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

26.  Machine Learning + X Seminar Series, Division of Applied Mathematics, Brown University, USA, 21 April 2023, Invited Seminar Lecture. 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 Speaker. https://sites.google.com/bcamath.org/dsabns2023/home

24. 2022 Conference in Nonlinear Science and Complexity, Thessaloniki, Greece, September 26-29, 2022. Plenary Speaker. 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, Invited 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. 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 Speaker. 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 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 Speaker. http://www.dsabns2020.maths.unitn.it/

15. Dynamics Days Europe 2019, Rostock, September 2-7, 2019, Plenary 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, Invited Speaker. http://www2.stat-athens.aueb.gr/~School/previous_schools.html

12. Open Health Institute, Aix-Marseille Université- Timone, France, April 7, 2017, Plenary 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 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 Speaker/Teaching (graduate and Ph.D. students).

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

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