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Mostrando ítems 1-9 de 9
Artículo
Locating an undesirable facility by generalized cutting planes
(Informs, 1998-08-03)
We address the problem of locating an undesirable facility within a compact set by minimizing a strictly decreasing boundedly lower subdifferentiable function of the squared Euclidean distances to a set of fixed points. ...
Artículo
Local influence on the general linear model
(Indian Statistical Institute, 1998)
We study the Local Influence on the General Linear Model with a perturbation scheme in the variance-covariance matrix of the random errors. The comparison of the results obtained and the conditional bias have been used to ...
Artículo
Polynomial algorithms for parametric minquantile and maxcovering planar location problems with locational constraints
(Springer, 1998-12-01)
A location is sought within some convex region of the plane for the central site of some public service to a finite number of demand points. The parametric maxcovering problem consists in finding for eachR>0 the point from ...
Artículo
Location and shape of a rectangular facility in ℝn. Convexity properties. Convexity properties
(Springer, 1998-01-01)
In this paper we address a generalization of the Weber problem, in which we seek for the center and the shape of a rectangle (the facility) minimizing the average distance to a given set (the demand-set) which is not assumed ...
Artículo
Maximin location: discretization not always works
(Springer, 1998-01-01)
In this note we show by means of a simple example that, if the maximin problem with (nonlinear) concave increasing utility functions is solved by inspecting the extreme points of the (generalized) Voronoi diagram (as usually ...
Artículo
Admission Policies in Loss Queueing Models with Heterogeneous Arrivals
(INST OPERATIONS RESEARCH MANAGEMENT SCIENCES, 1998-03)
In this paper we consider a loss system where the arrivals can be classified into different groups according to their arrival rate and expected service time. While the standard admission policy consists of rejecting only ...
Tesis Doctoral
Avances sobre el problema de localización continua de un único centro
(1998)
"El objetivo de la Teoría de la Localización consiste en determinar una o varias localizaciones para uno o más servicios con respecto a un conjunto de ubicaciones conocidas a priori, que usualmente denominamos puntos de ...
Artículo
Dominating sets for convex functions with some applications
(Springer, 1998-02)
A number of optimization methods require as a rst step the construction of a dominating set (a set containing an optimal solution) enjoying properties such as compactness or convexity. In this note we address the problem ...
Artículo
A note on the optimal positioning of service units
(INST OPERATIONS RESEARCH MANAGEMENT SCIENCES, 1998-02-01)
In this paper we address the problem of locating p mobile service units in an n-dimensional space minimizing the expected response time. It is shown that an optimal solution to the problem is a degenerate distribution for ...