‘å�ãŽs—§‘åŠw�@‘åŠw‰@�HŠwŒ¤‹†‰È�@“sŽsŒn�ê�U Osaka City University, Graduate School of Engineering, Department of Urban Engineering �³‚µ‚¢URL‚Ö–ß‚Á‚ĉº‚³‚¢�B