To enable broad access to education and generous use of educational resources, Graz University of Technology (TU Graz) also relies on Open Educational Resources (OER). This article describes the technological developments and processes that enable teachers at TU Graz to use their own learning management system (LMS)

We show that the so-called motorcycle graph of a planar polygon can be constructed by a randomized incremental algorithm that is simple and experimentally fast. Various test data are given, and a clustering method for speeding up the construction is proposed.

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