Different kinds of conflicts are increasing day by day in the world. The increase of disputes and mutual conflicts cause countries continue to devote high amounts of resources to the defence industry for national security. In order to obtain the maximum benefit from defence spending, the defence...

We consider an important class of research and development (R&D) investments in public and private entities that require selection from a large number of proposals such that: (1) the potential monetary value of the proposals is not a first-order factor in the selection; and (2) the investments...