issue 4 publication date 2016-12-01

• Armentum: a hybrid direct search optimization methodology
• Erratum to: Armentum: a hybrid direct search optimization methodology
• Nash equilibrium strategy in the deregulated power industry and comparing its lost welfare with Iran wholesale electricity market
• Optimization of two-stage production/inventory systems under order base stock policy with advance demand information
• Reliability optimization problems with multiple constraints under fuzziness
• Solving a bi-objective mathematical model for location-routing problem with time windows in multi-echelon reverse logistics using metaheuristic procedure
• A multi-objective genetic algorithm for a mixed-model assembly U-line balancing type-I problem considering human-related issues, training, and learning
• Finding stability regions for preserving efficiency classification of variable returns to scale technology in data envelopment analysis
• Optimizing the preventive maintenance scheduling by genetic algorithm based on cost and reliability in National Iranian Drilling Company
• A firefly algorithm for solving competitive location-design problem: a case study
• A green vehicle routing problem with customer satisfaction criteria