empirical examination of IPO long-term weak trend in Stock market has been carride out,while the stock market in our country is still not mature and has the different characteristic,comparing with the stock market of developed countries.

It is not only helpful for advancing social fairness,but also promoting educational fairness to care for the volnerable parents.

Analysis of long-term trend of annual runoff of Geheyan Reservoir;

The adjusted long-term trends were obtained through the sum of trends that extracted by EMD and long-term cycle components.

In the light of the long-term trend and cyclical fluctuation of China's phosphate fertilizer out puts during the period of 1978～2005,the development of phosphate fertilizer industry in China is predicted,and some suggestions are proposed for improving this industry.

This paper analyses the long-term tendency and the reasons of the growth of Chinse juvenile after China s reforming and opening.

We can know the development tendency of criminal cases in Shanxi by long-term tendency,season changing and tropical analysis.

Distributions and secular trends of nosocomial infection incidence rates in urinary tract in a hospital;

Objective Due to the accelerated growth of Chinese children, the secular trend of accelerated skeletal development was observed in this study in order to provide the evidence for using the standards of skeletal maturity in reason.