Kroon, L.G.

train problem model number railway station timetable solution stock train units constraint passenger section system result research instance process example schedule planning delay machine route paper circulation kroon approach algorithm scheduling figure function network track class capacity operation matrix departure objective composition arrival management stock circulation order train unit variable value table driver netherland integer shunt disruption graph event train t series train series shift service transportation minute optimization column shunting decision cyclic ns reizigers rotterdam connection factorization infrastructure platform maintenance heuristic disturbance carriage companion depot