[Wang Zhi-yuan;Chen Hai-ting] Univ South China, Sch Architecture, Hengyang 421001, Hunan, Peoples R China.^[Wang Zhi-yuan] Cent South Univ, Sch Architecture & Art, Changsha 41007, Hunan, Peoples R China.^[Ou Yang-mei] Hunan Inst Traff Engn, Hengyang 42100, Hunan, Peoples R China.