Determining the optimal size of the supply base has haunted managers for years. A small supply base gives rise to the risk of supply disruption, whereas a large supply base increases the fixed cost. In this paper, we consider the risks of supply disruption due to occurrence of super, semi-super,...

This chapter introduces four research methods that are not covered in the previous chapters. They are (1) non-parametric statistics, (2) interpretive structural modeling, (3) analytic hierarchy process, and (4) data envelopment analysis. The methods are discussed with examples. The discussion,...