A cultura afro-brasileira na sala de aula: uma proposta de trabalho pedagógio com obras que dialogam com o livro 'Três anjos mulatos do Brasil ', de Rui de Oliveira

The theme of African-Brazilian culture is still little explored in the school environment, in spite of the 10.639/03 law which prescribes its mandatory teaching as well as that of African-Brazilian history and African culture in all schools, public and private, from the Elementary School level to High School. Moreover, this law emphasizes the importance that these cultures had in the formation of Brazilian society. Considering this issue, this paper aims to analyze the work Três anjos mulatos do Brasil (2011), by Rui de Oliveira, which brings together three sensitive and touching biographies, followed by beautiful and artistic pictures. hese narratives address the genius of three great artists –Aleijadinho, Mestre Valentim and Father José Maurício–, their styles, their creations and struggle for recognition, as well as the sufering they experienced, primarily caused by racial discrimination. Also, we intend to present in this text a suggested pedagogical use of the work by Oliveira, by applying the “Recepcional” method, as it was deined by Bordini and Aguiar (1993).

An approximate method for the solution of an influence function foil rolling model

Fleck and Johnson (Int. J. Mech. Sci. 29 (1987) 507) and Fleck et al. (Proc. Inst. Mech. Eng. 206 (1992) 119) have developed foil rolling models which allow for large deformations in the roll profile, including the possibility that the rolls flatten completely. However, these models require computationally expensive iterative solution techniques. A new approach to the approximate solution of the Fleck et al. (1992) Influence Function Model has been developed using both analytic and approximation techniques. The numerical difficulties arising from solving an integral equation in the flattened region have been reduced by applying an Inverse Hilbert Transform to get an analytic expression for the pressure. The method described in this paper is applicable to cases where there is or there is not a flat region.

A Petrov-Galerkin method for a singularly perturbed ordinary differential equation with non-smooth data

In this paper, a singularly perturbed ordinary differential equation with non-smooth data is considered. The numerical method is generated by means of a Petrov-Galerkin finite element method with the piecewise-exponential test function and the piecewise-linear trial function. At the discontinuous point of the coefficient, a special technique is used. The method is shown to be first-order accurate and singular perturbation parameter uniform convergence. Finally, numerical results are presented, which are in agreement with theoretical results.