The discussion about "the six checks" works of Yinnan power grid;

Based on the repurchasing rate of government bonds in the Shanghai stock market,the nonparametric term structure model of interest rates has been estimated by using four different kernel functions: the Gauss kernel function,the Epanechnikov kernel function,a quartic kernel function and a six-power kernel function.

on Zhuzhou-Liupanshui double track lines.