Free Access
Volume 13, Number 1, 1999
Page(s) 1 - 18
DOI: 10.1051/ejess:1999100

European Journal of Economic and Social Systems 13 N$^\circ$ 1 (1999) pp. 1-18

On the qualitative properties in system dynamics models

Javier Aracil

Escuela Superior de Ingenieros, Universidad de Sevilla, Camino de
los Descubrimientos s/n, Sevilla-41092 Spain; E-mail:


This paper proposes that the concept of ``qualitative'' developed around the qualitative theory of nonlinear dynamical systems be applied to the field of system dynamics in order to provide a more solid foundation for the use of the qualitative in this field. The advantages of the use of qualitative concepts are ana-lyzed both from a conceptual and an operational point of view. A preliminary stage in the world modeling process is used to illustrate this proposal.

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