离散化

In order to solve the composite inversion problem of the flexible arm structure, an improved identification method is proposed by combining the relaxation method with the modified total compensation method.

为了解决悬臂型桥墩结构在输入信息未知条件下的物理参数识别问题，采用将松弛法与改进的全量补偿算法结合起来的算法，通过对参数的离散化，对输入未知条件下的－悬臂型桥墩结构的多个物理参数进行了识别。

Based on the proof of Fayyad and Irani, in this paper the improved approaches for discretization and the penalty term of continuous-valued attributes of C4.5 algorithm were extended.

基于Fayyad和Irani的证明，对C4.5算法在连续值属性离散化和连续值属性惩罚项等方面进行了改进。

Each step of the iteration is to solve a linear semi-infinite programming that is transformed into a linear programming by frequency discretization.

每步迭代都是求解一个线性半无穷规划，通过离散化处理线性半无穷规划可以转化为线性规划来求解。

This paper improves the design of lattice gas wave model, points out and corrects the mistakes in PLS model. The realization of wave field simulation for complex geological model by lattice solid automata makes the numerical appproach practicable.

与以往的工作相比较，本文发展了现有的格子气波动建模研究，实现了用格子气自动机对实际复杂地质模型中波场的数值模拟，使这种基于离散化波场描述的波场模拟方法实用化。

This discrete Hamiltonian can be used by the lattice Green's function method to study transport properties in low-dimensional conductors.

这里得到的离散化哈密顿量可以进一步用晶格格林函数方法对低维导体的输运性质进行定量的数值计算。

Especially,occurrence of Lie group method s associated with wants of the dynamics,it can be used to discretion of the equations in spaces of curvature,and it cann t have the drift off the manifold of solution.

特别是所谓的的李群方法是在动力学问题的需求下诞生的，它能在弯曲的空间中进行离散化，根本不会出现'违约问题'。

For the original infinite dimensional problem, if the inexact quasi-newton method with Broyden updating can not converge quickly , for example, it can not attain super linear convergence rate , then when the discretization is becoming finer and finer , we can not get fast convergence rate for the corresponding finite dimensional problem.

对于原来的无限维问题，如果使用不精确Broyden方法不能得到较快的收敛速度，比如超线性收敛性，那么当离散化逐渐加细的时候，对于所得的有限维问题使用不精确Broyden方法也不可能得到较快的收敛速度，所以有必要在无穷维空间上对收敛性问题加以分析，从而为不精确拟牛顿法结合投影法求解算子方程做好准备。

Chapter two gives mathematical methods of controlled objects: state space method,dispersing method of dynamic equation about controlled objects, and solution and propertiesof linear difference equation.

第二章：介绍了受控对象的数学描述方法状态空间法、受控对象动态方程的离散化方法、线性差分方程的解及其性质。

The neural networks correction method combining the local map with radial based function networks and the global map with linear transform was applied to calculate the deformation resistance of the strip and the friction coefficient in the rolling deforming region.

采用径向基函数的局部映射和全局线性映射相结合的神经网络校正模型求解带钢变形抗力和轧制变形区的摩擦因数；并采用轧制变形区离散化方法分析轧制变形区内张力、摩擦力及金属变形抗力等在带钢轧制方向上的分布规律，从而建立轧制力在线计算数学模型。

However, if the evaluation length is too short, the structure function logarithmic value of surface profile is scattering.

评定长度也基本上不影响分形维数的大小，但是当评定长度过小时，轮廓曲线的结构函数双对数坐标图会出现离散化现象。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。