Science is a science magazine. The magazine was founded in 1880 with Edison's investment of 10000 USD, and became the official publication of the American Association for the Advancement of Science (AAAS), the largest scientific group in the United States, in 1894 and 10. The annual issue of ***5 1 is weekly, with a global circulation of over 1.5 million copies.
This magazine, together with the British magazine Nature, is called the top two magazines in the world, representing the highest level of human natural science research. Most sci-tech journals charge readers for reviewing manuscripts, commenting and publishing. However, articles published in scientific journals are free. There are three sources of funds for its magazine: membership fee of AAAS, subscription fee of print and online edition, and advertising fee.
The American Science Citation Index (SCI) was founded by the institute for scientific information in Philadelphia in 1957, and it is a citation database created and published by institute for scientific information (ISI)1961+0. SCI (scientific citation index? ), EI (engineering index), index of scientific and technological conference proceedings? ) is one of the three world-famous scientific and technological literature retrieval systems, and it is an internationally recognized main retrieval tool for scientific statistics and scientific evaluation, among which SCI is the most important, and its founder is eugene garfield (,1September 6,1925 ~ 201February 26, 7).