In utilising the techniques of rearranged functions, we proved that for a martingale f we have ‖M αf‖ Φ≤C pΦ ‖f # α‖ Φ and the same result for (Mf,S (p) (f)+D ∞), (Mf∧Sf,Mf∧Sf+D ∞).
本文利用重排函数不等式 ,证明了几个鞅不等式 ,这些不等式包含R 。
Based on the theory of nonlinear state observer,by selecting suitable nonlinear gain function in observer,which makes the closed-loop error system globally exponentially stable or app.
针对两种不同类型的时滞混沌系统中的未知参数的辨识问题,将系统的未知参数看作系统的未知状态,利用非线性状态观测器理论进行参数估计,通过选取观测器中非线性增益函数,使得闭环误差系统指数或渐进稳定,从而给出参数估计器存在的充分条件。
Then, incomplete beta function is applied to enhance the image\'s global contrast in the low frequency subband, and nonlinear gain function is used to process the coefficients at each scale in the directional bandpass subbands respectively, which suppresses small coefficients and enhances big coefficients by threshold denoising method.
引入非完全贝塔函数对低频子带系数进行处理,提升图像整体对比度;采用非线性增益函数对各带通方向子带系数进行处理,通过估计噪声水平设定阈值,抑制绝对值小于阈值的系数,增强大于阈值的系数。