1. Department of Civil and Environmental Engineering, University of Washington, Seattle, Washington 98195, United States
2. Department of Civil and Environmental Engineering, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, United States
3. Department of Civil, Architectural and Environmental Engineering, The University of Texas at Austin, Austin, Texas 78712, United States
4. Department of Bioproducts and Biosystems Engineering, University of Minnesota, St. Paul, Minnesota 55108, United States
5. Department of Engineering and Public Policy, Tepper School of Business, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, United States