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Aquatic ecosystems are natural complex systems. They are the site of a great number of phenomena. Thus, many studies model each of these phenomena, using law-based approach (most of the time differential equations) or rule-based approach (individual-based models in particular). Owing to their complex nature, aquatic ecosystems are hard to study and resist a(More)
In view of the variety of 3D representation techniques, a clinical study was carried out in order to evaluate their respective usefulness. It appears that a single technique cannot be claimed to be valid for all clinical situations and that a combination of representations brings more relevant information. Among the different techniques a clear delineation(More)
In this paper, we present a methodology for aquatic ecosystem modeling. We based our model on the holarchic (non directional hierarchic) nature of the ecosystems. Aquatic ecosystems are crossed by structuring fluxes (light radiation , mass transport, etc.) which confer multi-level of emergent organizations. Elsewhere, a part of aquatic ecosystems are(More)
— We propose some ways computer science can be used to help modeling in general and ecological modeling in particular, beyond numerical solving of mathematical models. More precisely we present a summary analysis of ecological modeling following two pairs of criteria (Rules vs. laws and State variables vs IBM), upon which we built an ontological computer(More)
In this article, we are interested in providing a framework to develop games for visually impaired or blind children. In this context, we propose a tool set to ease the creation of such games based on an actor metaphor. As the possible outputs are multimodals (mostly not graphical) we provide an abstract library. The architecture is composed of an engine(More)
This paper deals with aquatic ecosystem model in estuaries context. These systems are described with functional organizations which are producers, consumers and decomposers. We use a hierarchical representation which is based on com-partmental model. The different compartments exchange various fluxes of their global components, like oxygen for example , as(More)