查询词典 perturbation method

We can control the lower bound of the extended cycle length by choosing the appropriate m-sequences as perturbation sequences.

同时，我们可以通过控制混沌系统输出的m序列的长度来控制混沌序列的最小周期，以产生满足我们需要的混沌序列。

Luzon Strait is the region where the perturbation energy increases and the frontal instability is especially active.

作为西边界的豁口的吕宋海峡是扰动能量增长的区域，尤其是锋面不稳定活跃的区间。

The local perturbation analysis of a class of generalized Sylvester matrix equation is concerned.

研究了一类广义Sylvester矩阵方程的局部扰动分析问题。

Thus an algorithm to solve the vibration second-order Sylvester matrix equation with parameters' perturbation is presented.

提出了求解具有参数不确定的振动二阶Sylvester矩阵方程问题的算法。

The transition matrix analytic solution of perturbation equations which was widely used in inertial guidance engineering are derived.

忽略数学模型的细节所招致的最大误差小于0.1%。在此基础上得到引力异常造成落点偏差的近似解。

Our results are also matched to those in the heavy meson chiral perturbation theory.

同时也考虑了影响B→K〓衰变的一点长距离效应。

In the third chapter, we study the existence, uniqueness, global stability of positive solution and MLEs of parameters of Lotka-Volterra competition system, mutualism system and predator-prey system with random perturbation.

第三章研究了具有随机扰动的Lotka-Volterra型的竞争系统，互惠系统和捕食-被捕食系统正解的的存在性，唯一性，全局渐近稳定性以及参数的极大似然估计。

In the solution process, the basis vectors can be obtained from the matrix perturbation or the Neumann series, and then the Epsilon-algorithm was used to obtain the approximate eigenvectors.

在求解过程中，利用Neumann级数产生基向量，然后用Epsilon算法求出近似特征向量，最后用Rayleigh商分析，求出了修改后结构的近似特征值和特征向量。

The results of numerical experiments, using the four-dimensional variational data assimilation system of the nonhydrostatic mesoscale model MM5, show that: the tangent linear model and adjoint model conducted by keeping the "on-off" switches the same as the basic state, can provide a good approximation of the first-order information to the NLM perturbation and a good descent direction for the minimization procedure; switching on and off at every other time step in the Kuo cumulus parameterization scheme don"t impact the convergence rate of cost function; the existence of the switches don"t impact improvement to the MM5 model rainfall prediction because that not only specific humidity ,but also wind, temperature and pressure are assimilated into the model.

非静力中尺度数值模式MM5的四维变分资料同化系统进行的数值试验结果表明："开关"变量保持与基态一致，所构造的切向线性模式能够提供关于非线性模式扰动的一阶近似，伴随模式所计算的梯度值能够为最小化过程提供较好的下降方向；郭氏降水参数化方案中对流每隔一个积分步的交替发生并不影响目标函数最小化的收敛速度；"开关"变量的存在也不影响将风、温度、气压和比湿结合起来同化对MM5降水预报准确性的提高。

One of them is suitable for systems without perturbation and the other two are suitable for systems under two kinds of perturbations, vanishing and nonvanishing, respectively.

一个判据适合系统没有摄动情况，其他两个则分别适用於系统存在归零及非归零摄动情形。

Panorama Many people are dancing in a large sitting room.

在一个大客厅里，许多人在跳舞。

We fully understand how a microwave oven cooks food, it is first necessary to talk ...

我们充分理解一个微波炉煮的食物，这是首先要谈。。。