Tomada de decisão em redes logísticas de reciclagem de materiais através da dinâmica de sistemas / Decision making in logistics networks recycling of materials through System Dynamics

AUTOR(ES)
FONTE

IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia

DATA DE PUBLICAÇÃO

27/02/2012

RESUMO

The principal aim of this work is to study a model of the closed-loop supply chain, which is based on systemic behavior, through the System Dynamics as a decision making tool. Firstly this model is adapted to the Brazilian issues and then it is applied in a recycling network, in this case it is the municipal solid waste of São Carlos city. The proposal involves the concepts application that leads to improve reverse processes, thereby performing the chain profitable and encouraging these activities implementation in \"forward logistics networks\". After an extensive investigation of reverse chains quantitative models, an organization description is performed. Thereafter strategic analysis definition, the next step was setting the model into Brazilian patterns based on the program design. Accomplished the stage of model validation and parameterization, to match it for its implementation in practice, scenarios were assigned to the network horizon planning of five years. The System Dynamics versatility to incorporate specific factors in such structure, in addition to its simplicity and flexibility to formulate a problem compared to other quantitative models covered, they are assumptions corroborated in the study. To the same effect, through model simulation based on 30 scenarios, it was found that 16 scenarios are feasible and without an investment to the increase of collected material, those scenarios are unfeasible and the system is not self-sufficient. Furthermore, between the four variables decided to analyze, the \"collection capacity\" has decisive factor to the system performance, besides the \"collection time\" and \"index per capita\" variables depend on the first one to the increase of collected materials. Finally, the cost transportation variable affects substantially the system performance.

ASSUNTO(S)

análise estratégica cenários decision making dinâmica de sistemas gestão de resíduos logística reversa modelos quantitativos municipal solid waste quantitative models recycling networks redes de reciclagem reverse logistics resíduos sólidos municipais scenarios strategic analysis system dynamics tomada de decisão waste management

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