The development of cross-border e-commerce logistics services has injected new vitality into the development of international trade, and therefore has become a new hot spot in theoretical research.In order to ensure the healthy development of cross-border e-commerce, it is urgent to build a set of scientific and effective evaluation mechanisms to s
The circular economy represents a form of corporate production with respect to environmental resources.In the past, these production systems were widespread on the basis of the non-removability of the production factors.The advent of economic growth, in capitalist economies, has led 401 to the deconstruction of production cycles resulting to a food
Predicting the degradation process of bearings before they reach the failure threshold is extremely important in industry.This paper proposed a novel method based on the support vector machine (SVM) and the Markov model to achieve this goal.Firstly, the features are extracted by time and time-frequency domain methods.However, the extracted original