Journal: Investigao Operacional

Found 215 papers in total
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...
Discretization methods for semi-infinite programming
Discretization methods for semi-infinite programming
2001,
Discretization methods represent an important class of methods to solve semi-infinite...
Multicriteria analysis for an aggregate planning production model
Multicriteria analysis for an aggregate planning production model
2001,
This paper presents a mixed integer multiple objective linear programming model in the...
A multiobjective model for energy planning based on input–output analysis – an application to the Portuguese case
A multiobjective model for energy planning based on input–output analysis – an application to the Portuguese case
2001,
A macro-level energy model and its application to energy planning in Portugal is...
Voice recognition using a fuzzy multiple attribute model
Voice recognition using a fuzzy multiple attribute model
2001,
In this work we use a multiple attribute fuzzy decision making method to recognize the...
Exact solution of multicommodity flow problems with branch-and-bound and column generation
Exact solution of multicommodity flow problems with branch-and-bound and column generation
2001,
We present a branch-and-price algorithm to solve the minimum cost multicommodity flow...
On the applicability of Karmarkar's algorithm
On the applicability of Karmarkar's algorithm
2000,
This paper presents an attempt undertaken in order to answer the question of the...
A fuzzy set-based decision making tool for the transportation network synchronous digital hierarchy planning
A fuzzy set-based decision making tool for the transportation network synchronous digital hierarchy planning
2000,
This work presents a mathematical formulation of the optimal p-hub allocation and...
The asymmetric travelling salesman problem: Lower bounds and a new separation algorithm
The asymmetric travelling salesman problem: Lower bounds and a new separation algorithm
2000,
Several integer programming formulations to the Asymmetric Travelling Salesman Problem...
Self concordance and damped Newton method
Self concordance and damped Newton method
2000,
In 1994 Nesterov and Nemirovskii introduced a unified theory of interior point methods...
Decaying inventory under price discount with exponential demand
Decaying inventory under price discount with exponential demand
2000,
In this paper, an attempt has been made to develop an inventory model by incorporating...
A software application for inventory management
A software application for inventory management
2000,
The article describes an application developed to support the inventory management of...
Stock decisions on slow moving spares
Stock decisions on slow moving spares
2000,
Holding engineering spare parts is often crucial for a sound maintenance policy. But...
Nonlinear least squares methods and convergence
Nonlinear least squares methods and convergence
2000,
The nonlinear least squares problem is of practical importance specially in curve...
Measuring the efficiency of English secondary schools: An efficiency position approach by means of DEA
Measuring the efficiency of English secondary schools: An efficiency position approach by means of DEA
2000,
This paper outlines a DEA based approach to decompose overall measures of efficiency...
Management of a logistic
Management of a logistic
2000,
On the sequence of Portuguese liquefied petroleum gases (LPG) market liberalisation,...
Fuzzy decision making for distribution systems operational planning
Fuzzy decision making for distribution systems operational planning
2000,
This paper presents results of research associated with the development of decision...
A new shortest paths ranking algorithm
A new shortest paths ranking algorithm
2000,
Ranking shortest paths is a classical network problem consisting of the determination...
The ranking of K shortest paths
The ranking of K shortest paths
2000,
The K Shortest Paths Problem can be considered as a generalization of the classical...
Efficient resolutions of the single-item uncapacitated lot problem
Efficient resolutions of the single-item uncapacitated lot problem
2000,
Several resolution methods for the ‘economic lot sizing’, as presented by...
Decision support in logistics systems strategic planning
Decision support in logistics systems strategic planning
1999,
Logistics systems strategic planning involves simultaneous decisions about the supply...
Solution concepts for multiple objective n-person games
Solution concepts for multiple objective n-person games
1999,
Multiple criteria decision problems with one decision-maker haven been recognised and...
Integer solutions of multicriteria network flow problems
Integer solutions of multicriteria network flow problems
1999,
This paper is concerned with the solution of integer multicriteria network flow...
The multiobjective optimal path problem
The multiobjective optimal path problem
1999,
The multiobjective optimal path problem is viewed as the optimization of a function...
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