A novel optimal single machine replacement policy using a single as well as a two-stage decision making process is proposed based on the quality of items produced. In a stage of this policy, if the number of defective items in a sample of produced items is more than an upper threshold, the machine is replaced. However, the machine is not replaced if the number of defective items is less than ...

In an increasingly complex world of interrelated problems many governments have tried to modernise their institutional structures and the ways in which they go about making policy. In the UK and elsewhere this has been most apparent in the growing emphasis given to evidence-based policy making in contrast to faith-based approaches and the conviction politics of earlier periods. Much of the deba...

Scholars and practitioners agree that dealing with complex policy problems poses a challenge of integration. In other words, we need to understand how integrate new into existing policies create linkages between systems. Up now, the scientific literature has focused on integration predominantly from design perspective. This special issue puts focus political aspects process. The papers examine ...