The contribution presents a heuristic for the three-dimensional strip-packing problem (3D-SPP) with rectangular shaped pieces (boxes). The considered 3D-SPP can be formulated as follows: for a given set of boxes and a given longitudinal open container, determine a feasible arrangement of all...

The paper presents a tabu search algorithm (TSA) for the Timetabling problem at German primary schools (GPS-TTP). The GPS-TTP represents a special variant of School Time-tabling with a specific mix of constraints. At first the GPS-TTP is modelled as a binary optimization problem. The model is...