issue 13 publication date 2013-09-02

• Scheduling of a flexible flow shop with multiprocessor task by a hybrid approach based on genetic and imperialist competitive algorithms
• A cost-oriented model for multi-manned assembly line balancing problem
• A New Algorithm for the Discrete Shortest Path Problem in a Network Based on Ideal Fuzzy Sets
• A New Fuzzy Method for Assessing Six Sigma Measures
• Optimization of Plastic Injection Molding Process by Combination of Artificial Neural Network and Genetic Algorithm
• A Multi-level Capacitated Lot-sizing Problem with Safety Stock Deficit and Production Manners: A Revised Simulated Annealing
• The project portfolio selection and scheduling problem: mathematical model and algorithms