Browsing by Keywords "Lot-sizing"
Now showing items 1-6 of 6
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An application of capacitated lot-sizing model in petroleum sector
(Bilkent University, 2006)In this thesis, we study capacitated lot-sizing problem with special feature, applicable to the petroleum refinery sector. In our model, the end-products should be stored in item-specific and capacitated storage tanks ... -
A branch and cut algorithm for the inventory routing problem
(Bilkent University, 2019-07)The inventory routing problem arises in vendor managed systems where products are distributed from a supplier to a set of retailers by a homogeneous eet of capacitated vehicles. The routes of the vehicles and the ... -
Dynamic lot sizing and scheduling in cellular manufacturing systems using hybrid simulation analytic model
(International Journal of Industrial Engineering, 1995)In most of the production systems, lot-sizing and scheduling decisions are made at different levels of hierarchy; although there is a strong interaction between these decisions. Furthermore, most of the existing models do ... -
The effect of economies-of-scale on the performance of lot-sizing heuristics in rolling horizon basis
(Taylor & Francis, 2020-02-26)In this article, we consider the production planning problem in the presence of (dis)economies-of-scale in production costs on a rolling horizon basis with a fixed forecast horizon. We propose variants of three well-known ... -
Polyhedral analysis for the two-item uncapacitated lot-sizing problem with one-way substitution
(Elsevier, 2009-07-28)We consider a production planning problem for two items where the high quality item can substitute the demand for the low quality item. Given the number of periods, the demands, the production, inventory holding, setup and ... -
Relaxations for two-level multi-item lot-sizing problems
(Springer, 2014-08)We consider several variants of the two-level lot-sizing problem with one item at the upper level facing dependent demand, and multiple items or clients at the lower level, facing independent demands. We first show that ...
