查询词典 cluster sampling

This paper reports a new GPU cluster system to meet the challenge of computing the protein molecular field by approaches of quantum chemistry. This system uses MPI parallel programming environment to link all nodes of the cluster, adopts Open MP (open multi-processing) as a multi-core CPU programming environment and CUDA as a GPU programming environment.

针对生物化学计算中采用量子化学理论计算蛋白质分子场所带来的巨大计算量的问题，搭建起一个GPU集群系统，用来加速计算基于量子化学的蛋白质分子场。

This is the Analysis of the industrial cluster concept and basic theory, and the shandong peninsula industrial cluster.

分析了产业集群的概念与基本理论，以及山东半岛产业集群的现状。

The TOF MS studies of the transition metal / nonmetal cluster ions and Potassium Cyanide cluster ions

在STO-3g*基组下对〓和〓的结构优化和振动频率分析计算表明它们都有〓对称性的稳定结构。

To resolve the problem of redundancy and pretermission in the cluster-level testing due to errors of classes dependency relationship and classes message interaction, an algorithm for generating test cases of cluster-level based on classes dependencies reduction was proposed.

针对类簇中类间依赖关系以及类间消息交互产生的错误而导致测试冗余和测试遗漏的问题，提出一种类间依赖集约简的类簇测试用例生成算法。

The result was the same entirely. Explanation was set forth to samples of wrong classified.The datum of circulating supply water quality was centralized. Principal component matrix was rotated through factor analysis. Hierarchical cluster of multiple class was realized through factor after rotation. Key factor of influencing cluster was searched. The recipe was recommended and worked well.

对20家企业循环冷却水系统的补充水水质指标先进行均值中心化，然后用因子分析对主成分进行旋转，用旋转后的因子进行了多类的系统聚类，找出了影响聚类的关键因子，为水处理剂配方的初步推荐提供了一种切实可行的方法。

This paper proposes an efficient clustering algorithm for Multivariate Time Series—PCA-CLUSTER.The algorithm applies principal component analysis to reduce the dimension of MTS,and subsequently chooses the principal component series of MTS to cluster by a K-nearest neighbor algorithm.

提出一种高效的多变量时间序列聚类算法PCA-CLUSTER，首先利用主成分分析对MTS数据降维；选取MTS数据的主成分序列进行K近邻聚类分析。

The EOF loadings corresponding to the five highest eigenvalues were used to delineate the air quality regions. The results of EOF method were difficult to interpret because they tend to cluster most stations into the first group. The results obtained by rotated EOF and cluster analysis are similar and more reasonable. It is interesting to note that the clustering results based on 1h and 8h data are similar. The principal component time series of EOF and REOF were analyzed to determine their temporal characteristics.

EOF和REOF法中均采用特徵值为最大的五个EOF负荷作为分区的依据，以EOF划分均质区后容易将大部份测站划为同一区而造成解释困难，而采用REOF方法和群集分析法所得结果相似且较为合理，利用最大小时与八小时臭氧浓度进行划分结果接近，本研究也针对EOF和REOF所求出的主成分时间序列加以分析，以了解其特性。

We discuss the effect on the cluster's orbits caused by different Galactic potential models and different values of the cluster proper motion.

本文进一步讨论了绝对自行值的不同对M3轨道计算结果的影响。

In addition, this paper discuss the application about cluster algorithm provisionally, and analyze apply current situation of cluster algorithm presently. It looks forward application prospect for the study in future.

另外，本文初步探讨了聚类分析算法的应用，分析目前聚类分析算法应用的现状，展望应用前景，为以后研究做基础。

This dissertation involves the study of the growth dynamics of colloidal particles under unequilibrium and irreversibility condition. Firstly, it is of interest to investigate whether the ideal diffusion or reaction-limited aggregation universal behavior can be observed for the initially polydisperse practical system of basic yttrium carbonate as well. The fractal structure of basic yttrium carbonate aggregate cluster was observed using transmission eletron microscopy. The aggregation kinetics of basic yttrium carbonate colloids was studed using dynamic 1ight-scattering techniques. At 1.00mol/l NaCl solution the fast diffusion-limited aggregation behavior was observed with an increase in the aggregate size over time described by a power law. The aggregates are characterized by a fractal dimension D=1.82. The disordered and ramified cluster is consisted of primary colloidal particles and tenuous and more open. These are in good agreement with those observed for other colloidal system such as colloidal gold (1.86), silica (1.85) and polystyrene latex (1.82) in diffusion-limited aggregation from the static and dynamic light scattering by Lin. Therefore ideal diffusion-limited aggregation behavior can be observed in practical polydisperse system as well. Smoluchwski and fractal theories were used to obtain the aggregation rate constant for initially polydisperse system for the first time.

本论文研究胶粒的非平衡不可逆聚集动态学，分为两个部分，第一部分是通过实验研究一个新的初始多分散的碱式碳酸钇胶粒实际体系中，聚集标度性质的普适性，即使用透射电子显微技术观测聚集粒子簇的分形结构，使用动态激光光散射研究碱式碳酸钇胶粒的聚集动力学，胶粒带电而产生静电排斥作用使得碱式碳酸钇胶粒处于稳定状态，当加入电解质NaCl溶液时，碱式碳酸钇胶粒间的Debye-Hückel屏蔽距离缩短，从而降低静电排斥能垒，引起胶粒发生不可逆聚集，加入电解质NaCl的浓度为1.00mol/l时，碱式碳酸钇胶粒进行快速聚集，经历扩散控制聚集机理，形成结构疏松、更为开放的分形聚集粒子簇，其分形维数为1.82，碱式碳酸钇胶粒聚集增长动力学遵循幂函数增长规律，与Lin等使用静态激光光散射和动态激光光散射测量硅胶(1.85)、金胶(1.86)和聚苯乙烯胶乳(1.82)在扩散控制聚集状态形成聚集粒子簇的分形维数值以及粒子簇聚集增长的动力学规律相一致，表明胶粒聚集标度性质的普适性质在初始多分散的实际体系中也是存在的，首次由动态激光光散射的实验数据得到初始多分散胶粒分形粒子簇的聚集速率常数，并且其值与Smoluchowski聚集速率理论预期相符。

Tom: You are right, he worked hard all the time.

你是对的。他一直都是努力工作。

Take shortcomings,failures,and mockings of others as commonplace and a drive to complete oneself,hold your own opinion over the evalution and disscution divested from others,afterwards sink into the state of eliminate mistakes if any or encourge oneself being not being influenced by the sayinngs of others or having no ideas to do.

把缺点、失败及别人的耻笑等看成是一种常事，当成完善自己的动力，对别人的评价和议论自己心中有主见，做到&有则改之，无则加勉&，不为人言所左右或无所适从。