Complex sentence: He was Dean of Asian Studies at the Australian National University (1996--2005), and Basham Professor of Asian History (1924-2013); he is now Emeritus Professor of the Australian National University.
Split into simpler sentences: He was Dean of Asian Studies at the Australian National University (1996--2005), and Basham Professor of Asian History (1924-2013). He is now Emeritus Professor of the Australian National University.