this article proposed a methodology for computer numerical control (CNC) machine scoring. The case study company is a manufacturer of hard disk drive parts in Thailand. In this company, sample of parts manufactured from CNC machine are usually taken randomly for quality inspection. These inspection data were used to make a decision to shut down the machine if it has tendency to produce parts th...

This paper aims to demonstrate how the adoption of a continuous improvement program, based on lean manufacturing tools, can benefit production automotive filters for heavy vehicles, considering improved productivity and reduced operational waste, with consequent increase in effectiveness cost reduction. In this study we used mainly kaizen value stream mapping. During its development, applicatio...

Recently, in Mathematical and Computational Applications Journal Chiu et al. [1] and Chen and Chiu [2] propose an inventory model based on EPQ with rework to determine the replenishment lot size and the number of shipments for a vendor-buyer integrated production-inventory system. They solve the inventory problem by considering both variables as continuous. However, the number of shipments must...

A central question in designing server farms today is how to efficiently provision the number of servers to extract the best performance under unpredictable demand patterns while not wasting energy. While one would like to turn servers off when they become idle to save energy, the large setup cost (both, in terms of setup time and energy penalty) needed to switch the server back on can adversel...

The cell formation (CF) is one of the most important steps in the design of a cellular manufacturing system (CMS), which it includes machines’ grouping in cells and part grouping as separate families, so that the costs are minimized. The various aspects of the problem should be considered in a CF. The machine reliability and the tool assigned to them are the most important problems which have t...

Few studies analyze the endogenous emergence of price competition in a new product market. This paper analyzes two differentiated products, an existing and newly introduced substitutable product, investigates conditions under which endogenously emerges market context choice between engaging holding leadership. We demonstrate that Bertrand when setup cost for is high enough. result implies gover...

Conventionally, the quality of a machined product has been measured based on the specifications, once the machining process is complete. However, this post-process inspection has several shortcomings: (1) it is difficult to isolate the causes of the defect; (2) the manufacturing cost has already been incurred when a non-conformance is detected; (3) rework of any scope increases the manufacturin...

This study is concerned with the optimal common cycle time for a multi-item production system with discontinuous delivery and failure in rework. In real life manufacturing environments, managements often plan to produce multiple products in turn on a single machine in order to maximize machine utilization. Also, dealing with random defective items during production seems to be an inevitable tas...

The demand for power keeps rising with rapid economic development and growth of industrialization. The frequent mismatch created between demand and supply can be mitigated by the use of energy buyback programs. This papermodels a buy-back programusing a periodic review joint pricing and inventory model, incorporating compensations and setup cost over finite planning horizons. It is shown that a...