Advanced Materials Research Vols. 765-767

Abstract: A variety of identity-based encryption mechanisms are gradually developed since BF-IBE was proposed in 2001. However, since a users public key is fully open and cannot be modified, the key update issue needs to be solved urgently. And at the same time, hierarchical IBE has been proposed to reduce the burden of a single PKG. The paper suggests wildcards and put forward WIBE, which can make one-time encryption for user groups of HIBE. Then WKU is put out based on WIBE, which is a key updating mechanism in the measure of years and manages the expiration date of users keys.

Abstract: With the development of technology and applications of the Internet of Things, Things technology and industry being the attention from the government to enterprises and research institutions at different levels. The guarantee of Things safety is an important prerequisite to promote the healthy development of the Internet of Things. Articles oriented networking current mainstream architecture research from the three levels of perception layer, transport layer and application layer, the security threat of the Internet of Things, and appropriate security measures, provided for the establishment of the security architecture of the Internet of Things theoretical reference.

Abstract: On the basis of analyzing VPN network's flaw, designed and implemented a secure and reliable VPN networking model. The model adopts VPN over HTTP protocol and Kerberos to ensure the secure of identification authentication and data transmission. Finally, the paper gives the main algorithm and workflow of the model's Server and Client. Test results demonstrate that, this model has better performance in Maximum number of connection, throughput of system, data encryption, etc. The model suites to the needs of Network Development, has a very good application prospects on secure transmission of the remote.

Abstract: Food security is one of the biggest problems in China. Food security supervision (FSS) is thought to be the necessary means for it. But the FSS is facing new challenges with the coming of information era. According to the FSS chains, some challenges were analyzed. And then, measures based on IT for FSS are proposed. However, the subsequent IT-based FSS framework should be paid more importance because it could server the following two goals: (1) it provides a complete technology system for FSS based on information technologies. (2) The research could arouse more detailed IT-based application researches for FSS.

Abstract: The blending of liquors is a key process in the production of liquors. According to time-frequency localization characteristics of the wavelet transform and advantages of the neural network such as ability to develop, fault-tolerance, self-adaptability, self-learning, and robustness, a mathematic model based on wavelet neural networks is proposed in liquor blending processes with the help of computer-aided design technologies, which makes liquor blending technologies more scientific.

Abstract: The popular IP-based resolution service is subject to the source address confusion especially for the remote recursive resolver. Moreover, the current practice does not provide the IP-based resolution as an optional service. The paper proposes a scheme extends the EDNS0 flags field to introduce the non-soliciting indicator and uses an EDNS0 option to include client IP information in DNS messages. This extension helps to enhance the user experience as well as the overall performance.

Abstract: Security of mobile IP is very important for seamless roaming in heterogeneous mobile environments. Recently, Dang et al. proposed a new scheme for secure registration procedure of mobile IP. However, we found out that the scheme had three weaknesses in security or performance. In this paper, we point out the weaknesses of their scheme and give some improvements in order to achieve user privacy and protocol efficiency.

Abstract: In order to solve the problem that how to improve the efficiency of query and calculation in massive data, a method of building quotient cubes in Hadoop plateform which combined the advantage of the quotient cube and MapReduce model is proposed in this paper. At first, all cubes will be established and their aggregate value will be calculated in the Mapping stage. All the key/value pair formed in Mapping stage will be passed to Reducing stage. Equivalence partitioning will be carried out In this stage, and the minimum aggregation cube of each equivalence partitioning will be the key with its aggregate value. According to the minimum aggregation cubes, we can get the quotient cubes. In order to improve the speed of parallel computing and reduce network traffic, equivalence class division will be executed locally after the Map stage, it is named as combiner stage. In this paper, MapReduce model is used to improve the efficiency of building quotient cube because of its ability of parallel computing in a large amount of data. In addition, the experiment proved that, under certain circumstances, increasing the number of Mapper/Reducer task can reduce the building time effectively, and improve the construction efficiency.

Abstract: The traditional teaching evaluation system is high cost, complex and low efficiency. This paper proposed to use Struts and Spring and Hibernate framework technology to achieve the design of NTES based on MVC. It can remedy the defects in traditional teaching evaluation system. The NTES is now on trial and the result says that it not only can improve work efficiency, be operated simply, but also has good stability, maintainability and expansibility.

Abstract: In recent years, with the development of economics, Chinese government feels obliged to build a strong smart grid, state grid company starts the construction process of SG-ERP system comprehensively. However, system performance bottleneck gradually has been spotted due to expanding of IT systems. So it has important theoretical value and strong practical significance to do research on smart grid information platform. This paper proposed a framework of performance tuning for large transaction database used in smart grid based on state grid information platform construction, this method will break system performance bottlenecks, improving the service quality of the platform. The results show that the proposed method can greatly increase the quality of system running, and provide a reliable guarantee for the running in strong smart grid.