查询词典 convergence

In conditional regression of convergence, the model find that the growth of macro-economic tax burden are negatively related to the gap between city and rural, the proportion of light and heavy industry, the primary industry.

在条件收敛回归中，城乡差距、轻工业比重和第一产业构成对区域宏观税负增长产生负面影响，而国有经济比重、城市化、经济绩效和对外贸易等则对宏观税负增长产生正向推动作用。

In recent years China economy fast growth, but various local development situation is different. Because the geographical environment and the humanities condition differently creates the city and countryside disparity. Various local growth speedy is different. This empirical study, using the regional data of 204 cities in China between 1996 and 2001, discusses whether exists conditional convergence in China.

摘要 近年来中国大陆在经济上的成就是有目共赌，但境内各地区发展情况却不一致，因地理环境、人文条件不同造成城乡差距，各地区的成长速度不同，本研究以1996年~2001年中国大陆204个地级城市的经济成长率及影响经济成长率之变数资料为基础，探讨中国大陆各城市间是否存在条件收敛。

In cross-section analysis, there exists conditional convergence in China and spatial error model is better than spatial lag model. In panel data analysis, fixed effect spatial error model is better than fixed effect spatial lag model.

在横断面分析方面，中国大陆地级城市间存有条件收敛，以空间误差模型较佳；Panel Data分析则以固定效果空间误差模型优於固定效果空间落迟模型。

Results show that existence from strong convergence of water vapor and the conditional convective instability in the middle and low troposphere probably provided the suitable environment for heavy rainfall.

分析表明，对流层中低层水汽的大量集中以及对流不稳定条件的存在可能对此类系统发展提供了有利环境，对其启动的机制作了初步的讨论，认为地形的动力强迫和地面冷锋以及低空急流扰动可能对此类系统的发生发展起了触发作用。

In terms of the synoptic environment and precipitation characteristics, there were some common characteristics in these two cases. For instance, warm and moist air with the conditional instability atmosphere in the lower troposphere, it was associated with the highest equivalent potential temperature gradient and strong moisture contrast to below 700 hPa. The lower-level convergence was the major produced mechanism of MCS and the low-level southwesterly flow generated convective instability.

从综观环境条件与降水特徵显示，两个案共通特徵包括（1）低对流层属暖湿条件性不稳定大气，（2）最大相当位温梯度以及水气梯度分布於700 hPa以下，（3）低层辐合均为个案中MCS之重要激发机制，（4）有明显低层西南喷流，大气呈现对流性不稳定状态，（5）中层短波槽线的移入，以及（6）高层辐散分流场的存在，提供MCS发展的有利环境条件。

In this paper a class of new conjugate gradient methods are presented, with which the global convergence with generalized Wolfe line search is proven.

本文提出一族新的共轭梯度法，证明了其在推广的Wolfe非精确线搜索条件下具有全局收敛性。

The two Armijo-type line searches proposed in Chapter 4 are shown to guarantee the global convergence of the class of conjugate gradient methods.

在第四章提出的两种Armijo型线搜索下，针对不同的线搜索参数分别讨论了共轭梯度法簇的全局收敛性。

Combined CD method and a new conjugate gradient method given by Liu.Y, Storey. C, the second class of nonlinear conjugate gradient method is proposed, which not only has descent property, but also is proved global convergence with the general Wolfe line search. Finally, the numerical results show this class of conjugate gradient methods is very efficient.

第二类算法是结合CD法和Liu.Y， Storey.C提出的新共轭梯度法，提出一类新的非线性共轭梯度法，新方法不但具有下降性质，而且在推广的Wolfe线搜索下是全局收敛的，最后进行了数值验证。

The characteristics of the steepest descent method's small amount of computations and conjugate direction method's fast convergence combined, a conjugate vector base method for solving ill-conditioned linear equations was proposed.

结合最速下降法计算量小和共轭方向法收敛速度快的特点，提出了一种求解病态方程组的共轭向量基的方法。

In terms of the minimum question of a positive definite quadratic function,a set of Newton directions in minimum points derived with an accurate single dimensional search are used to produce a set of conjugate direction ,and a proof of convergence is presented.

对正定二次函数极小问题，利用精确一维搜索所得极小点处的牛顿方向来生成一组共轭方向，并给出收敛性证明

I'm not an actor. I'm a professor of paleontology.

我不是演员，我是古生物学教授

Spider Network Web site that is a very image of the name.

网络蜘蛛即Web Spider，是一个非常形象的名字。