Previous studies have shown that product market competition has an important effect on corporate strategies and internal......

Internet is a tool for people to launch various activities based on information technol ogy. E-commerce, as one of the ......

It may be the longest suspension of initial public offerings （IPOs） in the A-share market， which forces investors to turn t......

In this paper we consider a specific model of membrane systems, i. e. membrane systems with attributes. In these systems......