General Systems Theory
Mostrando 13-24 de 134 artigos, teses e dissertações.
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13. Sistemas EsquemÃticos de DeduÃÃo Natural: um Estudo Prova-TeÃrico / Schematic Natural Deduction Systems: A Proof-Theoretical Study
The term Theory Test was introduced by Hilbert to identify the study of formal proofs. Research in this area can be classified into: a) Proof Theory of reductive or interpretational, whose goal is to demonstrate, among other things, the consistency of mathematics using only methods finitistas, b) Structural Proof Theory, where the structural characteristics
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 12/03/2010
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14. Pulsar binary systems in a nonsymmetric theory of gravitation II. Dipole radiation
This paper deals with the emission of gravitational radiation in the context of a previously studied metric nonsymmetric theory of gravitation. The part coming from the symmetric part of the metric coincides with the mass quadrupole moment result of general relativity. The one associated to the antisymmetric part of the metric involves the dipole moment of t
Brazilian Journal of Physics. Publicado em: 2010-12
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15. The role of nonequilibrium thermo-mechanical statistics in modern technologies and industrial processes: an overview
The nowadays notable development of all the modern technology, fundamental for the progress and well being of world society, imposes a great deal of stress in the realm of basic Physics, more precisely on Thermo-Statistics. We do face situations in electronics and optoelectronics involving physical-chemical systems far-removed-from equilibrium, where ultrafa
Brazilian Journal of Physics. Publicado em: 2010-03
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16. Quick response manufacturing (QRM) uma alternativa para redução do lead time na área produtiva de uma empresa de materiais de escrita
The approach Quick Response Manufacturing (QRM) has been proposed in the late ninety, and since then, has been successfully deployed in many companies, achieving promising results in reduction of lead time in environments with high product variety. This approach, although already established abroad, mainly in the United States, is poorly known in Brazil as n
Publicado em: 2010
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17. Proposta de um modelo de simulação baseado em lógica Fuzzy e no SCOR para predizer o desempenho da empresa-foco em cadeias de suprimentos / Proposal of a fuzzy logic simulation model to predict performance of focus company in supply chains
This paper presents and discusses a proposal based on the theory of fuzzy sets to predict performance of focus company in a supply chain modeled according to causal relationships among performance metrics proposed by SCOR (version 8.0). The use of performance measurement systems to manage performance of supply chains presents some limitations such as difficu
Publicado em: 2010
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18. Interpretação e aplicação do direito tributário: fundamentos jurídicos da decisão
The main purpose of the present term paper is to provide a framework for a theory of the legally valid tax decision that assures the unity and consistency of the national tax system, based upon an analysis of interpretation, application and implementation of Tax Law. Positive law is understood to be a set of legal norms that exist within an historical contex
Publicado em: 2010
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19. Ética e metafísica na filosofia de Íris Murdoch : a peregrinação moral em busca do bem
Interpretation of Iris Murdochs moral philosophy. The present dissertation is structured upon three issues correlated in order to propose a general grasp of ethics and metaphysics in Iris Murdochs thought. The issues are: the pluralism of moral visions, the good and the void. The fundamental question, which guides the investigation, is about the possibility
Publicado em: 2010
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20. Combinação de modelos de campos aleatórios markovianos para classificação contextual de imagens multiespectrais / Combining markov random field models for multispectral image contextual classification
This work presents a novel MAP-MRF approach for multispectral image contextual classification by combining higher-order Markov Random Field models. The statistical modeling follows the Bayesian paradigm, with the definition of a multispectral Gaussian Markov Random Field model for the observations and a Potts MRF model to represent the a priori knowledge. In
Publicado em: 2010
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21. Controle supervisÃrio da cadeia produtiva do biodiesel da mamona baseado em redes de Petri / Supervisory control of castor bean biodiesel suppy chain based on Petri nets
Nowadays many countries present critical problems related to energy demand-supply equilibrium. The reserves of petroleum-based products are unable to face future demand for the next decades. So, the search for alternative sources of energy has been strongly directed to biodiesel. Several fruit oils can be used as a source for biodiesel production and the cas
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 10/09/2009
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22. Classical and quantum correlations under decoherence / Correlações clássicas e quânticas sob decoerência
Recently, in the context of discrete variables, the existence of quantum correlations that are more general than entanglement was identified. We may conjecture that these correlations are a very important resource in quantum information science and in some areas of physics. However, this fragile resource is quickly destroyed by the decoherence process. In th
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 26/08/2009
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23. Algebraic methods for the computation of general reversible-equivariant mappings / Métodos algébricos para a obtenção de formas gerais reversíveis-equivariantes
In the global and local analysis of dynamical systems, we assume, in general, that the equations are in a normal form. In presence of symmetries, the equations and the problem domain are invariant under the group formed by these symmetries; in that case, the vector field is equivariant by the action of this group. When, in addition to the symmetries, we have
Publicado em: 2009
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24. Burni-in and warranty processes in coherent systems under the general lifetime model / Processos de burn-in e de garantia em sistemas coerentes sob o modelo de tempo de vida geral
In this work we consider three main topics. In the first two, we generalize some classical results on Reliability Theory related to the optimization in burn-in procedures and warranty policies, using the general lifetime model of a coherent system observed on the component level and extending the definitions of bathtub shaped failure rate and general failure
Publicado em: 2009