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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 ...
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 ...
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 ...
El método Statis como alternativa para detectar "response shift" en estudios de calidad de vida relacionada con la salud
El método Statis como alternativa para detectar "response shift" en estudios de calidad de vida relacionada con la salud
(2009-02-27)
After evaluating problems in conceptualisation of Quality of Life outcomes andestablishing an operational definition of HRQoL, we focus the attention on the different dimensions of Response Shift and the theoretical Models ...
Indices of regularity and indices of randomness for m-ary strings
Indices of regularity and indices of randomness for m-ary strings
(2009-02-27)
The notions “regularity index” and “randomness index” previously introduced forbinary strings (2-ary) have been modified slightly and generalized for m-ary strings(m = 2, 3, 4, . . .). These notions are complementary and ...
Evaluación de un algoritmo de recocido simulado con superficies de respuestas
Evaluación de un algoritmo de recocido simulado con superficies de respuestas
(2009-02-27)
The solution of the geographical clustering problem includes a combinatorial classificationof the geographical units. The aggregation proposed in this work requiresan objective function that minimizes the distance between ...
Árboles de clasificación para el análisis de gráficos de control multivariantes
Árboles de clasificación para el análisis de gráficos de control multivariantes
(2009-02-27)
In statistical quality control, one of the most widely used tools are the controlcharts. The main problem of the multivariate control charts lies in that they onlyindicate that a change in the process has happened, but ...
The BPS preconditioner on Beowulf cluster
The BPS preconditioner on Beowulf cluster
(2009-02-27)
This work presents the implementation on a Linux Cluster of a parallel preconditionerfor the solution of the linear system resulting from the finite element discretizationof a 2D second order elliptic boundary value problem. ...
Las ecuaciones de Reynolds y la relación de clausura
Las ecuaciones de Reynolds y la relación de clausura
(2009-02-27)
We posed the problem to obtain the closure relation for the Reynolds equations.And like secondary target, to obtain analytical expressions for the Reynolds stress.Showing its jump of discontinuity like expression of the ...
Detection of unobserved heterogeneity with growth mixture models
Detection of unobserved heterogeneity with growth mixture models
(2009-02-27)
Latent growth curve models as structural equation models are extensively discussedin various research fields (Duncan et al., 2006). Recent methodological and statisticalextension are focused on the consideration of unobserved ...