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On the Lagrange Stability of Motion and Final Evolutions in the Three-Body Problem
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作者 Stepan P. Sosnitskii 《Applied Mathematics》 2013年第2期369-377,共9页
For the three-body problem, we consider the Lagrange stability. To analyze the stability, along with integrals of energy and angular momentum, we use relations by the author from [1], which band together separately sq... For the three-body problem, we consider the Lagrange stability. To analyze the stability, along with integrals of energy and angular momentum, we use relations by the author from [1], which band together separately squared mutual distances between bodies (mass points) and squared distances from bodies to the barycenter of the system. In this case, we prove the Lagrange stability theorem, which allows us to define more exactly the character of hyperbolic-elliptic and parabolic-elliptic final evolutions. 展开更多
关键词 LAGRANGE Stability DISTAL MOTION HILL Stable Pair final evolutions
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苏北方言的边音韵尾 被引量:3
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作者 冯青青 《语言科学》 CSSCI 北大核心 2014年第1期105-112,共8页
苏北多数方言点保留入声韵,其中五个点的入声韵收边音尾。文章分析苏北方言边音韵尾的古音来源,讨论边音韵尾的演变过程,认为边音尾由t尾演变而来,最后又演变为零韵尾;受强势读音的影响,边音尾也可能被喉塞尾替换。
关键词 苏北方言 入声韵 边音韵尾演变过程
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