Complex sentence: He moved to the Department of Industrial and Systems Engineering at Virginia Tech in 1993, to the Department of Mechanical and Industrial Engineering at the University of Illinois at Urbana-Champaign in 1999.
Split into simpler sentences: He moved to the Department of Industrial and Systems Engineering at Virginia Tech in 1993. He then moved to the Department of Mechanical and Industrial Engineering the University of Illinois at Urbana-Champaign in 1999.