type: 4_or_108subjectTerm: III. ENGINEERING AND TECHNOLOGY_or_II. NATURAL SCIENCES AND AGRICULTURAL SCIENCES_or_V. LAW AND SOCIAL SCIENCES_or_III. ������������������ ������������������ ������ ��������������������__elauthor: Koumpis, Alexandros_or_Tsitsifli, Stavroula_or_Stathis, Dimitrios_or_Paraskevas, Michail_or_Kanakoudis, Vasilis