Busca avançada
Ano de início
Entree
(Referência obtida automaticamente do Web of Science, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

Three time-based scale formulations for the two-stage lot sizing and scheduling in process industries

Texto completo
Autor(es):
Camargo, V. C. B. [1, 2] ; Toledo, F. M. B. [1] ; Almada-Lobo, B. [2]
Número total de Autores: 3
Afiliação do(s) autor(es):
[1] Univ Sao Paulo, Inst Ciencias Matemat & Comp, BR-13560970 Sao Carlos, SP - Brazil
[2] Univ Porto, P-4100 Oporto - Portugal
Número total de Afiliações: 2
Tipo de documento: Artigo Científico
Fonte: Journal of the Operational Research Society; v. 63, n. 11, p. 1613-1630, NOV 2012.
Citações Web of Science: 14
Resumo

In this paper, we propose three novel mathematical models for the two-stage lot-sizing and scheduling problems present in many process industries. The problem shares a continuous or quasi-continuous production feature upstream and a discrete manufacturing feature downstream, which must be synchronized. Different time-based scale representations are discussed. The first formulation encompasses a discrete-time representation. The second one is a hybrid continuous-discrete model. The last formulation is based on a continuous-time model representation. Computational tests with state-of-the-art MIP solver show that the discrete-time representation provides better feasible solutions in short running time. On the other hand, the hybrid model achieves better solutions for longer computational times and was able to prove optimality more often. The continuous-type model is the most flexible of the three for incorporating additional operational requirements, at a cost of having the worst computational performance. Journal of the Operational Research Society (2012) 63, 1613-1630. doi:10.1057/jors.2011.159 published online 7 March 2012 (AU)

Processo FAPESP: 08/09953-2 - Otimização de processos na indústria têxtil: modelos e métodos de solução
Beneficiário:Victor Claudio Bento de Camargo
Linha de fomento: Bolsas no Brasil - Doutorado