About me

Welcome to my homepage! I am a mathematician, currently conducting research in Queueing Theory ('Wait, what?'). I am a proud member of the SMACS Research Group at Ghent University.

While queueing processes with a one-dimensional state space can be analyzed in great detail, only few exact analytic results are known for queueing processes with a multi-dimensional state space (with the exception of some specific classes). My research focusses on the analysis of two-dimensional queueing systems. I am especially interested in closed-form results and/or asymptotic results.

In May 2022 I obtained a PhD in Mathematical Engineering at Ghent University, under supervision of em. prof. dr. ir. Herwig Bruneel, prof. dr. ir. Joris Walraevens and prof. dr. Dieter Fiems. An electronic version of my dissertation can be found here.

Publications

I am first author and principal investigator of the following four publications :

  • A. Devos, J. Walraevens, T. Phung-Duc and H. Bruneel, Analysis of the queue lengths in a priority retrial queue with constant retrial policy, Journal of Industrial & Management Optimization, 2020, vol. 16, no. 6, pp. 2813-2842;
  • A. Devos, J. Walraevens, D. Fiems and H. Bruneel, Analysis of a discrete-time two-class randomly alternating service model with Bernoulli arrivals, Queueing Systems, 2020, vol. 96, no. 1, pp. 133-152;
  • A. Devos, J. Walraevens, D. Fiems and H. Bruneel, Approximations for the performance evaluation of a discrete-time two-class queue with an alternating service discipline, Annals of Operations Research, 2022, vol. 310, pp. 477–503 ;
  • A. Devos, J. Walraevens, D. Fiems and H. Bruneel, Heavy-Traffic Comparison of a Discrete-Time Generalized Processor Sharing Queue and a Pure Randomly Alternating Service Queue , Mathematics, 2021, vol. 9, no. 21:2723.

Talks

I try to attend one conference a year (that is relevant to queueing theory). I presented my research at three international conferences :

  • 13th International Conference on Queueing Theory and Network Applications, Tsukuba (Japan), 2018-07-25. Received the best Student Paper Award.
  • 14th International Conference on Queueing Theory and Network Applications, Ghent (Belgium), 2019-08-27.
  • 31st European Conference on Operational Research, online event, 2021-07-13.

Teaching

I would dare to say that I enjoy teaching as much I enjoy my research. In the previous years, I took care of the teaching tasks for several exercise classes.

2017-2018
  • Exercises Optimisation Techniques (Ma Bioinformatics, Ma Electrical Engineering and Ma Computer Science Engineering).
2018-2019
  • Exercises Optimisation Techniques (Ma Bioinformatics, Ma Electrical Engineering and Ma Computer Science Engineering).
2019-2020
  • Exercises Optimisation Techniques (Ma Bioinformatics, Ma Electrical Engineering and Ma Computer Science Engineering).
  • Exercises Queueing Theory (Ma Industrial Engineering and Operations Research, Ma Business Engineering and Ma Mathematics).
  • Exercises Basic Mathematics (1st Ba Engineering).
2020-2021
  • Exercises Queueing Theory (Ma Industrial Engineering and Operations Research, Ma Business Engineering and Ma Mathematics).
  • Exercises Basic Mathematics (1st Ba Engineering).
2021-2022
  • Exercises Basic Mathematics (1st Ba Engineering).
  • Exercises Discrete Mathematics II (2nd Ba Engineering).

Contact details

Arnaud Devos
Ghent University, Department of Telecommunications and Information Processing
St-Pietersnieuwstraat 41, 9000 Gent
Mail: Arnaud dot Devos at ugent dot be
Tel: +32 9 264 4271
Office: 27.11.120.011.