1. Insights on Efficient Evacuation Planning Issues, Research Seminar, Faculty of Mathematics, University of Magdeburg, Germany, June 27, 2023. 
  2. Results on Emergency Planning Strategies - Overview. Karlsruhe Institute of Technology (KIT), Institute of Operations Research (IOR), Karlsruhe, Germany (scientific meeting, June 15-17, 2023). 
  3. Invited Speaker: OR Models for Congestion Reduction and Emergency Relief: A Collaborative Outcome. International Conference "Interdisciplinary Collaboration for Strengthening Science and Culture". KHK-2022, Organized by Humboldt Club Nepal, October 16-19, 2022. 
  4. Invited Speaker: Innovation and Knowledge Management - Chaotic Transport Optimization for Sustainable Development. 9th National Conference on Science and Technology "Science for Society and Innovation for Prosperity", June 26-28, 2022. 
  5. Patron: Infectious Disease Workshop - Mathematical Modeling for Epidemic Control and Prevention (Jointly organized by Central Department of Mathematics, Nepal Health Research Council - Government of Nepal and San Diego State University, USA; June 21-24, 2022).  
  6. Mathematics in Industry: Challenges and Frontiers, organized by Office of International Affairs (OIA), The Maharaja Sayajirao University, Baroda, India, June 3, 2020. 
  7. Focusing on Mathematical Models &  Analysis of COVID-19 Crisis, organized by The Office of International Affairs, The Maharaja Sayajirao University of Baroda, Vadodara, Gujarat, India and Lappeenranta University of Technology, Finland, June 17-18, 2020.
  8. One World Optimization Seminar (OWOS), organized by Radu Ioan BoČ› (University of Vienna), Shoham Sabach (Technion - Israel Institute of Technology Haifa) and Mathias Staudigl (Maastricht University) (June 1, 2020; June 8, 2020; June 15, 2020; June 22, 2020; June 29, 2020; July 6, 2020; July 13, 2020; July 20, 2020; July 27, 2020; September 7, 2020; September 14, 2020; September 21, 2020; September 28, 2020; November 17, 2020; April 12, 2021; April 19, 2021). 
  9. Annual Meeting of the Alexander von Humboldt Foundation, Berlin, Germany (June 24-25, 2020). 
  10. Web of Science webinar: Supporting COVID-19 research efforts: How to make your search strategies more effective and efficient?  (25 June 2020).
  11. Sudoku: Fun and Serious Mathematics, Organized by the Office of International Affairs, The Maharaja Sayajirao University of Baroda, India and TU Eindhoven, The Netherlands (July 3, 2020). 
  12. Seminar: Operations Research Tools to COVID-19 for Sustainable Future, organized by Operations Research Society of Nepal (ORSN) (July 11, 2020). 
  13. IFORS Global Webinars (ALIO, July 29, 2020; APORS November 30, 2020; EURO, September 30, 2020). 
  14. DAAD-Freundeskreis International Language Caf\'e, Heidelburg, Germany (August 1, 2020).
  15. Invited talk: Network Optimization Techniques for Efficient Emergency Planning. International Webinar on Role of Applied Sciences in Industry and Engineering, organized by Department of Mathematics, Osmania University, Hyderabad, India (May 2-5, 2020).
  16. Session chair: International Webinar on Recent Advances in Pure and Applied Mathematics (RAPAM-2020), August 24-25, 2020. Organized by Department of Mathematics, KURSEONG COLLEGE, DARJEELING. 
  17. Webinar: DAAD (German Academic Exchange Service) Information Session (Tribhuvan University - Study and Research in Germany, August 28, 2020), conducted by DAAD India. 
  18. Webinar: "Merging Dynamics with Data: A mathematical perspective on climate science", organized by Institute of climate change research, The Maharaja Sayajirao University of Baroda, August 29, 31, September 5, 2020.
  19. Invited Webinar talk: Optimization Methods for Efficient Evacuation Planning, International Conference  on Computational Sciences: Modeling, Computing and Soft Computing (CSMCS-2020), organized by National Institute of Technology, Calicut, INDIA, September 10-12, 2020. 
  20. Panelist,  Pre-APORS Conference 2020 OR: Continuing Relevance in Challenging Times, September  23-25, 2020, organized for APORS by the OR Society of the  Philippines (ORSP).
  21. Invited talk: Network Flow Models and Algorithms with Emergency Location and Logistics; IFORS Global Webinar Series, O.R. in the Asia Pacific: Recent Trends and Practices, September 30, 2020.   
  22. Coordinator, 1st Virtual Southeast Asian Study Group Meeting on Industrial Problems, organized/ collaborated by Nepal, Germany, UK, Finland, Thailand, Malaysia, India  and other SAARC countries  (VSEASGMIP2020),  to be hosted by Maharaja Sayajirao University of Baroda, Vadodara, Gujarat, India, October 12-16, 2020. 
  23. DAAD online meet, Connecting Germany and South Asia–Fostering Partnerships in Higher Education, organized by DAAD New Delhi  in association with DAAD Bonn Section P24 – Cooperation Projects and University Grants Commission (UGC), Govt. of India, October 29-30, 2020. 
  24. Participated "DAAD Alumni Programmes", organized by DAAD South Asian Regional Office New Delhi, India, November 6, 2020. 
  25. Invited plenary speaker, MINDANAWAN MATH-STAT International Webcon (Strengthening Mathematical and Statistical Competencies through Convergence in the New Normal),  Quickest Flow Improvement with Network Reconfiguration (organized by MSU-IIT, Mindanao, Central University,  Mathematical Society and Southern Society of Theoretical and Applied Statistics at Philippines, November 4, 11 and 18, 2020). 
  26. Participated at Webex, Transnational Education - Insights into the international discourse and global trends, organized by DAAD regional office New Delhi, November 18, 2020. 
  27. Invited plenary speaker and international advisor: Flow Improvement Strategy using Lane Reversals on Evacuation Network, 2nd International Conference on Emerging Trends in Mathematical Sciences $\& $ Computing (IEMSC-21), February 5th-7th, 2021, Calcutta, India. 
  28. Participated at 2nd International Day of Mathematics (IDM) on March 14, 2021, organized by Bangladesh Mathematical Society (BMS). 
  29. International Alumni event ("DAAD alumni work despite/defies Corona", organized by ADIT: Info talk on - Nepal-German Academic Association (NEGAAS) and DAAD-Alumni Activities, May 28, 2021; June 11, 2021). 
  30. Participated: COVID-19 and Public Health Crises: Updates and Appeals from Nepal" Initiated by "the Commission for Educational Exchange between the United States and Nepal and by the Fulbright Alumni Association of Nepal" (also co-sponsored by Nepal-German Academic Association -NEGAAS), June 8, 2021. 
  31. Participated: International Symposium on Locational Decisions (ISOLDE XV), University of Wuppertal, Germany (5-9 July, 2021). 
  32. Participated: 5th International Conference on Dynamics of Disasters, DOD 2021, Greece (July 16-18, 2021). 
  33. Participated: DAAD web session on “SDG Partnerships 2022-2025”, organized by DAAD Regional Office, New Delhi, August 3, 2021. 
  34. Participated: Ongoing Humboldt New Mobility Conference, organized by Alexander von Humboldt Foundation, September 13-14, 2021.
  35. Participated: 1st International Online Conference on Algorithms (IOCA 2021), September 27 - October 10, 2021. 
  36. Participated: DAAD online meeting - Connecting Germany and South Asia − The Future of Higher Education and Research Cooperation, October 18-22, 2021. 
  37. Coordinator: 2nd Virtual Southeast Asia Study Group Meeting on Industrial problems  (VSEASGMIP2021), Office of International Affairs, Center for  Industrial Mathematics, Department of Applied Mathematics, Mathematics and Statistics
    The Maharaja Sayajirao University of Baroda, Vadodara,Gujarat,India, November 15-19, 2021. 
  38. Coordinator: Virtual Workshop on Managing Disaster Risk - A Way to Sustainability,  organized by Nepal German Academic Association (NEGAAS), November 21-22, 2021. 
  39. Talk: Scientific Models to Optimize Traffic Congestion in Emergency Management, Virtual Workshop on Managing Disaster Risk - A Way to Sustainability,  organized by Nepal German Academic Association (NEGAAS), November 21-22, 2021. 
  40. Invited talk: Flow Models to Optimize Traffic Congestion in Emergency Planning, 22nd International Mathematics Conference, Organized by Bangladesh Mathematical Society (BMS), December 10-11, 2021. 
  41. Member and participation: International Advisory Committee, Third International Conference on EMERGING TRENDS IN MATHEMATICAL SCIENCES \& COMPUTING (IEMSC-22), Department of Basic Science \& Humanities Institute of Engineering \& Management, Kolkata, India (February 4-6, 2022). 
  42. Member and participation: International Advisory Committee, 2nd International Conference on Applied Mathematics in Science and Engineering (AMSE-2022),  Organized by Siksha ‘O’ Anusandhan (Deemed to be University), Bhubaneswar, India (March 24-26, March 2022). 
  43. Panelist: Panel Discussion: Research Opportunities in in Data Science \& Mathematics, Webex, Organized by DAAD, February 17, 2022.