查询词典 projection gradient method

Chapter 3: Using spectral projected gradient method and a new nonmonotone line search technique, we propose a algorithm for solving the trust region subproblem. Under weak conditions, the global convergence is established.

第三章：利用谱投影梯度方法与一个新的非单调线搜索技术给出了求解信赖域子问题的一个方法，在一般的假设条件下获得了方法的全局收敛性。

Aluminum oxide;Nickel aluminide;Functional gradient composite material;Oxidation resistance;Hydrothermal method;Hydrothermal anodic oxidation

中文关键字氧化铝；镍铝介金属；功能梯度复合材料；抗氧化性；水热法；水热阳极氧化法

By using antimonate potassium cytochemistry method, we found that antimonate calcium precipitates existed only in the cell wall rather than the protoplasm and showed a tip to base gradient in the cell wall of hyphal tips, i.

焦锑酸钾电镜细胞化学定位揭示焦锑酸钙沉淀颗粒仅存在菌丝细胞壁中，呈顶端到基部的极性分布。

The stabilized biconjugate gradient and fast Fourier transform method is deployed to analyze the transient EM characterization of the objects embedded in a half-space and a three-layer background.

应用稳定的双共轭梯度－快速傅立叶变换方法，分析了两媒质半空间和三分层媒质中浅层埋入体的脉冲电磁散射。

The method is based on the fact that the poststack zero-offset seismic section in a local time window is consisted of some linear events. Using the sparseness discrete τ-p transform and prediction biconjugate gradient algorithm to extrapolate makes the empty traces in the space coordinate reconstruction.

该方法根据叠后零偏移距剖面，在局部时窗内可以看作是一系列线性同相轴的组合，使用稀疏离散τ-p和预条件双共轭梯度算法进行地震道外推，使空间方向的缺失道得到恢复。

The obtained results a re compared with analytic solution and those from integral equation and other me ans. It is shown that the staggered grid finite difference method combined with the Biconjugate gradient iterative solver processed with divergence correction and incomplete Cholesky decomposition procedures can efficiently improve the three dimensional electromagnetic calculation with high accuracy and stability.

经与解析方法、积分方程等其他方法的计算结果对比表明，交错网格有限差分法结合散度校正和不完全乔累斯基分解预处理的双共轭梯度迭代方法进行正演计算，速度快、精度高、结果稳定，能适应三维复杂介质的数值模拟，为三维电磁反演奠定了基础。

Through the experiment, carries on the appraisal with the different digital image quality evaluation method to the digital mapping cameral image quality, obtain some image quality situation like uniformity gradient、entropy、 MTF and so on under the different appraisal target Through this topic research I have a system understanding to the quality evaluation of digital mapping cameral image .

通过实验，用不同的数码影像质量评价方法对数码航摄影像质量进行评价，获得在像元均匀梯度、信息熵、MTF等不同评价指标下的影像质量情况。通过本课题的研究使我对数码航摄仪影像质量评价有一个系统的了解。

Through the experiment, carries on the appraisal with the different digital image quality evaluation method to the digital mapping cameral image quality, obtain some image quality situation like uniformity gradient、entropy、 MTF and so on under the different appraisal target Through this topic research I have a system understanding to the quality evaluation of digital mapping cameral image .

通过实验，用不同的数码影像质量评价方法对数码航摄影像质量进行评价，获得在像元均匀梯度、信息熵、MTF等不同评价指标下的影像质量情况。通过本课题的研究使我对数码航摄仪影像质量评价有一个系统的了解。：数码航摄仪，数字影像，质量评价

Methods Density gradient centrifugalization combined with adherence method were used to segregate and cultivate rat MSCs. MSCs cultivated to the 3 rd passage were characterized using flow cytometry technique. TGF-β1 with 1, 2 and 5 μg/L were pretreated on MSCs for 8 h, then serum and oxygen deprivation were used to cause analogous ischemia of MSCs in vitro. AnnexinV/PI flow cytometry technique was used to evaluate apoptosis and survival of MSCs.

采用密度梯度离心结合贴壁法分离、培养大鼠MSCs，对培养第3代的MSCs进行鉴定；用1、2、5μg/L的TGF-β1分别预处理细胞8 h，然后用血清剥夺和低氧处理建立MSCs体外模拟缺血性损伤模型，通过流式细胞术评价MSCs的凋亡及存活情况；用Western blot方法检测2μg/L的TGF-β1对Akt和p-Akt表达的影响。

Applying the conjugate gradient method, an iterative algorithm is presented to solve the constrained matrix equation AXB+CXD=F over centrosymmetric matrix X and its optimal approximation.

应用共轭梯度思想，给出了求解约束矩阵方程AXB+CXD=F的中心对称解及其最佳逼近的迭代算法。

Researches reveal that students who suffer from corporal punishment tend to resort to violence in their future life.

研究表明遭受过肉体惩罚的孩子倾向于在他们今后的人生中使用暴力。

Total sugar of sarcocarp and chlorophyll of pericarp increased firstly, and then decreased afterward along with altitude; Titratable acidity, ascorbicacid and anthocyanin of pericarp were increased along with altitude; The content of protein increased firstly and decreased afterward along with altitude; Carotenoid of pericarp were decreased along with altitude.

果肉总糖和果皮叶绿素含量随海拔高度升高先升高后降低；可滴定酸、维生素C和果皮花青苷含量均随海拔升高而升高；蛋白质在1720m处最大，1420m处最小；果皮类胡萝卜素随海拔升高而降低。