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临床荟萃 2000年第4期15卷 177-178页

作者：葛向华王法印周俊卿白求恩国际和平医院传染科

庚型肝炎病毒(HGV)是新近发现的一种肝炎相关病毒,有人认为其可能是非甲-戊型肝炎的致病因子,但关于其与肝损害的关系尚未明确,为探讨HGV与肝炎的关系,我们对非a-e型肝炎患者,进行了血清HGV-RNA的检测,报道如下.

关键词：急性肝炎血清慢性化 HGV-RNA a-e 肝炎患者戊型肝炎戊肝病毒性肝炎

自然拼读读音规则教学在小学中年级段的应用——以《丽声瑞格叔叔自然拼读法3》中“a-e”一课为例

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英语学习 2017年第S1期 58-60页

作者：辛小沛山东省青岛市城阳区第二实验小学

在自然拼读教学法中,读音规则的教学具有举足轻重的地位。读音规则具有广泛的迁移价值,掌握了读音规则,学生就能举一反三,增强单词拼读、拼写能力,为课文朗读和自由阅读做好了准备。长期以来,读音规则教学存在着如下两个弊端:一是不重... 详细信息

在自然拼读教学法中,读音规则的教学具有举足轻重的地位。读音规则具有广泛的迁移价值,掌握了读音规则,学生就能举一反三,增强单词拼读、拼写能力,为课文朗读和自由阅读做好了准备。长期以来,读音规则教学存在着如下两个弊端:一是不重视甚至忽视。即使有所教学,也是在死记硬背大量单词的基础上才开始总结概括。

关键词：自然拼读法发音规则小学中年级绘本故事 a-e 读音规则发音规律听音能写韵律诗

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Computational properties of a new horizontal staggered grid

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Science China earth Sciences 2005年第9期48卷 1559-1568页

作者： LIU YudiState Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China Institute of Meteorology, PLA University of Science and Technology, Nanjing 211101, China State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics Institute of Atmospheric Ph Chinese Academy of Sciences Beijing China Institute of Meteorology PLA University of Science and Technology Nanjing China

This paper presents a new horizontal staggered grid (Le grid), which defines h at a gridpoint, and both u and v at the same mid-gridpoint along the x and y directions. A general method is used to deduce the dispersion relationships of describing inertia gravity waves on Le grid and Arakawa A―e grids, which are then compared with the analytical solution (AS) in re- solved or under-resolved cases, using two-order central difference or four-order compact differ- ence scheme from the frequency and group velocity. Results show that in both resolved and under-resolved cases, no matter whether two-order central difference or four-order compact dif- ference scheme is used, the frequency and group velocity discrete errors on Le grid in describing inertia gravity waves are smaller than those of Arakawa A―e grids. At the same time, it is only on Le or Arakawa grid C that the employment of a compact difference scheme of higher difference precision can improve their accuracy in describing inertia gravity waves. However, as for the other four grids (Arakawa A,B,D and e), when the difference precision increases, the accuracy of simulating inertia gravity waves decreases.

关键词： horizontal staggered grid, inertia gravity wave, Le grid, Arakawa a-e grid, compact difference scheme, central difference.

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Shift sampling theory of Fourier transform computation

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Science China(Technological Sciences) 1997年第1期40卷 21-27页

作者：柴玉璞 Bureau of Geophysical Prospecting China Oil Corporation Gucheng 072659 China

The DFT transform us extended to DFTξη transform and the relationship between FT and DFTξη is given by the Fourier transform discretization theorem. Based on the theorem, the DFTξη algorithm-error equation (DFTξη a-e equation) is established, and the minimization property of discrete effect and the oscillation property of truncation effect are demonstrated. All these construct the shift sampling theory——a new theory about Fourier transform computation.

关键词： Fourier transform shift sampling theory DFTξη a-e equation discrete effect minimization truncation effect oscillation.

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