From detaching himself from reality to going beyond oneself: the poet s emotion of relieving suffering world ebbed step from Huangchu to Zhengshi times;

Compare the Image of Jianan and Zhengshi s Poem;

Jianan and Zhengshi Writer s Officials as a Class Mindset and Their Poem Text;

This paper defines the positive start, the negative start, the positive termination and the negative termination about the Nyquist Locus.

The existence problem of the throughout positive solution for the second order nonlinear neutral self-adjoint difference equation is studied.

Using Banach contraction mapping principle,the existence theorems for throughout positive solutions with some limit behavior of this equation is obtained.

By introducing weighted norm and using the Banach contraction mapping principle we obtain the existence of throughout positive solutions for the above equations.

Analyzing the Meanings of "the Voice of Zhengshi":a Reply to Mu Kehong;

About my comprehension of "the voice of Zhengshi",and the meaning of "the voice of Zhengshi" in CHEN Zi-ang s "the preface or the chapter slim bamboo" is a phrase mean "poem of classic elegance",and CAO Pi s leading figures of the literary circles in the Jian an period,I still insist my original viewpoint,and do detailed argument.

Political Ambition of Zhengshi Mingshi:An Analysis of Xia Hou-xuan s Response to Sima Xuanwang s Current Affairs;