Citizenship
· Industrial Chair at CSMR 2011
· Review Board member for the International Journal of Strategic Decision Sciences (IJSDS)
· Program Chair for the 3rd Int’l Workshop on “System Quality and Maintainability” (SQM 09).
· Program Co-Chair and Editor for the Proc. 12th Conference on Software Maintenance and Reengineering (CSMR 2008).
· Chair of a special session for the IEEE 11th Conference on Software Maintenance and Reengineering (CSMR 2007) on System Quality and Maintainability.
· Chair of a session at the 2nd SOSoRNet workshop.
· Organizer of the 1st SOSoRNet workshop and co-organizer of the joint event on Service-enabled Collaborative Enterprises
· Executive committee member and Chair of the Doctoral Symposium at IEEE CSMR 05.
· General Chair of the 4th Pennine Research Forum.
· Organising Committee member for the IEEE IS 06.
· Program Committee member for:
o IEEE COMPSAC 03 and COMPSAC 04
o IEEE IWPC 04
o IEEE IDEAL 04
o IBIMA 06
o IEEE WCCI 08 (IJCNN 08, FUZZ-IEEE 08 and the IEEE CEC 08)
o AISEW 08, AISEW 09, SQM 08, SQM 10 and SQM 11
o KDIR 2009, KDIR 10 and KDIR 2011
o
o
IASTED SE 05, SE 06, SE 07, SE 08, SE 09, SE 10, SE 11 and SE
12
o IEEE ISNN 06, ISNN 07, ISNN 08, ISNN 09, ISNN 10, ISNN 11 and ISNN 12.
o ICSI 10 , ICSI 11 and ICSI 12
o IEEE KASET 2007, ICICIP 2010, PROFES 11, ΙΕΕΕ SIS 2011 and JIMSE 12
o IEEE CIS 05, CIS 06, CIS 07, CIS 08, CIS 09, CIS 10, CIS 11, CIS 12 and CIS 13
o CSMR 09, CSMR 10 , CSMR 11, CSMR 12 and CSMR 13
· Invited speaker at the NCAF workshop on Analysis of Multimodal and High-Dimensional Data
· Invited speaker at AISEW 08.
· Member of the DTI sponsored UK Data Storage Network
· Member of the Technical Chamber Of Greece
He has acted as a reviewer for journals including the IEEE Transactions on Computers, Journal of Data & Knowledge Engineering, ACM Transactions on Autonomous and Adaptive Systems, Science of Computer Programming, Journal of Software Maintenance and Evolution, Journal of Empirical Software Engineering, Automated Software Engineering Journal, Software Quality Journal, IEEE Transactions on Systems, Man, and Cybernetics-Part C, Journal of Mathematical Modelling and Algorithms, Int’l Journal of Web Engineering and Technology, the IEE Software journal, and Computers & Education. He has also acted as a reviewer for Int'l Conferences including IEEE ICSM, IEEE APSEC, IEEE STEP, IEEE IIT, Europar, AMCIS, and PCI.