Country: Portugal

Found 202 papers in total
A genetic algorithm for the resource constrained project scheduling problem
A genetic algorithm for the resource constrained project scheduling problem
2003,
This paper presents a genetic algorithm for the Resource Constrained Project...
Step by step search for achievable intermediate targets in zero sum data envelopment analysis
Step by step search for achievable intermediate targets in zero sum data envelopment analysis
2003,
Classic DEA models do not assume any kind of production equilibrium for the whole set...
A genetic based approach to the vehicle routing problem
A genetic based approach to the vehicle routing problem
2003,
In its basic form the vehicle routing problem (VRP) consists of serving a set of...
Locomotives' operability simulation model
Locomotives' operability simulation model
2003,
Inventory management is an important area within the organizations since it determines...
A comparative analysis of the Markowitz and Konno portfolio selection models
A comparative analysis of the Markowitz and Konno portfolio selection models
2003,
In this paper Konno portfolio selection model is presented and compared with Markowitz...
A genetic based algorithm for the quadratic 0–1 problem
A genetic based algorithm for the quadratic 0–1 problem
2003,
In this work we present an algorithm to the unrestricted binary quadratic program....
An inventory model for deteriorating items with exponentially increasing demand and shortages under inflation and time discounting
An inventory model for deteriorating items with exponentially increasing demand and shortages under inflation and time discounting
2003,
A lot-size inventory model for deteriorating items is derived with exponentially...
The graph bisection minimization problem
The graph bisection minimization problem
2003,
A method of determining a lower bound for the graph bisection minimization problem is...
Optimal number of spare and optimal interval between overhauls for equipment group
Optimal number of spare and optimal interval between overhauls for equipment group
2003,
Any equipment during operation can fail or degrade with time. Therefore, it is...
An applied mathematical programming model to the Portuguese agricultural sector
An applied mathematical programming model to the Portuguese agricultural sector
2003,
This study evaluates the effects, in the Portuguese agricultural sector, of the Agenda...
Evaluation of a Brazilian university strategy aided by the joing utilization of Uta and MACBETH
Evaluation of a Brazilian university strategy aided by the joing utilization of Uta and MACBETH
2003,
Universidade Federal Fluminense (UFF) was created in the Municipality of Niteroi...
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...
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