Digital Commons Network^™

Autonomous Farming With Uavs, Pallavi Agrawal, Karthik Manjunath, Cherokee Rawls, Sujitha Raj Rajagopal, Riad Alharithi, Kamal Thapa

Engineering and Technology Management Student Projects

As the global need for food grows, agriculture is adapting autonomous farming techniques to scale in response. One of the most useful tools are UAVs (Unmanned Autonomous Vehicles), which are providing invaluable information and assistance to farmers. In some countries, UAVs are being rapidly embraced, while in others this progress is much slower. For a number of reasons, the United States has not broadly adopted this technology in assisting agricultural practices. In this article, we focus on the challenges companies and farmers are facing in making use of UAVs and what might be done to push this technology into widespread …

A Global Assessment Of Policy Tools To Support Climate Adaptation, Nicola Ulibarri, Idowu Ajibade, Eranga K. Galappaththi, Elphin T. Joe, Alexandra Lesnikowski, Katharine J. Mach, Issah J. Musah-Surugu, G. Nagle Alverio, Alcade C. Segnon, Multiple Additional Authors

Geography Faculty Publications and Presentations

Governments, businesses, and civil society organizations have diverse policy tools to incentivize adaptation. Policy tools can shape the type and extent of adaptation, and therefore, function either as barriers or enablers for reducing risk and vulnerability. Using data from a systematic review of academic literature on global adaptation responses to climate change (n = 1549 peer-reviewed articles), we categorize the types of policy tools used to shape climate adaptation. We apply qualitative and quantitative analyses to assess the contexts where particular tools are used, along with equity implications for groups targeted by the tools, and the tools’ relationships with transformational …

Portland State Magazine, Portland State University. Office Of University Communications

Portland State Magazine

PSU’s alumni magazine, published 2-3 times a year. In this issue: How the PSU community is leading Portland’s comeback from COVID-19; portraits of Portland State veterans from across the decades; three experts in conflict resolution, political science and history look at the roots of political polarization in the U.S.; PSU researchers spearhead efforts to protect the Pacific Northwest from cyber threats; comics break stereotypes around student homelessness; former Viking Ime Udoka becomes head coach of the Boston Celtics; writer Mitchell S. Jackson talks about his Pulitzer win; and more.

Wayfinding Tools For People With Visual Impairments In Real-World Settings: A Literature Review Of Recent Studies, Amy T. Parker, Martin Swobodzinski, Julie D. Wright, Kyrsten Hansen, Becky Morton, Elizabeth Schaller

Special Education Faculty Publications and Presentations

A review of 35 peer reviewed articles dated from 2016 to February, 2021 was conducted to identify and describe the types of wayfinding devices that people who are blind, visually impaired or deafblind use while navigating indoors and/or outdoors in dynamic travel contexts. Within this investigation, we discovered some characteristics of participants with visual impairments, routes traveled, and real-world environments that have been included in recent wayfinding research as well as information regarding the institutions, agencies, and funding sources that enable these investigations. Results showed that 33 out of the 35 studies which met inclusionary criteria integrated the use of …

Citoyen.Ne.S: Conversation En Français, Annabelle Dolidon

PDXOpen: Open Educational Resources

CITOYEN.NE.S is a French language method for the conversation class at the intermediate/ advanced level. Content and activities are built around the concepts of diversity, inclusivity and equity, and engage students to practice French while questioning and participating in the world they live in – to be full citizens whatever their background, their race or their gender identity. As the French spelling of the title indicates, the book embraces écriture inclusive and uses it for instructions and general information for all students.

The book is composed of five chapters covering various themes. None of them provides again basic vocabulary from …

Teasing Apart Impacts Of Human Activity And Regional Drought On Madagascar’S Large Vertebrate Fauna: Insights From New Excavations At Tsimanampesotse And Antsirafaly, Laurie R. Godfrey, Brooke Crowley, Kathleen M. Muldoon, Stephen J. Burns, Nick Scroxton, Zachary S. Klukkert, Lovasoa Ranivoharimanana, Jamie Alumbaugh, Matthew Borths, Natalie Vasey

Anthropology Faculty Publications and Presentations

Madagascar experienced a major faunal turnover near the end of the first millenium CE that particularly affected terrestrial, large-bodied vertebrate species. Teasing apart the relative impacts of people and climate on this event requires a focus on regional records with good chronological control. These records may document coeval changes in rainfall, faunal composition, and human activities. Here we present new paleontological and paleoclimatological data from southwestern Madagascar, the driest part of the island today. We collected over 1500 subfossil bones from deposits at a coastal site called Antsirafaly and from both flooded and dry cave deposits at Tsimanampesotse National Park. …

My Mountain, Your Mountain, Our Mountain: Incorporating Emotional And Sensory Experiences In Mapping Sense Of Place In Mount Hood National Forest, Alicia Ranae Milligan

Dissertations and Theses

Understanding the complex connections humans have with landscapes is necessary for successful land management and planning practices. Only within the last few decades has mapping the values of forest users been used to produce data that can be incorporated into forest planning as a means to better understand social and environmental dynamics. This research used sense of place web mapping coupled with interviews to understand forest users' emotional and sensory experiences within the Mount Hood National Forest and to improve future sense of place mapping research. Two objectives were addressed in this research: 1) develop a typology of individuals' emotions …

Being Against The Black: Bad Faith And Anti-Black Racism (Guest Editors' Introduction), Amir A. Gilmore, Latoya Brackett, Davida Sharpe-Haygood

Northwest Journal of Teacher Education

As a special journal issue, the guest editors continued their study on (anti)blackness within K-12 schooling and teacher preparation programs. Through the introduction’s white space, the guest editors attempt to theorize and center (anti)Blackness. Moreover, they existentially critique the “ordinary” assumptions about who can be a human and explain why Black existence continues on despite their collective suffering. The introductory article is organized as follows: (1) a thorough explanation of bad faith and antiblackness, (2) an illustration of antiblackness’ manifestations in K-12 schooling, and (3) the importance of using jazz as an analytic frame to curate the contributors’ scholarship.

Black Liberation In Teacher Education: (Re)Envisioning Educator Preparation To Defend Black Life And Possibility, Justin A. Coles, Darrius Stanley

Northwest Journal of Teacher Education

Current configurations of teacher education programs are insufficient in attracting and producing teachers equipped to teach through the permanence of antiblackness, instead still relying on race-neutral or color-evasive pedagogies that perpetuate the misrecognition of antiblackness. As evident by the sustained inequities experienced by Black children and the routine marginalization of Black (teacher) educators in the field, we recognize that teacher education programs, and subsequently P-12 classrooms, are not designed nor equipped to reduce the harm caused by persistent anti-Black racism. Despite the ways Blackness is derided and invisibilized in educator preparation, Black students, families, and communities have long countered anti-Black …

If You Are Not Ready, Then Step Aside: Intentionally Centering The Black Male Body In Teacher Education, Cherrel Miller Dyce, Julius Davis

Northwest Journal of Teacher Education

The conditions of Black male students in K-12 schools have been well-documented by scholars and clearly illustrate institutionalized anti-Black maleness that continues to go unaddressed or, in some cases, never addressed in most educator preparation programs and school systems in the U.S. We call for the centering of Black male bodies in teacher education and offer Afrocentric Assessment Mattering Pathways (AAMP) for guidance for intentionally centering the Black male body in teacher education: 1) critical anti-black self-reflection, 2) Afrocentric curricular change using Black history, and 3) engaging in off-campus Afrocentric environments.

Seamless Wayfinding By A Deafblind Adult On An Urban College Campus: A Case Study On Wayfinding Performance, Information Preferences, And Technology Requirements, Martin Swobodzinski, Amy T. Parker, Julie D. Wright, Kyrsten Hansen, Becky Morton

Geography Faculty Publications and Presentations

This article reports on an empirical evaluation of the experience, performance, and perception of a deafblind adult participant in an experimental case study on pedestrian travel in an urban environment. The case study assessed the degree of seamlessness of the wayfinding experience pertaining to routes that traverse both indoor and outdoor spaces under different modalities of technology-aided pedestrian travel. Specifically, an adult deafblind pedestrian traveler completed three indoor/outdoor routes on an urban college campus using three supplemental wayfinding support tools: a mobile application, written directions, and a tactile map. A convergent parallel mixed-methods approach was used to synthesize insights from …

Forest Fire Effects On The Temporal Variability Of Landscape Snow Albedo Relative To Burn Severity, Max Gersh

Dissertations and Theses

Snow-water storage is decreasing, while forest fires are increasing in duration, size, frequency, and intensity, due to climate change. Most forest fires occur in the seasonal snow zone, altering snow mass and energy balance for many years following fire. Following forest fires, Surface snow albedo (SSA) decreases, as light absorbing particles (LAP), particularly black carbon (BC) produced in forest fires get deposited throughout the snowpack, altering snowpack energy balance driving earlier snowmelt in burned forests. While SSA decreases, landscape snow albedo (LSA) increases following fire, as more of the snow-covered surface becomes visible beneath the burned forest canopy, brightening the …

Hybrids 2.0: Forward To A New Normal In Post-Pandemic Language Teaching, William J. Comer

World Languages and Literatures Faculty Publications and Presentations

This article reflects on possible ways of incorporating the practices and tools of pandemic-induced remote teaching into the post-pandemic face-to-face teaching of Russian. We posit that a large number of the tools and practices that face-to-face teachers adopted during the pandemic will continue to be useful and effective for accomplishing fundamental pedagogical imperatives such as curating learners’ access to input and providing opportunities for learners to interact with that input. Nevertheless, we also assert the benefits of synchronous face-to-face language instruction for building community and interaction. We explore ways of intentionally blending practices into new hybrid models of language instruction, …

History Of The Tulsa Race Massacre, 1921 (Bibliography), Patricia A. Schechter

The Tulsa Race Massacre: Teaching and Learning Resources

This bibliography gathers the most significant and important scholarship on the Tulsa Race Massacre. It includes books and articles by historians, journalists, lawyers, and political commentators, like President Joseph Biden.

Global Evidence Of Constraints And Limits To Human Adaptation, Adelle Thomas, Emily Theokritoff, Alexandra Lesnikowski, Diana Reckien, Kripa Jagannathan, Roger Cremades, Donovan Campbell, Elphin Tom Joe, Asha Sitati, Idowu Ajibade, Multiple Additional Authors

Geography Faculty Publications and Presentations

Constraints and limits to adaptation are critical to understanding the extent to which human and natural systems can successfully adapt to climate change. We conduct a systematic review of 1,682 academic studies on human adaptation responses to identify patterns in constraints and limits to adaptation for different regions, sectors, hazards, adaptation response types, and actors. Using definitions of constraints and limits provided by the Intergovernmental Panel on Climate Change (IPCC), we find that most literature identifies constraints to adaptation but that there is limited literature focused on limits to adaptation. Central and South America and Small Islands generally report greater …

Climate Change Adaptation In Conflict‑Affected Countries: A Systematic Assessment Of Evidence, Asha Sitati, E. Joe, C. Grayson, C. Jaime, E. Gilmore, Eranga K. Galappaththi, A. Hudson, G. Nagle Alverio, Idowu Ajibade, Multiple Additional Authors

Geography Faculty Publications and Presentations

People affected by conflict are particularly vulnerable to climate shocks and climate change, yet little is known about climate change adaptation in fragile contexts. While climate events are one of the many contributing drivers of conflict, feedback from conflict increases vulnerability, thereby creating conditions for a vicious cycle of conflict. In this study, we carry out a systematic review of peer-reviewed literature, taking from the Global Adaptation Mapping Initiative (GAMI) dataset to documenting climate change adaptation occurring in 15 conflict-affected countries and compare the findings with records of climate adaptation finance flows and climate-related disasters in each country. Academic literature …

Representation Justice As A Research Agenda For Socio-Hydrology And Water Governance, Melissa Haeffner, Dana E. Hellman, Alida Cantor, Idowu Ajibade, Vinka Oyanedel-Craver, Maura Kelly, Laura Schifman, Lisa Weasel

Environmental Science and Management Faculty Publications and Presentations

We propose representation justice as a theoretical lens for socio-hydrology and water governance studies. An exploratory survey of 496 water sector employees in the United States revealed that self-identifying females felt more strongly discriminated against due to their gender and other social factors, compared to self-identifying males. Responses unveiled how macro- and microaggressions impede career pathways to leadership positions and, therefore, representation. We identify ways in which socio-hydrology can benefit from a representation justice lens by considering the following: (1) how power and politics shape the composition of the water sector and decision-making processes; (2) how available quantitative data do …

Exploring How Antecedent Precipitation Amount And The Effects Of Covid-19 Affect Stormwater Runoff Quality Along Urban Gradients, Daniel Ramirez, Katherine Gelsey

REU Final Reports

Stormwater runoff quality is affected by a multitude of factors including surrounding land characteristics, human activities, and antecedent precipitation amounts. We explore how seasonal and variable precipitation affect E. Coli, total suspended solids, nitrogen-nitrate, orthophosphate, lead, and zinc concentrations in Portland, OR, USA. Correlation analysis was conducted between the pollutant concentrations and antecedent rainfall each sample site received for the previous 1, 3, 5, 7, and 30 days from when the sample was taken. We ran Mann-Whitney tests to determine if the levels of the pollutants were statistically different between the wet season and the dry season. We found that …

Spatial Analysis Of Landscape Characteristics, Anthropogenic Factors, And Seasonality Effects On Water Quality In Portland, Oregon, Katherine Gelsey, Daniel Ramirez

REU Final Reports

Urban areas often struggle with deteriorated water quality as a result of complex interactions between landscape factors such as land cover, use, and management as well as climatic variables such as weather, precipitation, and atmospheric conditions. Green stormwater infrastructure (GSI) has been introduced as a strategy to reintroduce pre-development hydrological conditions in cities, but questions remain as to how GSI interacts with other landscape factors to affect water quality. We conducted a statistical analysis of six relevant water quality indicators in 131 water quality stations in four watersheds around Portland, Oregon using data from 2015 to 2021. Indiscriminate of station …

Adoption And Use Of E-Grocery Shopping In The Context Of The Covid-19 Pandemic: Implications For Transport Systems And Beyond, Gabriella Abou-Zeid

Dissertations and Theses

In 2020, the COVID-19 pandemic drastically impacted travel for in-person shopping, commute trips, global supply chains, and food business operations. Previously mundane tasks, like shopping for food and household items, became markedly different as new social distancing and mask guidelines were put in place to mitigate the spread of COVID-19. Concurrently, e-commerce sales in the U.S. skyrocketed. E-grocery pickup and delivery services saw unprecedented expansions. The adoption and use of e-grocery services have implications for equity and mobility, although the nature of the relationship of e-grocery to the latter is still unclear. Enhancing our understanding of the drivers of (and …

Active Rock Glaciers Of The Contiguous United States: Geographic Information System Inventory And Spatial Distribution Patterns, Gunnar Johnson, Heejun Chang, Andrew G. Fountain

Geography Faculty Publications and Presentations

In this study we present the Portland State University Active Rock Glacier Inventory (n=10 332) for the contiguous United States, derived from the manual classification of remote sensing imagery (Johnson, 2020; https://doi.org/10.1594/PANGAEA.918585). Individually, these active rock glaciers are found across widely disparate montane environments, but their overall distribution unambiguously favors relatively high, arid mountain ranges with sparse vegetation. While at least one active rock glacier is identified in each of the 11 westernmost states, nearly 88 % are found in just five states: Colorado (n=3889), Montana (n=1813), Idaho (n=1689), Wyoming ( …

A Paleoseismic Study Of The Twin Lakes Fault, Mount Hood Fault Zone, Oregon, Charlie Carr, Ashley R. Streig

McNair Symposium

Recent geologic mapping on high-resolution topography from lidar has led to the discovery of a zone of active faults on Mount Hood. The Mt. Hood Fault Zone consists of four separate faults, and stretches ~55 km from south to north, and crosses the summit of Mount Hood. The focus of this study is the northern section of Twin Lakes Fault, which lies directly south of Mount Hood and adjacent to OR35 and the White River. Lidar topography reveals the west side down normal displacement on the Twin Lakes fault. The highest tectonic seismicity rates in the Mount Hood area occur …

Ronald E. Mcnair Scholars Program Profiles And Abstracts 2021, Mcnair Scholars Program

McNair Symposium

This is the complete event program and provides presentation abstracts and biographies of McNair scholars and their mentors.

Opportunities And Challenges In The Collection And Use Of Socio-Spatial Data In National Forest Planning, Diane Trechsel Besser

Dissertations and Theses

Understanding human-environment connections to places is an important component of land-use management. Tools for collecting geographically referenced public values-based data (defined as socio-spatial data) for use in natural resource planning have been reported in academic journals for decades. The utility of socio-spatial data is in making public values tangible and potentially actionable in land-use analyses and decision processes. However, there is a lack of comprehensive documentation on the ways in which socio-spatial data is perceived, collected, interpreted and applied at a practical level. A better understanding of these factors allows planners to mitigate barriers and leverage opportunities to more …

Spatial Configuration And Time Of Day Impact The Magnitude Of Urban Tree Canopy Cooling, Miguel Alonzo, Matthew Baker, Yuemeng Gao, Vivek Shandas

Urban Studies and Planning Faculty Publications and Presentations

Tree cover is generally associated with cooler air temperatures in urban environments but the roles of canopy configuration, spatial context, and time of day are not well understood. The ability to examine spatiotemporal relationships between trees and urban climate has been hindered by lack of appropriate air temperature data and, perhaps, by overreliance on a single ‘tree canopy’ class, obscuring the mechanisms by which canopy cools. Here, we use >70 000 air temperature measurements collected by car throughout Washington, DC, USA in predawn (pd), afternoon (aft), and evening (eve) campaigns on a hot summer day. We subdivided tree canopy into …

Lidar Predictive Modeling Of Pacific Northwest Mound Sites: A Study Of Willamette Valley Kalapuya Mounds, Oregon (Usa), Tia Rachelle Cody, Shelby Anderson

Anthropology Faculty Publications and Presentations

Archaeologists need new methods to survey large areas and overcome environmental and archaeological barriers to site discovery in heavily forested regions. LiDAR (light detection and ranging) technology is one possible solution to these challenges as LiDAR digitally clears away vegetation, facilitating large-scale remote sensing survey. The Calapooia Watershed, located in the southern Willamette Valley of Oregon, is an ideal area to utilize LiDAR. While valley lowlands are cleared for agriculture, riverine areas remain heavily wooded and are known to contain hundreds of low-lying earthwork features created by pre-colonial Kalapuyan people. To assess the potential application of LiDAR in this region, …

Participatory Gis Mapping Highlights Indirect Use And Existence Values Of Coastal Resources And Marine Conservation Areas, Kaegan M. Scully‐Engelmeyer, Elise F. Granek, Max Nielsen-Pincus, Greg Brown

Environmental Science and Management Faculty Publications and Presentations

Consideration of social and cultural dimensions in coastal and marine planning has increased and ecosystem services provide important framing to investigate values and priorities associated with these systems. Research efforts in coastal communities offer insights on social dimensions of ocean and coastal management decisions, but questions remain about how demographics and geographic residence affect perceptions of marine resources and management. We conducted and analyzed a public participation geographic information system (PPGIS) mapping survey of Oregon residents to capture uses and perceived values of coastal and marine areas. We measured coastal values, explored regional differences in those values, and identified a …

Relative Impacts Of Climate Change And Land Cover Change On Streamflow Using Swat In The Clackamas River Watershed, Usa, Junjie Chen, Heejun Chang

Geography Faculty Publications and Presentations

To understand the spatial–temporal pattern of climate and land cover (CLC) change effects on hydrology, we used three land cover change (LCC) coupled scenarios to estimate the changes in streamflow metrics in the Clackamas River Watershed in Oregon for the 2050s (2040–2069) and the 2080s (2070–2099). Coupled scenarios, which were split into individual and combined simulations such as climate change (CC), LCC, CLC change, and daily streamflow were simulated in the Soil and Water Assessment Tool. The interannual variability of streamflow was higher in the lower urbanized area than the upper forested region. The watershed runoff was projected to be …

Raps Sheet, Summer 2021, Retirement Association Of Portland State

RAPS Sheet: Monthly Newsletter

No abstract provided.

Exploring Linkages Between Landscape Patterns And Freshwater And Estuarine Bivalves In The Coast Range Of Oregon, Kaegan Michael Scully-Engelmeyer

Dissertations and Theses

Spatial configurations of landscape variables (biotic, abiotic, and socio-ecological) affect and are affected by ecological processes and species in watersheds. This dissertation explores relationships among landscape patterns, ecosystem processes and bivalve species dynamics in coastal watersheds in Oregon, USA. I approached this broad topic through two primary avenues of research: investigating cross-ecosystem threats from pesticide use in forestland management to downstream aquatic environments, and the landscape ecology of an at-risk freshwater mussel species.

Terrestrial land use activities present cross-ecosystem threats to riverine and marine species and processes. Specifically, pesticide runoff can disrupt hormonal, reproductive, and developmental processes in aquatic organisms, …