type: 109_or_110subjectTerm: I. MATHEMATICS AND COMPUTER SCIENCE_or_II. NATURAL SCIENCES AND AGRICULTURAL SCIENCESauthor: Koumpis, Alexandros_or_Karampas, Theofanis_or_Kombiadou, Katerina_or_Mavromatidis, Ilias_or_Katsafados, Petros_or_Krestenitis, Ioannis