IP flow mobility enables selected traffic to offload among various access networks. However, until now, only flow mobility schemes in the centralized architecture were considered. In this paper, we propose a flow mobility-enabled scheme based on the distributed mobility management networks to address the scalability issue and single point failure problems which the centralized approaches suffer...

in this paper, the competition between two supply chains and their elements is studied. each chain consisted of a manufacturer and a distributor and the two chains compete in a market with single type of customer sensitive to price and delivery time. therefore, this is a two-supply chain game and during the competition between two supply chains, elements of each supply chain (manufacturer and/o...

Many proposed protocols for replicated databases consider centralized control of each transaction so that given a transaction, some site will monitor the remote data access and transaction commit. We consider the ap preach of broadcasting transactions to remote sites and handling these transactions in their complete form at each site. We consider data of two types: shared-private data and publi...

Cost efficiency measures the cost of resource by output production. While conventional cost efficiency models set targets separately for each DMU, There are cases where the Central decision making is seeking the above targets, and at the same tries to obtain the target of Min cost efficiency for the total consumption. in this paper we consider that there is a centralized decision maker (DM). In...

We create an environment in which congestion forces agents to match inefficiently early. We then introduce one of two centralized clearinghouse mechanisms. One of these has been successfully used to halt this kind of unraveling in a number of labor markets, while the other has failed. When it is costly for Žrms andworkers to bemismatched comparedwith the costs of matching early, the experimenta...

Most current schemes for multicast routing assume that multicast routers participate both in forwarding mul-ticast packets and in control algorithms for routing, resource reservation, and group management. By separating data and control ow, and by centralizing control in distinct control elements, we have designed a simple and scalable approach to IP multicast that we call Centralized Multicast...