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Transportes
Article . 2012 . Peer-reviewed
Data sources: Crossref
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Transportes
Article
License: CC BY
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Transportes
Article . 2012
Data sources: DOAJ
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Modelo integrado de seleção de cargas e reposicionamento de contêineres vazios no transporte marítimo

Authors: Rafael Buback Teixeira; Claudio Barbieri da Cunha;

Modelo integrado de seleção de cargas e reposicionamento de contêineres vazios no transporte marítimo

Abstract

Este artigo trata do problema integrado de escolha de cargas e reposicionamento de contêineres vazios no transporte marítimo, visando maximizar a receita total. O problema é modelado como de fluxo em rede multiproduto, possibilitando considerar restrições encontradas na prática, tais como horizonte de planejamento de longo prazo; diferentes tipos de contêineres; múltiplos navios e rotas e suas respectivas programações; capacidades dos navios em termos de número máximo de contêineres cheios e vazios por tipo, e peso máximo total, para cada rota e trecho entre dois portos, etc. O modelo proposto foi implementado em C++ e resolvido através do software de otimização GUROBI e utiliza planilha para entrada de dados. O mesmo foi aplicado a instâncias de testes compreendendo diferentes números de cargas. Os resultados evidenciam que o modelo permite resolver o problema de forma eficiente em tempos de processamento reduzidos.Abstract: This paper deals with the integrated problem of selecting shipments and repositioning empty containers in the maritime transportation, aiming to minimize the total revenue. The problem is modeled as a multi-commodity network flow that allows us to consider constraints found in practice including long planning horizon; different container types; several ships, routes and their respective schedules; routes that allow one port to be visited more than once; ship capacities in terms of maximum number of loaded and empty containers by type and total maximum weight, for each ship and route stretch between two ports, etc. The proposed model was implemented in C++ and solved by GUROBI optimization software, as well as a spreadsheet to store input data. It was applied to instances, comprising different number of shipments. The results show that our model can effectively solve the problem to optimality in very short CPU times.

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Keywords

Transportation engineering, TA1001-1280

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
4
Average
Average
Average
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