W. (Weina) Ma MSc

Weina Ma
Erasmus School of Economics (ESE)
Erasmus University Rotterdam
ERIM PhD Candidate
Field: Logistics & Information Systems
Affiliated since 2016

PhD Track Demand Ful llment in Make-to-Stock Systems with Contract and Spot Customers

Tactical level decisions for spare part management have been explored extensively. However,
due to the uncertainty of demand and supply, operational decisions such as expediting
and emergency lateral transshipment can still add value to companies. With the development
of control towers in large capital goods service companies, real time information can
be incorporated to enhance operational level decisions, but how to do it remains largely
By investigating the literature on operational aspects of spare part management and by
examining practice in companies, we identify the scope of operational decisions and figure
out future research directions. Specifically, we are interested in how to quote lead times
in a make-to-stock system with contract and noncontractual spot customers at operational
level. Furthermore, we, as well as the companies who want to utilize dynamic pricing and
advance demand information(ADI), are interested in what role dynamic pricing and ADI
would play in the demand fulfillment problem a make-to-stock system. We will use Markov
decision process models to solve the problems, and adjustments will be made for each specific
problem. We aim at finding optimal lead time quotations and the structure of optimal
solutions, which will provide managerial insights for companies, especially about new spare
parts with little historical information.

due date management; Markov decision process; dynamic pricing; advance demand information
Time frame
2016 -


  • Academic (2)
    • Ma, W., Hekimo─člu, M., & Dekker, R. (2023). Admission control for a capacitated supply system with real-time replenishment information. International Journal of Production Economics, 266, Article 109000. https://doi.org/10.1016/j.ijpe.2023.109000

    • Topan, E., Eruguz, S., Ma, W., van der Heijden, MC., & Dekker, R. (2020). A review of operational spare parts service logistics in service control towers. European Journal of Operational Research, 282, 401-414. https://doi.org/10.1016/j.ejor.2019.03.026


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