List of Articles Open Access Article Abstract Page Full-Text 1 - A multi-objective model for closed-loop supply chain optimization and efficient supplier selection in a competitive environment considering quantity discount policy Mustafa Jahangoshai Rezaee Samuel Yousefi Jamileh Hayati Open Access Article Abstract Page Full-Text 2 - Development of system decision support tools for behavioral trends monitoring of machinery maintenance in a competitive environment Michael Kanisuru Adeyeri Khumbulani Mpofu Open Access Article Abstract Page Full-Text 3 - Fault tolerant system with imperfect coverage, reboot and server vacation Madhu Jain Rakesh Kumar Meena Open Access Article Abstract Page Full-Text 4 - A Taguchi approach on optimal process control parameters for HDPE pipe extrusion process G. V. S. S . Sharma R. Umamaheswara Rao P. Srinivasa Rao Open Access Article Abstract Page Full-Text 5 - The multi-objective decision making methods based on MULTIMOORA and MOOSRA for the laptop selection problem Esra Aytac¸ Adalı Ayşegül Tuş Işık Open Access Article Abstract Page Full-Text 6 - A robust multi-objective global supplier selection model under currency fluctuation and price discount Atousa Zarindast Seyed Mohamad Seyed Hosseini Mir Saman Pishvaee Open Access Article Abstract Page Full-Text 7 - Interval MULTIMOORA method with target values of attributes based on interval distance and preference degree: biomaterials selection Arian Hafezalkotob Ashkan Hafezalkotob Open Access Article Abstract Page Full-Text 8 - An improved genetic algorithm for multidimensional optimization of precedence-constrained production planning and scheduling Son Duy Dao Kazem Abhary Romeo Marian Open Access Article Abstract Page Full-Text 9 - Techniques for cash management in scheduling manufacturing operations Mehdy Morady Gohareh Naser Shams Gharneh Reza Ghasemy Yaghin Open Access Article Abstract Page Full-Text 10 - Residuals based process capability indices for two-stage processes Erfaneh Nikzad Amirhossein Amiri Babak Abbasi