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Full-Text Articles in Physical Sciences and Mathematics
Invasive Species Management Plan For Oswego Lake, Daniel Warren, Mark Sytsma
Invasive Species Management Plan For Oswego Lake, Daniel Warren, Mark Sytsma
Environmental Science and Management Professional Master's Project Reports
This Invasive Species Management Plan defines an overarching strategy for the Lake Oswego Corporation (LOC) to mitigate threats from invasive species to Oswego Lake. Invasive species pose a direct risk to recreational and aesthetic uses of the lake, critical LOC infrastructure, and ecological communities within the lake. The Plan is particularly concerned with two bivalve mollusks in the genus Dreissena: the zebra mussel (Dreissena polymorpha) and the quagga mussel (Dreissena bugensis). These mussels grow in dense colonies that damage watercraft and underwater structures as well as displace native species. A recent scientific report found that …
Improving Travel Information Products Via Robust Estimation Techniques, David Maier, Kristin A. Tufte, Rafael J. Fernández Moctezuma
Improving Travel Information Products Via Robust Estimation Techniques, David Maier, Kristin A. Tufte, Rafael J. Fernández Moctezuma
TREC Final Reports
Traffic-monitoring systems, such as those using loop detectors, are prone to coverage gaps, arising from sensor noise, processing errors and transmission problems. Such gaps adversely affect the accuracy of Advanced Traveler Information Systems. This project will explore models based on historical data that can provide estimates to fill such gaps. We build on an initial study by Mr. Rafael J. Fernandez-Moctezuma, using both a linear model and an artificial neural network (ANN) trained on historical data to estimate values for reporting gaps. These initial models were 80% and 89% accurate, respectively, in estimating the correct speed range, and misclassifications were …
Spatial Patterns Of Air Toxins In The Region, Linda Acha George, Vivek Shandas
Spatial Patterns Of Air Toxins In The Region, Linda Acha George, Vivek Shandas
Urban Studies and Planning Faculty Publications and Presentations
This Atlas draws on the Portland Air Toxics Assessment (PATA) study to explore the regional variation of air quality. The PATA study presents an extraordinary opportunity to think about how the creation of new information can help us better plan our cities, but it also challenges us to think about the impacts of the choices we make.