In this paper we consider production economic and cost related yield rate in a JIT (Just in Time) system. Based on the traditional EPQ (Economic Production Quantity) model, we establish the relation between cost and yield rate. The geometric programming approach is applied in our model to solve this optimizing posynomials problem. A numerical example is carried out to verify the proposed model....

The control policy affects performance of a manufacturing line and can be classified as push, pull, or combination of pull and push. A pull or just-in-time (JIT) production system is a philosophy or an approach of the manufacturing system in which order release occurs due to physical removal of finished inventory in response to the customer demand. In this paper, we review the behavior of a man...

This paper implements the inventory model developed in the first part of this paper in a simplified problem to simultaneously reduce costs and risks in JIT systems. This model is developed to ascertain an optimal ordering strategy for procuring raw materials by using regular multi-external and local backup suppliers to reduce the total cost of the products, and at the same time to reduce the ri...

In today’s competitive global markets, Just-in-Time (JIT) is one of the main lean manufacturing approaches. It is used in organizations to improve performance and reduce costs and as a strategic core capability to ensure their market position. However, using JIT tightly couples various functions of the Supply Chain and increases the risk of propagating disruptions through the entire system. Thi...

Just-In-Time (JIT) is a lean manufacturing tool, which provides the benefits of efficiency, and of minimizing unnecessary costs for many organisations. However, the risks arising from these benefits have been disregarded. These risks impact on system processes disrupting the whole supply chain. This paper proposes an inventory model that can simultaneously reduce costs and risks in JIT systems....

A combined MRP(material requirement planning) and JIT(just in time) system can be more effective manufacturing system which utilizes the best attributes of each manufacturing system need to accommodate the best planning features of MRP and the best execution features of JIT to address the changing needs of industry. When MRP and JIT involve in any production system than its balance the all enti...

We show that the advent of improved logistics management, including the “just-intime” (JIT) production system, can plausibly explain much of the dramatic (i.e., roughly 95%) growth of intra-firm trade in intermediates from Canadian affiliates to their U.S. MNC parents in the 1984-1995 period. The decline in tariffs and physical transport costs over this period was far too small (about 2.5%) to ...