期刊名称：Scientific Journals of the Maritime University of Szczecin
印刷版ISSN：1733-8670
电子版ISSN：2392-0378
出版年度：2005
卷号：6
页码：69-79
语种：English
出版社：MUS
摘要：Using Portable Navigation Systems (PNS) requires specially constructed inter– face while navigating in confined areas.User interface must be optimal according to its layout and navigational infomation shown on it.There is also a need to ana– lyze which information on the electronic chart is indispensable and which may be removed,without affecting the system s usabiliy.
其他摘要：A critical review of the various discourse theories is pre sented,the factors causing their appearance are identified.It is concluded that the variability of theories and methods in conducting discursive analysis determine the necessity of making choice of such a position,which involves the natural communication’s study,the subject–content side of speech communication and its social organization, the structural features of discourse study and its elements functions with the external context.
