(Sao Carlos)International Symposium"Computerized Operation of power Systems" International Symposium"Computerized Operation of power Systems" (Canada)INternational Symposium on Computer Message Systems (Vienna)International Symposium on Modelling and Pergormance Evaluation of Computer Systems (Lyngby)International Symposium on Wind Energy Systems (Shrivenham)International symposium on sciontific software systems Miami International Symposium on Metal-Hydrogen Systems IEEE International Symposium on Circuits and Systems (Santa Fe)International Symposium on Polarization phenomena in Nuclear Physics (Amsterdam)International Symposium on Computer performance Modeling