996 resultados para Onward moves


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Includes bibliography

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Esta pesquisa se insere dentro da história da agricultura no Brasil, especialmente no Estado de São Paulo, a partir da segunda metade do século XIX, início do século XX. As propostas de modernização agrícola giravam em torno de diferentes assuntos, mas sempre interligados, como: diversificação da agricultura, adubação química e natural, cultura intensiva do solo, mão de obra, povoamento e colonização, instalação de núcleos coloniais dentro dos moldes da moderna agricultura então desejada, instrução agrícola por meio de campos de experiências e demonstração, ensino agrícola para diferentes graus, a mecanização da lavoura, o que era chamado, na época, de Moderna Agricultura, em substituição ao que era considerado como agricultura rotineira ou atrasada, praticada desde o início da agricultura no Brasil.

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Several factors have contributed to the increase the world production of urban solid waste, resulting in difficulties to the correct management and the final environmentally appropriate disposal, in addition to causing serious socio-economic, environmental, and public health troubles. The soil and groundwater contamination by leachate in waste disposal sites is almost always present, leveraging the emergence and/or adaptation of methodologies for environmental assessment of these areas. The geophysical methods, especially the electrical resistivity method, are fast, reliable and low-cost alternative for this purpose. This paper reports the methodology adopted for the temporal monitoring of the plume of contamination of controlled landfill in the municipality of Rio Claro (SP). Electrical resistivity data were obtained in 1999 and 2008, by the resistivity method, using the techniques of vertical electrical sounding and electrical profile. In both years, similar tests were carried out in the same locations within the disposal area. The results indicated that the plume of contamination has resistivity values less than or equal to 50 ohm.m and moves guided by 2 flows: the main, to the southeast, and the secondary, to the west. Relatively to the first series of tests in 1999, the plume of contamination was higher and deeper in 2008, contrary to what was expected for a landfill deactivated for at least 10 years.

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We investigate how special relativity influences the transmission of classical information through quantum channels by evaluating the Holevo bound when the sender and the receiver are in (relativistic) relative motion. By using the spin degrees of freedom of spin-1/2 fermions to encode the classical information, we show that, for some configurations, the accessible information in the receiver can be increased when the spin detector moves fast enough. This is possible by allowing the momentum wave packet of one of the particles to be sufficiently wide while the momentum wave packets of other particles are kept relatively narrow. In this way, one can take advantage of the fact that boosts entangle the spin and momentum degrees of freedom of spin-1/2 fermions to increase the accessible information in the former. We close the paper with a discussion of how this relativistic quantum channel cannot in general be described by completely positive quantum maps. © 2013 American Physical Society.

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Pós-graduação em Artes - IA

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Pós-graduação em Artes - IA

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Pós-graduação em Engenharia Mecânica - FEIS

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Pós-graduação em Comunicação - FAAC

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Pós-graduação em Direito - FCHS

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Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)