International Scientific Journals Editorial Board Member
- Associate Editor, Transactions on Emerging Telecommunications Systems (Wiley & Sons Ltd.), since 2011.
- Associate Editor, International Journal of Communications Systems (Wiley & Sons Ltd.), since 2012.
- Editor, Advances on Internet Technology Journal (IARIA), since 2012.
Reviewer of International Scientific Journals
- IEEE Sensors, since 2012
- IEEE Transactions on Network and Service Management, since 2012
- IEEE Internet Computing Magazine, since 2010.
- IEEE Transactions on Systems, Man and Cybernetics—Part C: Applications and Reviews, since 2011.
- IEEE Communication Letters, since 2011.
- IEEE Systems, since 2012
- IET Information Security Journal, since 2008.
- European Journal of Operational Research (Elsevier Science B.V.), since 2009.
- Electronic Commerce Research and Applications (Elsevier Science B.V.), since 2009.
- Security and Communication Networks (Wiley & Sons Ltd.), since 2012.
- The Computer Journal (Oxford Press), since 2012.
- Pervasive & Mobile Computing Journal (Elsevier Science B.V.) (2010).
- Computer Networks Journal (Elsevier Science B.V.) (2003).
- Journal of Personal and Ubiquitous Computing, Springer (2009).
- International Journal of Internet Protocol Technology (Inderscience Publishers) (2008).
- Journal of Computer Assisted Learning (Wiley & Sons Ltd.) (2009).
- Encyclopedia of E-Business Development and Management in the Digital Economy (IGI-Global) (2010).
- Semantics in Adaptive and Personalised Services: Methods, Tools and Applications, Springer Series on Studies in Computational Intelligence (SCI) (2008).
Program Chair of International Scientific Conferences
- 2013 International Conference on Computer, Information and Telecommunication Systems (CITS 2013), May 2013, Athens, Greece.
Technical Program Committee Member of International Scientific Conferences
- 2013 International Symposium on Security in Computing and Communications (SSCC 2013), Mysore, India, August 2013.
- 4th International Conference on Optical Communication Systems (OPTICS 2013), Reykjavic, Iceland, July 2013.
- 8th International Conference on Internet and Web Applications and Services (ICIW 2013), May 2013.
- 8th International Conference on Digital Communications (ICDT 2013), Venice, Italy, April 2013.
- The IADIS Mobile Learning 2013 International Conference, Lisbon, Portugal, March 2013.
- 2012 IEEE Asia-Pacific Conference on Applied Electromagnetics (APACE 2012), Melaka, Malaysia, December 2012 (Program Committee as designated reviewer)
- 4th International Conference on Networks & Communications (NetCoM 2012), Chennai, India, December 2012
- 5th International ICST Conference on Mobile Wireless Middleware, OSs, and Applications (MOBILWARE 2012)– Annual Theme: "Mobile Middleware for M2M Interaction and Smart City Applications", Berlin, Germany, November 2012.
- 2012 IEEE International Conference on Internet of Things (IoT 2012), Besancon, France, November 2012.
- 16th Panhellenic Conference on Informatics (PCI 2012) with international participation, Piraeus, Greece, October 2012.
- International Workshop on Fiber Optics at Access Network (FOAN 2012) co-located with the IEEE International Conference on Ultra Modern Telecommunications (ICUMT 2012), St. Petersburg, Russia, October 2012.
- IEEE Workshop on Mobile Computing and Networking Technologies (WMCNT) in conjunction with the IEEE International Conference on Ultra Modern Telecommunications (ICUMT 2012), St. Petersburg, Russia, October 2012.
- The IADIS Applied Computing 2012 (AC 2012) International Conference, Madrid, Spain, October 2012.
- The 2012 IEEE International Conference on Systems, Man, and Cybernetics (IEEE SMC 2012), Cybernetics and Systemics Special Sessions, Coex, Seoul, Korea, October 2012. (Program Committee as designated reviewer).
- 2012 IEEE Conference on Control, Systems & Industrial Informatics (ICCSII 2012), Bandung, Indonesia, September 2012 (Program Committee Member as designated reviewer).
- 2012 IEEE Symposium on Wireless Telecommunications Applications (ISWTA 2012), Bandung, Indonesia, September 2012 (Program Committee member as a designated reviewer).
- 7th International Conference on Internet and Web Applications and Services (ICIW 2012), Stuttgart, Germany, May 2012.
- 7th International Conference on Digital Communications (ICDT 2012), Chamonix / Mont Blanc, France, April 2012.
- The IADIS Mobile Learning 2012 International Conference, Berlin, Germany, March 2012.
- 2011 IEEE Globecom Workshop on Mobile Computing and Emerging Communication Networks (GC'11 Workshop MCECN), Houston, Texas, USA, December 2011.
- 3rd International Workshop on Mobile Computing and Networking Technologies (WMCNT 2011) in conjunction with the 2010 International Congress on Ultra Modern Telecommunications and Control Systems (ICUMT 2011), Budapest, Hungary, October 2011.
- IEEE/ACM International Conference on Internet of Things (IoT 2011), Dalian, China, October 2011.
- 22nd IEEE Personal Indoor Mobile Radio Communications Conference (IEEE PIMRC 2011), Local and Personal Area Networks Track, Toronto, Canada, September 2011.
- 15th Panhellenic Conference on Informatics (PCI 2011) with international participation, Kastoria, Greece, September 2011.
- 16th IEEE Symposium on Computers and Communications (IEEE ISCC 2011), Corfu, Greece, June 2011.
- 6th International Conference on Internet and Web Applications and Services (ICIW 2011), St. Maarten, The Netherlands Antilles, March 2011.
- The 2011 International Workshop on Multimedia, Communication and Convergence technologies (MCC 2011) in conjunction with the 5th FTRA International Conference on Multimedia and Ubiquitous Engineering (MUE 2011), Crete, Greece, June 2011.
- The IADIS Mobile Learning 2011 International Conference, Avila, Spain, March 2011
- 5th International Conference on Ubiquitous Information Technologies & Applications (CUTE 2010), Sanya, Hainan, China, December 2010.
- 2010 IEEE Globecom Workshop on Mobile Computing and Emerging Communication Networks (GC'10 Workshop MCECN), Miami, Florida, USA, December 2010.
- IASK (International Association for Scientific Knowledge) International Conference "E-Activity and learning Technologies 2010" (E-ALT 2010), Oviedo, Spain, November 2010.
- 2nd International Workshop on Mobile Computing and Networking Technologies (WMCNT 2010) in conjunction with 2010 International Congress on Ultra Modern Telecommunications and Control Systems (ICUMT 2010), Moscow, Russia, October 2010.
- 5th International Conference on Internet and Web Applications and Services (ICIW 2010), Barcelona, Spain, May 2010.
- The IADIS Mobile Learning 2010 International Conference, Porto, Portugal, March 2010.
- 19th IEEE Annual International Symposium on Personal Indoor Mobile Radio Communications (PIMRC 2009), Tokyo, Japan, September 2009.
- 4th International Conference on Internet and Web Applications and Services (ICIW 2009), Venice, Italy, May 2009.
- The IADIS Mobile Learning 2009 International Conference, Barcelona, Spain, February 2009.
- 18th IEEE Annual International Symposium on Personal Indoor Mobile Radio Communications (PIMRC 2008), Networks Track, Paris, France, September 2008.
- 1st International Conference on Pervasive Technologies Related to Assistive Environments/Workshop on Pervasive Technologies in E/M-Learning and Internet-Based Experiments (PETRA 2008), Athens, Greece, July 2008.
- 13th European Wireless Conference (EW 2007), Paris, France, April 2007.
- 12th European Wireless Conference (EW 2006), Athens, Greece, April 2006.
Reviewer of International Scientific Conferences
- 69th IEEE Vehicular Technology Conference (VTC Spring 2009), Barcelona, Spain, April 2009.
- 15th IST Mobile and Wireless Communications Summit, Myconos, Greece, June 2006
- 16th IEEE Annual International Symposium on Personal Indoor Mobile Radio Communications (PIMRC 2005), Berlin, Germany, September 2005.
Session Organizer at International Scientific Conferences
- 4th International Workshop on Semantic Media Adaptation and Personalization 2009, San Sebastian, Spain, 14-15 December 2009 – Special Session on Intelligence, Adaptation and Personalization on the Web.
Session Chair at International Scientific Conferences
- "Multimedia Services" Session, 15th Pan-Hellenic Conference on Informatics (PCI 2011), Kastoria, Greece, September 2011.
- "Computer and Communications Network" Session, 15th Pan-Hellenic Conference on Informatics (PCI 2011), Kastoria, Greece, September 2011.
- "Wireless Networking Technologies" Session, 2010 International Conference on Wireless Information Networks and Systems (WINSYS 2010), Athens, Greece, July 2010.
- "Specialized Web Applications" Session, 3rd International Conference on Internet and Web Applications and Services (ICIW 2008), Athens, Greece, June 2008.
- "Web and Mobile Business Systems and Services" Session, International Joint Conference on E-Business and Telecommunications (ICETE 2006), Setubal, Portugal, August 2006.
- "Communication and Software Infrastructure" Session, International Joint Conference on E-Business and Telecommunications (ICETE 2006), Setubal, Portugal, August 2006.
- "Wireless Ad-Hoc Networks" Session, 12th European Wireless Conference (EW 2006), Athens, Greece, April 2006.
Invited Speaker
- "Networks – Multimedia and Internet Applications", Department of Informatics and Computer Technology, Technological Educational Institute of Western Macedonia, Kastoria, Greece, 2008.
Member of Scientific Unions, Forums and Technical Chambers
- Member of the IEEE (since 2005)
- Member of the ACM (since 2006)
- Member of the Technical Chamber of Greece (since 1997).
- Member of the IEEE Computer Society Technical Committees "Autonomous and Autonomic Systems" and "Intelligent Informatics" (since 2010).
- Member of the IEEE Systems Man and Cybernetics Society Technical Committee "Distributed Intelligent Systems" and "Self-Organized Distributed Pervasive Systems" (since 2011).
- Member of Net!Works European Technology Platform for communications networks and services - former e-Mobility Forum (since 2010).
- Member of the Committee of National, European Programs and Innovation at the Department of Western Macedonia of the Technical Chamber of Greece (2008-2011).