Production lot sizing with work-in-process considerations in response demand

Article Abstract:

Two models are used for simultaneously determining product manufacturing batch size and order quantities of production process input items. The models take into account the effects of work-in-process inventories resulting from a finite production rate. One model assumes that all items are acquired lot-for-lot, while the second allows multiple procurement lots for any input during a production cycle. An optimization process is used to solve the former, while an iterative, heuristic solution algorithm is used for the latter.

Economic lot size

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Production lot sizing with variable production rate and explicit idle capacity cost

Article Abstract:

A study was conducted to analyze a framework for simultaneously obtaining the optimal run length and the production rate for a single item. In line with this, the item's output rate was characterized as a decision variable. It was then assumed that the production cost per unit was a quadratic function of the production rate. In addition, a numerical example and sensitivity analysis were carried out to characterize an iterative solution process.

Production Management, Management, Planning, Production planning

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Heuristic production triggering mechanisms under discrete unequal inventory withdrawals

Article Abstract:

Analysis of inventory investment behavior by including the time-element involved in decision-making results in the observation that production is triggered more efficiently by fixed interval policies than those involving continuous review. Furthermore, the fixed setup interval system is both easier to run and evaluate than the alternative system. This is the case in a situation where stochastic discrete demand patterns exist.

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