Statistics characterize the phenomenon studied depending on their time, place and forms of economic-social organization of collectivities they belong to. In this paper, we assume to emphasize some peculiar aspects that a regional level analyses puts forward.

In ‘Approach with caution: critical realism in social research’, Andrew Brown sets out a series of criticisms of critical realism from the perspective of systematic dialectics. This current article is one critical realist’s reply to Brown.

The present article intend to present a criterion for implantation of technologies destined to desalinated the drinking waters reser- voirs that provide the cities of the state of Ceará affected by high levels of salt. Considering the hypothesis, demonstrated in this article, that there is a...