This paper focuses on analysis of the causation,the mechanism and the hazard of a frequency shift. Either the nonlinear satellite structure or the dilation of scathe is the main causation of the recoverable frequency shift. The result of the nonlinear dynamic parameter test with the honeycomb sandwich plane corroborates the analysis.
On the basis of the cold state Model Test of a tower type fly ash concentrator and an exploratory analysis of the resistance variation relationship under various operating regimes and geometric parameter test conditions as well as a multidimensional linear regression analytical calculation of a vast amount of test data, given in this paper is a multidimensional regression formula for calculating the resistance of the tower type fly ash concentrator, therepy providing a technical basis for its design, evaluation and application in engineering practice.
The author discussed the vice of pseudo random number generators just mentioned above and reviewed the tests of random numbers, such as parameter test, uniform test, independent test, etc. The article also introduced the industrial test programs: Diehard, Crypt-X, ENT, NIST FIPS 140-1 and SASD.
本研究讨论了算法随机数生成器的缺陷，回顾了目前随机数的检验方法，如参数检验、均匀性检验、独立性检验和组合规律检验等，简要介绍了常用的工业检验方法—Diehard、Crypt-X、ENT、NIST FIPS 140-1和SASD。