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Performance e educa？？o: rela？？es, significados e contextos de investiga？？o
Pereira, Marcelo de Andrade;
Educa？？o em Revista , 2012, DOI: 10.1590/S0102-46982012000100013
Abstract: the following article presents and discusses the concept of performance. it intends to relate the meanings of performance to educational practice. as a meta-philosophical investigation this paper tries to analyze performance (making performance itself the object of investigation) considering the contributions of anthropology, theory of literature, linguistics, arts and pedagogy. to this extent this text makes an attempt to retain the meaning of pedagogical practice as based in aesthetical principles. as one might expect, the investigation takes place in the context of performance - art, communication and culture - the purpose being, to prove (justify) a theory of performance in education, because by taking the proposition of a practical performance pedagogy further, it points the way for educational action of an expressive character/nature. as well as qualitatively evaluating the aesthetic experience, and an aesthetic education, the investigation also intends to measure the teacher's communication, empirically (another words, quantitatively).
A dimens？o performativa do gesto na prática docente
Pereira, Marcelo de Andrade;
Revista Brasileira de Educa？？o , 2010, DOI: 10.1590/S1413-24782010000300012
Abstract: the present study, in the form of an essay, argues, from a philosophical point of view, about the meaning of gestures in general and in teaching practice. the analysis proceeds from the differentiation of the meaning of the gesture from a mere motor gesture to symbolic or expressive gestures from which one perceives the proper meaning of gesture for this investigation. it is inferred that the performative, and therefore expressive, dimension of the gesture allows for the creation of a space for experimentation and construction of knowledge that is qualitatively distinct from the ordinary and not regulated by merely biological, cognitive or instrumental purposes. this perspective comprehends gesture from its performative dimension as an aesthetic act. the study describes and analyzes the contents, the objects, the conditions and the effects of the aesthetic element with regard to a performative teaching practice. the investigation is supported by the intuitions of osman lins, walter benjamin, hans ulrich gumbrecht, jean galard, baldine saint girons, among others.
A dimens o performativa do gesto na prática docente
Marcelo de Andrade Pereira
Revista Brasileira de Educa？？o , 2010,
Abstract: Este artículo, de carácter ensayístico, discurre, desde un punto de vista filosófico, sobre el sentido del gesto en forma general y en la práctica de la educación. El análisis procede de la diferenciación del sentido del gesto - del simple gesto motor en relación a los gestos figurados o expresivos - a partir de lo cual se desprende la acepción propia del gesto a la investigación. Se deduce que la dimensión del desempe o y, por lo tanto, expresiva del gesto, permite crear un espacio de experimentación y construcción del saber cualitativamente diferente del ordinario, no regulado por intenciones de orden puramente biológica, cognitiva o instrumental. Esta perspectiva comprende el gesto desde su dimensión de desempe o como un acto estético. Se describen y se analizan los contenidos, los objetos, las condiciones y los efectos del elemento estético en razón de una práctica docente de desempe o. La investigacipon es amparada por las intuiciones de Osman Lins, Walter Benjamin, Hans Ulrich Gumbrecht, Jean Galard, Baldine Saint Girons, entre otros.
Usina do Trabalho do Ator: creative (mis)direction
Marcelo de Andrade Pereira
Revista Brasileira de Estudos da Presen？a , 2012,
Abstract: This article discusses the creative process of the theatre group Usina do Trabalho do Ator – UTA – from the state of Rio Grande do Sul, Brazil. It presents an overview of some spectacles of the group since its creation, questioning the notion of actor/author, and staging as narrative. It also discusses the limits between reality and fiction in the spectacles of UTA. The analysis is basically guided by Walter Benjamin’s writings on experience, narration and tradition. It also deals with the concepts of artistic creation from French essayist Paul Valéry.
Revis？o de Ceyxia Girault, stat. rev. (Hymenoptera, Chalcididae, Brachymeriini)
Andrade, Tathiana Viana de;Tavares, Marcelo Teixeira;
Revista Brasileira de Entomologia , 2009, DOI: 10.1590/S0085-56262009000400004
Abstract: the genus ceyxia girault has its status revalidated and 27 species are assembled under it. seven species previously described are diagnosed (or redescribed) and discussed and 20 new species are described. ceyxia flaviscapus girault, 1911 and c. ventrispinosa girault, 1911 stat. rev. were originally combined with ceyxia and following are new combinations: c. belfragei (crawford, 1910) comb. nov., stat. rev.; c. concitator (walker, 1862) comb. nov.; c. decreta (walker, 1862) comb. nov.; c. dorsalis (walker, 1861) comb. nov.; and c. villosa (olivier, 1790) comb. nov. ceyxia paraguayensis girault, 1911 is proposed as junior synonymy of ceyxia flaviscapus girault, 1911. the new species are: c. acutigaster sp. nov.; c. amazonica sp. nov.; c. atuberculata sp. nov.; c. bellissima sp. nov.; c. dentiformis sp. nov.; c. diminuta sp. nov.; c. fusidentata sp. nov.; c. gibbosa sp. nov.; c. laminata sp. nov.; c. laticlipeata sp. nov.; c. latilabra sp. nov.; c. longiarticulata sp. nov.; c. longiscutellaris sp. nov.; c. longispina sp. nov.; c. nigropetiolata sp. nov.; c. paraensis sp. nov.; c. parvidentata sp. nov.; c. perparva sp. nov.; c. pseudovillosa sp. nov.; and c. tibiodilatata sp. nov. host relationships of some species of the genus are presented. a key to species of the genus is also included.
A Reliability-Based Strategy for the Analysis of Single Proton Exchange Membrane Fuel Cells  [PDF]
Patricia da Silva Pagetti de Oliveira, Vinicius Andrea, Elisabete Inacio Santiago, Thiago Lopes, Delvonei Alves de Andrade, Marcelo Linardi
Energy and Power Engineering (EPE) , 2019, DOI: 10.4236/epe.2019.118019
Abstract:
The development of power conversion systems based on fuel cells has been demanding reliability studies since the requirements associated with cost and durability of these technological products have become fundamental to their acceptance by the energy market. The experimental part of the reliability study presented in this work consisted of performing life tests with single proton exchange membrane fuel cells (PEMFCs). The proposed reliability analysis methodology covered the application of qualitative and quantitative techniques. In the qualitative approach, a Failure Mode and Effect Analysis was developed in order to identify and evaluate all potential failures associated with the operation of fuel cells. In the quantitative approach, a statistical analysis was applied to the sample data generated in long-term steady-state tests of these devices. A two-parameter exponential distribution was fitted to data and the maximum likelihood estimate for the mean time to failure (MTTF) of the fuel cells was calculated. It is important to point out that the tests performed under the scope of this study were the first long-term experiments performed with the fuel cells produced in the laboratories of IPEN-CNEN/SP, Brazil. Although the results indicated that fuel cell performance and durability were still at a level below the targets normally established for similar commercial devices, the improvement of the main components of PEMFCs has been the objective of several projects developed at the institute. Thus, the main benefit brought by this study is the proposed methodology, which can be implemented as part of a reliability growth analysis of the fuel cells and can be integrated into the design process of these devices.
O pro-álcool e algumas rela？？es CTS concebidas por alunos de 6a série do ensino fundamental
Andrade, Elenise Cristina Pires de;Carvalho, Luiz Marcelo de;
Ciência & Educa？？o (Bauru) , 2002, DOI: 10.1590/S1516-73132002000200003
Abstract: the increasing environmental degradation and the recognition of critical problems nowadays, mainly energetic questions, have intensified the concerning by researchers and science teachers in order to consider in science teaching activities on aspects related to interactions between human beings and the environment. the necessity of incorporating questions related to values and the interactions between science, technology and society in science teaching activities began to be recognized as crucial by science teachers and experts. an objective resulting of this tendency is to approach science, technology and society (sts) as a whole of proposals to science teaching. in brazil there are few researches in science teaching trying to explore theses possibilities and few classroom experiences dealing with this approach. this research was carried out from may to november, 1996. it systematically collected data in one class of 12 years olds brazil's fundamental school (from 7 to 14 year olds). a discussion with pupils of a national project installed in brazil in 1975 to product ethanol as an alternative source of energy for cars was promoted. a complete set of activities applying diversified teaching procedures and pedagogic materials were planned and carried out. the results indicate that, if we can offer to pupils opportunities for discussing and reflecting, through diversified teaching procedures and a rich environment in terms of pupils proposals and questioning, we can bring to classrooms different dimensions related to science, technology, society and environment, from specific examples close to pupils, about science and technology development.
Modified ART: why not?
Maria de Lourdes de Andrade Massara,Marcelo B？necker
Brazilian Oral Research , 2012, DOI: 10.1590/s1806-83242012000300001
Abstract:
Probing interchain interactions in emissive blends of poly[2-methoxy-5-(2'-ethylhexyloxy)-p-phenylenevinylene] with polystyrene and poly(styrene-co-2-ethylhexyl acrylate) by fluorescence spectroscopy
De Andrade, Marcelo L.;Atvars, Teresa D. Z.;
Journal of the Brazilian Chemical Society , 2006, DOI: 10.1590/S0103-50532006000500027
Abstract: we present dynamic and static photoluminescence studies on polymer blends of conjugated poly[2-methoxy-5-(2'-ethylhexyloxy)-p-phenylenevinylene] (meh-ppv) with polystyrene-co-1-pyrenyl methyl methacrylate and its copolymer poly(styrene-co-2-ethylhexyl acrylate-co-1-pyrenylmethyl methacrylate) (with 9 mol% and 19 mol% of 2-ethylhexyl acrylate units and 0.06 mol% of 1-pyrenyl). pyrenyl-labeled polystyrene and its copolymers were synthesized by emulsion polymerization and characterized by 13c and 1h-nmr, ftir, gpc, dsc, and uv-vis. spin-coating films of the blends were prepared from chloroform solutions with 0.1, 0.5, 1.0, and 5.0 wt% of meh-ppv. the miscibility of these systems was studied by non-radiative energy transfer processes between the 1-pyrenyl moieties (the energy donor) and meh-ppv (the energy acceptor). the relative emission intensities and the fluorescence lifetimes of the donor showed that the miscibility of meh-ppv and the copolymers is greater than that of meh-ppv and polystyrene and this was confirmed by epifluorescence optical microscopy and scanning electron microscopy.
O desenvolvimento de atividades práticas na escola: um desafio para os professores de ciências
Andrade, Marcelo Leandro Feitosa de;Massabni, Vania Galindo;
Ciência & Educa？？o (Bauru) , 2011, DOI: 10.1590/S1516-73132011000400005
Abstract: practical activities contribute to interest and learning in science, especially when they require investigation and problematization. so, the goal of the study was to understand how science teachers in fundamental education perceive these activities and also to know if there are applied and the reasons for their use/not use in everyday schooling. the study interviewed science teachers, who had indicated difficulties and who used practical activities rarely. when they are used, it happens after theoretical study, to illustrate theory only. teachers justify rarely using these practices because they feel insecure and they do not have school structure and human support. teachers value practical activities but perceive practical activities only as complementary to theoretical classes. teachers understand the necessity for more practical activities, but feel anguish because they do not make it happen. the researchers considered difficulties expressed by teachers and give some suggestions to encourage practical activities in brazilian educational public system.
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