Dr Gregoris Mentzas is Professor of Management Information Systems at the School of Electrical and Computer Engineering of the National Technical University of Athens (NTUA) and Director of the Information Management Unit (IMU), a multidisciplinary research unit at the University. During 2006-2009 he served as member of the Board of Directors of the Institute of Communication and Computer Systems of NTUA, and since 2010 he serves as Director of the Division of Industrial Electric Devices and Decision Systems at the School. His area of expertise is information technology management and his research concerns knowledge management, semantic web and e-service technologies in e-government and e-business settings. He holds a Diploma Degree in Engineering (1984) and a Ph.D. in Operations Research and Information Systems (1988) both from NTUA. During 1996-1997 he was a Visiting Fellow in the UK, in the area of “Information Management Systems n Business Transformation”. In parallel to this academic work he is an enthusiast black and white amateur photographer, see his work at http://www.gregorismentzas.com.