All papers published in this volume of Journal of Physics: Conference Series have been peer reviewed through processes administered by the Editors. Reviews were conducted by expert referees to the professional and scientific standards expected of a proceedings journal published by IOP Publishing. ● Type of peer review: Single-blind ● Conference submission management system: IDAS Conference management System ● Number of submissions received: 215 ● Number of submissions sent for review: 215 ● Number of submissions accepted: 143 ● Acceptance Rate (Number of Submissions Accepted/Number of Submissions Received X 100): 68% ● Average number of reviews per paper: 2 ● Total number of reviewers involved: 450 ● Any additional info on review process: Contact person for queries: Dimitrios Vlachos Associate Professor University of Peloponnese dvlachos@uop.gr