Construções euclidianas e o desfecho de problemas famosos da geometria

Construction techniques with ruler and the compasses, fundamental on Euclidean geometry, have been related to modern algebraic theories such as solving equations and extension of bodies from the works by Paolo Ruffini (1765-1822), Niels Henrik Abel (1802-1829) and Evariste Galois (1811-1832). This relation could provide an answer to some famous problems, from ancient Greece, such as doubling the cube, the trisection Angle, the Quadrature of the Circle and the construction of regular polygons, which remained unsolved for over two thousand years. Also important for our purposes are the notions of algebraic numbers, transcendental and the criteria for constructability, of those numbers. The objective of this study is to reconstruct relevant steps of geometric constructions with ruler (unmarked) and the compasses, from the elementary to the outcome buildings, in the nineteenth century, considering those mentioned problems.

A questão da inexauribilidade do texto: o Frühromantik e a escritura derridiana

This article aims to investigate the configuration on the new scenario, during the Early German Romanticism, which led to dismantle the philosophical discourse as the expression of a safe and fixed content, free from the ambiguity of figural language. Our main argument is that already Schelling’s concept of symbol brings up the question about the opacity of the text. By analyzing to what extent this problematization around the language lingers on in the contemporariness, we refer to Derrida’s thought which points out to the illusion embedded in the pretension to conceive a clear and unambiguous language, creating therefore a new ground between art and philosophy since the text itself as a neutral and closed subject will be questioned now.

Capitu: uma transposição metaficcional

Pós-graduação em Letras - FCLAS

As tecnologias da informação no dispositivo pedagógico

Information technologies have enabled new forms of interactions among individuals, and can also be found in various educational institutions. However, despite appropriating new technological tools, educational practices continue to be based on a supposed pedagogical subject conceived as a transcendent way, ignoring his emergence and his origin in a particular historical period , and the control mechanisms by which is immersed. as well. This article aims to present results of an analysis on technology and education based on the thought of philosopher Michel Foucault. We analyzed proposals and discourses found in articles in a magazine entitled Patio - Revista Pedagógica.

Gestão Estratégica: a toxicomania organizacional e a naturalização do sofrimento no trabalho

The general purpose of this study was a reflexive-theoretical analysis, based on the authors of Psycho-Sociology, seeking to understand how to establish working relationships in organizations considered strategic in the contemporary world. To do so, we identify the strategies that these organizations use to hold the individual in theirs meshes of power, emphasizing the effects of the psychological dynamics and the illusion of “drug organization”. Finally, we elucidated some of the major diseases related to working in organizations with strategic management model, which reflect the violence imposed by managerial policy that promotes a moral harassment and naturalization of suffering at work.

Vagueza e indeterminação na noção de história de Arendt

The purpose of this paper is to present the thought of Hannah Arendt on the historical narrativa, as the reading of theories of cognition and the sign of Peirce. It is not categorial parallelism, but to highlight some approximation in order to conceive the thought and language. For both, communication is important in the formation of your thoughts. While one has broader interests, the other directs its efforts to human society, politics and history. However, both authors agree on the fallible nature o four opinions, and reject the traditional philosophies, advocates of transcendental schemes, which are imposed, silencing the experience, the source o four opinions. The proposal, to seek the experience, the origino f opinions, ou interpretations, excluding transcental rules, but the community is what gives the character of the narrative indeterminacy. They do not escape from the temporal and social factors. Therefore, are subject to what gives them legitimacy, ie, freedom.

Philosophical problem of relations according to Peirce: alliances towards an ontology of relations regarding two aspects of Synechism

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Número Irracionais e transcendentes

Pós-graduação em Matemática - IBILCE

Modelo de poços quânticos para a transferência de elétrons

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Educação ambiental e o uso de agrotóxicos

Pós-graduação em Educação - IBRC

Portugal finissecular nas crônicas de D. João da Câmara publicadas na revista portuguesa O Ocidente e no jornal brasileiro Gazeta de Notícias (1901-1905)

Pós-graduação em Letras - FCLAS

Alguns procedimentos na poética de João Cabral e sua relação com a poesia contemporânea (década de 80 e 90)

Pós-graduação em Letras - IBILCE

A face neodesenvolvimentista do Estado brasileiro: o falseamento da "questão social"

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Characterization of multiple reflections and phase space properties for a periodically corrugated waveguide

Dynamical properties for a beam light inside a sinusoidally corrugated waveguide are discussed in this paper. The beam is confined inside two-mirrors: one is flat and the other one is sinusoidally corrugated. The evolution of the system is described by the use of a two-dimensional and nonlinear mapping. The phase space of the system is of mixed type therefore exhibiting a large chaotic sea, periodic islands and invariant KAM curves. A careful discussion of the numerical method to solve the transcendental equations of the mapping is given. We characterize the probability of observing successive reflections of the light by the corrugated mirror and show that it is scaling invariant with respect to the amplitude of the corrugation. Average properties of the chaotic sea are also described by the use of scaling arguments.

Desigualdades e limites deveriam estar no centro da Rio+20

O ano de 2011 foi marcado por um conjunto de estudos (muitos dos quais patrocinados pelas Nações Unidas) segundo os quais o sistema econômico mundial já ultrapassa perigosamente algumas fronteiras ecossistêmicas, especialmente no que se refere ao clima, à biodiversidade e ao ciclo do nitrogênio. Longe, entretanto, de apoiar-se nessas conclusões, o documento inicial para a Rio+20 preconiza como solução para os grandes problemas socioambientais contemporâneos o aprofundamento daquilo que já vem sendo feito: ampliar o combate à pobreza e aprofundar a cooperação internacional em direção à ecoeficiência. Este trabalho procura mostrar que são significativas as conquistas dos últimos vinte anos nessas duas direções. Mas não há condições materiais de persistir no sucesso da luta contra a pobreza caso se perpetue a ilusão de que a desigualdade deve ser enfrentada sem que se altere o poder sobre os recursos ecossistêmicos dos que se encontram nos andares de cima da pirâmide social.