Complex sentence: In 2006-07, he was a visiting senior research fellow at the Asia Research Institute, National University of Singapore, while he served as a distinguished visiting professor at Universiti Utara Malaysia in September 2011.
Split into simpler sentences: In 2006-07, he was a visiting senior research fellow at the Asia Research Institute, National University of Singapore. He served as a distinguished visiting professor at Universiti Utara Malaysia in September 2011.