Trans-boundary has become not only a trend but also an important requirement and feature of Modern Service Industry. In Internet era, crossover service not only changes people's daily life, but also has a profound impact on the business model of traditional industry. However, because of the complexity and convergence of crossover service, it is difficult to analyze and identify whether crossover services are valuable and how to achieve them. In order to solve the problems, the analysis framework of crossover service is proposed from the perspective of value creation and realization, which includes four main parts: value assessment, data analysis, capability analysis, and execution path. Based on the proposed method, the New Retail in China is given as a case study to clarify the implementation process of crossover service. Furthermore, JD (self-employed mode) and Alibaba (platform mode) are taken as examples to explain how to migrate from different e-commerce models to the New Retail model. By introducing computational experiment, the performance of different execution paths can be evaluated. The comparison of experimental results with the reality shows that the proposed method can provide a roadmap for the implementation of crossover service.

The quadrotor aircraft has the characteristics of nonlinearity, strong coupling and underactivity, which is a useful tool for researchers to test and evaluate new ideas in many different fields, including flight control theory, real time systems, and robot navigation. In order to reduce the non-essential disturbance factors and accident rate during the flight, and we independently design a test platform to test quadrotor flight attitude. Through the force analysis and dynamic modeling of the system, the attitude controller is designed by back-stepping control algorithm which can stabilize quickly. The stability of flight attitude is verified on Matlab environment and the platform respectively. The experimental results show that the platform design is reasonable and feasible, and it is an effective test platform.