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This article presents a FFT method in statistic quality control. Most previous statistic quality control tools can not analysis the quality data in both time and frequency. In this paper, the FFT method is used to transforming our view of the quality signal from time-based to frequency-based, to provide a basis for current decision during production as to when to hunt for cause of variation and take...
In order to develop a new quality cost control model, the paper first sets the third level subject of quality cost base on the PAF model, which is that quality cost is composed of prevention cost, appraisal cost, failure cost and does Pareto analysis according to the history data, finding the main influential subjects, second, it uses correlation analysis and partial correlation analysis to find the...
The information-intensive and interdisciplinary iterative nature of construction design projects makes it hard to plan and schedule using traditional tools. This results in inevitable rework and time waste in design process. The DSM method can handle sequential, parallel, in addition to coupled activities, and thus to optimize information flow in construction design project. In this article, a quantitative...
At present, quality contract research is one of the most important fields in the supply quality management. On the basis of the previous research, the paper does much innovation. It does research in the quality contract of multi-echelon supply chain under asymmetric information. First, the paper analyses the game structure of tri-echelon supply chain and draws the quality revenue function of supply...
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