求翻译：鉴于Pull模型和Push模型的不足，就需要寻求一种新的基于 SAML的单点登录模型，以简化单点登录系统的登录过程。有人在这两种模型的基础上进行改进，提出一种新的基于SAML的单点登录模型，改进的目标是解决上述三点不足。使得包含声明的令牌仅在主体与源站点以及主体与目标站点之间进行传递，而源站点和目标站点之间无需进行安全信息的互传，并且使令牌的维护工作由代表主体的客户端来完成。是什么意思？

Given the lack of pull model and push model, you need to find a new model-based single sign-on saml single sign-on system to simplify the login process. Some improvements on the basis of these two models, put forward a new model of saml-based single point of login, improved goal is to solve the abov

Given that Push Pull model and the model, you need to seek a new SAML based on the Single sign-on models to simplify single sign-on login process. It was in the two models on the basis of the improvement, a new SAML based on the Single sign-on model, and to improve the objective is to address the ab

In view of the lack of Push and Pull model model, on the need to seek a new SAML-based single sign-on model, the login process to simplify single sign-on system. Improvement on the basis of these models, put forward a new SAML-based single sign-on model, insufficient improvement goals is the solutio