对我们所处的时代，有人说是信息革命时代，近来又有人称网络化时代，还有人叫做数字化时代。其目的是说：我们面临的时代正在发生变革，给科学、技术、经济、教育以至于生活方式都带来了变革性的影响。这场变革的带头羊是计算机和通信技术，它们把我们引入了“网络化世界... In the age in which we live, some people say that it was an era of information revolution. Recently, some people call the era of networking and others the digital age. Its purpose is to say that the times we are facing are changing and bringing a transformative impact on science, technology, economy, education and even lifestyles. The leader in this revolution is computer and communications technology that brought us into the "cyber-world ...