Mobile Ad Hoc Networks (MANETs) offer quick and easy network deployment in situations where it is not possible otherwise and they can be used to provide mobile users with a temporary infrastructure to use services in the absence of fixed infrastructure. Nodes in MANETs are free to move and organize themselves in an arbitrary fashion. The challenging task in such dynamic environments is how to i...

In a large dynamic network, data can be copied anywhere to make it fault tolerant and easy accessed but there must be an efficient protocol to manage the replicas and make sure the data is consistent and high in availability with a low communication cost. In this paper, we introduced a new protocol, named Diagonal Replication in Mesh (DRM) for data replica control protocol for a large dynamic n...

data envelopment analysis (dea) is a managerial powerful tool for assess the performance of decision making units (dmus). nowadays, multi-objective dea models are an attractive technique for evaluation quantity and quality aspects of performance analysis. but these models are in static. in this paper, we want to present a proposed fuzzy dynamic multi-objective dea model in which data are changi...

The paper explores schemes for dynamic replication and migration of web objects in the context of an Internet hosting service. It describes a replica placement algorithm for deciding the location and number of replicas of an object as well as request distribution schemes for choosing among currently available replicas. We compare two classes of request distribution algorithms – namely feedback ...

The paper explores schemes for dynamic replication and migration of web objects in the context of an Internet hosting service. It describes a replica placement algorithm for deciding the location and number of replicas of an object as well as request distribution schemes for choosing among currently available replicas. We compare two classes of request distribution algorithms – namely feedback ...