Now showing items 41-60 of 312

• #### Sensibility concept for the discrete case in the cost sharing problem ﻿

(2013-08-29)
Suppose that a vector is produced jointly. We will consider the problem of dividing the cost of production among a group of components. In this paper we characterized a solution through two axioms, s-sensibility and ...
• #### Sobre una construcción de un monoide libre con identidad sobre un topos E con el objeto de los números naturales ﻿

(2013-04-04)
We proved that the free moniod with identify in X isM(X)= R \in \Omega^{NxNxX/R} es funcional y \_n \in N dom R=(n)} -----> ix  \Omega^{NxNxX/R}.
• #### The use of multilayer perceptrons for statistical modeling SO_2 non linear time series in Salta Capital, Argentina ﻿

(2013-04-04)
In this paper a statistical study of phisical-chemistry variables connected with enviroment pollution, specifically SO2 monthly average concentration, measured in Salta Capital city, Argentina, together with NO2 and O3 ...
• #### Estimación de parámetros de regresión no lineal mediante colonia de abejas artificiales ﻿

(2013-04-04)
Este trabajo presenta los resultados de la técnica heurística de ABC (Artificial Bee Colony) utilizada para estimar los parámetros de modelos de regresión no lineal. El algoritmo fue probado sobre 27 bases de datos de la ...
• #### One-side oscillation strategic approach ﻿

(2013-04-04)
This paper reports an approach developed to find a good quality solution for a generalized assignment problem with application to the Dimensional Cutting Problem. The objective at the Cutting Problemis to divide different ...
• #### Simulation of decametric wave propagation in the ionospheric plasma ﻿

(2013-04-04)
The decametric radiowaves propagation in the ionospheric plasmawas considered. Bicharacteristic system of equations was used in themodeling ray structures. This system, which allows finding the raypaths with great precision, ...
• #### Pattern equation method for the solution of electromagnetic scattering by axially-symmetric particles with complex anisotropic surface impedance ﻿

(2013-04-04)
The pattern equation method (PEM) has been extended to solve the scattering problems of electromagnetic waves by particles with mixed anisotropic surface impedance. Thus, the anisotropic impedance boundary conditions are ...
• #### A note on $k$-finite objects in a boolean topos with the natural numbers object ﻿

(2012-07-01)
We prove that every $k$-finite object in a boolean topos with nat-ural number object is internally the quotient of a natural number object.Keywords: Topoi, $k$-finite objects, natural numbers.Mathematics Subject Classification: ...
• #### Application of a cognitive model of emotional appraisal to the board evaluation function of a program that plays chess ﻿

(2012-07-01)
This paper describes the analysis and design of a cognitive emotional assesment model. This model is based on the goals looked for a chess player during a game. The model affects the output of the board evaluation function ...
• #### New geometrical compactness measures for zones design ﻿

(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 ...
• #### Variants of the mixed postman problem solvable using linear programming ﻿

(2012-07-01)
Given a connected mixed graph with costs on its edges and arcs, the mixed postman problem consists of finding a minimum cost closed tour of the mixed graph traversing all of its edges and arcs. It is well-known that this ...
• #### Time-frequency methods based on the wavelet transform ﻿

(2012-07-01)
The information contained in an analog signal is reveled by its numerical representation. The Fourier pair, in two complementary representations, expounds time and frequency structures. However, to detect and characterize ...
• #### Lagrangean relaxation for the geographical partitioning problem ﻿

(2012-07-01)
Among methodologies used in territory clustering, stand location-allocation and set partitioning models, to group small geographic areas, usually called “basic units” into a given number of larger groups called “territories”. ...
• #### Asymptotical analysis and Padé approximation in problems on diffusion-controlled cracks propagation ﻿

(2012-07-01)
In this work, we consider the diffusion-controlled axisymmetric fracture in an infinite space, and half-space. An important example of diffusion-controlled fracture growth is given by hydrogen induced cracking. In metals, ...
• #### Implementation of LDG method for 3D unstructured meshes ﻿

(2012-07-01)
This paper describes an implementation of the Local Discontinuous Galerkin method (LDG) applied to elliptic problems in 3D. The implementation of the major operators is discussed. In particular the use of higher-order ...
• #### Ttsunami. An Interesting Mathematical Problem ﻿

(2012-03-12)
We present some key aspects regarding the mathematics and the computational tool that support the complex description of the physical process tsunami from two specific approaches. In particular, it addresses analytically ...
• #### Influence Factors in Private Investment in El Salvador ﻿

(2012-03-12)
According to many empirical studies, one aspect that determines the foundations of economic cycles in the short and medium term is the investment of capital goods since it belongs to an aggregate demand and explains the ...
• #### Small data existence for the Boltzmann Equation in $L^{1}$ ﻿

(2012-03-11)
An existence theorem for the Boltzmann Equation with force term and small initial data is proved in an $L^{1}$ setting
• #### On the Cramér–Von Mises Statistic ﻿

(2012-03-11)
Probably, one of the most useful criterions in order to compare distribution functions is the one introduced by the researchers Harald Cramér and Richard Edler von Mises which is known as Cramérvon Mises criterion $(C_M)$. ...
• #### 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 ...