Conference Proceedings Co-Editor, 25th International Conference on Digital Signal Processing, Limassol, Cyprus, 26-28 June, 1995.
Guest Editor, ACM SIGAPP, Applied Computing Review, Fall 1998, special issue on Coordination Models, Languages and Applications.
Member of the Editorial Board,
Journal of Universal Computer Science.
Member of the Editorial Board,
International Journal of Computers and Their Applications, ISCA.
Member of the Editorial Board,
International Journal of Computers and Applications, IASTED.
Track Chairman on Theory and Algorithms,
1997 International Conference on Parallel
and Distributed Systems (ICPADS'97)
, Seoul, Korea, 11-13 December, 1997.
Track Chairman, Track on Coordination
Models, Languages and Applications, Thirteenth ACM Symposium on Applied Computing (SAC'98), Atlanta, Georgia,
USA, 27 February - 1 March, 1998.
Technical Program Chairman, EURO-MED NET 98, Nicosia, Cyprus, 4-7 March, 1998.
Program Co-Chairman, International Workshop on Electronic Commerce on the Internet, in conjunction with EURO-MED NET 98, Nicosia, Cyprus, 4-7 March, 1998.
Program Chairman, International Workshop on Coordination Technologies for Information Systems (CTIS'98), Vienna, Austria, 28 August, 1998, in conjunction with DEXA'98.
Track Chairman, Track on Coordination
Models, Languages and Applications, Fourteenth ACM Symposium on Applied Computing (SAC'99), San Antonio, Texas,
USA, 28 February - 2 March, 1999.
Track Chairman, Track on Coordination
Models, Languages and Applications, Fifteenth ACM Symposium on Applied Computing (SAC2000), Villa Olmo, Como, Italy,
19-21 March, 2000.
Program Co-Chairman, Sixteenth ACM Symposium on Applied Computing (SAC2001), Las Vegas, USA, 11-14 March, 2001.
Program Co-Chairman, Seventeen ACM Symposium on Applied Computing (SAC2002), Madrid, Spain, 10-14 March, 2002.
Steering Committee Member, Fifth International Conference on Coordination Models and Languages, York, UK, 8-11 April, 2002.
Program Co-Chairman, Eighteenth ACM Symposium on Applied Computing (SAC2003), Melbourne, Florida, USA, 9-12 March, 2003.
Steering Committee Member, Sixth International Conference on Coordination Models and Languages, Pisa, Italy, 24-27 February, 2004.
Symposium Co-Chair, Nineteenth ACM Symposium on Applied Computing (SAC2004), Nicosia, Cyprus, 14-17 March, 2004.
Steering Committee Member, Seventh International Conference on Coordination Models and Languages, Namur, Belgium, 20-23 April, 2005.
General Chair, Distributed Computing Techniques (DisCoTec'07), Paphos, Cyprus, 5-8 June, 2007.
General Chair, Eighth International Conference on Algorithms and Architectures for Parallel Processing (ICA3PP 2008)
, Agia Napa, Cyprus, 9-11 June, 2008.
Organizing Committee Chair, Twenty Second European Conference on Object-Oriented Programming (ECOOP'08), Paphos, Cyprus, 7-11 July, 2008.
Program and Organizing Chair, Seventeenth International Conference on Information Systems Development (ISD 2008), Paphos, Cyprus, 25-27 August, 2008.
Conference Chair, Seventh European Conference on e-Learning (ECEL 2008), Agia Napa, Cyprus, 6-7 November, 2008.
Program Vice Chair, Tenth IEEE International Conference
on High Performance Computing and Communications (HPCC-08)
, Dalian, China, 25-27 September, 2008.
Program Co-Chair, Third International Symposium on Intelligent and Distributed Computing (IDC'2009), Ayia Napa, Cyprus, 12-14 October, 2009.
Program Co-Chair, Seventh IEEE European Conference on Web Services (ECOWS'09), Eindhoven, The Netherlands, 9-11 November, 2009.
Eighth International Conference on Computing and Information (ICCI'96), University
of Waterloo, Canada, 19-22 June, 1996.
Third International Conference on Parallel and Distributed Processing Techniques and Applications (PDPTA'97)
, Las Vegas, Nevada, USA, 30 June - 2 July, 1997.
Tenth ISCA International Conference on Parallel and Distributed Computing Systems
(PDCS-97)
, New Orleans, Louisiana, USA, 1-3 October, 1997.
Ninth IASTED International Conference on Parallel and Distributed Computing and
Systems (PDCS'97)
, Washington D.C., USA, 13-16 October, 1997.
Sixth Hellenic Conference on Informatics, Thessaloniki, Greece, October, 1997.
ACM International Conference on Supporting Group Work (GROUP'97), Phoenix, Arizona, USA, 16-19 November, 1997.
Ninth International Conference on Computing and Information (ICCI'98), Winnipeg, Manitoba, Canada, 17-20 June, 1998.
Seventh
ISCA
International Conference on Intelligent Systems (ICIS-98), Paris, France,
1-3 July, 1998.
Fourth International Conference on Parallel and Distributed Processing Techniques and Applications (PDPTA'98)
, Las Vegas, Nevada, USA, 13 - 16 July, 1998.
Third IFCIS Conference on Cooperative Information Systems (CoopIS'98), New
York, USA, 20-22 August, 1998.
International Workshop on Business Process Reengineering and Supporting Technologies for Electronic Commerce
, Vienna, Austria, 28 August, 1998, in conjunction with DEXA'98.
Fourth International Workshop on Multimedia Information Systems (MIS'98), Istanbul, Turkey, 24-26 September, 1998.
Minitrack on Electronic Commerce Technologies, Thirty Second Hawaii International Conference on System Sciences (HICSS-32), Maui, Hawaii, 5-8 January, 1999.
First Mediterranean International Conference on Computer Technologies (MICCT'99), Tizi Ouzou, Algeria, 3-5 May, 1999.
Third International Conference on Business Information Systems (BIS'99), Poznan, Poland, 14-16 April, 1999.
ACM International Conference on Supporting Group Work (GROUP'99), Phoenix, Arizona, USA, 14-17 November, 1999.
First International Symposium on Telemedicine and Teleeducation in Practice (ISTEP-2000), Kosice, Slovak Republic, 22-24 March, 2000.
Eighth International Conference on High Performance Computing and Networking Europe (HPCN2000), Amsterdam, The Netherlands, 8-10 May, 2000.
Fifth IFCIS International Conference on Cooperative Information Systems (CoopIS2000), Eilat, Israel, 6-8 September, 2000.
Fourth International Conference on Coordination Models and Languages (Coordination2000), Limassol, Cyprus, 11-13 September, 2000.
Tenth International Conference on Computing and Information (ICCI2000), Kuwait, 18-21 November, 2000.
International Electronic Commerce Minitrack on Trading of Intangible Goods, 34th Hawaii International Conference on System Sciences (HICSS-34), Maui, Hawaii, 3-6 January, 2001.
Web Services, e-Business, and the Semantic Web (WES): Foundations, Models, Architecture, Engineering and Applications
, Toronto, Ontario, Canada, 27-28 May, 2002, in conjunction with CAiSE 2002.
The Xth European Conference on Information Systems (ECIS 2002), Gdansk, Poland, 6-8 June, 2002.
International Workshop on Distributed Event-Based Systems (DEBS'02), Vienna, Austria, 2-3 July, 2002, in conjunction with ICDCS-2002.
Fifth International Conference on Enterprise Information Systems (ICEIS 2003), Angers, France, 23-26 April, 2003.
Web Services, e-Business, and the Semantic Web (WES): Foundations, Models, Architecture, Engineering and Applications
, Klagenfurt/Velden, Austria, 16-17 June, 2003, in conjunction with CAiSE 2003.
Ninth International Conference on Object-Oriented Information Systems (OOIS'03), Geneva, Switzerland, 2-5 September, 2003.
First South-East European Workshop on Formal Methods, Thessaloniki, Greece, 20 November 2003, in conjunction with the First Balkan Conference in Informatics.
Sixth International Conference on Enterprise Information Systems (ICEIS 2004), Porto, Portugal, 14-17 April, 2004.
Thirteenth International Conference on Information Systems Development (ISD'2004), Vilnius, Lithuania, 9-11 September, 2004.
Eighth International Workshop on Cooperative Information Agents (CIA 2004), Erfurt, Germany, 27-29 September, 2004.
Second International Conference on Service Oriented Computing (ICSOC'04), New York City, NY, USA, 15-18 November, 2004.
International Conference on E-Business and E-learning (EBEL'05), Amman, Jordan, 23-24 May, 2005.
Seventh International Conference on Enterprise Information Systems (ICEIS 2005), Miami, Florida, USA, 24-28 May, 2005.
Fifth IFIP WG 6.1 International Conference on Distributed Applications and Interoperable Systems (DAIS 2005)
, Athens, Greece, 15-17 June, 2005.
International E-Business Conference (IEBC 2005), Tunis, Tunisia, 24-25 June, 2005.
Twenty Ninth Annual International Computer Software and Applications Conference (COMPSAC 2005), Edinburgh, Scotland, UK, 25-28 July, 2005.
Fourteenth International Conference on Information Systems Development (ISD'2005), Karlstad University, Sweden, 15-17 August, 2005.
Eighth International Conference on Parallel Computing Technologies (PaCT-2005), Krasnoyarsk, Russia, 5-9 September, 2005.
Ninth International Conference on Enterprize Distributed Object Computing (EDOC 2005), Enschede, Netherlands, 19-23 September, 2005.
IPM International Workshop on Foundations of Software Engineering (FSEN05), Tehran, Iran, 4-6 October, 2005.
Eleventh International CSI Computer Conference (CSICC'06), Tehran, Iran, 24-26 January, 2006.
Eighth International Conference on Enterprise Information Systems (ICEIS 2006), Paphos, Cyprus, 23-27 May, 2006.
Sixth Workshop on Next Generation Information Technologies and Systems (NGITS 2006), Kibbutz Shefayim, Israel, 4-6 July, 2006.
International Workshop on Self-Adaptability and Self-Management of Context-Aware Systems (SELF'06), Silicon Valley, USA, 19-21 July, 2006.
Fifteenth International Conference on Information Systems Development (ISD'2006), Budapest, Hungary, 31 August - 2 September, 2006.
Thirtieth Annual International Computer Software and Applications Conference (COMPSAC 2006), Chicago, Illinois, USA, 18-21 September, 2006.
Tenth International Conference on Enterprize Distributed Object Computing (EDOC 2006), Hong Kong, 16-20 October, 2006.
First International Workshop on Mobile Services and Personalized Environments (MSPE'06), Aachen, Germany, 16-17 November, 2006.
IPM International Symposium on Fundamentals of Software Engineering (FSEN07), Tehran, Iran, 17-19 April, 2007.
Seventh International Conference on Algorithms and Architectures for Parallel Processing (ICA3PP-07)
, Hangzhou, China, 11-14 June, 2007.
Ninth International Conference on Enterprise Information Systems (ICEIS 2007), Funchal, Madeira, Portugal, 12-16 June, 2007.
Sixteenth International Conference on Information Systems Development (ISD'2007), Galway, Ireland, 29-31 August, 2007.
Sixth International Workshop on the Foundations of Coordination Languages and Software Architectures (FOCLASA 2007)
, Lisbon, Portugal, 8 September, 2007, in conjunction with CONCUR 2007.
The IFIP TC8 International Conference on Research and Practical Issues of Enterprise Information Systems (CONFENIS 2007)
, Beijing, China, 14-16 October, 2007.
Eleventh International Conference on Enterprize Distributed Object Computing (EDOC 2007), Annapolis, Maryland, USA, 15-19 October, 2007.
First International Symposium on Intelligent and Distributed Computing (IDC'2007), Craiova, Romania, 18-20 October, 2007.
The Thirteenth International Conference on Parallel and Distributed Systems (ICPADS'2007), National Tsing Hua University, Hsinchu, Taiwan, 5-7 December, 2007.
International IEEE Workshop on Coordination Models and Applications (CoMA): Knowledge in Pervasive Environments
, Rome, Italy, 23-25 June, 2008.
Seventh International Workshop on the Foundations of Coordination Languages and Software Architectures (FOCLASA'08)
, Reykjavik, Iceland, 13 July, 2008.
Twelveth International Conference on Enterprize Distributed Object Computing (EDOC 2008), Munich, Germany, 15-18 September, 2008.
Second International Symposium on Intelligent Distributed Computing (IDC'2008), Catania, Italy, 18-20 September, 2008.
Thirty Fifth International Conference on Current Trends in Theory and Practice of Computer Science (SOFSEM 2009)
, Spindleruv Mlyn, Czech Republic, 24-30 January, 2009.
Seventh Conference on Next Generation Information Technologies and Systems (NGITS 2009), Haifa, Israel, 15-18 June, 2009.
Eighth International Workshop on the Foundations of Coordination Languages and Software Architectures (FOCLASA'09)
, Rhodes, Greece, 11 July, 2009.
Twelfth IEEE International Conference on Computational Science and Engineering (CSE-09), Vancouver, Canada, 29-31 August, 2009.
Eighth Working IEEE/IFIP Conference on Software Architecture and Third European Conference on Software Architecture (WISCA/ECSA 2009)
, Cambridge, UK, 14-17 September, 2009.
Fourth Balkan Conference in Informatics, Thessaloniki, Greece, 17-19 September, 2009.
International Workshop on Location-based services (LBS) and applications, Vienna, Austria, 22 September, 2009.
Sixth International Conference on Computing and Information (ICCI'94), Peterborough, Canada, 26-28 May, 1994.
Fourth International Conference on Parallel Computing Technologies (PaCT-97),
Yaroslavl, Russia, 8-12 September, 1997.
First International Conference on the Telemedical Information Society (ITIS'98), Amsterdam, The Netherlands, 21-23 April, 1998.
Eighth International Conference on High Performance Computing and Networking Europe (HPCN2000), Amsterdam, The Netherlands, 8-10 May, 2000.
IEEE
Software
, IEEE Computer Society.
IEEE Transactions on Software Engineering, IEEE Computer Society.
International Journal on Computer Systems Science and Engineering, CRL Publs.
Journal of Systems and Software, Elsevier Science.
Microprocessors and Microsystems, Elsevier Science.
Parallel Computing, Elsevier Science.
Parallel and Distributed Computing Practices, Nova Science Publishers.
L'OBJET: Software, Databases, Networks, Hermes.
Third Golden West International Conference on Intelligent Systems (GWIC'94), Las Vegas, Nevada, USA, 6-8 June, 1994.
First International Symposium on Parallel Symbolic Computation (PASCO'94),
Linz, Austria, 26-28 September, 1994.
XVIII International Symposium on Multimedia and Hypermedia Systems (MIPRO'95), Rijeka, Croatia, 22-26 May, 1995.
Eleventh ACM Symposium on Applied Computing, (SAC'96) - Track on Programming
Languages, Philadelphia, Pennsylvania, USA, 17-19 February, 1996.
Fourth International Conference on Parallel Architectures and Compilation Techniques (PACT'96), Boston, MA, USA, 20-23 October, 1996.
Twelfth ACM Symposium on Applied Computing, (SAC'97) - Track on Programming
Languages, San Jose, Ca., USA, 28 February - 2 March, 1997.
Thirtieth Hawaii International Conference on Systems Science (HICSS-30) - Minitrack on Coordination Languages, Models, Systems, Hawaii, USA, 7-10 January,
1997.
Thirtieth Hawaii International Conference on Systems Science (HICSS-30), Minitrack on Software Engineering for Distributed Systems, Hawaii, USA, 7-10 January, 1997.
Fifth European Conference on Information Systems (ECIS'97), Cork, Ireland,
19-21 June, 1997.
Second IEEE Symposium on Computers and Communications (ISCC'97), Alexandria, Egypt, 1-3 July, 1997.
First Panhellenic Symposium on Logic, Nicosia, Cyprus, 21-24 July, 1997.
Eleventh International Workshop on Distributed Algorithms (WDAG'97), Saarbrucken,
Germany, 24-26 September, 1997.
International Symposium on High Performance Computing (ISHPC'97), Fukuoka, Japan, 4-6 November, 1997.
Thirteenth ACM Symposium on Applied Computing (SAC'98), Track on Programming Languages, Atlanta Marriot, Atlanta, USA, 27 February - 1 March, 1998.
International Workshop on Issues and Applications of Database Technology (IADT'98), Berlin, Germany, 6-9 July, 1998.
EURO-PAR'98, Southampton, UK, 1-4 September, 1998.
Fourteenth International Conference on Supercomputing (ICS'2000), Santa Fe, New Mexico, USA, 8-11 May, 2000.

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