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: The submission system used the EasyChair (easychair.org). It included abstract submission, full paper submission, and the final revised papers. • Number of submissions received: 134 • Number of submissions sent for review: 110 • Number of submissions accepted: 107 • Acceptance Rate (Number of Submissions Accepted / Number of Submissions Received X 100): 79.86% • Average number of reviews per paper: 1 • Total number of reviewers involved: 14 • Any additional info on review process: The similarity of the papers is less than 25% for published in ICOPIA Proceeding. • Contact person for queries: Name : Nuryani, Ph.D. Affiliation: Physics Department, Sebelas Maret University Email : nuryani@mipa.uns.ac.id