Multi-source capacitated lot-sizing for economically viable and clean biofuel production
نویسندگان
چکیده
منابع مشابه
Progressive Interval Heuristics for Multi-Item Capacitated Lot-Sizing Problems
We consider a family of N items that are produced in, or obtained from, the same production facility. Demands are deterministic for each item and each period within a given horizon of T periods. If in a given period an order is placed, setup costs are incurred. The aggregate order size is constrained by a capacity limit. The objective is to find a lot-sizing strategy that satisfies the demands ...
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Multi-item capacitated lot-sizing problems are reformulated using a class of valid inequalities, which are facets for the single-item uncapacitated problem. Computational results using this reformulation are reported, and problems vnth up to 20 items and 13 periods have been solved to optimality using a commercial mixed integer code. We also show how the valid inequalities can easily be generat...
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[1] Corresponding author e-mail: [email protected] [1] Corresponding author e-mail: [email protected] Lot-sizing problems (LSPs) belong to the class of production planning problems in which the availability quantities of the production plan are always considered as a decision variable. This paper aims at developing a new mathematical model for the multi-level ca...
متن کاملCapacitated Lot-sizing with Linked Production Quantities of Adjacent Periods
One of the most important tasks operations manager are confronted with is to determine production quantities over a medium-size planning horizon such that demand is met, scarce production facilities are not overloaded and that the sum of holding and setup costs is minimized. For the single machine case the well-known Capacitated Lot-Sizing Problem (CLSP) has been proposed to determine minimum c...
متن کاملDynamic knapsack sets and capacitated lot-sizing
A dynamic knapsack set is a natural generalization of the 0-1 knapsack set with a continuous variable studied recently. For dynamic knapsack sets a large family of facet-defining inequalities, called dynamic knapsack inequalities, are derived by fixing variables to one and then lifting. Surprisingly such inequalities have the simultaneous lifting property, and for small instances provide a sign...
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ژورنال
عنوان ژورنال: Journal of Cleaner Production
سال: 2015
ISSN: 0959-6526
DOI: 10.1016/j.jclepro.2015.02.001