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Flexibility analysis in lot sizing problems

Grant number: 19/17295-0
Support Opportunities:Scholarships in Brazil - Doctorate (Direct)
Effective date (Start): January 01, 2020
Effective date (End): April 30, 2023
Field of knowledge:Engineering - Production Engineering - Operational Research
Principal Investigator:Silvio Alexandre de Araujo
Grantee:Maurício Rocha Gonçalves
Host Institution: Instituto de Biociências, Letras e Ciências Exatas (IBILCE). Universidade Estadual Paulista (UNESP). Campus de São José do Rio Preto. São José do Rio Preto , SP, Brazil
Associated research grant:16/01860-1 - Cutting, packing, lot-sizing, scheduling, routing and location problems and their integration in industrial and logistics settings, AP.TEM


The lot sizing problem consists in determining the quantity of products to be produced in each period over a finite time horizon in order to meet a certain demand and optimize an objective function, such as minimizing costs. With the natural evolution of the industrial decisions process, several strategies have been used to improve the decisions made, making them more complex. Among these strategies, there are recent studies that consider that some data, although deterministic, have a certain flexibility, making the problem more similar to what it actually occurs in practice. This project aligns with this trend of evolution of the decision process. Few papers make a detailed study on the addition of flexibility in lot sizing problems. It is worth noticing that in the supply chain literature, for example, it has been shown that the addition of flexibility in the production process can provide good results. In this research project we intend to help to fill this gap in the lot sizing literature, with the study of flexibility coming from different sources. (AU)

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