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By using the expansion of spherical wave functions for a cylindrical wave function and with the help of the theory of hypergeometric functions, the Sommerfeld type integral contained in the electromagnetic fields is expressed as a rapidly and absolutely convergent series of spherical wave functions; and the coefficients of the series are the Legender Polynomials with the complex argument for the constitutive parameter.

应用圆柱波函数的球面波展开式和超几何函数理论,场分量中的索末菲尔德型积分被表示成快速、绝对收敛的球面波函数系展开式;展开系数是以物性参数为复宗量的勒让德多项式。

From the theory, the algorithm for determination of the degree of implicit polynomials is followed: detecting the stationary points in the object boundary based on its features, and then calculating the minimum degree according to the formula derived from the theorem. In addition, the theory can be extended to three-dimensional object.

该方法首先由给定物体边界的轮廓检测出其驻点数,然后根据驻点数得到拟合隐含多项式曲线方程次数的下界,进而推广到三维物体的隐含多项式曲面拟合次数的确定。

The model was solved by the Ritz method, and the orthogonal polynomials generated by the Gram-Schmidt process were employed as admissible function for both disk and blades. With this approach, the matrix derived from kinetic energies becomes diagonal and numerical manipulation can become easy and stable.

采用Gram-Schmidt方法生成正交多项式作为李兹容许函数进行模型的离散化,简化了所得到的频率方程求解过程,有利於求解过程的数值稳定性,并可方便地通过对方程系数性质的分析了解结构振动模态的性质。

The quadratic polynomials and Kriging method are employed to construct the response surface separately, Numerical results indicate that the forebody and afterbody designed by us is of simple configuration, not only can it ensure the efficiency of propulsion system, but also have a better aerodynamic performance.

响应近似模型分别采用了二次多项式和kriging方法来构造,结果表明由本文设计的前后体外形结构简单,不仅能确保推进系统的工作效率,而且具有更好的气动性能。

While the standard Airy function, used frequently in the uniform asymptotic formulas for classical orthogonal polynomials, behaves like the exponential function on one side and the trigonometric functions on the other side of an extreme zero,the q-Airy polynomial behaves like the q-Airy function on one side and the q-Theta function on the other side.

在经典正交多项式的一致渐近公式中我们通常要用到Airy函数,这个Airy函数在一个极端零点的一边表现为指数函数,另一边又表现为三角函数。同样地,q-Airy多项式在一边表现为q-Airy函数,另一边又表现为q-Theta函数。

Let H. f and g be real polynomials in x, y of degree n+1, at most n and at most n respectively,△ be a set of h such that the real algebraic curve H =h has a compact component δ, and ω=gdx-fdy be a polynomial 1-form.

设H是n+1次实多项式,f,g为至多n次的实多项式,记△为使实代数曲线H=h有一个紧分支δ的所有h之值的集合,ω=gdx-fdy为多项式1-形式。

The paper applies algebraic geometry, computational geometry, approximation theory to study the following problems: the Nother type theory and the Riemann-Roch type theory of the piecewise algebraic curve; the number of real intersection points of piecewise algebraic curves; the real piecewise algebraic variety and the B-net resultant of polynomials.

本文应用代数几何,计算几何,函数逼近论等学科的基本理论,分别就分片代数曲线的Nother型与Riemann-Roch型定理;分片代数曲线的实交点数;实分片代数簇以及多项式的B-网结式进行研究。

Varma and Bojanov studied Landau's type inequality of algebraic polynomials based on Hermite function.

Varma和Bojanov研究了基于Hermite函数的代数多项式的Landau's型不等式。

The Todd polynomials were first studied in algebraic geometry and it is surprising that they play this fundamental role in classification of manifolds .

托德 多项式第一次被学习在代数几何并且它惊奇他们充当在多头管的分类的这个根本角色。

We posed the concept of sufficient intersection about s(1≤s≤n) algebraic hypersurfaces in n-dimensional space and proved the dimension of polynomial space Pm(which denotes the space of all multivariate polynomials of total degree≤m) on the algebraic manifold S=s(f1,…, fs) where f1(X=0,…, f s=0denote s algebraic hypersurfaces of sufficient intersection, then gave a convenient expression for dimension calculation by using the backw ard difference operator.

给出了n维空间中s(1≤s≤n)个代数超曲面充分相交的概念,证明了n元m次多项式空间Pm在充分相交的代数流形S=s(f1,…, fs)(f1=0,…, fs=0表示s个代数超曲面)上的维数,并利用倒差分算子给出一个方便计算的表达式;构造了沿代数流形上插值适定结点组的叠加插值法;证明了在充分相交的代数流形上任意次插值适定结点组的存在性;给出代数流形上插值适定结点组的性质和判定条件。

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As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸,那乌黑、忧郁的眼睛,她便会相信,他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失

But because of its youthful corporate culture—most people are hustled out of the door in their mid-40s—it had no one to send.

但是因为该公司年轻的企业文化——大多数员工在40来岁的时候都被请出公司——一时间没有好的人选。