Emeritus Prof Theodor Stewart, BSc(Chem Eng) Cape Town MSc PhD UNISA FRSSAf




Office: PD Hahn 562
Tel:+27 21 650 3224
Email: theodor.stewart@uct.ac.za
Curriculum vitae : Download full curriculum vitae here

Research Interests: Operations research; Decision analysis; Multiobjective optimization; Natural resources management

Position: Professor Emeritus

Courses Taught:
  • STA3043S – Decision Theory and Generalised Linear Models
  • STA2004F – Statistical Theory and Inference
  • Operations Research (Honours)
Biographical Information
  • Professor Department of Statistical Sciences 1984-2008 (and Head of Dept 1994-1999).
  • Part-time Professor of Decision Science, Manchester Business School, University fo Manchester (2007-)
  • Previously Director and Head of Operations Research and Statistics in the National Research Institute for Mathematical Sciences of the CSIR, Pretoria
Research Interests
  • Application of multicriteria decision analysis (discrete choice and goal programming approaches) in energy, fisheries, water, land use planning, health
  • Integration of multicriteria decision analysis with scenario planning and data envelopment analysis
  • Development of genetic algorithms for multiobjective optimization
  • Application of operations research to developmental problems
Publications since 2008
  • Janssen, R., van Herwijnen, M., Stewart, T. J., and Aerts, J. C. J. H., 2008. Multiobjective decision support for land use planning. Environment and Planning B: Planning and Design, volume 35, pages 740-756.
  • Joubert, A. R., Janssen, R., and Stewart, T. J., 2008. Allocating fishing rights in South Africa: A participatory approach. Fisheries Management and Ecology, volume 15, pages 27-37.
  • Stewart, T., Bandte, O., Braun, H., Chakraborti, N., Ehrgott, M., G÷belt, M., Jin, Y., Nakayama, H., Poles, S., and Di Stefano, D., 2008. Real-world applications of multiobjective optimization. In J. Branke, K. Deb, K. Miettinen, and R. S lowi#nski, editors, Multiobjective Optimization - Interactive and Evolutionary Approaches, Lecture Notes in Computer Science, chapter 11. Springer-Verlag GmbH, Berlin, Heidelberg.
  • Yang, J.-B., Wong, B. Y. H., Xu, D.-L., and Stewart, T. J., 2009. Integrating DEA-oriented performance assessment and target setting using interactive MOLP methods. European Journal of Operational Research, volume 195, pages 205-222.
  • Durbach, I. N. and Stewart, T. J., 2009. Using expected values to simplify decision making under uncertainty. OMEGA: International Journal of Management Science, volume 37, pages 312-330.
  • Stewart, T. J., Joubert, A., and Janssen, R., 2010. MCDA framework for fishing rights allocation in South Africa Group Decision and Negotiation, volume 19, pages 247-265. Download PDF
  • Belton, V. and Stewart, T. J., 2010. Problem structuring and MCDA. In M. Ehrgott, J. R. Figueira, and S. Greco, editors, Trends in Multiple Criteria Decision Analysis, chapter 8. Springer, pages 209-239 Download PDF
  • Stewart, T. J., 2010. Goal directed benchmarking for organizational efficiency Omega, The International Journal of Management Science, volume 38, pages 534-539. Download PDF
  • I. N. Durbach and T. J. Stewart. An experimental study of the effect of uncertainty representation on decision making. European Journal of Operational Research, 214:380-392, 2011.
  • I. N. Durbach and T. J. Stewart. A comparison of simplified value function approaches for treating uncertainty in multi-criteria decision analysis. Omega, The International Journal of Management Science, 40:456-464, 2012.
  • I. N. Durbach and T. J. Stewart. Modelling uncertainty in multi-criteria decision analysis. European Journal of Operational Research, 223:1-14, 2012. T. J. Stewart, S. French, and J. Rios. Integrating multicriteria decision analysis and scenario planning -review and extension. Omega, The International Journal of Management Science,41:679-688, 2013. DOI: 10.1016/j.omega.2012.09.003
  • R. Janssen, A. R. Joubert, and T. J. Stewart. A multicriteria approach to equitable fishing rights allocation in South Africa's Western Cape. In P. J. H. van Beukering, E. Papyrakis, J. Bouma, and R. Brouwer, editors, Nature's Wealth: The Economics of Livelihoods and Ecosystem Services in Africa and Asia, pages 157-173. Cambridge University Press, 2013.
  • T. J. Stewart, S. French, and J. Rios Integrating multicriteria decision analysis and scenario planning - review and extension. Omega, The International Journal of Management Science, 41:679-688, 2013. DOI: 10.1016/j.omega.2012.09.003. . Download PDF
  • T. J. Stewart and R. Janssen. Integrated value function construction with application to impact assessments International Transactions in Operational Research, 20:559-578, 2013. DOI: 10.1111/itor.12016. Download PDF
  • K. Miettinen, J. Mustajoki, and T. J. Stewart. Interactive multiobjective optimization with NIMBUS for decision making under uncertainty. OR Spectrum, 36:39-56, 2014. DOI: 10.1007/s00291-013-0328-5.
  • T. J. Stewart and R. Janssen. A multiobjective GIS-based land use planning algorithm. Computers, Environment and Urban Systems, 46:25-34, 2014. DOI: 10.1016/j.compenvurbsys.2014.04.002. Download PDF
Postgraduate Projects

In view of my emeritus position, it seems I cannot be primary supervisor, but will collaborate in any research areas related to operational research for development and/or to multicriteria decision support and multiobjective optimization.