Prof. Tadeusz Czachórski

Email: 

Orcid ID: 

0000-0001-7158-0258

Position: 

full professor
Research groups

Information: 

Tadeusz Czachórski received M.Sc., Ph.D., and D.Sc. degrees in informatics, respectively, in 1972, 1979, 1988, and a professor title in 1999. Since 1972, a researcher at the Institute of Theoretical and Applied Informatics of Polish Academy of Sciences, IITiS PAN, Gliwice, 2003-2023, the director of this institute, currently president of its scientific council. From 1992 to 2019,  he was also a lecturer and professor at the Silesian University of Technology.
He spent more than five years at several French universities and research institutes (IRISA Rennes, University of Versailles, ISEM Orsay Paris-Sud, Paris-Nord, National Institute of Telecommunication) and still maintains scientific cooperation with some of them. He published around 100 articles with French partners and coordinated 10 Polish-French projects, PAN-CNRS.
1990 - 2007 scientific secretary of the Committee of Informatics of the Polish Academy of Sciences, 2007 - 2011 vice-president of this committee, currently head of the section of computer networks and distributed systems of the committee.
2015-2023 Chair of IFIP Technical Committee TC5 "Information Technology and Applications" and member of IFIP General Assembly, currently a national representative at TC5. 
His scientific interests comprise mathematical methods and software related to modelling and performance evaluation of wide-area computer networks, especially the Internet. The methods include Markov chains, diffusion approximation, and fluid flow approximation. They are used to study quality of service, traffic control mechanisms, security, energy storage, and related problems.
 

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Publications
Biblio RSS

2021

26. Atmaca, T., A. Kamli, G. Suila Kuaban, and T. Czachórski, "Performance Evaluation of the Packet Aggregation Mechanism of an N-GREEN Metro Network Node", Modelling, Analysis, and Simulation of Computer and Telecommunication Systems (MASCOTS) Workshop 2020, Nice, France, Springer, January 2021.  (1.1 MB)
27. Kuaban, G. Suila, T. Atmaca, A. Kamli, T. Czachórski, and P. Czekalski, "Performance Analysis of Packet Aggregation Mechanisms and Their Applications in Access (e.g., IoT, 4G/5G), Core, and Data Centre Networks", Sensors, vol. 21, issue 3898, 06/2021.  (1.75 MB)
28. Nycz, T., T. Czachórski, and M. Nycz, "Diffusion Model of Preemptive-Resume Priority Systems and Its Application to Performance Evaluation of SDN Switches.", Sensors, vol. 21, issue 5042, 07/2021.  (1.32 MB)
29. Gelenbe, E., M. Nakip, D. Marek, and T. Czachórski, "Diffusion Analysis Improves Scalability of IoTNetworks to Mitigate the Massive Access Problem", 2021 Mascots: 29th International Symposium on the Modelling, Analysis and Simulation of Computer and Telecommunication Systems, Houston, Texas, USA, IEEE, 11/2021.  (1.99 MB)
30. Marek, D., A. Domański, J. Domańska, J. Szyguła, T. Czachórski, and J. Klamka, "Diffusion model of a non-integer order PIγ controller with TCP/UDP streams", Entropy, vol. 23, 05/2021.
31. Czachórski, T., E. Gelenbe, G. Suila Kuaban, and D. Marek, "Time-Dependent Performance of a Multi-Hop Software Defined Network", Applied Sciences, vol. 11, issue 2469, 03/2021.  (1.25 MB)
32. Szyguła, J., A. Domański, J. Domańska, T. Czachórski, J. Klamka, and D. Marek, "The IoT Gateway with Active Queue Management", International Journal of Applied Mathematics and Computer Science (AMCS), vol. 31, issue 1, 2021.
33. Marek, D., A. Domański, J. Domańska, T. Czachórski, J. Klamka, and J. Szyguła, "Combined diffusion approximation - simulation model of AQM’s transient behaviour", Computer Communications, vol. 166, 01/2021.  (3.58 MB)

2020

34. Czachórski, T., E. Gelenbe, G. Suila Kuaban, and D. Marek, "Transient Behaviour of a Network Router", 43th International Conference on Telecommunications and Signal Processing, Milano, Italy, IEEE, 2020.  (712.6 KB)
35. Domański, A., J. Domańska, T. Czachórski, J. Klamka, J. Szyguła, and D. Marek, "Diffusion Approximation Model of TCP NewReno Congestion Control Mechanism", SN Computer Science, issue 1:43, 2020.
36. Szyguła, J., A. Domański, J. Domańska, T. Czachórski, D. Marek, and J. Klamka, " AQM mechanism with neuron tuning parameters", 12th Asian Conference on Intelligent Information and Database Systems, Phuket, Thailand, 23-26 March 2020.
37. Domański, A., J. Domańska, K. Filus, J. Szyguła, and T. Czachórski, "The self-similar markovian sources", Applied Sciences, vol. 10, issue 11, 2020.
38. Atmaca, T., A. Kamli, G. Kuaban, and T. Czachórski, "Performance Evaluation of the Packet Aggregation Mechanism of an N-GREEN Metro Network Node", Modelling, Analysis, and Simulation of Computer and Telecommunication Systems, 28th International Symposium, MASCOTS 2020, Nice, France, November 17–19, 2020, Revised Selected Papers, Computer Communication Networks and Telecommunications, LNCS, vol. 12527, on-line, Springer International Publishing, 12/2020.
39. Czachórski, T., E. Gelenbe, G. Suila Kuaban, and D. Marek, "Time Dependent Diffusion Model for Security Driven Software Defined Networks", The Second International Workshop on Stochastic Modeling and Applied Research of Technology (SMARTY 2020), vol. 2792, pp. pp. 38-56, 2020.  (2.29 MB)
40. Czachórski, T., E. Gelenbe, G. Kuaban, and D. Marek, "Time Dependent Diffusion Model for Security Driven Software Defined Networks", Second International Workshop on Stochastic Modeling and Applied Research of Technology (SMARTY 2020), CEUR Workshop Proceedings, vol. 2792, Petrozavodsk, Karelia, Russia, CEUR-WS.org, pp. 38-56, 12/2020.  (2.06 MB)
41. Czachórski, T., E. Gelenbe, and D. Marek, "Software Defined Network Dynamics via Diffusions", 28th International Symposium on Modelling, Analysis, and Simulation of Computer and Telecommunication Systems, MASCOTS 2020, revised delected papers, Computer Communication Networks and Telecommunications, LNCS, vol. 12527, on-line, Springer International Publishing, 12/2020.  (447.84 KB)

2019

42. Czachórski, T., and K. Grochla, "Diffusion Approximation Models for Cloud Computations with Task Migrations", 2019 IEEE International Conference on Fog Computing (ICFC): IEEE, 2019.
43. Domański, A., J. Domańska, T. Czachórski, J. Klamka, D. Marek, and J. Szyguła, "AQM Mechanism with the Dropping Packet Function Based on the Answer of Several PIα Controllers", Communications in Computer and Information Science , vol. 1039, 2019.
44. Nowak, M., S. Nowak, J. Domańska, and T. Czachórski, "Cognitive Packet Networks for the Secure Internet of Things", Global IoT Summit (GIoTS), Aarhus, Denmark, 2019.
45. Fiuk, M., and T. Czachórski, "A Queueing Model and Performance Analysis of UPnP/HTTP client server interactions in Networked Control Systems", Computer Networks 2019, Springer, no. 1039: Springer, Communications in Computer and Information Science, pp. 366-386, 2019.
46. Czachórski, T., Diffusion approximation as a tool in computer networks performance evaluation, invited talk, The 9th International Conference on Electronics, Communications and Networks, CECNet 2019, October 18-21, 2019 Kitakyushu City, Japan, 2019.  (889.8 KB)
47. Czachórski, T., G. Suila Kuaban, and T. Nycz, "Multichannel Diffusion Approximation Models for the Evaluation of Multichannel Communication Networks", Distributed Computer and Communication Networks - 22nd International Conference, DCCN 2019, Moscow, Russia, September 23-27, 2019, Revised Selected Papers: Springer, 2019.
48. Domański, A., J. Domańska, T. Czachórski, J. Klamka, and J. Szyguła, "The AQM Dropping Packet Probability Function Based on Non-integer Order PI^αD^β Controller", Lecture Notes in Electrical Engineering, vol. 496, pp. 36-48, 2019.

2018

49. Suila, K. Godlove, T. Czachórski, and A. Rataj, "A Queueing Model of the Edge Node in IP over All-Optical Networks", Computer Networks 2018, Gliwice, Springer, Communications in Computer and Information Science, vol. 860, 06/2018.
50. Czachórski, T., "Queueing models of traffic control and performance evaluation in large Internet topologies, key-note talk", XIII International Scientific and Technical Conference, Computer Science and Information Technologies, Lviv Polytechnic National University, Lviv Polytechnic National University, 09/2018.

Pages

Historia zmian

Data aktualizacji: 09/05/2025 - 11:01; autor zmian: Tadeusz Czachórski (tadek@iitis.pl)

Tadeusz Czachórski received M.Sc., Ph.D., and D.Sc. degrees in informatics, respectively, in 1972, 1979, 1988, and a professor title in 1999. Since 1972, a researcher at the Institute of Theoretical and Applied Informatics of Polish Academy of Sciences, IITiS PAN, Gliwice, 2003-2023, the director of this institute, currently president of its scientific council. From 1992 to 2019,  he was also a lecturer and professor at the Silesian University of Technology.
He spent more than five years at several French universities and research institutes (IRISA Rennes, University of Versailles, ISEM Orsay Paris-Sud, Paris-Nord, National Institute of Telecommunication) and still maintains scientific cooperation with some of them. He published around 100 articles with French partners and coordinated 10 Polish-French projects, PAN-CNRS.
1990 - 2007 scientific secretary of the Committee of Informatics of the Polish Academy of Sciences, 2007 - 2011 vice-president of this committee, currently head of the section of computer networks and distributed systems of the committee.
2015-2023 Chair of IFIP Technical Committee TC5 "Information Technology and Applications" and member of IFIP General Assembly, currently a national representative at TC5. 
His scientific interests comprise mathematical methods and software related to modelling and performance evaluation of wide-area computer networks, especially the Internet. The methods include Markov chains, diffusion approximation, and fluid flow approximation. They are used to study quality of service, traffic control mechanisms, security, energy storage, and related problems.