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Research on basic characteristics of complex system brittleness 被引量:10
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作者 JINHong-zhang GUOJian WEIQi LINDe-ming LIQi 《Journal of Marine Science and Application》 2004年第1期57-63,共7页
The goal of this paper is to research one new characteristic of complex system. Brittleness, which is one new characteritic of complex system, is presented in this paper. The linguistic and qualitative descriptions of... The goal of this paper is to research one new characteristic of complex system. Brittleness, which is one new characteritic of complex system, is presented in this paper. The linguistic and qualitative descriptions of complex system are also given in this paper. Otherwise, the qualitative description of complex system is presented at first. On the basis of analyzing the existing brittleness problems, linguistic description and mathematic description of brittleness are given as well. Three kinds of phenomena to judge brittleness of complex system are also given, based on catastrophe theory. Basic characteristics of brittleness are given on the basis of its mathematic description. Two critical point sets are defined by using catastrophe theory. The definition of brittleness and its related theory can serve the control of complex system, and provide theoretical basis for the design and control of complex system. 展开更多
关键词 BRITTLENESS complex system CRITERION basic characteristic catastrophe theory
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系词的形式与功能——兼论名词谓语句 被引量:9
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作者 张姜知 张颖 《外国语》 CSSCI 北大核心 2017年第2期62-72,共11页
前人对系词的认识,大致有"连接说""傀儡说""谓词说"三种观点。这些观点都有局限,特别不适用于汉语。本文从共时和历时的角度,跨语言描写系词隐现的规律,从而揭示系词的功能并解释名词谓语句,得知系词的... 前人对系词的认识,大致有"连接说""傀儡说""谓词说"三种观点。这些观点都有局限,特别不适用于汉语。本文从共时和历时的角度,跨语言描写系词隐现的规律,从而揭示系词的功能并解释名词谓语句,得知系词的作用是标明或强调"话题-述题"关系,即"增强标述性"功能。词类句法语法化程度较高的语言(如英语),系词是语法性质的、刚性的,语法上规定了系词是否出现;词类句法语法化程度较低的语言(如汉语),系词是语用性质的、柔性的,"话题-述题"关系是否明确或是否需要强调,决定是否出现系词。 展开更多
关键词 系词 名词谓语句 标述性 话题-
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