reform and women’s empowerment, and how messaging campaigns intended to advance gender sensitive policies increase adverse reactions in society.

Click on the "Download" button to access the audio transcript.

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

Faculty Senate Monthly Packets

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

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

Complex Systems Faculty Publications and Presentations

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

Paternity Patterns In A Long-Term Resident Bottlenose Dolphin Community, Debbie Duffield, Randall Wells

Biology Faculty Publications and Presentations

Genetic analyses, initiated in 1984, have played a major role in our understanding of the structure and social relationships of the long-term resident community of common bottlenose dolphins (Tursiops truncatus) in Sarasota Bay, Florida (SBDC). One component of our ongoing study of the community’s social system involves using blood samples from periodic catch-and-release sampling for life history and health assessment studies, as well as skin from biopsy dart sampling studies and strandings, to investigate paternity and mating strategies in this community. These analyses, covering a span of four generations of calves, were originally based on chromosomes and protein electrophoresis, but …

Elementary Principal Leadership And Special Education: A Case Study In The United States, Vivian M. Garrison

Dissertations and Theses

School districts have called upon principals to build capacity for inclusive learning environments and prioritize the needs of an increasingly diverse group of students. A principal's work to effectively include students so they are part of the school community and have opportunities to achieve academically has been challenging. As the instructional leader of the school, principals have played an essential role by collaborating with teachers and specialists, removing obstacles to learning, and ensuring that teachers meet the needs of all learners in their classrooms. They have also been held accountable for knowing the laws, policies, and best practices to support …

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

Civil and Environmental Engineering Faculty Publications and Presentations

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

The China Balloon Incident: The Drama Within The Drama, Mel Gurtov

Political Science Faculty Publications and Presentations

The recent China Balloon Incident has all the appearance of high drama, though the heat is mainly provided by domestic politics rather than a strategic face-off of the U-2 or Cuba Missile Crisis variety. This is a drama in three acts. In Act 1, “Discovery”, the Biden administration went into action mode on finding that a Chinese “spy” balloon had crossed the US. An air force jet shot the balloon down, displaying Cold War-style toughness with China. In Act 2, “Evaluation”, new facts emerged that shed further light on the episode. Act 3, “Blaming”, involves mutual recriminations that obscure the …

Wage And Cost Study Of Oregon Assisted Living And Residential Care Providers, 2022, Ozcan Tunalilar, Sarah Dys, Paula Carder, Diana Jacoby

Institute on Aging Publications

Senate Bill 703 directed Oregon Department of Human Services (ODHS) to conduct a study of licensed residential care (RCF) and assisted living (ALF) facilities, including those with a memory care (MC) endorsement, to evaluate: a) Total cost to provide care to residents, b) the sufficiency of the Medicaid reimbursement paid to facilities to meet the total cost of care, and c) the average compensation paid to direct care workers by the facilities by geographic region. ODHS contracted with the Institute on Aging (IOA) at Portland State University (PSU) to conduct a study to achieve these three objectives. In the fall …

Raps Sheet, February 2023, Retirement Association Of Portland State

RAPS Sheet: Monthly Newsletter

No abstract provided.

Do Program Practices Matter For Mentors?: How Implementation Of Empirically Supported Program Practices Is Associated With Youth Mentoring Relationship Quality, Thomas E. Keller, Alison L. Drew, Carla Herrera, Hyuny Clark-Shim, Renée Spencer

School of Social Work Faculty Publications and Presentations

This study investigates how the implementation of program-level practices by formal youth mentoring programs is associated with the quality of youth mentoring relationships as contexts for youth development and also examines whether this connection is mediated by the mentor-staff working alliance. Using data from mentors (n = 542) participating in multiple programs (n = 55), multilevel path models examined hypothesized direct and mediated effects. Parallel analyses were conducted with assessments of program practices from staff (n = 219). Greater exposure to program practices was associated with higher ratings of mentoring relationship satisfaction, commitment, and security and lower …

Columbia River Rhyolites: Age-Distribution Patterns And Their Implications For Arrival, Location, And Dispersion Of Continental Flood Basalt Magmas In The Crust, Martin J. Streck, Vanessa M. Swenton, William C. Mcintosh, Matt Heizler

Geology Faculty Publications and Presentations

Columbia River province magmatism is now known to include abundant and widespread rhyolite centers even though the view that the earliest rhyolites erupted from the McDermitt Caldera and other nearby volcanic fields along the Oregon–Nevada state border has persisted. Our study covers little-studied or unknown rhyolite occurrences in eastern Oregon that show a much wider distribution of older centers. With our new data on distribution of rhyolite centers and ages along with literature data, we consider rhyolites spanning from 17.5 to 14.5 Ma of eastern Oregon, northern Nevada, and western Idaho to be a direct response to flood basalts of …

Older Adults In Action: Using Action Research To Address Neighborhood Change, Amie Thurber

School of Social Work Faculty Publications and Presentations

Older adults face distinct challenges amidst changing neighborhood conditions, yet also bring distinct resources to aid their communities. After considering the literature related to well-being in older adulthood, the effects of neighborhood change on older adults, and older adults and social action, this paper explores the experiences of older adults in the Neighborhood Story Project. This action research project engages a group of neighbors to identify a set of research questions about their community, conduct place-based inquiry, and take action based on their learning. This study considers the degree to which the Neighborhood Story Project constitutes a macro therapeutic intervention. …

Nanoscale Hafnium Metal-Organic Frameworks Enhance Radiotherapeutic Effects By Upregulation Of Type I Interferon And Tlr7 Expression, Eunseo Choi, Madeleine R. Landry, Nathan Pennock, Katherine Weinfurter, Multiple Additional Authors

Chemistry Faculty Publications and Presentations

Recent preclinical and clinical studies have highlighted the improved outcomes of combination radiotherapy and immunotherapy. Concurrently, the development of high-Z metallic nanoparticles as radiation dose enhancers has been explored to widen the therapeutic window of radiotherapy and potentially enhance immune activation. In this study, we evaluate folate-modified hafnium-based metal-organic frameworks (HfMOF-PEG-FA) in combination with imiquimod, a TLR7 agonist, as a well-defined interferon regulatory factor (IRF) stimulator for local antitumor immunotherapy. The enhancement of radiation dose deposition by HfMOF-PEG-FA and subsequent generation of reactive oxygen species (ROS) deregulates cell proliferation and increases apoptosis. HfMOF-PEG-FA loaded with imiquimod (HfMOF-PEG-FA@IMQ) increases DNA double-strand …

Developing A Framework For Holistic, Anti-Racist Perinatal Care With Roberta Hunte, Roberta S. Hunte

PDXPLORES Podcast

In this episode of PDXPLORES, PSU School of Social Work , Black Studies, and Women, Gender, and Sexuality Studies professor Roberta Hunte discusses the need for systems of holistic, anti-racist perinatal care for parents and their children and how her research is making strives to facilitate the establishment of those systems.

Audio captions are available as an additional file

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

Mechanical and Materials Engineering Faculty Publications and Presentations

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

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

Civil and Environmental Engineering Faculty Publications and Presentations

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

Racial Politics In The Contemporary Prison Society: The Importance Of Race And Ethnicity To Prison Social Organization, Arynn A. Infante, Stephanie J. Morse, Chantal Fahmy, Kevin A. Wright

Criminology and Criminal Justice Faculty Publications and Presentations

Prior research documents race and ethnicity as central to how individuals navigate the social and physical space of prisons. Racial segregation persists as a feature of prison life, and in navigating this racialized structure, racial groups construct and enforce a set of racialized norms to govern behavior (i.e., the “racial code”) that reinforce and reify prison racial politics. These processes, however, have remained largely descriptive in nature. Using data from a sample of incarcerated men in Arizona prisons (N = 251), this article extends prior work by operationalizing the concept of the racial code, assessing its dimensionality, distinguishing it from …

"The Call Is Coming From Inside The House": Tracing Experiences In The Institutionally-Centered Process Of Establishing Limited Conservatorships In California, Barbara Alison Imle

Dissertations and Theses

In this institutional ethnography, multiple methods are used to explore California’s process of establishing limited conservatorships, which are legal proceedings that limit or terminate civil rights of people with Intellectual and Developmental Disabilities (IDD). This research uses observations of 93 conservatorship hearings, 16 interviews with people involved in the conservatorship process, and an analysis of over 40 documents related to these legal proceedings. These data are used to answer two questions: 1) what is the process of establishing a limited conservatorship in California; and 2) how is this process experienced by those involved?

Findings break down a complex process and …

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

Chicano/Latino Studies Faculty Publications and Presentations

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

Understanding The Experiences Of Latino Medical Students In A Learning Medical Environment, Leslie García

Dissertations and Theses

Very little is known about the experiences and perceptions of underrepresented minority (URiM) medical students in the U.S. allopathic medical schools. The limited literature posits URiMs experience more adverse experiences in the learning environment and have different learning outcomes in comparison to their White peer counterparts. Latino medical students represent 7.1% of all entering medical students across all U.S. medical schools. While they represent the largest ethnic minority in the United States within parity lack representation among the physician workforce [sic]. There is a dearth of knowledge of what factors contribute to the success of Latino medical students progressing in …