31 resultados para Equivalence principle


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A measurement of W boson production in lead-lead collisions at sNN−−−√=2.76 TeV is presented. It is based on the analysis of data collected with the ATLAS detector at the LHC in 2011 corresponding to an integrated luminosity of 0.14 nb−1 and 0.15 nb−1 in the muon and electron decay channels, respectively. The differential production cross-sections and lepton charge asymmetry are each measured as a function of the average number of participating nucleons ⟨Npart⟩ and absolute pseudorapidity of the charged lepton. The results are compared to predictions based on next-to-leading-order QCD calculations. These measurements are, in principle, sensitive to possible nuclear modifications to the parton distribution functions and also provide information on scaling of W boson production in multi-nucleon systems.

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Dissertação de mestrado em Direito das Autarquias Locais

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Dissertação de mestrado em European and Transglobal Business Law

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Dissertação de mestrado em Filosofia Política

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Rational manipulation of mRNA folding free energy allows rheostat control of pneumolysin production by Streptococcus pneumoniae

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Dissertação de mestrado integrado em Engenharia Eletrónica Industrial e Computadores

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Programa Doutoral em Líderes para as Indústrias Tecnológicas

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Doctoral Dissertation for PhD degree in Industrial and Systems Engineering

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Tese de Doutoramento em Biologia de Plantas

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Dissertação de mestrado Internacional em Sustentabilidade do Ambiente Construído

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Tese de Doutoramento em Ciências da Comunicação (área de especialização em Sociologia da Comunicação e da Informação).

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Hybrid logics, which add to the modal description of transition structures the ability to refer to specific states, offer a generic framework to approach the specification and design of reconfigurable systems, i.e., systems with reconfiguration mechanisms governing the dynamic evolution of their execution configurations in response to both external stimuli or internal performance measures. A formal representation of such systems is through transition structures whose states correspond to the different configurations they may adopt. Therefore, each node is endowed with, for example, an algebra, or a first-order structure, to precisely characterise the semantics of the services provided in the corresponding configuration. This paper characterises equivalence and refinement for these sorts of models in a way which is independent of (or parametric on) whatever logic (propositional, equational, fuzzy, etc) is found appropriate to describe the local configurations. A Hennessy–Milner like theorem is proved for hybridised logics.

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Relatório de estágio de mestrado em Média Interativos

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Dissertação de mestrado em Direito Judiciário