1, Wan Fang Data: A well-known academic literature retrieval database in China, which contains a large number of scientific and technological reports, papers, periodicals, conferences and other documents. Users can search by keywords, authors, units, periodicals, etc., and provide literature download and export functions.
2.CNKI (China Knowledge Network): It is one of the well-known academic resource banks in China at present, including literature retrieval, literature delivery, literature consultation and other services. CNKI contains a large number of academic literature resources such as papers, periodicals, newspapers, doctoral and master's dissertations, conference papers, and scientific and technological reports. CNKI has the characteristics of fast retrieval speed, real-time updating of retrieval results and comprehensive content.
3. The United States Patent and Trademark Office (USPTO) is an organization specializing in the patent field in the United States, providing search services for patents, trademarks, copyrights and other resources. Users can search related scientific and technological reports by keywords, patent numbers, etc.
4. Sci-tech document service system (STIC): The retrieval database of sci-tech reports developed by China Institute of Sci-tech Information (ISTIC) provides sci-tech document resources from 22 countries and regions around the world, including periodicals, papers, conference papers, newspapers, monographs and sci-tech reports. Users can search by Chinese and English keywords, authors, units, etc.
5.Google academic search: it is a sub-service of Google search engine service, providing online scientific and technological report retrieval function. Users can search related documents through various channels, such as keywords, authors, units, etc. At the same time, it has the characteristics of rich retrieval results and fast speed.
Similarities and differences of retrieval tools for scientific and technological reports
1, rich in resources: the retrieval tool of scientific and technological reports has collected a large number of academic documents, including periodicals, papers, newspapers, monographs, scientific and technological reports, etc., covering a wide range and rich in content.
2. Flexible retrieval methods: The retrieval tools of scientific and technological reports provide a variety of query methods, such as keywords, authors, units, periodicals, etc. So that users can easily find the required documents.
3. Real-time update: The scientific and technological report retrieval tool will update its retrieval database in real time to ensure that users can obtain the latest and most authoritative scientific and technological report information.
4. Easy to download and export: Scientific and technological report retrieval tools usually provide functions such as downloading and exporting documents, so that users can easily obtain the required documents.
5. Fast retrieval speed: The retrieval tools of scientific and technological reports all have the characteristics of fast retrieval speed, and users can find the information they need quickly and accurately.