Detalhes bibliográficos
Ano de defesa: |
2014 |
Autor(a) principal: |
Frascati, Giuliano |
Orientador(a): |
Tavares Neto, Roberto Fernandes
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Banca de defesa: |
Não Informado pela instituição |
Tipo de documento: |
Dissertação
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Tipo de acesso: |
Acesso aberto |
Idioma: |
por |
Instituição de defesa: |
Universidade Federal de São Carlos
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Programa de Pós-Graduação: |
Programa de Pós-Graduação em Engenharia de Produção - PPGEP
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Departamento: |
Não Informado pela instituição
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País: |
BR
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Palavras-chave em Português: |
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Palavras-chave em Inglês: |
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Área do conhecimento CNPq: |
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Link de acesso: |
https://repositorio.ufscar.br/handle/20.500.14289/3745
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Resumo: |
Many scheduling problems found in the literature are classified as NP-Hard, which means that the computational costs of the solutions within known exact mathematical methods can be very time consuming. In the case of partial outsourcing it is essential to consider the outsourcing decisions inside the scheduling problem to achieve optimal results from outsourcing. This project discusses the following issue: a single machine environment where the setup times are sequence-dependent and there is an outsourcing option. The goal is to determinate the set of jobs that will be outsourced and the production sequence of the jobs that will be performed inhouse, aiming to eliminate the total tardiness of all jobs, witch is a NP-Had problem. New approaches regarding meta-heuristics, like ACO (Ant Colony Optimization) show a new horizon for this kind of issues. The hybrid algorithm, including ACO and local search methods, reached the optimal values in 94,7% of the problems. |