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Puntos fijos hiperbólicos de un difeomorfismo local del plano
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.
Bounded Variables nonlinear Multiple Criteria Optimization using Scatter search
Bounded Variables nonlinear Multiple Criteria Optimization using Scatter search
(2011-05-06)
This paper introduces an adaptation of multiple criteria scatter search to deal with nonlinear continuous vector optimization problems on bounded variables, applying Tabu Search approach as diversification generator method. ...
Metodología estadística: bases para el establecimiento de políticas adecuadas para el manejo del arbolado urbano en la Ciudad de México
Metodología estadística: bases para el establecimiento de políticas adecuadas para el manejo del arbolado urbano en la Ciudad de México
(2009-02-20)
An Exploratory analysis using arboricultural and ecological statistical approachesof a representative sample of Mexico City’s street trees were followed by a confirmatorystudy through Path Analysis to test hypothesis stating ...
Una variante del método que utiliza la simulación de un proceso de difusión para la caracterización de formas de figuras planas
Una variante del método que utiliza la simulación de un proceso de difusión para la caracterización de formas de figuras planas
(2009-02-20)
This is a variation of a previously presented method [1] for characterizing the shapesof plane figures. In addition to retaining the advantages of the original method, thisvariant includes one more: it is no longer necessary ...
Fitting non-gaussian Models to Financial data: An Empirical Study
Fitting non-gaussian Models to Financial data: An Empirical Study
(2011-04-29)
In this paper are presented some experiences about the modeling of financial data by three classes of models as alternative to Gaussian Linear models. Dynamic Volatility, Stable L'evy and Diffusion with Jumps models are ...
Latent class analysis in sparse data: alcohol, tobacco and other drugs in teenagers
Análisis de clases latentes en tablas poco ocupadas: consumo de alcohol, tabaco y otras drogas en adolescentes
(2010-04-16)
The contribution of this study is the multidimensional approachon patterns of drug use among young people. The data come fromthe study ”Factors that influence the consumption of drugs, juvenilepopulation. Central region ...
Clasificacion automática simbólica por medio de algoritmos genéticos
Clasificacion automática simbólica por medio de algoritmos genéticos
(2010-04-09)
This paper presents a variant in the methods for clustering: a genetic algorithm forclustering through the tools of symbolic data analysis. Their implementation avoidsthe troubles of clustering classical methods: local ...
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 ...
Métodos de punto interior para optimización cuadrática convexa con matrices no definidas positivas
Métodos de punto interior para optimización cuadrática convexa con matrices no definidas positivas
(2009-02-25)
In this article a modification of the recursive algorithm of Cholesky is obtainedthat allows the factorization of Semi Definite Positive Matrices, even though theseare not positive defined, without increasing the computational ...
A multistep fundamental solution scheme for modeling groundwater flow
(2009-02-27)
A new numerical scheme for solving transient pressure in a confined aquifer ispresented. It is based on the fundamental solution method (FSM) and it combinesfree Green functions, superposition principle, and singular value ...