Presented a paper in the International Conference and Instructional Workshop on Industrial Mathematics, December 2 to December 9, 2002 at the Indian Institute of Technology Bombay, India. The title of the paper was “Exact Controllability of the Linear Parabolic Differential Equations”.

Delivered a talk in the International Conference on Partial Differential Equations, Optimal Design and Numerics, August 28 to September 9, 2005 at The Benasque International Center for Science, Benasque, Huesca, Spain. The title of the talk was "On Approximation Theorems for Controllability of Nonlinear Parabolic Problems".

Presented a paper in the International Conference on Topics in Functional and Numerical Analysis, December 7 to December 9, 2005 at the Indian Institute of Technology Bombay, India. The tile of the paper was “Optimal Control Problems Governed by Parabolic Integro-Differential Equations”.

Lectures on Matlab and Mathematica Software in the Summer School on Mathematics Education through Instructional Workshop held at the Department of mathematics, DSB Campus, Kumaun University, Nanital, India during June 7 to June 16, 2006.

Lectures on Matlab Software in the Second Summer School on Mathematics Education through Instructional Workshop for undergraduate and postgraduate students held at G. B. Pant College of Engineering, Pauri, Uttarakhand, India during June 4 to June 16, 2007.

Lectures on Numerical Computation by Using Matlab in the National Workshop on Soft Computing (NWSC-08) held at Gandhigram Rural University, Tamil Nadu, India during January 21 to January 27, 2008.

Guest lecture on Matlab with Programming in PSNA College of Engineering and Technology, Dindigul, Tamil Nadu, India on January 24, 2008.

Lectures on Numerical Analysis with Matlab in the Third Summer School on Mathematics Education through Instructional Workshop for undergraduate and postgraduate students held at Birla Institute of Applied Sciences, Bhimtal, Uttarakhand, India during June 16 to June 28, 2008.

Lectures on Mathematica and its application in the National Workshop on Mathematical Softwares and Applications held at Dr. Babasaheb Ambedkar Marathwada University, Aurangabad, India during March 23 to March 27, 2010.

Lectures on Linear Programming and its Application with Matlab in the National Workshop on Optimization-Theory and Practice held at SSJ Campus Almora of Kumaun University, Uttarakhand, India during November 15 to November 19, 2010.

Lectures on Numerical Computation by Using Matlab in the workshop on Scientific Computing: Theory and Practices held at Faculty of Engineering and Technology, Gurukula Kangri Vishwavidyalaya Haridwar, Uttarakhand, India during October 8 to October 13, 2012.

Lectures on Computation of Steering Controls in Matlab in the workshop on Mathematical Theory of Control and Numerics held at Department of Mathematics, Indian Institute of Space Science and Technology, Thiruvananthapuram, Kerla, India during November 21 to November 30, 2012.

Lectures on Mathematica in the Introductory Workshop on Mathematica held at Department of Mathematics, BITS Pilani KK Birla Goa Campus, Goa, India during July 24 to July 25, 2013.

Lectures on different computational method in the advanced level workshop on “Computational Methods for Control Problems” during March 16 to March 21, 2015 held at Department of Mathematics, IIST Trivandrum and Mar Ivanios College, Trivandrum.

Delivered lecture series on “Numerical Methods for Solving Integral Equations” in the advanced level Workshop on Integral Equations—Solvability Analysis and Application which was held at Department of Mathematics, Jaypee University of Information Technology, Waknaghat, Solan (H.P.) during October 19 to October 25, 2015.

Delivered lecture series on “Mathematics using Matlab” under the training program "Making Mathematics Easy for students" organized by Department of Applied Science, National Institute of Technical Teachers" Training and Research (NITTTR), (Under Ministry of Human Resource Development, Govt. of India), Ext. center Goa during October 26 to October 30, 2015.

Delivered an invited talk in International Conference on “Current Trend in PDEs: Theory and Computations” held at Department of Mathematics, South Asian University, New Delhi, India during December 28 to December 30, 2015. The tile of the talk was “Approximation of the Optimal Control Problem Governed by Parabolic Integro--Differential Equations”. Also chaired one paper presentation session.

Presented a paper (with R.B. Sonawane) in the International Conference on “Computational Modeling & Simulation (ICCMS-2017)” held at University of Colombo, Sri Lanka during May 17 to May 19, 2017. The title of the paper was “Optimal control of the velocity term in a Kirchhoff plate equation with multiplicative control”.

Delivered an invited talk in International Conference on “Advances in Computational Mathematics” held at University of Dhaka, Bangladesh during May 27 to May 28, 2017. The tile of the talk was “Approximate Controllability of a Class of Parabolic Differential Equations with Memory Term”.

Delivered an invited talk in International Conference on “Recent Advances in PDEs: Theory, Computations and Applications” held at IIT Bombay during June 8 to June 10, 2017. The tile of the talk was “Optimal control of the velocity term in plate equation with multiplicative control”. Also chaired one paper presentation session.

Delivered an invited talk in International Conference on Nonlinear Differential Equations-Theory, Modeling and Computations held at SRM University, Kattankulathur, Chennai during December 8 to December 9, 2017. The tile of the talk was A Computational Study of Orthogonal Spline Collocation Methods for fourth-order Boundary Value Problems. Also co-chaired one of the paper presentation session.

Delivered a talk on Controllability of a Class of Parabolic Differential Equations with Memory Term in the International & 14th Biennial Conference of Indian Society of Industrial and Applied Mathematics (ISIAM) which was held at Guru Nanak Dev University, Amritsar during February 2 to February 4, 2018.

Delivered an invited talk in National Conference on Advances in Differential Equations-2018 which was held on September 29, 2018 at Department of Mathematics, Vivekanand College, Kolhapur. The tile of the talk was Optimal Control Problem: A Use of Pontryagin Minimum Principle.

Delivered lectures and held tutorial sessions on Ordinary Differential Equations in the Winter School on Differential Equations which was held at Department of Mathematics, Savitribai Phule Pune University,Puneduring December 03 to December 14, 2018.

Delivered an invited talk in 4th International Conference on Recent Developments in Theory, Computation & Application of Differential Equations held at Department of Mathematics, South Asian University, New Delhi, India during January 21 to January 23, 2019. The title of the talk was A mixed finite element method for elliptic optimal control problems using a three-field formulation.

Delivered an invited talk in International Conference on Differential Equations and Control Problems: Theory, Modelling and Computation (ICDECP19) held at the School of Basic Sciences, Indian Institute of Technology, Mandi, Himachal Predesh, India during June 17 to June 19, 2019. The Title of the talk was A Fourth-Order Orthogonal Spline Collocation Method to Fourth Order Boundary Value Problems.

Delivered a talk in the 9th International congress on Industrial and Applied Mathematics (ICIAM-2019) held at Campus de Blasco Ibáñez of the Universitat de València, València, Spain from July 15 to July 19, 2019. Title of the talk was A Mixed Finite Element Method for Elliptic Optimal Control Problems Based on Biorthogonal Systems.

Delivered a scientific cum popular talk on an online platform through Google meet at the Center for Data Science, Siksha ‘O’ Anusandhan, Deemed to be University, Bhubaneswar, on February 19, 2022. The title of the talk was Optimal Control Problem: A Use of Pontryagin Minimum Principle.

Delivered an invited talk at the International Conference on Computational Partial Differential Equations and Applications (ICCPDEA-2022) held at BML Munjal University, Gurgaon, India, from September 6 to September 8, 2022. The title of the talk was Virtual Element Methods for Optimal Control Problems Involving Elliptic Partial Differential Equations.

Delivered a symposium talk at the 37th Annual Conference of Ramanujan Mathematical Society held at the Department of Mathematics, Sri Sivasubramaniya Nadar College of Engineering, Chennai, India, from December 06 to December 08, 2022. The title of the talk was Virtual Element Methods for Optimal Control Problems Governed by Diffusion Problems.