ABSTRACT
Material from this chapter was first published at the Interactive ComputerAided Learning 2005 conference in Villach, Austria. V.N. Alexandrov was with the School of Systems Engineering, The University of Reading, UK and is now with ICREA and Barcelona Supercomputing Centre, Spain. R.V. Ramirez-Verlarde is with the Computer Science Department, Tecnologico de Monterrey, Mexico.
