انتخاب تامین کننده و ارزیابی عملکرد در محیط های تولید به هنگام

The purpose of this paper is to aid just-in-time (JIT) manufacturers in selecting the most appropriate suppliers and in evaluating supplier performance. Many manufacturers employ the JIT philosophy in order to be more competitive in today’s global market. The success of JIT on the production floor has led many firms to expand the JIT philosophy to the entire supply chain. The procurement of parts and materials is a very important issue in the successful and effective implementation of JIT; thus, supplier selection and performance evaluation in long-term relationships have became more critical in JIT production environments. The proposed systems can assist manufacturers in handling these issues. In this research, neural network based supplier selection and supplier performance evaluation systems are presented. The proposed approach is not limited to JIT supply. It can assist manufacturers in selecting the most appropriate suppliers and in evaluating supplier performance. The proposed neural network based systems are tested with data taken from an automotive factory, and the results show that the proposed systems can be used effectively.

Today’s companies are faced with fierce competition, which is forcing them to increasingly consider new applications to improve quality and to reduce cost and lead time. For this reason, manufacturers must keep pace with the dynamic requirements of the market and be receptive to change. The aim of many new manufacturing systems, like the just-in-time (JIT) philosophy, is to eliminate waste in the production environment and to continue this process as a continuous cycle, always striving for the best (Lubben, 1988). The JIT philosophy is an important action in the supply chain management (SCM) system. The JIT purchasing system requires smaller order quantities and tighter delivery times. Hence, manufacturers dealing with the JIT philosophy must collaborate with their suppliers. In order to achieve a successful JIT system, a relationship between the supplier and buyer must be established for close business collaboration as strategic partners. Matson and Matson (2007) suggested that, for global competitiveness, further support is required for efficient JIT supply chains and that it is critical that JIT suppliers identify and address performance issues as effectively as possible.

systems aim at minimizing all inventory levels and delivering goods and services to customers on time. Just-in-time manufacturing involves producing the necessary items in the necessary quantities at the necessary time. It is a philosophy of continuous improvement in which non-value-adding activities (or wastes) are identified and removed. Many companies are now applying JIT production system in order to provide their customers with goods and services on time and to minimize all kinds of inventories in order to minimize inventory-related costs. If a company wants to establish a JIT production system, its supplier must be able to provide raw materials on time because in a JIT setting, there is no allowance for delays resulting from a lack of raw materials. If any delays occur, the company will not be able to offer the product to their customers on time. In other words, the lead time will be longer. Furthermore, waste will increase due to a shutdown of the production line. Therefore, successful JIT production depends largely on working with cooperative and reliable suppliers