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Abstract

The implementation of milk-run in Indonesia has been started since 2005. As a developing

country, there is a challenge to operate milk-run smoothly especially in urban area due to

severe traffic congestion and unfavourable road condition in some areas. This research aimed

to analyze the practice of milk-run operation in one of the biggest Japanese automotive

companies in Indonesia. Transportation Value Stream Mapping (TVSM) is applied in order

to perform just-in-time delivery in the supply chain before operating milk-run. It is discussed

that this company still need to continue in improving milk-run operation. The operation

system needs control and integration from manufacturer, supplier and logistics partner.

The advantage of milk-run operation is cost reduction and also support green logistics in

decreasing emission of carbondioxide (CO2) by reducing the number of trucks used.

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Authors and Affiliations

Humiras Hardi Purba
Adi Fitra
Aina Nindiani
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Abstract

The problem of sequencing jobs on a single machine to minimize total cost (earliness and

tardiness) is nowadays not just important due to traditional concerns but also due to its

importance in the context of Collaborative Networked Organizations and Virtual Enterprises,

where precision about promptly responses to customers’ requests, along with other

important requirements, assume a crucial role. In order to provide a contribution in this

direction, in this paper the authors contribute with an applied constructive heuristics that

tries to find appropriate solutions for single machine scheduling problems under different

processing times and due dates, and without preemption allowed. In this paper, two different

approaches for single-machine scheduling problems, based on external and internal

performance measures are applied to the problem and a comparative analysis is performed.

Computational results are presented for the problem under Just-in-Time and agile conditions

on which each job has a due date, and the objective is to minimize the sum of holding costs

for jobs completed before their due date and tardiness costs for jobs completed after their

due date. Additional computational tests were developed based on different customer and

enterprise oriented performance criteria, although preference is given to customer-oriented

measures, namely the total number of tardy jobs and the maximum tardiness.

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Authors and Affiliations

Maria L.R. Varela
Justyna Trojanowska
Ana M. Madureira
Joana D. Dantas
André S. Santos
Goran D. Putnik
José Machado

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