1, China HowNet: It is the most authoritative academic resource library in China, providing rich Chinese literature retrieval resources. Academic journals and important conference papers covering various disciplines are one of the first choice tools for Chinese literature retrieval.
2. Wanfang Database: It is also a well-known literature retrieval tool in China, mainly targeting digital journals in the fields of engineering, science and medicine, including dissertations, conference papers and periodical papers. At the same time, it also provides some characteristic data resources, such as invention patents and scientific and technological achievements.
3.PubMed: It is a database service system provided by the Drug and Biological Resources Research Center established by the National Institutes of Health (NIH). It is the earliest biomedical literature database in the world, including biomedical journals from 65438 to 0950, covering a large number of clinical trials, disease diagnosis and treatment guidelines, case reports and other documents.
4. Science Network: It consists of SCI and citation index, covering many disciplines. The core journals on the science network have an important influence on academic evaluation and are an important window to understand the scientific research situation in colleges and universities.
Basic methods of literature retrieval;
1, sequential search method: sequential search method is to search for a certain topic step by step and systematically according to the time sequence from the past to the present, using the literature from far and near. This method is suitable for large-scale literature retrieval and can fully understand the systematic situation of a certain subject. Using the sequential search method, you only need to input keywords in turn according to the time development order of the search topic to search.
2. Backward search method: The recently started backward search method refers to documents from near to far, which is especially suitable for searching short-term documents. This method is especially suitable for understanding the recent research trends and the latest research results. Using backward search method, you can first enter a recent date, and then select the latest literature or the latest entrance to search, so that you can quickly get the latest literature.
3. Spot check method: Spot check method refers to the regular or irregular sampling retrieval of a large number of documents in a certain period, a certain specialty or a certain theme. This method is suitable for understanding the research trends and latest achievements in a professional field. By means of spot check, you can select appropriate professional fields, search through professional search engines, database websites or forums, and conduct regular sampling inspection as needed.
4. Traceability method: Traceability method is a retrieval method to obtain relevant documents by searching the references listed at the back of the document and tracing the original text one by one. This method is suitable for in-depth understanding of the research data of a topic. Using backtracking method, you can first enter keywords to search, and then read the references carefully to find other documents you need.