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Análisis del peso de los recién nacidos en Puerto Rico usando regresión a cuantiles
(2018-10-31)
This project illustrates the use of the grouped Smoothly Clipped Absolute De-
viation (SCAD), a variable selection method based on regularization, in quantile
regression to model the weight of newborns in Puerto Rico in ...
Reissner’s plate theory in the framework of asymmetric elasticity
(2007)
The purpose of this thesis is to develop a new mathematical model for the bend- ing of thin elastic plates with microstructure. Our approach is based on a generalization of the classical Reissner plate theory, which takes ...
Modelo con retraso y correlación cruzada para predecir intensidad de la lluvia a corto plazo
(2012-08)
El uso de los sistemas de cómputo, permitido el mejor acondicionamiento de las predicciones que se realizan de los fenómenos atmosféricos. Sin embargo, aún este tipo de predicciones es un reto que se les presenta a la ...
A connection between algebraic structures and propositional logic
(2006)
In this project, the relationship between propositional logic using theories and models, and algebraic structures, such as groups, rings, lattices, R-modules and algebras, including Boolean Algebras, has been studied. From ...
Regiones en el plano complejo tipo Gershgorin
(2008)
En 1931 Semion A. Gershgorin publicó un importante resultado en el algebra lineal que ahora es llamado “El Teorema de los Círculos de Gershgorin”. Este teorema establece que dada una matriz A = [ai,j ] ∈ Cn×n, sus autovalores ...
Análisis de la eficiencia de las instituciones de educación superior colombianas en la producción científica aplicando análisis envolvente de datos y redes bayesianos
(2011-08)
El Análisis Envolvente de Datos (DEA) es una herramienta no paramétrica fundamentada en elemen- tos de programación lineal que trata de capturar la eficiencia relativa de una serie de unidades de toma de decisión (DMU) la ...
A mathematical model on the spatial spread of Zika virus
(2021-05-14)
Zika virus, which belongs to the Flavivirus genus, of the Flaviviridae family, is
transmitted by the bite of the female Aedes Aegypti mosquitoes (vectors), as well
as sexually, although in laver quantities. This disease ...
Empirical comparison between multiple time series and functional data analysis
(2021-05-12)
Despite Functional data analysis being a competitor of time series analysis, it has been
found that in the last 15 years it has not been requested as much as multiple time series by the
scientific community. The main ...
Componentes principales supervisados para clasificación de datos de expresión genética
(2005)
The gene expression data obtained through the technology of microarrays are characterized by its considerably greater amount of features in comparison to the number of observations. The direct use of traditional statistics ...
Estimación de la proporción de una subpoblación oculta a través de muestreo por “bola de nieve” estratificado
(2008)
The inference process is inefficient when employing conventional sampling tech- niques to sample from hidden populations and those of difficult access. The method of sampling by reference or “Link-Tracing” (“Snowball ...