Journal: Investigao Operacional

Found 215 papers in total
Tourist routes design: a heuristic approach to a case study
Tourist routes design: a heuristic approach to a case study
2003,
The problem of Tourist Routes Design involves defining circuits for a tourist wishing...
A new procedure for the calculation of the compartmented knapsack problem
A new procedure for the calculation of the compartmented knapsack problem
2002,
It considers the classic knapsack problem. It admits that items must be grouped in...
Operational research approaches for strategy development and planning: An introduction
Operational research approaches for strategy development and planning: An introduction
2002,
Strategy development, planning, and multicriteria are important concepts within...
Analysis of the importance of the lifetime distribution on the inspection period in statistical quality control
Analysis of the importance of the lifetime distribution on the inspection period in statistical quality control
2002,
In this paper we analyse the influence of some lifetime models, with different failure...
On some variations of the total earliness/tardiness problem
On some variations of the total earliness/tardiness problem
2002,
In this paper we consider a version of the total earliness/tardiness problem in which...
Sales modelling of consumer products: An application to the personal hygiene paper market
Sales modelling of consumer products: An application to the personal hygiene paper market
2002,
This paper presents the development of regression models to explain the sales of two...
Assessing the performance of control charts for monitoring customer satisfaction survey data
Assessing the performance of control charts for monitoring customer satisfaction survey data
2002,
This paper discusses the use of control charts in monitoring customer satisfaction...
A remarkable property of the dynamic optimization extremals
A remarkable property of the dynamic optimization extremals
2002,
We give conditions under which a function F(t,x,u,ψ 0 ,ψ) satisfies the...
Neighborhood structures and local search for the maximum clique problem
Neighborhood structures and local search for the maximum clique problem
2002,
The Maximum Clique is an NP-hard problem aiming at finding the largest complete...
A heuristic for the bus driver scheduling problem
A heuristic for the bus driver scheduling problem
2002,
In this paper a flexible and interactive heuristic for the bus crew scheduling problem...
Integrating GIS and MCDA to choose the best municipal district
Integrating GIS and MCDA to choose the best municipal district
2002,
This paper presents an application of the integration between Geographical Information...
Model identification of Gaussian neural networks in forecasting
Model identification of Gaussian neural networks in forecasting
2002,
Supervised artificial neural networks are, essentially, nonlinear regression...
Machine and labour planning in layout design
Machine and labour planning in layout design
2002,
In this paper the authors describe a model included in a plant layout design support...
Optimal signal sets via semi-infinite programming
Optimal signal sets via semi-infinite programming
2002,
The optimal signal set problem has been formulated as a nonlinear programming problem...
Seismic alarm system based on local seismicity and recent seismic past
Seismic alarm system based on local seismicity and recent seismic past
2002,
A Seismic Alarm System for the Iberian Peninsula was proposed. Given the seismic...
Sensitivity to criteria weighting in an MCDM problem of water resources planning
Sensitivity to criteria weighting in an MCDM problem of water resources planning
2001,
Multicriteria Decision Making techniques are here applied to establish the volume of a...
An algorithm for calculating k shortest paths with a maximum number of arcs
An algorithm for calculating k shortest paths with a maximum number of arcs
2001,
In multiexchange telecommunication networks the problem of calculating shortest paths...
Fuzzy optimization with simulated annealing
Fuzzy optimization with simulated annealing
2001,
The Simulated Annealing (SA) algorithm is an adequate tool for solving fuzzy...
A general generator of project networks in terms of their morphological features
A general generator of project networks in terms of their morphological features
2001,
Most methods of project scheduling are based on algorithms (such as branch and bound...
The technical efficiency of the Portuguese post: A DEA methodology application
The technical efficiency of the Portuguese post: A DEA methodology application
2001,
The main purpose of this study is to measure the technical efficiency of the...
A case of integration GIS–DEA–MCDA: Measuring a university influence in the cities of the State of Rio de Janeiro
A case of integration GIS–DEA–MCDA: Measuring a university influence in the cities of the State of Rio de Janeiro
2001,
Widespread use of Data Envelopment Analysis is hampered by the difficulty felt by...
Regional disparities in continental Portugal: A multivariate statistical analysis
Regional disparities in continental Portugal: A multivariate statistical analysis
2001,
The aim of this article is to find a coherent socio-economic classification of the...
Simulation model for the management of a multi-echelon repairable item inventory system
Simulation model for the management of a multi-echelon repairable item inventory system
2001,
A lot of multi-echelon inventory models for repairable items have been developed for...
A new improvement for a K-shortest paths algorithm
A new improvement for a K-shortest paths algorithm
2001,
The K shortest paths problem is a well known network optimization problem where it is...
Papers per page: