In this paper we obtained an approach to the optimal switching control problem with unknown switching points which it is described in reference [1, 2]. In reference [1], the authors studied the Decomposition of Linear-Quadratic Optimal Control Problems for Two-Steps Systems. In [1], the authors assumed the switching point t1 is fixed in the interval for state equation and boundary of the integr...

This paper presents a new soft-switching solution recommended for three-level neutral-point-clamped inverters. The operation principles of the proposed solution, working stages, selection elements, and control algorithm are comprehensively discussed herein. method inverter main switches is same as that an operating according to hard-switching technique. correctness was confirmed by results diff...

This study investigates patterns of topical migration, specifically interactional dynamics of conceptual drifting and metacognition as counteracting forces, in interactive information retrieval. “Think aloud” sessions of exploratory search conducted by five graduate students were recorded, and the audio recordings were first coded into semistructured notes and then converted into flow graphs fo...