"Software Retrieval in Grid and Cloud Computing Infrastructures." Colloquium, Dipartimento di Ingegneria dell' Informazione, Second University of Naples, January 28, 2010.
"Effective Keyword Search for Software Resources installed in Large-scale Grid Infrastructures." 2009 IEEE/WIC/ACM Conference on Web Intelligence, September 16, Milan, Italy (available in pdf).
"Improving the Dependability of Grids via Short-term Failure Predictions." CoreGRID ERCIM Working Group Workshop on Grids, P2P and Service computing, in conjunction with EuroPAR 2009, August 24, 2009, Delft, Netherlands (available in pdf).
"Grid Computing Technologies in Intensive Care Medicine." Intensive Care Forum 2008, Limassol, Cyprus, January 26, 2008.
"The Cyprus Grid Initiative." Cyprus Grid Day 2008, Nicosia, Cyprus, January 21, 2008 (available in pdf).
"Τα επαγγέλματα της Πληροφορικής: Διεθνείς Τάσεις και Προοπτικές στην Κύπρο." Innovation in Careers workshop, Cyprus Federation of Female Entrepreneurs/Professionals, Cyprus Chamber of Commerce and Industry, Nicosia, Cyprus, March 6, 2007 (in greek).
"From vision to reality: Grid computing on the EGEE infrastructure." Colloquium, Department of Computer Science, Intercollege, Nicosia, Cyprus, February 22, 2006.
"Towards a Grid Information Knowledge Base." CoreGRID Workshop on Middleware, Euro-Par 2006, August 28, 2006, Dresden.
"Towards a Universal Client for Grid Monitoring Systems." 11th International Workshop on High-Level Parallel Programming Models and Supportive Environments, 20th IEEE International Parallel & Distributed Processing Symposium, (IPDPS 2006), April 25, 2006, Rhodes, Greece (available in ppt).
"CyGrid: Current Status and Future Plans of the Cyprus Grid Initiative." South East Europe Regional Workshop: Towards long-term sustainability of the European Grid Infrastructure. April 19, 2006, Athens, Greece.
"VITP: A Vehicular Information Transfer Protocol." Colloquium, Department of Computer Science, University of Cyprus, March 24, 2006.
"Searching within Large Grid Infrastructures." Parallel Computing Research Seminar of University of Paderborn, Queen's Bay Hotel, Paphos, March 3, 2006 (ppt).
"Αναζητήσεις στο Διαδίκτυο: Μια σύντομη περιήγηση στην Επιστήμη της Πληροφορικής." Science Day, School of Pure and Applied Sciences, University of Cyprus, October 8, 2005 (in greek, available in ppt).
"Towards a safer Internet: The European and Cypriot perspective and reality." Workhop on Safer Internet, Nicosia, Cyprus, September 28, 2005 (available in pdf).
"VITP: A Vehicular Information Transfer Protocol." Second ACM International Workshop on Vehicular Ad Hoc Networks (VANET 2005). In conjunction with ACM MobiCom, pages 30-39, September 2nd, 2005, Germany (available in pdf).
"Grid Performance Exploration," Colloquium, Department of Computer Science, University of California, Riverside, CA, USA, June 10, 2005.
"Test driving the Grid," Colloquium, Department of Computer Science, Rutgers University, Piscataway, NJ, USA, May 20, 2005.
"Grid Explorations," Colloquium, Department of Computer Science, University of Cyprus, Nicosia, Cyprus, March 11, 2005 (available in pdf).
"Test driving the Grid," Institute of Computer Science, Foundation of Research and Technology Hellas (FORTH), Herakleion, Greece, October 22, 2004 (available in pdf).
"GridBench: A Tool for Benchmarking Grid Resources", Grid Performance Workshop, University College London, London, UK, May 13, 2004. (available in ppt).
"Intermediary Systems: A Survey," Third Anwire Workshop on Adaptable Service Provision, Ecole Nationale Superieure des Telecommunications (ENST), 18th November 2003, Paris (available in ppt).
“Searching the Grid,” Institute of Informatics and Telecommunications, National Center for Scientific Research “Demokritos”, Athens, Greece, June 3, 2003, and International Workshop on Engineering the Grid, Seconda Universita di Napoli, San Leucio, Naples, Italy, May 30,2003 (available in ppt).
"Grid Computing: Overview and Applications," Seminar on New Technologies for Naval Applications, 5th Pelagic Meeting, Naval Academy of Greece - Hellenic Navy, Spetses, Greece, May 5, 2003.
"Search Engines for the Grid: A Research Agenda," 1st European AcrossGrids Conference, Santiago de Compostella, Spain, February 2003.
"Performance Evaluation of Mobile-Agent Middleware ," Performance
Analysis and Distributed Computing Dagstuhl Seminar No. 02341,
Schloss Dagstuhl, Germany August 20, 2002 (available in
"WebRACE: A Distributed WWW Retrieval, Annotation & Caching Engine," IBM Research, T.J. Watson Research Center, NY, July 25, 2001 (available in pdf) .
"From Web Servers to Web Services," Workshop on Mobile Services, Intercollege, Limassol Campus, May 9, 2001 (available in pdf , in greek).
"WebRACE: A Distributed WWW Retrieval, Annotation & Caching Engine," International Workshop on Performance-oriented Application Development for Distributed Architectures (PADDA), Munich, May 15, 2000 (available in pdf )
"Cyprus and eEurope," Open University Series of lectures, Skali Aglantjias, Nicosia, Cyprus, January 31st, 2001 (in greek, available in pdf ).
"A Performance Analysis Framework for Mobile-Agent Systems," Workshop on Infrastructure for Scalable, Multi-Agent Systems, Autonomous Agents 2000 Conference, Barcelona, Spain, June 3, 2000, and Central Institute for Applied Mathematics (ZAM), Juelich, Germany, March 14, 2000 (available in pdf ).
"Evaluating IST Proposals," IST Information Day, Institute of Neurology and Genetics, Nicosia, Cyprus, May 31, 2000.
"Utility and Quality of Service Models for the Dissemination of
WWW Resources," Workshop on Web Measurement, Metrics and Mathematical
Models, 9th International WWW Conference, Amsterdam, The Netherlands,
May 15, 2000 (available in pdf ).