(1) Visited Imperial College, London, U.K. from 4-6 July 2012 for paper presentation in International Conference of Applied and Engineering Mathematics (ICAEM), World Congress of Enginnering (WCE-2012) organized by International Association of Engineers (IAENG)
(2) Visited University of Malaya, Kuala-Lumpur, MALAYSIA from 12-14 August 2011 for paper presentation in International Conference on Innovative Thoughts-Education, Management, Arts, Science, Linguistics (Teaching and Learning)