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Unformatted text preview: ng, 1 6 9 – 178. © 2007 Springer. 170 P. Chiabert and M. De Maddis and calibration requirements including the uncertainty of dimensional and geometrical measurements. Such an ambitious goal required solid foundations able to support a new complete and coherent building for geometrical specifications in the age of Computer Aided Design. The foundations of GPS Project consist of several concepts which are resumed in the following: − the GPS matrix assures the completeness in the standardization of geometrical controls. The General GPS matrix consists of individual chains of standards related to specific controls along the design and verification phases in the product development process; − the mathematical approach avoids ambiguity of standards as well as successful implementation in computer based technology, thus reducing the discretionality of human interaction; − the uncertainty is a concept largely accepted in the verification phase [ISO/GUM, 1993] and it is now extended to the specification phase. The uncertainty management is a tool to explain the discrepancies betwee...
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- Spring '10
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