查询词典 cluster set

After two-cluster testing,branch length testing and relative rate testing ,two sequences(Melantitta nigra and Aythya americana) of 15 Cty b sequences were deleted because thek evolutionary rate were heterogeneous. The divergence between Anseriformes and Galliformes was chosen as an anchor point. Nucleotide sequence and amino acid sequence of 13 sequences data set was used to calibrated Anatidae molecular clocks. The results indicated that amino acid sequence is better than nucleotide sequence when divergence time is calculated with two kinds of sequences. The reliable divergence time of Anatidae were estimated with """"1+2TiTv"""" model.

经过二簇检验、分枝长度检验和相对速率检验，删除2条速率不恒定的序列后，用剩余的13条序列，以鸡形目与雁形目的分歧时间(89.8MYA)为锚定点，用顺序标定法标定鸭科鸟类分子钟的分析结果表明，用&1+2TiTv&分析得到的鸭科鸟类的分歧时间比较可靠；氨基酸序列用泊松校正模型和Γ模型估计的分类单元间的分歧时间则比较一致，表明氨基酸序列更适合用于鸭科鸟类分子钟的研究；用同一基因标定分子钟时，较长序列得到的结果标准误比较小；与核苷酸序列相比，氨基酸序列更适于用作分子钟的标定。

The basic idea of Frequent-Wavelet is to pass time series through the atrous smooth filters set, and then cluster the derived subsequences, so the problem of FTS mining is converted to the problem of FIS mining.

Frequent-Wavelet算法的基本原理是使时间序列通过多孔平滑滤波器组，然后对来自多个尺度序列的子序列进行聚类，从而将时间序列的频繁模式挖掘问题转化为项目序列的频繁模式挖掘问题。

objective to set up mode of management,prevention and cure on epilepsy among rural population in ningxia by primary medical care system,then extend toward others rural regions.methods doctors in county,countryside and villege level were trained how to screen,diagnose,prevention and treat epilepsy among 140 countrysides and 3,786 thousand rural populations in ningxia.cluster sampling was adopted to screen convulsibility epileptics,to freely treat with pb.

目的 建立宁夏农村地区癫痫的防治和管理有效模式，并逐步向其它农村地区推广。方法采取整群抽样方法，选择宁夏农村地区140个乡，共计378.6万人群。通过对县、乡、村医生的专业培训，筛选惊厥性癫痫患者，采用苯巴比妥单药免费治疗，分别在第3、6、9和12个月对其疗效进行评估。结果培训了172名县、乡、村医生。

This paper finds a kind of form of industrial cluster: the human-capital employees from the original firms demise to carve out, the homothetic firms are set up, the characteristic industry is formed.

事实上，本文发现存在这样一种产业集聚形成机制：区域内的初始企业中不断有人力资本型员工离职创业，在当地创立新的同类企业，逐步形成当地的特色产业。

This algorithm could find optimal initial starting points applying iterative max-min distance means and then combined the small clusters from given data set into final ones,for an elongated or large cluster could be considered as the union of a few small distinct hyperspherical clusters.

运用两阶段最大最小距离法搜索出最佳初始聚类中心，将原始数据集分割成小类后用合并算法形成最终类，即用多个聚类中心联合代表一个延伸状或者较大形状的簇。

Firstly, the K-means clustering algorithm was improved by using the rough set theory to determine initial cluster centroids. On the basis of K-means clustering segmentation and region connection, the edges of the target and backgrounds were extracted accurately and intactly. After boundary tracking, the potential target regions were detected according to the characteristics of the extended target.

在预分割阶段，运用粗糙集理论求取初始聚类中心，在K-均值聚类分割和区域连通的基础上，检测图像边缘并进行边界跟踪，对于获得的目标和背景团块根据扩展目标特性确定目标潜在区域。

Cycloid cluster is a new concept presented in this paper, which is a set ofcycloids. To process the back-angle accurately and efficiently, the parameters ofcycloid are adjusted to make the envelope curve of cycloid approximate involute .

使用摆线簇包络线逼近渐开线是本文提出的一种新方法，摆线簇就是一组摆线，通过调整摆线簇中每条摆线的参数，可以使摆线簇中摆线包络线高精度的逼近渐开线，进而实现倒锥的加工。

The front composed of a shaped oval plaque with a circular cluster centre to scrolling ribbons and fan terminals suspended from a series of arched links intersected by five panels of similar design set throughout with circular-cut diamonds enhanced with baguette-cut accents.

正面是由许多圆形组成的一块椭圆形金属片，两侧为卷曲的缎带与扇形末端，悬挂自一系列拱形链环，间隔5个类似设计的部分，每一部分镶嵌圆形切割钻石，配以长方形切割钻石作为强调。

The method firstly organizes support vectors in clusters in feature space, and then,it finds the pre-images of the cluster centroids in feature space to construct a reduced vector set.

此方法首先在特征空间中对支持向量进行聚类，然后寻找特征空间中的聚类中心在输入空间中的原像以形成约简向量集。

The results compared with theFEM results given by MSC/NASTRAN show that the PC cluster set up in this paperis reliable and the algorithms presented are efficient,and the solution of stresses ismore accurate tan FEM.Parallel computing can be served as a powerful tool inexpanding the application of BEM and will accelerate the development of BEM incertain extent.

同时还说明边界元法与并行计算的手段相结合，能够发挥其计算精度高的优势，拓展边界元法在工程实际中的应用范围。

There are two types of gold deposits in this area, namely altered rock type and quartz vein type.

本区金矿床包括两种类型：柴胡栏子金矿床为蚀变岩型金矿；莲花山和红花沟金矿床属石英脉型。

You were home and it was two weeks ago.

你回到了家里。当时是两周前。