查询词典 projection gradient method

The alterative direct iterative, strong implicit procedure, preconditioning transpose-free variant of quasi-minimum residual method and biconjugate gradient stabilized method of the Krylov subspace methods were implemented in SIMPLER algorithm to solve the algebraic equations.

将交替方向隐式、强隐及Krylov子空间法中的TFQMR、Bi-CGSTAB方法实施于SIMPLER算法，作为其内迭代求解方法，比较了不同代数方程求解方法的收敛速度，并首次分析了它们对算法健壮性的影响。

The strain gradient, the fiber Bragg grating's reflection and the short wavelength loss decide the two stopbands. Because of having no extra loss result from coupler and no high cost result from circuitor, the band pass filter formed by single chirped fiber grating have many good characters such as little insert loss its insert loss is the fiber splice loss, small volume, low cost and excellent property, moreover there is no report about fabricating filter by using this method, thus we will apply national invent paten about the method of fabrication fiber band pass filter using single chirped fiber grating. According to the parameters linearly chirped fiber gratings of Canada BRAGG Photonics Inc.

由于没有耦合器带来的3dB的额外损耗，也没有环行器带来的高的制作成本，用单支chirped光纤光栅形成可调光纤带通滤波器具有插入损耗极小（插入损耗为光纤与光纤之间的融接损耗）、体积小、制作成本低廉并且性能优良等特点，而且国内外还未见类似制作方法的报道，我们对用单支chirped光纤光栅形成可调光纤带通滤波器这一制作方法正在申请国家发明专利。

Firstly, it concludes the slope Biotechnique, analyzes its specialties and applied situation, put forwards a method that choosing the slope Biotechnique mode from texture gradient the slope corrade expense and so on; Secondly, it investigates that technology of vegetation construction from the selecting seed and the helping grow, put forwards a method that selecting the seed.

首先，将山区公路边坡生态防护方式进行了归纳，分析了主要方式的特点和适用范围，提出从质地、坡度、坡面侵蚀情况、费用等方面进行方式的选择；然后，从物种选择、植物助长方面对植被建植技术进行了研究，提出了简易可行的五步选种方法；接着，分别以黄土地区山区、秦岭山区的边坡生态防护为实例进行了说明；最后，从景观的角度探讨了山区公路边坡生态防护的协调，提出了协调原则和具体要求。

A mixed algorithm is developed to id entify parameters used in air conditioning objects with great lag, nonlinearity and time-variation. The algorithm makes use of the gradient method and the leas t square method.

针对空调对象这一时变迟延环节，提出了一种基于最速下降法和最小二乘法的混合参数辨识算法。

This paper describes the assembly method of the Aeromagnetic Gradiometric System which can be used not only in horizontal (including transverse and longitudinal plane) but also in vertical gradient survey on the Y-5 fixed-wing aircraft with the single engine and the double wings. The method and the results of applying AADCⅡ Automatic Aeromagnetic Digital Compensator are also preliminarily discussed.

介绍了在单阀双翼的运五飞机上安装既可进行垂直梯度测量，又可进行水平梯度测量（包括横向和纵向水平梯度测量）的航磁梯度测量系统的方法，初步探讨应用航空地球物理综合测量系统自动航空磁力数字补偿仪的方法，并对补偿结果进行评价。

To enrich and isolate different function hydrocarbon-degrading bacteria from long-term oil-contaminated environment, crude oil and hexadecane were used as sole carbon sources respectively. On the other hand, bacterium community structures of enrichment were analysed by both plate method and PCR-DGGE (denaturing gradient gel electrophoresis) method.

中文摘要：以原油和正十六烷为唯一碳源，从长期受石油污染的环境中富集和分离具有不同功能的石油烃降解菌，并利用平板法和PCR-DGGE法对不同碳源富集到的菌群结构进行分析。

Through adding new state variable and using supplement functions,the problem with restriction conditions was converted into nonrestriction problem.In addition,the dynamic searching method of optimal step coefficient was developed to modify the conventional gradient method,consequently the calculation problem of the multivariable optimal periodic control was able to be resolved better.

通过增加新的状态变量和用补偿函数法，将本课题的有约束条件问题化为无约束条件问题，并提出了最优步长参数的动态搜索法来修改传统的梯度法，从而较完善地解决了多变量最优周期控制的计算问题。

Using Huber function, the method can alleviate the oversmooth problem at the "motion edge". To get the displacement field, the conjugated gradient method is used to minimize the energy function.

该算法采用共轭梯度法优化能量方程，并利用小波分解进行分级计算，能快速可靠地得到稳定的位移场。

The preconditioned conjugated gradient method is a very efficient iterative method for solving large sparse linear equations.

预处理共轭梯度法是求解大型稀疏线性方程组的极为有效的迭代法。

Based on experiment data, equivalent gray absorption coefficient s at various gas temperature distributions are calculated using inverse analysis,which combines the zone method and the minimization of a performance function stylizing the conjugated gradient method.

以实验数据为基础，采用区域法与求目标函数最小值的共轭梯度法相结合的方法反演计算了不同烟气温度下的当量灰吸收系数。

A strange and mysterious deep sea creature.

一种奇异、神秘的深海生物。

It's a yellow rectangle .

这是黄色的长方形。