Free sample articles newly available from International Journal of Operational Research

The following sample articles from the International Journal of Operational Research are now available here for free:

• A modern two-stage stochastic programming portfolio model for an oil refinery with financial risk management
• Economic design of moving average control chart for non-normally distributed data: a comparative study
• Heuristic rules for tie-breaking in the implementation of the NEH heuristic for permutation flow-shop scheduling
• The permutation flowshop scheduling problem with exact time lags to minimise the total earliness and tardiness
• Two-warehouse inventory model for non-instantaneous deteriorating items with partial backlogging and permissible delay in payments under inflation
• An integrated approach of TOPSIS and response surface methodology for optimising the micro WEDM parameters
• Optional services in a non-Markovian queue