Visiting Professor, Sophia University, Japan, May 2013 - August 2013 (STEC Fellowship)

Visiting Professor, University of Glasgow, UK, May 2012 - June 2012 (UKIERI Indo-UK Staff Exchange Fellowship)

Visited University of Rennes, France and University of Glasgow, UK for presenting papers in International conferences in July 2008 and August 2011 respectively

Visiting Professor, Sophia University, Japan, May 2009 - August 2009 (STEC Fellowship)

Visiting Researcher, Vienna University of Technology, Austria, June 2007 - July 2007 (TEQIP Fellowship)

  Post-Doctoral Scientist, Pohang University of Science and             Technology, South Korea, Nov 2002 - Nov 2003