Emeritus Professor David Murray Ryan

MSc Otago, PhD ANU

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Emeritus Professor


Professor David Ryan has a PhD in Numerical Analysis from the Australian National University and a Master of Science in Mathematics from the University of Otago

Research | Current

  • Mathematical programming and optimization theory.
  • Optimization techniques of operations research.
  • Scheduling, timetabling and combinatorial optimization problems.
  • Curve fitting and solution of under-determined linear systems.

Selected publications and creative works (Research Outputs)

  • Phillips, A. E., Waterer, H., Ehrgott, M., & Ryan, D. M. (2015). Integer programming methods for large-scale practical classroom assignment problems. Computers & Operations Research, 53, 42-53. 10.1016/j.cor.2014.07.012
  • Phillips, A., Walker, C. G., Ehrgott, M., & Ryan, D. (2014). Integer programming for minimal perturbation problems in university course timetabling. In E. Ozcan, E. K. Burke, B. McCollum (Eds.) Proceedings of the 10th International Conferencwe on the Practie and Theor of Automated Timetabling, 366-379. York, UK. Related URL.
    Other University of Auckland co-authors: Cameron Walker
  • Lusby, R. M., Larsen, J., Ehrgott, M., & Ryan, D. M. (2013). A set packing inspired method for real-time junction train routing. Computers and Operations Research, 40 (3), 713-724. 10.1016/j.cor.2011.12.004
  • Rasmussen, M. S., Lusby, R. M., Ryan, D. M., & Larsen, J. (2011). A subsequence generation approach for the airline crew pairing problem. 51st AGIFORS Annual Proceedings - Annual Symposium and Study Group Meeting, AGIFORS 2011, 1, 584-605.
  • Ryan, D. M. (2011). It is Time to Enjoy the Best of Both Worlds. Paper presented at OR53 Annual Conference of the Operational Research Society (UK), Nottingham. 6 September - 8 September 2011.
  • Lusby, R. M., Larsen, J., Ehrgott, M., & Ryan, D. M. (2011). Routing Trains Through Railway Junctions: A New Set Packing Approach. Transportation Science, 45 (2), 228-245.
    URL: http://hdl.handle.net/2292/11639
  • Lusby, R. M., Larsen, J., Ehrgott, M., & Ryan, D. (2011). Railway track allocation: models and methods. OR Spectrum, 33 (4), 843-883. 10.1007/s00291-009-0189-0
  • Tam, B., Ehrgott, M., Ryan, D., & Zakeri, G. (2011). A comparison of stochastic programming and bi-objective optimisation approaches to robust airline crew scheduling. OR Spectrum, 33 (1), 49-75. 10.1007/s00291-009-0164-9
    URL: http://hdl.handle.net/2292/13119
    Other University of Auckland co-authors: Golbon Zakeri