[1] Nagasaki Univ, Grad Sch Fisheries & Environm Sci, 1-14 Bunkyo Machi, Nagasaki 8528521, Japan
[2] Matsuyama Univ, Fac Econ, Matsuyama, Ehime, Japan
[3] Kyushu Univ, Sch Engn, Urban Inst, Fukuoka, Japan
[4] Kyushu Univ, Sch Engn, Dept Urban & Environm Engn, Fukuoka, Japan