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Coordinate rotation digital computer (CORDIC) algorithm can be used to implement a variety of transcendental functions. Using theory and techniques of uncertainty evaluation, we discuss the error sources and the total computational error of CORDIC algorithm in calculating arctangent, sine, and cosine functions. Besides, we reveal some conclusions for error propagation mechanism, which are not quite...
A unified reliability analysis method is presented to handle the problem of multi-source uncertainties with random, fuzzy and interval variables. In the proposed method, a unified reliability analysis model (URAM) is constructed by applying the conditional failure on the basis of the relationship of probability, possibility, and evidence theories. The URAM belongs to a three layers conditional reliability...
The evaluation of measurement uncertainty is an important part of the new generation geometric products specifications (GPS). At present, coordinate measurement only give examine result of plane to plane parallelism, and fail to give uncertainty problem of examine result. According to basic principle of two planes least-square verification and ISO/ TS 14253 - 2 to give transfer formula of uncertainty,...
The intelligent processing system of experiment data was developed based on Multimedia ToolBook. There were many techniques in the system, such as intelligent table looking up, linear interpolation, diagnosing automatically the number of data, fitting of a straight line and fitting of exponential curve based on method of minimum squares, and the statistical techniques of ??it added 1 when it was meeting...
Traditionally, visibility and control are recognized as key elements of resilient supply chains. In a business environment of increasing complexity, firms must look beyond visibility and control to complementary competencies that enable rapid, collaborative response to supply chain disruptions. In this paper, an attempt has been made to analyze sources of supply chain risk and their managerial counterparts...
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