one of the main principles of the passive defense is the principle of site selection. in this paper, we propose a multiple objective nonlinear programming model that considers the principle of the site selection in terms of two qualitative and quantitative aspects. the purpose of the proposed model is selection of the place of facilities of a system in which not only it observes the dispersion ...

Most of the infrastructures planning problems like facility location, allocation of resources, and path planning are based on the network topology created from maps with spatial and non-spatial attributes. The problem is where do you locate new facilities? In this example, the facility can be on any node i.e. at any road junction. It is also possible to locate a facility in the middle of the ro...

Transportation networks are increasingly facing new security threats due to the vulnerabilities of cyber-physical components that support their operation. In this article, we aim to understand how the network operator (defender) should prioritize the investment in securing a set of facilities in order to limit the impact of a strategic adversary (attacker) who can target a facility to increase ...

The blood supply chain as a part of healthcare systems play a substantial role in health improvement within societies, and blood supply for daily needs and especially in disasters is the challenges requiring more attention. This paper presents a fuzzy-stochastic mixed integer linear programming model to design blood supply chain network for disaster relief. To deal with the uncertainty in model...

Today’s, the transportation facilities such as terminals, street, bridge, etc, represent the major investment in highway network. Every year tremendous resources should be invested to maintain these facilities. Among them, the Bridge Management System (B.M.S.) has been necessitated by large imbalance between extensive bridge repair and maintenance needs and limited available budget. So the main...

Preventive healthcare aims at reducing the likelihood and severity of potentially life-threatening illnesses by protection and early detection. In this paper, a bi-objective mathematical model is proposed to design a network of preventive healthcare facilities so as to minimize total travel and waiting time as well as establishment and staffing cost. Moreover, each facility acts as M/M/1 queuin...

We consider a continuous facility location problem in which our objective is to minimize the weighted sum of three costs: fixed costs from installing the facilities, backbone network costs incurred from connecting the facilities to each other, and transportation costs incurred from providing services from the facilities to the service region. We first analyze the limiting behavior of this model...

Facility Location Problems have always been studied with the assumption that the environment in the network is static and does not change over time. In practice, however, the environment is usually dynamic and we must consider the facility location in a global view. In this paper, we impose the following additional constraints on input facilities: the total number of facilities to be placed is ...

In many telecommunication networks a given set of client nodes must be served by different sets of facilities, providing different services and having different capabilities, which must be located and dimensioned in the design phase. Network topology must be designed as well, by assigning clients to facilities and facilities to higher level entities, when necessary. We tackle a particular locat...