Applied Mechanics and Materials Vols. 241-244

Abstract: With the putting forward and continuous expansion of the IEC 61970, the data interaction among heterogeneous system becomes possible, and continues to be put into practical application. In this paper, Firstly, CIM (common information model) was introduced, and the CIM/XML format was used to describe SCADA data. Secondly, SCADA data were analyzed and stored in database through the program. Finally, the specific application of analyzing SCADA data is described through the application in area of voltage Sag.

Abstract: Various video compressed coding standards have been established with some differences broughtby buildersfollowing the requirements on the data of voice and image, and developed continuously subject to people’s demand of people. Now, video compressed coding research divides into two main directions: one is that DCT hybrid coding scheme based on tradition; the other is the coding scheme built from the objects put forward based on the 2nd generation image coding technology. The object-based coding method can actualize both the function that enlarges image data compression ratios and the man-machine interaction, giving our projection of the future video compressed coding development direction. In this paper, the object-based coding model selection algorithm is studied, and using the concepts of video object in MPEG-4, the method of splitting video is given.

Abstract: As the content delivery network becomes widely-used, storage has emerged as a typical kind of service in the cloud environment. This paper conducted a research on the management issues for such applications, and implemented some meta-services upon the underlying cloud services. The architecture of the system was described in detailed and the detailed design of four types of meta-services was further discussed. Experiments show that the implemented prototype can work effectively and meaningful suggestions could be given according to users’ requests, and thus depict the advantages of employing the proposed meta-services.

Abstract: This paper describes the research on the method of orthogonal three-direction chain code (3OT) used in corner detection of hand gesture. The research is discussed from two aspects: the main idea of 3OT and the experiments on corner detection for hand gesture images of 26 letters in American Sign Language by using 3OT. Experiment results show that the method has well performance with exact corner detection rate and least false corner’s number.

Abstract: The importance of spatial data infrastructure for urban management, basic data element mesh data, component data, geocoding data statistics, the final data integration, sharing and analysis to improve access to digital data, and promote the standards of the urban management approach to enhance the urban management of spatial data analysis to provide a reference for future urban management.

Abstract: Cloud computing is baseline to invent next generation systems. As computer science is progressing by steps of cloud computing, same as requirements gathering, analysis in cloud computing getting more potential. The cloud computing enables services to fulfill requirements of cloud end-user, according to service level agreements. Data services over cloud also getting more potential especially real-time database systems are more critical to meet customer requirements over cloud. We will elaborate and present detailed analysis about requirements for real-time database systems over cloud, as well identify challenges and issues for RTDBs (real-time database systems) in cloud computing. There is need to ensure quality of service (QoS) as guaranty to meet requirements of RTDBs.

Abstract: This paper proposed the algorithm of the sky color rendering based on the relationship between the height of viewpoint and the altitude of scattering point with atmospheric density after the study of atmospheric absorption and scattering and sky illumination simulation methods. The geometrical model of the sky dome and rotation and the sun location is presented. The rendering method based on GPU is designed. The results of experiment show that the rendering effect of the sky illumination based on this algorithm is realism.

Abstract: This paper analyzes and proves that the relationship between the output results of the homotypic Toffoli gate which is series cascade and the number of the gates which are series cascade. In order to guarantee the convergence of the process of the series cascade, we gave the counting results of the series cascade network for Toffoli gates, and proved that in the input vector (0, 1, …, 2n-1), the number of the bit vectors with Hamming weight H(w)≥n-1 is equal to the bit number of bit vectors plus 1, and obtained the conclusion that there are (n+1)! kinds of transformation for Toffoli gate series cascade network. Simultaneously we provide the series cascade network algorithm of the Toffoli gates. The reversible network cascade system designed by the above algorithm verified the validity of this algorithm.

Abstract: In view of the developing status of agricultural information system up to date, this essay, based on WebGIS, introduces the design and realization of information system for the agriculture information on a basis of NET by using MapGIS-IMS as the tool for the build-up of GIS, Which has the agricultural information system function for all levels from the use of agricultural management department, realize information inquiry management, statistical analysis and release function.

Abstract: The calculation subsystems of the power quality intelligent information system will face many types of monitoring data source, and when different data sources provide data for calculation subsystem, it does not need to change algorithm but need to change the way how to get the data needed; then how to make the calculation subsystem does not alter with the change of data provider becomes a necessary demand;Aiming at the problem this paper put forward a set of solutions, which are dependent on dependency-injection, to help the calculation subsystem in multiple data source supporting.