volume integral

Three methods-structural volume, binomial formula and definite integral-can be employed to derive the formula for the snm of the K power of positive N term integer. The calculation can be made on the basis of them.

用构造体积、应用二项式定理、利用定积分的三种方法，导出正整数前n项k方和公式，并对此进行推算。

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the method requires less computation time and smaller memory than the direct computation of volume integral equations, since the large scale matrix inversion may be avoided.

由于不必进行直接的大型矩阵求逆运算，因而与体积分方程的直接解法相比，所需的机时更少，并减少了对内存的要求。

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3D Electromagnetic Inversion by Volume Integral Equation Method Based on Current Dipole Source

基于电偶源的体积分方程法三维电磁反演

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a surface integral equation is derived for solving dielectric scattering problems. it avoids the internal resonance phenomenon, and smaller dimensions of the impedance matrix are obtained by comparison with the volume integral equation.

推导一种用于求解介质体散射问题的面积分方程，它克服了内谐振现象，且同体积分方程相比，获得了更小的阻抗矩阵维数。

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In this paper we discuss the application of parabola integral formula in stereoscopic volume, and get concise formula of volume for prism 、 pyramid 、 prismoid 、 spheroid and spherical sector.

文章讨论了抛物线求积公式在立体体积方面的应用，并由它具体求出了棱台、棱柱、棱锥、球及球缺的体积公式。

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volume integral number to aspartame aminotransferase influence of measurement

体积分数对天门冬氨酸氨基转移酶测定的影响

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the volume integral equations in stratified medium were accurately calculated by weak-form stabilized biconjugate-gradient fast fourier transform ( bcgs-fft) algorithm.

采用弱化稳定型双共轭梯度快速Fourier变换（BCGS-FFT）算法精确计算了层状介质中的体积分方程。

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the discrete form of the volume integral equations was solved via the stabilized biconjugate-gradient iteration method, so that the distribution of the electric field within the inhomogeneous objects can be obtained.

离散后的体积分方程采用稳定型双共轭梯度迭代方法进行求解，从而得到异常体内电场的分布。

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Non-oscillatory and non-free-parameters dissipative finite difference scheme with second accuracy was used to solve Navier-Stokes equations coupled with electromagnetism and chemical reaction source terms, and finite control volume integral method was applied to solve electromagnetic equation derived from Maxwell's equations.

采用二阶精度NND格式数值求解耦合电磁源项和化学反应源项的NS方程组，采用有限控制容积积分方法求解由麦克斯韦方程组推导出的电磁场方程。

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the discrete equation was deduced by control volume integral method, and realized by numerical method.

用控制容积积分法导出了离散方程，并用数值方法进行了求解。

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Finite volume element method based the integral conservation law of partial differential equations the balance equation.

有限体积元法从偏微分方程的积分守恒方程(平衡方程)出发.

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volume integral equation method has been used to calculate forward and inverse problems of 3d electromagnetic fields in homogeneous half-space.

利用体积分方程对电偶源激发时均匀导电半空间频率域三维电磁场进行正反演计算。

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furthermore, the computational complexity of the algorithm is studied for both surface integral equation and volume integral equation. finally, the electromagnetic scattering problem for thin coating or lossy dielectric coating objects is solved by combining the ie-fft algorithm with impedance boundary condition ( ibc).

并考察了该算法针对表面积分方程和体积分方程的计算复杂度。最后，基于阻抗边界条件和积分方程快速傅里叶变换方法，求解了薄涂敷或有耗涂敷导体目标的电磁散射问题。

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dr. lee explained the concept of volume integral optical density.

李博士解释了体积积分光密度的概念。

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