Biodiversidade e reforma agrária: uma experiência agroecolócica na região canavieira de Ribeirão Preto, Brasil.

A região de Ribeirão Preto, norte do estado de São Paulo, Brasil, se caracteriza pelo predomínio da monocultura da cana de açúcar, com grande impacto ambiental negativo sobre o Aqüífero Guarani. Visando conciliar a demanda social por terra e a preservação ambiental, em 2004 foi implantado na região um assentamento de reforma agrária, apoiado na matriz tecnológica da agroecologia. O artigo irá descrever e analisar este processo sob a ótica da construção de um novo modelo de desenvolvimento para região

The structural and content aspects of abstracts versus bodies of full text journal articles are different

<p>Abstract</p> <p>Background</p> <p>An increase in work on the full text of journal articles and the growth of PubMedCentral have the opportunity to create a major paradigm shift in how biomedical text mining is done. However, until now there has been no comprehensive characterization of how the bodies of full text journal articles differ from the abstracts that until now have been the subject of most biomedical text mining research.</p> <p>Results</p> <p>We examined the structural and linguistic aspects of abstracts and bodies of full text articles, the performance of text mining tools on both, and the distribution of a variety of semantic classes of named entities between them. We found marked structural differences, with longer sentences in the article bodies and much heavier use of parenthesized material in the bodies than in the abstracts. We found content differences with respect to linguistic features. Three out of four of the linguistic features that we examined were statistically significantly differently distributed between the two genres. We also found content differences with respect to the distribution of semantic features. There were significantly different densities per thousand words for three out of four semantic classes, and clear differences in the extent to which they appeared in the two genres. With respect to the performance of text mining tools, we found that a mutation finder performed equally well in both genres, but that a wide variety of gene mention systems performed much worse on article bodies than they did on abstracts. POS tagging was also more accurate in abstracts than in article bodies.</p> <p>Conclusions</p> <p>Aspects of structure and content differ markedly between article abstracts and article bodies. A number of these differences may pose problems as the text mining field moves more into the area of processing full-text articles. However, these differences also present a number of opportunities for the extraction of data types, particularly that found in parenthesized text, that is present in article bodies but not in article abstracts.</p

The mythical shapeshifting of capital and petrification of labour : deepening conflict on the agrofuel frontier

In the great civilisations of the past, shapeshifting promised a restoration of order in turbulent times in return for the deference of loyal subjects. It was a strategy of the powerful to maintain advantage and could also be used to bind opponents to an undesired form. This study finds its resonance in the contemporary shapeshifting that is the supposed transition from the fossil fuel economy. With reference to the fusion of oil, grain and sugar companies in Brazil's ethanol sector, it explores how amidst economic, environmental and political insecurity these “old villains” of the carbon economy have fused and emerged as the “new heroes” of the green economy. Accounts of dissenting rural subjects, however, unveil the mythical nature of avowed social gains from this shapeshifting. Amidst rural conflict and a successive weakening of regulation, it becomes evident how their petrification, in a metaphorical and increasingly literal sense is required

Revista do Museu Paulista e(m) capas: identidade e representação institucional em texto e imagem

Este artigo propõe reflexão sobre a escrita da história, a partir de estudo das capas da Revista do Museu Paulista, especialmente durante as gestões dos dois primeiros diretores da instituição, quando certa continuidade editorial foi preservada. Tomadas como "fontes", ou seja, objeto de trabalho do historiador, as capas revelam vestígios de processos que permitem reconstruir, em suas dimensões históricas, as complexas imbricações entre a produção da Revista, sua materialidade, e os atos de leitura e interpretação que condicionam e refletem relações entre produtores de textos e seus leitores nas primeiras décadas do século XX, a partir de São Paulo, onde era editada.This paper offers a reflection about the writing of History, based on the study of Revista do Museu Paulista's covers, noticeably during the term of its two first directors, when a certain editorial continuity was preserved. Taken as "sources", namely as historian subjects, those covers reveal evidences of practices that allow one to reconstitute, in its historic dimensions, the complex connection between the creation of the Revista, its materiality, and the reading and interpretation efforts that condition and reflect liaisons with writers and readers during the first decades of the XXth Century, from São Paulo, where it was published.

O desenvolvimento da agroindústria canavieira do Brasil desde a Segunda Guerra Mundial

Avaliação do desenvolvimento da produção brasileira de cana, açúcar e álcool nos últimos 50 anos, bem como das mudanças de sua distribuição espacial após a Segunda Guerra. Retrospecto cronológico dos principais problemas da agroindústria canavieira cobrindo quatro períodos seqüenciais (1939-1949), tentativas de reinserção do Brasil nos mercados açucareiros internacionais (1950-1968), tendências de concentração e de mordernização setoriais (1969-1974), os desvios do açúcar para o álcool e vice versa. O artigo termina com algumas breves considerações sobre a crise da oferta de álcool em 1990.<br>Assessmente of the evolution of Brazil's sugarcane, sugar and ethanol production durng the alst fifty years, as well as of its slnfting spatial pattern after the last World War., Chronological account ofthe industry's main problems covering four sequential periods: World War II and its consequences (1939-1949), attempts of reinsertion in the international sugar markets (1950-1968), trends of sectorial concentration and modernization (1969-1974), and dislocations from sugar to ethanol and vice versa (1975-1989). The article ends with some succint considerations on the ethanol supply crisis of 1990

Dimensões, riscos e desafios da atual expansão canavieira.

Introdução; Concentração fundiária; Impactos no emprego; Aspectos ambientais; Considerações finais.Um exemplar na memória técnica do SCT com o n. 00230