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: Double-blind Both the reviewer and author identities of Semadik 2020 are concealed from the reviewers, and vice versa, throughout the review process. To facilitate this, authors need to ensure that their manuscripts are prepared in a way that does not give away their identity. • Conference submission management system: an institutional open journal system consisting, committee information, submission system, about, contact details (www.semadik.ump.ac.id) • Number of submissions received: 76 • Number of submissions sent for review: 66 • Number of submissions accepted: 50 • Acceptance Rate (Number of Submissions Accepted/Number of Submissions Received X 100): 65.79% • Average number of reviews per paper: 4 • Total number of reviewers involved: 16 • Any additional info on review process: • Contact person for queries: Reni Untarti, Universitas Muhammadiyah Purwokerto, email: reniuntarti@ump.ac.id