Chris Rehmann

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Daniel W. Schneider*, James A. Stoeckel, Chris R. Rehmann, K. Douglas Blodgett, Richard E. Sparks and Dianna K. Padilla Department of Urban and Regional Planning, University of Illinois at Urbana-Champaign and Center for Aquatic Ecology, Illinois Natural History Survey, Champaign, IL 61820, USA Department of Zoology, Miami University, Oxford, OH 45056, USA(More)
To improve the modeling of water quality in watersheds, a model is developed to predict resuspension of Escherichia coli from sediment beds in streams. The resuspension rate is expressed as the product of the concentration of E. coli attached to sediment particles and an erosion rate adapted from work on sediment transport. The model uses parameter values(More)
The effect of interactions between the sediment and water column on concentrations of microbes in streams is quantified with a one-dimensional, steady state model. The effects of nine main parameters describing the flow, sediment transport, and microbial growth and decay are encapsulated in two dimensionless parameters: the Damköhler number Da, or the ratio(More)
This study describes the development of WACCShed, an agent-based software platform that permits the systematic study of interactions among hydrology, climate, and strategic human decision-making in a watershed over time. To illustrate the capabilities of the platform, findings are reported for a base-case application reflecting, in simplified form, the(More)
An NSF Scholarships in STEM (S-STEM) program has provided scholarships for cohorts of undergraduate engineering students since 2009, giving specific attention to the National Academy of Engineering’s vision for the engineer of 2020 (E2020). Four E2020 outcomes are emphasized in Iowa State’s program: leadership, global awareness and understanding, systems(More)
To prepare the engineer of 2020 to address the grand challenges of engineering, the E2020 Scholars Program at Iowa State University seeks to have students become proficient in four pillar areas: leadership, innovation, global awareness, and systems thinking. Each pillar is introduced in three weeks in a freshman-level seminar and reinforced in half of a(More)
This study describes the architecture and capabilities of an open source agent-based Java platform that permits the systematic study of interactions among hydrology, climate, and strategic human decision-making in a watershed over time. To demonstrate the platform’s use and capabilities, an application is presented in accordance with ODD protocol(More)
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