Country: Portugal

Found 202 papers in total
A neural heuristic for school timetabling
A neural heuristic for school timetabling
1998,
The paper analyses the problem of timetabling in high schools. This slow and laborious...
Strategic approaches to climate change at country level – focusing on greenhouse gas abatement
Strategic approaches to climate change at country level – focusing on greenhouse gas abatement
1998,
National climate change costing studies would generally benefit from the strengthening...
Estimation of the optimal lambda of the RiskMetrics™ methodology
Estimation of the optimal lambda of the RiskMetrics™ methodology
1998,
The goal of this work is to investigate the returns of the TELEBRÁS PN asset,...
A causal forecasting model for the sales of a consumer product
A causal forecasting model for the sales of a consumer product
1998,
This paper presents a forecasting model for bimester trade sales of Johnson &...
The Management Information System at INEGI
The Management Information System at INEGI
1998,
This paper presents SIGEI, the Management Information System of INEGI. SIGEI supports...
Modelling a wholesale system for pharmaceutical products in the area of Castelo Branco, Portugal
Modelling a wholesale system for pharmaceutical products in the area of Castelo Branco, Portugal
1998,
In this paper we present a modelling methodology, applied to a pharmaceutical products...
Stochastic processes to support predictive maintenance for industrial environments
Stochastic processes to support predictive maintenance for industrial environments
1998,
This paper presents and discusses the usage of stochastic processes to support...
A new branching scheme for job shop scheduling
A new branching scheme for job shop scheduling
1998,
The job-shop scheduling problem consists in scheduling a set of jobs on a set of...
Solution of some linear complementarity problems arising in variational models of mechanics
Solution of some linear complementarity problems arising in variational models of mechanics
1998,
In this paper we investigate the use of a block principal pivoting and an...
Optimality and algorithm for generalized invex Chebyshev problem
Optimality and algorithm for generalized invex Chebyshev problem
1997,
In this paper Clarke's generalized directional derivative is used to establish...
Description of a new algorithm for the vehicle routing and scheduling problem and comparative analysis of its performance
Description of a new algorithm for the vehicle routing and scheduling problem and comparative analysis of its performance
1997,
This article describes a novel algorithm for the vehicle routing and scheduling...
Optimization of quantitative relationship in animal science
Optimization of quantitative relationship in animal science
1997,
A mathematical approach for optimization of a given factors-production empirical...
Calendar effects in the sales of gasoline
Calendar effects in the sales of gasoline
1997,
The general behaviour of the gasoline sales contains calendar effects due to changing...
Design of multipurpose batch plants with operational pre-conditions
Design of multipurpose batch plants with operational pre-conditions
1997,
A formulation is presented for the optimal selection of both the equipment units and...
A multicriteria approach for the construction of a ‘costs matrix’ of an assignment model for stand aircraft management
A multicriteria approach for the construction of a ‘costs matrix’ of an assignment model for stand aircraft management
1997,
One of the daily operational tasks, in any airport, is the assignment of a stand to...
A standard genetic algorithm for clustering with precedence constraints
A standard genetic algorithm for clustering with precedence constraints
1997,
Our paper reports on the clustering of N items into a maximum of M non-overlapping...
A multiplier vector substitution technique based on pseudo-derivatives
A multiplier vector substitution technique based on pseudo-derivatives
1997,
An exact penalty technique based on an augmented Lagrangian function is used for...
Are ISO 9000 Quality Systems compatible with TQM?
Are ISO 9000 Quality Systems compatible with TQM?
1997,
The implementation of the ISO 9000 standards is increasing significantly all over the...
Development of gravitational models for gasoline sales
Development of gravitational models for gasoline sales
1997,
This paper describes the development of models for the sales of liquid fuels in...
A bond portfolio optimization model
A bond portfolio optimization model
1997,
The Portuguese financial market has been putting tremendous effort into creating a...
Probabilistic analysis of seismic hazard in Portugal
Probabilistic analysis of seismic hazard in Portugal
1997,
In this paper probabilistic models to be applied to seismic hazard analysis in...
Assessing the influence of initial conditions in a simulation model of the seismic process of occurrences in the Iberian Peninsula
Assessing the influence of initial conditions in a simulation model of the seismic process of occurrences in the Iberian Peninsula
1997,
In this paper we present an analysis of the initial conditions of a seismic simulation...
A comparison between line searches and trust regions for nonliner optimization
A comparison between line searches and trust regions for nonliner optimization
1996,
Line searches and trust regions are two techniques to globalize nonlinear optimization...
A comparative analysis of models for the Traveling Salesman Problem
A comparative analysis of models for the Traveling Salesman Problem
1996,
Several formulations for the Traveling Salesman Problem are compared with respect to...
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