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In this article, we analyze the current economic dynamics, the urbanization and the expansion of the lower circuit of the urban economy in Rio Grande do Norte and, specifically, on the road axis Natal-Caicó. We have adopted this road as cutting analysis due to the fact that subsystem of potiguar territory connect municipalities of the interior and the coast of the State, stand out by intercity passenger flows and be characterized by cities whose economic center is the highway that passes through, being the highway bordered by various activities of the economy not hegemonic. Our analysis is grounded in theoretical reflections on the socioeconomic dynamics of the potiguar territory and in the interpretation of statistical data regarding this dynamic and primary data resulting from field research conducted on axis Natal-Caicó. Thus, we reflect on the economic modernization of the potiguar territory, paying attention to the process of urbanization of that territory and the road axis Natal-Caicó and understated the contribution of expansion of not hegemonic economy to the process of urbanization. We conclude whereas the cities and the economy grow based on supporters of poverty structural economic activities produced by the modernization of the territory, this characteristic of the process of precarious work. As systemic response to this situation, there is the threading of the urban economy, with the lower subsystem increasingly dependent on top, as well as more permanent and receiver of workers with precarious work relations and unemployment. [ABSTRACT FROM AUTHOR]

The knowledge of the areas susceptible to the occurrence of floods contributes to the urban planning and to the minimization of the effects to which the population is exposed. This study aimed to identify sites that are prone to floods in the urban area of the main hydrographic basin of the city of Irati, State of Paraná. For this mapping, we used a Geographic Information System (GIS) associated with methodologies including fuzzy logic and hierarchical analysis. For that, criteria for analysis were the altitude, slope, distance of water courses and degree of urbanization. The results showed that 3,645 km² of the Irati urban perimeter, about 13,8% of the study area, present some degree of susceptibility to floods. The generation of maps with degrees of susceptibility varying from 0 (null) to 1 (high) was a good visual indicator to identify points of greater or lesser risk of riverbed extravasation [ABSTRACT FROM AUTHOR]

The purpose of this paper is to stimulate discussions on the terms city, urban and medium sized city, with a view to proposing criteria which, considering the specificities of the urban network of Bahia, allow to identify their medium-sized cities. Certainly because it deals, at the same time, of a theoretical debate and a mapping exercise, here does not dissipate the subject at hand. With this paper we intend to establish a starting point for the posterior elaboration of deepening studies about this question and give account of the singularities of these cities. It is understood though its results may provide of subsidies to similar researches to be conducted in other states. This work finds itself divided into four parts, and a brief introduction. Initially, we presented some ideas and concepts, made by different authors, about city and its relationship with urbanization due to industrialization. The second topic was realized a reflection of the theme medium-sized city, which reviews questions related to population size as a principle for their identification, characteristics and roles. Based on these considerations and analysis of some of the peculiarities of the urban network of state, proposed a set of basic criterions to see which of their municipal seats would be so categorized. Finally, we had woven additional discussions on this subject, highlighting the importance of studying it. [ABSTRACT FROM AUTHOR]

Studies on medium-sized cities in Brazil gain prominence in the academic and public policies development in the 1970s. With the new economic context of globalization and territorial reconfigurations, some authors have proposed the use of the term intermediate city or town intermediary, whose scope is built on qualitative criteria, including the idea of a structured space of relations and flows in us. In the Northeast, the urbanization process was slow, fragmented, dispersed geographic and economically, which resulted in a truncated urban network, which consists primarily of its nine regional capitals and about two dozen medium-sized cities, mostly interiorized. It is from this 'urban network northeastern interiorized' we seek to understand the fundamental functions of Pau dos Ferros (RN), Souza and Cajazeiras (PB) in regional development and the role they play in their respective regions of influence that permeate the ray partition RN-PB-CE. A priori these functions would offer enough jobs to accommodate the population surrounding rural and absorb the population of urban are as saturated and ease living conditions. In general terms, what can be seen is that trade and services has a very high relative share in the PIB composition of the three cities, reinforced by the participation of the state, especially the provision of education services, including higher and health, beyond of jobs, particularly in trade and public services, which allows us to treat them as a priori intermediate cities. [ABSTRACT FROM AUTHOR]

This article is about the relationship between the extreme pluvial episodes and the socioenvironmental vulnerability, as well as the results of this interaction in the organization of the urban spaces. The area of study is the city of Fortaleza-Ceara State, Brazil. The process of urbanization of this city resulted in the occupation of vulnerable environmental areas by an unprivileged socioeconomic population, resulting in the creation of spaces of risk, exposed during the intense pluvial episodes, as that happened at March, 27th 2012. It was used as theory referential the socioenvironmental approach and the Urban Climate System. The objective of the understanding of weather systems that induce intense rainfall, as well as were analyzed the former social and natural elements of natural risks and the negative consequences about the space of Fortaleza. It was found a combination of ZCIT, VCAS and CCM in the production of atmospheric instabilities of the day. It was identified and spatialized the hydrometric impacts in the city, emphasizing the aggravation of the natural risk conditions and the disorganized of the urban space in analysis. [ABSTRACT FROM AUTHOR]