Contribution a l'ETUDE De l'ISOMORPHISME Dans Les Systemes Complexes, a Partir Des Systemes Biologiques Et Des Caracteres Extraits Par Forrester

Abstract

Life is an open system; moreover, it is classically admitted as being a complex system. Isomorphism in complex systems is examined by comparison between structural and behaviour features drawn by Forrester and the living's features. The study of the features of homologies in complex system should lead to formal laws.

Using wood creep data to discuss the contribution of cell-wall reinforcing material

“…The analysis is based on a visual assessment of the trajectories in the complex planes (J , J ) or (E , E ), hoping that they will suggest appropriate rheological models to describe the behaviour of the samples [15][16][17][18].…”

“…Excluding the points corresponding to the earliest stage of the relaxation process (t < 1000 s), the remaining points could be considered as a portion of circle, plotted as a dotted line. As explained by Huet [15], a portion of circle in the complex plane indicates the possibility to use a parabolic model to represent the rheological behaviour of a viscoelastic material like wood. The parameters of the parabolic link can be evaluated by visual assessment of the graph: the rigidity of the link E 0 1 is given by the horizontal extent of the circle portion, the parabolic order p 1 by the ratio of the vertical extent to half the horizontal extent, and the characteristic time τ 1 by the time needed to reach the highest point.…”