This part analyses the advantages of interpersonal relationship in rural areas in the process of agricultural science and technology communication compared with organization diffusion and mass communication on the basis of social relationship, behavioral and psychological characteristics of peasants in rural communities, mainly dwelling on the three aspects -the advantages of peculiar communication of interpersonal relation net, the usage and satisfaction of peasants for communication media and the functional defects of organization diffusion.
It discussed the environment and current situation of educational TV and communication media, and then probed deeply into developmental opportunities and challenges that people faced in new century, and put forward the new ways and new tactics of the educational TV development.
It concretely analyses the impact upon school moral education, which comes from home education environment, off-campus environment, networking culture environment, and communication media such as films, TV, books and periodicals, etc.
Being communicated by mass communication media, these contents will intensity role-stereotypes in people's minds and gender division of labor in society, which is unfavorable to women's emancipation and development.
This paper introduced the comparison of five typical fieldbuses about FF, PROFIBUS, LONWORKS, CAN and HART form communication protocol, the communication media access mode and application range. It would help the user select proper fieldbuses to meet the requirement of industrial control.
First the building of Heilongjiang power data network was discussed, and then the communication media, the status of the equipment and automation system at present in Heilongjiang province was described, last the function, technique and equipment was analyzed in details in the paper.
A kind of High Speed Serial Link(HSSL) communication technology using optical fiber as communication media is designed to meet the demand of high speed interconnection between multiprocessors in hard real-time distributed motion control systems. The structure of HSSL physical layer,the protocol of data transfer layer and application layer and the FPGA programming method are described in detail.
As to the information exchange, it is the network topology structure and the communication media that directly determine the performance of communication network, which include the response time, the security, the electromagnetism compatibility, and so on.