The information risk in supply chain, the bull whip effect, was described, that was inverse selection in the supply chain and moral degeneration.
笔者首先论述了供应链的信息风险，即牛鞭效应，供应链中的逆向选择、败德行为；
2
The method USES the DC component and the first harmonic of a curve's chain code expressed by Fourier series to fit the curve, avoiding the inverse calculation of an array used in general methods.