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Logistics

What have satellite scheduling, the selected traveling salesperson (orienteering) problem, and make-to-order manufacturing in common?

First, these problems can all be modeled as a single-machine scheduling problem with release times, deadlines, time/sequence dependent setup times, and rejection, which is strongly NP-hard. Second, most instances are solved either best or fastest with one of our new algorithms! Some instances have been solved by us to optimality …

Scientific advisor at Dutch Railways (NS)

Last week I started at the Dutch Railways in Bob Huisman’s group on Maintenance Research and Development as a scientific advisor, for one day a week. My aim is to support and further increase the exchange of knowledge and experience between Dutch Railways and Delft University of Technology. I aim …

Solving Road Congestion Problems with Algorithms?

State-of-the-art in-car navigation systems contribute to preventing road congestion, because avoiding traffic jams helps dissolving it. Currently, the more advanced systems already are using both historic travel times as well as recently observed travel times to estimate future travel times for road segments, and base their route navigation advice upon …

Funding awarded for project with Eindhoven in program Big Data: real time ICT for logistics

Geert-Jan van Houtum, Onno Boxma, Uzay Kaymak, Alp Akcay, Rik Eshuis, Willem van Jaarsveld, Stella Kapodistria, and Yingqan Zhang from Eindhoven University and Sicco Verwer and me from Delft have been awarded a grant for our research proposal on Real-time data-driven maintenance logistics with support from Philips, Fokker, and Nederlandse Spoorwegen. Sicco and I will work with a …

Scheduling on Board a Navy Vessel

On board of a navy vessel there many activities need to be performed by the crew. When assigning these activities to crew members certain constraints have to be taken into account, such as that crew members can only perform one activity at a time, some activities can be carried out only by a subset …