issue 4 publication date 2014-12-01

• Multi-objective optimization in WEDM of D3 tool steel using integrated approach of Taguchi method & Grey relational analysis
• Economic design of x¯ control charts considering process shift distributions
• TOPSIS approach to linear fractional bi-level MODM problem based on fuzzy goal programming
• A modified NSGA-II solution for a new multi-objective hub maximal covering problem under uncertain shipments
• Comparative analysis of profit between three dissimilar repairable redundant systems using supporting external device for operation
• A new adaptive exponential smoothing method for non-stationary time series with level shifts
• Prioritization of factors impacting on performance of power looms using AHP
• Economic design of Hotelling’s T2 control chart on the presence of fixed sampling rate and exponentially assignable causes