Publications Dr. Cornelia Wichelhaus née Sauer


  1. Sauer, C. Netzwerke von Warteschlangen über Graphen mit ausfallenden Knoten, Diploma thesis, University of Hamburg, June 2002. (awarded with the diploma thesis prize 2003 of the GI/ITG assembly group Measurement, Modeling and Evaluation of computer systems)
  2. Sauer, C. Stochastic product form networks with unreliable nodes: analysis of performance and availability, Dissertation, University of Hamburg, June 2006. (awarded with the dissertation prize 2007 of the German society for Operations Research GOR)


Refereed Papers

  1. Sauer, C., Daduna, H. Separable networks with unreliable servers.
    In J. Charzinski, R. Lehnert, P. Tran-Gia, editors, Providing QoS in Heterogeneous Environments (Proceedings of the 18th ITC), volume 5b of Teletraffic Science and Engineering, pp. 821-830, Elsevier Science, Amsterdam, 2003.
    (awarded with the Best Student Paper Award)
  2. Sauer, C., Daduna, H. Availability formulas and performance measures for separable degradable networks,  Economic Quality Control, Vol.18, No.2, pp. 165-194, 2003.
  3. Sauer, C., Daduna, H. Degradable networks with general up and down time distributions.
    In P. Buchholz, R. Lehnert, M. Pioro, editors, Proceedings of the 12th GI/ITG Conference on MMB together with 3rd PGTS, pp. 185-194, VDE Verlag GmbH, Berlin, 2004.
  4. Schwarz, M., Sauer, C., Daduna, H., Kulik, R., Szekli, R. M/M/1 Queueing systems with inventory, Queueing Systems, Vol.54(1), pp. 55-78, 2006.
  5. Daduna, H., Kulik, R., Sauer, C., Szekli, R. Dependence ordering for queueing networks with breakdown and repair, Probability in the Engineering and Informational Sciences, Vol.20(4), pp. 575-594, 2006.
  6. Schwarz, M., Wichelhaus, C., Daduna, H. Product form models for queueing networks with an inventory, Stochastic Models, Vol.23(4), pp. 627-663, 2007.
  7. Kulik, R., Wichelhaus, C. Dependence in lag for Markov chains on partially ordered state spaces with applications to degradable networks,  Stochastic Models, Vol.23(4), pp. 683-696, 2007.
  8. Wichelhaus, C. Availability and performance analysis of stochastic networks with unreliable nodes.  In J. Kalcsics and S. Nickel, editors, Operations Research Proceedings 2007, pp. 23--28, 2008.
  9. Kulik, R., Wichelhaus, C. Nonparametric conditional variance and error density estimation in regression models with dependent errors and predictors,  Electronic Journal of Statistics, Vol.5, pp. 856-898, 2011.
  10. Wichelhaus, C., Langrock, R. Nonparametric inference for stochastic feedforward networks based on cross-spectral analysis of point processes,  Electronic Journal of Statistics, Vol.6, pp. 1670-1714, 2012.
  11. Kulik, R., Wichelhaus, C. Conditional variance estimation in regression models with long memory, Journal of Time Series Analysis, Vol. 33, 468-483, 2012.
  12. Horn, N., Kresken, M., Körber-Irrgang, B., Göttig, S., Wichelhaus, C. and Wichelhaus, T.A. Antimicrobial susceptibility and molecular epidemiology of Neisseria gonorrhoeae in Germany, International Journal of Medical Microbiology, Vol.304, 586-591, 2014.
  13. Edelmann, D., Wichelhaus, C. Nonparametric inference for queueing networks of Geom^X / G /\infty -queues in discrete time, Advances in Applied Probability, Vol.46, 790-811, 2014.
  14. Schweer, S., Wichelhaus, C. Nonparametric estimation of the service time distribution in the discrete-time GI / G /\infty -queue with partial information, Stochastic Processes and their Applications, Vol. 125, 233-253, 2015.
  15. Schweer, S., Wichelhaus, C. Queueing Systems of INAR(1) Processes with Compound Poisson Arrivals, Stochastic Models, Vol. 31, 618-635, 2015.
  16. Antunes, N., Jacinto, G., Pacheco, A. and Wichelhaus, C.  Estimation of the traffic intensity in a piecewise-stationary M_t/ G_t/1 queue with probing, Performance Evaluation Review, Vol. 44, 3-5, 2016.
  17. Jozsa, K., de With, K., Kern, W., Reinheimer, C., Kempf, V., Wichelhaus, C. and Wichelhaus, T.A. Intestinal carriage of multidrug-resistant bacteria among healthcare professionals in Germany, GMS Infectious Diseases, Vol. 5, 2017.   


Submitted Papers

  1. Schweer, S., Wichelhaus, C. Nonparametric estimation of the service time distribution in discrete-time queueing networks, 2017. 
  2. v.Rohrscheidt, M., Wichelhaus, C.  Bayesian nonparametric inference for M/G/1 queueing        systems, 2017.
  3. v.Rohrscheidt, M., Wichelhaus, C. Bayesian nonparametric inference for the M/G/1 queueing system based on the marked departure process, 2017. 



  1. Sauer, C., Daduna, H. Modeling networks with unreliable servers, Proceedings of the 2. MMB-Arbeitsgespräch Leistungs-, Zuverlässigkeits- und Verlässlichkeitsbewertung von Kommunikationsnetzen und verteilten Systemen, Berichte des Fachbereichs Informatik der Universität Hamburg, No. 242, pp. 83 - 90, Hamburg, September 2002.
  2. Sauer, C. Netzwerke von Warteschlangen über Graphen mit ausfallenden Knoten,
    MMB-Mitteilungen, No.44, pp. 7-9, Herbst 2003.
  3. Wichelhaus, C. Zuverlässigkeits- und Leistungsanalyse stochastischer Netzwerke,
    OR News, Nr. 33, pp. 26--28, Herbst 2008.
  4. Wichelhaus, C. Nonparametric inference for networks of queues,
    Oberwolfach Reports, Nr. 48, pp. 2806--2808, 2010.





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