有效函数

In the second part, we have considered the polariton system described by the model effective Hamiltonian involving single mode photon field interacting with a transverse optical phonon in a more realistic form. On this basis, we have discussed the dynamical evolution of the wave function , the dynamical variables and the non-classical properties for the system in a analytic form for the first time.

第二部分将极化激元系统约化成模型单模光子—横向声子有效相互作用系统，在此基础上以解析形式首次讨论了系统的波函数、力学量和压缩态、亚泊松分布等非经典效应的动力学演化行为。

In chapter three,we have studied the energy and effective mass ofelectron in a quantum well using Green′s function method.

在第三章中，我们使用格林函数方法研究了量子阱中电子的自能和有效质量。

In chapter four,we have studied the self-energy and effective mass ofelectron in a single heterostructure using Green′s function method.

在第四章中，我们使用格林函数方法研究了异质结中极化子的自能和有效质量。

During the training of the neural network, the influence, which is caused by the various network parameters, on the error function is discussed emphatically and the traditional BP algorithm is improved by importing the weight coefficient βand error function coefficient α.

在神经网络的训练过程中，在快速BP算法的基础上做了一些有效的改进，如：引入权值系数β，选取相应的误差函数系数α等。

The new IRS algorithm has greatly improved the approximation performance of the original reduced set method by embedding a new distance metric called image Euclidean distance into the kernel function.

其中，所谓IRS算法是指在精简集算法的核函数中嵌入一种新的距离度量——图像欧式距离——来改善其迭代近似性能，IRS可以有效地生成新的、位于类别边界附近的虚拟样本以增强给定训练集。

The non-relativistic energies and wave functions were determined by Rayleigh-Ritz method. The relativistic effects, including the correction to kinetic energy, the electron-electron contact term, and the orbit-orbit interaction, Darwin term, and mass-polarization effect on the energies were calculated by using first-order perturbation theory. In order to obtain a more accurate result for the larger Z system, the quantum-electrodynamics correction should be included. This correction to energy can be evaluated for the valence electron by using a hydrogenic formula with an effective nuclear charge, Z. The ionization potential, the excitation energies and the fine structure split-tings for a lithium-like ion with higher nuclear charge (Z=26) were calculated.

非相对论能量用Rayleigh-Ritz变分法确定，包括动能修正、电子—电子接触项、轨道—轨道相互作用项以及Darwin项的相对论修正和质量极化项由全实加关联波函数的一阶微扰给出，量子电动力学修正由有效核电荷方法和类氢公式计算；给出了较高核电荷(Z=26)类锂体系1s^2nl组态的电离能、激发能和1s^2np组态的精细结构劈裂。

In the analysis of structural reliability, response surface method is an efficient method to solve this problem that performance function has no explicit expression.

实际工程可靠度分析中，经常遇到功能函数没有明确表达式的情况，响应面法是求解此类问题的一种有效方法。

In view of trust region algorithm has good global convergence for solving non-linear quadratic programming problem,the effective elastic module s damage factor and the damage distribution function is introduced by FEM updating .

鉴于信赖域算法在求解非线性二次规划问题中具有良好的全局收敛特性，同时结合有限元模型修正技术，引入有效弹性模量损伤因子和损伤分布函数的概念，在Matlab编程环境下调用ANSYS有限元程序中的APDL语言进行桥梁空间结构的有限元建模，利用信赖域算法调整局部单元的参数，通过连续损伤分布插值多项式拟合连续区段各单元的损伤分布曲线，进而实现了对连续梁桥的动力损伤识别。

Y pretreatment on their leaves, the physiological effects of vitamin C, ethanolamine, cysteine, fucose and sodium benzoate were studied through design of randomized block and subordinate function values, and three best performance on improved its drought resistance chemicals were selected.

幼苗为试材，经叶片喷施药剂进行预处理后用PEG-6000溶液模拟水分胁迫，采用随机区组试验和隶属函数法，综合评价了维生素C、乙醇胺、半胱氨酸、苯甲酸钠和岩藻糖五种药剂对水分胁迫下香蕉幼苗叶片的生理影响，从中筛选出对有效提高香蕉抗旱性效应前列的三种药剂。

In this paper, the higher-order statistics calculated from vibration signals of a gearbox are ...

研究表明，高阶统计量和径向基函数神经网络相结合的齿轮故障分类方法是有效的

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了