查询词典 approximation method

Secondly, method of Taylor series is used to approximate the slow manifold and the O approximation of the slow manifold is given; slow dynamics such as saddle node bifurcation which has been proven to be the same as that for the full system is analyzed; at the same time, fast dynamics including bifurcation conditions and domain of attractor of the stable equilibrium are also analyzed; the attracting region which consists of the stable manifold of the unstable equilibrium and stable equilibrium is given; we found that when the inner flux decay increases, the domain of attractor is enlarged.

首先，给出了电力系统SMIB模型的时间尺度分解，得到标准的奇异摄动模型；其次，利用幂级数方法，给出了慢流形的O近似M〓，分析了在慢流形M〓上的慢动态，得到了慢子系统的鞍结分支值，并证明此分支值与原系统的鞍结分支值相同；分析了快子系统的平衡点和全局分支的存在条件，给出由不稳定平衡点的稳定流形与稳定平衡点形成的吸引域；并研究内部电压对稳定域的影响，发现稳定域随内部电压增加而扩大；最后给出整个系统的稳定平衡点的近似吸引域。

On the basis of the principle of the least-squares approximation and steepest descent method and the average of the given discrete points, the space linear fitting can obtained, at the same time through a test proved the algorithm is correct.

其中空间直线拟合根据最佳平方逼近原理和最速下降法以及所给离散点的均值求得，并通过试验验证了此算法运算结果的正确性。

Then, the stochastic approximation method is applied to determine the optimal control parameters.

应用扰动分析法得到性能指标对控制参数的灵敏度估计，并证明了估计的无偏性，又利用随机逼近技术优化控制参数。

Detection and control of eccentricity in a cold mill based on stochastic approximation method

性质：又称大小头。化工管件之一，用于两种不同管径的联接。

The problem of pricing American options using the quadratic approximation method with stochastic volatility and jumps is considered in the second part of the thesis.

而论文的第二个部分是研究随机波动模型如何扩展到美式选择权上的应用，考虑在可能提早履约的情境下，标的物之随机波动性与代表突发冲击事件之跳跃模式，如何来影响提早履约溢酬的问题。

According to stochastic approximation theory, when deterministic continuous time method is used to analyze convergence of MCA learning algorithms, the learning rate is required to approach to zero.

具有固定学习速度的MCA学习算法的收敛性分析根据随机逼近理论，当确定连续时间方法被用于分析MCA学习算法的收敛性时，学习速度被要求趋于零。

Firstly, by use of the successive approximation method and a series of classical estimates, the local existence and uniqueness of weak solution are proved.

利用逐次逼近方法和一系列经典的估计，证明了弱解的局部存在性和惟一性。

Finally, the paper compares chaos algorithm with genetic algorithm and dynamic programming successive approximation in detail and the outcome indicates that the method is simple ,convenient and accurate.

实例计算分析表明，与遗传算法、动态规划逐次逼近法相比，混沌优化算法具有原理简单、计算简便、结果精度高的优点。

Any order approximate solution of the equation was presented, and its convergence was mathematically proved by the successive approximation method.

采用逐次逼近法，求得任意阶近似解，并证明解的收敛性。

This paper presents two techniques, Successive Approximation Procedure and selecting Average Plane based on the existing Taylor's Series method. These two techniques have greatly improved the accuracy of the potential field data analyses.

本文在已有的泰勒级数曲化平方法基础上提出了逐步逼近技术和平均平面技术，使得曲面位场资料处理的精度得到了很大提高。

Many will continue to choose to live in duality and in conflict.

许多人将继续选择活在二元对立性和冲突中。

I find that students of the University of Physical Education all wear sportswear at first sight.

我发现：体育大学的学生乍一看，都是穿运动衣，大家都一样