Programming of Economic Lot Sizes

Programming for Economic Lot-Sizes with Precedences Between Items

In the manufacture of certain products such as computers, turbines, and automobiles, various components and subassemblies must be combined in a specified assembly order over a period of time. Certain items must be on hand before others can be produced, and these requirements are determined by the product structure. Management's objective is to turn out timely products in the most economic ...

Economic lot-sizing games

In this paper we introduce a new class of OR games: economic lot-sizing (ELS) games. There are a number of retailers that have a known demand for a fixed number of periods. To satisfy demand the retailers order products at the same manufacturer. By placing joint orders instead of individual orders, costs can be reduced and a cooperative game arises. In this paper we show that ELS games are bala...

Hybrid heuristics for planning lot setups and sizes

The planning of a canning line at a drinks manufacturer is discussed and formulated as a mathematical programming model. Several alternative heuristic solution methods are developed, tested and compared on real data, illustrating the trade-offs between solution quality and computing time. The two most successful methods make hybrid use of local search and integer programming, but in rather diff...

Optimal Lot Sizes with Geometric Production Yield and Rigid Demand

Guides to Inventory Policy: Functions and Lot Sizes

But this is only one of the characteristic problems business managers face in dealing with production planning, scheduling, keeping inventories in hand, and expediting. Other questions just as perplexing and baffling when managers approach them on the basis of intuition and pencil work alone-are: How often should we reorder, or how should we adjust production, when sales are uncertain? What cap...