Editorial Board Maria Dimasi Professor e-mail: mdimasi@bscc.duth.gr Tel. +3025310-39433 Eleftherios Charatsidis Assistant Professor e-mail: echarats@bscc.duth.gr Tel.: +30-25310-39448 Emmanuel Sergis                Professor e-mail: msergis@otenet.gr Tel.: +30-25310-39417 Panagiotis Krimpas Associate Professor e-mail: pkrimpas@bscc.duth.gr Tel. +30-25310-39481