The full-text database of excellent master's dissertations in China, with the most complete resources, the highest quality and continuous updating in China, has accumulated more than 370,000 full-text documents of master's dissertations as of February 65438+3 1 day, 2006.
1, browse by topic
All periodicals are divided into 9 albums according to the theme, and each album is divided into three categories. You can see specific articles by topic under the third category. If you enter the photo album "Electronic Science and Information Technology" of 1999, you can see seven first-class categories; Click on "Library and Information", and there are four secondary categories.
Click on "Information Science and Information Work", there are three three-level categories; Click on "Information Work" to get nearly 300 documents. This browsing mode enables users to query all documents on a certain topic, with clear hierarchy, convenience and quickness.
2. Retrieval method
Divided into "thematic retrieval" and "combined retrieval".
Special search: including full text, title, author, institution, key words, abstract, citation, journal name and fund. Keyword retrieval refers to the retrieval of keywords or subject words in papers, which is different from full-text retrieval; Citation retrieval is the retrieval of references after articles; Title retrieval enables users to browse all the files of periodicals.
Combinatorial retrieval: that is, through Boolean logical and or OR combination, nine retrieval fields in "special retrieval" can be retrieved.
3. Retrieval technology
Operator: The following operators are supported, but if no logical operator is added between words, the system defaults to all matches.
Boolean logic operators: Boolean logic operators can be used when entering search terms: logical sum is and or *, logical or OR or+,and logical non-.
Interception Operator: You can use "%"as the truncation operator. For example, you can use "intelligence%" in periodical title retrieval to retrieve publications such as Journal of China Science and Technology Information Society, Information Theory and Practice, and Modern Information.
Secondary search: after the first search, you can find the search box for secondary search under the search results, and you can conduct secondary search to make the results more accurate. The second retrieval also includes special retrieval and combination retrieval, and the method is the same as above.
4. Search results
Search results: Click the title of the article, and the search results will first display the original number, title, author, institution, keywords, abstract, journal name, fund and other contents. If there is no abstract, the first 300 words of the original text are displayed. If you need the original text, just click the number in the "original text" column.
File format: the periodical catalogue and abstract are in HTML file format, and the full text is in system-specific file format ". Caj "or" kdh”。 You must download and use the system-specific full-text browser on the homepage of China Journal Network.
Album theme: The products are divided into ten albums: Science and Technology A, Science and Technology B, Science and Technology C, Agriculture, Medicine and Health, Literature, History and Philosophy, Politics, Military Affairs and Law, Education and Social Science Integration, Electronic Technology and Information Science, Economy and Management. 10 albums 168 special literature database.
Literature source: Excellent master's dissertations from 652 national master's training institutions. See the list of degree-granting units.
Collection period: 1999 till now.
Update frequency: CNKI center website and database exchange service center are updated daily, each mirror site can transmit data through the Internet or satellite to realize daily update, and the album CD is updated monthly.