Correlação entre o teatro épico de Brecht e o teatro do oprimido de Boal: aspectos de conscientização e emancipação política

II Jornadas Latino-Americanas de Linguagens e Cultura. Em comemoração aos 100 anos de nascimento de Roa Bastos e 50 anos da morte de Guimarães RosaO que é o teatro? Há uma dualidade na concepção desta palavra, pode-se entendê- la como um lugar onde podem ser apresentados espetáculos, ou como um objeto artístico que será encenado. Esta crise pela qual passa a definição da palavra teatro, assemelhasse com o que Bertolt Brecht encontrou quando começou a desenvolver sua teoria sobre um o Teatro Épico na Alemanha utilizando-o como uma arma de conscientização política, situação semelhante a que Augusto Boal encontrou no Brasil quando desenvolveu o método do Teatro do Oprimido como um instrumento de emancipação políticaPrograma de Pós-Graduação em Literatura Comparada Programa de Pós-Graduação Interdisciplinar em Estudos Latino-Americanos Curso de Graduação em Letras – Artes e Mediação Cultura

Reduction of magnetostatic interactions in self-organized arrays of nickel nanowires using atomic layer deposition

Ordered arrays of magnetic nanowires are commonly synthesized by electrodeposition in nanoporous alumina templates. Due to their dense packing, strong magnetostatic interactions prevent the manipulation of wires individually. Using atomic layer deposition we reduce the diameter of the pores prior to electrodeposition. This reduces magnetostatic interactions, yielding fully remanent hysteresis loops. This is a first step towards the use of such arrays for magnetic racetrack memories

Entre Brecht e Boal: a desconstrução da personagem épica rumo a aniquilação da personagem oprimida

Dissertação apresentada ao Programa de Pós- Graduação em Literatura Comparada da Universidade Federal da Integração Latino- Americana, como requisito à obtenção do título de Mestre em Literatura Comparada. Orientador: Prof. Dr. Fernando Mesquita de FariaEsta pesquisa procura realizar uma análise comparativa da personagem no teatro épico, partindo da obra do dramaturgo alemão Bertolt Brecht, em oposição ao emprego da personagem no método do teatro do oprimido, desenvolvido pelo pesquisador brasileiro Augusto Boal. Propõe-se uma investigação diacrônica sobre as origens da personagem dramática, buscando compreender e identificar sua função, finalidade e transformação. Ao confrontar as características dramáticas da personagem na proposta épica, constata-se a desconstrução do modelo tradicional da personagem que, comparadas às técnicas do teatro do oprimido, encaminham-se para a sua aniquilação. Partindo dessa perspectiva, pretende-se responder à questão da essencialidade da personagem após o advento da crise do drama, culminando no conceito do teatro pós-dramático, estabelecido pelo pesquisador Hans Thies LehmannEsta investigación busca realizar un análisis comparativo del personaje en el teatro épico, partiendo de la obra del dramaturgo alemán Bertolt Brecht, en oposición al empleo del personaje en el método del teatro del oprimido, desarrollado por el investigador brasileño Augusto Boal. Para el emprendimiento de este trabajo, se propone una investigación diacrónica sobre los orígenes del personaje dramático, buscando comprender e identificar su función, finalidad y transformación. Al confrontar las características dramáticas del personaje en la propuesta épica, se constata la desconstrucción del modelo tradicional del personaje que, comparadas a las técnicas del teatro del oprimido, se encaminan a su aniquilación. A partir de esa perspectiva, se pretende responder a la cuestión de la esencialidad del personaje después del advenimiento de la crisis del drama, culminando en el concepto del teatro post-dramático, establecido por el investigador Hans Thies LehmannThe present academic work intends to analysis comparative of the character in the epic theater originated from the German playwrite Bertold Brecht’s work compared to the character’s use in the method of the theater of the opressed, developed by the brazilian researcher Augusto Boal. Proposing a diachronic investigation about the origins of the dramatic character, seeking to understand and identify its function, purpose and transformation. Comparing the dramatic characteristics of a character in the epic proposal, verifying the making of a non-traditional role model of the character compared to the technics of the “theater of the opressed, leading to its extermination. From this perspective, the intention is to answer the question about the character’s core after the advent of the drama crisis, climaxing in the concept of post dramatic theater stablished by the reasearcher Hans Thies Lehman

Condensation in a square minichannel: application of the VOF method

This paper was presented at the 3rd Micro and Nano Flows Conference (MNF2011), which was held at the Makedonia Palace Hotel, Thessaloniki in Greece. The conference was organised by Brunel University and supported by the Italian Union of Thermofluiddynamics, Aristotle University of Thessaloniki, University of Thessaly, IPEM, the Process Intensification Network, the Institution of Mechanical Engineers, the Heat Transfer Society, HEXAG - the Heat Exchange Action Group, and the Energy Institute.A number of steady-state simulations of condensation of R134a at mass fluxes G=100 kg m-2s-1 and G=800 kg m-2s-1 inside a square cross section minichannel (Dh=1mm) are here proposed and compared against similar simulations in a circular cross section channel with same diameter. The VOF (Volume Of Fluid) method is used to track the vapour-liquid interface and the effects of interfacial shear stress and surface tension are both taken into account. A uniform wall temperature is fixed as boundary condition. At G=100 kg m-2s-1 the liquid film is assumed laminar and the vapour flow is turbulent; turbulence is handled by a low-Reynolds number form of the standard k-w model (Wilcox, 1998), which was modified in order to suppress the turbulent viscosity inside the liquid phase. At G=800 kg m-2s-1 a low Re form of the SST k-w model (Menter, 1994) has been used for turbulence modeling through both the liquid and vapour phases. Numerical simulations are validated against experimental data. The present paper looks at the effect of surface tension. Its influence on the shape of the vapour-liquid interface provides some heat transfer enhancement in non-circular minichannels. In circular minichannels, the overall effect of surface tension is shown to be not significant. On the contrary, the effect of surface tension in square channels provides a large enhancement at low mass flux

Observation of Bloch-point domain walls in cylindrical magnetic nanowires

Topological protection is an elegant way of warranting the integrity of quantum and nanosized systems. In magnetism one example is the Bloch-point, a peculiar object implying the local vanishing of magnetization within a ferromagnet. Its existence had been postulated and described theoretically since several decades, however it has never been observed. We con rm experimentally the existence of Bloch points, imaged within domain walls in cylindrical magnetic nanowires, combining surface and transmission XMCD-PEEM magnetic microscopy. This opens the way to the experimental search for peculiar phenomena predicted during the motion of Bloch-point-based domain walls

Quantitative analysis of shadow X-ray Magnetic Circular Dichroism Photo-Emission Electron Microscopy

Shadow X-ray Magnetic Circular Dichroism Photo-Emission Electron Microscopy (XMCD-PEEM) is a recent technique, in which the photon intensity in the shadow of an object lying on a surface, may be used to gather information about the three-dimensional magnetization texture inside the object. Our purpose here is to lay the basis of a quantitative analysis of this technique. We first discuss the principle and implementation of a method to simulate the contrast expected from an arbitrary micromagnetic state. Text book examples and successful comparison with experiments are then given. Instrumental settings are finally discussed, having an impact on the contrast and spatial resolution : photon energy, microscope extraction voltage and plane of focus, microscope background level, electric-field related distortion of three-dimensional objects, Fresnel diffraction or photon scattering

Broadband Setup for Magnetic-Field-Induced Domain Wall Motion in Cylindrical Nanowires

In order to improve the precision of domain wall dynamics measurements, we develop a coplanar waveguide-based setup where the domain wall motion should be triggered by pulses of magnetic field. The latter are produced by the Oersted field of the waveguide as a current pulse travels toward its termination, where it is dissipated. Our objective is to eliminate a source of bias in domain wall speed estimation while optimizing the field amplitude. Here, we present implementations of this concept for magnetic force microscopy (MFM) and synchrotron-based investigation

Extensive degeneracy, Coulomb phase and magnetic monopoles in an artificial realization of the square ice model

Artificial spin ice systems have been introduced as a possible mean to investigate frustration effects in a well-controlled manner by fabricating lithographically-patterned two-dimensional arrangements of interacting magnetic nanostructures. This approach offers the opportunity to visualize unconventional states of matter, directly in real space, and triggered a wealth of studies at the frontier between nanomagnetism, statistical thermodynamics and condensed matter physics. Despite the strong efforts made these last ten years to provide an artificial realization of the celebrated square ice model, no simple geometry based on arrays of nanomagnets succeeded to capture the macroscopically degenerate ground state manifold of the corresponding model. Instead, in all works reported so far, square lattices of nanomagnets are characterized by a magnetically ordered ground state consisting of local flux-closure configurations with alternating chirality. Here, we show experimentally and theoretically, that all the characteristics of the square ice model can be observed if the artificial square lattice is properly designed. The spin configurations we image after demagnetizing our arrays reveal unambiguous signatures of an algebraic spin liquid state characterized by the presence of pinch points in the associated magnetic structure factor. Local excitations, i.e. classical analogues of magnetic monopoles, are found to be free to evolve in a massively degenerated, divergence-free vacuum. We thus provide the first lab-on-chip platform allowing the investigation of collective phenomena, including Coulomb phases and ice-like physics.Comment: 26 pages, 10 figure