As an invisible informal structure embedded within an organization, social network is closely related to the knowledge management activities and knowledge management strategies of the organization. The social network has the potential to obtain the right information or knowledge at the right time through the weak ties of the organization, to realize effective knowledge sharing in the organization with strong ties, and to commercialize knowledge using social capital to achieve economic success. By dividing the knowledge management process into three stages, including knowledge acquisition, knowledge sharing, and knowledge commercialization, the paper examines the role of weak ties, strong ties and social capital in knowledge management, and puts forward three hypotheses. Finally, the paper puts forward management suggestions for the construction of social networks in enterprisesю

The large-scale spread of R&D activities by MNCs to investment host countries is a new phenomenon of globalization in the past ten years. For the host country, especially a developing host country such as China, how to promote the spillover effect of TNC research and development institutions on the host country and curb its crowding-out effect is a new topic. This paper analyzes the R&D strategy adopted by transnational corporations in China. We explain the relationship between the strength of intellectual property protection in China and the choice of the organization form of R&D activities by transnational corporations with game theory and proves the relationship between the two with data. Finally, policy implications are proposed for the trend of sole proprietorship of R&D activities of transnational corporations.