urban Systems( IPMU 2012), Catania, Italy, July 9-13, 2012. International Student Conference on Applied Mathematics and Responses( ISCAMI 2012), Malenovice, Czech Republic, May 10-13, 2012. International Conference on Fuzzy Set Theory and Applications( FSTA 2012), Liptovský Já code, Slovak Republic, January 30 - February 3, 2012. International Conference on Intelligent Systems Design and Applications( ISDA 2011), Có rdoba, Spain, November 22-24, 2011.