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Search Results: 1 - 10 of 178117 matches for " E. Garcia "
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Asymptotic H?lder absolute values
E. Mu oz Garcia
International Journal of Mathematics and Mathematical Sciences , 2002, DOI: 10.1155/s0161171202110398
Abstract: We prove that asymptotic Hölder absolute values are Hölder equivalent to classical absolute values. As a corollary we obtain a generalization of Ostrowski's theorem and a classical theorem by E. Artin. The theorem presented implies a new, more flexible, definition of classical absolute value.
Educa??o brasileira: da realidade à fantasia
Garcia, Walter E;
Cadernos de Pesquisa , 1999, DOI: 10.1590/S0100-15741999000200010
Abstract: the text presented here: at the request of the educational policy group of the anped, perhaps adds nothing new to what everyone already knows about the state of education in our country. with the exception of some nuances that have arisen in the political management of educational issues during recent years, the better part of the analysis restates concepts and information already existing in the public domain. however, the emergence of marketing as a fundamental means of producing facts and creating a metareality very different from what is really happening in the country's daytoday school life has inevitable repercussions on the course of events.
Workshop on advanced polarimetric instrumentation: API’09
Garcia-Caurel E.
EPJ Web of Conferences , 2010, DOI: 10.1051/epjconf/20100500001
Abstract: The First NanoCharM Workshop on Advanced Polarimetric Instrumentation was focused on the instrumentation developed to work with polarised light, which is the cause of a great deal of research and study in a variety of fields, such as astronomy, telecommunications, defence, medicine, electronics, material science, metrology and many more. The workshop was therefore organised around six themes: imaging, astronomy and satellites, measurement of optical activity, Mueller matrix algebra and polarimetric data analysis, diffractometry and metrology of nanostructures, as well as new developments in polarimetric instrumentation. The workshop was founded by the European project NanoCharM the aim of which is, firstly, to coordinate research activities focusing on the characterisation of materials using polarised light (polarimetry) and, secondly, to develop communication initiatives to make scientists, decision-makers in the broadest sense of the term, industrialists and students aware of the various applications of polarised light.
Stochastic modelling of intermittent scrape-off layer plasma fluctuations
O. E. Garcia
Physics , 2012, DOI: 10.1103/PhysRevLett.108.265001
Abstract: Single-point measurements of fluctuations in the scrape-off layer of magnetized plasmas are generally found to be dominated by large-amplitude bursts which are associated with radial motion of blob-like structures. A stochastic model for these fluctuations is presented, with the plasma density given by a random sequence of bursts with a fixed wave form. Under very general conditions, this model predicts a parabolic relation between the skewness and kurtosis moments of the plasma fluctuations. In the case of exponentially distributed burst amplitudes and waiting times, the probability density function for the fluctuation amplitudes is shown to be a Gamma distribution with the scale parameter given by the average burst amplitude and the shape parameter given by the ratio of the burst duration and waiting times.
Rigidity of AMN vector spaces
E. Munoz-Garcia
Mathematics , 2000,
Abstract: A metric vector space is asymptotically metrically normable (AMN) if there exists a norm asymptotically isometric to the distance. We prove that AMN vector spaces are rigid in the class of metric vector spaces under asymptotically isometric perturbations. This result follows from a general metric normability criterium. If the distance is translation invariant and satisfies an approximate multiplicative condition then there exists a lipschitz equivalent norm. Furthermore, we give necessary and sufficient conditions for the distance to be asymptotically isometric to the norm.
Regularized theta lifts and (1,1)-currents on GSpin Shimura varieties. I
Luis E. Garcia
Mathematics , 2014,
Abstract: We introduce a regularized theta lift for reductive dual pairs of the form $(Sp_4,O(V))$ with $V$ a quadratic vector space over a totally real number field $F$. The lift takes values in the space of $(1,1)$-currents on the Shimura variety attached to $GSpin(V)$, and we prove that its values are cohomologous to currents given by integration on special divisors against automorphic Green functions. In the second part to this paper, we will show how to evaluate the regularized theta lift on differential forms obtained as usual (non-regularized) theta lifts.
On the values of some singular currents on Shimura varieties of orthogonal type
Luis E. Garcia
Mathematics , 2014,
Abstract: In a previous paper (arxiv:1409.7353), we introduced a regularized theta lift for reductive dual pairs of the form $(Sp_4,O(V))$ with $V$ a quadratic vector space over a totally real number field $F$. The lift takes values in the space of $(1,1)$-currents on the Shimura variety attached to $GSpin(V)$, and we proved that its values are cohomologous to currents given by integration on special divisors against automorphic Green functions. In this paper, we will evaluate the regularized theta lift on differential forms obtained as usual (non-regularized) theta lifts. Using the Siegel-Weil formula and ideas of Piatetskii-Shapiro and Rallis, we show that the result involves near central special values of standard $L$-functions for $Sp_{4,F}$. An example concerning products of Shimura curves will be given at the end of the paper.
Petrochemical Industry: Assessment and Planning Using Multicriteria Decision Aid Methods  [PDF]
Carlos E. Escobar Toledo, Claudia Garcia Aranda, Bertrand Mareschal
Technology and Investment (TI) , 2010, DOI: 10.4236/ti.2010.12015
Abstract: A methodology to solve a large and complex problem is proposed. OR methods as Multilevel Planning, Network Techniques, Multicriteria Decision Aid (MCDA) and Mixed Integer Linear Programming (MILP) were used to structure the methodology. One of the principal objectives of this work is reduce the complexity of a large problem and solve it to find the better solution for the decision makers. The methodology is applied to a petrochemical industry of Mexico, which is structured in a network, having different alternative routes of production; each of them having also a different technology. This network begins from the crude oil as raw material in order to produce the basic petrochemicals until finals ones. It has been considered that basic petrochemicals will be produced through a set of Refineries with a high production of basic petrochemicals yield, searching the best configuration among it, according with the needs of basic petrochemicals coming from the final’s and its best route selected.
Flying in Complex Environments: Can Insects Bind Multiple Sensory Perceptions and What Could Be the Lessons for Machine Vision?  [PDF]
Adrian G. Dyer, Sridhar Ravi, Jair E. Garcia
Journal of Software Engineering and Applications (JSEA) , 2014, DOI: 10.4236/jsea.2014.75037

The possibility of having flying machines in complex natural environments presents many exciting possibilities, but also technical challenges. Insects often rely on visual cues for flight and decision making, and recent work suggests that the perception of wind force through tactile sensory inputs also provides important information for flight control. However, the extent to which these respective cues might potentially be bound together in the brain to enable accurate decisions remains untested. Here we discuss recent evidence that the brain of insects possesses mechanisms that may allow for the binding of complex multisensory information, and we propose an experiment that could dissect whether insects like bees may have such a capacity. We additionally discuss areas of the bee brain that might facilitate decision making in order to provide a road map forward for future work on understanding the mechanisms of flying in complex natural environments.

Aportación de la gestión de calidad a Bibliotecas y Servicios de Documentación
Garcia-Morales Huidobro, E.
Revista Espa?ola de Documentación Científica , 1995,
Abstract: Libraries and information Services must look forward and adapt their services in a changing environment. To apply Total Quality Management philosophy and techniques is the way to obtain satisfaction of customer needs and continuous improvement in our work processes. Las Bibliotecas y Servicios de Documentación deben mirar hacia adelante y adaptarse a los cambios que se producen en su entorno. Se plantean las aportaciones de la filosofía de la Gestión de la Calidad en la adecuación de nuestros servicios a las necesidades de los clientes y en la mejora de los procesos de trabajo y control internos.
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