List of Articles Operations Research Open Access Article Abstract Page Full-Text 1 - A survey of meta-heuristic methods for optimization problems Mehdi Fazli Open Access Article Abstract Page Full-Text 2 - Future Study of Decision Models in Business Using Scenario Planning Approach Mohammad Hassan Maleki Mohammad Reza Fathi Open Access Article Abstract Page Full-Text 3 - An optimization model for management of empty containers in distribution network of a logistics company under uncertainty Ahmad Hosseini Tobias Sahlin Open Access Article Abstract Page Full-Text 4 - A single-vendor and a single-buyer integrated inventory model with ordering cost reduction dependent on lead time M. Vijayashree R. Uthayakumar