Submitted papers:

Refereed papers:

  1. Trend visualization on Twitter: What's hot and what's not? (with Sandjai Bhulai, Peter Kampstra, Lidewij Kooiman, Marijn Deurloo and Bert Kok).
    Proceedings of Data Analytics, Barcelona, pages 43-48, IARIA, 2012.
  2. Optimising a general repair kit problem with a service constraint (with Marco Bijvank and Iris Vis).
    European Journal of Operational Research 204:76-85, 2010.
  3. Dynamic Load Balancing and Job Replication in a Global-Scale Grid Environment: a Comparison (with Menno Dobber and Rob van der Mei).
    IEEE Transactions on Parallel and Distributed Systems 20:207-218, 2009.
  4. Resource allocation in grid computing (with Rhonda Righter).
    Journal of Scheduling 11:163-173, 2008.
  5. Workload minimization in re-entrant lines (with Auke Pot).
    European Journal of Operational Research 174:216-233, 2006.
  6. Dynamic load balancing for a grid application (with Menno Dobber and Rob van der Mei).
    In Proceedings of HiCP 2004, Bangalore, pages 342-352, Springer LNCS 3296, 2004.
  7. An explicit solution for the value function of a priority queue (with Philippe Nain).
    Queueing Systems 47:251-282, 2004.
  8. On the structure of value functions for threshold policies in queueing models (with Sandjai Bhulai).
    Journal of Applied Probability 40:613-622, 2003.
  9. On the bias vector of a two-class preemptive priority queue (with Robin Groenevelt and Philippe Nain).
    Mathematical Methods of Operations Research 55:107-120, 2002.
  10. On the value of learning for Bernoulli bandits with unknown parameters (with Sandjai Bhulai).
    IEEE Transactions on Automatic Control 45:2135-2140, 2000.
  11. On the value function of a priority queue with an application to a controlled polling model (with Philippe Nain).
    Queueing Systems 34:199-214, 2000.
  12. On the use of the power series algorithm for general Markov processes, with an application to a Petri net.
    INFORMS Journal on Computing 9:51-56, 1997.
  13. Marked point processes as limits of Markovian arrival streams (with Sören Asmussen).
    Journal of Applied Probability 30:365-372, 1993.

Other scientific papers:

  1. The deviation matrix of the M/M/1 and M/M/1/N queue, with applications to controlled queueing models.
    In Proceedings of the 37th IEEE CDC, Tampa, pages 56-59, 1998.
  2. Nonconservative service for minimizing cell loss in ATM networks (with Zhen Liu).
    In Proceedings of WATM '95, Paris, pages 123-130, 1995.
  3. On scheduling and routing problems with a partially observed environment (with Olaf Passchier).
    Technical Report TW-95-13, Leiden University, 1995.
  4. Polling models with threshold switching (with Onno Boxma and Isi Mitrani).
    In Quantative Methods in Parallel Systems, pages 129-140, Springer-Verlag (Esprit Basic Research Series), 1995.

Publications in the professional literature:

Popular-scientific articles:

  1. De wiskunde van het wachten.
    Pythagoras 43(1):30-32, 2003.
  2. Met wiskunde naar de zon.
    Pythagoras 42(5):12-15, 2003.
  3. Eurodiffusie: een model voor je portemonnee.
    STAtOR 3(4):13-15, 2002.
  4. Het modelleren van de Eurodiffusie.
    Nieuwe Wiskrant 21(4):24-26, 2002.
  5. The Euro Diffusion Project (with Piet van Blokland, Lorna Booth, Kirankumar Hiremath, Michiel Hochstenbach, Sorin Pop, Marieke Quant, and Djoko Wirosoetisno).
    Proceedings of the 42nd European Study Group with Industry, CWI syllabus 51, pages 41-57, 2002.
  6. Stochastisch dynamisch programmeren.
    Nieuwe Wiskrant 21(3):23-26, 2002.
  7. Virtuele wetenschap.
    STAtOR 2(3): 27-28, 2001.
  8. Wiskunde tussen model en werkelijkheid.
    Public lecture, Vrije Universiteit Amsterdam, 30 November 2000.
  9. An optimal dice rolling policy for Risk.
    Nieuw Archief voor Wiskunde 12:49-52, 1994.


  1. Waarheid met kans nul (with Gerard Alberts and Jaap Molenaar).
    Nieuw Archief voor Wiskunde (fifth series) 6:215-220, 2005.
  2. Gele dingen die kunnen drijven (with Laurens Gelling and Jaap Molenaar).
    Nieuw Archief voor Wiskunde (fifth series) 6:47-50, 2005.
  3. Managementpotentieel (with Jaap Top and Roel Verstappen).
    Nieuw Archief voor Wiskunde (fifth series) 5:232-236, 2004.
  4. Tussen wetenschap en commercie (with Gerard Alberts and Hans Melissen).
    Nieuw Archief voor Wiskunde (fifth series) 4:327-331, 2003.
  5. Twee seconden is hier een eeuwigheid (with Gerard Alberts and Jaap Molenaar).
    Nieuw Archief voor Wiskunde (fifth series) 4:224-228, 2003.
  6. Het wiskunde B1,2-examen (with Alex van den Brandhof).
    Nieuw Archief voor Wiskunde (fifth series) 4:165-166, 2003.
  7. Behoud de keuzevrijheid - Wiskunde en politiek bij G. Zoutendijk (with Gerard Alberts).
    Nieuw Archief voor Wiskunde (fifth series) 2:36-41, 2001.


Editorial work:

  1. Special issue in honor of Arie Hordijk (with Lodewijk Kallenberg and Floske Spieksma).
    Mathematical Methods of Operations Research 62(3), 2005.
  2. Proceedings of the fifty-second European study group with industry (with Jan Bouwe van den Berg, Sandjai Bhulai, Joost Hulshof, Corrie Quant, JF Williams).
    CWI Syllabus 55, CWI, Amsterdam, 2005.

Press articles:

  1. Wiskunde toepassen.
    Business Process Magazine 15(3):20-25, May 2009.
  2. Een emmer vol slome eurocenten.
    Volkskrant, 4 January 2003.