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Multiple Machine Continuous Setup Lotsizing with Sequence-dependent Setups

We address the short-term production planning and scheduling problem coming from the glass container industry. A furnace melts the glass that is distributed to a set of parallel molding machines. Both furnace and machine idleness are not allowed. The resulting multi-machine multi-item continuous setup lotsizing problem with a common resource has sequence-dependent setup times and costs. Production losses are pe...

Single machine multi-product capacitated lot sizing with sequence-dependent setups

In production planning in the glass container industry, machine-dependent setup times and costs are incurred for switch overs from one product to another. The resulting multi-item capacitated lot-sizing problem has sequence-dependent setup times and costs. We present two novel linear mixed-integer programming formulations for this problem, incorporating all the necessary features of setup carryovers. The compac...

Solving combinatorial problems: an XML-based software development infrastructure

The resolution of combinatorial problems typically requires the articulation of tools that range from modeling languages to dedicated solvers, including processing input data sets and visualizing results. This work concerns the improvement of the software development environment for a research project using a custom-designed XML dialect. NestingXML has been designed to capture one kind of combinatorial problems...

Teoria da decisão : transparências de apoio à leccionação de aulas teóricas

Provas de avaliação de Investigação Operacional : enunciados e resoluções: 1998...

História e metodologia da Investigação Operacional : transparências de apoio à ...

Sequenciamento e controlo das actividades productivas : transparências de apoio...

Optimização Combinatória : modelos e algoritmos : transparências de apoio à lec...

How the FEUP removal to the new premises was facilitated by the internal inform...

Since 1996 that FEUP possesses an information system (SiFEUP) that was developed mainly to record the information on the school?s activity concerning teaching and learning, research and development as well as for school management. The system has been built in-house and has nowadays more than 30 integrated modules that are enabling the modernization of many processes and services providing simultaneously decis...

Exercícios de Investigação Operacional