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^(40)Ar/^(39)Ar-^(36)Ar/^(39)Ar等时线的原理和应用 被引量:3
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作者 李大明 李齐 +1 位作者 郑德文 胡世玲 《地质论评》 CAS CSCD 北大核心 2002年第S1期97-102,共6页
在详细推导^(40)Ar/^(39)Ar-^(36)Ar/^(39)Ar等时线理论公式的基础上,利用具体的实验实例说明这种等时线方法的意义;利用^(40)Ar/^(39)Ar-^(36)Ar/^(39)Ar等时线方法进一步探讨我国新疆南天山7个石英脉样品的等时线年龄,证实查汗萨拉锑... 在详细推导^(40)Ar/^(39)Ar-^(36)Ar/^(39)Ar等时线理论公式的基础上,利用具体的实验实例说明这种等时线方法的意义;利用^(40)Ar/^(39)Ar-^(36)Ar/^(39)Ar等时线方法进一步探讨我国新疆南天山7个石英脉样品的等时线年龄,证实查汗萨拉锑、银矿带的成矿时代为燕山期,成矿的时空特征呈现西部早、东部晚的趋势。 展开更多
关键词 40Ar/39Ar-36Ar/39Ar 等时线方法 成矿时代
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Robust synchronization of uncertain complex systems with time-varying delays
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作者 李海龙 席建祥 +1 位作者 李卉 曹耀钦 《Journal of Central South University》 SCIE EI CAS CSCD 2015年第2期584-592,共9页
Synchronization analysis and design problems for uncertain time-delayed high-order complex systems with dynamic output feedback synchronization protocols are investigated. By stating projection on the synchronization ... Synchronization analysis and design problems for uncertain time-delayed high-order complex systems with dynamic output feedback synchronization protocols are investigated. By stating projection on the synchronization subspace and the complement synchronization subspace, synchronization problems are transformed into simultaneous stabilization problems of multiple subsystems related to eigenvalues of the Laplacian matrix of the interaction topology of a complex system. In terms of linear matrix inequalities(LMIs), sufficient conditions for robust synchronization are presented, which include only five LMI constraints.By the changing variable method, sufficient conditions for robust synchronization in terms of LMIs and matrix equalities are given,which can be checked by the cone complementarily linearization approach. The effectiveness of theoretical results is shown by numerical examples. 展开更多
关键词 SYNCHRONIZATION complex system UNCERTAINTY time delay dynamic output feedback
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