47 research outputs found

    Produção animal de base familiar no semi-árido sergipano.

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    bitstream/CPATC/19778/1/f_16_2007.pd

    Monte Carlo Simulations for the Slow Relaxations of Crumpled Surfaces

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    In this paper we study crumpled surfaces through Monte Carlo Simulations. The crumpled surface is represented by a cluster of spins pointing up and spins pointing down represent the air both inside and around the surface. We follow the time dynamics of this fractal structure and we have shown that it presents a stretched exponential behaviour

    Produção animal de base familiar no semi-árido sergipano.

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    Este trabalho foi realizado com o objetivo de conhecer a realidade na qual o produtor do semi-árido está inserido e caracterizar o sistema de produção animal em Nossa Senhora da Glória, semi-árido sergipano. Para tanto foram realizadas 103 entrevistas com produtores rurais, escolhidos aleatoriamente de forma a contemplar todas as áreas censitárias do município. De posse das informações pode-se afirmar que a produção animal é realizada predominantemente por produtores familiares, sendo que, o tamanho pequeno das propriedades e dos rebanhos pode dificultar a sustentabilidade dos sistemas de produção. Predominam nos sistemas de produção a criação de bovinos de leite, suínos, ovinos e aves. Os bovinos de leite se constituem na principal fonte de renda, sendo que, os suínos, ovinos e as galinhas de capoeira, asseguram a alimentação da família e complementam a renda do produtor de leite ou do agricultor. A alimentação dos bovinos no período seco é dependente de insumos externos. A maioria das propriedades realiza uma única ordenha no dia e são poucos os produtores que preparam o solo com tração animal. Conclui-se que há necessidade de estruturar as cadeias produtivas e desenvolver e/ou apropriar tecnologias adequadas para os produtores familiares da região.Organizado por Helenira Ellery Marinho Vasconcelos, Vitor Hugo de Oliveira, Andréia Hansen Oster

    The KnowRISK project: Tools and strategies to reduce non-structural damage

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    The project KnowRISK (Know your city, Reduce seISmic risK through non-structural elements) is financed by the European Commission to develop prevention measures that may reduce non-structural damage in urban areas. Pilot areas of the project are within the three European participating countries, namely Portugal, Iceland and Italy. Non-structural components of a building include all those components that are not part of the structural system, more specifically the architectural, mechanical, electrical, and plumbing systems, as well as furniture, fixtures, equipment, and contents. Windows, partitions, granite veneer, piping, ceilings, air conditioning ducts and equipment, elevators, computer and hospital equipment, file cabinets, and retail merchandise are all examples of nonstructural components that are vulnerable to earthquake damage. We will use the experience gained during past earthquakes, which struck in particular Iceland, Italy and Portugal (Azores). Securing the non-structural elements improves the safety during an earthquake and saves lives. This paper aims at identifying non-structural seismic protection measures in the pilot areas and to develop a portfolio of good practices for the most common and serious non-structural vulnerabilities. This systematic identification and the portfolio will be achieved through a “crossknowledge” strategy based on previous researches, evidence of non-structural damage in past earthquakes. Shake table tests of a group of non-structural elements will be performed. These tests will be filmed and, jointly with portfolio, will serve as didactic supporting tools to be used in workshops with building construction stakeholders and in risk communication activities. A Practical Guide for non-structural risk reduction will be specifically prepared for citizens on the basis of the outputs of the project, taking into account the local culture and needs of each participating countryPublishedVienna3T. Pericolosità sismica e contributo alla definizione del rischiorestricte

    f(R) Gravity and scalar-tensor theory

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    In the present paper we will investigate the relation between scalar-tensor theory and f(R)f(R) theories of gravity. Such studies have been performed in the past for the metric formalism of f(R)f(R) gravity; here we will consider mainly the Palatini formalism, where the metric and the connections are treated as independent quantities. We will try to investigate under which circumstances f(R)f(R) theories of gravity are equivalent to scalar-tensor theory and examine the implications of this equivalence, when it exists.Comment: minor changes to match published version, references adde

    Urban Disaster-Prevention Strategies Using Macroseismic Fields and Fault Sources

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    This contribution presents the general framework of the European project UPStrat-MAFA "Urban disaster Prevention Strategies using MAcroseismic Fields and FAult Sources" and its ongoing activities. A unique probabilistic procedure is being used for seismic hazard evaluation, using both macroseismic fields and characteristics of fault sources for the analysis of data from volcanic and tectonic areas: Mt. Etna, Mt. Vesuvius and Campi Flegrei (Italy), Azores Islands (Portugal), South Iceland (Iceland), Alicante-Murcia (Spain), and mainland and offshore Portugal. An improvement of urban scale vulnerability information on building and network systems (typologies, schools, strategic buildings, lifelines, and others) is proposed in the form of a global Disruption Index, with the objective to provide a systematic way of measuring earthquake impact in urbanized areas considered as complex networks. Disaster prevention strategies are considered based on an education information system, another effective component of the disaster risk reduction given by long-term activities.Co-financed by the EU - Civil Protection Financial Instrument, in the framework the European project ”Urban disaster Prevention Strategies using MAcroseismic Fields and FAult Sources (Acronym: UPStrat-MAFA, Grant Agreement N. 23031/2011/613486/SUB/A5). http://ec.europa.eu/echo/funding/cp_projects2011_en.htmPublishedLisbon - Portugal4.1. Metodologie sismologiche per l'ingegneria sismicaope

    Urban Disaster-Prevention Strategies Using Macroseismic Fields and Fault Sources

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    This contribution presents the general framework of the European project UPStrat-MAFA "Urban disaster Prevention Strategies using MAcroseismic Fields and FAult Sources" and its ongoing activities. A unique probabilistic procedure is being used for seismic hazard evaluation, using both macroseismic fields and characteristics of fault sources for the analysis of data from volcanic and tectonic areas: Mt. Etna, Mt. Vesuvius and Campi Flegrei (Italy), Azores Islands (Portugal), South Iceland (Iceland), Alicante-Murcia (Spain), and mainland and offshore Portugal. An improvement of urban scale vulnerability information on building and network systems (typologies, schools, strategic buildings, lifelines, and others) is proposed in the form of a global Disruption Index, with the objective to provide a systematic way of measuring earthquake impact in urbanized areas considered as complex networks. Disaster prevention strategies are considered based on an education information system, another effective component of the disaster risk reduction given by long-term activities
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