CHAIRMAN of the International Conference on Statistical Physics (SigmaPhi2011) Cyprus, 2011 Organizing Committee member and Scientific Program Committee member of the International Workshop on Statistical Physics and Mathematics for Complex Systems (SPMCS) http://sites.google.com/site/spmcsinternationalworkshops/home/2nd-workshop-1 - Center for Complexity Sciences, Wuhan, China, 23-27 october 2010 Advisory Committee member of the International Conference on Nonextensive Statistical Mechanics - Foundations and Applications (NEXT2008) http://www.dfi.uem.br/next2008/ - Foz do Iguaçu, Paraná, Brazil, October 27-31, 2008 CHAIRMAN of the International Conference on Statistical Physics (SigmaPhi2008) http://www.polito.it/SigmaPhi2008 - Kolympari Crete July 14-18, 2008 Advisory Committee member of the International Conference on Applications of Physics in Financial Analysis (APFA6) Lisbon, Portugal, July 4-7, 2007 Advisory Committee member of the International Conference on Applications of Physics in Financial Analysis (APFA5) Torino, Italy, June 29th - July 1st, 2006 CHAIRMAN of the International Conference on News, Expectations and Trends in Statistical Physics (NEXTSigmaPhi) http://www.polito.it/NEXT-SigmaPhi - Kolympari Crete Greece, August 13-18, 2005 COORDINATOR of the Organizing Committee of the International Conference on News and Expectations in Thermostatistics (NEXT2003), Cagliari Italy, September 22 -28, 2003 Organizing Committee member of the International School and Workshop on Nonextensive Thermodynamics and Physical Applications (NEXT2001), Cagliari Italy, May 23 -30, 2001 Organizing Committe member of the International Symposium on Physics and Applications of Amorphous Semiconductors (second edition ), Torino Italy, September 12-16, 1988 Organizing Committee member of the International Symposium on Physics and Applications of Amorphous Semiconductors, (first edition ) Torino Italy, September 14-18, 1987