746 research outputs found

    Alargar os Horizontes: uma Análise sobre o Projeto Nosso Nordeste, Nosso Lugar de Fala: Articulando Resistências e Propondo uma Educação Popular

    Get PDF
    DISSERTAÇÃO APRESENTADA AO PROGRAMA DE PÓS-GRADUAÇÃO INTERDISCIPLINAR EM ESTUDOS LATINO-AMERICANOS (IELA)Esta dissertação teve como objetivo principal analisar os caminhos que viabilizaram os processos de mapeamento das experiências de resistência através das ações do projeto Nosso Nordeste, Nosso Lugar de Fala: Articulando Resistências e Propondo uma Educação Popular, e os objetivos específicos planejados diante da problemática da pesquisa foram: coletar o mapeamento das experiências de resistência no Nordeste brasileiro, feito pelo projeto em questão; refletir sobre a construção social do Nordeste como uma região em disputa a partir das experiências de resistências mapeadas; e analisar os resultados, limites e possibilidades do processo de mapeamento. Para isso, foi necessário debater alguns elementos históricos em torno da educação popular e do Nordeste. Metodologicamente a discussão está pautada desde as perspectivas da pesquisa-ação sobre o projeto em questão, a partir da ação de mapear e dos seus processos e resultados. De modo que esse mapeamento resultou num total de 109 experiências de resistências no Nordeste, localizadas nos estados de Bahia, Ceará, Paraíba, Pernambuco, Rio Grande do Norte e Sergipe. Dentre estas, 24 participaram diretamente do projeto Nosso Nordeste, Nosso Lugar de Fala (N.N.) e elaboraram Planos de Formação a partir das suas experiências. As análises sobre esse processo de mapeamento foram feitas a partir de um Diário de Campo e os seus resultados evidenciaram contribuições para a educação popular e para a compreensão sobre esse Nordeste como um espaço em movimento e tensionamento da história hegemônica que tenta nos nor-destinar. E as análises em torno da educação popular oriundas do mapeamento ressaltaram o caráter diverso que ela possui por existir em constante diálogo com o movimento da realidade e suas demandas de tensionamento, colocando em destaque, ainda, a necessidade de valorização das dimensões ancestrais da educação popular. Ademais, as análises em torno das possibilidades desenvolvidas pelo mapeamento e, logo, pelo Projeto N.N., sinalizaram a necessidade de que as atuações de enfrentamento das opressões diversas precisam partir de coalizões de forças com experiências de resistências distintas, e que se leve em consideração as contribuições da interseccionalidade para compreender e atuar diante múltiplas formas de opressão sem necessidade de hierarquização destas

    Rompendo o Cerco: educAção por toda parte

    Get PDF
    Participantes: Andréia Araújo da Nóbrega; Andressa Gregório; Antônio Jorge Andrade; Carlê Rodrigues; Cristiane Oliveira; Diego Francisco Ferraz; Elaíne Apolinário dos Santos; Francisco Raule de Sousa; Gabriella Moreira Bezerra Lima; João Víctor Gomes de Oliveira; Jobson Nery Fernandes de Lima; Jonas Mateus Ferreira Araujo; José Cirilo da Silva Neto; Josefina de Fátima Tranquilin Silva; Juarez Egildo; Keile Pinheiro; Maria do Socorro Pinheiro; Maurício dos Santos; Messias Pinheiro; Michel Prudêncio; Michelle Maciel; Monique Cordeiro; Pedro Walisson Gomes Feitosa; Rainara Maia; Sally de França Lacerda Pinheiro; Teógenes Eufrasio Bezerra; Thiago Nogueira, Wanessa Maria Costa Cavalcante Brandão.“Rompemos o cerco” é uma obra que busca dialogar com os processos de resistência no Nordeste. Faz referência às ofensivas dos poderes contra as formas de resistência, com as quais iniciam um método chamado "cerco", consistindo em cercar o inimigo e silenciá-lo. Na obra, esse cerco já foi quebrado, os personagens estão passando à ação. Ainda, busca-se fugir da imagem do Nordeste como um lugar de seca e de sofrimento, procurando retratar a sua diversidade cultural e territorial.Livro financiado com recursos do PROAP-UNILA

    Pervasive gaps in Amazonian ecological research

    Get PDF
    Biodiversity loss is one of the main challenges of our time,1,2 and attempts to address it require a clear un derstanding of how ecological communities respond to environmental change across time and space.3,4 While the increasing availability of global databases on ecological communities has advanced our knowledge of biodiversity sensitivity to environmental changes,5–7 vast areas of the tropics remain understudied.8–11 In the American tropics, Amazonia stands out as the world’s most diverse rainforest and the primary source of Neotropical biodiversity,12 but it remains among the least known forests in America and is often underrepre sented in biodiversity databases.13–15 To worsen this situation, human-induced modifications16,17 may elim inate pieces of the Amazon’s biodiversity puzzle before we can use them to understand how ecological com munities are responding. To increase generalization and applicability of biodiversity knowledge,18,19 it is thus crucial to reduce biases in ecological research, particularly in regions projected to face the most pronounced environmental changes. We integrate ecological community metadata of 7,694 sampling sites for multiple or ganism groups in a machine learning model framework to map the research probability across the Brazilian Amazonia, while identifying the region’s vulnerability to environmental change. 15%–18% of the most ne glected areas in ecological research are expected to experience severe climate or land use changes by 2050. This means that unless we take immediate action, we will not be able to establish their current status, much less monitor how it is changing and what is being lostinfo:eu-repo/semantics/publishedVersio

    Pervasive gaps in Amazonian ecological research

    Get PDF

    Photography-based taxonomy is inadequate, unnecessary, and potentially harmful for biological sciences

    Get PDF
    The question whether taxonomic descriptions naming new animal species without type specimen(s) deposited in collections should be accepted for publication by scientific journals and allowed by the Code has already been discussed in Zootaxa (Dubois & Nemésio 2007; Donegan 2008, 2009; Nemésio 2009a–b; Dubois 2009; Gentile & Snell 2009; Minelli 2009; Cianferoni & Bartolozzi 2016; Amorim et al. 2016). This question was again raised in a letter supported by 35 signatories published in the journal Nature (Pape et al. 2016) on 15 September 2016. On 25 September 2016, the following rebuttal (strictly limited to 300 words as per the editorial rules of Nature) was submitted to Nature, which on 18 October 2016 refused to publish it. As we think this problem is a very important one for zoological taxonomy, this text is published here exactly as submitted to Nature, followed by the list of the 493 taxonomists and collection-based researchers who signed it in the short time span from 20 September to 6 October 2016

    Search for new particles in events with energetic jets and large missing transverse momentum in proton-proton collisions at root s=13 TeV

    Get PDF
    A search is presented for new particles produced at the LHC in proton-proton collisions at root s = 13 TeV, using events with energetic jets and large missing transverse momentum. The analysis is based on a data sample corresponding to an integrated luminosity of 101 fb(-1), collected in 2017-2018 with the CMS detector. Machine learning techniques are used to define separate categories for events with narrow jets from initial-state radiation and events with large-radius jets consistent with a hadronic decay of a W or Z boson. A statistical combination is made with an earlier search based on a data sample of 36 fb(-1), collected in 2016. No significant excess of events is observed with respect to the standard model background expectation determined from control samples in data. The results are interpreted in terms of limits on the branching fraction of an invisible decay of the Higgs boson, as well as constraints on simplified models of dark matter, on first-generation scalar leptoquarks decaying to quarks and neutrinos, and on models with large extra dimensions. Several of the new limits, specifically for spin-1 dark matter mediators, pseudoscalar mediators, colored mediators, and leptoquarks, are the most restrictive to date.Peer reviewe

    Combined searches for the production of supersymmetric top quark partners in proton-proton collisions at root s=13 TeV

    Get PDF
    A combination of searches for top squark pair production using proton-proton collision data at a center-of-mass energy of 13 TeV at the CERN LHC, corresponding to an integrated luminosity of 137 fb(-1) collected by the CMS experiment, is presented. Signatures with at least 2 jets and large missing transverse momentum are categorized into events with 0, 1, or 2 leptons. New results for regions of parameter space where the kinematical properties of top squark pair production and top quark pair production are very similar are presented. Depending on themodel, the combined result excludes a top squarkmass up to 1325 GeV for amassless neutralino, and a neutralinomass up to 700 GeV for a top squarkmass of 1150 GeV. Top squarks with masses from 145 to 295 GeV, for neutralino masses from 0 to 100 GeV, with a mass difference between the top squark and the neutralino in a window of 30 GeV around the mass of the top quark, are excluded for the first time with CMS data. The results of theses searches are also interpreted in an alternative signal model of dark matter production via a spin-0 mediator in association with a top quark pair. Upper limits are set on the cross section for mediator particle masses of up to 420 GeV

    Probing effective field theory operators in the associated production of top quarks with a Z boson in multilepton final states at root s=13 TeV

    Get PDF
    Peer reviewe

    Measurements of Higgs boson production cross sections and couplings in the diphoton decay channel at root s=13 TeV

    Get PDF
    Measurements of Higgs boson production cross sections and couplings in events where the Higgs boson decays into a pair of photons are reported. Events are selected from a sample of proton-proton collisions at root s = 13TeV collected by the CMS detector at the LHC from 2016 to 2018, corresponding to an integrated luminosity of 137 fb(-1). Analysis categories enriched in Higgs boson events produced via gluon fusion, vector boson fusion, vector boson associated production, and production associated with top quarks are constructed. The total Higgs boson signal strength, relative to the standard model (SM) prediction, is measured to be 1.12 +/- 0.09. Other properties of the Higgs boson are measured, including SM signal strength modifiers, production cross sections, and its couplings to other particles. These include the most precise measurements of gluon fusion and vector boson fusion Higgs boson production in several different kinematic regions, the first measurement of Higgs boson production in association with a top quark pair in five regions of the Higgs boson transverse momentum, and an upper limit on the rate of Higgs boson production in association with a single top quark. All results are found to be in agreement with the SM expectations.Peer reviewe

    Observation of tW production in the single-lepton channel in pp collisions at root s=13 TeV

    Get PDF
    A measurement of the cross section of the associated production of a single top quark and a W boson in final states with a muon or electron and jets in proton-proton collisions at root s = 13 TeV is presented. The data correspond to an integrated luminosity of 36 fb(-1) collected with the CMS detector at the CERN LHC in 2016. A boosted decision tree is used to separate the tW signal from the dominant t (t) over bar background, whilst the subleading W+jets and multijet backgrounds are constrained using data-based estimates. This result is the first observation of the tW process in final states containing a muon or electron and jets, with a significance exceeding 5 standard deviations. The cross section is determined to be 89 +/- 4 (stat) +/- 12 (syst) pb, consistent with the standard model.Peer reviewe
    corecore