查询词典 cluster sampling

Second,the approach of industry cluster cultivation is put up,one is boosting up industry gross to form proper park scale,two is selecting entering enterprise according to industry domain chain,three is giving priority to wheel and axle industry cluster,four is characteristic、science and technology and ecolgical industry cluster amalgamation development.

其次，提出了长春市工业园区的产业集群培育途径，一是增强工业总量形成合理园区规模，二是依据工业产业链条选择进园企业，三是以轮轴式产业集群为主，四是特色、科技和生态工业集群融合发展。

We implement a novel lightweight object-based storage cluster file system named Cfslight,it has the advantages,such as easy to install and configurate,easy to use,which greatly improves the cluster usability,and makes cluster more administrable.

文章基于Linux操作系统实现了一个新型的轻量级对象存储集群文件系统Cfslight，它的优点是配置安装简单，使用方便，大大提高了集群系统的易用性、易管理性。

The results are as follws: 1 This study randomly selected typical and wild populations of Alpinia oxyphylla Miq measured and compared their number of stem per cluster, plant height, number of fruit ear per cluster, single panicle weight, fruit yield per cluster, 100-seed weight and fruit yield.

结果显示，不同居群间的形态特征有显著差异，其中株高，单穗重和果实百粒重的变异系数较小；单丛茎杆数，单丛果穗数，单丛果实产量的变异系数较大。

These compounds are of substantial interest both inviewpoints of theory and practical applications, mainlyunder the stimulus to achieve synthetic models either foractive sites of iron-sulfur proteins or for transitionmetal catalysts. This thesis describes the synthesis, structures andconformations of 51 new iron-sulfur cluster complexes,which have been characterized by elemental analysis andstandard spectroscopic methods. In addition, single-crystalX-ray diffraction analyses were performed for 4 representa-tive new compounds. Reactivities of μ-〓 with mono- and di- Grig-nard reagents derived intermediates toward various organicelectrophilic substrates were studied, along with complexa-tion of arynyl-containing iron-sulfur clusters by 〓Thus, several bridged, non-bridged, monomeric, dimeric,homonuclear, heteronuclear iron-sullfur and iron-sulfur co-balt-carbon cluster complexes were synthesized. A novelreaction and convenient route for the synthesis in highyield of tetranuclear iron complexes 〓 containing atetracoordinated sulfur atom was discovered, whereas aplausible mechanism based on experimental results was propo-sed for the formation of the new cluster type.

鉴于有机铁硫原子簇化学在基础理论发展和应用方面的重要意义，因此我们开展了这一课题的研究，并取得以下主要成果： 1、本文共合成了51个新有机铁硫及含钴碳簇基的有机铁硫原子簇配合物，除用元素分析，NMR，IR，MS法表征其结构和构象外，还用X-光衍射技术测得四个代表性配合物的单晶结构和构象； 2、我们业已发现炔基Grignard试剂同〓可形成一种&开环&与&闭环&中间物的平衡混合物，研究该平衡混合物同各种亲电试剂的反应； 3、研究发现了一种可高产率地形成〓含〓四配位硫挛合簇的新化学反应并对此反应提出了—种有趣的反应机理； 4、首次由1，4-二溴丁烷双Grignard试剂与〓制得一种新型铁硫簇双硫阴离子活性中间体，并进而研究了它的亲核反应性能； 5、找到了通过〓的光化学反应来合成簇合物〓-〓的一条有实用价值的新路线。

A distributed secure clustering protocol is proposed, in which the secure network initialization, random number broadcast from the base station and one-way hash chain are used to achieve the resiliency against possible attacks including node personating, cluster-head occupying, malicious cluster-member recruiting and multiple cluster-membership attacks.

针对成簇协议所面临的各种安全威胁，提出了一种分布式安全成簇协议，通过网络安全初始化、可信基站的随机数广播和单向密钥链技术来有效地抵御节点伪装和簇首占据攻击、簇成员恶意征募攻击和多重簇成员身份攻击。

We led the density function into the data structure as the weight, and use dense micro-cluster to describe the arbitrary-shaped clusters in data streams. In addition, we propose candidate core-micro-cluster and isolated micro-cluster synopses to maintain and distinguish the potential micro clusters and isolation point in data streams.

我们把密度函数以权值的形式引入数据结构中，并利用核心微簇描述数据流中任意形状的簇，并提出候选核心微簇和孤立微簇结构分别用于维护并区分数据流中潜在的核心簇和孤立点。

Chapter one hackles the essential connotation of industry cluster and competence, analyses synoptically the features and advantages of industry cluster, and the current competence estimate situations of world famous industry clusters, and sets forth the relationship and functional mechanism of industry cluster and competence which is the major theoretical gist.

第一章梳理了产业集群及竞争力的基本内涵，并对产业集群的特点与优势、世界著名产业集群竞争力评价的现况做了概要的分析，阐述了产业集群与竞争力的关系和作用机理，是本文研究的主要理论依托。

Chapter one hackles the essential connotation of industry cluster and competence,analyses synoptically the features and advantages of industry cluster, and the currentcompetence estimate situations of world famous industry clusters, and sets forth therelationship and functional mechanism of industry cluster and competence which is the majortheoretical gist.

第一章梳理了产业集群及竞争力的基本内涵，并对产业集群的特点与优势、世界著名产业集群竞争力评价的现况做了概要的分析，阐述了产业集群与竞争力的关系和作用机理，是本文研究的主要理论依托。

Generic technoligy is the key factor to upgrade industrial cluster innovation.with the relavant theorics and characteristics,the paper manages to model this technolgy from the perspective of system viewpoint,involving structure,fuction and operating mechanism.xiqiao textile industrial cluster succeeds in interacting with the outside environment so as to gain the sufficnent fund and information support.it also accelerates the uggrading process of this industrial cluster.

为此以产业集群创新理论为基础，结合共性技术性质，从系统论高度，构建产业集群共性技术创新模型，了解系统的结构、要素功能以及运行机制。西樵纺织产业集群，通过与外部环境的交流互动，取得较多资金、信息支持，加快了西樵纺织产业集群升级的步伐。

Through topological collection, the Cluster Management Technology congregates the Switches at different places to a cluster, and it uses the unified managemental channel to manage this cluster.

集群管理技术通过拓扑收集将物理上分散的交换机设备组成一个集群，并提供统一的管理通道对这些交换机进行管理，从而节约了资源开销，提高了管理效率。

When this condition occurs, inbound replication with the source partner is stopped on the destination domain controller and event ID 2042 is logged in the Directory Services event log.

计算机密码学是研究计算机信息加密、解密及其变换的科学，是数学和计算机的交义学科，也是一门新兴的学科。

Instructions: click on the thumbnails to see a larger image, then use the left-right arrow keys to scroll through the slideshow.

使用说明：滑鼠点在小图上即可放大观赏。开启后键盘左右键可用来换照片。