With the development of component technology, component granularity plays a very import role on the complexity of component composition. How to assemble the component of big granularity? How to make the component in the same domain integrated? Application framework brings the new era of software-reused technology. But how to construct application framework to make it higher reuse? According to the current research of application framework, the paper gives a hierarchy model; The model divides application framework into several layers. Different application framework in different layer has different solutions and the higher the application framework stands in, the lower the probability of change is.

介绍了L2TP协议和VPDN技术的基本原理,分析了L2TP协议实现VPDN时存在的安全问题,提出了研究VPDN技术的必要性,在对L2TP隧道协议进行分析的基础上,最后给出了VPDN技术的应用实例。

In this paper,the steps of Web-based Information Mining technology are described in detail with a search instance which is designed by author firstly,and on this basis,the key technologies used in the information miming are discussed.Finally,the prospect of application of the information mining technology is put forward.

多元智能理论由美国著名心理学家加德纳提出,在学界具有极其重要的影响。在成人信息技术课程中,有必要将多元智能理论应用于其中。应根据多元智能结构理论和成人的学习特点,开发成人信息技术课程。

The traditional model of resource sharing has the problem of insecurity of resource itself, thus, it is easy to cause malicious disclosure of shared resources. According to this, in this paper, we design a hierarchical sharing model with high security based on TPM, and describe the access mechanism of the model.