......................................................................................................................................................... ii Acknowledgements ........................................................................................................................................iv List of tables ........................................................................

Process-based models of nutrient transport are often used as tools for management of eutrophic waters, as decision makers need to judge the potential effects of alternative remediation measures, under current conditions and with future land use and climate change. All modelling exercises entail uncertainty arising from various sources, such as the input data, selection of parameter values and t...

A number of techniques have been developed in recent years for the analysis and design of controllers which are robust with respect to structured complex uncertainty. In particular the complex p synthesis procedure has been successfully applied to a number of engineering problems. However the presence of real parametric uncertainty in the problem description substantially complicates matters, s...

In this paper, new results have been derived for the local observer design for nonlinear control systems with real parametric uncertainty around equilibia. In this paper, it is first shown that equilibrium-state detectability is a necessary condition for the existence of local asymptotic observers for any nonlinear system and using this result, it is shown that for the classical case, when the ...

A numerical algorithm for effective incorporation of parametric uncertainty into mathematical models is presented. The uncertain parameters are modeled as random variables, and the governing equations are treated as stochastic. The solutions, or quantities of interests, are expressed as convergent series of orthogonal polynomial expansions in terms of the input random parameters. A high-order s...

In this paper the linear fractional representation problem of systems with rational parametric uncertainty is revisited from a multidimensional systems perspective. It is shown how this problem can be solved using the elementary operations approach. The minimality of the linear fractional representations obtained using this approach and other methods will be discussed. An example is presented t...