List of Articles Open Access Article Abstract Page Full-Text 1 - A Hybrid Meta-Heuristic Method to Optimize Bi-Objective Single Period Newsboy Problem with Fuzzy Cost and Incremental Discount Ata Allah Taleizadeh Seyed Taghi Akhavan Niaki Open Access Article Abstract Page Full-Text 2 - Using Markov Chain to Analyze Production Lines Systems withLayout Constraints sadegh Abedi morteza mousakhani naser hamidi Open Access Article Abstract Page Full-Text 3 - A New Approach in Job Shop Scheduling: Overlapping Operation parviz Fattahi mohammad Saidi Mehrabad Open Access Article Abstract Page Full-Text 4 - An Iterated Greedy Algorithm for Flexible Flow Lines with SequenceDependent Setup Times to Minimize Total Weighted Completion Time Bahman Naderi mostafa Zandieh Seyed Mohammad Taghi Fatemi Ghomi Open Access Article Abstract Page Full-Text 5 - A Mathematical Model for a Flow Shop Scheduling Problem withFuzzy Processing Times Jafar Razmi Reza Tavakoli moghaddam Mohammad Saffari Open Access Article Abstract Page Full-Text 6 - Propagation Models and Fitting Them for the Boolean Random Sets mojtaba Khazaei Khalil Shafie Open Access Article Abstract Page Full-Text 7 - New Heuristic Algorithms for Solving Single-Vehicle and Multi-VehicleGeneralized Traveling Salesman Problems (GTSP) Ellips Masehian Open Access Article Abstract Page Full-Text 8 - A Memetic Algorithm for Hybrid Flowshops with Flexible MachineAvailability Constraints Fariborz Jolai mostafa zandieh Bahman Naderi