Awards
Recognitions 1. Speaker, in the International Congress of Mathematicians, August 1927, 2010, Hyderabad India, Title: "On Ramsey (2K2,Pn)minimal graphs." 2. Indonesian representative, in General Assembly, International Mathematical Union (IMU), August 1617, 2010, Bangalore India. 3. Plenary speaker, in the International Workshop on Optimal Networks Topologies IWONT2010, Barcelona Spanyol, 912 Juni 2010, Title: ”The existence of almost Moore digraphs with higher degree and diameter”. 4. Invited speaker, in the IndoMS International Conference on Mathematics and its application (IICMA2009), UGM Yogyakarta, October 12 – 13, 2009, Judul makalah: ”On (Super) EdgeMagic Deficiency of Graphs”. 5. Invited speaker, in the 33rd Australasian Conference on Combinatorial Mathematics and Combinatorial Computing (33ACCMCC), December 711, 2009, Newcastle, Australia, Title: ”On The Existence of Almost Moore Digraphs”. 6. Invited speaker, in the 4th International Conference on Research and Education in Mathematics (ICREM 4), Kuala Lumpur, Malaysia, October 21  23, 2009, Title: ”On the Existence of Almost Moore (Di)graphs”. 7. Invited speaker, in the Asian Mathematical Conference, June 2226, 2009 Kuala Lumpur Malaysia, Title: ”Some progress on Ramsey numbers and Ramseyminimal graphs”. 8. Invited speaker, in the 4th International Conference on 21st Century Mathematics 2009, Lahore Pakistan, March 48, 2009, Title: ”On some Ramseyminimal graphs”. 9. Invited speaker, in the 3rd International Conference on Mathematics and Statistics (ICoMS3), IPB Bogor, Indonesia, 56 August 2008, Title: Some graph Ramsey numbers and Ramseyminimal graphs”. 10. Invited speaker, in the International Joint Symposium on Computational Science, Kanazawa University, Japan, 37 March, 2008, Title: ”Ramsey Numbers, EdgeMagic Total Labelings and Secret Sharing Schemes”. 11. Invited speaker, in the International Conference on Mathematics and Applications ICMAMU 2007, Bangkok Thailand, 1517 August 2007, Title: ”Ramsey numbers of complete bipartite graphs”. 12. Keynote speaker, in the 3rd International Conference on 21st Century Mathematics 2007, Lahore Pakistan, March 47, 2007, Title: ”On the existence of almost Moore digraphs”. 13. Invited speaker, in Workshop/Conference on Algebra and Graph Theory, Lahore Pakistan, March 1322, 2006, Title: ”Total labeling of graphs”. 14. Invited speaker, in Asian Mathematical Conference 2005, hosted by South East Asian Mathematics Society (SEAMS), National University of Singapore, Singapore, July 2023, 2005, Title: ”On the structure of almost Moore digraphs containing selfrepeats” .
