University of Sannio, Italy;Middlesex University, U.K.;Portland State University, U.S.A.;University of Maryland, U.S.A.;The Open University, U.K.;Wayne State University, U.S.A.;Durham University, U.K.;Durham University, U.K.;Durham University, U.K.;Imperial College, U.K.;University of Southern California, U.S.A.;Imperial College, U.K.;Heriot-Watt University, U.K.;Edinburgh Napier University, U.K.;Hertfordshire University, U.K.;The University of Texas at Austin, U.S.A.