查询词典 projection gradient method

RESULTS: BMSCs was pure following density gradient centrifugation and adherence screening method. The third and fifth passage of cells had typical whirlpool-shape. Transmission electron microscope demonstrated that round or oval MSCs possessed large nuclei, big nucleus proportion, a few cellular organ.

结果：①经密度梯度离心法、贴壁筛选法并结合传代方法所得的间充质干细胞很纯，第3代和第5代细胞形态单一，细胞排列具有典型的漩涡状结构。

The method mainly adopts the projected gradient technique. Through calculating the fundus of the null space of matrix A in the constraint, the direction set becomes a positive spanning set of R~.

其中主要是采用投影梯度技术，通过计算约束条件中矩阵A的零空间的基底，使得实施过程中所选用的方向集是R~中的一个正跨越集。

The key idea is that the proposed numerical scheme involves the operator splitting technique, balance tensor diffusivity, Runge-Kutta time-stepping method, and a conjugate gradient iterative solver.

此法最主要的概念是使用一种分离的离散式、数值平衡扩散式、时间前进法及共轭梯度法来求解。

This method prefilters input data by the orthonormal basis functions in order to get some dynamic characteristics. Unfortunately, the gradient algorithm could not be directly used in parameter identification because the prefiltered data do not have time shift characteristic anymore.

该方法通过正交基函数对输入数据进行滤波，使得滤波后的数据蕴涵着系统的部分动态特性，但也使滤波后的数据不再满足时移特性，因而无法直接使用梯度算法对模型参数进行辨识。

This method pre filters input data by the orthonormal basis functions in order to get some dynamic characteristics. Unfortunately, the gradient algorithm could not be directly used in parameter identification because the pre-filtered data do not have time shift characteristic anymore.

该方法通过正交基函数对输入数据进行滤波，使得滤波后的数据蕴涵着系统的部分动态特性，但也使滤波后的数据不再满足时移特性，因而无法直接使用梯度算法对模型参数进行辫识。

Based on overlay and analysis function in GIS, a gradient correction downscaling model in yanr gully is made, which apply an effective method for sealing-up in multi scale.

利用GIS的空间叠置分析功能，对燕儿沟1∶1万/1∶5万的坡度转换图谱进行了初步研究，为不同比例尺之间的尺度转换提供了一种有效的方法。

Firstly, the three-dimension boundary question and its corresponding variation question concerning the point-source electrical field on a 3-D structure are presented. Secondly, the finite element method is used to solve the variational equation. The study area is divided into many tetrahedral elements. Then, we interpolate with a tri-linear function in each element. So, the variational equation is converted into a linear equation system. Finally, taking into account saving of time, we make use of symmetric successive overrelaxation preconditioned conjugate gradient algorithm to solve large linear system, and obtain the potential value of each node, resulting in the calculation of the apparent resistivity values on the ground surface.

首先给出了三维构造中点源电场的边值问题以及相应的变分问题；然后利用有限单元法求解变分问题，采用四面体单元对研究区域进行剖分，在单元中进行三线性函数插值，将变分方程化为线性代数方程组；最后，考虑到节约计算时间，利用对称超松弛预条件共轭梯度迭代算法求解大型线性方程组，得到了各节点的电位值，进而计算出地表的视电阻率。

The parametric optimization model is established on the basis of explicit least square error, and the parameters of digital points are optimized by subspace interior reflective conjugate gradient method.

建立了基于显式的最小二乘重构误差的参数优化模型，运用子空间共轭梯度内部反射牛顿优化技术实现了大规模数据点的参数优化。

A high-performance liquid chromatographic method for the simultaneous separation and determination of aryltetralin lignans and flavonoids in Podophyllum emodi Wall.var. chinesis Sprague was developed. The separation was performed on a Kromasil-C 18 column by gradient elution with phosphate buffer-methanol (0-13min, 50∶50, 33min, 30∶70) as mobile phase at a flow-rate of 0.8 ml/min, with detection 270nm.

首次建立了桃儿七中苦鬼臼葡萄糖甙、4-去甲基鬼臼脂素、表鬼臼脂素、苦鬼臼脂素、苦鬼臼酯酮、鬼臼脂素、鬼臼酯酮、去氧鬼臼脂素、去氢鬼臼脂素等9种木脂素以及山柰酚、槲皮素等2种黄酮类组分同时分离测定的高效液相方法。

A novel three-dimensional localization method is proposed. Firstly, the tomato effective centric spots are obtained from the left multi-sensor fusion image and the right multi-sensor fusion image. Then, being looked as symmetries, image pairs other point to point correspondences are searched from two directions by pixel neighbor area correlation values by using the polar line restraint, the unique restraint and the disparity gradient restraint.

即从双目定位的几何模型出发，在双目匹配搜索中，提取多源传感融合图像的番茄凸壳有效形心点，采用极线约束、唯一性约束进行立体视觉图像的特征点及其邻域灰度相关的双向匹配，利用体视原理获取唯一被测目标的空间坐标。

The role of the environment is very important.

的作用，环境是非常重要的。

At that time, the High Court of England and Wales Court of Queen's Bench president of William Murray, Lord Mansfield in June 22, 1772 ruling:"No matter then there is the inconvenience, but there must be a decision, I can not say that this case under the law in England are permitted or authorized; are so black should be released."

当时的英格兰及威尔士高等法院王座法庭院长William Murray， Lord Mansfield于1772年6月22日宣判：「无论有那麽不便，但总要有个决定，我不能说这件案在英格兰法律之下是准许或认可；所以黑人是应该被释放。