"Dinâmica espacial urbana e potencial de atratividade"

AUTOR(ES)
FONTE

IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia

DATA DE PUBLICAÇÃO

2011

RESUMO

Urban environment changes according to the needs of our society. These modifications are identified in characteristics such as building typology, intensity of urban occupation, and infrastructure. Each decision is taken considering the existing urban structure and it limits the decisions of other activity units by the use of space or the relations that are established, therefore assuming a systemic behavior. It is considered here the transformation, either spatial or of urban land use as a result of the interaction among different levels of a system: individual decisions, urban subsystems (social and economic interdependence) and urban macro system (interaction among subsystems), generating an ever changing process. The concept of spatial interaction offers a thorough abstract model, in which the city is a changing force field, created by the activities¿ distribution that attract or repel themselves. The growth and location of activities follow principles such as attractiveness, accessibility (Wingo 1961), competition, agglomeration economy and social and economic relationship. Urban structure transformation is considered as a result of the interaction of components of a complex system with different organization levels: individual decisions, urban subsystems and urban macro systems. This approach considers the concepts related to the neoclassical theories within a theoretical framework linked to self-organization and sinergetics (Haken, 1983) Urban dynamic representation will occur from the Celular Automata POTENCIAT model (Potencial Change and Intra-urban Attractiveness) where activities are allocated based on the available information, which consists of: generating attractiveness by means of equal activities and their complementary ones; generating repulsion of incompatible attractivenesses. Each urban activity defines the complementarity and repulsion relations, as well as the capacity of expelling other activities from the system. The analogy used reduces the urban system to an electric field of positive and negative charges, simulating the attractiveness of each urban activity located spatially. Results of Simulations with Model POTENCIAT are object of a study based on five indicators in order to find convergence with existing properties and behavior in real systems. The results of four simulations will be evaluated according to their spatial and structural properties.

ASSUNTO(S)

espaço urbano : transformação estrutura urbana uso do solo simulação crescimento urbano desenvolvimento urbano interação espacial

ACESSO AO ARTIGO

Documentos Relacionados