The Research And Application On Tache Of Evaluating In E-tender

E-Business, which is an important show of the network economy, substitutes many parts such as storage, transport and static of the information carrier in paper traditionally with the modern information to realize the online exchange among the commodity, services and management.The paper has introduced some problem about e-tender system and designed apply, optimize control in tache of evaluating particularly, with tender being subordinate line and tache of evaluating being main line, the same time analyzed the system's implement condition deeply, and used evaluation method based on BP neural network in tendering to compose the intellectualized system.Electron bid evaluation system construct web tender platform to realize bid evaluation of long-distance in the whole nation using technique as video conference, expert telnet. Email etc.. It will achive real name system, responsibility tracing system to prevent camera obscura operation and corruption, and realize "sunlight project" in bidding field.On the basis of the flow of E-tender, the paper designs and realizes the electron bid evaluation system combining with the enterprise's requirement. The network bidding system not only enhances the efficiency of bidding and procurement, promoting the spirit of openness, fairness and justness, but also guarantees the legal rights of bidders, provided the technology guarantee for impartially construct and preventing corruption.The securities of network and critical datum play an important role in electron bid evaluation. This paper has detailed introduced firewall, encryption and anti-encryption, digital signature; certificate authentication (CA) technologies, especially described the symmetry encryption and the non-symmetry encryption, certificate authentication and digital signature technology applied for sensible datum in network.The Next is the paper's framework:The First chapter is the introduction mainly about the meaning of the subject and the background. It also analyzes the present of the tache of evaluating in Web bidding System and points the deficiency.The Second chapter refers to the concept, the process and the main fashions of bidding. It also analyzes the system based on the needing of Enterprises.