1. Graduate School of Environmental Studies, Seoul National University, Main Campus, Gwanak, 599 Gwanak-Ro, Gwanak-Gu, Seoul 151-742, South Korea.
2. Korea Research Institute for Human Settlements, National Infrastructure Research Division, 224 Simin-Ro, Dongan-Gu, Anyang-Si, Gyeonggi-Do 431-712, South Korea.
3. Department of Architecture, Urban Planning, and Design, University of Missouri–Kansas City, 5100 Rockhill Road, Katz Hall 106C, Kansas City, MO 64110-2499.