fuzzy water quality index (fwqi) was applied in order to assess the degree of drinking water resources in yazd province, iran. thisstudy has also offered the creation of a new fuzzy water quality index (fwqi) to evaluate this tool’s applicability. 12 chemicalparameters including toxic and non-toxic heavy metals measured in 71 groundwater samples collected from drinking water resourcesin rural a...

Motorola (1980) introduced the concept of six sigma as a quality philosophy and a management strategy, which when adopted in a system of organization will reduce wastages and increase the profit to the management results in enhancing the satisfaction of the customer. If this concept of Six Sigma is adopted in an organization it can results in 3.4 or lower number of defects per million opportuni...