Listar Revista de Matemática: Teoría y Aplicaciones por título
Mostrando ítems 221-240 de 319
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Parallelization of a Quantum-Classic Hybrid Model For Nanoscale Semiconductor Devices
(2011-07-26)The expensive reengineering of the sequential software and the difficult parallel programming are two of the many technical and economic obstacles to the wide use of HPC. We investigate the chance to improve in a rapid way ... -
Parameter Estimation in HIV/AIDS Epidemiological Models.
(2010-07-02)The validation process of mathematical models that describe practical applications usually implies the estimation of the unknown parameters that are involved. In this work, in order to estimates these parameters in the ... -
Particiones óptimas: características y calidad de sus aproximaciones
(2009-02-18)In the part, we present a factorial approach for clustering following the least squares criterion, for every choice of the metrics in the individual space. We deduce that the between-clusters inertia has an upper bound ... -
Partición óptima: el algoritmo de Fisher
(2012-03-29)El algoritmo de Fisher es un algoritmo que calcula exactamente una partición óptima en k clases de un conjunto W de n individuos a los que se les ha medido una variable real v. Tal clasificación que se obtiene, aunque no ... -
Pattern equation method for the solution of electromagnetic scattering by axially-symmetric particles with complex anisotropic surface impedance
(2013-04-04)The pattern equation method (PEM) has been extended to solve the scattering problems of electromagnetic waves by particles with mixed anisotropic surface impedance. Thus, the anisotropic impedance boundary conditions are ... -
Personnel Selection Based on Fuzzy Methods
(2011-03-18)The decisions of managers regarding the selection of staff strongly determine the success of the company. A correct choice of employees is a source of competitive advantage. We propose a fuzzy method for staff selection, ... -
Portfolio Optimization Using Particle Swarms with Stripes
(2011-04-29)In this paper it is consider the Portfolio Optimization Problem developed by Markowitz [11]. The basic assumption is that the investor tries to maximize his/her profit and at the same time, wants to minimize the risk. This ... -
Precuantización en difeologías suaves
(2009-02-18)We define a prequantization in the category of smooth diffeological spaces ( a category which includes finite an infinite dimensional systems), in the case where the symplectic form is exact, extending, for this case, the ... -
Predicción estacional del clima en Centroamérica mediante la reducción de escala dinámica. Parte II: aplicación del modelo MM5V3
(2009-02-27)In the first part of this work it was determined that general circulation model(GCM) ECHAM4.5 shows more ability than CCM3.6 to simulate key climate featuresof Central America. For such reason, output from ECHAM4.5 was ... -
Preference of effective Factors in suitable selection of Microtunnel boring machines (mtbm) by using the fuzzy analytic hierarchy process (fahp) approach
(2011-07-08)The development of underground infrastructure, environmental concerns, and economic trend is influencing society. Due to the increasingly critical nature of installations of utility systems especially in congested areas, ... -
Preference structures, choice functions and their logical form
(2009-02-20)Binary relations and choice functions are two different tools for describing DMpreferences on a finite set of alternatives. Normal choice functions are the link betweenthese two tools. These choice functions are easily ... -
Presentación e implementación del método de nubes dinámicas difuso
(2009-02-18)Se hace una presentación del método de Nubes Dinámicas Difuso considerando la variante del centro de gravedad (Forgy, 1965). La clasificación difusa obtenida se usa como herramienta de validación para establecer el número ... -
Principal Component and Regression Analysis for Categorical Data.Application to Arterial Hypertension.
(2010-07-02)The present work is about the statistical processing of categorical data. The mathematical details of the Categorical Principal Components and the Categorical Regression Analysis are explained.The combination of both ... -
Problemas matemáticos sugeridos por la genética y la ecología de poblaciones
(2009-02-20)The main goal of the present work is to show a paralellism between the equationsin Physics and Mathematics, and some problems generated in another branch whichcould be called Mathematical Biology. The article is divided ... -
Productos de Kronecker
(2009-02-18)We obtain the formulae of covariances between random, introducing the Kronecker’s products: asymmetrical and antisymmetrical. -
Program Implementation of the Rating Methods of Preference Ranking
(2012-03-02)Tide charts, based upon harmonic analysis, is the general method of choice for predicting water levels. In the shallow waters of the Gulf of Mexico, however, tide charts are woefully inadequate for the prediction of water ... -
Propiedades de un enfoque difuso para particionamiento con datos bimodales
(2010-04-09)It is presented a new fuzzy partitioning criterion for two-mode data and an algo-rithm is formulated for its optmization. We study the convergence properties of themethod. The method was tested on real data. It is ... -
Proposición de índices difusos en la clasificación jerárquica ascendente
(2012-03-29)En el artículo se proponen índices para selecciónar las particiones de una clasificación automática jerárquica ascendente, para dirigir la interpretación de jerarquías a las particiones más relevantes en un cierto sentido. ... -
Puntos fijos hiperbólicos de un difeomorfismo local del plano
(2009-02-18)An extension of J. Palis’ lambda-lemma is obtained for one case of non-transversal intersection of the stable and unstable manifolds of an hyperbolic fixed point of a C2 local diffeomorphism of R2. -
Recursive formulas for partition functions
(2012-03-29)A family of functions, which share many properties with the classical partition function p(n), is studied. It is explained why these functions may be called “partition functions” and, in particular, some recursive formulas ...