By analyzing Q cluster and characteristic factor matrix, some basic types of coastal zones and their distribution were found by selecting seven characteristic factors in twenty-six districts of the coastal area in China.

The Principle of Eigenfactor Metrics and its Empirical Research

Eigenfactor and Journal Evaluation

This paper takes impact factor,5-year impact factor and eigenfactor as the original evaluation indicators for the evaluation on humanities and social science journals,analyzes the indicators by using factor analysis method,and considers the impact of these three indicators on journal ranking according to internal data structure to achieve a quantitative evaluation on journals.

The principle of the dynamics,the synoptic patterns and the circulation characteristic are given by using the NCEP/NCAR and ECMWF re-analysis data.

The abnormality of temperature in Beijing,the corresponding atmospheric circulation characteristics,and the relation with the antecedent SST over Northern Pacific are analyzed with the data of temperature in Beijing,500 hPa geopotential heights over the Northern Hemisphere,sea-level pressure and sea surface temperature(SST) over the North Pacific from 1951 to 2005.

The snow disaster variation and its circulation characteristics in the early winter are analyzed by use of the meteorological data of air temperature,precipitation and snow cover in the early winter over the southern Qinghai Province from 1961 to 2004.