I am/was involved in the following activities:

Programme Chair

Program co-chair of the 4th International Workshop on Architectures, Concepts and Technologies for Service Oriented Computing (ACT4SOC 2010), Athens, Greece, 23 July, 2010

Publications chair of the 4th International Semantic Web Conference (ISWC 2005), Galway, Ireland, 6-10 November, 2005

Program co-chair of the second WSMO Implementation Workshop (WIW '05), Innsbruck, Austria, 6-7 June, 2005

Reviewer

Computing Reviews

Initiatives

Member of Conceptual Models for Services (CMS) Working Group. Page available at: http://cms-wg.sti2.org/home/

Member of Web Service Execution Environment (WSMX) Working Group. Page available at: http://www.wsmx.org/

Standardisation

Member of the W3C Semantic Annotations for WSDL and XML Schema Working Group. Page available at: http://www.w3.org/TR/sawsdl/

Co-editor of the W3C Semantic Annotations for WSDL and XML Schema Usage Guide. Page available at: http://www.w3.org/TR/sawsdl-guide/

Founder member of the OASIS Semantic Execution Environment Technical Committee (SEE TC) November 2005. Page available at: http://www.oasis-open.org/committees/tc_home.php?wg_abbrev=semantic-ex

Co-author of the Web Service Execution Environment, W3C Member Submission - WSMO, June 2005. Page available at http://www.w3.org/Submission/WSMX/

Presentations and Tutorials

Invited Presentation at Semantic Technology Conference - Semantic Process Overlays: Delivering Business Processes through Overlay Networks. San Jose, CA, USA. June, 2009

Tutorial - Semantic Web Services at the International Conference on Internet and Web Applications and Services (ICIW 2006), Guadeloupe, French Caribbean, February 23-25, 2006.

Tutorial - Semantic Web Services Systems and Tools at the Fifth International Conference on Sematic Web Services (ISWC 2005), Galway, Ireland, 6-10 November, 2005.