Peer review declaration

All papers published in this volume of IOP Conference Series: Materials Science and Engineering 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 • Describe criteria used by Reviewers when accepting/declining papers. Was there the opportunity to resubmit articles after revisions? : the organizing committee received submitted manuscript and distributed the manuscript to reviewers. Submitted manuscript was assigned to reviewers (minimum one reviewer for each of paper). The papers were reviewed based on the Clarity, Originality, Appropriateness of Material and method, Clarity of Findings. If reviewers accepted the papers or accepted with revision then the committee sent the manuscript back to authors, and the authors could address all comments from the reviewers. The authors sent the final manuscripts back to the committee. Finally, the 2 nd WESTECH editors finalized the final manuscripts by proofreading and checking the format of manuscripts based on IOP Publishing guidelines. • Conference submission management system : easy chair and email • Number of submissions received : 213 manuscripts • Number of submissions sent for review : 206 manuscripts • Number of submissions accepted : 129 manuscripts • Acceptance Rate (Number of Submissions Accepted / Number of Submissions Received X 100) : 129/206 × 100 = 62.62% • Average number of reviews per paper : 3 reviewers. • Total number of reviewers involved : 70 reviewers. • Any additional info on review process : The papers were evaluated based on the technical criteria, quality criteria and presentation criteria. The referees contended detailed their reviews and provided an overall evaluation (accepted, accepted with revision, or rejected). • Contact person for queries (please include: name, affiliation, institutional email address) : Dr. Najamuddin Universitas Negeri Makassar, Indonesia committee.icst@unm.ac.id