2008
DOI: 10.1590/s0104-530x2008000100007
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Modelagem da gestão de estoques de peças de reposição através de cadeias de Markov

Abstract: Nessa pesquisa é apresentada uma abordagem para gestão de estoques de peças de reposição com base em cadeias de Markov. É feita uma comparação com a simulação convencional, a fim de validar esta abordagem, bem como é apresentada uma heurística para determinação dos parâmetros da política (S, s) de gestão de estoques, dado um conjunto de itens de custo (falta, excesso e ressuprimento) e de demanda com distribuição Poisson. A análise dos gráficos desses itens de custo em função dos parâmetros da política (S, s) … Show more

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Cited by 6 publications
(3 citation statements)
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References 11 publications
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“…The application of the model in a set of 2,704 industrial items indicates an inventory cost reduction of 15% over the actual inventory costs for the same service level. Gomes and Wanke (2008) formulated a heuristic to obtain the parameters in (s, S) model ("s" denotes the order point) using Markov chains and steady state probably distributions for inventory positions, assuming costs of holding, ordering and shortage, and also assuming Poisson demand. Using the heuristic to solve a set of instances, the costs achieved were, in average, only 2.65% above the optimum solution obtained through simulations.…”
Section: Classic Modelsmentioning
confidence: 99%
“…The application of the model in a set of 2,704 industrial items indicates an inventory cost reduction of 15% over the actual inventory costs for the same service level. Gomes and Wanke (2008) formulated a heuristic to obtain the parameters in (s, S) model ("s" denotes the order point) using Markov chains and steady state probably distributions for inventory positions, assuming costs of holding, ordering and shortage, and also assuming Poisson demand. Using the heuristic to solve a set of instances, the costs achieved were, in average, only 2.65% above the optimum solution obtained through simulations.…”
Section: Classic Modelsmentioning
confidence: 99%
“…As demandas são geralmente intermitentes, isto é, ocorrem infrequentemente e com muitos períodos sem nenhuma demanda -o comprimento médio de seu intervalo inter-demanda é grande (TURRINI; MEISSNER, 2017). Adicionalmente os tempos de resposta do ressuprimento são longos (GOMES;WANKE, 2008;TEODORO FILHO et al, 2017;COSTA, 2009). Nota-se, então, que existe uma dicotomia motivada por interesses divergentes e internos das organizações, em que, os setores de Contabilidade e Finanças olham os volumes de capital imobilizados em prateleiras de estoque e pressionam para reduzi-los.…”
Section: Introductionunclassified
“…Performance models are those models which are reactive systems from which their behavior can be determined. Such models can be applied for capacity planning, manufacturing systems performance analysis, alternative systems, capacity expansion, spare parts inventory management (GOMES; WANKE, 2008) and maintenance systems (DE MARCHI;MORAIS, 2001). These application areas play a key role in production management since they enable engineers to conduct studies on different options by changing the performance models.…”
Section: Introductionmentioning
confidence: 99%