single-phase squirrel cage and three-phase induction electromotors are the most popular electromotors used in industry from long ago. when an induction motor starts with direct connection method, it takes a lot of current from the power supply (several times the nominal current); so, several methods have been devised to start such electromotors. these methods either reduce the voltage of the st...

In this work we consider the hybrid flexible flowline (HFFL) problem with a set of additional constraints that apply in real-world industrial environments. A set of n jobs has to be scheduled on a set of m ordered stages. All jobs are available at time 0, and job preemption is not allowed. Each stage i consists in mi parallel unrelated machines. Jobs might skip stages; we denote the stages visi...