Motivated by telecommunications applications we investigate the minimum spanning tree problem where edge costs are interval numbers. Since minimum spanning trees depend on the realization of the edgeâ€¦ (More)

We investigate the well-known shortest path problem on directed acyclic graphs under arc length uncertainties. We model data uncertainty by treating the arc lengths as interval ranges. In order toâ€¦ (More)

Through observations from real life hub networks, we introduce the multimodal hub location and hub network design problem. We approach the hub location problem from a network design perspective. Inâ€¦ (More)

The hub location problem deals with finding the location of hub facilities and allocating the demand nodes to these hub facilities so as to effectively route the demand between any originâ€“destinationâ€¦ (More)

In this study we introduce the regenerator location problem in flexible optical networks (RLP-FON). With a given traffic demand, RLP-FON tries to solve the regenerator placement, routing, bandwidthâ€¦ (More)

We introduce a practically important and theoretically challenging problem: finding the minimum cost path for plug-in hybrid electric vehicles (PHEVs) in a network with refueling and batteryâ€¦ (More)

The flow refueling location problem (FRLP) locates p stations in order to maximize the flow volume that can be accommodated in a road network respecting the range limitations of the vehicles. Thisâ€¦ (More)