Em. Prof. of the National Technical University of Athens (GR); member of the Academy of Sciences of Torino (IT); doctor honoris causa of Liege University (BΕ), S.E. University of Nanjing (CN), Democritus University of Thrace (GR), Aristotle University of Thessaloniki (GR), University of Cyprus (CY), the National & Kapodistrian University of Athens (GR), and the Panteion Univeristy (GR); has served as expert and consultant of United Nations and of the European Union, as well as president of international scientific societies. He is honorary president of the Hellenic Society of Philosophy, and president of the Society for the Study of Ancient Greek Technology. He is the author of over 440 papers and over 50 books in several languages. In September 2013, he received the International Award of Merit in Structural Engineering (IABSE, Zurich).