Complex sentence: He has fan clubs both in Japan and Turkey and gives both academic and public lectures all over the world while he is also appointed as visiting professor at universities such as University of Naples, Montreal University, Tokyo Science University and Tsukuba University.
Split into simpler sentences: He has fan clubs both in Japan and Turkey and gives both academic and public lectures all over the world. He is also appointed as visiting professor at universities such as University of Naples, Montreal University, Tokyo Science University and Tsukuba University.