L. Zeinalzadeh - Department of Mathematics, Karaj Branch, Islamic Azad University, Karaj, ‎Iran‎.
R. Kazemi Matin - Department of Mathematics, Karaj Branch, Islamic Azad University, Karaj, ‎Iran‎.
AR. Amirteimoori - Department of Mathematics, Rasht Branch, Islamic Azad University, Rasht, ‎Iran‎.

The current study investigates performance in two-stage production systems through the measurement of capacity utilization (CU). In short-run, the degree of capacity utilization depends on the ability of decision making units to utilize fixed production factors. To develop this indicator in two-stage production processes, a modified SBM network DEA model is proposed. A numerical example is also presented to point out the applicability and effectiveness of current model.

Network Data Envelopment Analysis, Capacity Utilization, Intermediate product, Two-stage production system