In the automotive business, financial services have gained in importance over the last few years. Apart from sales promotion, customer retention is a primary concern. As a consequence quality management which had so far been regarded as a discipline of the manufacturing sector, has been taking a central role in the service sector. Therefore the Six Sigma methodology attracts a lot of attention ...

Six-Sigma has some measures which measure performance characteristics related to a process. In most of the traditional methods, exact estimation is used to assess these measures and to utilize them in practice. In this paper, to estimate some of these measures, including Defects per Million Opportunities (DPMO), Defects per Opportunity (DPO), Defects per unit (DPU) and Yield, a new algorithm ba...

The superior oil absorption capacity of recycled polypropylene (PP) fiber and waste tire powder were used to recover spilled engine oil. We used ASTM F726-99 method to evaluate oil adsorbing capability of PP fiber and found it to have a large, rapid oil sorption capacity. However, its lack of elasticity dramatically limited that capacity after repeated use. Tire powder, which absorbs less oil m...

Today, the competitive environment of the knowledge age has been replaced with the competitive environment of the industrial age as the rules of the business world are changing completely. The focused issue is to reach to the knowledge as soon as possible, and to process and apply it rapidly. In this context, one of the important goals that the companies try to reach in order to achieve acceler...

Stockholders and customers both challenge executives to produce products and services at lower cost and higher quality. In response to this need executives have implemented quality improvement programmes. One widely applied programme is Six Sigma, which promises massive cost-reduction, and improved quality of products and services. Six Sigma methodology is a business strategy for operations imp...