期刊文献+
共找到3篇文章
< 1 >
每页显示 20 50 100
混合模介质加载圆锥喇叭的传播和辐射特性 被引量:5
1
作者 杜彪 林金才 钟顺时 《电波科学学报》 EI CSCD 1995年第1期39-46,共8页
本文利用圆柱波导模型导出了混合模介质加载圆锥喇叭的特征方程和平衡混合条件公式,并给出了其口径场和远区辐射场公式。应用所导出的公式分析了该喇叭的传播和辐射特性,给出了一些有意义的设计曲线。分析结果表明该喇叭可以支持HE... 本文利用圆柱波导模型导出了混合模介质加载圆锥喇叭的特征方程和平衡混合条件公式,并给出了其口径场和远区辐射场公式。应用所导出的公式分析了该喇叭的传播和辐射特性,给出了一些有意义的设计曲线。分析结果表明该喇叭可以支持HE‖平衡混合模,并能在一个很宽的频带内产生轴对称的辐射方向图、低交叉极化和低旁瓣等优良性能。因此,混合模介质加载圆锥喇叭在性能上可以与波纹喇叭相比美,特别是在毫米波频段,它更显示了结构简单。 展开更多
关键词 混合模介质 圆锥喇叭 传播 辐射 馈源
下载PDF
A Comprehensive Mixed Media Model for Boosting Automobile Dealer Visits
2
作者 Motoi Ogura Takayuki Hachiya Kakuro Amasaka 《Chinese Business Review》 2013年第3期195-203,共9页
This paper validates the effectiveness of a comprehensive mixed media model for effective advertising designed to bring customers into auto dealerships by use of their AIDA (attention, interest, desire, action) mode... This paper validates the effectiveness of a comprehensive mixed media model for effective advertising designed to bring customers into auto dealerships by use of their AIDA (attention, interest, desire, action) model and statistical science to quantitatively assess the effectiveness of various advertising methods using television, newspapers, flyers, direct mail, public transportation, and the internet. This model is applied to a dealership representing a well-known automaker, where its effectiveness is verified. 展开更多
关键词 AIDA model Comprehensive Mixed Media Model (CMMM) automobile advertising
下载PDF
Modeling crack in viscoelastic media using the extended finite element method 被引量:2
3
作者 YU TianTang REN QingWen 《Science China(Technological Sciences)》 SCIE EI CAS 2011年第6期1599-1606,共8页
In this paper,the problem of modeling crack in 2D viscoelastic media is studied using the extended finite element method.The paper focuses on the definition of enrichment functions suitable for cracks assessment in vi... In this paper,the problem of modeling crack in 2D viscoelastic media is studied using the extended finite element method.The paper focuses on the definition of enrichment functions suitable for cracks assessment in viscoelastic media and the generalized domain integrals used in the determination of crack tip parameters.The opening mode and mixed mode solutions of crack tip fracture problems in viscoelastic media are also undertaken.The results obtained by the proposed method show good agreement with the analytical methods and provide reasonable background information to enhance the modeling of crack growth in viscoelastic media. 展开更多
关键词 viscoelastic media extended finite element method CRACK crack tip parameters
原文传递
上一页 1 下一页 到第
使用帮助 返回顶部