List of Articles objective problem Open Access Article Abstract Page Full-Text 1 - Fuzzy multi-objective assembly line balancing problem: Fuzzy mathematical programming approach A. Mahmoodirad S. Niroomand m. sanei Open Access Article Abstract Page Full-Text 2 - Evaluation of Bi-objective Scheduling Problems by FDH, Distance and Triangle Methods S.M Mousavi Open Access Article Abstract Page Full-Text 3 - A hybrid solution approach for a multi-objective closed-loop logistics network under uncertainty Mehrdad Mehrbod Nan Tu Lixin Miao Open Access Article Abstract Page Full-Text 4 - A meta-heuristic approach supported by NSGA-II for the design and plan of supply chain networks considering new product development Zahra Alizadeh Afrouzy Mohammad Mahdi Paydar Seyed Hadi Nasseri Iraj Mahdavi Open Access Article Abstract Page Full-Text 5 - Multi-objective optimization of discrete time–cost tradeoff problem in project networks using non-dominated sorting genetic algorithm Mohammadreza Shahriari