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The Network Architectures and Services Group

The NAS group belongs to the Quantum and Computer Engineering Department in the faculty of Electrical Engineering, Mathematics and Computer Science (EEMCS) of the Delft University of Technology.

NAS educates and conducts research in the broad area of complex networks, ranging from man-made infrastructures such as data communications and energy networks, to biological, brain, social and financial networks. The emphasis lies on understanding network characteristics as well as the processes running on top of the network.

NAS participates in the Bachelor's program of Electrical Engineering and in the following Master Programs of Delft University of Technology:

  • Master of Science (MSc) in Computer Science
  • Master of Science (MSc) in Telecommunications
  • Master of Science (MSc) in Computer Engineering
  • Master of Science (MSc) in Embedded System





  • [Opening - Deadline Extension] Five Ph.D and two PostDoc positions are available in the NAS group related to the ERC ViSioN: Virus Spread in Networks project. More information on the PhD positions can be found here (pdf) and on the PostDoc positions here (pdf). The application deadline is extended to 31 of August.
  • [Opening] One Ph.D. position available in the Network Architecture and Services (NAS) group in the Faculty of Electrical Engineering, Mathematics, and Computer Sciences at TU Delft. As a Ph.D. student, you will conduct ground-breaking research at the intersection of Network Science, Machine Learning, and Science of Science. More details are available here:
  • 16.03.2022: Rob Kooij gave a presentation at the NetworkIT 2022 Event. NetworkIT is a growing open-source toolkit for large-scale network analysis.
  • 25.01.2022: On 21 January 2022, Long Ma received his PhD degree. His thesis is available here: Spreading processes in complex networks and systems.
  • 24.01.2022: On 19 January 2022 Rob Kooij gave a virtual talk entitled "Robustness of Complex Networks" at the Atlantic Graph Theory Seminar, which is organised by the Dalhousie University, in Halifax. The seminar provides talks on a variety of current topics in graph theory. Links to the recorded video, the slides of his presentation, as well as other presentations, can be found at: link 1link 2 and link 3.
  • 13.01.2022: Peng Sun received his PhD degree. His thesis is available here: Robustness of controllability and recoverability of complex networks.

  • 22.12.2021: The proposal of Dr. Maksim Kitsak titled "Mathematical Description and Inference of Complementarity Mechanisms in Complex Networks" has been selected for funding by the Dutch Research Council (NWO).
  • 25.11.2021: The PhD student Peng Sun gave an online presentation titled “The Recoverability of Network Controllability” at the 5th International Conference on System Reliability and Safety (ICSRS 2021). This presentation is based on a paper written by Master graduate Anqi Chen who was supervised by Peng Sun and Rob Kooij. 
  • 24.11.2021: On 24 November 2021, Rob Kooij will give an on-line talk at the Humboldt University, Berlin (Section Modeling and Analysis of Complex Systems, Department of Computer Science). The section focuses on computational aspects of large scale dynamical networks. Prof. Kooij will give an overview of the research conducted at NAS and explore opportunities for collaboration. 
  • 22.11.2021: Last Friday, Rob Kooij gave a guest lecture at VU Amsterdam entitled “Robustness of Complex Networks”.  The guest lecture is part of the master course “Performance  of Networked Systems”, which is taught at Computer Science (both Business Analytics and the Internet and Web Technology Track).
  • 19.11.2021: The master student Tian Gan has graduated in the NAS section on the time-varying topology of SIS epidemics on adaptive networks. Her thesis is available here.
  • 01.11.2021: Dr. Maksim Kitsak joins the board of the Dutch Network Science Society.
  • 28.10.2021: Piet Van Mieghem will give a talk about virus spread in networks for the Bataafsch Genootschap on December 6th in Rotterdam.
  • 28.10.2021: A description of the ERC grant of Piet Van Mieghem for ViSioN (Virus Spread on Networks) can be found here.
  • 26.10.2021: Octávio Miguel Silveira Teixeira, from the NOVA University of Lisbon, did his master project "Network Structures in the Dark Web" with NAS as an ERASMUS student. However, due to COVID-19 he conducted the whole project from Portugal, from February until August 2021. Last week he finally got the opportunity to visit Delft and to meet up with his supervisor Rob Kooij! 


  • 05.07.2021: The 4th Delft - Girona Workshop on Robustness of Complex Networks will take place on Wednesday July 7th.
  • 17.05.2021: Bastian Prasse received his PhD degree with Cum Laude. His thesis is available here: Epidemics on networks: Analysis, Network Reconstruction and Prediction
  • 10.05.2021: Dr. Nazli Yonca Aydin, assistant professor at the Systems Engineering department of the Faculty of Technology, Policy and Management gave a guest lecture at NAS with title "Measuring Response and Recovery Behavior of Urban Water Networks".
  • 22.04.2021: Piet Van Mieghem has received an ERC Grant for ViSioN, Virus Spread on Network.
  • 01.03.2021: Dr. Mattia Sensi joins NAS as a PostDoc researcher. 

  • 02.11.2020: Rob Kooij gave a talk for the Bataafsche Genootschap.
  • 25.10.2020: Piet Van Mieghem participated in the COVID-19 panel at the 40th International symposium on forecasting.
  • 24.07.2020: Piet Van Mieghem gave an interview for The Network Pages. See the interview here
  • 02.07.2020: A new paper on (lack of) resilience in transportation networks is now published in Transportation Research Part D journal. Find it here
  • 02.07.2020: New paper on maximum-entropy in weighted network ensembles is now available on arXiv:
  • 11.06.2020: Piet Van Mieghem gave an interview for the TU Delta platform. See the interview here (in Dutch) and here (in English).
  • 05.06.2020: NAS participates in the Resilient Society on COVID-19:
  • 11.04.2020: Piet Van Mieghem gave an interview for the Telegraaf newspaper. See the interview here.

  • 06.04.2020: Piet Van Mieghem has appeared on the Dutch newspaper NRC (read here), the NPO TV (watch here) and the NPO radio (listen here) for research related to COVID-19.
  • 02.04.2020: Rob Kooij has been appointed as part-time professor in NAS.
  • 17.03.2020: New paper titled "Latent Geometry of Complementarity-driven Networks” available on arXiv:
  • 17.03.2020: Zhidong He received his PhD degree. His thesis is available here: Performance of Complex Networks
  • 13.03.2020: The latest NAS research on the 2019-nCoV can be found here: COVID-19 Prediction
  • 12.02.2020: NAS developed a prediction method for the Coronavirus (2019-nCoV). Available on arXiv: 
  • 09.02.2020: Maksim Kitsak is joining NAS as an Assistant Professor as of 1st March 2020.
  • 29.10.2019: The initial research results within the NExTWORKx project were presented in a poster session at the KPN headquarters in Rotterdam.  
  • 16.10.2019: Zhidong He, Peng Sun and Piet Van Mieghem received the 2019 James P. G. Sterbenz Best Paper Award at the 11th International Workshop on Resilient Networks Design and Modeling (RNDM).

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