查询词典 numerical function

The probability density function of the attacked data is established and a numerical simulation is conducted.

建立了受攻击信号的概率密度函数模型，并进行了数值模拟。

The fourth chapter gives the concrete numerical calculation method of surface Green\'s function and density matrix.

第4章给出了具体的表面格林函数和密度矩阵的数值计算方法。

The numerical method of the Green's function and its derivatives in time domain is discussed and developed.

研究和发展了时域Green函数及梯度的数值计算方法。

In order to avoid the Maratos effect, the merit functions used are approximations to Fletchers differentiable exact penalty function. Global convergence is proved on some conditions, and some numerical results are given .

为避免Maratos效应，此方法采用Fletcher的光滑精确罚函数的逼近形式作为价值函数，在一定条件下证明了算法的全局收敛性并且给出数值结果。

Numerical differentiation is that derivative value of a function at a certain point is approximately solved in discrete method.

中文摘要：数值微分就是用离散方法近似地求出函数在某点的导数值，关于数值微分已有许多求解方法，但这些方法都有各自的局限性，并且关于高阶导数近似逼近的方法研究相对较少。

Our numerical results show that the end-results of the image set of the discontinuous border of the mapping function forms a stochastic web.

类耗散性可能使稳定的混沌轨道转变为"混沌类瞬态"，并最终被椭圆岛（可称为"规则类吸引子"）捕获。

The kinematics parameters were firstly presented by establishing the mechanical model of relation between the vibration screen and particle to deduce periodicity condition of particle motion,then disturbing function of particle motion for periodic motion was educed by using Poincaré mapping method,and studied motion characteristics of particle in vibration screening in terms of numerical analysis.

利用振动筛与颗粒之间关系的运动学模型，导出颗粒运动的周期性条件；然后利用Poincaré映射方法，推导出颗粒的运动对周期运动的扰动方程；最后对振动筛分过程中颗粒运动特性进行了数值计算研究，得出了筛面上颗粒运动是经周期分叉和概周期分叉通向混沌的演化过程。

This article mainly introduces the construction of distributed numerical control system, communication protocols, debug process, and function of DNC communication and managing software .

文章介绍了分布式计算机数控系统通信网络的结构、通信协议、调试步骤以及通信与管理软件的主要功能。

The obtained Green′s function is applied to numerical modeling of electromagnetic wave resistivity MWD instrument, and the influence of the drill collar, the borehole-correction method, the radial characteristics of investigation and the vertical resolution of the tool are analysed.

用上述Green函数对随钻电磁波电阻率测量仪器进行数值模拟，分析了钻铤的影响规律、井眼校正方法、仪器的径向探测特性和垂向分辨率。

The deflection pulse response function in the general Duhamel integration is got by using integral transform and the program of corresponding numerical inverse integral is worked out.

采用积分变换的方法，求得了广义Duhamel积分式中的弯沉脉冲响应函数，并编制了相应的数值积分逆变换程序。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。