In mathematics teaching, the effective construction and solving of problem system can exploit the student's meta-cognition, train the thinking, enhance the cognition level end improve their ability of mathematics problem solving.
By collecting, classificating and studing of the achievements on DSC research and its products, the system modeling, control strategy, the controller development, performances evaluation on the DSC were summarized for the DSC development.
Some important issues, which include the general structure of fuzzy pattern recognition systems, fuzzy feature extraction, membership function construction, feature selection and pattern matching, etc.
In this paper, the method developed by R.L. Abrams and D.M. Hendorson generalized to deal with coupling losses of higher-order modes and cross-coupling different modes in hollow rectangular waveguide laser resonator. The transverse mode discrimination of waveguide laser resonator has been discussed and some valuable results have been obtained. It is notable that systematic analyses of problems mentioned above have not been seen in the present literatures
The traditional requirements for the antenna are reviewed. Under such background and on the basis of previous work, the subjects concerning the phase of antenna beam and the current distribution of antenna aperture, such as the phase reference point, the trans-formation'relationship of the far field patterns corresponding to different phase reference points of an antenna, the null level and phase difference between the adjacent beams, and the resolution of current distribution of the linear array are system...
Three typical distributed database management systems (DDBMSs), SDD-1、 SIRI-US-DELTA、and POLYPHEME, are briefly analysed with emphasis on their developing state, architecture and primary technical properties Some fundamental problems in the area of DDBMS、 such as method of construction, concurrence control、 and data model and data distribution, are discussed. The main characteristics of more than ten DDBMSs that have Played a more or less important role in the development of DDBMS are listed in the appendix.