Abstract: For a connected graph G and a subset S of its vertices, the Steiner tree problem consists of finding a minimum-size connected subgraph containing S. The Steiner distance of S is the size of ...

The time optimal navigation problem is then formulated for general polygonal environments. Based on this formulation, the paper constructs a speed graph for the environment which consists of time ...

Average speed cameras are now operational along a 51.5 mile stretch of the A90 between Dundee and Stonehaven, replacing the existing fixed and mobile camera enforcement previously on the route. The ...