国家自然科学基金61202004,61472192;教育部科技发展中心网络时代的科技论文快速共享专项研究2013116;江苏省高校自然科学研究计划14KJB520014The National Natural Science Foundation of China61202004,61472192;The Special Fund for Fast Sharing of Science Paper in Net Era by CSTD2013116;The Natural Science Fund of Higher Education of Jiangsu Province14KJB520014