Listar Revista de Matemática: Teoría y Aplicaciones por título
Mostrando ítems 228-247 de 319
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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 ... -
Regresion PLS y PCA como Solucion al Problema de Multicolinealidad en Regresion Multiple
(2011-03-18)We present and compare principal components regression and partial least squares regression, and their solution to the problem of multicollinearity. We illustrate the use of both techniques, and demonstrate the superiority ... -
Regresión y análisis factoriales
(2009-02-19)Some recent developments in factor analysis of multi-sets are introduced in this short course. The more usual factor analyses are based on the singular values de-composition. So, the analyses of two matrices here are ... -
Regularidad local del Mercado de índices para la crisis económica de 2008
(2012-03-08)There is evidence that signals from financial markets, such as stock indices, interest rates or commodities, have a multifractal nature. In recent years, many efforts have been made to relate the inefficiency of markets ... -
Relations of k-th derivative of dirac delta in hypercone with ultrahyperbolic operator
(2009-02-18)In this paper we prove that the generalized functions d (k) (P+) - d (k) (P), d (k) (P-)-d (k) (-P) and d 1 (k) (P)-d 2 (k) (P)d are concentrated in the vertex of the cone P=0 and we find their relationship with the ... -
Repeating games and dynamical systems in oil market
(2010-04-16)We use the modern theory of repetitive games in a model that help understand a market with a cartel like OPEP. We also study a dynamical system Lotka-Volterra type, and we analyze the dynamic behavior of the model. -
Rigidez de una superficie con puntos singulares
(2009-02-20)The infinitesimal isometric deformations of a type of surface with singular pointsare considered and a sufficient condition of rigidity of such surfaces is demonstrated.Keywords: Surface with singular points, Gauss formula, ... -
Robustez de los índices de ajuste del análisis factorial confirmatorio a los valores extremos.
(2020)El objetivo de este trabajo es evaluar la robustez de varios índices de ajuste del Análisis Factorial Confirmatorio (SRMR, RMSEA, TLI, CFI y GFI) a la presencia de valores extremos. Para el alcance del objetivo se planteó ...