为适应我国信息化建设需要,扩大作者学术交流渠道,本刊已加入“万方数据库——数字化期刊群”、《中国学术期刊(光盘版)》和《中国期刊网》等。凡向本刊投稿获得刊出的稿件,即视为作者授权本刊。本刊有权或授权第三方以其他形式(包括但不限于媒体、网络、光盘等介质)编辑、修改、出版和使用该作品,而无需另行征得作者同意,亦无需另行支 In order to meet the need of informatization construction in our country and expand the author’s academic exchange channels, we have joined the magazine “Wanfang Database - Digital Periodicals”, “Chinese Academic Journal (CD)” and “China Journal Net”. Any manuscript submitted to this publication for publication shall be regarded as the author’s authorization. This publication has the power or authority to authorize third parties to edit, modify, publish and use the work in other forms (including but not limited to media, the Internet, CD-ROM and other media) without the consent of the author or without separate consent