唱响时代新旋律共绘长江新画卷——《新时代“长江之歌”》

在浩瀚的历史长河中,长江以其奔腾不息的姿态,滋养了华夏大地,孕育了灿烂辉煌的中华文明。长江文化是独特的流域性文化,是中华传统文化的重要组成部分,其富有创造性的文化精神历久弥新。长江文化细腻精致,浪漫潇洒,恣肆豪放,兼容并蓄。曾有学者从文学角度进行比较,认为黄河流域文学以《诗经》为代表,充满了浓郁的现实主义风格;长江流域文学以《楚辞》为代表,屈原、李白、苏东坡等来自长江边的作家潇洒不羁,尽情挥洒着浪漫激情,他们的文字让人联想起那奔腾不止、浩浩汤汤的一江碧水。

Noncontinuous Solitary Wave Solutions for Double sine-Gordon Equation

Using the tanh method and a variable separated ordinary difference equation method to solve the double sineGordon equation, we derive some new exact travelling wave solutions, especially a new type of noncontinuous solitary wave solutions. These noncontinuous solitary wave solutions are verified by using the conservation law theory.