Establishing a suitable balance between grain processing efficiency, grain nutrient yield, adequate feed mixing and delivery and optimal pig performance and health is a complex process. In the absence of vertical integration in the production system, it is likely that implementation of optimal processes for each stage of feed production and use will not be complementary. This review has establi...

The purpose of this paper is to investigate and propose a fuzzy extended economic production quantity model based on an elaboratively modeled unit cost structure. This unit cost structure consists of the various lot-size correlative components such as on-line setups, off-line setups, initial production defectives, direct material, labor, and depreciation in addition to lot-size noncorrelative i...

This paper discusses a production-inventory system under random machine breakdown. Holding safety stock is the common way to mitigate effect of breakdown on shortages that may occur during repair time. Since holding can be costly, especially for expensive products, this investigates an alternative strategy in which it assumed production manager purchase same products from supplier order meet de...

In this paper, an inventory model for two-stage supply chain is investigated. A supply chain with single vendor and single buyer is considered. We assume that shortage as a backorder is allowed for the buyer and the vendor makes the production set up every time the buyer places an order and supplies on a lot for lot basis. With these assumptions, the joint economic lot size model is introduced ...

[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 capacitated lsp w...

When production yield is random and demand needs to be satisfied in full, several production runs may need to be attempted until the number of usable products is sufficient. The tradeoff is then between using small lots possibly incurring setup cost many times and large lots which may result in costly overproduction. We generalize this problem to include inspection costs and show how to compute...

Modern automated production lines usually use one or multiple computer-controlled robots or hoists for material handling between workstations. A typical application of such lines is an automated electroplating line for processing printed circuit boards PCBs . In these systems, cyclic production policy is widely used due to large lot size and simplicity of implementation. This paper addresses cy...