This paper is the ...rst attempt of applying the Easley Rustichini (Econometrica, 1999, 5) Replicator dynamics framework to simple one-period security markets, with a ...nite set of actions for traders. In two and three action environments, the examples developed here show that even with very simple (objective) state spaces and straightforward Replicator Dynamics, prices may not necessarily con...

This tutorial deals with the cognitive skills based adaptive educational environments an approach to designing tutoring systems that has been very effective, especially within applied domains where the learning is predominantly concerned with acquiring operational knowledge. Since such environments can accommodate both the 'instruction' and 'construction' of knowledge and actively engage the le...

ii Acknowledgements iii

The majority of educational software is designed for traditional computers, which allow little opportunity for physical manipulation of an environment. Tangible Activities for Geometry (TAG) provides students a tangible learning environment. Currently, however, TAG does not employ adaptive scaffolding techniques. Accordingly, we describe how scaffolding techniques and teachable agent behaviors ...

Homeostasis is known as a key concept in biology and well-documented on various levels of biological organization. Moreover, homeostasis appears to be strongly related to the stability of biological systems. Stability, on the other hand, is one of the basic concepts in dynamical systems theory. The aim of this paper is to link these two fundamental concepts. A simple model is proposed represent...