查询词典 descent method

Based on NewGA, the thesis proposes a multigroup parallel genetic algorithm with simulated annealing method , then combines MPGASA with BPNN. According to whether simulated anealing method is used or not, two parallel genetic neural networks are implemented respectively. Results show that PGANN_SA is superior to PGANN and NewGANN.

在NewGA的基础上首次提出一种基于模拟退火机制的多种群并行遗传算法MPGASA，将MPGASA与神经网络相结合，按照是否采用模拟退火机制接受新个体分别实现了两种并行遗传神经网络PGANN_SA和PGANN，计算结果表明采用模拟退火机制有利于改善遗传神经网络的性能。

A new flux expansion nodal method was developed to solve three-dimensional multigroup neutron diffusion equations in hexagonal-z geometry. The method expands the intranodal homogeneous flux distributions in analytic basis functions for each energy group.

提出了一种在三维六角形几何节块内数值求解多群中子扩散方程的节块法，该方法把节块内各群中子通量分布用解析基函数近似展开。

The work out develops 2 dimension multigroup method of vertical mark of section piece disperse (section piece spreads out NSNM of NDOM) module program and three-dimensional multigroup method module program, develop the module program HANWIND; that SN means sets inside section piece for fundamental work out with this among them, NSNM begs the functional module that solves two dimension problem for HANWIND.

编制开发二维多群节块离散纵标方法模块程序NSNM和三维多群节块展开方法模块程序MGNEM，并以此为基础编制开发节块内嵌SN方法的模块程序HANWIND；其中，NSNM为HANWIND求解两维新问题的功能模块。

Application of multilinear data analysis to the study of dynamics (Chapter 3– Chapter 4):In Chapter 3 it provided a novel method to determine carbaryl and 1-naphthol in river water and tap water and used this method to investigate the hydrolysis of carbaryl.

多线性数据分析在动力学研究方面的应用第三章应用三线性平行因子分析方法直接检测了河水和自来水中西维因及其降解产物1-萘酚的含量，并应用此方法研究西维因在河水和自来水中的降解过程，得到了满意的结果。

Some important applications of structure matrix in the tensor product multilinear mapping are given. Compared with the method of matrix algebra knowledge, the proposed method enjoys obvious advantages.

给出了结构矩阵在解决张量积多重线性映射问题时的一些重要应用，经过与用矩阵代数知识解决此问题相比较对照，更显示出用结构矩阵解决问题的优越性。

In the method of the invention, a baseband signal is pre-processed to realize nonlinearity compensation. The pre-processing method comprises the following steps: the filter coefficient and the multinomial coefficient of the high power amplifier are extracted; corresponding gain is calculated for the amplitude value of each point input into the sequence of the baseband signal, and the phase compensation value is calculated according to the amplitude gain; the phase compensation value and the gain which are corresponding to each point are synthesized into re-gain, a pre-processing value pi is obtained, and pre-processing output sequence is formed; the pre-processing output sequence is output into the high power amplifier directly or through a inverse filter.

本发明方法是将基带信号进行预处理来实现抵偿非线性，预处理方法是：提取出高功率放大器的滤波器系数和多项式系数；对输入基带信号序列中的每一点的幅值计算对应的增益，根据幅度增益计算出相位补偿值；每一个点对应的相位补偿值与增益合成复增益，得到预处理值p i ，构成了预处理输出序列；将预处理输出序列直接或经过反向滤波器后输出到高功率放大器中。

This paper leads into the multinomial distribution concept and discusses the content in the following four aspects in details: First, defining the random vector is NA's, drawing out the nature of NA's for the multinomial distribution and proving the multinomial distribution is NA's; Then, introducing the way to own maximum values by three distributions, giving the method to gain the maximum value from general multinomial distribution, which is named the method of elimination.

本文引入了多项分布概念，同时详细讨论了以下四个方面的内容：1。定义了随机向量是NA的，并由此引出多项分布的NA性，并且证明了多项分布是NA的；2。介绍了三项分布最大值的求法，在此基础上给出了一般多项分布最大值的求法，即淘汰法。

Based on this, a combined method of simulation is dedicated as a basic tool for the probability analysis of Runyang bridge. The combined simulation method transfers the original complex question of probability analysis into the solution of a series of multinomial, making the efficiency improved significantly so that the precision of analysis is also increased greatly.

联合算法的应用，将大跨桥梁可靠度分析这样一个具有复杂物理意义的问题转化为一系列失效方程式的求解问题，提高了求解的效率，而求解效率的提高同时也保证了分析的精度。

We use the filtered variables to build Ridge estimation equation, and calculate the multiple correlation coefficient, at the same time passed the correlation test of the Ridge estimation equation; we built forward neural network model based on SCG method and momentum method under the MATLAB 6.5 situation, when estimating the fuel load of the sampled plots, the average precision of the artificial neural network model is 89.51%.

利用筛选出的自变量构建岭估计方程，并通过了岭估计方程的相关检验；在MATLAB6.5环境下构建基于SCG法和动量法的前向神经网络模型，在对所设置实验样地可燃物估测中人工神经网络模型估测的平均精度为89.5%。

This study proposed a new method for extracting multiple cropping index on pixel level with multi-temporal moderate-resolution imaging spectroradiometer enhanced vegetation index data based on the crop phenology and decision tree. The method could be divided into two steps.

该文通过深入分析农作物的农时历和耕地的时间序列植被指数曲线的对应关系，提取了反映作物种植模式的特征时相，并以特征时相的EVI值作为特征参量，构建了提取耕地复种指数的决策树方法。

Nowadays, most of research are to build a transmutative Petri Nets through adding controlling place sets, controlling arc sets and controlling policy to the basic Petri Nets, while the Controlled Petri Nets could be used to argue many controlling theory problems conveniently and to induce many logically and physically supervisory and solve the Event Feedback Controlling Problems and State Feedback Controlling Problem in DEDS supervisory theory.

目前大多数的研究表现为在变形后的受控Petri网基础上，利用各种方法求得各种逻辑型、结构型控制器，解决DEDS监控理论中的事件反馈控制问题与状态反馈控制问题。

On one hand, there are discussions with the works council and union about extension of short time working up to the end of September.

一方面，有讨论，工程理事会和联盟关于延长工作时间短至9月底。