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Elsevier Science BV |
Documentos disponibles de esta editorial (389)
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Martínez Matos, Óscar ; Calvo Padilla, María Luisa ; Cheben, Pavel ; Rodrigo Martín-Romo, José Augusto ; Janz, Siegfried ; Xu, Dan-Xia ; Delâge, André | Elsevier Science BV | 2007-02-01We propose a new type of arrayed waveguide grating (AWG) multiplexer/demultiplexer based on modified group refractive index. This device is composed by an array of straight and parallel waveguides of equal length and each waveguide consist of tw[...]![]()
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A plate-and-frame membrane module has been used in sweeping gas membrane distillation process. Both numerical simulation and experimental studies have been carried out. The numerical simulation focuses on modelling heat, mass and momentum transp[...]![]()
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Fernández Pérez, Luis Antonio ; Martín Mayor, Víctor ; Sciretti, D. ; Tarancón, A. | Elsevier Science BV | 2005-11-10We investigate by means of Monte Carlo simulation and finite-size scaling analysis the critical properties of the three dimensional O (5) non-linear ? model and of the antiferromagnetic RP^(2) model, both of them regularized on a lattice. High a[...]![]()
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Barragán García, Vicenta María ; Ruiz Bauzá, Carlos ; Mengual Cabezón , Juan Ignacio | Elsevier Science BV | 1994-10-10The apparent electro-osmotic permeability, W, of three ion-exchange membranes has been obtained under different experimental conditions. The behaviour of W as a function of the current density, I, shows the following characteristics: (i) at suff[...]![]()
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In this paper, we introduce kinds of fuzzy paracompactness on fuzzy subsets, relative to a fuzzy topological space. For this, we use the Luo's definitions of fuzzy aracompactness. We give the relationship between [alpha]-paracompactness and the [...]![]()
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In General Topology, there is a close paralellism between the theories of convergence of nets and of filters, in which "subnet" corresponds to "finer filter", but this relationship depends on the notion of subnet that one uses. Various authors h[...]![]()
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In this paper we deal with the problem of obtaining a random procedure for generating fuzzy measures. We use the fact that the polytope of fuzzy measures is an order polytope, so that it has special properties that allow to build a uniform algor[...]![]()
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For the model of independence in a two way contingency table, shrinkage estimators based on minimum phi-divergence estimators and phi-divergence statistics are considered. These estimators are based on the James-Stein-type rule and incorporate t[...]![]()
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Rosado Vélez, Jaime ; Blanco Ramos, Francisco ; Arqueros Martínez, Fernando | Elsevier Science BV | 2014-03The absolute value of the air-fluorescence yield is a key parameter for the energy reconstruction of extensive air showers registered by fluorescence telescopes. In previous publications, we reported a detailed Monte Carlo simulation of the air-[...]![]()
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The estimation problem of the parameters in a symmetry model for categorical data has been considered for many authors in the statistical literature (for example, Bowker (1948) [1], Ireland et al. (1969) [2], Quade and Salama (1975) [3] Cressie [...]![]()
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The thermal membrane potential across a cation-exchange membrane has been determined under different experimental situations. In all cases, a clear linear dependence between the thermal membrane potential, Delta Psi, and the temperature differen[...]![]()
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We develop an alternative formulation of the symmetry breaking sector of the Standard Model as a gauged non-linear sigma model (NLSM) following the philosophy of the Chiral lagrangian approach, which is the only compatible with all the experimen[...]![]()
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We discuss the existence of de Sitter inflationary solutions for the string-inspired fourth-derivative gravity theories with dilaton field. We consider a space-time of arbitrary dimension D and an arbitrary parametrization of the target space me[...]![]()
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In this letter we show how it is possible to obtain the large N(f) limit of chiral perturbation theory (chi-PT) in the chiral limit. In particular, we compute explicitly the Nambu-Goldstone boson (NGB) elastic scattering amplitude to leading ord[...]