Stuart Townley


Stuart Townley
Professor of Applied Mathematics

School of Engineering, Computing and Mathematics
University of Exeter
Exeter EX4 4QF
United Kingdom

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Phone:
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335 Harrison Building
+44 (0)1392 269274
+44 (0)1392 217965
s.b.townley@exeter.ac.uk

`A spirit with a vision is a dream with a mission' - Neil Peart.




Seascapes by Stuart Townley


Current and Former PhD Students


Papers since 2001

  1. R. Rebarber and  S. Townley, Non-robustness of closed-loop stability for infinite-dimensional systems under sample and hold,  IEEE Trans. Automatic Control, 47, pp. 1381-1385, (2002).
  2. N. Ozdemir and S. Townley, Integral-control by variable sampling based on steady state data, Automatica, 39, pp, 135-140, (2003).
  3. H, Logemann and S. Townley, Adaptive low-gain integral control of multivariable well-posed linear systems, SIAM J. Control & Optimization, 41, pp. 1722-1732, (2003).
  4. H. Logemann, R. Rebarber and S. Townley, Stability of infinite-dimensional sampled-data systems, Trans. Amer. Math. Soc., 355, pp. 3301-3328 (2003)
  5. D. J. Hodgson and S. Townley, Linking management changes to population dynamic responses: the transfer function of a projection matrix perturbation,  J. Applied Ecology, 41, pp. 1155-1161, (2004)
  6. H. Crauel, I. Matsikis and S. Townley, Noise assisted high gain stabilization: Almost surely or in second mean, SIAM J. Control & Optimization. 42, pp. 1834-1853, (2004).
  7. H. M. Osinga, G.R. Rokni Lamooki and S. Townley, Numerical approximations of strong (un)stable manifolds, Dynamical Systems, 19, pp. 195-215, (2004)
  8. A. Ilchmann, M. V. Thuto, and S. Townley, Input constrained adaptive l-tracking with applications to exothermic chemical reactor models, SIAM J. Control & Optimization. 43, pp. 154-173, (2004).
  9. Z. Emirsajlow and S. Townley, On application of the implemented semigroup to a problem arising in optimal control, International Journal of Control.  Vol 78, (2005) 298 – 310.
  10. A. Ilchmann, M.V. Thuto and S. Townley, Adaptive sampled-data tracking  for  input constrained exothermic chemical reaction models. Systems & Control Letters, Vol 54, 1149-1161, (2005).
  11. G.R. Rokni Lamooki, S. Townley and H. M. Osinga, Limit dynamics in adaptive control systems, International Journal of Bifurcation and Chaos. Vol. 15, (2005)  1641-1664
  12. R. Rebarber and S. Townley, Robustness with respect to sampling for stabilization of Riesz spectral systems, IEEE Trans. Automatic Control, 51, (2006), 1519-1522
  13. D. J. Hodgson, D. Mc Carthy and S. Townley, Robustness: linking life-history perturbations to stage-structured population dynamics, J. Theo. Population Biology, 70, (2006), 214-224
  14. S. Townley (and 10 others), Guaranteeing population growth under uncertainty for structured populations. To appear in Ecological Application, 2007..
  15. S. Townley, D. Carslake, O. Kellie-Smith, D. Mc Carthy and D. J. Hodgson, Predicting Transient Amplification in Perturbed Ecological Systems. To appear in J. Applied Ecology, 2007
  16. P. Ashwin, Gabor Orosz, J. Wordsworth and S. Townley, Reliable switching between three cluster states for globally coupled phase oscillators, to appear in SIAM J. Appl. Dyn. Sys., March 2007.
  17. D. J. Hodgson and S. Townley, The transient envelope of stage-structured population dynamics, submitted to Ecology
  18. M. McClean, D.J. Carslake, M.R.Evans, D.J. Hodgson and S. Townley, Predicting the effects of cat predation on the population dynamics of their avian prey, to appear in IBIS
  19. D. Mc Carthy, D. J. Hodgson and S. Townley, On second order sensitivity for stage-based population projection matrix models, submitted to  Theo. Population Biology
  20. D. J. Hodgson, R. Rebarber and S. Townley, From arks to zoos: Optimal strategies for captive rearing. submitted to Conservation Biology, Ocotober 2007