Digital Commons Network^™

Using Gis-Based Spatial Analysis To Determine Urban Greenspace Accessibility For Different Racial Groups In The Backdrop Of Covid-19: A Case Study Of Four Us Cities, Arun K. Pallathadka, Laxemi Pallathadka, Sneha Rao, Heejun Chang, Dorn Van Dommelen

Geography Faculty Publications and Presentations

As the United States leads COVID-19 cases on global charts, its spatial distribution pattern offers a unique opportunity for studying the social and ecological factors that contribute to the pandemic’s scale and size. We use a GIS-data-based approach to evaluate four American cities—Anchorage (Alaska), Atlanta (Georgia), Phoenix (Arizona), and Portland (Oregon) characterized by the significant composition of different racial and ethnic group populations. Building upon previous studies that investigated urban spatial inequalities using the environmental justice framework, we examine: (1) the relative racial vulnerability of Census Block Groups (CBG) and ZIP Code Tabulation Areas (ZCTA) to COVID-19 (2) green space …

Mapping Meaningful Places On Washington’S Olympic Peninsula: Toward A Deeper Understanding Of Landscape Values, Lee Cerveny, Kelly Biedenweg, Rebecca J. Mclain

Institute for Sustainable Solutions Publications and Presentations

Landscape values mapping has been widely employed as a form of public participation GIS (PPGIS) in natural resource planning and decision-making to capture the complex array of values, uses, and interactions between people and landscapes. A landscape values typology has been commonly employed in the mapping of social and environmental values in a variety of management settings and scales. We explore how people attribute meanings and assign values to special places on the Olympic Peninsula (Washington, USA) using both a landscape values typology and qualitative responses about residents’ placerelationships. Using geographically referenced social values data collected in community meetings (n …

Advanced Gis: Smart Transportation, Christopher Bone, Ken Kato, Jacob Bartruff, Marc Schlossberg

TREC Final Reports

As sensors have become cheaper and more common, they have found an increasingly important role in transportation. However, curriculum to prepare students who will be working with these technologies as developers and planners has not developed at the same rate. The goal of this project was to develop a college course focused around sensors and smart transportation to be offered to undergrad and graduate students at the University of Oregon. The class focused on the practical application and the theoretical consequences of these developments. The class was offered in the spring term of 2015 to a group of undergraduate and …

Revisiting Critical Gis, Jim Thatcher, Luke Bergmann, Britta Ricker, Reuben Rose-Redwood, Daniel O'Sullivan, Trevor J. Barnes, Luke R. Barnesmoore, Laura Beltz Imaoka, Ryan Burns, Jonathan Cinnamon, Craig M. Dalton, Clinton Davis, Stuart Dunn, Francis Harvey, Jin-Kyu Jung, Elen Kersten, Ladona Knigge, Nick Lally, Wen Lin, Dillon Mahmoudi, Michael Martin, Will Payne, Amir Sheikh, Taylor Shelton, Eric Sheppard, Chris W. Strother, Alexander Tarr, Matthew W. Wilson, Jason C. Young

Urban Studies and Planning Faculty Publications and Presentations

The article looks into the critical geographic information science (GIS) in approaching questions both emerging and enduring around the intersection of the spatial and the digital. It offers trading zones for discussion of issues, for building alliances and interrogating tensions, and for a constant dialectical process of critique and renewal. One tension running through critical GIS is the contradictory role it has played in addressing questions of social justice.

Tree Inventory Report: Soma Ecodistrict, Charles Batey, Aaron Dole, Dylan Englin, Krista Fanucchi, Matthew Hart, Owen Larson, Evan Skora, Rachel Tippery, Derek Welle, Timothy Roszel, Emily Smith, Matthew Zinik

Asset Mapping: Community Geography Project

The Community Geography Project of IMS augments its work for communities in the Portland region through an ongoing series of GIS and Asset Mapping PSU Senior Capstone courses. Multi-disciplinary teams of students are introduced to issues that community partners bring to us that require a better understanding of community assets and the possible connections among them. Students do research, analyses (including GIS analysis), and develop presentations, reports, and GIS products that communicate their findings to the partners and community members at large.

Tree Inventory Report: Soma District, Cody Graham, Jeremy Bigelow, Gary Shaw, Andrew Bailey, Katelynn Bisso, David Dunnington, Joshua Emmons, Morgan Farber, Cody Graham, Ryan Guidry, Max Joyner, Roger Klingelhoffer, Jonathan Newman, Nicholas Scarpelli, Geoffrey Duh

Asset Mapping: Community Geography Project

The SOMA tree inventory project was taken on by a group of fourteen students as a senior capstone at Portland State University, in September of 2015. Many of us came to this class with GiS background, however, there are others representing the diverse collection of studies offered at PSU, such as film, communication, and general sciences. Capstone courses are PSU’s requirement for all seniors that allow each student to take part in helping those in the surrounding community, by providing a benefit to organizations in need of a large group of volunteers. Our capstone course was designed to impart the …

A Geographic View Of Expansion Choices By U.S. Firms In China, Rossitza Wooster, David Banis, Ayesha Khalid

Economics Faculty Publications and Presentations

How does geography matter for explaining the location patterns of U.S. companies in China? We combine insights from the literature on economic geography and spatial interdependence in foreign direct investment (FDI) activity, to provide a comparative analysis using both sectoral regression results and maps that illustrate patterns in the data. We use a unique sample of publicly traded U.S. firms who announced expansion of operations into China between 1980 and 2005. Regression results show that relative to the tertiary sector, firm characteristics matter more for primary sector firms, whereas province characteristics matter more for secondary sector firms. Additionally, our GIS …

Assessing Transit Fare Equity In Utah Using A Geographic Information System, Steven Farber, Keith Batholomew, Xiao Li, Antonio Paez, Khandker M. Nurul Habib

TREC Final Reports

The goal of this study is to develop and apply a new method for assessing social equity impacts of distance-based public transit fares. Shifting to a distance-based fare structure can disproportionately favor or penalize different subgroups of a population based on variations in settlement patterns, travel needs, and most importantly, transit use. According to federal law, such disparities must be evaluated by the transit agency, but the area-based techniques identified by the Federal Transit Authority for assessing discrimination fail to account for disparities in distances travelled by transit users. This means that transit agencies currently lack guidelines for assessing the …

Aging In Our Communities: Six Case Studies Of Neighborhood Walkability In Clackamas And Washington Counties, Oregon And Clark County, Washington, Reema Alhamidi, Edelina Naydenova, Katherine Dahlin, Jason Rush, Margarita Gonzales, Kevin Ryan, Laura Harmon, Marcel Schaeffer, Bianca Iliesi, Laura Silverman, Brady Jones, John Todoroff, Megan Mulsoff Brown, Adrian Wells

Asset Mapping: Community Geography Project

The focus of this project was to evaluate the age-friendliness of the communities surrounding assisted living facilities in Clark, Clackamas, and Washington counties. Two facilities were selected in each of the aforementioned counties and researchers from our team surveyed the pedestrian environmental features of the surrounding area within a quarter-mile radius of the each facility. The survey data from each site was then distributed among two groups for qualitative and quantitative analysis. Quantitative analysis consisted of a compiling process that took the measures of quantifiable features (e.g. number of sidewalk breaks, abandoned lots, etc.) gathered in the field and standardized …

Portland Region Parks: Measuring Equity In Access, Harold Shields, Sindre Fredsvik, Jonah Horn, Robert Kalei Miller, Cameron Hill, Anna Petry, Daniel Mogelinski, Stephen P. Kyle, Jenna Knobloch, Jonah Horn, Henrich Biorn, Andew Wyatt, James Bedell, Evan Kent, Adrien Young

Asset Mapping: Community Geography Project

The goal of this Capstone project is to examine equity as it applies to the Portland region. CLF defines equity as “the right of every person to have access to opportunities necessary for satisfying essential needs and advancing their well-being” (CLF, 2007). Equity as it relates to parks is a difficult concept to define. Our project specifically focused on cataloging the amenities of ninety-three newly developed parks and making observations about park access in an effort to build a better picture of what equity looks like in the Portland region.

Multnomah County Youth Tobacco Access Report, Sara Avishan, Cameron Bremer, Mike Conley, Chad Dettlaff, Ben Fitzsimons, Ben Harper, Jennifer Jensen, Shawn Lenker, Dan Manders, Mateo Meazell

Asset Mapping: Community Geography Project

Multnomah County requested that the Summer 2009 Asset Mapping Capstone Group gather data relating to the proximity of tobacco advertising to Portland Public Schools. The group’s underlying objective was to create an accurate data set that may be used by Multnomah County public health officials to assess the possible effects of tobacco advertising on school-aged children with an eye to influencing policy. The data set was created using a number of tools in conjunction with primary data retrieved from field observation; great care was taken to ensure accuracy and objectivity. The findings, which may be used to inform future research, …

Active Transportation, Neighborhood Planning And Participatory Gis (Geographic Information System), Marc Schlossberg, Nico Larco

TREC Final Reports

Research on walking, the built environment, and healthy communities is a fairly recent area of inquiry, accelerated over the last ten years by an increased interest in the relationship between urban form and public health. A series of macro-oriented logic models and micro-focused data collection tools have been developed over this time in order to understand this healthy communities issue, as well as operationalize the hypotheses around the connection between the built environment and physical activity. None of these efforts, however, attempt to connect their assessment frameworks and tools with a public involvement process. The last ten years has also …

Getting To Know Lents: A Thematic Atlas Of Healthy Eating And Active Living, Allison Adcox, Marina Carter, Allen Davis, Jonathan Gray

Asset Mapping: Community Geography Project

This project was made possible by Portland State University spring and summer capstone students 2008 in conjunction with Community Health Partnership: Oregon’s Public Health Institute. This atlas describes some of the work of the Lents neighborhood Healthy Eating Active Living initiative, which is directed by Noelle Dobson of the Community Health Partnership, Oregon’s Public Health Institute. Created through a lens of healthy eating and active living, this atlas is intended to describe the historical richness and importance of the Lents community and exhibit significant projects and programs in the area.

Hydrologic Impacts Of Climate Change In The Upper Clackamas River Basin, Oregon, Usa, David Graves, Heejun Chang

Geography Faculty Publications and Presentations

The Pacific Northwest of the USA is dependent on seasonal snowmelt for water resources that support its economy and aquatic ecosystems. Increased temperatures resulting from higher concentrations of atmospheric greenhouse gases may cause disruptions to these resources because of reductions in the annual snowpack and the earlier occurrence of seasonal snowmelt. We applied a Geographic Information System (GIS)-based distributed hydrologic model at a monthly scale to assess the effects of future climate change on runoff from the Upper Clackamas River Basin (UCB; located near Portland, Oregon, USA). Once validated using historic flow data, the model was run for 2 future …

Montavilla: Mapping Community Assets, Adrien Allred, Ann Shaw Lee, Chris Stahlberg, Eugene Nucci

Asset Mapping: Community Geography Project

In May of 2006, Southeast Uplift of Portland Oregon approached Portland State University Mapping Community Assets Senior Capstone class with a proposed project. They asked the class to explore the community connections and assets in southeast Portland, and, specifically in the Montavilla Neighborhood. They were interested in the community organizations that might exist in the area and the way these organizations interacted with each other and the community as a whole. The class goal was to come up with a tool that could be used in the other southeast neighborhoods based on the research and experience in Montavilla.

The 2006 Guide To Local Food Resources: Portland Region:, Liz Mahon, Pressy Sankaran, Ann Shaw, Russell Theodore Holzinger

Asset Mapping: Community Geography Project

This guide serves to list the organizations involved in the promotion and maintenance of a sustainable local food system. It will summarize the nature of the involved organizations in an effort to identify existing partnerships and provide information that may lead to new opportunities in the community. In particular, this guide provides a listing of organizations that focus on farmer and consumer education, public policy, advocacy, marketing, and building relationships within this extensive food network. Also included is a matrix identifying which organizations are involved in the various sectors of the region ’ s food network, as well as maps …

Reflections On Ppgis: A View From The Trenches, Meg Merrick

Institute of Portland Metropolitan Studies Publications

The Community Geography Project is a Ford Foundation-funded program that provides training in Geographic Information System (GIS) technology and asset mapping methods to community-based nonprofit organizations in partnership with K-12 schools. The primary goal of the Project is to empower citizens, and it is hoped that the partnership between community- based groups and schools will be able to sustain technical and analytical expertise at the grassroots level. Although an overview of the lessons we have learned regarding access to hardware, software, and data are provided, this article focuses on questions regarding GIS training as related to citizen empowerment and provides …

A Clearinghouse Approach To Sharing Transportation Gis Data, Kenneth Dueker, J. Allison Butler, Paul Bender, Jihong Zhang

Center for Urban Studies Publications and Reports

Updating and maintaining Geographic Information Systems-Transportation data (GIS-T data) is proving difficult. Different database formats needed to support diverse applications leads to inconsistencies and inaccuracies, and duplication in updating. A clearinghouse approach is recommended for the collection and dissemination of new transportation features that can be segmented in different ways to meet the needs of various applications and inserted to update existing GIS-T databases. The clearinghouse approach is advantageous in that it is based on collecting data about new or changed transportation features once and uses the data many times to update existing databases.

A Primer On Gis-T Databases, J. Allison Butler, Kenneth Dueker

Center for Urban Studies Publications and Reports

This paper describes the primary database design approaches that have been and are being used in geographic information system applications for transportation (GIS-T). While not intending to be exhaustive, the paper covers the primary approaches used in federal, state, and local transportation agencies.

Gis-T Data Sharing Issues, Kenneth Dueker, J. Allison Butler

Center for Urban Studies Publications and Reports

The purpose of this paper is to develop a framework and principles for sharing of transportation data. The framework is intended to clarify roles of the various participants and the principles are intended to provide guidance for the participants. Both the framework and the principles are based on a GIS-T data model that defines relations among transportation data elements. (See Dueker and Butler (1998) for a detailed description of the data model. A simplified version is provided in the next section.) The data model guards against ambiguities and provides a basis for the development of the framework and principles for …

A Proposed Method Of Transportation Feature Identification, J. Allison Butler, Kenneth Dueker

Center for Urban Studies Publications and Reports

Geographic information systems (GIS) are being increasingly deployed by transportation agencies to help them display, review, and utilize data. The primary items of interest are transportation facilities and services, which may take the form of highways, airports, bus routes, and seaports, among others. Using GIS software, transportation facilities are represented as geometric shapes; i.e., points, lines, and areas. However, it is increasingly apparent to GIS users in the field of transportation that a geometry-based approach is not sufficient.

The offered solution is to develop a feature-based GIS approach for transportation. The central requirement of such an approach is to have …

Measuring The Impact Of Light Rail Systems On Single Family Home Values: A Hedonic Approach With Gis Application, Hong Chen, Anthony M. Rufolo, Kenneth Dueker

Center for Urban Studies Publications and Reports

In theory, proximity to a light rail (LRT) may have two different effects on residential property values. On the one hand, accessibility (proximity to the LRT stations) may increase property values. On the other hand, nuisance effects (proximity to the LRT line and stations) may decrease property values. Existing empirical studies are inconclusive, and failure to separate the effects of accessibility from the nuisance effects may explain some of the ambiguity. This paper examines the impact of the light-rail system (MAX) in Portland, Oregon, on single-family home values using distance to rail stations as a proxy for accessibility and distance …