Kaïs AMMARI is full professor of mathematics at the University of Monastir (Tunisia). He got his PhD from Ecole Polytechnique in Palaiseau (France). His domain of expertise includes analysis of partial differential equations, control theory and operator semi-group theory. He has held visiting professorships at various universities in France, Italy, and Spain. He has developed a number of international cooperative projects. He is the director of the research Lab of Analysis and Control of PDE (ACEDP lab).Chaker JAMMAZI is a Professor at the University of Tunis El-Manar, Tunisia. He did his PhD, in Applied Mathematics, from the Ecole Nationale d’Ingénieurs de Tunis, University of Tunis El-Manar (January 2008). In April 2014, he obtained the Habilitation à Diriger des Recherches (HDR), in Applied Mathematics, from the Ecole Polytechnique de Tunisie (EPT) - Carthage University. His main research interests include nonlinear mathematical control theory in finite and infinite dimensional. Faouzi TRIKI is an associate Professor at Grenoble Alpes University, France. He did his PhD at École Polytechnique, France (2002), after getting a Master's degree from Sorbonne University, France. He does research on mathematical modeling in optics, inverse problems focusing on multiwave, and  scattering-based imaging.