Panagiotis Karampelas holds a Ph.D. in Electronic Engineering from University of Kent at Canterbury, UK and an MSc in “High Performance Algorithms” from the Department of Informatics, University of Athens, Greece. He has worked a lot of years as a researcher and as a faculty member in various research and educational institutions. His areas of interest include Information Visualization, Data Mining, Social Network Analysis, Artificial Neural Networks, Power Transmission and Distribution Systems. He has published a number of articles in his major areas of interests in international journals, conferences and books. Currently, he is a Lecturer at the Hellenic Air Force Academy, Greece. Lambros Ekonomou received a Bachelor of Engineering (Hons) in Electrical Engineering and Electronics in 1997 and a Master of Science in Advanced Control in 1998 from University of Manchester Institute of Science and Technology (U.M.I.S.T.) in United Kingdom. In 2006 he graduated with a Ph.D. in High Voltage Engineering from the National Technical University of Athens (N.T.U.A.) in Greece and with a BA in Economics from University of Piraeus in Greece. His research interests include power systems, transmission and distribution lines, distributed generation, lightning and artificial neural networks. He has worked as a faculty member in various institutions such as City University London, ASPETE - School of Pedagogical and Technological Education, Hellenic Military Academy, Hellenic American University and Hellenic Naval Academy. He has also worked as senior electrical engineer in various companies including Hellenic Public Power Corporation S.A., Athens-Piraeus Electric Railways S.A. and Hellenic Aerospace Industry S.A.