TECNOLOGIAS DE INFORMAÇÃO E COMUNICAÇÃO E SUAS IMPLICAÇÕES NA CONSTITUIÇÃO IDENTITÁRIA E NA PRÁTICA PEDAGÓGICA DE PROFESSORES DE LÍNGUA PORTUGUESA

Este artigo resulta de uma investigação acerca das possíveis implicações da crescente disseminação das Tecnologias da Informação e Comunicação (TIC) no que tange à constituição identitária docente e aos reflexos observáveis em seu fazer pedagógico. Mais especificamente, à luz de pressupostos concernentes a questões que envolvem a inclusão digital, além de estudos que contribuem para que se entenda a complexidade do conceito de identidade, investigaram-se indícios de mudanças identitárias de um grupo de professores de língua portuguesa, de escolas das redes pública e privada de ensino, aparentemente resultantes da necessidade da inserção das TIC no contexto escolar. A coleta de dados deu-se por meio de entrevistas que suscitaram nos professores a verbalização de aspectos pertinentes à sua formação e atuação profissional e à(s) imagem(ns) de si. Percebeu-se, em síntese, que os docentes investigados encontram-se divididos entre um discurso vigente (o professor precisa utilizar as TIC em sala de aula) e uma realidade que dificulta essa prática pedagógica

Aerosol-assisted fabrication of tin-doped indium oxide ceramic thin films from nanoparticle suspensions

Sn-doped In2O3 (ITO) thin films were fabricated on float glass substrates from a nanoparticle suspension using a new and inexpensive aerosol-assisted chemical transport (AACT) process. The influence of the solvent type, loading level and film deposition time on the structural, electrical and optical properties of the deposited thin films was investigated. In addition, the effect of the post-deposition heat-treatment of ITO films on the film resistivity and transparency was investigated using microwave radiation and compared with more conventional radiant heat-treated films. The SEM images of the films prepared using a 30 min deposition time with 0.20% (wt/vol%) methanolic ITO suspension provided better surface coverage compared to the other deposition times investigated. The optimised ITO films were heat-treated after deposition by either conventional radiant or microwave assisted heating methods in order to improve the inter-particle connections and film adherence. The films heat-treated after deposition by microwave annealing exhibited an average transmittance of >85% in the visible region with a resistivity of 12 Ω cm and a carrier concentration of −3.7 × 1016 cm3, which were superior to films that were heat-treated using more conventional thermal processing (despite the shorter processing time for the microwave process). The resistivity of ITO films was further decreased to 6.0 × 10−2 Ω cm with an increased carrier concentration of −8.0 × 1018 cm3 when ethyl cellulose was added to the ITO suspension prior to the AACT deposition. The enhanced conductivity of this film is due to the improved particle–particle and particle–substrate connections as observed by SEM imaging

Alcohol use and misuse: What are the contributions of occupation and work organization conditions?

<p>Abstract</p> <p>Background</p> <p>This research examines the specific contribution of occupation and work organization conditions to alcohol use and misuse. It is based on a social-action model that takes into account agent personality, structures of daily life, and macro social structures.</p> <p>Methods</p> <p>Data come from a representative sample of 10,155 workers in Quebec, Canada. Multinomial regression models corrected for sample design effect have been used to predict low-risk and high-risk drinking compared to non-drinkers. The contribution of occupation and work organization conditions (skill used, decision authority, physical and psychological demands, hours worked, irregular work schedule, harassment, unionization, job insecurity, performance pay, prestige) have been adjusted for family situation, social network outside the workplace, and individual characteristics.</p> <p>Results</p> <p>Compared to non-qualified blue-collars, both low-risk and high-risk drinking are associated with qualified blue-collars, semi-qualified white-collars, and middle managers; high-risk drinking is associated with upper managers. For constraints-resources related to work organization conditions, only workplace harassment is an important determinant of both low-risk and high-risk drinking, but it is modestly moderated by occupation. Family situation, social support outside work, and personal characteristics of individuals are also associated with alcohol use and misuse. Non-work factors mediated/suppressed the role of occupation and work organization conditions.</p> <p>Conclusion</p> <p>Occupation and workplace harassment are important factors associated with alcohol use and misuse. The results support the theoretical model conceptualizing alcohol use and misuse as being the product of stress caused by constraints and resources brought to bear simultaneously by agent personality, structures of daily life, and macro social structures. Occupational alcohol researchers must expand their theoretical perspectives to avoid erroneous conclusions about the specific role of the workplace.</p

CONTRIBUIÇÕES DAS AULAS DE EDUCAÇÃO FÍSICA NA FORMAÇÃO DO/A ESTUDANTE DE ENSINO MÉDIO INTEGRADO

This study sought to understand the objectives of Physical Education teachers (PE) of the Instituto Federal Sul-rio-grandense in relation to students of Integrated High School (IHS). Semi-structured interviews were conducted with 13 teachers, who had between six and 15 years of working, in regular classes for the IHS, seven campuses of the institution. To understand and interpret the data, we approached the content analysis technique. From the analysis of the interviews, three categories were reached: development for citizenship; bodily experiences as well as experiences; quality of life and health. The results showed attention to the student's integral development; to the offer of several experiences of body culture, so that the student can identify with some of them and take them into his/her everyday life; to the development of motor skills involved in several body practices; to the promotion of classes that contribute to the improvement of life quality and to the awareness of the importance of keeping active. The objectives highlighted are related to each other, contributing effectively to the IHS student’s formation, reinforcing the importance of PE for this level of education.Este estudio buscó comprender los objetivos de los profesores de Educación Física (EF) del Instituto Federal Sul-rio-grandense con relación a los alumnos de la Enseñanza Secundaria Integrada (ESI). Fueron realizadas entrevistas semiestructuradas con 13 profesores de seis a 15 años en actuación, trabajando en clases regulares de siete campi de la institución. Para comprensión e interpretación de los datos, se aproximó de la técnica de análisis de contenido. A partir de las entrevistas, se llegó a tres categorías: desarrollo para la ciudadanía; vivencias y experiencias corporales; cualidad de vida y salud. Los resultados evidenciaron una atención dirigida: al desarrollo integral del/de la alumno/a; a la oferta de variadas vivencias de la cultura corporal, a fin de que el/la estudiante pueda identificarse con alguna y llevarla para su cotidiano; al desarrollo de habilidades motoras involucradas en diversas prácticas corporales; a la promoción de clases, que tanto contribuyan para a la mejora de la calidad de vida como para la concienciación en relación a la importancia de que se mantengan activos/as. Los objetivos resaltados se relacionan entre sí, contribuyendo de forma efectiva para la formación del estudiante de la ESI, reforzando la importancia de la EF para ese nivel.Este estudo buscou compreender os objetivos dos/as professores/as de Educação Física (EF) do Instituto Federal Sul-rio-grandense em relação aos/às alunos/as do Ensino Médio Integrado (EMI). Foram realizadas entrevistas semiestruturadas com 13 professores/as, entre seis e 15 anos em atuação, trabalhando em aulas regulares para o EMI, de sete campi da instituição. Para compreensão e interpretação dos dados, aproximou-se da técnica de análise de conteúdo. A partir da análise das entrevistas, chegou-se a três categorias: desenvolvimento para a cidadania; vivências e experiências corporais; qualidade de vida e saúde. Os resultados evidenciaram uma atenção voltada ao desenvolvimento integral do/a aluno/a; à oferta de variadas vivências da cultura corporal, a fim de que o/a estudante possa identificar-se com alguma e levá-la para o seu cotidiano; ao desenvolvimento de habilidades motoras envolvidas em diversas práticas corporais; à promoção de aulas, que tanto contribuam para a melhora da qualidade vida quanto para a conscientização em relação à importância de se manterem ativos/as. Os objetivos destacados relacionam-se entre si, contribuindo de forma efetiva para a formação do/a estudante do EMI, reforçando a importância da EF para esse nível de ensino

Movement and habitat use of the snapping turtle in an urban landscape

In order to effectively manage urban habitats, it is important to incorporate the spatial ecology and habitat use of the species utilizing them. Our previous studies have shown that the distribution of upland habitats surrounding a highly urbanized wetland habitat, the Central Canal (Indianapolis, IN, USA) influences the distribution of map turtles (Graptemys geographica) and red-eared sliders (Trachemys scripta) during both the active season and hibernation. In this study we detail the movements and habitat use of another prominent member of the Central Canal turtle assemblage, the common snapping turtle, Chelydra serpentina. We find the same major upland habitat associations for C. serpentina as for G. geographica and T. scripta, despite major differences in their activity (e.g., C. serpentina do not regularly engage in aerial basking). These results reinforce the importance of recognizing the connection between aquatic and surrounding terrestrial habitats, especially in urban ecosystems

The malaria candidate vaccine liver stage antigen-3 is highly conserved in Plasmodium falciparum isolates from diverse geographical areas

<p>Abstract</p> <p>Background</p> <p>A high level of genetic stability has been formerly identified in segments of the gene coding for the liver stage antigen-3 (LSA-3), a subunit vaccine candidate against <it>Plasmodium falciparum</it>. The exploration of <it>lsa-3 </it>polymorphisms was extended to the whole sequence of this large antigen in 20 clinical isolates from four geographical areas; Senegal, Comoro islands, Brazil and Thailand.</p> <p>Methods</p> <p>The whole 4680 bp genomic sequence of <it>lsa-3 </it>was amplified by polymerase chain reaction and sequenced. The clinical isolate sequences were aligned on the sequence of the laboratory reference <it>P. falciparum </it>strain 3D7.</p> <p>Results</p> <p>The non-repeated sequence of <it>lsa-3 </it>was very well conserved with only a few allelic variations scattered along the sequence. Interestingly, a formerly identified immunodominant region, employed for the majority of pre-clinical vaccine development, was totally conserved at the genetic level. The most significant variations observed were in the number and organization of tetrapeptide repeated units, but not in their composition, resulting in different lengths of these repeated regions. The shorter repeated regions were from Brazilian origin. A correlation between the geographical distribution of the parasites with single nucleotide polymorphisms was not detected.</p> <p>Conclusion</p> <p>The lack of correlation between allelic polymorphisms with a specific transmission pressure suggests that LSA-3 is a structurally constrained molecule. The unusual characteristics of the <it>lsa-3 </it>gene make the molecule an interesting candidate for a subunit vaccine against malaria.</p

Jet energy measurement with the ATLAS detector in proton-proton collisions at root s=7 TeV

The jet energy scale and its systematic uncertainty are determined for jets measured with the ATLAS detector at the LHC in proton-proton collision data at a centre-of-mass energy of √s = 7TeV corresponding to an integrated luminosity of 38 pb-1. Jets are reconstructed with the anti-kt algorithm with distance parameters R=0. 4 or R=0. 6. Jet energy and angle corrections are determined from Monte Carlo simulations to calibrate jets with transverse momenta pT≥20 GeV and pseudorapidities {pipe}η{pipe}<4. 5. The jet energy systematic uncertainty is estimated using the single isolated hadron response measured in situ and in test-beams, exploiting the transverse momentum balance between central and forward jets in events with dijet topologies and studying systematic variations in Monte Carlo simulations. The jet energy uncertainty is less than 2. 5 % in the central calorimeter region ({pipe}η{pipe}<0. 8) for jets with 60≤pT<800 GeV, and is maximally 14 % for pT<30 GeV in the most forward region 3. 2≤{pipe}η{pipe}<4. 5. The jet energy is validated for jet transverse momenta up to 1 TeV to the level of a few percent using several in situ techniques by comparing a well-known reference such as the recoiling photon pT, the sum of the transverse momenta of tracks associated to the jet, or a system of low-pT jets recoiling against a high-pT jet. More sophisticated jet calibration schemes are presented based on calorimeter cell energy density weighting or hadronic properties of jets, aiming for an improved jet energy resolution and a reduced flavour dependence of the jet response. The systematic uncertainty of the jet energy determined from a combination of in situ techniques is consistent with the one derived from single hadron response measurements over a wide kinematic range. The nominal corrections and uncertainties are derived for isolated jets in an inclusive sample of high-pT jets. Special cases such as event topologies with close-by jets, or selections of samples with an enhanced content of jets originating from light quarks, heavy quarks or gluons are also discussed and the corresponding uncertainties are determined. © 2013 CERN for the benefit of the ATLAS collaboration

Observation of associated near-side and away-side long-range correlations in √sNN=5.02 TeV proton-lead collisions with the ATLAS detector

Two-particle correlations in relative azimuthal angle (Δϕ) and pseudorapidity (Δη) are measured in √sNN=5.02  TeV p+Pb collisions using the ATLAS detector at the LHC. The measurements are performed using approximately 1  μb-1 of data as a function of transverse momentum (pT) and the transverse energy (ΣETPb) summed over 3.1<η<4.9 in the direction of the Pb beam. The correlation function, constructed from charged particles, exhibits a long-range (2<|Δη|<5) “near-side” (Δϕ∼0) correlation that grows rapidly with increasing ΣETPb. A long-range “away-side” (Δϕ∼π) correlation, obtained by subtracting the expected contributions from recoiling dijets and other sources estimated using events with small ΣETPb, is found to match the near-side correlation in magnitude, shape (in Δη and Δϕ) and ΣETPb dependence. The resultant Δϕ correlation is approximately symmetric about π/2, and is consistent with a dominant cos⁡2Δϕ modulation for all ΣETPb ranges and particle pT