We study various models for the one-dimensional multi-stage facility location problems with transient agents, where a agent arrives in some stage and stays number of consecutive stages. In problems, we need to serve each one their stages by determining at stage. first model, assume there is no cost moving across focus on optimal algorithms minimize both social objective, defined as total distan...

A circuit of a multi-phase active power filter based on multi-stage inverter architecture was introduced. The paper is focused on building the MATLAB / Simulink model of an AC power supply system including a single-phase active power filter with a two-stage inverter. Each stage of the filter uses the pulsewidth modulation (PWM) method. The results confirmed high efficiency of such a compensatin...