In practices, not only production but inspection processes are often not perfect, thereby generating defects and inspection errors. Previous imperfect-quality inventory studies, however, have mostly focused on developing cost-minimizing models that do not consider imperfect inspection processes...

This study examines an imperfect production and inspection system with customer return and defective disposal. We develop an optimal lot sizing model with production and inspection quality investment, incorporating all the quality costs. We find the optimal lot size, rework frequency, defective...

The present research investigates the effect of inventory performance on profitability. The objective is to find empirical evidence for the theory that operational excellence in inventory management improves profitability in the long run. To this end, the authors examine industry level...