Journal: Pesquisa Operacional

Found 223 papers in total
A mixed method of nonlinear programming and its uses in the structural project of ocean structures
A mixed method of nonlinear programming and its uses in the structural project of ocean structures
1998,
This work contains a basic non-linear programming algorithm useful for the computer...
I–O stepwise method for selecting variables in data envelopment analysis models
I–O stepwise method for selecting variables in data envelopment analysis models
1999,
This work develops a new procedure for selecting input–output variables to be...
Iterative estimation of L1 regression parameters
Iterative estimation of L1 regression parameters
1998,
The L 1 estimator of the regression coefficients does not summarize the observations...
ARMA-GARCH models and trade rules for stock returns
ARMA-GARCH models and trade rules for stock returns
1999,
This paper deals with the analysis and modeling of daily returns time series from the...
Flux allocation in transportation networks using object oriented programming
Flux allocation in transportation networks using object oriented programming
1998,
This work presents the process of modeling a transportation network by making use of...
A model for minimizing feeding cost in beef cattle feedlots
A model for minimizing feeding cost in beef cattle feedlots
1998,
The finishing of beef cattle in feedlot is a procedure that has been used for...
Modeling of Brazilian financial series: Forecasting prices of some stocks
Modeling of Brazilian financial series: Forecasting prices of some stocks
1999,
The goal of this paper is modeling Brazilian financial time series as non-linear and...
Simulation modeling: A way of introducing operational research in average third world companies
Simulation modeling: A way of introducing operational research in average third world companies
1999,
In this paper a methodology is presented to overcome two problems found in average...
Multicriteria decision aid: The PROMETHEE-GAIA solution
Multicriteria decision aid: The PROMETHEE-GAIA solution
1999,
This paper gives an overview of the most attractive PROMETHEE methods for...
A optimal project of exponentially weighted moving averages charts for statistical process control
A optimal project of exponentially weighted moving averages charts for statistical process control
1998,
A method is presented for the design of EWMA schemes for statistical process control....
Dynamic programming algorithms for the parallel machine lot sizing problem
Dynamic programming algorithms for the parallel machine lot sizing problem
1997,
Several multi-item lot sizing problems can be decomposed into single-item subproblems....
Error minimization of the back-propagation algorithm applied to a motor maintenance problem
Error minimization of the back-propagation algorithm applied to a motor maintenance problem
1998,
The aim of this paper is to treat the preventive maintenance problem in squirrel-cage...
Iterative productivity modelling with performance appraisal
Iterative productivity modelling with performance appraisal
1997,
I develop here a new approach to the estimation of productivity coefficients and...
A relationship between global optimization and 0–1 nonlinear programming
A relationship between global optimization and 0–1 nonlinear programming
1997,
We present a relation between Global Optimization and 0–1 Nonlinear Programming....
Decision aiding: An Operational Research domain discipline?
Decision aiding: An Operational Research domain discipline?
1998,
In this paper we present succinctly the Multicriteria Decision Aiding approach. The...
Multiobjective covering and routing problems
Multiobjective covering and routing problems
1997,
In this paper, we review research on point location covering problems and their...
A transformation for solving a pattern sequencing in the wood cut industry
A transformation for solving a pattern sequencing in the wood cut industry
1997,
Consider a wood cutting setting where different panels have to be cut from large...
An approach for the cutting stock problem of hardboard sheets
An approach for the cutting stock problem of hardboard sheets
1998,
In this paper we present an appproach for the cutting stock problem of a Brazilian...
Enterprise based societal issues: The case of KARMET, a challenge to OR
Enterprise based societal issues: The case of KARMET, a challenge to OR
1998,
The privatization of KARMET and resultant formation of ISPAT KARMET (IK) has its...
Determination of routes for express delivery companies
Determination of routes for express delivery companies
1997,
A problem that must be solved by express delivery companies is the design of a...
Approaches for the container loading problem
Approaches for the container loading problem
1997,
The container loading problem consists of arranging items (boxes) of different sizes...
Optimal hedging of stock options in Brazil
Optimal hedging of stock options in Brazil
1997,
We consider the problem of hedging the market risk of options portfolios. There are...
An algorithm for the problem of bilevel programming
An algorithm for the problem of bilevel programming
1996,
In this work, we present a feasible descent algorithm for the Bilevel Programming...
Revealed preference and efficiency in the relationship among suppliers and clients
Revealed preference and efficiency in the relationship among suppliers and clients
1996,
Recent research has examined the impacts of co-markership and partnership on inter-...
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