1. Department of Engineering & Public Policy, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, United States
2. Department of Civil and Architectural Engineering, University of Wyoming, Laramie, Wyoming 82071, United States
3. Carnegie Mellon Electricity Industry Center, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, United States
4. Department of Social & Decision Sciences, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, United States