并行算法

According to the precise time-integration method, this paper discusses the parallel algorithm for whole domain and subdomain precise integration of diffusion equation.

讨论了一维扩散方程的全域精细积分和子域精细积分的并行算法，给出了对流扩散方程的子域精细积分并行算法，其精度优于单点精细积分法。

And the numerical results of parallel algorithm showed that the parallel computing approach is effective and efficient.

而并行算法的加速比和效率实验结果表明本文的两种并行算法也具有很好的加速性能。

The thesis further discussed the effect of the network communication on the parallel computing efficiency.

同时，也比较了在并行算法设计中网络通信因素对并行算法效果的影响。

In this paper, we discuss some existed parallel association rule mining algorithms ,and then point out the challenges in this field.

本文介绍了挖掘关联规则一些主要的并行算法，并对它们进行了一定分析，指出了发展并行算法要考虑的一些问题。

In addition, the degree of parallelism was enhanced greatly.

更重要的是，新算法大大提高了原并行算法的并行度。

In this paper, we present a class of equation model for image denoising and edge enhancement. The model is based on robust statistics error norm and variational theory. By analysing the parameters of the equation and designing the methods of module partitions, the numerical experiments reach a good result and the parallel efficiency has been improved remarkably with finite difference method.

本文基于稳健统计误差模函数及变分原理构造了一类用于图像去噪、增强边缘的方程模型，对相关参数进行了分析，设计了该方程有限差分数值求解的并行算法，并对分块模型及实现过程进行改进，提高了并行效率，在此基础上完成了并行数值实验，并对结果就误差模选取、并行效率等方面进行了分析。

One is local entropy difference image matching parallel algorithm based on LS MPP, and the other one is local entropy difference image blocking matching parallel algorithm which is designed and realized by strategy combined folding sum, overlay windows mapping, with recurrence calculation column sum and row sum.

一种是基于LS MPP的局部熵差图象匹配并行算法，另一种是综合运用折叠求和，叠加窗口映射，递推求列和与递推求行和策略设计并实现的局部熵差图象分块匹配并行算法。

After the tested N gas components are led into the spectrograph via sampling probe and pipeline, the spectrograph obtains the transmittivity data in the scanned wave number or wavelength range and transmits the data to the computer, the computer extracts the effective characteristic quantities as the input to the parallel supporting vector machine algorithm module, and the supporting vector machine outputs the multiple component gas concentration values.

被测的N个多组分气体经气体采样探头与连接管路导入光谱仪，由光谱仪获得扫描波数或波长范围内各波数或波长对应的透射率关系给出光谱数据经数据传输线进入计算机。进入计算机内的光谱数据由软件的数据预处理模块提取有效的特征量，作为支持向量机并行算法模块的输入，支持向量机并行算法模块的输出为N个多组分气体浓度。

The following are the results: 1. An abstract meteorological phase parallel model for numerical weather prediction is developed as follows:〓 In this equation, parallel wall clock time related with computing grid numbers, load imbalance, communication and synchronization overhead is given out. It can be used to design and analysis the parallel algorithm.

该研究工作的主要结果如下： 1 发展提出了一个适用于气象数值预报模式的阶段并行模型MPPM：〓它表明了并行计算时间与数值模式的计算格点量、负载平衡因子、通信开销、同步开销及并行开销等之间的关系，为设计和分析数值预报模式的并行算法提供了理论依据。

The results show higher speedup and efficiency. The algorithm is efficient for parallel computing.

计算结果表明该算法具有良好的并行加速比和效率，是一种有效的并行算法。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。