Country: Portugal

Found 202 papers in total
A crew rostering support system
A crew rostering support system
1995,
This work describes a decision support system for crew rostering for urban transport...
Principal pivoting algorithms for a concave generalized linear complementarity problem
Principal pivoting algorithms for a concave generalized linear complementarity problem
1994,
The authors discuss a single and a block principal pivoting algorithms for the...
A study of Newton’s method for unconstrained optimization
A study of Newton’s method for unconstrained optimization
1994,
This paper discusses the use of the Newton’s method in unconstrained...
A Decision Support System for production planning
A Decision Support System for production planning
1994,
The paper presents a Decision Support System (DSS) for production planning of...
Introduction to DEA-Data Envelopment Analysis
Introduction to DEA-Data Envelopment Analysis
1994,
The objective of this tutorial on Data Envelopment Analysis is to introduce this...
A tabu search heuristic for a vehicle routing problem
A tabu search heuristic for a vehicle routing problem
1994,
The purpose of this paper is to describe a new tabu search heuristic for the vehicle...
Genetic algorithms in optimal electric and gas distribution network planning
Genetic algorithms in optimal electric and gas distribution network planning
1994,
This paper presents a new comprehensive methodology based on genetic algorithms for...
Conception of a ‘good’ alternative for the railway link to the port of Lisbon: An application of the multicriteria decision aid methodology
Conception of a ‘good’ alternative for the railway link to the port of Lisbon: An application of the multicriteria decision aid methodology
1994,
The construction of a new railway link to the port of Lisbon has been postponed many...
Heuristics for scheduling tasks in a job-shop
Heuristics for scheduling tasks in a job-shop
1994,
The scheduling of operations in industrial environment is often modelled as a job-shop...
Mathematical programming for the optimization of pre-stressed concrete
Mathematical programming for the optimization of pre-stressed concrete
1994,
A mathematical model for the optimum design of the tendon configurations in...
The role of Operational Research OR models in traffic management
The role of Operational Research OR models in traffic management
1994,
Modern Traffic Management Systems are envisaged as Decision Support Systems assisting...
Finding an initial feasible solution in linear programming
Finding an initial feasible solution in linear programming
1994,
In most approaches, the resolution of a linear programming problem needs a starting...
Risk analysis using time Petri nets
Risk analysis using time Petri nets
1994,
This paper discusses some possible uses of Petri nets in risk analysis. After...
The Weiszfeld method in single facility location
The Weiszfeld method in single facility location
1994,
In this paper two algorithms based on the Weiszfeld method are proposed to solve the...
A decision support system for single machine scheduling problems
A decision support system for single machine scheduling problems
1992,
Production planning often implies scheduling a set of tasks, involving very complex...
Sucessive Amplification Methods
Sucessive Amplification Methods
1992,
When dealing with multiple criteria decision problems, the Decision Maker may be...
A state space relaxation approach
A state space relaxation approach
1992,
This paper reports on a lower bound technique based on state space relaxation for a...
Linear and Lagrangean penalties for variable bounding in ILP: An application to a covering problem
Linear and Lagrangean penalties for variable bounding in ILP: An application to a covering problem
1992,
Lagrangean and linear penalties can be used for variable bounding in ILP. Such...
Location of extensive facilities: Potential applications
Location of extensive facilities: Potential applications
1992,
While problems involving location of facilities, which can be represented as points,...
Location of semiobnoxious facilities. Different approaches
Location of semiobnoxious facilities. Different approaches
1992,
The paper presents some approaches for locating semiobnoxious facilities in a given...
Study of vehicle replacement scenarios in the Portuguese market
Study of vehicle replacement scenarios in the Portuguese market
1992,
This particle presents a vehicle replacement study based upon operating and...
The role of information technologies in value added chains. A revisited approach
The role of information technologies in value added chains. A revisited approach
1991,
Geographic Information Systems (GIS) Technology has been applied to solve transport...
Transport policies in the information age-Moving cities on Wheels and Wires
Transport policies in the information age-Moving cities on Wheels and Wires
1991,
Today, many people think we are on the threshold of another ‘transport...
Information for transport planning, and Geographic Information Systems
Information for transport planning, and Geographic Information Systems
1991,
Geographic Information Systems (GIS) Technology has been applied to solve transport...
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