Complex sentence: Sörlin was Associate Director for the Center for History of Science in the Royal Swedish Academy of Sciences 1988-1990, and the founding director of the Swedish Institute for Studies in Education and Research, SISTER (2000-2003).
Split into simpler sentences: Sörlin was Associate Director for the Center for History of Science in the Royal Swedish Academy of Sciences 1988-1990. He was the founding director of the Swedish Institute for Studies in Education and Research, SISTER (2000-2003).