A: Because you provide too little information, there may be several main reasons: You are not within the IP range authorized by the database. Suggestion: Are you in the dormitory or in the campus network? Whether surfing the Internet in the city or in different places, there will be different information environments and different entrances to the database. You have selected the wrong database portal, and the IP range and objects of different database portal services are different. Your 1 reasons.
Suggestion: Please try to choose the database entrance from our library website. Suggestion: VIP database can be used in the following ways in the city: a. Directly through Google academic search, anyone with cqvip address can download the full text. B. Log in to Ningbo Digital Library directly and log in with your library card number. You can usually download the full text. If you can't download the full text, you can request the document to be sent, and the document will be sent to your email address soon. Wanfang data, please download the full text through the portal of our website.
Characteristics of Wanfang Database
◆ Resource integration
Strong data acquisition ability, massive information resources, various data and literature types, and the ability to integrate resources at all levels of Chinese and Western languages.
◆ Data processing
The largest modern data processing base in China, a complete set of standardized processing production lines such as high-definition scanning, artificial intelligence indexing, OCR recognition and PDF production technology. , with superior network operation capability, technical advantages, free information retrieval technology, concise and efficient full-text retrieval technology, distributed information processing and storage technology, network resource collection and integration technology, unified resource integration service platform knowledge chain and data mining technology.
◆ Information service
Digital library solutions, government project research capabilities, industry knowledge content construction, personalized information processing and services.
◆ Perfect system
Strong brand image maintenance "ISO" quality management system certification standardization customer service system perfect enterprise operation support standard customer training system
◆ Deep background
Deep background, mature marketing system, experience in participating in national basic research projects, and cooperation with superior brands at home and abroad.