task graph scheduling is a multi-objective optimization and np-hard problem. in this paper a new algorithm on homogeneous multiprocessors systems is proposed. basically, scheduling algorithms are targeted to balance the two parameters of time and energy consumption. these two parameters are up to a certain limit in contrast with each other and improvement of one causes reduction in the other on...

seistan was one of the important ancient urban centres in south eastern persia. the ruins of the city show the prosperity and fertility of this city to the extent that a british civil officer considered it as the ancient london of asia. this article attempts to describe the enormous latent wealth of this ancient city which made it important for strategic, political and commercial reasons. due t...

we model a real-world case problem as a price competition model between two leader-follower supply chains that each of them consists of one manufacturer and one retailer. t he manufacturer produces partially differentiated products and sells to market through his retailer. the retailer sells the products of manufacturer to market by adding some values to the product and gains margin as a fracti...