Abstract :
On behalf of the Local Organizing Committee it is my pleasure to welcome you to Bari for the 6th edition of MeMeA´11. I would like to thank all those who have made this Symposium possible. First of all I thank the members of the Organizing Committee for all their hard work and dedication, the Technical Program Committee and the Steering Committee that have the merit to prepare an excellent Technical Program, the Reviewers who have reviewed more than 150 papers, and the Authors who are here to present the results of their scientific and technical research. Thanks are also due to the sponsors of this International Symposium for their support, they have all been of invaluable help to us in the preparation of this event.