The main works and some innovative achievements mainly reflect in the following aspects:First, due to good uncertainty, discrete pseudo-randomness and initial value sensitivity of chaos transform, we apply chaos transform into the process of database zero-watermarking construction and detection, use chaos sequence to select data items that to be constructed to zero-watermarking.
所做的主要工作及取得的创新成果主要体现在以下几个方面:首先,基于混沌变换的确定性、离散的伪随机性、初值的敏感等特性,将混沌变换应用到数据库零水印构造及检测过程中,借助混沌序列筛选待构造水印的数据项。
The author, in the paper,by means of the analysis of stress circle, discusses the characteristics of the secondary stress field which controls the distribution of the splay structures formed by the structural forces of various properties with different directions.
探讨不同性质,不同方向的构造形成的局部应力场的特点及分支构造的分布规律。