This analysis compares the cost efficiency of Islamic and conventional insurers operating in eight countries. We analyze data collected from 32 insurers using stochastic frontier analysis, data envelope analysis and a partial frontier approach with order-alpha free disposal hull. We compare the...

In this paper, we consider the single machine scheduling problem with quadratic earliness and tardiness costs, and no machine idle time. We propose a genetic approach based on a random key alphabet, and present several algorithms based on this approach. These versions differ on the generation of...