30. 21st Summer Meeting in Risk Finance and Stochastics, 9 - 13 September 2024, Athens University of Economic and Business, Hybrid,  Plenary/Keynote  Speaker: Mind the gap between deep neural networks and numerical analysis tasks.

29. 30th Summer School and Conference on Dynamic Systems & Complexity ,  Calandra University Camping, Halkidiki, 28/8/2024 – 6/9/2024. Plenary /Keynote  Speaker: An introduction to scientific machine learning for the solution of the forward and inverse problems in dynamical systems. Challenges and Perspectives.

28. International Conferemce "Scientific Machine Learning, emerging topics", Trieste,  SISSA, Italy, 18-21 June 2024, Plenary/Keynote Speaker: Solving the inverse problem in complex systems via machine learning: challenges and perspectives

27. 2nd Conference of the Italian Chapter of the Complex Systems Society: Risk and Complexity, Naples, Italy, 9-11 October 2023, Plenary/Keynote Speaker.

26.  Machine Learning + X Seminar Series, Division of Applied Mathematics, Brown University, USA, 21 April 2023, Invited Seminar Lecture. From Physics-Informed to Physics-Free Control of Complex Systems via Machine Learning.  https://www.brown.edu/research/projects/crunch/machine-learning-x-seminars/machine-learning-x-seminars-2023. You can find the video of the presentation here: https://youtu.be/W-gda3cW028

25. 14th Conference, Dynamical Systems in Biology and Natural Sciences, February 3-8, 2023, Bilbao, Spain, Plenary'Keynote Speaker. Numerical Solution of the forward and inverse problems in complex dynamical modelling and analysis with manifold learning and physics-informed random projection neural networks  https://sites.google.com/bcamath.org/dsabns2023/home

24. 2022 Conference in Nonlinear Science and Complexity, Thessaloniki, Greece, September 26-29, 2022. Plenary/Keynote Speaker. Solving the Inverse and Forward Problems in Dynamical Systems using Physics Informed Random Projection Neural Networks  https://nsc2022.physics.auth.gr/?page_id=109.

23. 19th e-Summer School in Risk Finance and Stochastics, Athens University of Economic and Business, September 28-30, 2022, Plenary'Keynote Speaker.http://www2.stat-athens.aueb.gr/~School/previous_schools.html

22. International Conference on Dynamical Systems and Numerical Methods, New Delhi, India, May 20-21, 2022. Invited Speaker. https://www.jmi.ac.in/upload/EventDetail/icdsnm22_Brochure.pdf.

21. Artificial Intelligence and Mathematics, February 22, 2022, Invited Seminar Lecture. Pgysics Informed Random Projection Neural Networks for the Numerical Solution of the Forward and Inverse Problems in Differential Equations.  https://www.iac.rm.cnr.it/iacsite/?page=list_events_new&cod=812

20. 13th Conference, Dynamical Systems in Biology and Natural Sciences, February 8-11, 2022, Plenary/Keynote Speaker. Numerical Solution of Partial Differential Equations and Stiff problems of ODEs with Physics Informed Random Projection Networks and Extreme Learning Machines  http://www.bcamath.org/en/other/dsabns2022

19.  Machine Learning + X Seminar Series, Division of Applied Mathematics, Brown University, USA, 17 December 2021, Invited Seminar Lecture. https://www.brown.edu/research/projects/crunch/machine-learning-x-seminars

18. Institut für Mathematik, Institut für Mathematik, University of Rostock, Winter's Semester Mathematisches Institutskolloquium, October 13, 2021, Invited Seminar Lecture. https://www.mathematik.uni-rostock.de/veranstaltungen/aktuelle-veranstaltungen/veranstaltungsplan/

17. 12th Virtual Conference, Dynamical Systems in Biology and Natural Sciences, February 2-5, 2021, Plenary/Keynote Speaker. https://wp.bcamath.org/dsabns21/?page_id=318

16. 11th Conference, Dynamical Systems in Biology and Natural Sciences, Trento, February 3-7, 2020, Plenary\Keynote Speaker. http://www.dsabns2020.maths.unitn.it/

15. Dynamics Days Europe 2019, Rostock, September 2-7, 2019, Plenary'Keynote Speaker. https://dyndays.uni-rostock.de/

14. Shechtman – Suresh Convocation & Honorary Symposium, Aristotle University of Thessaloniki, Nov 30 – Dec 3, 2018. Invited Speaker.

13. 15th Summer  School in Stochastic Finance, Athens University of Economic and Business, July 9-13, 2018, Plenary/Keynote Speaker. http://www2.stat-athens.aueb.gr/~School/previous_schools.html

12. Open Health Institute, Aix-Marseille Université- Timone, France, April 7, 2017, Plenary/Keynote Speaker.https://www.youtube.com/watch?v=Ihoj5N9Z4EM

11. 8th Workshop Dynamical Systems Applied to Biology and Natural Sciences | DSABNS, 31 Jan-3 Feb. 2017, Universidade de Évora, Portugal. Plenary'Keynote Speaker.http://dsabns2017.rd.ciencias.ulisboa.pt/

10.  Institute for Advanced Study, Technishe Universität München, Germany, December, 2015. Visiting Professor/Research Scholar.

9. Institute of High Performance Computing and Networking, CNR, Naples, Italy, November, 2014. Invited Lecture.

8. Institute of Combustion, National Research Council  (CNR), Naples, Italy, October-November, 2014. Visiting Professor.

7. Dept. of Chemical and Biological Engineering, Program in Applied and Computational Mathematics, Princeton University, USA, January-March, 2012. Visiting Professor (Research and Teaching) .

6. Dept. of Engineering Mathematics, University of Bristol, UK,  March, 2012. Invited Lecture.

5. International Summer School on Multiscale Material Mechanics and Engineering Sciences, 21-30 August, Thessaloniki, Greece, 2010. Plenary/Keynote Speaker (and teaching) (graduate and Ph.D. students).

4. 2nd Toyota Workshop on Nonlinear Complex Systems, Baden, Austria, September 23-27, 2007.  Plenary\Keynote Speaker.

3. 1st Toyota Workshop on Decision Making and Uncertainty in Nonlinear Complex Systems, Helsingoer, Denmark, November 20-23, 2006. Plenary\Keynote Speaker.

2. Dept. of Chemical Engineering, Princeton University, USA, February, 2006. Visiting Professor.

1. Oxford-Princeton Workshop on Multiscale Problems, Mathematical Institute, University of Oxford, UK, May 10-12, 2002. Invited Speaker.