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Physical Sciences and Mathematics

2010

Portland State University

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Articles 1 - 14 of 14

Full-Text Articles in Social and Behavioral Sciences

Interview With Dan Mcfarling, Aorta, 2010 (Audio), Dan Mcfarling Dec 2010

Interview With Dan Mcfarling, Aorta, 2010 (Audio), Dan Mcfarling

All Sustainability History Project Oral Histories

Interview of Dan McFarling by Andrew Scanlan at Union Station, Portland, Oregon on December 1st, 2010.

The interview index is available for download.


Modeling Acoustic Scattering From The Seabed Using Transport Theory, Jorge Quijano, Lisa M. Zurk Sep 2010

Modeling Acoustic Scattering From The Seabed Using Transport Theory, Jorge Quijano, Lisa M. Zurk

Electrical and Computer Engineering Faculty Publications and Presentations

Radiative Transfer (RT) theory has established itself as an important tool for electromagnetic remote sensing in parallel plane geometries with random distributions of scatterers, and most recently it has also been proposed as a model for the propagation of elastic waves in layered ocean sediments. In this work the capabilities of this model are illustrated, as the RT method is used to predict backscattering strength from laboratory models of random media. The RT model is characterized by its flexibility on accommodating scatterers in a broad variety of sizes, shapes, and acoustic contrast relative to the background media. Additionally, this formulation …


Climate Change And Globalization In The Americas: Case Studies Of Mitigation And Adaptation, Mary Finley-Brook, Melissa Haeffner, Charmaine Heslop-Thomas, Elma Montaña, Leah Sprain Aug 2010

Climate Change And Globalization In The Americas: Case Studies Of Mitigation And Adaptation, Mary Finley-Brook, Melissa Haeffner, Charmaine Heslop-Thomas, Elma Montaña, Leah Sprain

Environmental Science and Management Faculty Publications and Presentations

Robin Leichenko and Karen O‘Brien have proposed ―double exposure‖ as a conceptual framework to demonstrate how processes of globalization and global environmental change (GEC) redefine risk and encourage new, interrelated responses to social and ecological transitions (O‘Brien and Leichenko, 2000; Leichenko and O'Brien, 2008). In particular, the concept encourages researchers and policy makers to consider interplay between global climate change and globalization and how this is expressed unevenly across space. After reviewing the ways double exposure has been used in the literature, we consider four case studies to investigate the utility of the framework for analyzing and understanding climate change …


Food Delivery Footprint: Addressing Transportation, Packaging, And Waste In The Food Supply Chain, Madeleine E. Pullman, Robin Fenske, Wayne Wakeland Jun 2010

Food Delivery Footprint: Addressing Transportation, Packaging, And Waste In The Food Supply Chain, Madeleine E. Pullman, Robin Fenske, Wayne Wakeland

Business Faculty Publications and Presentations

Transportation of food accounts for a significant fraction of the carbon dioxide emissions believed to be adversely impacting climate and the environment. And this impact is increasing as food supply chains become longer and more complex, and food packaging requirements lead to increased waste. Many organizations such as hospitals and upper level education are becoming increasingly concerned about sustainability. In this study, college, university, and hospital food purchasing behavior were assessed using interviews, surveys, and modeling to evaluate the environmental implications of decisions regarding food transportation and packaging. Current purchasing practices, corresponding transportation modes, packaging, recycling, and waste removal were …


Interview With Stephanie Noll, Bicycle Transportation Alliance, 2010 (Audio), Stephanie Noll May 2010

Interview With Stephanie Noll, Bicycle Transportation Alliance, 2010 (Audio), Stephanie Noll

All Sustainability History Project Oral Histories

Interview of Stephanie Noll by Sean Cochran in NW Portland, Oregon on May 24th, 2010.

The interview index is available for download.


Examining The Effects Of Climate Change And Urban Development On Water Demand: A Multi-Scale Analysis Of Future Water Demand In Hillsboro, Oregon, Lily Arielle House-Peters May 2010

Examining The Effects Of Climate Change And Urban Development On Water Demand: A Multi-Scale Analysis Of Future Water Demand In Hillsboro, Oregon, Lily Arielle House-Peters

Dissertations and Theses

In the Portland, Oregon, metropolitan area, suburban cities such as Hillsboro are projected to grow as people seek affordable housing near a rapidly growing metropolis. This thesis examines the combined impact of climate change and urban development on both neighborhood and municipal scale residential water demand in Hillsboro, Oregon. I use two models, a surface energy balance model, Local-scale Urban Meteorological Parameterization Scheme (LUMPS), and a system dynamics model, CCDomestic, to investigate changes in residential water demand in the 2040s at two distinct spatial scales, the neighborhood and the municipality. I calibrate and validate each model to the reference period …


The Hydro-Ecology Of Everyday Life: Assessing The Social And Environmental Determinants Of Water Use In The Portland Region, Vivek Shandas May 2010

The Hydro-Ecology Of Everyday Life: Assessing The Social And Environmental Determinants Of Water Use In The Portland Region, Vivek Shandas

Systems Science Friday Noon Seminar Series

Driven in part by the imminent threats of population growth and climate destabilization, recent studies suggest that urban areas face severe water scarcity, with some areas in Australia and the United States already instituting moratoria on water use. While water managers traditionally avoid such crises by developing demand forecasts based on population estimates, technological developments, and weather predictions, their analysis are often at a regional scale with aggregate measures of water consumption. To date, there exists limited empirical evidence about how urban spatial structure and concomitant socio-demographic and temperature characteristics mutually interact to affect water demand at the scale of …


Science And Practice Of Integrated River Basin Management : Lessons From North And Central American Unesco-Help Basins, Heejun Chang, Anne Browning-Aiken May 2010

Science And Practice Of Integrated River Basin Management : Lessons From North And Central American Unesco-Help Basins, Heejun Chang, Anne Browning-Aiken

Geography Faculty Publications and Presentations

The Hydrology for the Environment, Life and Policy (HELP) program, a cross-cutting component of the UNESCO International Hydrological Programme (IHP), has as its goal to facilitate dialogue among hydrologists, social and economic scientists, water resource managers, water lawyers, policy experts, and river basin stakeholder communities in setting a research agenda driven by local management and policy issues. HELP seeks to improve the benefits to society by applying the principals of integrated water-resources management to complex, interdisciplinary issues within catchments.

This Monograph is the culmination of a workshop held in 2010 in which the managers from the six North American basins …


Reconstructability Analysis Of Elementary Cellular Automata, Martin Zwick, Hui Shi Mar 2010

Reconstructability Analysis Of Elementary Cellular Automata, Martin Zwick, Hui Shi

Systems Science Friday Noon Seminar Series

Reconstructability analysis is a method to determine whether a multivariate relation, defined set- or information-theoretically, is decomposable with or without loss (reduction in constraint) into lower ordinality relations. Set-theoretic reconstructability analysis (SRA) is used to characterize the mappings of elementary cellular automata. The degree of lossless decomposition possible for each mapping is more effective than the λ parameter (Walker & Ashby, Langton) as a predictor of chaotic dynamics.

Complete SRA yields not only the simplest lossless structure but also a vector of losses of all decomposed structures, indexed by parameter, τ. This vector subsumes λ, Wuensche’s Z parameter, and Walker …


Local And Traditional Knowledge And The Historical Ecology Of Pacific Herring In Alaska, Thomas F. Thornton, Madonna L. Moss, Virginia L. Butler, Jamie Hebert, Fritz Funk Jan 2010

Local And Traditional Knowledge And The Historical Ecology Of Pacific Herring In Alaska, Thomas F. Thornton, Madonna L. Moss, Virginia L. Butler, Jamie Hebert, Fritz Funk

Anthropology Faculty Publications and Presentations

The article focuses on the historical ecology of the Pacific herring, a marine food web resource, in the Gulf of Alaska. It states the hearing conducted by the Alaska Legislature's House special committee on fisheries on the status and management of herring in Southeast Alaska during which Tlingit fisherman Clarence Jackson of Kake notes the disappearance of herring in his lifetime. Information on herring ecology based from Native and non-Native individuals from Southeast communities and archaeological site reports reveal that non-Natives in Southeast Alaska have exploited herring with the development of a herring reduction plant. It underscores the need for …


Archaeological Evidence For Resilience Of Pacific Northwest Salmon Populations And The Socioecological System Over The Last ~7,500 Years, Sarah K. Campbell, Virginia L. Butler Jan 2010

Archaeological Evidence For Resilience Of Pacific Northwest Salmon Populations And The Socioecological System Over The Last ~7,500 Years, Sarah K. Campbell, Virginia L. Butler

Anthropology Faculty Publications and Presentations

Archaeological data on the long history of interaction between indigenous people and salmon have rarely been applied to conservation management. When joined with ethnohistoric records, archaeology provides an alternative conceptual view of the potential for sustainable harvests and can suggest possible social mechanisms for managing human behavior. Review of the ~7,500-year-long fish bone record from two subregions of the Pacific Northwest shows remarkable stability in salmon use. As major changes in the ecological and social system occurred over this lengthy period, persistence in the fishery is not due simply to a lack of perturbation, but rather indicates resilience in the …


Genetically Engineering Crops For A Sustainable Agriculture, David E. Ervin, Rick Welsh Jan 2010

Genetically Engineering Crops For A Sustainable Agriculture, David E. Ervin, Rick Welsh

Economics Faculty Publications and Presentations

The article examines the role of genetically engineered (GE) crops in fostering a more sustainable agriculture. An overview of the National Academy of Sciences metal study of the impacts of GE crops on farm sustainability in the U.S. is given. The two types of GE crops are discussed, one which produces its own insecticide called insect resistant (IR) crops and the other is engineered to resist particular herbicides. An explanation for sustainable agriculture is also presented.


What Drives Academic Bioscientists: Money Or Values?, David E. Ervin, Sharmistha Nag, Hui Yang, Steven T. Buccola Jan 2010

What Drives Academic Bioscientists: Money Or Values?, David E. Ervin, Sharmistha Nag, Hui Yang, Steven T. Buccola

Economics Faculty Publications and Presentations

The article determines the factors that drive academic bioscience to better understand the role of genetically engineered (GE) crops in the sustainability of U.S. agriculture. Some challenges brought about by GE crops in the U.S. farm sustainability include tracking and controlling water pollution, protecting against herbicide resistance and nitrogen fixation. Professional norms are also considered as a great factor driving the academic bioscience.


Integrating Education, Evaluation & Partnerships Into Large-Scale Sustainable Stormwater Management Programs, Vivek Shandas, Anne Nelson, Carine Arendes Jan 2010

Integrating Education, Evaluation & Partnerships Into Large-Scale Sustainable Stormwater Management Programs, Vivek Shandas, Anne Nelson, Carine Arendes

Urban Studies and Planning Faculty Publications and Presentations

Integrated stormwater management using green infrastructure shows promise in saving money and mitigating environmental impacts caused by urban development. Equally important are the potential community benefits, including better understanding of ecological systems, increased access to urban green spaces, safer and healthier neighborhoods, and informed residents that are equipped to take action to improve watershed health. As a partnership between the City of Portland Environmental Services, Portland State University, and residents of the Tabor to the River (T2R) neighborhood, we conducted a survey to understand the role of civic ecology in green infrastructure projects. The survey results indicate a high interest …