An exponential analysis and projection of personal insurance premium income in China;

Insurance benefits is the one jmportant problem in the personal insurance contract theory.

Furthermore,the analyses on potential demand from the angles of personal insurance and property insurance indicated t.

This paper analyses the main mode exchange of IKE with digital signature,pointing out the existing security problem about identity protection of the initiator,which also can be found in IKEv2 with digital signature.

New modifications ar e proposed to alleviate the identity protection defects in Internet Key Exchange( IKE)protocol with digital signature authentication method and pre-shared key a uthentication method in main mode,compared with previous works which protect on ly one party,new modifications protect both identities of the two parties,rem aining the framework of ISAKMP and the symmetry of IKE.

Then it discusses the function of identity protection, and how to implement the identity protection in key exchange protocol, which protects the participants identity.

Combined with the idea "regarding the human being as the based" and the features of plateau,in this paper from some aspects several measures are proposed for personal protection in plateau to ensure normal construction and human health simultaneously.

Unfortunately, however, an obvious lack of concern in teaching bodybuilding and healthcare among students has come into being.

Research of strong proxy signature scheme with proxy signer privacy protection;