The position of kneepoint of Phase-frequency characteristic mean value curve is invariant, but the kurtosis of the curve near the kneepoint decreases.
刚度与质量参数随机时相频特性均值曲线的拐点位置不变，只是拐点附近曲线陡峭度减小。
2
Comparing with the adaptive denoising algorithm based on compression ratio and SVD, it avoids calculating the function of image compression ratio and its kneepoint.
该算法的特点是将能量最小法则和奇异值分解结合起来，在代数空间中建立了一种自适应的图像降噪算法。
3
Remember teaching your child to ride a bike. Eventually you let go of the seat and your child went sailing down to sidewalk only to eventually fall and at some point scrape a knee or palm.