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Explains that this special issue of "Numerical Linear Algebra with Applications" is devoted to the 2002 International Conference on "Preconditioning Methods for Optimal Control and Constrained Optimization Problems" held on October 23-25, 2002 in Netherlands. Goal of addressing complex issues related to preconditioning methods for constrained optimization and optimal control.

Editorial. Highlights the "Preconditioned Iterative Solution Methods for Large Scale Programs in Scientific Computations PRISM '97" Conference in Nijmegen, Netherlands on May 27-29, 1997. Submission of research papers; Discussions on linear algebra; Topics discussed.

In 1995, the Department of Mathematics and Computing Science at the Technische Universiteit Eindhoven introduced the Modelling Track in the Mathematical Engineering curriculum. It was a response to the employers' complaint about graduates' poor ability to apply their theoretical knowledge. In their first three years pairs of students collaborate on non-mathematically defined problems using mathematical methods. In 1998, the university decided to introduce Design Based Learning (DBL) in all its curricula, therewith complying with the needs of employers for graduates' applicative and collaborative abilities. DBL means professionalization, activation, co-operation, creativity, integration and multidisciplinarity. For Mathematical Engineering this innovation could signify the Modelling Track to incorporate the DBL features, e.g. working with larger groups or integration with other courses. By the year 2000, few changes have been realized. The question remains whether the original Modelling Track already fulfils the aims of DBL or that the implementation of DBL has failed in Mathematics. [ABSTRACT FROM AUTHOR]