In this paper, the two-echelon multi-period multi-product location–inventory problem with partial facility closing and reopening is studied. For each product period, plants serve warehouses, which consolidation hubs, service customers independent, normally distributed demands. The schedule of construction, temporary closing, modular capacities facilities, continuous-review inventory control pol...

An extended star is a tree which has only one vertex with degree larger than two. The -center problem in a graph  asks to find a subset  of the vertices of  of cardinality  such that the maximum weighted distances from  to all vertices is minimized. In this paper we consider the -center problem on the unweighted extended stars, and present some properties to find solution.

The paper aims to study a multi-period maximal covering location problem with the configuration of different types facilities, as an extension classical (MCLP). proposed model can have applications such locating disaster relief hospitals, and chain supermarkets. facilities are supposed be comprised various units, called modules. modules sizes transfer between during planning horizon according d...

This work deals with a multi-period capacitated location problem inspired by telecommunication access network planning problems, where demands and costs vary from one period to another. On each concentrator site, several capacitated concentrators can be installed at each period. Similarly, several capacitated modules can be installed at each period between each terminal and concentrator sites. ...

Many transport service providers operate on hub-and-spoke network structures. Major operators may have several dedicated hub facilities that are leased for a time horizon rather than being owned or constructed. For a given discrete planning horizon, service providers must decide on the location of the hub ports (i.e. terminals), the period when the lease contract starts, the period when the exi...

Although current technologies allow simple online banking transactions, it is vital to guarantee access bank branches both for customers and businesses. Banking branch interactions improve trust in institutions everyday situations emergencies. This research addresses the problem of location facilities. A set objective functions related socio-economic variables, geographical coverage bankers pre...