1. Institute of Transportation Studies, University of California, Davis, California
2. Energy and Environmental Systems Group, Institute for Sustainable Energy, Environment and Economy, University of Calgary, Calgary, Alberta, Canada
3. Department of Energy Resources Engineering, Stanford University, Stanford, California
4. Department of Integrative Biology, University of Guelph, Guelph, Ontario, Canada
5. Civil, Architectural, and Environmental Engineering Department, Drexel University, Philadelphia, Pennsylvania