树

If the number of sub-tree of XML is more and more, the value must be replaced by the abstracter conception.

使用概念层次树的基本思想是：首先，一个属性的较具体的值被该属性和概念层次树中的父概念所代替；然后，对XML中出现的相同子树进行合并，如果XML中生成的子树数目仍然很大，那么用这个属性的概念层次树中更一般的父概念去替代。

The Double-Headed/Imperial Eagle device, the Games Workshop logo, Games Workshop, Warhammer, Arahan, Athel Loren, Beastmen, Bladesinger, Bretonnia,Branch Nymph, Branch wraith , Chaos, Cyanathair the Corruptor, Dryad, Drycha, Eternal Guard ,Forest Dragon, Glade Guard, Glade Rider, Great Stag, Guardian,Highborn, Horsemaster,Kislev,Kurnous, Lord's Bowman, Malekith, Morgbur, the Master of Skulls, Naestra, Naggaroth, Noble, Orion, King in the Woods, Phoenix King Bel Shanaar, Shadow Sentinel, Sisters of Twilight, Spellsinger, Spellweaver, Tree Kin, Tree Kin Elder, Treeman, Treeman Ancient, Ulthuan, Wardancer, Warhawk,Warhawk Rider, Waywatcher, Wild Hunter, Wild Riders of Kurnous and all associated marks, names, characters, illustrations and Images from the Warhammer world are either ?, TM and/or ? Games Workshop Ltd 2000-2005, where applicable registered in the UK and oilier countries around the world, All Rights Reserved.British Cataloguing-in-Publication Data.

奇美拉，游戏兵工厂logo，Games Workshop，战锤，阿拉汗，艾瑟洛伦，兽人，剑吟者，巴托尼亚，林间仙女，树妖，混沌时代，Cyanathair the Corruptor，森林女神，树精，永恒卫队，森林龙，森林卫兵，森林骑兵，巨鹿，守护者，名门，驯马人，基辅，库尔纳斯，领主的射手兵，巫妖王梅肯丝， Morgbur，骷髅主，纳丝塔，纳戈路丝，贵族，森林之王奥利安，凤凰王贝尔姗娜，暗影哨兵，胞生姐妹，神圣诗人，魔法织造者，树怪，树怪长者，树人，远古树人，Ulthuan，战争舞女，战鹰，战鹰骑士，岗哨，野战猎人，库尔纳斯的山野骑兵，及所有相关的来自战锤世界的标志、名字、特征、插图说明和图片，均归属游戏兵工厂公司，版权所有。

fault tree analysis, least cut-set, constructional importance, probabilistic im portance, coefficient critical importance.

本文介绍事故树分析法，探讨它在船舶运输安全工作中的应用问题。事故树分析法的步骤包括：选定"顶端一事件"建立事故树、事故树化简、事故树的定性

The results revealed that in Shanghai,the epiphytic bryophytes of trees could be clustered into four quadrat groups.

结果表明，上海市树附生苔藓植物可聚类为4个样点组：样点组Ⅰ为7个样点，6个位于市中心，共有树附生苔藓16种，总盖度为12.43%；样点组Ⅱ为市郊样地年龄较年轻的4个样点，共有树附生苔藓11种，总盖度最小为8.47%；样点组Ⅲ为市郊6个样点，共有树附生苔藓33种，总盖度为25.82%；样点组Ⅳ为佘山自然保护区一处，共有树附生苔藓10种，总盖度为26.42%。

The traditional query tree optimization methods,parallel database optimization methods based on left linear trees and right linear trees,bushy trees,and operation of the forest,have their own pros and cons,they have been more in-depth and maturity of the study.The query optimization method based on multiple weighted tree has studied its model of parallel query plan,its complexity model of parallel query plan and query optimization algorithms.The semantic query method transforms an inquiry into one or several semantic equivalence inquiries then has to find and implement a strategy to achieve a better query.Agent-based parallel database query optimization using Multi-Agent technology to automatically search the integrity constraint conditions which are related to the determined query,there for,the efficiency between several relations' joins has been greatly improved.The parallel optimization algorithm,based on genetic algorithm which is suitable for multi-joins of cluster environment,has deeply studied the relations storage options,multi-joins query optimization and query processing and other key technologies based on cluster parallel database.

传统的查询树优化方法，即基于左线性树、右线性树、浓密树、操作森林的并行数据库查询优化方法，各有优劣，对其的研究比较深入、成熟；基于多重加权树的查询优化方法，研究了其并行查询计划模型、并行查询计划的复杂性模型和查询优化算法；语义查询优化方法将一个查询变换成一个或数个语义等价的查询，进而寻找并执行这些等价查询中具有较好实现策略的一个；基于Agent的并行数据库查询优化采用Multi-Agent技术自动查找与给定查询有关的完整性约束条件，使得多个关系间连接操作的效率得到很大的提高；基于遗传算法的并行优化算法，深入研究了基于机群并行数据库中关系存储的选择、多连接查询优化和查询处理等关键技术。

Based on the development, classification, comparation of classific algorithms of spatial indices, the paper designs two efficient spatial indices including the improved quadtree and R+tree, applies them into spatial query processing, and realizes the spatial select query algorithm based the improved quadtree and R+tree, and nearest and k-nearest neighbour query based R tree.

在对空间索引技术的发展、分类和典型算法比较的讨论基础之上，本文设计并实现了两个高效的空间索引—改进的四叉树索引和R+树索引，并将这两个索引应用到空间查询处理中，分别实现了基于改进四叉树和基于R+树的空间选择查询算法以及基于R树的最临近查询和K最临近查询算法。

Nowadays most of researches on the multicast routing are how to generate multicast tree. In case of multicast tree failure, there need to re-route all of nodes behind the failure point so much as re-build the whole tree, this will deteriorate Quality-of-Service, on the other hand, it is insufferable in some multicast applications. We proposed a Fault-Tolerant multicast scheme to resolve this problem. Our scheme creates backup paths crosswise in the ramose node. It can reduce additional cost greatly and recover the failure of multicast tree rapidly.

现在关于多播路由的研究大多着眼于多播树的生成，一旦多播树出现故障，就需要对故障点以下的所有多播接收节点进行重新路由甚至对整个多播树进行重新构造，这一方面降低了服务质量，另一方面有些多播应用不允许长时间的中断，对此本文提出了一种多播容错方案，采用在分枝节点之间建立备份路径的措施，可以在很大程度上减少额外的代价，能够在最快的时间内恢复多播树的故障，并使得恢复后的多播树形状基本上没有改变。

Nowadays most of researches on the multicast routing are how to generate multicast tree. In case of multicast tree failure, there need to re-route all of nodes behind the failure point so much as re-build the whole tree, this will deteriorate Quality-of-Service, on the other hand, it is insufferable in some multicast applications. We proposed a Fault-Tolerant multicast scheme to resolve this problem. Our scheme creates backup paths crosswise in the ramose node. It can reduce additional cost greatly and recover the failure of multicast tree rapidly.

现在关于多播路由的研究大多著眼于多播树的生成，一旦多播树出现故障，就需要对故障点以下的所有多播接收节点进行重新路由甚至对整个多播树进行重新构造，这一方面降低了服务质量，另一方面有些多播应用不允许长时间的中断，对此本文提出了一种多播容错方案，采用在分枝节点之间建立备份路径的措施，可以在很大程度上减少额外的代价，能够在最快的时间内恢复多播树的故障，并使得恢复后的多播树形状基本上没有改变。

The situations of outside and inner arc belt were influenced by height of tree and the height below branch respectively. In the area of 1.0×H and 0.6×H, transmittancy was below 90%, which meant umbrage hazard effect happened in this area. Additionally, the effect was stronger at bottom of the tree.

试验区树荫运动轨迹呈蝶形弧带变化，树高影响投影外弧线位置，枝下高影响投影内弧线位置；在树体东、西侧1倍树高、北侧0.6倍树高范围内，透光率小于90%，在该区域发生林木遮荫胁地效应，距树底点较近区域的胁地效应较强。

Thepresent paper carries on the raise first to the camptothecaacuminata roots of the hair, then in the use chloroform extractioncamptotheca acuminata culture medium the camptotheca acuminataalkali and so on effective component, and examines the law withHPLC to examine its effective component, the examination discoversthe camptotheca acuminata secretion in the culture medium secondarymetabolite besides the camptotheca acuminata alkali, the hydroxylcamptotheca acuminata alkali, the white birch fatty acid, but alsoincludes other effective components.

本论文先对喜树发根进行培养，然后使用氯仿提取喜树培养基中喜树碱等有效成分，并用HPLC检测法检测其有效成分，检测发现喜树分泌在培养基中的次生代谢产物除了喜树碱、羟基喜树碱、白桦脂酸外，还含有其他有效成分。

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。