Envíos recientes

  • Evaluación de un algoritmo de recocido simulado con superficies de respuestas 

    Loranca, Maria Beatriz Bernábe; Espinosa Rosales, José E.; Ramírez Rodríguez, Javier (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 ...
  • Shipment consolidation by terminals and vehicles 

    González Ramírez, Rosa G.; Askin, Ronald G.; Smith, Neale R.; Villalobos, René (2009-02-27)
    This project designs and implements a new module in a logistics analysis tool called”Logistika” that was developed by some graduate students in ASU. Initially, Logistikaonly had available a “Plant location module”, but ...
  • Un procedimiento de fuerte reducción de las dimensiones del RCPS/Pi 

    Álvarez Valdés Olaguíbel, Ramón; Crespo, Enric; Tamarit Goerlich, José Manuel; Villa Juliá, M. Fulgencia (2009-02-27)
    Recently, in the field of project scheduling problems the concept of partially renewableresources has been introduced. Theoretically, it is a generalization of both renewable and non-renewable resources. From an applied ...
  • The BPS preconditioner on Beowulf cluster 

    Salas-Huertas, Oscar; Marazzina, Daniele; Rovida, Sergio; Sacchi, Giovanni; Scacchi, Simone (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. ...
  • A multistep fundamental solution scheme for modeling groundwater flow 

    Guevara-Jordan, Juan M.; Da Silva-Rodrigues, Carmen M. (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 ...
  • Minimization of the first eigenvalue in problems involving the bi-laplacian 

    Anedda, Claudia; Cuccu, Fabrizio; Porru, Giovanni (2009-02-27)
    This paper concerns the minimization of the first eigenvalue in problems involvingthe bi-Laplacian under either homogeneous Navier boundary conditions or homogeneousDirichlet boundary conditions. Physically, in case of N ...
  • Las ecuaciones de Reynolds y la relación de clausura 

    Mercado Escalante, José Roberto (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 ...
  • Predicción estacional del clima en Centroamérica mediante la reducción de escala dinámica. Parte II: aplicación del modelo MM5V3 

    Rivera Fernández, Erick; Amador Astúa, Jorge Alberto (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 ...
  • Indices of regularity and indices of randomness for m-ary strings 

    Skliar, Osvaldo; Monge, Ricardo E.; Oviedo, Guillermo; Medina, Víctor (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 ...
  • Descripción de dos métodos de rellenado de datos ausentes en series de tiempo meteorológicas 

    Alfaro Martínez, Eric J.; Soley, F. Javier (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 ...
  • Detection of unobserved heterogeneity with growth mixture models 

    Reinecke, Jost; Mariotti, Luca (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 ...
  • El método Statis como alternativa para detectar "response shift" en estudios de calidad de vida relacionada con la salud 

    Vicente Galindo, María Purificación; Galindo Villardón, María Purificación (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 ...
  • Árboles de clasificación para el análisis de gráficos de control multivariantes 

    Gámez Martínez, Matías; Alfaro Cortés, Esteban; Alfaro Navarro, José Luis; García Rubio, Noelia (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 ...