Revista de Matemáticas 10(1 y 2)
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An enumerative procedure for identifying maximal covers
(2009-02-20)In this paper we present an enumerative procedure for identifying all maximalcovers from the set of covers implied by a 0-1 knapsack constraint. The inequalitiesinduced by these maximal covers are not dominated by the ... -
El problema del conjunto independiente en la selección de horarios de cursos
(2009-02-20)Registration process at the Universidad Aut´onoma Metropolitana is such thatevery student is free to choose his/her own subjects and schedule. Success of thissystem, based in the percentage of students that obtain a place ... -
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 ... -
El problema del multicubrimiento: una aplicación para la selección de paradas en la red de transporte de la Ciudad de México
(2009-02-20)In this paper an heuristic algorithm is developed. Its implementation is developedas well, in order to solve a sampling problem in the urban transportation network in Mexico City. The problem consist of the selection of ... -
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 ... -
Herramientas matemáticas para la valoración de la ampliación de una infraestructura portuaria
(2009-02-20)infraestructuraportuaria ya consolidada, que conlleva unas inversiones a largo plazo.Para ello hay que recurrir a medios de an´alisis capaces de recoger, en la medidade lo posible, la incertidumbre sobre la futura evoluci´on ... -
Un método para la caracterización exhaustiva de formas de figuras planas, tanto simple como múltiplemente conexas
(2009-02-20)This article presents a method with which the shapes of plane figures may becharacterized exhaustively by using descriptive mathematical entities obtained fromthese figures. They may be either simply or multiply connected. ... -
Los valores del juego de parada óptima para medias aritméticas de variables de Bernoulli
(2009-02-20)We study optimal stopping problems for generalized averages of identically distributedBernoulli variables, taking values in the set D = {d0, d1}. We obtain a recurrentformula in the finite horizon case, which gives the ... -
A comparison of approximations to percentiles of the noncentral chi2-distribution
(2009-02-20)Various approximations to percentiles of the noncentral 2-distribution are examinedfor their accuracy over a wide range of values of the parameters of the distribution.Keywords: Probability distribution, percentiles, ... -
Sobre el problema inverso de difusión
(2009-02-20)Infiltration is physically described in order to model it as a diffusion stochasticprocess. Theorem M-B 1 is enunciated; whose main objective is the inverse diffusionproblem. The theorem is demonstrated in the specific ... -
Estrategia para la selección de modelos gráficos en tablas de contingencia no estructuradas
(2009-02-20)Loglinear models are frequently utilized in the analysis of association patterns betweenvariables in a multidimensional contingency table. Discrete graphical modelsare fashionable. They are a subset of the hierarchical ... -
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 ... -
Método heurístico para particionamiento óptimo
(2009-02-20)Many data analysis problems deal with non supervised partitioning of a data set,in non empty clusters well separated between them and homogeneous within the clusters.An ideal partitioning is obtained when any object can ... -
Métodos de optimización del stress. Comparaciones usando disimilitudes tipo intervalo
(2009-02-20)By the use of simulated annealing it is defined the algorithm MDSI-SS for the optimization of Stress defined by Donoeux and Masson [6] for interval-type dissimilarities.On three data sets it is compared the value of stress ...
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