Professional Activities:

• Member of Technical Program Committees of the following Conferences: IEEE CSIE 2009, IASTED WOC 2009, IARIA INTENSIVE 2009, IARIA ICIW 2008-2009, IEEE MASS 2008, ACM MULTIMEDIA 2004, 2005, 2006; IEEE ICME 2004, 2005; WCNC 2005, AAMAS 2005, IASTED IMSA 2006, ACM Multimedia Service Composition Workshop 2006
  
• On the Editorial Board of the Mobile Multimedia Journal since 2005 and International Journal On Advances in Software since 2009
  
• Chair of the sessions of the following conferences: ICN 2008, AHM 2004, IWT 2004.
  
• Co-chair of the following workshops: ACM IEEE MobiQuitous 2009, GADA 2004, SAG 2004.
  
• Reviewer for the following journals: IEEE Transactions on Mobile Computing, ACM Transactions on Embedded Computing Systems, IEEE Transactions on Evolutionary Computation, MIT Press PRESENCE journal, IEEE MultiMedia journal, IEEE Transactions journal, Concurrency and Computation: Practice and Experience, ACM VRST conference, IEEE Transactions on Networking, ACM Transactions on Multimedia Computing, Communicationsi and Applications
  
• Referee for projects submitted to EPSRC (Engineering Physical Sciences Research Council) in UK and for EU projects