A produção de texto na Era Enem: subjetividade e autoria no contexto político-pedagógico brasileiro contemporâneo

RESUMO Este trabalho traz resultados obtidos em pesquisa em nível de mestrado a respeito do lugar da subjetividade e da autoria na produção de textos no contexto da prova de redação do Enem, debatendo, concomitantemente, as perspectivas institucionais a respeito da linguagem e da produção de textos na contemporaneidade. Para tal, a pesquisa conta com uma análise documental da Base Nacional Comum Curricular (doravante BNCC), especificamente no que diz respeito à visão institucional sobre a linguagem no Ensino Médio e suas perspectivas curriculares para com essa esfera. Em diálogo com essa análise, o trabalho também conta com um estudo acerca da subjetividade e autoria em redações que obtiveram nota 1000 no Exame Nacional do Ensino Médio (Enem), a fim de se averiguar que autores são, de fato, vistos como modelos para o Enem, que é uma realidade do Ensino Médio brasileiro, e se esse panorama é passível de problematização. Ainda, o trabalho traz a proposta de colocar as proposições da BNCC em diálogo com os resultados obtidos do estudo das redações nota 1000, com vistas a discutir de que formas a prática textual tem se dado na contemporaneidade. Dessa forma, o trabalho guia-se pelos estudos em políticas linguísticas (RIBEIRO DA SILVA, 2013; AFONSO, 1998), que muito contribuem para a análise da BNCC; e pelas perspectivas de autoria de Bakhtin (1992 [2011]), Barthes (1984) e Foucault (1969), e de identidade, de Hall (1998), para a análise das redações nota 1000. Além disso, o trabalho é constantemente atravessado por vozes de demais autores que se engajam nas discussões em Linguística Aplicada (STREET, 1984; KLEIMAN, 2007; ROJO, 2009; VIDON, 2016; MENDES, 2013; et ali). Este estudo tem metodologia qualitativa, de base indiciária (GINZBURG, 1986), em que os resultados são observados em plano dialógico como componentes que instiguem constantemente novas problematizações. PALAVRAS-CHAVE: Enem. BNCC. Produção de Textos. Subjetividade. Autoria

Un caso de queratoma en el casco de un caballo

Los queratomas del casco, son procesos neoplásicos benignos, poco frecuentes, de origen epitelial y que se desarrollan a partir de células productoras de queratina, localizadas en la pared del casco. Normalmente estos procesos están relacionados con una historia previa de claudicación intermitente. En este trabajo describimos las características clínicas, macroscópicas e histopatológicas de un queratoma en el casco de un caballo con una historia clínica de cojera crónica. El animal presentaba una deformación en la ranilla del casco debido a la presencia de una masa localizada en la unión de la banda coronaria con la línea blanca. El estudio histopatológico mostró la presencia de una proliferación neoplásica integrada por células epiteliales con formación de múltiples capas de queratinaKeratomas are uncommon benign neoplasms of the horse hoof with epithelial origin, which are developed from keratin-producing squamous cells of the hoof wall. Normally these processes are related to a previous history of intermittent lameness. Clinical, macroscopic and histopathologic features of a keratoma in the hoof of a horse with a clinical history of chronic lameness are described in this paper. The animal showed a deformity of the hoof frog due to the presence of a mass located at the junction of the coronary band with the white line. A neoplasic proliferation was observed at the histopathologic examination, consisting of epithelial cells and several layers of keratin

Dielectron Cross Section Measurements in Nucleus-Nucleus Reactions at 1.0 A GeV

We present measured dielectron production cross sections for Ca+Ca, C+C, He+Ca, and d+Ca reactions at 1.0 A GeV. Statistical uncertainties and systematic effects are smaller than in previous DLS nucleus-nucleus data. For pair mass < 0.35 GeV/c2 : 1) the Ca+Ca cross section is larger than the previous DLS measurement and current model results, 2) the mass spectra suggest large contributions from pi0 and eta Dalitz decays, and 3) dsigma/dM is proportional to ApAt. For M > 0.5 GeV/c2 the Ca+Ca to C+C cross section ratio is significantly larger than the ratio of ApAt values.Comment: Submitted to Physical Review Letters. Further analysis information will be posted on our web pages -- http://macdls.lbl.gov Figure 1 has been redrawn to make more legible. Text modified to support redrawn figur

A Statistical Inference Method for Interpreting the CLASP Observations

On 3rd September 2015, the Chromospheric Lyman-Alpha SpectroPolarimeter (CLASP) successfully measured the linear polarization produced by scattering processes in the hydrogen Lyman-$\alpha$ line of the solar disk radiation, revealing conspicuous spatial variations in the $Q/I$ and $U/I$ signals. Via the Hanle effect the line-center $Q/I$ and $U/I$ amplitudes encode information on the magnetic field of the chromosphere-corona transition region (TR), but they are also sensitive to the three-dimensional structure of this corrugated interface region. With the help of a simple line formation model, here we propose a statistical inference method for interpreting the Lyman-$\alpha$ line-center polarization observed by CLASP.Comment: Accepted for publication in The Astrophysical Journa

CLASP Constraints on the Magnetization and Geometrical Complexity of the Chromosphere-Corona Transition Region

The Chromospheric Lyman-Alpha Spectro-Polarimeter (CLASP) is a suborbital rocket experiment that on 3rd September 2015 measured the linear polarization produced by scattering processes in the hydrogen Ly-$\alpha$ line of the solar disk radiation, whose line-center photons stem from the chromosphere-corona transition region (TR). These unprecedented spectropolarimetric observations revealed an interesting surprise, namely that there is practically no center-to-limb variation (CLV) in the $Q/I$ line-center signals. Using an analytical model, we first show that the geometrical complexity of the corrugated surface that delineates the TR has a crucial impact on the CLV of the $Q/I$ and $U/I$ line-center signals. Secondly, we introduce a statistical description of the solar atmosphere based on a three-dimensional (3D) model derived from a state-of-the-art radiation magneto-hydrodynamic simulation. Each realization of the statistical ensemble is a 3D model characterized by a given degree of magnetization and corrugation of the TR, and for each such realization we solve the full 3D radiative transfer problem taking into account the impact of the CLASP instrument degradation on the calculated polarization signals. Finally, we apply the statistical inference method presented in a previous paper to show that the TR of the 3D model that produces the best agreement with the CLASP observations has a relatively weak magnetic field and a relatively high degree of corrugation. We emphasize that a suitable way to validate or refute numerical models of the upper solar chromosphere is by confronting calculations and observations of the scattering polarization in ultraviolet lines sensitive to the Hanle effect.Comment: Accepted for publication in The Astrophysical Journal Letter

First results from the NA60 experiment at CERN

Since 1986, several heavy ion experiments have studied some signatures of the formation of the quark-gluon plasma and a few exciting results have been found. However, some important questions are still unanswered and require new measurements. The NA60 experiment, with a new detector concept that vastly improves dimuon detection in proton-nucleus and heavy-ion collisions, studies several of those open questions, including the production of open charm. This paper presents the experiment and some first results from data collected in 2002.Comment: Paper presented at the XXXVIII Rencontres de Moriond, QCD and High Energy Hadronic Interactions, Les Arcs, March 22-29, 2003. 4 pages, 6 figure

Atmospheric electrical field decrease during the M = 4.1 Sousel earthquake (Portugal)

Abstract. In this paper, we report the observation of a significant decrease of the vertical component of the atmospheric electrical field in the Évora region (Portugal) during the M = 4.1 Sousel earthquake of 27 March 2010. The epicentre of the earthquake was 52 km from the observation site, which falls within the theoretical earthquake preparation radius. A simple interpretation based on hypothetical radon emissions is presented, and future experiments required to elucidate these observations are outlined. To our knowledge, this is the first reported observation of a decrease of the atmospheric electrical field preceding an earthquake

Study of dimuon production in Indium-Indium collisions with the NA60 experiment

The NA60 experiment at the CERN-SPS is devoted to the study of dimuon production in heavy-ion and proton-nucleus collisions. We present preliminary results from the analysis of Indium-Indium collisions at 158 GeV per nucleon. The topics covered are low mass vector meson production, J/psi production and suppression, and the feasibility of the open charm measurement from the dimuon continuum in the mass range below the J/psi peak.Comment: Contribution at XXXXth Rencontres de Moriond, "QCD and High Energy Hadronic Interactions