79,944 research outputs found
Lima Barreto: rupturas
No full textDissertação (mestrado) - Universidade Federal de Santa Catarina, Centro de Comunicação e Expressão. Programa de Pós-Graduação em Literatura.Pretende-se, ao longo desta dissertação, destacar a noção de ruptura a alimentar a obra de Lima Barreto. Para tanto, investiga-se primeiramente a fortuna crítica existente sobre Lima Barreto, tanto aquela vigente a sua época, como a posterior. Busca-se, a seguir, na contramão da crítica instituída, indicar aquelas que seriam as rupturas perpetradas por Lima Barreto, tanto em termos estéticos com ideológicos, momento em que se inverte, de certa maneira, o sinal da crítica: aquilo que ela apontava como defeito bem poderia ser mérito de Lima Barreto. Testamos esse ponto de vista na leitura mais detida de um dos romances de Lima Barreto, o Triste Fim de Policarpo Quaresma, e, depois, em observações esparsas em torno de sua obra e de suas posturas estéticas e ideológicas. Trilhado esse caminho, restava uma questão, entre outras: a necessidade de situar a obra de Lima Barreto no contexto da literatura brasileira, em que Lima Barreto aparece, normalmente, como um autor "pré-modernista". Contesta-se no corpo do texto, tal enquadramento, indicando-se, no contraponto, a modernidade e atualidade de Lima Barreto, ou a do que se poderia denominar de "bloco-popular" da sua época
A 2 h periodic variation in the low-mass X-ray binary Ser X-1
No full textSpectroscopy of the low-mass X-ray binary Ser X-1 using the Gran Telescopio Canarias have revealed a ?2 h periodic variability that is present in the three strongest emission lines. We tentatively interpret this variability as due to orbital motion, making it the first indication of the orbital period of Ser X-1. Together with the fact that the emission lines are remarkably narrow, but still resolved, we show that a main-sequence K dwarf together with a canonical 1.4 M? neutron star gives a good description of the system. In this scenario, the most likely place for the emission lines to arise is the accretion disc, instead of a localized region in the binary (such as the irradiated surface or the stream-impact point), and their narrowness is due instead to the low inclination (?10°) of Ser X-1
Políticas do primitivo: as estéticas modernistas de Mario de Andrade e Lezama Lima
No full textDissertação (mestrado) - Universidade Federal de Santa Catarina, Centro de Comunicação e ExpressãoEste trabalho visa, fundamentalmente, interpretar as tensões entre as estéticas de Mário de Andrade e de Lezama Lima na medida em que elas instauram discursividades alternativas que situadas no confronto primitivo/moderno, configuram identidades culturais diferenciadas. Enquanto problema da modernidade, a presença do primitivo coloca em crise a identidade cultural do Ocidente ao provocar o surgimento do Outro, vale dizer, a irrupção da diferença no âmbito do Mesmo. Neutralizada na abstração conceitual de "primitivismo", essa diferença é incorporada à identidade ocidental, ora a partir de concepções evolucionistas, ora a partir de operações dialéticas. Numa tentativa de interferir nesse processo incorporativo, postulamos a ressemantização do conceito de primitivo, com o propósito de recuperá-lo enquanto elemento perturbador dos efeitos padronizadores da modernidade. Nesse sentido, os primitivos latinos-americanos podem ser pensados como formas de apropriação trangressivas que, entre outras coisas, quebram com uma lógica causalista, fragmentam a linearidade das perspectivas evolucionárias e reelaboram, assim, estagnadas tradições estéticas e históricas. Consideramos, portanto, que as estéticas de Mário de Andrade e de Lezama Lima, inseridas nos conflitos de uma modernidade periférica, que se contrapõe aos efeitos globalizadores da racionalidade moderna
Uma leitura benjaminiana da narrativa de Lima Barreto
No full textTese (doutorado) - Universidade Federal de Santa Catarina, Centro de Comunicação e Expressão, Programa de Pós-Graduação em Literatura, Florianópolis, 2013Buscamos analisar as Teses benjaminianas em "Sobre o conceito de história" na representação literária de Lima Barreto, especialmente alguns conceitos importantes: memória/recordação, discriminação racial, progresso, opressores/oprimidos, explorador/explorados, discurso/política e outros. Partiremos da ideia inicial de Lima Barreto, ou seja, a de escrever a história da escravidão negra no Brasil por meio do que ele denomina de "negrismo" na literatura brasileira, entendendo que este projeto não deve ser considerado malogrado, mas pode ser encontrado em quase toda a sua obra. Se Lima Barreto não escreveu a história pretendida, sua ficção está impregnada deste projeto-sonho que, em certa medida, mantém forte relação com as teses de Walter Benjamin, especialmente com o sofrimento humano frente a regimes opressores e ditatoriais. Posto isso, intentamos compreender, à luz das teses desenvolvidas por Walter Benjamin, como o escritor analisa parte da história do Brasil na chamada belle époque do Rio de Janeiro, transformando seu projeto em narrativas ficcionais, concluídas ou inacabadas.Abstract : We pretend to analyse Walter Benjamin´s theses in "Sobre o conceito de história" (On the concept of history) in the literary representation of Lima Barreto, highlighting some important concepts: memory/remembrance, racial discrimination, progress, oppressors/oppressed, exploiters/exploited, discourse/politics and others. We will start with Lima Barreto´s initial idea, that is, of describing the history of the black slavery in Brazil through what he calls "negrismo" in Brazilian literature, while maintaining that this project should not be considered unsuccessful since it can be found in most of his works. If Lima Barreto did not write the intended history, his fiction is drenched with thoughts of a project close to his heart and which, to a certain extent, strongly parallels the theses of Walter Benjamin, especially in regard to human suffering under oppressive and dictatorial political regimes. Therefore, we tried to understand, in the light of the theses developed by Walter Benjamin, to what extent the writer Lima Barreto analyses and understands that phase of the history of Brazil called Rio de Janeiro´s "belle époque", transforming his project into fictional narratives, be they completed or unfinished
Efficient p-Multigrid Based Solvers for Isogeometric Analysis on Multipatch Geometries
No full textIsogeometric Analysis can be considered as the natural extension of the Finite Element Method (FEM) to higher-order spline based discretizations simplifying the treatment of complex geometries with curved boundaries. Finding a solution of the resulting linear systems of equations efficiently remains, however, a challenging task. Recently, p-multigrid methods have been considered [18], in which a multigrid hierarchy is constructed based on different approximation orders p instead of mesh widths h as it would be the case in classical h-multigrid schemes [8]. The use of an Incomplete LU-factorization as a smoother within the p-multigrid method has shown to lead to convergence rates independent of both h and p for single patch geometries [19]. In this paper, the focus lies on the application of the aforementioned p-multigrid method on multipatch geometries having a C0-continuous coupling between the patches. The use of ILUT as a smoother within p-multigrid methods leads to convergence rates that are essentially independent of h and p, but depend mildly on the number of patches.Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.Numerical Analysi
Going Beyond Counting First Authors in Author Co-citation Analysis
No full textThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Novel high performance poly(p-phenylene benzobisimidazole) (PBDI) membranes fabricated by interfacial polymerization for H 2 separation
No full text Membranes with high selectivity and permeance are needed to reduce energy consumption in hydrogen purification and pre-combustion CO 2 capture. Polybenzimidazole (PBI) is one of the leading membrane materials for this separation. In this study, we present superior novel supported PBI (poly(p-phenylene benzobisimidazole), PBDI) membranes prepared by a facile interfacial polymerization (IP) method. The effect of IP reaction duration, operating temperature and pressure on membrane separation performance was systematically investigated. The best performance was achieved for membranes prepared in a 2 h reaction time. The resulting membranes display an ultrahigh mixed-gas H 2 /CO 2 selectivity of 23 at 423 K together with an excellent H 2 permeance of 241 GPU, surpassing the membrane performance of conventional polymers (the 2008 Robeson upper bound). These separation results, together with the facile manufacture, pressure resistance, long-term thermostability (>200 h) and economic analysis, recommend the PBDI membranes for industrial use in H 2 purification and pre-combustion CO 2 capture. Besides, PBDI membranes possess high selectivities towards H 2 /N 2 (up to 60) and H 2 /CH 4 (up to 48) mixtures, indicating their potential applications in ammonia synthesis and syngas production. Accepted Author ManuscriptChemE/Catalysis EngineeringOLD ChemE/Organic Materials and InterfacesRST/Storage of Electrochemical Energ
Citations of the author H C Rajpoot
No full textThe list of the articles, research papers, theses, and book chapters globally citing the author H. C. Rajpoot</p
Outsourcing and Skill Imports: Foreign High-Skilled Workers on H-1B and L-1 Visas in the United States
No full textThis working paper looks in detail at the H-1B and L-1 visa programs for temporary employment in the United States. Based on official data from the US Citizenship and Immigration Services and the US Department of State, H-1B and L-1 visa issuance rapidly increased in the late 1990s, followed by a marked slowdown after 2001. This points to the highly cyclical nature of both visa programs. Indian nationals and immigrants working in computer-related occupations dominate the H1-B and L-1 population in the United States, but these two groups are also found to be the most cyclical segment, with very large declines in inflows after 2001. The total population of H-1B visaholders in 2003 is estimated to range between 387,000 and 746,000, of which 160,000 to 306,000 were Indian nationals. As all data on H-1B/L-1 visaholders are gross numbers and gross jobs data for comparable categories are absent, the extent of the impact of these visa programs on the US labor market cannot be gauged precisely. A broad range of US industries and educational institutions are found to be employing H-1B recipients, with the IT industry being the dominant sector. Evidence of aggressive wage-cost cutting, including paying H-1B recipients only the legally mandated 95 percent of the prevailing US wage, is found among some H-1B employers, although no systematic abuse of the system is present.Outsourcing, offshoring, high-skilled labor, immigration, H1B/L-1 visas
Fully Turbulent Mean Velocity Profile for Purely Viscous non-Newtonian Fluids
No full textThe characteristic near wall behavior of turbulent flow of purely-viscous non-Newtonian fluids is discussed for both power-law (P.-L.) and Herschel-Bulkley (H.-B.) rheological models. A proper scaling is presented for H.-B. fluids to establish an analogy with power-law fluids with same flow index. To provide reference data for turbulent flow of non-Newtonian fluids, DNS simulations of power-law fluids are conducted in a rectangular channel for a large range of power-law indices ( = 0.5, 0.69, 0.75, 0.9, 1, 1.2). The DNS data show that the mean velocity profile in the viscous and logarithmic layers follow expressions of the form and respectively, where shows a logarithmic dependency on the flow index.Comparison with some experimental data shows the above formulation to be valid for Reynolds numbers (based on shear velocity) as high as 1000
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