Searching for agricultural scientific and technological documents and materials

Introduction: this online news: the first large-scale integrated service system in the field of agricultural science and technology in China, which is independently developed by the Institute of agricultural information of the Chinese Academy of Agricultural Sciences, is now officially launched (www.nais Net CN) The platform is a "one-stop" service platform integrating data query, knowledge dissemination and information service on the basis of fully integrating the rich collection information resources, systematic information research results and various information service contents of National Agricultural Library and Agricultural Information Research Institute The platform realizes the intelligent collection and classification of network information, the comprehensive integration of information subscription and push It not only collects rich agricultural information resources, but also realizes the technical innovation and breakthrough in the field of network agricultural information service, builds the bridge of agricultural information service, and greatly improves the wide area and pertinence of service Dr Xu Shiwei, director of the Institute of agricultural information, Chinese Academy of Agricultural Sciences, told reporters that the National Agricultural Library has rich literature and information resources, ranking first in Asia and third in the world With the sense of responsibility and the spirit of daring to tackle key problems, and relying on its own information technology research and resource advantages, the agricultural science and technology literature and information integration service platform independently researched and developed successfully has not only improved the traditional service modes such as arrival, borrowing, telephone, fax and mail, but also complied with the development of the times The new situation of agricultural science and technology innovation is a strategic choice to meet the challenges of agricultural science and technology information service at home and abroad The opening and effective use of the platform not only marks a new level of agricultural science and technology information research and service work in China, but also effectively promotes and improves the rich agricultural science and technology information resources accumulated in China for a long time to play its due benefits, and constructs the agricultural literature information to provide important support for solving the "three rural" problems and promoting agricultural science and technology innovation Long term mechanism of guarantee It is understood that China Agricultural Science and technology literature and information integration service platform mainly consists of five parts: service guide, catalog search, resource search, information service and special information, with the latest resources, relevant links, service announcements and other auxiliary columns "Service guide" mainly shows the resources and services of agricultural information, conveys the feedback of users and answers them "Catalogue search" provides the function of online search, browsing all the documents catalogue of the National Agricultural Library and the latest purchased books, periodicals, audio-visual materials and other documents "Resource retrieval" enables users to quickly and easily browse and retrieve all electronic resources built and purchased by themselves, including Chinese and foreign online databases, e-books, e-journals, CD resources and featured collection services including ancient books databases In the information service column, users can not only enjoy the all-weather original text supply and document expansion services, but also get a variety of services such as well-organized network reference consultation, topic setting service, SCI consultation service, information subscription and push, online resource recommendation, agricultural website navigation, etc And "special information" shows the unique agricultural science data, agricultural research report, paper monograph, special literature, agricultural scientific and technological achievements and agricultural scientific and technological journals of Agricultural Information Institute of Chinese Academy of Agricultural Sciences to users, which can help users understand the latest trends of domestic and foreign agricultural science research fields, and provide users with authoritative discipline strategic decision-making services According to Dr Zhao Ruixue, China Agricultural Science and technology document and information integration service platform has realized eight technological innovations in the field of network agricultural information service: 1 Strictly standardized development process management The platform carries out object-oriented programming and development in strict accordance with CMMI standard process, uses international standard Unicode, supports various language versions, and can be freely converted between Chinese / English and other languages in the browser; the program has good standardization, stability, openness and scalability 2 Flexible network structure The platform adopts the network structure based on the link mode, and the integration between relatively independent systems is carried out through the hyperlink, which ensures the flexibility of the platform system and the independence of the development and maintenance of each subsystem 3 Scalable platform functions The content management system of the platform makes it possible for non information technology personnel to expand and modify the column structure and content of the system through non coding, which will greatly increase the maintainability and scalability of the platform system It will also reduce the maintenance cost of website content and shorten the update cycle 4 Leading digital information collection and push technology The platform realizes the integration of intelligent collection and classification of network information, information subscription and push The intelligent collection system can collect and filter all kinds of websites except the "content encryption" website, and provide agricultural information classification based on a variety of classification and word segmentation algorithms, which is in the leading position in China The information push system supports the user's One2One personalized interface login and information customization, and the system can send the information meeting the user's needs to the designated email account according to the set cycle The RSS (Really Simple Syndication) channel subscription function provided by the platform allows users to automatically get the latest news and news of the platform without visiting the website This is of great significance for users who need to master the research dynamic frontier in a certain field, and also makes the construction level of service platform enter the advanced ranks of similar systems 5 Efficient cross database and integrated retrieval technology Using Java, XML technology, the platform provides users with a web-based "one-stop" network database integrated retrieval service Users can select multiple database resources at the same time, submit retrieval requests to multiple resources from the same retrieval portal, and display the retrieval results uniformly In China, it is the first to download the information attachment, support the integrated retrieval of super complex network database, fault-tolerant control and management of concurrent access of heterogeneous database, and asynchronously refresh the results in the integrated retrieval process 6 Expanded information service space Through the HTTP forwarding communication technology between the forwarding agent server and the IP binding terminal, the platform realizes the seamless integration service of the collection of primary literature, secondary abstracts and Electronic Full-text No matter where users are, they can access the literature of the limited access network database 7 Personalized value-added service mode The personalized value-added services provided by the service platform will provide more intimate services for each registered user Registered users can comprehensively and meticulously master their own use of the platform by consulting my questions, my orders, expense details and other columns, which will improve users' trust and dependence on the service platform and enhance the affinity of the service platform 8 Complete e-commerce service mode The original document delivery system of the service platform provides a complete e-commerce service mode from original document selection, ordering, payment, sending and receiving.