9

Keynote Speech (2024): "Modeling Discrete Systems with GPenSIMDeveloping a Tool for Modeling and Simulation of Discrete Systems using Iterative Approach," UKSim-AMSS 26th International Conference on Mathematical Modelling & Computer Simulation in Artificial Intelligence (UKSim2024) Cambridge University (Emmanuel College), 27 March 2024.

8

Keynote Speech (2024): "Modeling Discrete Systems with GPenSIM," The second International Conference on Algorithms, Microchips, and Network Applications (AMNA 2024), Jinan, China, 09 March 2024.

7

Keynote Speech (2023): "Activity-Oriented Petri Nets for Reducing the Complexities of Discrete Models," UKSim-AMSS 25th International Conference on Modelling & Simulation (UKSim2023), Cambridge University (Emmanuel College), UK, 12-14 April 2023.

6

Keynote Speech (2022): “GPenSIM: A New Tool for Modelling and Performance Analysis of Large Industrial Discrete-Event Systems,” UKSim-AMSS 24th International Conference on Modelling & Simulation (UKSim2022), Cambridge University (Emmanuel College), UK, 13 - 15 April 2022.

5

Keynote Speech (2018): “A Newer Approach for Performance Analysis of Discrete-Event Systems,” at the International Conference on Advances in Big Data, Computing and Data Communication Systems (icABCD 2018), Durban, South Africa, 06 August 2018.

4

Keynote Speech (2014): “Modern Applications of Graph Theory,” at the 2014 International Conference on Graph Algorithms, High Performance Implementations and Applications (ICGHIA), Coimbatore, Tamil Nadu, India, 17-19 December 2014.

3

Keynote Speech (2014): “Modeling Complex Scheduling Problems with a new Petri Net Simulator,” at the International Seminar on Advanced Simulation Techniques and Computational Methods, Sri Krishna College of Technology, Coimbatore, India, 16 December 2014. 

2

Keynote Speech (2010): “On the Making of an Information Society: The Norwegian Approach,” at the IACSIT Chongqing Conferences ICEIT/ICIFI/ICMMT, Chongqing, China, 18 Sep 2010.

1

Keynote Speech (2010): Keynote Speech, “Information Society in Norway”, at the conference Internetki ”e-Entrepreneurship”, Lublin, Poland, 12 May 2010.

28

Invited Talk (2024) "Introducing GPenSIM as a Tool for Modeling and Simulation of Discrete-Event Systems," The 4th International Workshop on Complex System Modeling and Application, Xi'an, China , 19 April 2024

27

Guest Lecture (2024) "Introducing GPenSIM as a Tool for Modeling and Simulation of Discrete-Event Systems," Chongqing Three Gorges University, Wanzhou, China, 14 April 2024

26

Guest Lecture (2024) "Introducing GPenSIM as a Tool for Modeling and Simulation of Discrete-Event Systems," School of Mechano-Electronic Engineering, Xidian University, Xi'an, China, 21 March 2024

25

Guest Lecture (2023) "GPenSIM: A New Tool for Modelling and Analysis of Large Industrial Discrete Systems," QTCNN, Qingdao Harbor, China, 01 June 2023

24

Guest Lecture (2023) "GPenSIM: A New Tool for Modelling and Analysis of Discrete Systems," Fudan University, Shanghai, China; May 31, 2023

23

Guest Lecture (2023) "GPenSIM: A New Tool for Modelling and Analysis of Large Industrial Discrete Systems," AGH University of Science and Technology, Krakow, Poland, 01 March 2023.

22

Guest Lecture (2022) “Mathematical Modeling of Discrete Systems with Petri Nets,” KCA University, Nairobi, Kenya; 22 November 2022.

21

Guest Lecture (2022, Online) "Introduction to Discrete Systems and its applications in Management Science," University of Shanghai for Science and Technology | Business School, Shanghai, China, 01 November 2022.

20

Guest Lecture (2022) to MS Students “Excelling in Academics (and in our Personal Lives),” Faculty of Engineering and Natural Sciences, Suleyman Demirel University, Kaskelen, Kazakhstan; 26 October 2022.

19

Guest Lecture (2022) “GPenSIM: A New Tool for Modelling of Large Discrete-Event Systems,” Faculty of Engineering and Natural Sciences, Suleyman Demirel University, Kaskelen, Kazakhstan; 26 October 2022.

18

Guest Lecture (2019) "GPenSIM: A New Tool for Modelling and Analysis of Large Industrial Discrete Systems," Guest Lecture at the Riga Technical University, Riga, Latvia, November 21, 2019.

17

Guest Lecture (2017) “GPenSIM: A tool for modeling and simulation of discrete event systems,” the Department of Automation, Faculty of Electrical and Electronics engineering, Kaunas University of Technology, Kaunas, Lithuania, October 31, 2017.

16

Guest Lecture (2016): “Developing a testbed for Swarmanoid bots”, Silesian University of and Technology, the Institute of Engineering Processes, Automation and Integrated Manufacturing Systems, Faculty of Mechanical Engineering, Gliwice, Poland, 12 May 2016.

15

Guest Lecture (2015): “Modeling Complex Discrete Event Systems: A New Approach based on Petri Nets”, AGH University of Science and Technology, Department of Applied Computer Science, Faculty of EEACSBI, Krakow, Poland, 25 November 2015.

14

Guest Lecture (2015): “Automation of Supplier Selection Procedures”, the Industrial and Information Systems Engineering program, Department of Industrial and Systems Engineering, Seoul University of Science and Technology (SeoulTech), Seoul, South Korea, 03 June 2015.

13

Guest Lecture (2014): “Reduction Technique to discover existence of Polynomial Algorithms”, the Department of Informatics and Quantitative Methods, Faculty of Informatics and Management, University of Hradec Kralove, Hradec Kralove, Czech Republic, 29 April 2014.

12

Guest Lecture (2014): “Modeling, Simulation and Performance Analysis
of Discrete-Event Systems”, the Faculty of Information Technology (FIT), Silesian University of Technology, Poland, March 04, 2014.

11

Guest Lecture (2011): “Modeling, Simulation and Performance Analysis
of Discrete-event Dynamic Systems”, the Faculty of Information Technology (FIT), Multimedia University (MMU), Cyberjaya Campus, Cyberjaya, Malaysia, 30 November 2011.

10

Guest Lecture (2011): “GPenSIM: A Tool for Modeling and Simulation of Discrete-event Dynamic Systems”, the Faculty of Information Science and Technology (FIST), Multimedia University (MMU), Melaka Campus, Melaka, Malaysia, 01 December 2011.

9

Guest Lecture (2010): “Discrete Event Systems with Petri Net: A Hands-On Approach with GPenSIM”, University of Mauritius, Reduit, Mauritius, 12 October 2010.

8

Guest Lecture (2009): “Modeling Business Infrastructure: Making Most Money from Core Business Capabilities”, Maria Curie-Sklodowska University (UMCS), Lublin, Poland, 02 December 2009.

7

Guest Lecture (2009): “Modeling and Simulation of Discrete Event Systems with Petri Net: A Hands-On Approach with GPenSIM”, Budapest University of Technology and Economics (BME), Budapest, Hungary, 27 October 2009.

6

Guest Lecture (2009): “Modeling Discrete Event Systems with Petri Net: A Hands-On Approach with GPenSIM”, Ryerson University, Toronto, Canada, 08 October 2009.

5

Guest Lecture (2009): “GPenSIM: General Purpose Petri Net Simulator”, Rzeszow University of Technology, Rzeszow, Poland, 10 June 2009.

4

Guest Lecture (2009): “GPenSIM: General Purpose Petri Net Simulator”, AGH University of Science and Technology, Krakow, Poland, 09 June 2009.

3

Invited Talk (2009): “Implementing E-Government in Developing Countries: Issues, Problems, and Solutions”, International Conference on E-government & E-governance, Ankara, Turkey, 12-13 March 2009

2

Invited Talk (2008): “Alternative (greener) energy supply to North-east Sri Lanka”. Talk given at the International Seminar – “Towards a Global INGO”, in Oslo, Norway, 22 September 2008

1

Seminar (2006): “Mathematical Approaches for Logic Modeling and Programming in Information Systems”, University of Stavanger, Stavanger, Norway, 27 April 2006; Talk given as part of the seminar in natural science series.