Visiting Lecturer — University of Waterloo, Canada, 16 April - 16 June 1998.
Visiting Lecturer — University of Waterloo, Canada, 15 July - 10 September, 1999.
Visiting Lecturer — University of Waterloo, Canada, 01 May - 25 June, 2001.
Visiting Scientist — University of Birmingham, England, 8 May - 7 June, 2002.
Visiting Scientist — Technical University Dresden, Germany, January 2003- April 2004.
Visiting Professor — University of Waterloo, Canada, 4 May - 29 June 2006.
Visiting Professor — University of Waterloo, Canada, 05 June - 12 July 2009.
Visiting Professor — Michigan State University, 16 August 2015- 8 May 2016.
Visiting Professor — University of Waterloo, Canada, 01-24 June, 2018.
Visiting Professor — University of Waterloo, Canada, 12 September - 29 November 2019.
Visiting Professor — University of Helsinki, Finland, 13 - 27, August, 2022.
Visiting Professor — University of Waterloo, Canada, 21 June - 19 July 2023.
Conferences / Work Shops Participated Abroad
1999 — Attended a Paper presentation session of the Royal Statistical Society in London, October 1999.
2000 — Attended the 36th Gregynog Statistical Conference in Wales, England, April 2000.
2000 — Presented a paper on Negatively Dependent Binary Chaos for Communication Modeling in the International Conference of the Royal Statistical Society, University of Reading, England, 25-29, September 2000.
2001 — Participated in a Workshop on Classification at University of Waterloo, Canada. 20, May, 2001.
2003 — Presented a paper on stochastic and chaotic shot noise processes in the Seminar on Statistical Aspects of Non-linear systems at Technical University Dresden, Germany, 25-28, September 2003.
2003 — Participated in a Workshop on Netzwerke in der Gebaudeautomation – Modellierung, Voraussage, Planung. Technical University Dresden, Germany, 27, November 2003.
2006 — Attended a One day workshop on Six-Sigma held at the University of Waterloo, Canada on 25.05.2006.
2008 — Presented an Invited talk on Product Autoregressive Time Series Models at an International Workshop on Applied Probability, University de Technologie, Compiegne, France, July 7 – 10, 2008.
2009 — Presented a paper on “Applications of product models in financial time series” at the 57th session of the International Statistical Institute held at Durban, South Africa, 16 – 22, August 2009.
2017 — Resource person at an ISBIS sponsoredWorkshop on Time series analysis in Data Science at University of Peradeniya, Sri Lanka, 20 -22, December 2017.
Conferences / Work Shops Participated in India
1987 — Attended a National Seminar on Statistical Inference, Pune, June 1987.
1990 — Presented a paper on counting processes generated by some Markov sequences at 77th session of Indian Science Congress, Cochin, February 1990.
1993 — Attended the Annual conference of Indian Soc. for Prob. & Stat, Pune , Dec. 1993.
1995 — Attended a Workshop on Stochastic Calculus at Mysore, March 1995.
1995 — Presented a paper on Bivariate alpha-Laplace autoregressive processes at the Annual conference of Indian Soc. for Prob. and Stat, Hyderabad, Dec. 1995.
1996 — Presented a paper on Estimation for a Bivariate geometric distribution, International Conference on Quality Improvement through Stat. Methods, Cochin Dec. 1996.
1997 — Presented a paper on Estimation for the semi-Pareto process at a National Seminar on Statistical Inference, Dharwad, November 1997.
1998 — Presented a paper on Estimation for some non-Gaussian time series at a National Conference on Stochastic Modeling, Mangalore , February 1998.
1998 — Presented a paper on Estimation for minification processes, International Conference on Stochastic Processes and their Applications, Madras, January 1998.
2000 — Presented a paper on Positive stable Autoregressive process in the International Conference on Extreme Values and Order Statistics, Mysore, 18-20, December, 2000.
2002 — Presented a paper on Gamma Stochastic Volatility models at a National Conference held at University of Pune, August 2002.
2003 — Presented a paper on Applications of chaotic time series in communication modeling at the International conference on Statistics in Industry and Business held at Cochin, January 2003.
2005 — Presented a paper on ‘Estimation of positive stable stochastic volatility models via empirical characteristic function’ at the 25th Conference of Indian Society for Probability and Statistics and Annual Meeting of Indian Bayesian Society held during 28 – 30 December 2005, Bangalore University.
2007 — Attended workshop on Financial Mathematics, January 6, 2007, Cochin.
2007 — Attended workshop on Women and Health Literacy, Department of Statistics, Cochin University of Science and Technology, Cochin.
2007 — Presented a paper on “Some models for stochastic volatility” at the International Conference on Statistical Science, OR &IT, XXVIth Annual Conference of ISPS, held during January 7-9, 2007 at Thirupathi.
2012 — Participated in two day InternationalWorkshop on Quantitative Methods for Environmental Data Analysis with Statistical Package R, AIMSCS, Hyderabad, 1-2, January 2012.
