The property of the near field subwavelength imaging in a metal thin-film structure is investigated using finite difference time domain method based on Drude model.
It is shown that the frequency domain Gramians of stable systems are equal to the time domain ones, and that unstable systems possess only frequency domain Gramians.
3
运用平行图、主成分分析和非参数散点图矩阵等方法,研究多变量工业流程在时域内的变化规律。
Using a Parallel plot, PCA and Nonparametric Scatterplot Matrix to Study the Evolution in Time of a Multivariate Industrial Process.