Trazendo à baila a voz que fomenta pesquisas em linguagem: uma análise crítica do discurso do professor-orientador através do Sistema de Transitividade

A Nova Lei de Diretrizes e Bases da Educação Brasileira (LDB 9.394/96) prevê que a educação superior promova criticidade, reflexibilidade, correlação de saberes, mas também o incentivo ao trabalho de pesquisa e investigação científica, visando ao desenvolvimento da ciência e da tecnologia e da criação e difusão da cultura e, desse modo, desenvolver o entendimento do homem e do meio em que vive. (Artigo 43, inciso III). Entretanto, pouco se ouve sobre essas questões a partir da voz do orientador de pesquisas acadêmicas, o que esta pesquisadora considera um problema de ordem social, tendo em vista a importância desses atores sociais para o campo acadêmico. Os poucos trabalhos que abordam o tema limitam-se a identificar o orientador a partir das impressões empíricas dos orientandos e a refletir as atuações a partir de questões político-educacionais (FLECHA, 2003; MAZZILLI, 2003; BIANCHETTI & MACHADO, 2006). Neste sentido, o presente trabalho procura responder, através da Análise Crítica do Discurso (ACD), o que os orientadores têm a dizer sobre sua prática social. De caráter interpretativo (ALVEZ-MAZZOTTI, 1999), conta com dados gerados por orientadores de mestrado em Linguística/Linguística Aplicada, das esferas federal, estadual e privada, do Rio de janeiro, sendo dois participantes de cada esfera. Na primeira etapa, os sujeitos responderam a uma entrevista semiestruturada. A segunda etapa consta de: a) um questionário; b) correspondências eletrônicas; c) os regimentos dos programas de pós-graduação; e d) revisão histórica da orientação no Brasil. O caráter social deste estudo é a relação dialética entre linguagem e sociedade, já que a ACD considera qualquer evento discursivo ao mesmo tempo um texto (primeira dimensão), uma prática discursiva (segunda dimensão) e uma prática social (terceira dimensão): o modelo tridimensional (FAIRCLOUGH, 2001). O Sistema de Transitividade da LSF pautou a análise da primeira dimensão, confirmando outros estudos sobre o ranking da recorrência dos processos (LIMA LOPES, 2001). A interpretação dessa primeira dimensão aponta que os orientadores atuam na idiossincrasia, e que os principais atores sociais desse fazer são o orientador e o orientando, em relação assimétrica de poder. Na segunda dimensão, a interdiscursividade reforça essa idiossincrasia, mas inclui as pressões institucionais, que agem como reguladoras desse fazer. Na terceira dimensão, os resultados sugerem que aspectos históricos justificam a queda da qualidade dos mestrandos, associando a isso um interesse político, e as características da pós-modernidade a uma nova e híbrida atuação. Além disso, os resultados apontam para um discurso de resistência à hegemonia nas três dimensões de análise. A pesquisa possibilitou ainda a discussão em torno de aspectos práticos: a) a reflexão dos sujeitos sobre seus papeis e atribuições; e b) a atualização do aporte teórico, aplicado a um tema ainda pouco explorado. Deste trabalho, fica um convite a novas pesquisas sobre o discurso do orientador, trazendo à tona não apenas sua voz, conforme a fala literal de um dos entrevistados, mas também contribuições diretas e significativas aos estudos em Linguística e Linguística Aplicada no Brasil

Radio-aware service-level scheduling to minimize downlink traffic delay through Mobile Edge Computing

One of the most challenging problems in mobile broadband networks is how to assign the available radio resources among the different mobile users. Traditionally, research proposals are either speci c to some type of traffic or deal with computationally intensive algorithms aimed at optimizing the delivery of general purpose traffic. Consequently, commercial networks do not incorporate these mechanisms due to the limited hardware resources at the mobile edge. Emerging 5G architectures introduce cloud computing principles to add flexible computational resources to Radio Access Networks. This paper makes use of the Mobile Edge Computing concepts to introduce a new element, denoted as Mobile Edge Scheduler, aimed at minimizing the mean delay of general traffic flows in the LTE downlink. This element runs close to the eNodeB element and implements a novel flow-aware and channel-aware scheduling policy in order to accommodate the transmissions to the available channel quality of end users.

A feasible approach to optical-electrical hybrid data storage using phase change material

We present our experimental results supporting optical-electrical hybrid data storage by optical recording and electrical reading using Ge2Sb2Te5as recording medium. The sheet resistance of laser- irradiated Ge2Sb2Te5. lms exhibits an abrupt change of four orders of magnitude ( from 10 7 to 10 3./ sq) with increasing laser power, current- voltage curves of the amorphous area and the laser- crystallized dots, measured by a conductive atomic force microscope ( C- AFM), show that their resistivities are 2.725 and 3.375 x 10- 3., respectively, the surface current distribution in the. lms also shows high and low resistance states. All these results suggest that the laser- recorded bit can be read electrically by measuring the change of electrical resistivity, thus making optical electrical hybrid data storage possible.

A planar waveguide Nd : YAG laser using active Q-switching of a hybrid unstable resonator

A planar waveguide laser operating in a negative branch unstable resonator is Q-switched by an acoustooptic mod latorin anew configuration, providing effective, high-speed switching. The laser using a 200-mu m Nd:YAG core, face pumped by 10 laser diode bars, has produced 100-W output in a good beam quality at 100-kHz pulse rate, and 4.5 mJ at lower frequency with 15-ns pulse duration.

Never-resting microglia: physiological roles in the healthy brain and pathological implications

Microglia are largely known as the major orchestrators of the brain inflammatory response. As such, they have been traditionally studied in various contexts of disease, where their activation has been assumed to induce a wide range of detrimental effects. In the last few years, a series of discoveries have challenged the current view of microglia, showing their active and positive contribution to normal brain function. This Research Topic will review the novel physiological roles of microglia in the developing, mature and aging brain, under non-pathological conditions. In particular, this Research Topic will discuss the cellular and molecular mechanisms by which microglia contribute to the formation, pruning and plasticity of synapses; the maintenance of the blood brain barrier; the regulation of adult neurogenesis and hippocampal learning; and neuronal survival, among other important roles. Because these novel findings defy our understanding of microglial function in health as much as in disease, this Research Topic will also summarize the current view of microglial nomenclature, phenotypes, origin and differentiation, sex differences, and contribution to various brain pathologies. Additionally, novel imaging approaches and molecular tools to study microglia in their non-activated state will be discussed. In conclusion, this Research Topic seeks to emphasize how the current research in neuroscience is challenged by never-resting microglia.

Design and implementation of a cloud computing adoption decision tool: Generating a cloud road

Migrating to cloud computing is one of the current enterprise challenges. This technology provides a new paradigm based on "on-demand payment" for information and communication technologies. In this sense, the small and medium enterprise is supposed to be the most interested, since initial investments are avoided and the technology allows gradual implementation. However, even if the characteristics and capacities have been widely discussed, entry into the cloud is still lacking in terms of practical, real frameworks. This paper aims at filling this gap, presenting a real tool already implemented and tested, which can be used as a cloud computing adoption decision tool. This tool uses diagnosis based on specific questions to gather the required information and subsequently provide the user with valuable information to deploy the business within the cloud, specifically in the form of Software as a Service (SaaS) solutions. This information allows the decision makers to generate their particular Cloud Road. A pilot study has been carried out with enterprises at a local level with a two-fold objective: To ascertain the degree of knowledge on cloud computing and to identify the most interesting business areas and their related tools for this technology. As expected, the results show high interest and low knowledge on this subject and the tool presented aims to readdress this mismatch, insofar as possible. Copyright: © 2015 Bildosola et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

Mode properties of off-axis one-sided hybrid resonator for novel high average power dual-slab laser

A novel dual-slab laser with off-axis one-sided hybrid resonator is presented. The mode properties of the hybrid resonator are calculated using a fast Fourier transform method (FFT). The influence of wavefront distoration on the output beam quality is considered. Results indicate that the novel dual-slab laser is better than the normal dual-slab laser with off-axis one-sided hybrid resonator.

Coincidence and common fixed point theorems for Suzuki type hybrid contractions and applications

Coincidence and common fixed point theorems for a class of Suzuki hybrid contractions involving two pairs of single-valued and multivalued maps in a metric space are obtained. In addition, the existence of a common solution for a certain class of functional equations arising in a dynamic programming is also discussed.

Contributions to High-Throughput Computing Based on the Peer-to-Peer Paradigm

XII, 116 p.

Optical and surface properties of hybrid TiO2/ormosil planar waveguide prepared by the sol-gel process

Two kinds of silanes, 3-glycidoxypropyltrimethoxysilane (GLYMO) and 3-trimethoxysililpropylmethacrylate (TMSPM), were used to prepare ormosil waveguide films by the sol-gel method. Thirty percent Ti(OBu)(4) and 70% silane were contained in the precursor sets. The properties of films were measured by scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR), UV/VIS/NIR spectrophotometer (UV-vis), atomic force microscopy (AFM), m-line and scattering-detection method. The films from GLYMO and TMSPM precursors exhibit similar thickness (2.58 mu m for GLYMO, 2.51 mu m for TMSPM) and refractive index (1.5438 for GLYMO, 1.5392 for TMSPM, lambda=632.8 nm), but the film from TMSPM precursor has higher propagation loss (1.024 dB/cm, lambda=632.8 nm) than the film prepared from GLYMO (0.569 dB/cm, lambda=632.8 nm). Furthermore, the film prepared from TMSPM is easy to be opaque and cracks during coating whereas the same phenomenon was not found for the film prepared with GLYMO. It is confirmed that GLYMO is a better precursor than TMSPM for waveguide film preparation. (C) 2005 Elsevier Ltd and Techna Group S.r.l. All rights reserved.

Effect of water content in sol on optical properties of hybrid sol-gel derived TiO2/SiO2/ormosil film

Sol-gel derived TiO2/SiO2/ormosil hybrid planar waveguides have been deposited on soda-lime glass slides and silicon substrates, films were heat treated at 150 degreesC for 2 h or dried at room temperature. Different amounts of water were added to sols to study their impacts on microstructures and optical properties of films. The samples were characterized by m-line spectroscopy, Fourier transform infrared spectroscopy (FT-IR), UV/VIS/NIR spectrophotometer (UV-vis), atomic force microscopy (AFM), thermal analysis instrument and scattering-detection method. The refractive index was found to have the largest value at the molar ratio H2O/OR = 1 in sol (OR means -OCH3, -OC2H5 and -OC4H9 in the sol), whereas the thickest film appears at H2O/OR = 1/2. The rms surface roughness of all the films is lower than 1.1 nm, and increases with the increase of water content in sol. Higher water content leads to higher attenuation of film. (C) 2004 Elsevier B.V. All rights reserved.