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This paper proposes the design scheme of "back-loaded" pulsed antenna. A sector antenna and a rectangular antenna are made on the basis of the method. Based on the measured radar data, the differences among the above-mentioned new scheme, a non-reflecting continuously resistive loaded cross dipole antenna and a double diamond antenna are discussed. It results in the confirmation of the superiority of the "back-loaded" design scheme. 本文提出了“背载”式脉冲天线的设计方案,并以此制作了扇形臂和矩形臂天线。利用实地探测数据,将上述新方案与无反射式连续电阻加载正交偶极天线和双菱形天线进行比较,从而肯定了“背载”式设计方案的优越性。 Porter's introduction of Diamond Model has made great contribution to the study of competitiveness theory. His method of analysis breaks through those of various comparative advantage theories, and provides a new theoretic model of analysis for future researchers. But, Porter's Diamond Model can not be perfect without any blemish. His diamond model has lately been extended by several scholars. Authors like Alan Rugman propose a "double diamond" that takes into account the Canadian backgrounds. Authors... Porter's introduction of Diamond Model has made great contribution to the study of competitiveness theory. His method of analysis breaks through those of various comparative advantage theories, and provides a new theoretic model of analysis for future researchers. But, Porter's Diamond Model can not be perfect without any blemish. His diamond model has lately been extended by several scholars. Authors like Alan Rugman propose a "double diamond" that takes into account the Canadian backgrounds. Authors like Moon further develops it into a Generalized Double Diamond Approach to be fitful for the small countries. Cho et al take South Korea as an example and establish a Nine ?Factor Model. What is the economic analysis of China's international competitiveness? The author of this paper offers some sugges-tions, (see p. 2) 波特的“钻石模型”的提出为竞争力理论的研究作出了突出贡献,他的分析方法突破了各种比较优势理论的分析方法,为后来的研究工作提供了新的理论分析范式。然而,波特模型并非完美无缺的,针对其缺陷,鲁格曼等人将“钻石模型”拓展为适合加拿大分析的“双重钻石模型”;蒙等人又进一步将“双重钻石模型”拓展为适合于所有小国经济分析的“一般化的双重钻石模型”;乔又以韩国为例构建了“九要素模型”。本文还就如何构建我国国际竞争力的经济分析范式提出一些设想。 This paper introduces Porter's Diamond Model and discusses the evolvement and application of various theories on the basis of Porter's Diamond Model.Additionally,this paper analyzes the approach and characteristic of evolvement of Wayne R.Cartwright's Multiple Linked Diamond Model,Dunning's International Double Diamond Model,Rugman's and D'Cruz's Double Diamond Model and Moon's Generalized Double Diamond approach.Finally,some suggestions to enhance China's international... This paper introduces Porter's Diamond Model and discusses the evolvement and application of various theories on the basis of Porter's Diamond Model.Additionally,this paper analyzes the approach and characteristic of evolvement of Wayne R.Cartwright's Multiple Linked Diamond Model,Dunning's International Double Diamond Model,Rugman's and D'Cruz's Double Diamond Model and Moon's Generalized Double Diamond approach.Finally,some suggestions to enhance China's international competitiveness are given according to the Diamond Model. 文章简述了波特的钻石理论,重点对WayneR.Cartwright的多因素钻石模型、Dunning的国际化钻石模型、RugmanandD'Cruz的双钻石模型、Moon,H.C.,Rugman,A.M.&Verbeke,A.的综合双钻石模型(Thegeneralizeddoublediamondapproach等钻石理论的演变模型进行了论述,并分析了波特模型演进路径及其特点,同时就如何提高我国竞争力水平提出了对策和建议。
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