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In order to improve the convergence of the back analysis of the rock-fill material parameters, four improved PSO methods have been proposed in this paper. Two are convergence improved PSO, and the others are the PSO based on multi-objective problem.

为提高标准微粒群算法在堆石坝坝料参数反演分析中的适应性,本文采用收敛性改进的微粒群算法和基于多目标问题的微粒群算法,详细阐述了算法的改进原理。

By iteratively combining these two procedures we achieve a way of training the configuration of RBFNN. In addition, the algorithm is very robust with respect to the noise level. Simulation experiments show that the proposed algorithms are sound. In chapter 3, which is the extension of chapter 2, the improvements of the architectures of RBFNNs and the solutions of their relating problems are discussed, Firstly, an new distance metric is advanced and a forward orthogonal least square selection procedure is applied to learning the parameters of classification function and selecting the important input nodes.

首先分析了目前存在的同时确定RBFNN结构和参数的方法的缺陷,在此基础上提出了用基于拉马克的进化学说的进化编程算法来改进算法,以克服某些缺陷;然后针对受到严重噪声污染的系统,如何提高RBFNN的泛化能力的问题,利用基于AIC的适应度函数的改进遗传算法学习结构和参数;最后介绍基于MDL原理的方法,将优化网络的结构和参数分为两个阶段:训练和进化,先自适应地改变RBFNN基函数的中心和宽度,同时训练输出线性权值,再用基于MDL原理的适应度函数的标准GA来优化隐层节点,通过交替使用这两过程达到训练RBFNN的结构和参数的目的,该算法具有较强的鲁棒性。

Second, we research the Baum-Welch algorithm of modified HMM and derive the update parametric estimation equations for modified HMM based on traditional HMM.

其次,在传统的隐马尔可夫模型的基础上,研究了改进的模型的前向-后向算法和Baum-Welch算法,并导出了改进的模型的参数估计公式。

Based on simulation and thorough research of the muti-effect evaporative system, a process of paratactic combination evaporation is added to this system and Genetic Algorithms is used for optimization. In this thesis, Simple Genetic Algorithms and Modified Genetic Algorithms are used to optimize the pressures in evaporators.

在模拟的基础上,通过对齐鲁石化氯碱厂蒸发系统进行深入研究后,本文将并列组合式热泵蒸发工艺应用到该系统中,并运用简单遗传算法和改进的遗传算法对改进后蒸发系统的压力进行了优化,优化的结果显示生蒸汽用量分别减少14.8%和18.5%。

Firstly, Dempster-Shafer is developed by not only considering the certainty of the evidence, but also considering the average support of the evidence to different subsets in the assignment framework so that it can give more reliable combination result. Secondly, amplitude ratio feature and Euclid distance of the probability density distribution function in Pearson graph from different temporal SAR images are extracted to present change feathers in different scales. Finally, the improved Dempster-Shafer algorithm is applied to fuse the two different features to detect change information of SAR images.

首先通过综合考虑证据本身的确信度和证据对辨别框架中子集的平均支持度进行证据间的加权合成,改进证据理论对证据的合成,提高其可靠性;然后提取不同时相图像间的散射幅度的对比度和概率密度分布函数在皮尔逊图中的欧式距离,两种特征参数代表了像元级和区域级不同空间尺度下微波遥感图像中关于地表变化的信息;最后将改进的证据理论用于两特征之间的融合处理,得到地表的变化信息。

We report here creativity using compound solvent as solvent is the unique of the new technology on the basic of perpendicularity experiments and with the actual situation of our country, the effect of reaction temperature, reaction time, rate of material were optimized. Rate of yield can reach beyond 98% and this technology has successfully applied in practical production with the output of 300t per year.

解决以上两个问题是改进得克隆生产工艺的关键,本文针对上述问题,并且结合我国实际情况,在正交试验的基础上创造性的选择了复合溶剂,改进了得克隆的生产工艺,确定了最佳的投料比、反应温度、反应时间等反应条件,溶剂可以循环利用,并且得到了98%以上的高产率。

In order to resolve this problem, we bring forward a modified algorithm and apply it to pre-stack inversion of reservoir parameters (Poisson ratio, P-wave velocity and density).

本文在前人研究的基础上提出了改进的模拟退火算法,同时利用改进的算法反演了地层泊松比、纵波速度和密度。

The significant improvements over then competing designs being that he employed the improved glass prisms in an air spaced fashion in the form of the now traditional Porro binocular permitting a wider separation of the doublet objective lenses thereby resulting in markedly improved depth perception.

超越其他竞争方案的重大改进就是,在现在传统的普罗双望镜体空间内,使用了改进提高了的玻璃棱镜,使得两个物镜的基线距离能有更宽的分隔,从而明显提高了视觉深度。

Firstly, milling mechanism of planetary ball mill and process of flaking microsphere aluminum powder were introduced simply in milling process,and several main factors were also discussed in course of milling aluminum powder by planetary ball mill.

首先,简单介绍了球磨工艺过程中行星式球磨机的球磨机理及微球铝粉片状化过程,并讨论了用球磨机在球磨铝粉过程中的几个影响因素;其次,是分离工艺过程中筛分和过滤待改进的工艺条件;第三,探讨了捏合过程对整个产品体系稳定性的影响;最后,简易配制涂料,采用相关仪器对产品质量进行评价,并提出三方面的改进要求。

Based on the request of filter press, better filter cloth was choose and on the bases of calculation by using I-deas8.0 software, the structure of draw-plate was improved, and the filter gasket of filter press was redesigned.

根据本课题中板框压滤机的要求选择了合适的滤布,利用有限元软件I-deas8.0对滤板进行了受力分析,并在此基础上进行结构改进设计;同时对拉板装置、压滤机的滤圈进行了改进设计。

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I will endeavour to find you some assistance.

我尽力帮你找人帮忙。

At first I only know bruck is the idol of American younglings, afterwards I returned back to Taiwan ,even in Beijing last year ,I saw her poster everywhere, I was so surprised at her charm.

起初我只晓得布鲁克雷德丝是美国少男少女崇拜的偶像,后来回台湾,甚至去年在北京,居然也四处看见她的海报,才惊讶她的魅力之大。

Ah may dee:You are chinese living in a democratic country.

你是居住在民主国家的中国人吧。