Jurnal Optimasi Sistem Industri translated Journal on Optimization of System at Industries (JOSI) is a peer-reviewed and open access scholarly periodical. JOSI publishes research papers, technical papers, conceptual papers, and case study reports. Article manuscripts are published after a thorough peer-review process. JOSI’s first edition was in 2001. The journal publication is maintained by the Industrial Engineering Department at Universitas Andalas, Padang, West Sumatra, Indonesia as the publisher. It addresses recent trends on optimizations made in soft systems aspects of industrial operations and engineering. Discussions on hard systems are welcome if it optimizes the soft systems aspects as stated in the focuses and scopes. JOSI works closely with The Institution of Engineers Indonesia (Persatuan Insinyur Indonesia) and BKSTI (Badan Kerjasama Penyelenggara Pendidikan Tinggi Teknik Industri), which provides editorial members, peer reviewers, and authors, both are professional institutions related to JOSI's aims and scopes. Accepted papers are in English only. We welcome other language articles, subject to translation fee before publication acceptance.