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...

This article will contribute to the literature on facility network design by considering the role of competition in the evaluation of capacity investment decisions. As firms have turned to global supply networks to satisfy multiple regional demands, strategic decisions concerning the location and centralization of production must be made to balance a number of important factors: differentials i...

We consider the problem of designing a transportation network to allow the residents of the network to avail service provided by a single facility whose location is predetermined. This problem is known to be NPComplete for general graph. The problem remains NPComplete even when the vertices of the network are required to lie on the boundary of a convex polygon in the Euclidean plane. We present...

This paper studies a strategic supply chain management problem to design robust networks that perform well under both normal conditions and when disruptions strike. We present a mixed-integer programming model whose objective is to minimize the nominal cost (the cost when no disruptions occur) while reducing the disruption risk using the p-robustness criterion (which bounds the cost in disrupti...

For any agency dealing with the design of the water distribution network, an economic design will be an objective. In this research, Central Force Optimization (CFO) and Differential Evolution (DE) algorithm were used to optimize Ismail Abad water Distribution network. Optimization of the network has been evaluated by developing an optimization model based on CFO and DE algorithm in MATLAB and ...

In this paper, we study the distribution network design problem integrating transportation and infinite horizon multiechelon inventory cost function. We consider the trade-off between inventory cost, direct shipment cost, and facility location cost in such a system. The problem is to determine how many warehouses to set up, where to locate them, how to serve the retailers using these warehouses...

Today’s global economy relies heavily on transportation and warehousing to deliver goods. Outsourcing has made the distribution networks complex with several layers of national (import) distribution centers (NDCs) and regional distribution centers (RDCs) between suppliers and retailers. More distribution nodes in the supply chain also means more inventory stockpiles. We present an integrated fa...

In this paper, a supply chain network design problem is explained which contains environmental concerns in arcs and nodes of network. It is assumed that there are some routes such as road, rail and etc. in each pair of nodes. In this model decision variables are choosing facilities to open, environmental investment level in each facility and flow of products between nodes in each route. A multi...

physical design of the emergency department (ed) has an important effect on its role and function. to date, no guidelines have been introduced to set the standards for the construction of eds in iran. in this study we aim to devise an easy-to-use tool based on the available literature and expert opinion for the quick and effective assessment of eds in regards to their physical design. for this ...