مدل سازی بهره برداری کوارتز فوق العاده خالص در شمال شرقی ماداگاسکار: تاثیر فعالیت در وضعیت اقتصادی و اجتماعی مردم

The collection of ultra-pure quartz is a traditional occupation of rural populations in northeastern Madagascar to complement the traditional farming activity, namely the rice crop. In this paper, we model and simulate these phenomena in order to assess the possible impact of this complementary activity on the socio-economic situation of the population. We have used the Multi-Agent System approach. In order to maximize our interpretation of some results and the scope of our analysis, we have implemented our model on two platforms, respectively named Cormas and ADK/RDK. We then examine the simulations and open a socio-economic discussion of the results.

Silica (SiO2), of which quartz represents the most common mineralogical occurrence, constitutes a natural resource long associated with human history. The degree of evolution of the first hominids was, for instance, identified 2.5 millions years ago by the way these hominids manipulated silica stones (Roche, 1989). Silica was also used in Egypt, 5000 years ago, to make the first synthetic material, glass, and the quartz itself was adopted as an ornamental stone in various proto-civilizations (Egyptian, Greek, Roman, etc.). More recently, in the twentieth century, a particular category of quartz, ultra-pure quartz (i.e. in which the silica level is greater than 99.85%), has been exploited to deal with the evolution of many technological innovations, such as sonar for the detection of submarines, frequency control, time measurement, integrated circuits, optical fibers, etc.). This ultra pure quartz is also now mainly used for the production of high performance glass and artificially cultivated quartz crystals. As such, the ultra-pure quartz is then important for the development of international industries.