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A high accuracy finite volume element method was given based on cubic spline interpolation for linear and nonlinear twopoint boundary value problems of ordinary differential equations. The computational scheme was derived and the property of positive type was discussed. Further we presented the convergence analysis and the scheme was proved having fourth order error estimate in discrete energy norm.

针对常微分方程线性和非线性两点边值问题，提出了基于三次样条插值的高精度有限体积元方法，给出了具体计算格式，讨论了格式所具有的优良性质--正型性，并应用能量方法给出了收敛性分析，证明了格式按照离散能量模具有四阶精度。

From finite difference equation of unsteady-state heat conduction ,according to vonNeumann method about scheme stability,the explicit scheme stability condition of two dimension computational heat conduction was given.

从非稳态导热的离散方程出发，根据VonNeumann的格式稳定性判别方法，给出二维导热数值计算显式格式的稳定性条件。

It not only derives truncation error of the difference scheme, but also proves absolute stability of the differecce scheme by the energy estimate method.

不 仅导出了差分格式的截断误差，而且还应用能量估计法，详细论证了差分格式的绝对稳定性。

In the PFD, both the differentials and non-differential terms in the differential equation are discretized, and the coefficients of the power series are determined by means of eliminating the truncation error of the corresponding modified scheme, then the high accurate difference scheme is obtained.

摄动有限差分方法在微分方程的差分近似中，离散微商项的同时，也离散非微商项，把非微商项摄动展开成网格步长△x的幂级数，并通过提高差分格式相应修正微分方程误差阶的方法求出摄动幂级数系数，从而获得高精度差分格式。

In the procedure of computing impedance matrix elements, an improved method of accurate evaluation of retarded time integrals with singularity in self-impedance elements in MOT scheme is presented, which improve the late-time stability of MOT scheme.

在阻抗矩阵元素计算中，研究了一种基于Duffy变换的包含时间迟滞项的奇异积分的精确计算方法，提高了计算精度，改善了MOT求解积分方程中的晚时不稳定性。

InWürth's scheme, it is stays identical with the main axis, whereas inEvert's scheme, it is excentric from the common axis and rotates aroundit with an angular speed depending from the cogs'ratios.

在沃思的计划，这是保持一致的主轴，而在埃弗特的计划，这是偏心的共同轴和它周围旋转的角速度而从螺丝钉'的比率。

To solve those problems,a improved scheme is proposed using Diffie-Hellman key exchange algorithm,the new scheme not only can conquer the security problem of the orig...

利用Diffie-Hellman密钥交换算法对原方案进行了修改，修改后的方案克服了原方案存在的安全漏洞，保留了原方案的所有安全特性，具有更高的安全性，并且降低了计算量。

To each scheme of DG's site and size generated by genetic algorithm, this paper considers the effect of DG on power flow and line loading ability of distribution network. After processing distribution network expansion planning using branch exchange based simulated annealing algorithm, every result of integrated DG and network scheme is judged by economic evaluation.

对于遗传过程中每个分布式电源位置和容量方案个体，考虑了分布式电源对配电网潮流和线路负载能力的影响，运用基于支路交换的模拟退火算法规划扩展网络，对分布式电源和网络的综合规划结果进行经济性评估以衡量个体方案的优劣。

These methods will be studied separately with the Euler implicit difference scheme and the Euler explicit difference scheme.

第一种方法是两层有限元Galerkin方法，第二种方法是修正有限元Galerkin方法，对这几种算法我们分别在欧拉显式差分格式和欧拉隐式差分格式下进行讨论研究。

For the American put option and binary option which do not have analytical solution, we propose algorithms based on explicit scheme and implicit difference scheme and then

对不存在解析解的美式看跌期权和两值期权分别给出了显式、隐式差分算法，并对格式的相容性、稳定性、收敛性进行了分析。数值实验结果表明这种方法是有效而实用的。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。