Essay --

1) What is half-dozen Sigma (6S) ?1.1 The concept The sigmas concept comes from the Greek letter which the statisticians use to appoint the the standard deviation of a population. So, Sigma represents the variability within a population. A high quality level of Sigma demonstrates the possibility of defective products. The high the Sigmas level, the lower the rate of the defective. Hence, the use of Six Sigma helps to reduce the variation, achieving weeny standard deviations and improving the products quality.(Pande et al 2002, Breyfogle 1999, Breyfogle et al 2001, Oakland 1999)1.2 The undercoat Six Sigma was developed by Motorola in the late 1980s with a view to improving the quality (Bhote 2002). In 1990s, General Electric and allied Signal implied Six Sigma successfully. After that, more and more ecesiss firstly in United States and after worldwide developed 6S and it won the attention of the backing world. The strategy of Six Sigma includes the use of statistical tools w ithin a organise methodology for obtaining of knowledge needed to achieve faster, better and cheaper products and services from the competitors.The condition and the repeated implementation of the main strategy are the key of the 6S. (Breyfogle 1999, Urdhwareshe 2000)1.3 translation of Six Sigma Six sigma has many definitions depending on the authors, it can be define as a strategy, an operational initiative, a statistic method, a tool for measurement, a target, a comparative performances measure, a vision, a philosophical system and other. Breyfogle (1999) supports that Six Sigma is considered an operational strategy that uses a well-structured continuous improvement methodology. The identify is to reduce the variability of servicees and the c... ...Six Sigma is not a technique or a method, according to the definition of Mario Perez-Wilson (1999), the 6S targets an optimized performance level with almost zero defects in a process that produces products, services or transa ctions. It indicates an achievement and maintenance of a world-class performance. Six Sigma is the result, not the journey. Accordingly, Perez-Wilson does not consider the Six Sigma as a methodology, but as a target. Consequently, according Knowles (2011), as siding of the different views, Six Sigma has three aspects and it is1) A measure How far is the organisation from the target and the perfect quality ? 2) A target 3.4 defects per one one thousand million opportunities.3) A philosophy It focuses on sustainability and on a long call strategy which targets on the reduction of expenses, decreasing the variability in the process and the products.