Based on the study of their generating mechanism, a novel scheme of multi-level digital chaos shift keying (MDCSK) via multi-scroll chaotic systems is presented.

在研究其产生机理的基础上，进一步提出了用多涡卷混沌系统实现多进制数字混沌键控(MDCSK)的一种方案。

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In order to improve the correct rate of eye locating, an algorithm for the refinement of face boundaries and a multi-level eye detection scheme are included in this method.

为了提高眼睛检测和定位的成功率，该方法包含了一个人脸边界优化算法和一个多级人眼检测方案。

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The outstanding feature of the proposed scheme is its object-oriented "1 + n" multi-redundancy and process-level redundancy technology, which improves system reliability.

方案的突出特点是采用了面向对象的“1 + N”冗余技术和功能级冗余，从而提高了系统的可靠性。

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Herbalife, a nutritional supplement company that uses a multi-level marketing approach, was labeled a pyramid scheme by Ackman days before Christmas, dropping the stock down more than 15 percent.

FORBES: Talks of Carl Icahn Getting a Piece of Herbalife, Joining Loeb in Long Position