Country: Brazil

Found 369 papers in total
A contribution of the ELECTRE TRI method to the classification of industrial risk
A contribution of the ELECTRE TRI method to the classification of industrial risk
2007,
Risk classification is a relevant problem in industrial context. The complexity of...
Partial productivity ordinal aggregation: A case study with family farmers
Partial productivity ordinal aggregation: A case study with family farmers
2007,
Productivity is the most usual indicator to measure agricultural performance. In this...
Hard validation of soft OR methodologies
Hard validation of soft OR methodologies
2008,
In order to subsist and be successful in this environment with greater complexity and...
Some rankings for the Athens Olympic Games using DEA models with a constant input
Some rankings for the Athens Olympic Games using DEA models with a constant input
2008,
There is no official method to establish a final ranking for the Olympic games. The...
Optimal pricing and ordering policies for deteriorating items under a progressive trade credit scheme
Optimal pricing and ordering policies for deteriorating items under a progressive trade credit scheme
2008,
In this paper, a mathematical model is developed to formulate optimal pricing and...
Dynamic location problems with discrete expansion and reduction sizes of available capacities
Dynamic location problems with discrete expansion and reduction sizes of available capacities
2007,
In this paper a dynamic location problem is formulated that considers the possibility...
Optimal design of a bulk service queue
Optimal design of a bulk service queue
2007,
This paper uses a control–theoretic approach, the so–called predictive...
Fraud detection in energy distribution using support vector machines
Fraud detection in energy distribution using support vector machines
2007,
Several economics sectors are exposed to fraud made by their own customers. At the...
Electricity price forecasting through artificial neural networks
Electricity price forecasting through artificial neural networks
2007,
In this paper, a computational tool based on artificial neural networks is presented...
Comparing the principal components analysis to the CATPCA in the passenger's satisfaction
Comparing the principal components analysis to the CATPCA in the passenger's satisfaction
2007,
The main purpose of this article is to confront the results of the Principal...
Positive mathematical programming: An instrument for calibration and prescription of agricultural supply models
Positive mathematical programming: An instrument for calibration and prescription of agricultural supply models
2008,
In this paper, calibration and prescription capacity of different types of positive...
Exact penalty methods for nonlinear optimization problems
Exact penalty methods for nonlinear optimization problems
2008,
In this work we present a classification of some of the existing Penalty Methods...
Initial electronic spare parts stock and consumption forecasting
Initial electronic spare parts stock and consumption forecasting
2008,
There is a consensus that conventional continuous demand distribution methods are not...
Lot-sizing problem with several production centers
Lot-sizing problem with several production centers
2005,
In this paper, a case study is carried out concerning the lot-sizing problem involving...
Directed hypergraph planarity
Directed hypergraph planarity
2005,
Directed hypergraphs are generalizations of digraphs and can be used to model binary...
Optimization in the patterns of cutting sheets of wood fiber reconstituted: a case study
Optimization in the patterns of cutting sheets of wood fiber reconstituted: a case study
2005,
Hardboard factories transform eucalyptus into rectangular plates by means of processes...
Optimization integrated approaches to the problems of generation and sequencing patterns of cutting: unidimensional case
Optimization integrated approaches to the problems of generation and sequencing patterns of cutting: unidimensional case
2005,
The cutting pattern generating problem (or cutting stock problem) consists in...
Determination of the optimal solution of the problem of optimal power flow by sensitivity analysis
Determination of the optimal solution of the problem of optimal power flow by sensitivity analysis
2005,
We propose in this work an approach for solving the perturbed Optimal Power Flow (OPF)...
Evaluation of a measure of evidence of a point of change and its use in identifying changes in crime rates in the city of Belo Horizonte
Evaluation of a measure of evidence of a point of change and its use in identifying changes in crime rates in the city of Belo Horizonte
2005,
The posterior probability of each instant being a change point was proposed by Loschi...
A characterization of immersible graphs
A characterization of immersible graphs
2005,
This paper is motivated by the result of Berge who generalized Tutte's theorem which...
An algorithm to generate all spanning trees of a graph in order of increasing cost
An algorithm to generate all spanning trees of a graph in order of increasing cost
2005,
A minimum spanning tree of an undirected graph can be easily obtained using classical...
Algorithms for the problem of non-capacitated flows with fixed costs in arcs: a statistical comparison
Algorithms for the problem of non-capacitated flows with fixed costs in arcs: a statistical comparison
2001,
This paper is concerned about empirical comparisons of algorithms, one of the most...
Methods of dual simplex type for linear optimization problems of flow
Methods of dual simplex type for linear optimization problems of flow
2005,
In this paper we study the linear optimization problem lower and upper constrained...
The bag compartmented problem and applications
The bag compartmented problem and applications
2002,
The Compartmentalized Knapsack Problem is a variation of the classical knapsack...
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