This paper forms part of a project to describe and analyse historically and anthropologically nomadic pastoralism. It reflects on mobility, its forms and scale, and more especially on the critique of predominant classical, even banal ideas which assimilate nomadism to mobility. Nomadic pastoral mobility occurs in a context that separates it radically from migratory movement. In fact, nomadic mobility constitutes a strategy that stabilizes resources and populations and whose basic foundation is the appropriation of a territorial base that is established (...) as durably as possible. Just as, and following sedentary settlement, nomadic pastoralism puts an end to migratory mobility. Thus it seems that a single idea of mobility is inappropriate to describe the two fundamentally independent phenomena represented by transcontinental migration, partly arising from the effects of the ice age, and nomadic pastoralism. (shrink)

As an introduction to our work, we emphasize the parallel interpretation of abstract tools and the concepts of undetermined and vague information. Imprecision, uncertainty and their relationships are inspected. Suitable interpretations of the fuzzy sets theory are applied to legal phenomena in an attempt to clearly circumscribe the possible applications of the theory. The fundamental notion of reference sets is examined in detail, hence highlighting their importance. A systematic and combinatorial classification of the relevant subsets of the legal field is (...) supplied for practical application. Although the use of the fuzzy sets theory is sometimes suggested as a palliative measure (no competition exists), it can also be complementary (serve as a building block to improve modelisation). An Appendix gives a brief recall of the key-concepts of the axiomatic theory of fuzziness and its developments: fuzzy sets, fuzzy logic, fuzzy control and theory of possibility. (shrink)