Open access resources refer to resources composed of peer-reviewed periodical papers, academic conference papers, technical reports, dissertations and working papers. "Open access" means "free access to files on the public Internet, allowing any user to read, download, copy, publish, print and search, or providing links and indexes to these files, incorporating them into software as materials, and any other applications permitted by law. There are no financial, legal or technical obstacles to these uses, unless the Internet itself creates obstacles to data acquisition ". "The only restriction on reproduction and distribution, and the only function of copyright, is to ensure that the author himself has the right to protect the integrity of his work. If others quote this work, they should express their due thanks and indicate the source. "

Sokole (/)

Socolar platform contains a large number of open access journals and academic resources stored by open access institutions, and provides one-stop article-level retrieval and full-text link services to end users:

The 1. platform provides: 6 1 16 open access journals; 842 warehouses of open access institutions; A total of more than13.27 million bibliographic information and links.

2. Subjects involved: medicine and health: 1274 species; Humanities and social sciences: 575 species; Economic category: 358 species; Life sciences: 374 species; Industrial technology: 659 kinds; Others and so on. : 4,429 species. More than 90% linked journals have passed peer review: BMC, SAGE, OUP, HighWire, Jstage, etc. It contains very influential warehouses of open access institutions, such as ARXIV, PMC, REPEC, Cog Printers, etc.

3. Retrieval methods: simple retrieval, advanced retrieval, expert logic retrieval and wildcard retrieval. Developed by China Education Books Import and Export Corporation, the system provides free retrieval, downloading, printing and copying services for readers.

Attachment: Socolar User Guide. ppt

Hans Journal (/)

OALib is the abbreviation of Open Access Library, that is, open access library, which is committed to providing comprehensive, timely and high-quality scientific papers for academic researchers to read for free. At present, there are 994,092 English periodical articles registered and downloaded free of charge in the Open Access Library, most of which are from internationally renowned publishing institutions, including Hindawi, Plos One, MDPI, scientific research and publishing, and some high-quality articles from Biomed and PMC, covering many fields such as mathematics, physics, chemistry, humanities, engineering, biology, materials, medicine and humanities.

At present, OA resources on the Internet are scattered, and OALIB can provide search methods conveniently, so that scholars can search for high-quality papers through keywords in the shortest time. At the same time, Oalib is constantly striving to increase the number of papers and let more free OA articles join OALIB. It is estimated that by the end of 20 13, the number of articles in OALIB will reach1000000, benefiting more scholars.

—— From the library of Chaohu College.