in this paper, we develop a capacitated location-covering model considering interval values for demand and service parameters. we also consider flexibility on distance standard for covering demand nodes by the servers. we use the satisfaction degree to represent the constraint of service capacity. the proposed model belongs to the class of mixed integer programming models. our model can be redu...

Sink location is considered as a basic service in geographic routing in wireless sensor networks. Obtaining the location of sink node by source node using an efficient method with low complexity has always been a challenging issue in research. In this paper, a sink location algorithm based on Fano plane is proposed. The research challenge is how to ensure the intersection of two SLQ (Location Q...

  For any organization sound marketing strategy and quality assurance play vital role in the growth of the organization. The price, quality and service, service centers, friendly attitude, Discounts on sales, esthetics, store location and appearance, ease of operations, guarantees and warranties, adopting new ideas, and flexible payments terms were considered to study the perceptions of the res...

The optimal locating of facilities has large effects on economic benefits, providing satisfactory service and levels of customer satisfaction. One of the new topics discussed in location problems is hub location and hub facilities are subject to unpredictable disruptions. This paper proposes a nonlinear integer model for reliable single allocation hub location problem that considers backup hub,...

Location-to-Service Translation (LoST) maps service identifiers and location information to service contact URIs. If a LoST client wants to discover available services for a particular location, it will perform a query to the LoST server. However, the LoST server, in its response, does not provide context information; that is, it does not provide any additional informat...

In this paper, we introduce a new hub-and-spoke structure for service networks based on round-trips as practiced by some transport providers. This problem is variant of Uncapacitated Hub Location Problem wherein the spoke nodes allocated to hub node form (cycles) starting from and ending node. motivated two real-life practices in logistics runaway connections with their associated economies sca...