精品论文Web Applications analysis and Design based onComputer Mediated Communication1Wang Wenxiu, Luo SiweiDepartment of Computer Science and Technology Beijing Jiaotong University Beijing（100044）E-mail: nju_wangwxhotmail.com, swluocenter.njtu.edu.cnAbstractThis paper introduces and analyzes the Web applications based on the point of view of computermediated communication through theories and examples. For instance, the Web based ICT technology was analyzed through the Medias Law which is a general guide for communication. Meanwhile, by discussing the communication history, I try to make the computer scientists aware that they are in the process of “communication revolution” of human being and as the protagonists they should have a high point of view of the whole society when doing research or design, favoring the positive ones and avoid the negative ones as possible as they could. From this article we can see that Web applications based on computer mediated communication has already changed or impacted the whole society. However, as the degree of development of Internet, the computer mediated communication revolution is only really at the beginning.Keywords: communication; CMC; virtual community1Intr oduct i on Nowadays, no matter what job you do, when you wake up or get into the office the first thing you do is to switch on your computer and connect to the Internet. Then you check your mailbox and see some news from the website instead of newspapers. Later, its time for the videoconference from where you boss assigns your work today. After the conference, you open your message, ask for the files that your need from your colleagues. During the lunch, you remember you need to shop for a new book, so you book them on eBay.When you finish the work day going home, you reflect upon how Internet and IT tools have become an indispensable part of your life: you could not imagine living and working without it. And to remember that a few years ago you wrote academic papers in that big library without knowing the existence of Internet.You cant deny that the Internet and CMC (computer mediated communication) tools are the newest and most powerful communication technologies. And they conquer the whole world at an unprecedented pace. When we get into the Internet era, people communicate and share information by “use hands without even open the mouth”. People influence each other just via the keyboard and mouse. They have changed our life style unconsciously: the way we cooperate, the way we learn, the way we buy, the way we service the clients, the way of our professional activities, and so on.Through the history, we can see that its not the first time a new communication technology has arisen and caused some changes in a society. From the original face-to-face communication, people have gone through from writing to press print, from the telegraph to the telephone, from TV sets to personal computers. Still no doubt, Internet and CMC tools are the strongest impact and most powerful ones so far. They can be considered as a milestone in this long history process. Another thing need to be paid attention is that most of the different ways of communication are coexist. The pre-existed technologies will not vanish because of the emergence of new technology.From this perspective, all the computer scientists are among the protagonists of the1 Support by Special Fund for Fast Sharing of Science Paper in Net Era by CSTD (20070004053).- 1 -“communication revolution”. This article aims at promoting a reflection on the impact of communication means, so as to enable computer scientists to aware of the opportunities, understand, predict and steer their effects, favoring the positive ones and trying to avoid the negative ones when inventing or designing CMC applications.2Comm unication Theor y2.1 Med i a ted Co mm u n i cati on Communication can be defined as an exchange of information that makes sense, i.e. an exchange of message. Human communication takes place under the mediation of some kind of technology: it can be mediated through the basic form of communication technology writing or through invented media, such as radio, television, chat, videoconference and so on.The following is a feature map of mediated communication. (It has to be saying that Face-to-face conversation is the only immediate setting of communication.) Even there is not a perfect communication way, but still you can make your best choice according to needs.Table 1: A map for mediated communicationFeatureSpCVisAInsEvRevRoken/o-presibilityudibilitantaneianesceniewabilievisab wriencetytycetyilityttenSettingFTFS+-conversation+Telephone conversationS-+-+LettersW-+E-mailW-?-+Chat,messengersW-+