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Regularidad local del Mercado de índices para la crisis económica de 2008
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 ...
Funciones periódicas, cuasiperiódicas y clasificación de funciones
Funciones periódicas, cuasiperiódicas y clasificación de funciones
(2009-02-18)
In this work we present some significative sets of functions. Following the ideas of [2] we introduce the almost periodic functions and its elementary properties. Based in [12] we give a clasification of the sets.
NONLINEAR FILTERS TO RECONSTRUCT ELECTROCARDIOGRAM SIGNALS
FILTROS NO LINEALES PARA RECONSTRUIR SEÑALES DE ELECTROCARDIOGRAMAS
(2014-07-01)
ECG signals have been used in cardiac pathology to detect disease heart. The main objective of this paper is to propose signal filtering techniques to reduce noise, extract information, to reconstruct the states and ...
A method for analyzing turbulence models
(2009-02-19)
In this article we introduce a concept based on the differential constraints methodto examine the closure procedure in Turbulence Models. We show how this conceptmay be applied to study the problem of interaction and mixing ...
Descripción de dos métodos de rellenado de datos ausentes en series de tiempo meteorológicas
(2009-02-27)
Se presentan dos metodolog´?as para el rellenado de datos ausentes, enfocadas haciasu uso en series de tiempo geof´?sicas. La primera se basa en la descomposici´on encomponentes principales de la matriz de correlaci´on de ...
Special software for computing the special functions of wave catastrophes
Software especial para calcular las funciones especiales de catástrofes de olas
(2015-01-01)
The method of ordinary differential equations in the context of calculating the special functions of wave catastrophes is considered. Complementary numerical methods and algorithms are described. The paper shows approaches ...
MATHEMATICAL MODEL FOR TOXIN TRANSPORT IN A MARINE FOOD CHAIN
MODELO MATEMÁTICO DEL TRANSPORTE DE UNA TOXINA EN UNA RED TRÓFICA MARINA
(2014-07-01)
Some cases of poisoning by consumption of contaminated fish, like the Ciguatera poisoning, occur unexpectedly and they are not easy to detect previously since the fish that carry the toxin do not have appearance and/or ...
La teoría de respuesta a los itemes: una moderna alternativa para el análisis psicométrico de instrumentos de medición
(2009-02-19)
La Teoría de Respuesta a los Itemes, TRI, (o "Item Response Theory", en inglés) es un enfoque más poderoso que la Teoría Clásica de los Tests para el análisis de calidad técnica de instrumentos de medición psicométricos. ...
New geometrical compactness measures for zones design
Nuevas medidas de compacidad geométrica para el diseño de zonas
(2012-07-01)
The design of compact zones has been studied because of its influence in the creation of zones with regular forms, which are easier to analyze, to investigate or to administer. This paper propose a new method to measure ...
Problemas matemáticos sugeridos por la genética y la ecología de poblaciones
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 ...