In order to research the long-term disruption influence on supply chain and the performance that contracts exert on supply chain when disruption happens, this paper constructs a VMI three-echelon supply chain model based on system dynamics. Through dynamic simulation of the model, the total inventory, total profit and market demand shortage data are respectively collected under conditions of no disruption, manufacture disruption and transport disruption. By descriptive statistical analysis of these data, we find the disruption has secular and hysteretic effect on the supply chain. Furthermore, T test is used to testify the contracts effectiveness on the supply chain under disruption conditions. These analytical results show that quantity discount contract and revenue sharing contract can effectively relieve the negative influence on the supply chain when disruptions happen, since they not only enhance the total profit but also stabilize the fluctuation of the supply chains total inventory, whereas the contracts do not perform well in satisfying the market demand shortage.

As the born and communication base of new science and new technology, scientific research requires effective information integration and knowledge management to improve the efficiency of scientific research. The growth of e-science in circumstance of Web 2.0 has created a need to integrate large quantities of diverse and heterogeneous data. To tackle with the scientific information management problems, we proposed an ontology-based scientific keywords recommendation system under web 2.0. The main goal achieved is to extract the meaningful information and recommend to web scholars through the proposed system. The components of the system are Integration Interface, Service Module, Text Processor, Recommendation Module and Ontology Database. Experimental results and performance evaluation shows that the proposed system provides the effective way to recommend semantic related keywords for scholars.

The insurance industry is highly dependent on information technology, which leads to the fact that the information system security is directly related to the security of the entire insurance industry, even if the stability of the entire nation's financial system. Therefore, the following issue need to be solved, how to design and establish the risk assessment model of information security based on the actual situation of China's insurance industry to prevent and face the complex and changing internal and external conditions.