764 resultados para Sen, Amartya Kumar: Identity and violence
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This research is responsible for the investigation and problematization of the violence production process in children and teenagers through deviant behaviour, especially the drug s use and traffic, given that the deviant behaviour named juvenile criminality is something built and that can t be disassociated from the social and institutional relations that are ideological and violent, as well as the construction of, social and individual, positive identities can become important instruments for the process of democratization and the effective juvenile citizenship. In relation to the teorical referential, the work was developed from readings beyond the social science camp, without getting far from it, searching for support in other scientific camps and making your bases on Manuel Castells formulations about the power of the identity, and on Nancy Fraser and Axel Honneth in relation to the recognition struggle. In the empiric field, the discourses and graphic representations from twenty four children and teenagers that attend a social project were privileged, and compared to those shown at the documentary and the book Falcão Meninos do Tráfico produced by MV Bill, in relation to the social profile and life trajectory. From the study subjects' perspective, the data suggest that the children and the teenagers conceive violence as a natural thing, either as victims or persecutors. However, the research shows that, despite the subjects of the two studied groups reveled in your discourses the influence of the violent relations in their daily lives, the subjects got recognition during the process of identity construction by the groups with which they maintained the sense of belonging, either it being the family, the community or the school, they were positively influenced and established a positive representation of themselves and didn t show any deviant and violent tendency or behaviour. Therefore, we demonstrate the role of the school for an education for peace, as well as the participation of the family, the community and the stimulation of the juvenile protagonism as transforming practices, capable of awaking the citizenship and avoiding the construction of people that reproduce deviant and violent behaviour
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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
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Nonperturbative Wilson coefficients of the operator product expansion (OPE) for the spin-0 glueball correlators are derived and analyzed. A systematic treatment of the direct instanton contributions is given, based on a realistic instanton size distribution and renormalization at the operator scale. In the pseudoscalar channel, topological charge screening is identified as an additional source of (semi-) hard nonperturbative physics. The screening contributions are shown to be vital for consistency with the anomalous axial Ward identity, and previously encountered pathologies (positivity violations and the disappearance of the 0(-+) glueball signal) are traced to their neglect. on the basis of the extended OPE, a comprehensive quantitative analysis of eight Borel-moment sum rules in both spin-0 glueball channels is then performed. The nonperturbative OPE coefficients turn out to be indispensable for consistent sum rules and for their reconciliation with the underlying low-energy theorems. The topological short-distance physics strongly affects the sum rule results and reveals a rather diverse pattern of glueball properties. New predictions for the spin-0 glueball masses and decay constants and an estimate of the scalar glueball width are given, and several implications for glueball structure and experimental glueball searches are discussed.
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Topological charge screening in the QCD vacuum is found to provide crucial nonperturbative contributions to the short-distance expansion of the pseudoscalar (0-+) glueball correlator. The screening contributions enter the Wilson coefficients and are an indispensable complement to the direct instanton contributions. They restore consistency with the anomalous axial Ward identity and remedy several flaws in the 0-+ glueball sum rules caused by direct instantons in the absence of screening (lack of resonance signals, violation of the positivity bound and of the underlying low-energy theorem). The impact of the finite width of the instanton size distribution and the (gauge-invariant) renormalization of the instanton contributions are also discussed. New predictions for the 0-+ glueball mass and decay constant are presented.
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In the last decades of the 1901 century the Mexican society went through a period of political and economical stability, and relative social tranquility. on contrast, during the revolutionary context various armed movements promoted the disruption of this status quo. In this article, by the analysis of several testimonies, I intend to show some aspects regarding criminality and violence phenomena, during the 1910 and 1920 years on the Northern Mexico.
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The Pacific white shrimp, Litopenaeus vannamei (Penaeidae), represents about 95% of all Brazilian shrimp production. The Brazilian L. vannamei foundation broodstock was made up of specimens collected from different American Pacific sites, but little information was collected on the genetic structure of the broodstock. We used the fluorescence amplified fragment length polymorphism (fAFLP) method to study the genetic diversity of L. vannamei broodstock lines 03CMF1 and 03CBF1 originally produced by breeder-shrimps imported mainly from Panama and Ecuador, although wild individuals from other localities may also have been used in producing these two lines. Our results showed a total of 93 polymorphic bands ranging from 50 to 500 bp, the mean Nei's genetic diversity calculated for the total sample was 13.4% and identity and genetic distance analyses indicated high genetic homogeneity within and between both the broodstock lineages studied which suggests that they had similar genetic structure. These results may represent an important tool for the appropriate management of L. vannamei broodstocks. Copyright by the Brazilian Society of Genetics.
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Includes bibliography
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Predators directly and indirectly affect the density and the behavior of prey. These effects may potentially cascade down to lower trophic levels. In this study, we tested the effects of predator calls (playbacks of bird vocalizations: Tyto alba, Speotyto cunicularia, and Vanellus chilensis), predator visual stimuli (stuffed birds) and interactions of visual and auditory cues, on the behavior of frugivore phyllostomid bats in the field. In addition, we tested if the effects of predation risk cascade down to other trophic levels by measuring rates of seed dispersal of the tree Muntingia calabura. Using video recording, we found that bats significantly decreased the foraging frequency on trees when a visual cue of T. alba was present. However, no stimuli of potential predatory birds, including vocalization of T. alba, affected bat foraging frequency. There was a change in bat behavior during 7 min, but then their frequency of activity gradually increased. Consequently, the presence of T. alba decreased by up to ten times the rate of seed removal. These results indicate that risk sensitivity of frugivorous phyllostomid bats depends on predator identity and presence. Among the predators used in this study, only T. alba is an effective bat predator in the Neotropics. Sound stimuli of T. alba seem not to be a cue of predation risk, possibly because their vocalizations are used only for intraspecific communication. This study emphasizes the importance of evaluating different predator stimuli on the behavior of vertebrates, as well as the effects of these stimuli on trait-mediated trophic cascades. © 2013 Springer-Verlag Berlin Heidelberg.
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Includes bibliography
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Includes bibliography
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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
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As populações tradicionais da Amazônia, a partir da década de oitenta do século passado, redescobriram a possibilidade de afirmação da sua identidade e de seus direitos e passaram a lutar nessas direções. Um momento fundamental neste processo foi o de reconhecer sua heterogeneidade socioeconômica e cultural: povos indígenas, remanescentes das comunidades de quilombos, ribeirinhos, extrativistas, camponeses, pescadores. Na busca do reconhecimento de seus direitos às terras que ocupam e aos recursos naturais nela existentes, constaram que a legislação não apresentava normas que espelhassem a contento suas experiências de vida. Instrumentos jurídicos inovadores surgem nesse contexto, a exemplo das unidades de conservação de uso de direito e de outras modalidades de regularização fundiária de natureza agro-ecológica. Nessa perspectiva, a experiência dos agroextrativistas do município de Gurupá, estado do Pará, foi investigada e é discutida com base em evidências qualitativas e quantitativas produzidas sob uma orientação interdisciplinar quanto à metodologia. Ainda, considerou-se o local/regional a partir da história e das tendências ambientais e socioeconômicas recentes. Essa abordagem implicou em uso de um conjunto de imagens de importância iconográfica e na discussão de conceitos como o de populações tradicionais, desenvolvimento sustentável e política pública. Por sua vez e ao longo da tese, a literatura acadêmica, a documentação especializada e os dados produzidos in lócus revelam a problemática jurídica-fundiária entre ao agroextrativistas gurupaenses com elemento central e ao mesmo tempo aglutinante nas transformações que está a os atingir. Nestes termos, tem-se um processo de ocupação das terras permeado por conflitos de interesses, abusos e mesmo violência, uma lesgilação em vigor ao longo do tempo e plena de contradições, e a existência de registros cartoriais de imóveis dominados por inconsistências jurídicas. Diante disso, esses trabalhadores e especialistas sensíveis a sua causa surgem como vitorioso em muitas questões ao demandarem ao poder público possibilidades que pudessem garantir-lhes segurança jurídica com vistas à permanência na terra.