By using the block of a original message as the chaotic map's initial value, the output of a chaotic system is obtained through its iteration to form original's message digest.
通过将原始明文信息块作为混沌映射的初始值，经过混沌系统的迭代得到系统的输出来构建原始明文的信息摘要。
This paper gives a method to calculate the arithmetic square root by iteration with given accuracy, analyses the iteration error and provides a selected range of initial value with the given accuracy.
本文给出了在预定精确度下用迭代法计算算术平方根的方法，并分析了迭代的误差，给出了预定精确度下初始值的一个选取范围。
A new selecting weight iteration method is presented. It USES LTS robust estimate to ascertain the initial residuals value.
提出先用LTS稳健估计来确定残差的初值，然后再进行选权迭代方法。
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