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In section 3 and section 4, We obtain other Kirkman frames by giving weights to some types of GDDs with block size at least 4. Finally, through using recursive and"filling hole"constructions, we give a complete solution to the embedding problem of resolvable minimum coverings of pairs by triples.
在第三节与第四节中,我们利用已知的特别有用的一些Kirkman frames、再利用已知存在的区组长至少为4的可分组设计通过加权后构造出另一系列Kirkman frames,最后通过递归和填洞构造法,解决了λ=1时可分解最小覆盖三元系的嵌入问题。
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The Samara Sutradhara is a scientific treatise dealing with every possible angle of air travel in a Vimana. There are 230 stanzas dealing with the construction, take-off, cruising for thousand of miles, normal and forced landings, and even possible collisions with birds. In 1875, the Vaimanika Sastra, a fourth century B.C. text written by Bharadvajy the Wise, using even older texts as his source, was rediscovered in a temple in India.
Samara Sutradhara是一篇涉及用维曼拿空中旅行的每一种可能,有230节是有关构造,起飞,巡航一千里,普通和紧急降落,甚至可能碰到鸟类。1875年,一本由智者巴拉瓦杰在公元前四世纪写的《维曼尼卡萨塔》,甚至在他的内容里面引用更古老的资料,在印度一座庙宇里重新被发现。
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Insection 4.3, semi-discrete and fully discrete Fourier spectral and pseudo-spectral schemes are constructed. The convergence and stability for the schemes are proved, and the error estimates are obtained.Chapter 5, consider the damped coupled generalized nonlinear wave equations. In section 5.2, by coupled a priori estimates and Galerkin method, prove the existence and uniqueness of the global smooth solution for the periodic initial value problem and obtain the existence of global attractors.
第四章,考虑一类具耗散的广义KdV方程组的周期初值问题,在第二节中证明了整体光滑解的存在性和唯一性,得到整体吸引子;在第三节中构造了半离散和全离散的Fourier谱格式和拟谱格式,在整体光滑解存在的条件下,证明了这些格式解的收敛性,并得到了误差估计。
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In the fifth chapter,we study dipolarizations in some quadratic Lie algebras.Inthe first section,we obtain some results on the classification of dipolarizations in gen-eral quadratic Lie algebras,and prove that there exist dipolarizations in the solvablequadratic Lie algebras whose Cartan subalgebras consist of semisimple elements.
第五章讨论了某些二次李代数的双极化,在第一节中,我们给出了二次李代数的双极化的一些分类结果;特别证明Cartan子代数是由半单元组成的二次李代数上存在双极化,第二节确定了四维扩张Heisenberg代数的所有双极化,在第三节中,我们构造了2n+2维扩张Heisenberg代数的六类双极化,我们发现两个不同于半单李代数情形的有趣事实:(1)在扩张Heisenberg代数上同时存在对称和非对称双极化;(2)对应于扩张Heisenberg代数的双极化的特征元有的是半单的有的是幂零的。
- 更多网络解释与四节构造相关的网络解释 [注:此内容来源于网络,仅供参考]
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ganglion cell:节细胞
视网膜的构造分为四层(见图五),主要的神经细胞有杆细胞、锥细胞、双极细胞(bipolar cell)、水平细胞(horizontal cell)、无轴索细胞(amacrine cell)及神经节细胞(ganglion cell).
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Lagrange multiplier:拉格朗日乘数
构造虚拟变量 104第二节 怀特(White)对异方差的修正 123第二节 广义差分最JA-乘法(Generalized Least Squares)的运用 141第四节 杜宾-瓦尔特森(Durbin--Watson)检验 146第五节 拉格朗日乘数(Lagrange Multiplier)自相关(Autoc
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phase microscope:相差显微镜
第一部分 基础微生物实验方法与技术 第一章 显微技术 第一节 常用显微镜的构造 一、普通光学显微镜(general microscope) 二、暗视野显微镜(暗场显微镜)(dark-field microscope) 三、相差显微镜(phase microscope) 四、荧光显微镜(Flurecenee