It is also found that Shanghai copper futures exist one aperiodic length of circulation, and the length is 510 days. This further proves that the volatility of futures prices is non-randomness.
同时发现,沪铜期货存在着一个大约510天的非周期循环长度,进一步证明期货市场价格波动的非随机性。
2
The dynamic measurement is a non stationary random process varying with the measuring time. The dynamic measuring data have the characteristics of time variation, randomness, correlation and dynamic.