Invited lecture on “Fundamentals of Cloud Computing with Workflow Scheduling Algorithms,” FDP on Latest Trends in Computer Education & Research - 2021”, Amity University, Ranchi, India, 28 July, 2021.

Invited lecture on “Fog for IOT Applications: An Overview and Research Challenges,” FDP on Machine Learning for IoT Applications, NIT Warangal, 7-15 June, 2021

Invited Talk on “Algorithms for Mobile Charging and Data Collection in Wireless Sensor Networks”, in the National Webinar on “Innovative Applications of IoT, Sensor Networks and Machine Learning”, Berhampur University, Odisha, 15 March 2021.

Tutorial Talk on “on Mobile Charging and Data Collection in Wireless Sensor Networks”, in the Pre-Conference Tutorial of the Intl. Conf. ICCIC 2021, Jhansi, India, 7 Feb. 2021.

Invited talk on “Evolutionary Computing Algorithms for Wireless Sensor Networks,” International Conference on Applied Mathematics and Computational Intelligence (ICAMCI-2020), NIT Agartala, 24 December 2020.

Invited lecture on “Meta-Heuristic-Based Workflow Scheduling Algorithms for Cloud Computing,” FDP on Cloud and Fog Computing Platforms for Internet of Things Application at NIT Warangal, 23 December 2020.

Invited lecture on “Fog Computing: Architecture, Applications and Research Challenges, ” FDP on Cloud and Fog Computing Platforms for Internet of Things Application at NIT Warangal, 22 December 2020.

Invited lecture on “An overview of Fog Computing with Applications and Research Challenges”, National Webinar on 'Recent Trends in Computer Science' Ramakrishna Mission Residential College, Narendrapur, West Bengal, 21 December 2020.

Invited lecture on “Machine Learning Algorithms for Wireless Sensor Networks”, National Webinar "Machine Learning and its Applications" Haldia Institute of Technology, West Bengal, 19 November 2020.

Guest lecture (virtual) on “Cloud Computing: Fundamental Concepts and Workflow Scheduling”, Spectrum-Learning Weeks, Exploration & Production Academy, Reliance Industries Limited, 10 October 2020.

Invited talk (virtual) on “Association Analysis : A Rule based Machine Learning Technique”, TEQIP – III Sponsored One Week Online FDP on Recent Advances in Computational Techniques, 19^th – 23^th Sept. 2020, CET, Bhubaneswar, Odisha.

Invited talk (virtual) on “Fog Computing: An Overview, Applications and Research Challenges”, TEQIP – III Sponsored One Week Online FDP on Recent Advances in Computational Techniques, 19^th – 23^th Sept. 2020, CET, Bhubaneswar, Odisha.

Invited talk (virtual) on “Wireless Sensor Networks: Algorithmic Challenges and Solutions”, TEQIP – III Sponsored One Week Online FDP on Emerging Technologies: Theory and Applications on 5^th – 10^th Sept. 2020, VSSUT, Burla, Odisha.

Lecture Series (virtual) on “Fundamentals on Machine Learning and its Applications”, in the On Line FDP, Durgapur Institute of Advanced Technology & Management (DIATM), Durgapur, West Bengal, 3-7 August, 2020.

Keynote address (virtual) on “Evolutionary Computing Techniques for Wireless Sensor Networks,” In FDP on Image Authentication, WSNs and IoT, JIS College of Engineering, Kolkata, 24 June, 2020.

Keynote Speech on "Fog Computing: an Emerging Paradigm" in the Intl. Conference ICADCML-2020, 30-31 January, 2020 at VIT, Vellore, India.

Invited Talk on “Machine Learning and its Applications” , 31 August, 2019 at Asansol Engineering College, India.

Invited Tutorial Talk on "Algorithms for Wireless Sensor Networks: Evolutionary Computing Approach" in the 7^th Intl. conference ICSCC 2019 , 28-30 June 2019, Curtin University, Malaysia.

Expert Lecture on “Cloud computing: an Emerging Technology Paradigm”, in the workshop on Recent Advancement in Engg.-Industry-4.0 Ready, 14 February, 2019 at BIT Mesra, Deoghar Campus.

Invited Talk on "Algorithms for Wireless Sensor Networks: Machine Learning Approaches ", 02 April, 2018 at NIT Kurukshetra, India.

Invited Talk on "Automata Theory, Formal languages and Compiler Design", 21 January, 2018 at BIT Mesra, India.

Invited Talk on "Machine Learning Applications for Wireless Sensor Networks", 12 November, 2017 at VSSUT, Burla, India.

Invited Talk on “EC Algorithms for wireless sensor netwroks”, 10 March, 2017 at Jadavpur University (Salt Lake Campus), India.

Invited Talk in the FDP on "High Performance Computing", 06 February, 2017 at ABES Engineering College, Ghaziabad, India.

Invited Talk in the FDP on “Parallel and Distributed Computing”, 01 February , 2017.at FGIET, Raebarely, India.

Invited Talk on “Introduction to Parallel Computing”, 02-03 May, 2016 at BIT Mesra, India.

General Chair, Third Intl. Conference on Advances in Distributed Computing and Machine Learning (3rd ICADCML) NIT Warangal, 15-16 January 2022

Advisory Comm. Member in the Intl. Conference IEMIS 2022, 23-25 July, 2022 Institute of Engineering & Management, Kolkata India.

Advisory Comm. Member in the Intl. Conference ICCIOT 2018 at Chaibasa Engg. College, West Singhbhum, India

General Chair in Intl. Conference on RAIT-2018, 15-17 March, 2018 at IIT (ISM) Dhanbad, India.

Session Chair in 52nd Annual Convention of Computer Society of India, CSI-2017, 20 January, 2018 at Science City Kolkata, India

Advisory Comm. Member in the Intl. Conference ICIAC 2016, 18-19 March, 2016 at GITAM University Hyderabad, India

Advisory Comm. Member in the Intl. Conference ICCCMT, 22-24 September, 2016 at SPMIT Allahabad (U.P.), India

Advisory Comm. Member in the Intl. Conference ICCI 2015, 10-11 December, 2015 at BIT Mesra, India

Advisory Comm. Member in Intl. Conference IEEE-UPCON 2015, 4-6 December, 2015 at IIIT Allahabad, India

Advisory Comm. Member in Intl. Conference ICCIDM-2015 at V.S.S.U.T, Burla,Odisha, India

Guest of honor in the Intl. Conference ICCS 2016, 21-22 January, 2016 at Burdwan University, India

General Chair in Intl. Conference on RAIT-2012, 15-17 March, 2012 at ISM Dhanbad, India

General Co-Chair in the National Seminar on Recent Advances on Information Technology (RAIT-2009), 6-7 February, 2009 at ISM Dhanbad, India

Convener in the Workshop on Parallel & Distributed Computing (WPDC-08), 28 March, 2008 at ISM Dhanbad, India

Convener of the National Seminar on Recent Advances on Information Technology (RAIT- 2007), 26-27 February, 2007 at ISM Dhanbad, India

Technical Review Committee Member, 9 ^th Intl. Conf., PReMI’21, ISI Kolkata, Dec. 15-18, 2021.

Intl. Conference ICCI 2018, 10-11 December, 2018 at BIT Mesra, India

Special Issue on A2ICS 2017 for Journal of Intelligent & Fuzzy Systems (IOS Press).

Intl. Conference MIKE 2017, 13-15 December, 2017 at IDRBT Hyderabad, India

Intl. Conference IACD 2017, 12-15 November, 2017

Intl. Conference NGCT 2017, 30-31 October, 2017 at UPES Dehradun, India

Intl. Conference IC4S 2017, 11-12 October, 2017 at Thailand.

Intl. Conference RACCCS 2017, 2-3 September, 2017 at ACERC Ajmer, India

Intl. Conference IoT4TD 2017, 1-2 April, 2017 at KSV Gandhinagar, India

1st Intl. Conference CICBA 2017, 24-25 March, 2017 at CBS Kolkata.

3rd International Symposium NextGenCIT, 2017, 22-23 March,2017 at Cambridge University Ranchi, India

8th International Conference GRAPH-HOC 2016, 23- 24 December, 2016, Sydney, Australia.

Intl. Conference ICRACCCS 2016, 25-26 November, 2016 at JRNRVU Udaipur, India

Intl. Conference IC4S 2017, 12-13 August, 2016 at ACERC Ajmer, India

Intl. Conference INDIA-2015, University of Kalyani, India

Intl. Conference ICECCE 2014, 17-18 November, 2014 at ACE Hosur.

Intl. Conference ICCCT-2011, MNNIT, Allahabad, India

Intl. Conference ICCCT-2010, MNNIT, Allahabad, India

Intl. Conference EAIT-2011, Kolkata, India

At Advanced Computing & Microelectronics Unit (ACMU), Indian Statistical Institute, Kolkata, 2003