1. `Workshop on Applied Bayesian Methods in Econometrics and Forecasting' at Indian Statistical Institute, Bangalore in January, 2000.
2. `Workshop on Statistics with Deficient Data' at Munich University, Germany in July, 2000.
3. `Workshop on Combinatorics and Optimization Techniques in Statistics' at Allahabad University, Allahabad in December 2002.
1. Institute of Statistics, Ludwig Maximilian University, Munich, Germany in 1999.
2. Chinese University of Hong Kong, Hong Kong in 1999.
3. Indian Statistical Institute, Calcutta, India in 1999.
4. School of Mathematics and Statistics, Carleton University, Canada in 2002.
5. Department of Statistics, Carnegie Mellon University, U.S.A. in 2002.
6. Department of Statistics, University of Pittsburgh, U.S.A. in 2002.
7. Institute of Statistics, Ludwig Maximilian University, Munich, Germany in 2002.
8. Institute of Statistical Science, Academia Sinica, Taipei, Taiwan in 2002.
9. Indian Institute of Technology, Kharagpur, India in 2004.
10. University of Dortmund, Dortmund, Germany in 2004.
11. Institute of Statistical Science, Academia Sinica, Taipei, Taiwan in 2004.
12. Department of Statistics, National Cheng-chi University, Taipei, Taiwan in 2004.
13. Department of Mathematics, National Kaohsiung Normal University, Kaohsiung, Taiwan in 2004.
14. Department of Applied Mathematics, National Sun Yat-sen University, Kaohsiung, Taiwan in 2004.
15. Department of Statistics, University of Woolangong, Woolangong, Australia in 2005.
16. Institute of Statistics, Ludwig Maximilian University, Munich, Germany in 2005.
17. Institute of Mathematics, University of Augsburg, Augsburg, Germany in 2005.
18. Allahabad Agricultural Institute, Allahabad, India in 2005.
19. Deutsches Zentrum f�r Luft- und Raumfahrt e.V. (DLR), Institute of Space Simulation, K�ln, Germany in 2006.
20. College of Graduates, University of Dortmund, Dortmund, Germany in 2006.
21. Department of Mathematics and Computer Science, University of Kassel, Kassel, Germany in 2006.
1. "Predictions for a Composite Target in Linear Regression Model" at the Annual Conference of the Indian Society of Agricultural Statistics, at Tirupati, in December, 1993.
2. "Predictions in Linear Regression Models With Measurement Errors", at seminar on Quantitative Analysis of Economic Inequality and Poverty, at Institute of Social and Economic Change, Bangalore, in February, 1994.
3. "Estimation of Bias and Mean Squared Error of an Improved Estimator of Normal Mean" at the Annual Conference of the Indian Society of Agricultural Statistics, at Trichur, in December, 1994.
4. "Effect of Departure from Normality on the Consistent Estimation of Unreplicated Ultrastructural Model", at the annual conference of the Indian Econometric Society, at Pune in May, 1995.
5. Performance of Stein-rule Procedure for Simultaneous Prediction of Actual and Average Values of Study Variable in linear Regression Model" at the 50th session of International Statistical Institute at Beijing, China in August, 1995.
6. "Properties of a Consistent Estimation Procedure in Ultrastructural Model when Reliability Ratio is Known", at the National Conference on "Statistical Inference in Life Testing and Reliability Using Apriori Information" at Banaras Hindu University, Varanasi, in September, 1995.
7. "Ratio Method of Estimation in the Presence of Measurement Errors" at the Annual Conference of the Indian Society of Agricultural Statistics at New Delhi in 1996.
8. "On the Choice of Direction for Minimization of Residuals in Ultrastructural Model" at the International Conferenc on Stochastic and Numerical Modelling and Applications, Utkal University, Bhubaneswar in January, 1997.
9. "Pitman Closeness Comparison of Least Squares and Stein-rule Estimators in Linear Regression Models with Non-normal Disturbances" at the International Conference on Combinatorics and Related Areas, Banaras Hindu University, Varanasi in December, 1997.
10. "Improving the Estimation of Parameters in Measurement Error Models Through Stein-rule Procedure" at the XVIII annual conference of Indian Society for Probability and Statistics and National Seminar on Probability and Analysis, Sambalpur University, Sambalpur in January, 1998.
11. "Prediction in Restricted Regression Models" at the IV International Symposium on Optimization and Statistics, Aligarh Muslim University, Aligarh in December 1998.
12. "Synthesizing the Classical and Inverse Methods in Linear Calibration" at the 86th session of Indian Science Congress Association at Chennai in January, 1999.
13. "Estimation of Regression Coefficients Subject to Exact Linear Restrictions when some observations are Missing and Balanced Loss Function is used", at Workshop on Statistics with Deficient Data, Munich University, Germany.
14. "Comparison of Ratio and Product Methods of Estimation in Survey Sampling under Several Criteria" at National conference on Statistical Inference and Reliability, Panjab University, Chandigarh in November, 2000.
15. "Surprizing Effects of a Trended Regressor on the Efficiency Properties of the Least Squares and Stein-rule Estimation of Regression Coefficients'', at the 53rd session of International Statistical Institute at Seoul, Korea in August 2001.
16. "On the usefulness of knowledge of error variances in the consistent estimation of an unreplicated ultrastructural model" at The 2002 Taipei International Statistical Symposium and Bernoulli Society EAPR Conference held at Institute of Statistical Science, Academia Sinica, Taipei, Taiwan in July, 2002.
17. "Prediction In Restricted Regression Models" at the International Conference on Statistics, Combinatorics and Related Areas, Allahabad University, Allahabad in December 2002.
18. "Synthesizing the Classical and Inverse Methods In Linear Calibration" at the 54th Session of International Stataistical Institute at Berlin, Germany in August 2003.
19. "Consistent Estimation of Coefficients in Measurement Error Models with Replicated Observations" at the Seminar on Multivariate Analysis and its Applications at Calcutta Univesity, Kolkata in March 2004.
20. "On the Regression Method of Estimation of Population Mean from Incomplete Data through Imputation" at the 55th Session of International Statistical Institute at Sydney, Australia in April 2005.
21. "On the Estimation of Linear Ultrastructural Model when Error Variances are known" at the Fourth International Workshop on Total Least Squares and Errors-in-Variables Modeling held at Katholieke University, Leuven, Belgium in 2006.
22. "Parametric Estimation in Measurement Error Models" at the Third Autumn Symposium of the Research Training Group ''Statistical Modelling'' held at University of Dortmund, Germany in November 2006.