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A simple approximate analytical expression for the direct correlation function of a hard-sphere fluid in D dimensions within the Percus-Yevick equation is proposed. The approximation exactly reproduces the well-known results for D = 1 and D = 3,[...]texto impreso
Aceves, R. ; Perez Sala, R. ; Barboza Flores, M. ; Pal, U ; Zaldivar, M.H. ; Piqueras de Noriega, Javier | Taylor & Francis Ltd | 2001Spectral cathodoluminescence of KCl:EU2+ (0.2% wt) crystals has been measured at different temperatures. In the 80-300 K temperature range the luminescence consists of three main broad emission bands with maxima around 418, 452, and 619nm. Based[...]texto impreso
Most of the classification models assume, in a direct or indirect way, the possibility of a representation of the object to be classified within a good properties space, in which one is able to define some distances. Quite often this representat[...]texto impreso
Gomez, D. ; Montero, Javier ; Yáñez, Javier ; González-Pachón, J. ; Cutello, V. | Taylor & Francis Ltd | 2004In this paper we address the problem of inconsistency in preference relations, pointing out the relevance of a meaningful representation in order to help decision maker to capture such inconsistencies. Dimension theory framework, despite its com[...]texto impreso
In this paper we present an alternative formulation of the well-known integral equation approximations designed to keep a consistent approach to the determination of thermodynamic properties in the case of density-dependent interactions. Obvious[...]texto impreso
Nonlinear PDE's having given conditional symmetries are constructed. They are obtained starting from the invariants of the conditional symmetry generator and imposing the extra condition given by the characteristic of the symmetry. Series of exa[...]texto impreso
Two analytic approximations for the direct correlation function of a hard-sphere fluid are considered. The first follows from a generalization of the Percus-Yevick result in d dimensions whereas the second arises in the Rational Function Approxi[...]texto impreso
Molina de la Peña, Ignacio ; Calvo Padilla, María Luisa ; Álvarez Estrada, Ramón F. | Taylor & Francis Ltd | 2019-06-22We studied the propagation of slow neutrons and their waveguiding properties in certain suitable thin films where Ti and Si play a key role, having in mind their possible use in Boron Neutron Capture Therapy (BNCT) of small tumors. In PBSi2017 w[...]texto impreso
A more general methodology for fitting global cross-ratio models for discrete longitudinal responses
In this paper, we focus on repeated measurement problems, comprising an interesting research area in statistics. We study longitudinal data which arise when outcomes are observed repeatedly on each experimental subject at several points. We focu[...]texto impreso
Domínguez-Adame Acosta, Francisco ; Méndez Martín, Bianchi ; Maciá Barber, Enrique Alfonso ; González, M. A. | Taylor & Francis Ltd | 1991-12-10It is shown that nonlocal separable potentials may be used to study bound states of particles in multicentre potentials. The binding energy is obtained in a closed form. The cases of H_2+ ion and polymer chains are discussed in detail and result[...]texto impreso
Fernández Pérez, Luis Antonio ; Martín Mayor, Víctor ; Verrocchio, P. | Taylor & Francis Ltd | 2007-01A new Monte Carlo algorithm is introduced for the simulation of supercooled liquids and glass formers, and tested in two model glasses. The algorithm thermalizes well below the Mode Coupling temperature and outperforms other optimized Monte Carl[...]texto impreso
This special issue contains the extended versions of seven selected papers presented at the 8th International FLINS Conference on Computational Intelligence and Decision Control, held in Madrid, Spain, 21–28 September 2008 (http: www. mat. ucm. [...]texto impreso
De Long, LE ; Kryukov, S. A. ; Bosomtwi, A. ; Xu, WT ; González Herrera, Elvira María ; Navarro Palma, Elena ; Villegas, J. E. ; Vicent López, José Luis ; Yu, Ct ; Pechan, MJ | Taylor & Francis Ltd | 2006-06-11The temperature and field dependences of the AC and DC magnetic moment of superconducting and ferromagnetic Nb/Ni multilayers were measured using a SQUID magnetometer with magnetic field applied parallel to the multilayer plane. Periodic kinks i[...]texto impreso
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The dispersion relations for surface waves on a planar liquid surface are obtained from first principles. The high-frequency elastic, low-frequency hydrodynamic and intermediate viscoelastic regimes are investigated separately. It is shown that [...]
