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. Mr, Dr Youssef Chahir is Master of conferences (Associate professor) in University of Caen, France. He is member of Research Group in Data processing

. Dr, He is currently a head of Computer science department of the Faculty of Science of the engineer of the Mentouri university of Constantine and president of association sciences and development of the university. He is a member of the vision team & computer graphics of the research laboratory LIRE of the computer sciences department