8Th International Symposium on Parallel and Distributed Computing, Date: JUN 30-JUL 04, 2009, Location: Lisbon, PORTUGAL, Sponsors: Inst. Eng. Sist. Comput. - Invest. Desenvolv. INESC-ID;Instituto Superior Tecnico (IST);Portuguese Foundation for Science and Technology (FCT);IEEE Portugal Section;TU Lisbon