Proceedings: Accepted and presented papers in ICECT 2021 will be published in the IOP Conference Proceedings-Journal of Physics: Conference Series (JCPS), which will be indexed by Ei Compendex and Scopus. Conference Chair:Konstantinos E. Psannis, University of Macedonia, GreeceYutaka Ishibashi, Nagoya Institute of Technology, Japan (IEICE Fellow)Program Chairs:Sotirios Goudos, Aristotle University of Thessaloniki, GreecePanagiotis Sarigiannidis, University of Western MacedonIa, GreeceLocal Chair:George Kokkonis, University of Western Macedonia, Greece Contact:Secretary: Celine XiEmail: This email address is being protected from spambots. You need JavaScript enabled to view it.