Journal: Pesquisa Operacional

Found 223 papers in total
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...
Transgenetic computations: an application to the quadratic allocation problem
Transgenetic computations: an application to the quadratic allocation problem
2002,
This paper introduces the Computational Transgenetic approach. The metaphor is based...
The use of surrogate and Lagrangean relaxations in integer programming problems
The use of surrogate and Lagrangean relaxations in integer programming problems
2002,
Relaxations of an integer programming problem produce bounds on its optimal solution....
Models of inventory centralisation for the Petrobras supply logistic of exploration and production
Models of inventory centralisation for the Petrobras supply logistic of exploration and production
2001,
This paper analyses some key aspects of the supply logistics for the upstream segment...
A Markovian decision model for optimizing a maintenance system with Coxian repair times and non-observable phases
A Markovian decision model for optimizing a maintenance system with Coxian repair times and non-observable phases
2001,
In this paper we analyze a manufacturing system with two different servers. The times...
Optimization of resources for the operation of installing anchors of offshore equipment
Optimization of resources for the operation of installing anchors of offshore equipment
2002,
In this work is explored a planning methodology for deep water anchor lines deployment...
Decision-making process under uncertainty in international investments in offshore exploration & production of petroleum: a multicriteria approach
Decision-making process under uncertainty in international investments in offshore exploration & production of petroleum: a multicriteria approach
2005,
This paper presents the theoretical developments in techniques of decision-making...
Data envelopment analysis models with limited variable or constant sum
Data envelopment analysis models with limited variable or constant sum
2005,
In this work we present two DEA (Data Envelopment Analysis) models in which a new...
Uniformization of the border-efficient in models of analysis of data envelopment analysis with earned zero-sum and constant scale returns
Uniformization of the border-efficient in models of analysis of data envelopment analysis with earned zero-sum and constant scale returns
2005,
When using Zero Sum Gains DEA models (ZSG-DEA), classical DEA models restriction of...
Assessment of the size of Portuguese airports with multicriteria relations of overrun
Assessment of the size of Portuguese airports with multicriteria relations of overrun
2005,
In airport studies it is quite common to define categories of airports according to...
Rapid-transit efficiency analysis with the assurance-region DEA method
Rapid-transit efficiency analysis with the assurance-region DEA method
2001,
Rapid-transit services are a relevant part of the transportation network in most...
The hypercube model: analysis and results for the case of homogeneous non-servers
The hypercube model: analysis and results for the case of homogeneous non-servers
2001,
The objective of the present paper is to analyze the use and solution of the hypercube...
Using MCDA methods THOR in an application for outranking the ballast water management options
Using MCDA methods THOR in an application for outranking the ballast water management options
2005,
The Multicriteria Analysis Methodology has been developed in order to support and...
Multicriteria modeling for selection of preventive maintenance intervals, based on the multiattribute utility theory
Multicriteria modeling for selection of preventive maintenance intervals, based on the multiattribute utility theory
2005,
The problem of interval selection for preventive maintenance has been analysed through...
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