1. Department of Electrical and Electronic Engineering Educators; School of Pedagogical and Technological Education (ASPETE); Heraklion Attikis 141 21 Athens Greece
2. Department of Environmental and Natural Resources Management; University of Patras; 2 Seferi St. 30 100 Agrinio Greece
3. Department of Chemical Engineering; University of Patras; 265 04 Patras Greece