The present paper is aimed at improving minimization methods in traffic flows, particularly reducing the costs of civil transportation through sections transport network by giving priority to public densely developed areas. In cities with a radial and radial–circular planning scheme road network, where arterial flows converge central part, challenge street congestion often arises. As result, de...

We define an elliptic equation for Hermitian metrics which is related to the Einstein condition. Solutions to this equation are closely related to Kähler-Einstein metrics, and are automatically Kähler-Einstein when a certain non-positive condition is satisfied by c1(M). Given this, a natural flow equation arises taking Hermitian metrics to Kähler metrics. We prove short time existence and regul...

The aim of this study was to investigate factors associated to frequent and heavy drug use among street children and adolescents aged 10 to 18 years. A sample of 2,807 street children and adolescents from the 27 Brazilian state capital cities was analyzed. A World Health Organization questionnaire for non-students was adapted for use in Brazil. Data analysis was performed using logistic regress...

The color component of the urban environment is most flexible and sensitive to changes. Of course, it easier repaint façades than change street pattern. Especially with arsenal tools offered by modern technologies.As lighting streets squares changes, facades also become variable, turning into gigantic screens before our eyes. Will we be able keep technological break-through within reasonable et...