Compilation of the most important documents and speeches by Pierre de Coubertin on Olympism and the Olympic Games.

In the countries with a strong muslim immigration, the practice and the organization of Islam represent a national and international politica! stake. The Belgian state, which recognizes and supports the most important cults financially, recognized Islam in 1974. But this cult doesn't still obtain this state support and the questions concerning its organization are more complex than ever. Thelegislation is insufficient and its application almost non-existent. The debates on 'integrism' and hijab have confronted us with the problem of the integrating (...) role of Islam. The Belgian political world seems today to fear the influence of foreign countries on immigrants. All these factors throw light on the history and the present state of the Belgian legislation on the organization of the islamic cult, which this article analyses. (shrink)

The proposal of this article is to present and discuss the methodology applied in the frame of a socio-anthropological research held in Bolivia and Peru on child development and growth. The objectives of the investigation were to study the mother?s perceptions (and those of other related caretakers..

Two populations are subdivided into two categories of individuals (hawks and doves). Individuals fight to have access to a resource which is necessary for their survival. Conflicts occur between individuals belonging to the same population and to different populations. We investigate the long term effects of the conflicts on the stability of the community. The modelis a set of ODE's with four variables corresponding to hawk and dove individuals of the two populations. Two time scales are considered. A fast time (...) scale is used to describe frequent encounters and fightings between individuals trying to monopolize the resource. A slow time scale is used for the demography and the long term effects of encounters. We use aggregation methods in order to reduce this model into a system of two ODE's only for the total densities of the two populations which is found to be a classical Lotka-Volterra competition model. We study different cases of proportions of hawks and doves in both populations on the global coexistence and the mutal exclusion of the two populations. Pure dove tactics in both populations are unstable. In cases of mixed hawk and dove in both populations, there is coexistence. Pure dove or mixed hawk-dove tactics in one population can coexist with pure hawks in the other one when the costs of fightings between hawks are large enough. (shrink)