Google Academic (GS) is a free academic resource search tool launched by Google at the end of 2004, which can help users find academic documents including periodical papers, dissertations, books, preprints, abstracts and technical reports, covering natural sciences, humanities, social sciences and other disciplines. Google Academic not only selects the content with academic value from the tens of billions of web pages collected by Google, but also obtains enough literature resources with academic value through cooperation with traditional resource publishers. At present, Google has cooperated with many scientific and academic publishers. They cooperate extensively with academic, scientific and technical publishers, such as ACM, Nature, IEEE and OCLC. This cooperation enables users to retrieve specific academic documents and obtain academic documents from academic publishers, professional groups, preprints, universities and the Internet through Google Academic, including peer-reviewed papers, dissertations, books, preprints, abstracts and technical reports in all research fields.

From the analysis of retrieval situation, Google Academic Search can be used for the following purposes:

1, learn about academic literature in a certain field. Because the collection scope is limited to academic literature, it will block out a lot of irrelevant information on the Internet.

2. Understand an author's writings and provide bibliographic information (book publishing information or periodical name and distribution information necessary for citation). You can directly search the original text, abstract, etc. On the internet; If it is a book, you can also search the books in the nearby library through library search (such as OCLC's Open WorldCAT).

3. Understand the citation of literature. You can directly click on Citation ... to find the cited literature.

4. Apply for and quote documents and periodicals.

1.2 Significance of Google Academic to Journals

Google academic literature ranking is strictly based on the academic value of articles, and the reference factors include the authority of documents, authors and publishers, and the number of citations. Research shows that readers with information needs obtain resources through the Internet. The first option is to conduct a large-scale search through search engines such as Google, and then consider using professional academic databases and reading academic journals. This order has become a social habit, so the higher the probability of appearing in search citations and academic databases, the greater the possibility of being concerned and read.

1.3 Evaluation Function of Google Academic International Journals

With the development and maturity of Google's academic field, Google's position in the world academic field is increasing day by day. On the evening of June 5438+February 65438+March 2004, Google announced its cooperation with the New York Public Library and the libraries of Harvard University, Stanford University, University of Michigan and Oxford University in the United Kingdom to scan the books of these famous libraries into electronic versions for readers to read online. By then, Google will build the world's largest online library. A series of actions by Google show that it is establishing a new academic information service system and creating new standards for academic evaluation. Moreover, Google's actions have won the support of the most famous libraries and database publishers in the world, such as ACM, Nature, IEEE, OCLC and so on. 2.2 Google Academic Scientific Ranking and Evaluation

Google Academic Citation Link allows people to soar freely in the world with traceable citations. Its basic data for citation calculation covers the most important databases in the world. No matter from which point of view, Google Academic is a tool that only focuses on academic search. Search results link to all web pages provided by database providers or publishers. Scholar does not provide any advertising links, and the sponsor links that appear in ordinary Google will not appear in Scholar, further ensuring the academic purity of Scholar.

2.3 Comparison between Google Academic and Google and PubMed

China scholars made a comparative study of these three search engines, and according to certain retrieval methods, they searched English references in PubMed, Google and Google Academic respectively. Results Google Academic scored higher than PubMed and Google, so Google Academic should be the first choice when searching for literature on public networks.

In a word, Google Academic provides a powerful academic search tool for scientific research users, which helps users to fully understand the first-hand academic literature in a certain field, and can also instantly verify that an expert has made too many contributions to science through a powerful academic web search. How many people quote or continue his research results not only supplements the shortcomings of narrow disciplines in professional databases (such as PubMed), but also makes scientists and their research results public through online academic search engines, making scientists' work performance more transparent, thus preventing academic fraud, unfair evaluation and other shortcomings. In addition, Google Academic supplemented the Science Citation Index (SCI), only paying attention to the journal impact factor (IF), ignoring the level evaluation of the article content, making the scientific and technological evaluation more fair and comprehensive.

FMJS and my FMJS system have the link function of "Google Academic Citation", which can help you find the most relevant research and as many full texts as possible in global academic research through GS, and can verify an expert's actual contribution to science and how many people have cited or continued his research results. Citation of Google Academic Link in FMJS service system: help users find the most relevant research and as many full texts as possible in global academic research, and verify an expert's actual contribution to science, that is, how many people cite or continue his research results. Sir Moore Gray, a professor of clinical knowledge at Oxford University Health Institute and director of the National Health Digital Library, has a famous saying: "Knowledge is the enemy of disease. By acquiring knowledge from practice, we will have a greater impact on health and disease than any medicine and medical technology in the next decade. " Therefore, it is not only the academic purpose of Google, but also the goal pursued by Jian Kang Company to retrieve high-quality medical literature to the maximum extent and provide it to medical workers.