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The outbreak of the scientific and technological revolution has brought about the vigorous development of the digital economy. Many short video APPs have gradually come into people’s sight and become important tools for leisure and entertainment. At this time, improving user stickiness has become the key to their competitiveness and long-term development. As a major feature of short video platform, information recommendation plays an important role in the sticky behavior of users. Therefore, targeted research on the internal mechanism of platform recommendation information features for user stickiness will help to improve the platform user stickiness. Based on the stimulus organism response theory, this paper constructs a theoretical model of the impact of the characteristics of recommendation information on the user’s sticky behavior during the use of mobile short video, and investigates 336 mobile short video platform users through online questionnaires. The research shows that the accuracy, benefit, interest and surprise of mobile short video recommendation information have a positive impact on users’ flow experience and sticky behavior; The flow experience has a positive impact on the sticky behavior of mobile short video users. This paper puts forward management suggestions for the management and operators of mobile short videos to help them optimize the design of their products, and recommends more accurate, profitable, interesting and surprising information based on user characteristics to stimulate users’ flow experience, thus improving users’ stickiness and helping enterprises achieve long-term development.

With the advent of the Internet era, the new mode of live delivery of e-commerce has gradually entered the view of the audience. Live shopping through its strong interactivity, accurate transmission, content diversification, Quickly become the hottest online shopping mode. In this paper, through the relevant research on the impact of the live broadcast on on purchase behavior, a theoretical model reflecting live broadcast characteristics, perceived value and consumer purchase behavior is constructed and empirical research is carried out. The results show that the popularity, interactivity and personalized service of anchors in webcasts positively affects consumer purchase behavior; perceived value plays an intermediary role between live broadcast characteristics and purchase behavior.

Because of the noticeable advantages of plate heat exchangers compared with tube heat exchangers, it has been widely applied and researched. However, in the process of practical application, it is easy to find that the performance of heat exchangers produced domestically and from developed countries are quite different, which is one of the key factors that restrict the wide application of domestic plate heat exchangers, there are few studies on this subject yet. Thus, the paper analyzed the main difference of thermal capacity between a domestic and foreign plate heat exchangers through experimental researches, and the results all show that, foreign plate heat exchangers has a more superior thermal capacity and heat exchange efficiency than domestic one, which is in purpose of offering some guidance on technical improvements and applications in the future.