查询词典 acceleration of convergence

By the numerical analysis of the ultimate bearing capacity of two- and three-dimensional footing under combined loading mode, the results show that the effect of alteration of underground water lever on bearing capacity of three-dimensional foundation is more than on that of two-dimensional foundation, the effect of soil gravity on bearing capacity of three-dimensional foundation is more than that of two-dimensional foundation. At the same time, the numerical calculation process of ABAQUS indicates that whether the geostatic stress is balanced or not has great effect on the numerical convergence. In view of the effect extent of dilation angle of soil on the ultimate bearing capacity and the failure pattern of foundation, the condition of two-dimensional plane strain is higher than that of the three-dimensional foundation.

复合加载模式下，通过对三维矩形基础和二维条形基础进行数值分析，结果表明：黏性土地基中地下水位的变化，对三维矩形基础极限承载力的影响程度高于对二维条形基础的影响；在求解地基极限承载力的过程中，土体重度对三维矩形基础的影响明显高于对二维条形基础的影响，同时ABAQUS数值计算过程表明，地基土体地应力能否合理平衡，对数值求解过程中是否收敛有很大的影响；就土体剪胀角对地基极限承载力的影响程度而言，二维平面应变情况下土体剪胀角对极限承载力的影响比三维情况下的影响更明显，即土体剪胀角对条形基础极限承载力的影响高于三维矩形基础。

This paper advances a Fast BP algorithm. It accords to the system error to adjust learning speed. By procasting cotton heliothis armigera, we made a compare to these two kinds BP algorithm's convergence speed.

本文在对BP网络现行算法研究的基础上，提出根据系统误差自适应调节学习率的快速BP算法，并以棉花棉铃虫预测为例，对两种算法的收敛速度进行了比较。

That direct search methods had "been developed heuristically and no proofs of convergence have been derived for them".

直到现在，还能听到有关直接搜索法是基于启发性发展起来的，并且没有有关收敛性的证明。

A new crossover operator is proposed to keep goad genes and enhance the search performance. Local search mechanism is added into GA to find solutions for TA problems with a more rapid convergence speed. Simulated annealing is used to overcome the problem of local optimum. A heuristically greedy local search is also proposed to improve the search efficiency. The simulation results show that the improved algorithm can improve the search efficiency of GA.

构造了适合于目标分配问题的染色体；设计了搜索性能较好且能够保留优秀基因的交叉操作方法；将局部搜索机制引入标准遗传算法，提高了目标分配算法的收敛速度；把模拟退火算法引入局部搜索问题，在一定程度上避免了局部最优问题；将贪婪算法应用于局部搜索提高了最优分配方案的搜索效率。

A new fuzzy Kohonen clustering network is proposed which integrates Fuzzy c-Means model as the fuzzy control mechanism into the learning rate and updating strategies of Kohonen network.It effectively overcomes the shortcomings which occur during clustering network parameters are adjusted heuristically The numerical results show improved convergence as well as reduced clustering errors.

本文提出了一种新的模糊Kohonen聚类网络，它将模糊c-均值作为模糊控制机制结合到Kohonen网络学习和更新策略中，有效地解决了经典Kohonen聚类网络中学习参数启发式调整的缺点，仿真结果表明网络的收敛性和分类结果都得到了很大改善。

This paper studies the exponential stability of cellular neural networks with time- varying delay by making use of the homoeomorphism theory, the idea of vector Lyapunov function, M- matrix theory and inequality - technique, offering the grounds for uniqueness of equilibrium point existence and the global exponential stability and estimating the exponential convergence rate index.

利用同胚映射理论、向量Lyapunov函数思想、M-矩阵理论和不等式技术，研究了具有变时滞的细胞神经网络模型的全局指数稳定性，给出了判定平衡点的存在唯一性以及全局指数稳定性的一个判据，并且估计了收敛速度指标。

A systematic convergence tests for hyperspherical potential curves, channel functions, are performed to assess the validity and efficiency. The challenging three-body problem with complex channel-coupling is solved efficiently and accurately. Accurate ground-state energy, structure parameters, and rotantion constants for Ar2Kr and Ar3 are obtained and compared to other theoretical values in the literatures.

系统研究了超球势曲线、道函数的特征与收敛性；实现了有复杂多通道耦合时重惰性原子三聚体的精确求解，得到了Ar2Kr和Ar3惰性原子三聚体精确的基态能量、结构参数及转动常数，并与文献结果进行了比较。

This method uses what Professor Salton has proposed as the vector spacial model to express text as an invisible vector in hyperspherical space.It makes use of certain pre-disposal methods (reduce the dimensions,clustering thesaurus,filtering out old-fashioned words) to reduce the dimensions.It usescosines to measure the degree of similaritybetween texts and uses the total similarity as the target convergence vector.It produces clustered results by using restricted iteratives to achieve partial perfection.

该算法用Salton教授提出的向量空间模型把文本表示成不可视的超球向量空间的一个向量，采用一定的预处理手段(降维、同义词归并、停用词过滤)完成维数约减，使用余弦相似度度量文本之间的相似度，并选择总凝聚度作为目标收敛函数，通过有限次的迭代达到局部最优，输出聚类结果。

As a result of Funiu Mountains and the convergence of Tongbai Mountains here, throughout the formation of the size of peaks 172, although more than 500 meters peaks 54, such as palm Longwang, Wufengshan, Rohan Hill, Tongshan altitude are more than 600 meters; However, Baiyunshan (commonly known as Imperata blocking) the most tall, 983 meters above sea level than we are all familiar with the old Leshan百十meters higher, as the majestic mountain, Wanfeng Central humps, clouds covered the top and has always been regarded as bleeding,汝河II Jasson water.

由于伏牛山脉和桐柏山脉在这里交汇，全境形成大小山峰172座，尽管500米以上山峰54座，比如龙王掌、五峰山、罗汉山、铜山海拔都在600米以上；但白云山最为高大，海拔983米，比大家都熟知的老乐山高出百十米，由于山势雄伟，万峰环拱，白云盖顶，一向被视为泌水、汝河二水之界山。

While the trend of convergence infinancial business in the world is becoming obvious, the separate regulation mode incurrent China is now losing its basis for further development.

随着各国金融业混业经营趋势的逐渐明显，我国现阶段实行的分业监管模式显然已经缺乏发展的基础。

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。