To overcome the flaw of conditional quad-tree special indexing's large I/Otime and low query efficiency in processing large scale neighbor searching, we modify thequad-tree space indexing based on the Hilbert spce filling curve law, and then advance theHilbert space filling curve building method in allusion to the partition of un-filledquad-tree and block image data's organization strategy.
针对遥感影像的大幅面、海量性特征，结合本文提出的遥感影像自动分割策略，选择无重叠的四叉树分块作为多光谱遥感影像数据的存储管理基本单元。
Fruit tree production gradually to stock cooperation system, joint stock system transition, realization large-scale management.
果树生产逐步向股份合作制，股份制过渡，实现规模经营。
It constructs Trigram statistic language model based on large-scale corpus, and builds corresponding bintree for the sentence waiting disposal; and then it predicts speech pauses at two different angle using information provided by tree.
基于大规模语料，利用三元模型Trigram，建立统计语言模型；基于SLM为待处理句子生成相应的二叉树；将生成的二叉树所包含的信息，从不同角度应用于语音停顿的预测。
The paper formulizes the definition of canons grid-partition methods and discusses a pair of tree-index structures which are preferable for handling large-scale and high dimensional point data set.
在统一的框架下给出了各种数据空间网格划分的定义，讨论了两种适用於实现网格化数据索引的R-树和PK-树索引结构。
The paper firstly examined the mechanical characteristics of wood samples at micron scale, which provided some theoretical basis for the application of wood microtome section to study the in-tree variation of longitudinal mechanical properties of tracheids. In chapter 3, microtension of wood microtome section is for the first time used to explore the in-tree variation of longitudinal MOE of tracheids, meanwhile the size effect of mechanical properties of wood at micron scale is taken into count.
本项研究正是基于以上考虑而提出的，首要目标是提出能快速评价管胞纵向力学性质的实验技术，并以此研究了人工林杉木管胞纵向力学性能的株内变异规律；目的之二是从实验和理论的角度研究管胞细胞壁力学性质的主要影响因素，为树木木材品质的基因改良提供量化的目标和指标。
The last frame cents occurring on a large scale in 6 to 8 months, often gathered during the day just in Green Oak outflow sap, - December or in the tree also often found hundreds gathered together on the last frame cents, in the evening, there are lights in the mountains, also can often find their tracks, Taiwan is a large common starvation C Ji its larvae often called chickens insects, pupa to adult emergence period, a year generation.
独角仙大量发生於 6~8月，白天常常聚集在青刚栎流出树液处，或是在光腊树上也常可发现聚集上百只独角仙的盛况，到了晚上，在山区有路灯处，也往往可以发现他们的踪迹，是台湾常见的大型畟峞C其幼虫常称为鸡母虫，经蛹期羽化为成虫，一年一代，由於本种并非保育类昆虫，加以体型大而健壮，常被做为儿童玩赏及昆虫教学使用。
However, the number of traversal tree node is too large when the database is on a big scale.
但当数据库较大时，生成PT-Tree需遍历的树的节点数目很多。
Alarming scale with the Green Tree Festival are inseparable.
这样惊人的绿化规模同值树节是分不开的。
Up to this time, the major challenge to sign language recognition is how to develop approaches that scale well with increasing vocabulary size In this paper, an approach to large vocabulary, continuous Chinese sign language recognition is presented, which uses subwords instead of whole signs as the basic units Since the number of subwords is limited, HMM based training and recognition of the CSL signal become more tractable and have the potential to recognize enlarged vocabularies Furthermore, the proposed method facilitates the CSL recognition when finger alphabet is blended with gestures About 2400 subwords are defined for CSL One HMM is built for each subword, and then the signs are encoded based on these subwords A decoder that uses tree structured network is presented Clustering of the Gaussians on the state, language model and N best is used to improve the performance of the system Experiments on a 5119 sign vocabulary are carried out, and the correct rate is over 90% for continuous sign recognition
迄今为止，手语识别面临的最大问题是如何解决词汇集易扩充的连续识别提出一种大词汇量连续中国手语识别方法，将词根作为识别基元，由于基元的数目是有限的，因此基于HMM的手语信号的训练和识别变得比较容易处理，可以实现更大词汇量的识别除此之外，所提方法还有利于实现手势语和手指语的混合识别从中国手语中共整理出2 4 0 0多个词根，为每个词根建一个并行的HMM模型，对各数据流的HMM模型进行聚类，确定出手语识别的基元根据这些基元对手势词编码，并建立了树状搜索网格，使用状态结点上高斯密度函数聚类、语言模型和N Best方法提高系统的速度和精度对 5 119个手语词做了实验，连续语句的识别率可在 90 %以上
In the present study, large-scale genetic diversity and population structure of C. mollissima natural populations were investigated by using microsatellite markers. High level of genetic diversity had been observed in C. mollissima natural populations, and most of the total genetic variation occurred within rather than among the populations. Among the four sampling regions (central, eastern, southwestern and northwestern China), a higher level of genetic diversity was found in populations from central China, and the populations from southwestern China was found to be the lowest. Combining with previous research, it could be inferred that the Shennongjia and neighboring area was the modern center of the genetic diversity of C. mollissima. Gene flow model may have impact on population history of C. mollissima as gene flow-drift equilibrium test confirmed, but most pairwise differentiantion were significant, suggesting adaptive differentiation may occur in C. mollissima natural populations. Natural selection may play a more important role in the evolution of the plant. No significant association between genetic distance and geographic distance was detected by Mantel test. The UPGMA tree based on Nei`s unbiased genetic distance was not absolutely consistent with the geographical distribution of the populations, suggesting no significant genetic boundary exsited beween different geography regions. The delineation of ecological zones lacked molecular evidence.
本文采用微卫星分子标记，从大尺度地理格局对中国板栗自然居群的遗传多样性和遗传结构进行了分析，结果表明中国板栗自然居群具有丰富的微卫星遗传多样性，且遗传变异主要存在于居群内；华中地区的中国板栗自然居群的遗传多样性最高，其次为西北地区和华东地区，而西南地区遗传多样性最低，在综合前人研究的基础上，推测神农架及其周边地区为现代中国板栗的遗传多样性中心；基因流－漂变平衡检测结果表明基因流模型对居群历史产生了影响，然而大部分居群间的遗传分化均为显著，暗示中国板栗自然居群间可能存在适应性分化，自然选择作用对中国板栗群体遗传分化的影响可能比基因流作用的影响更明显；遗传距离与地理距离之间无显著相关性；UPGMA聚类分析结果与其地理分布格局并不吻合，说明不同地理区域的中国板栗自然居群间在遗传上并没有明显的界限，对中国板栗生态区的划分缺乏分子证据。
In chapter 5, the concept of zero-span tension known in papermaking area is for the first time introduce to wood science area to explore in-tree variation of longitudinal tensile strength of tracheids and its main influencing factors. In chapter 6, composite micromechanics and classic laminated theory are used to make a comprehensive and detailed analysis of the main influencing factors of mechanical properties of tracheids cell wall. Some experimental results acquired in the foregoing chapters are explained successfully. Results were summarized as follows: Mechanical characteristics of wood at micron scale: 1 At micron scale, the longitudinal mechanicai behavior of wood microtome section differs greatly from that of wood with normal size.
论文的第2章首先研究了微米尺度下木材的力学特性，为后面运用木材微切片拉伸技术奠定一定的理论基础；在第3章，首次考虑到了微米尺度下木材力学性质的尺寸效应，并运用木材微切片正常间距拉伸技术研究了管胞纵向弹性模量的株内变异规律；在第4章，首次利用纳米压痕技术中最新发展起来的连续刚度测量法直接在管胞细胞壁上进行纳米级的压痕实验，测量次生壁S〓层的纵横向弹性模量和硬度，从而把细胞壁力学的研究提高到一个更高的水平；在第5章，首次把造纸领域的零距拉伸技术引入木材科学研究领域，研究了管胞纵向抗拉强度的株内变异规律及其主要影响因素；第6章则运用复合材料细观力学的基本理论和经典层板理论对影响细胞壁力学性能的主要因素进行了全面而系统的分析，并为前几章的一些实验结果提供理论上的解释。
The mesh-based mobile ad-hoc network has been verified to be more efficient than the tree-based one. But the mesh-based ad-hoc network has a big challenge that many control packets would be generated in the large-scale wireless network.
在此之前，随意无线网路应用於mesh-based，已被证实比tree-based更能带来好的效能，但mesh-based中大多会出现过多控制封包的问题，於大型随意无线网路下此现象更为严重。
Gingko festival period, generally must conduct activities and so on forum, technical market, product transaction, information issue, project discussion, introduction of talent as well as large-scale theatrical performance, promotes Taixing and the outside exchange communication, the Taixing person generally has sentiment of the respect to the gingko, everybody deeply loves this to bring happiness and the propitious tree for the hometown!
银杏节期间，一般都要举办论坛、科技市场、产品交易、信息发布、项目洽谈、人才引进以及大型文艺演出等活动，以促进泰兴与外界的交流沟通，泰兴人对银杏都普遍有崇敬之情，大家都热爱这个为家乡带来幸福与吉祥的树！
This paper deals with some research based on traditional fault tree analyzing method. Our work can be described as the following: First, we introduce a new analyzing method which integrates the fault tree and FMECA (Fault Models、Effect and Criticality Analysis). We also analyzed the proper time to integrate these faults and FMECA, presented a new idea of equipment functional level based integrating point; Second, there are many factors in large-scale complex system that restrict each other and affect each other. Such restrictions in some degree affect the reliability of the whole system. We presented a method of fuzzy fault tree based on revise-factor according to the theory of fuzzy integrated evaluation model. This method can discribe the characteristics of system more effectively than fuzzy fault tree based on bottom event probability distributing; Finally, we applied the method of fault tree analysis based on revise-factor on system reliability of a produce system.
本文在基于传统故障树分析方法的基础上主要进行了如下的研究工作：论文首先提出了基于故障树分析方法和FMECA（Fault Models、Effect and Criticality Analysis：失效模式效应和危害度分析）分析方法相结合的分析方法，并分析了两者在进行可靠性分析时最佳的集合时机，提出了基于设备级功能点的新方法，为实际应用提供了参考；其次，由于大型复杂系统中存在大量的相互制约、相互影响的各类事件，难以精确地描述之间的关系，而且这样的制约在很大程度上影响系统的整体可靠性，基于这样的系统特征，根据模糊综合评判相关理论，提出了基于修正因子的模糊故障树分析方法，这种方法相比于基于底事件概率分布的模糊故障树分析方法更能有效地表征系统特征，对模糊故障树分析方法进行了有效的改进；最后，应用基于修正因子的模糊故障树分析方法对某生产系统进行系统可靠性研究，有效地提高了分析结果的准确性。
The conventional spatial index does not support these two features. A new spatial index called MSCR-tree (Multi-Scale Compressed Hilbert R-tree) was proposed in this paper. This new structure provided higher searching efficiency by using data compression and linearization of spatial elements.
深入分析了多种空间索引结构的特点，提出一种新的空间索引结构——MSCR树索引结构，该结构将多级地图中的空间元素线性化，同时以压缩的方式存储空间元素外包矩形数据以提高数据读写效率。
The conventional spatial index does not support these two features. A new spatial index called MSCR-tree (Multi-Scale Compressed Hubert R-tree) was proposed in this paper. This new structure provided higher searching efficiency by using data compression and linearization of spatial elements.
深入分析了多种空间索引结构的特点，提出一种新的空间索引结构－MSCR树索引结构，该结构将多级地图中的空间元素线性化，同时以压缩的方式存储空间元素外包矩形数据以提高数据读写效率。
The paper summarizes how the growth and development of tree trunk and branch, crown of tree and phyllome influence the limit of extent of space, the scale of space and the shape of space in landscape architecture.
面对这样的矛盾，本文从植物个体和群落生长习性及环境因子的作用的角度，根据植物生长过程中植物个体和群体在大小和外形上的生长演变规律，总结出植物生命周期内枝干、树冠、叶幕的生长对园林空间的围合感、郁闭度、尺度、形态的影响规律。
A combined optimization decision tree algorithm suitable for a large scale and high dimension data-base is presented.
提出了一种适合于大规模高维数据库的组合优化决策树算法。
At last, aimed at the stochastic system in which the uniform target at the same periods is observed by sensors possessing different characters at multiple scales, we present a method of the multiscale representation based on unregular tree. We develop the multiscale stochastic model based on scale sequence at odd- and even-numbered scale and on different order trees.
针对不同尺度上具有不同特性的传感器在相同周期内对同一目标观测的动态系统，给出了一类系统基于不规则树结构的多尺度表示方法，并建立了基于尺度序列奇偶相间阶树、不同阶树的多尺度动态模型。
Large scale power transformer (LSPT); Fault tree analysis (FTA); Computer-aided analysis;
大型电力变压器；故障树分析；计算机辅助分析；