linear independence
1.The white noise, Brown and other signals which present the linear characteristics in the power spectra-frequency space with bi-logarithm coordinates are of the fractal structure, self-similarity and scale independence.
2.The stress range and the mean stress produced by nonlinear wave bending moment acting on ship hull are obtained by means of rain-flow cycle counting. The independence test, significance test of the linear regression, the homogeneity test of variance (Bartlett), distribution fitting and its test are made.
