M. A. Aziz-Alaoui Cyrille Bertelle Michel Cotsaftis Gérard H.E. Duchamp EPNACS’2007 Emergent Properties in Natural and Artificial Complex Systems in ECCS'O7 European Conference on Complex Systems October 4 th , 2007 © EPNACS'2007 within ECCS'07, Dresden (Germany), October 4th, 2007 1