Uma proposta de oficina de coloração de mapas e grafos para o ensino fundamental e médio

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Integrated cutting machine programming and lot sizing in furniture industry

In this paper a mathematical model that combines lot-sizing and cutting-stock problems applied to the furniture industry is presented. The model considers the usual decisions of the lot sizing problems, as well as operational decisions related to the cutting machine programming. Two sets of a priori generated cutting patterns are used, industry cutting patterns and a class of n-group cutting patterns. A strategy to improve the utilization of the cutting machine is also tested. An optimization package was used to solve the model and the computational results, using real data from a furniture factory, show that a small subset of n-group cutting patterns provides good results and that the cutting machine utilization can be improved by the proposed strategy.

Um problema de corte de estoque multiobjetivo

In this paper we deal with the one-dimensional integer cutting stock problem, which consists of cutting a set of available objects in stock in order to produce ordered smaller items in such a way as to optimize a given objective function, which in this paper is composed of three different objectives: minimization of the number of objects to be cut (raw material), minimization of the number of different cutting patterns (setup time), minimization of the number of saw cycles (optimization of the saw productivity). For solving this complex problem we adopt a multiobjective approach in which we adapt, for the problem studied, a symbiotic genetic algorithm proposed in the literature. Some theoretical and computational results are presented.

Desenvolvimento de catalisadores sem platina: estudos comparativos da oxidação de metanol em 'PD''RU'/'C' e 'PT''RU'/'C' em meio alcalino

Pós-graduação em Química - IQ

Pesquisa em Educação Ambiental: compromisso com a vida

Different environmental disasters registered around the world and their consequences to nature and to the biodiversity, including the human beings, lead us to deal with nature’s mysteries and with our limits In controlling technological apparatus that make us proud enough to think that we can control nature’s processes. These kinds of experiences, considered as a real “being-event”, make us experiment processes of disillusion related to the possibilities of science and technology. Considering this frame and the historical human experiences, one fundamental question is related to our position, our professional and ethical commitments and our responsibilities facing this reality. How can we deal with these facts that are continuously announcing the limits of nature, of science, technologies and our self-limits? As researchers involved with environmental education, it seems plausible for us to ask about the ethical commitments related to our “acts” of investigation. So, considering different and stimulating possibilities opened by intellectual and philosophers who are adding significant contributions to these debates, my proposal for this essay is to invite environmental education researchers to carry on a dialog involving these questions with some perspectives proposed specially by Bakhtin (1895 – 1975) and some other authors affiliated or not to his approach. This seems to be an opportunity which allows us to realize that our commitments as environmental education researchers would be identified with our commitments with life

Características de las experiencias españolas de presupuesto participativo: intento de encuadramiento en una tipología

Participatory Budgeting (PB) is an innovative methodology of public budget management. It includes the common citizen in decision-making process, which does not happen in traditional budget processes. PB emerged in Brazil in the last two decades of the last century (Porto Alegre’s experience is the best known model) and spread to several countries since then. The spread of the practice has produced significant changes in relation to the original proposals, requiring the efforts of analysts to identify them in different situations, carried out by different political actors, with different objectives. Pires and Pineda (2008a) proposed a typology of PB sought to contemplate the experiences from the simplest to the most daring and less sophisticated to the pretentious, so as to allow assessment of the maximum number of cases. In this article the Spanish experiences of PB are characterized from this typology, highlighting its most relevant aspects. It is a useful study to understand the evolution of PB in Spain, but also to continue the effort to better define what is and can become the participatory budget as a possible tool for improving the management of local public finance and democracy

Presupuestos participativos (PPs) e instituciones participativas (IPs) en Brasil: criterios (y marco) para la evaluación de experiencias y casos

This paper identifies relevant criteria for evaluation of participatory budgeting and participatory institutions that are currently adopted by governments of both Brazil and elsewhere, highlighting the importance of a comprehensive assessment that integrates all these criteria. Finally, it is recommended to pay special attention to assessing the desirability of these institutions, which are not always positively for theories on democracy

Cooperando com a África, Portugal e Brasil o papel das universidades e de outras redes socioculturais, o caso de Angola

Studies about cooperation between Portugal, Brazil and Angola are recent and controversial, mainly when we see them from the perspective of democratic countries, Republicans and capitalists. From the middle of this decade to this current date, that triangular relationship historic brought many important issues to international geopolitics, particularly those involving the Southern Cone of America and Africa. In that play of interests, the strategicdiplomatic and cultural universities’ role, of the civil society organizations, enterprises and institutions with mixed capital is too important because they are who forged the new Angolan group leader as the nation-state need contribution of human resources, scientific, technological and cultural order to consolidate their position as a regional power in southern Africa.

Memórias subterrâneas, histórias (re) visitadas: a contribuição metodologia da história oral em estudos de grupos étnicos

This article aims to reflect on the contribution of oral history in studies involving memory and identity of ethnic groups. Problematic issues here are part of the result of two recently completed researches, which consisted of reconstructing the memory of Afro-Brazilians from the methodology of oral history. These surveys were intended to transpose, into written language, memories transmitted by oral tradition and which was confined to family circles. The first was to investigate the process of identification and transmission of knowledge from a black cultural practice in the countryside of São Paulo (Piracicaba, Capivari, and Tietê), the Batuque of Umbigada, and the second to reconstruct the stories and culture of Afro-Brazilians in the city of Itu, São Paulo.

Relações de Gênero, memória e identidades no Brasil do século XX

Gender relationships focusing on homages to the women of Assis (a town in the center-western region of the state of São Paulo, Brazil) between 1959 and 1994, are discussed. Homages, expressed in monuments, street names, city squares, schools, libraries, Cultural Centers and other places, are based on the activities of women who benefitted the community. They feature lawyers, politicians, journalists, teachers and common citizens that exceeded their personal limitations and conquered a place acknowledged by society (politically invested) so that their names may be inscribed in the city´s public places. However, acknowledgement of female contributions in the construction of the city is not projected at the same pace or speed as that of males who compose the gallery of ‘remembered men’. This fact brings forth the following questions: If the naming of public places were for decades based on gender, what had changed by the end of the 1950s for such a redefinition? What is the true meaning of such homages? Who are these women and what do they represent?

História e Literatura: escritos coloniais de fins do século XVI e início do século XVII

In this article, we analyze the works of Pero de Magalhães Gândavo in what we name colonial writings. They are texts written between the late 16 th century and the early 17th century. Gândavo’s intention, as with the other colonial writers, is to defend the interests of the settlers. With that, we counter historiography in general and Brazilian historiography in particular, which sees them as authors identified with metropolitan interests.