Through the study of the preface of "Record of the Heavenly Goddess Making Her Presence Felt", this paper points out that the book was compiled by Lin Yaoyu and Lin Lanyou who referred to local chronicles and finalized and printed by Qiu Renlong.

Wang Ming-sheng demonstrates tenets of realistic approach in The Examination and Correction for The Seventeen Ancient History Books from three sides: declaring the tenets of the realistic approach in the preface,achieving realistic approach through textual research;judging history works based on realistic approach.

As one of the literary style in ancient time, preface in essay form has made considerable progress in the Tang Dynasty.

Variance tendency in the 50-year annual meteorological and hydrological series of Hexi region of Gansu Province;

In order to compare and analyze the performance of hydrological time variation series change-point testing method,three types of hydrological series are generated by hydrological variation series generator,and statistical experiment is used to analyze the performance of the 10 variation series testing methods.

In order to describe the detail structure of the complicated hydrological system, the statistic characteristics of hydrological time series have been probed based on the multi-resolution of wavelet analysis and fractal theories.

Effect of urbanization on hydrological sequence of water supplying rivers;

Using it,the period that is implied in hydrological sequence can be detected.

Research and development of the program file based on I-DEAS;

Combined with of the development of instrument modeling design system,the method of parameterized design based on I-DEAS Program file is achieved.