Spyros SioutasSpryos Sioutas obtained his diploma and Phd degree from the department of Computer Engineering and Informatics of the University of Patras. His current research interests include Spatio-Temporal Databases, Data Structures, Algorithms and I/O Complexiy, Computational Geometry, Peer-to-Peer Networks, knowledge management and advanced information systems. He has published about 60 articles in international conferences, Books, Journals and Technical Reports. Main Research Interests include spatio-temporal and multimedia databases, efficient I/O algorithms and data structures, computational geometry and computer graphics, P2P computing, information systems and Web services, and educational software. Read More Read Less