0 Sérgio Guerreiro, INESC-ID, Instituto Superior Técnico, Universidade de Lisboa, Portugal Pedro Sousa, INESC-ID, Instituto Superior Técnico, Universidade de Lisboa, Portugal David Aveiro, University of Madeira and Madeira Interactive Technologies Institute, Portugal Giancarlo Guizzardi, Free University of Bozen-Bolzano, Italy Robert Pergl, Czech Technical University in Prague, Czech Republic Henderik A. Proper, Luxembourg Institute of Science and Technology , Luxembourg