General Chair:

2nd International Conference on Distributed Event Based Systems, Rome, Italy, 2nd-4th July 2008

General Chair of the Workshop on Foundations of Middleware Technologies (WFoMT ,2002), Irvine, 2002 .

Chairmanships:

26th Symposium on Reliable Distributed Systems, Bejing, China, 10th-12th October 2007

Autonomics 2007 Conference, Frascati, Italy, November, 2007

PC Chair of the "distributed algorithms" track of the 19th IEEE International Conference on Distributed Computing Systems (ICDCS-99), 1999

PC Co-chair of the ACM International Workshop on Principles of Mobile Computing (POMC), 2002

General Chair of the 8th IEEE Workshop on Object Oriented Real-time Dependable Systems (WORDS), 2003

PC-Co-Chair of the 7th International Workshop on Assurance in Distributed Systems and Networks (ADSN), 2006

PC Chair of the 6-th IEEE International Workshop on Object-Oriented Real-Time De­pendable Systems, 2001.

Chair of the Tutorial Section of the 3-rd International Symposium on Distributed Object Applications, Sept. 2001.

Member of the following Program Committees:

International Service Availability Symposium, 2008

IEEE International Conference on Distributed Computing Systems, 1998, 2002, 2005.

International Conference on Dependable Systems and Networks, 2004, 2005, 2006, 2008

International Conference on Pervasive Computing and Communica­tions, (PERCOM), 2005.

International Conference on Parallel and Distributed Systems, 2005.

European Conference on Dependable Computing (EDCC), 2005, 2006, 2008

EUROPAR International Conference, 1999

International Symposium on Distributed Objects and Applications (DOA), 2002, 2003, 2004.

International Symposium on Distributed Algorithms (DISC), 2002.

International Symposium on Distributed Algorithms (DISC), 2002.

International Symposium on Reliable Distributed Systems (SRDS), 1998, 2005.

International Conference on Cooperative Information Systems (COOPIS), 2001 .

IEEE International Symposium on Object-Oriented Real-Time Dis­tributed Computing (WORDS) 2001, 2002, 2005

Workshop on Concurrency in Dependable Computing, 2001.

International Workshop on Assurance in Distributed Systems and Net­works (ADSN), 2005

IEEE International Conference on Pervasive Services (ICPS), 2005

IEEE International Symposium on High Assurance Systems Engineering (HASE) 2005

International Workshop on Distributed Computing (IWDC) 2005

International Conference on Parallel and Distributed Systems (ICPADS) 2005

IEEE Intl. Conf. on Advanced Information Networking and Applications (AINA), 2006

International Workshop on Innovative Internet Community System (I2CS) 2006

Recent Invited Talks and Keynotes:

MINEMA summer school, Klegenfurt, July 2005

International Workshop on Dynamic Distributed Systems (IWDDS), July 3rd 2006

Joint US-EU-TEKES workshop: Long Term Challenges in High Confidence Composable Embedded Systems, Helsinki, 21-23 June 2006

EU / US Summit Series on Cyber Trust: System Dependability & Security , Dublin, 15-16 November 2006

Seminaire du LAAS, Tolouse, France December 7th

EU / US Summit Series on Cyber Trust: System Dependability & Security , Monticello, Illinois, USA, 26-27 April 2007

Networked Embedded Control Systems: EU Information Day, Brussels, 22-23 May 2007

4th International Workshop on Dependable Embedded Systems (WDES 2007), October 9th 2007 Beijing, China

Winter school on Hot Topics in Distributed Computing, La Plagne (Francia), March 9th to March 14th 2008