Peer review declaration

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: All paper submitted into registration portal. The process started with sending abstract to the portal, reviewing scope of article conducted by organizers. Presenters who’s abstract accepted are invited to present their paper on the conference. They have to send the full paper before August 31, 2020. All papers are sent to reviewers thought the portal. • Number of submissions received: 60 • Number of submissions sent for review: 60 • Number of submissions accepted: 49 • Acceptance Rate (Number of Submissions Accepted / Number of Submissions Received X 100): 81 • Average number of reviews per paper: 2 • Total number of reviewers involved: 10 • Any additional info on review process: • Contact person for queries: • Dr. Dony Permana, M.Si • Universitas Negeri Padang • donypermana@fmipa.unp.ac