樹形表示法 的英文怎麼說

中文拼音 [shùxíngbiǎoshìfǎ]
樹形表示法 英文
tree representation
  • 樹 : Ⅰ名詞1 （木本植物的通稱） tree 2 （姓氏） a surname Ⅱ動詞1 （種植; 栽培） plant; cultivate 2 （樹...
  • 表 : Ⅰ名詞1 （外面;外表） outside; surface; external 2 （中表親戚） the relationship between the child...
  • 示 : Ⅰ動詞（擺出或指出使人知道; 表明） show; indicate; signify; instruct; notify Ⅱ名詞1 [書面語] （給...
  • 法 : Ⅰ名詞1 （由國家制定或認可的行為規則的總稱） law 2 （方法; 方式） way; method; mode; means 3 （標...
  • 表示 : show; express; mean; indicate; expression; presentation; signifying; remark; representation
  1. A binary tree - based and dyadic indicated codification method is proposed in the digital watershed model ( dwm )

    摘要在數字流域模型中提出了一種基於二叉樹理論，並以二元形式表示的河網編碼方法。
  2. Aiming at this problem, the main research issues and achievements in this paper are as follows : bi - directional data transformation between rdb and xml with semantic constraints preserved for most of existing researches on static data transformation between xml and rdb, dtd is taken as the schema description language for xml, and the semantic constraints are often lost during the transformation process. to overcome these disadvantages, the author adopts xml - schema, a standard schema description language proposed by w3c to replace dtd, as the description method owing to its more powerful functions than dtd, and of course with the syntax much more complicated. after analyzing the constraints characteristics in both xml - schema and relational schema, a semantic constraints - preserved algorithm is proposed which can realize the bi - directional schema mapping between rdb and xml through a formalized description of xml based on regular tree and a general expression for relational schema based on direct graph approach

    保留語義約束的xml與rdb雙向靜態數據轉換技術現有研究大多採用dtd （ documenttypedefinition ，文檔類型定義）作為xml的模式描述語言，並且在模式映射過程中丟失語義約束信息，本文分析了xml - schema （ xml - schema採用與dtd完全不同的語法，數據描述能力更強同時也更為復雜，已被w3c確定為替代dtd作為xml模式描述語言的標準）及關系模式的語義約束特徵，通過基於正則樹的xml形式化描述方法以及基於有向圖的一般關系模式表示方法的研究，建立保留語義約束的xml - schema與關系模式的雙向模式映射演算法，實現了xml與rdb的雙向數據轉換，較好地解決了xml與rdb在靜態數據轉換層面的數據集成問題，可有效滿足企業大量rdb數據面向xml的發布以及與日俱增的xml數據存入rdb的應用需求。
  3. We analyze the assembly model and propose a mathematics model and tree - representing model of the assembly who not only has a small data size, but also can be manipulated easily. this thesis not only gives the virtual representing concept the instance representing one, but also defines the concept of assembly constraint such as coupling, being alignment, being coaxial and being equidirectional. based on such concepts, a revised newton - raphson iterative algorithm is proposed, which can deal with the singularity and ill - condition of jacobi matrix

    首先分析了裝配體的模型問題，提出了裝配體的數學模型及樹形式表示的裝配體表示模型，模型具有數據量小、操作簡單的優點：文章對所涉及的約束諸如耦合、對齊、同軸、同向的裝配體位置描述概念進行了定義，引入了裝配約柬概念，從而提高了裝配設計效率；在此基礎上，文章討論了裝配約束的求解方法，提出了newton rapson迭代法的改進演算法，使得系統能更好地處理jacobi矩陣的奇異和病態的情形。
  4. The results indicated that the dimension, shape and purity of base material could meet the functional demand of solid lubricant ; the thermal decomposition temperature of ptfe resin exceeds 400 c, but organic and inorganic packing filler added in ptfe made the water absorption rate of composite material increased, melting temperature and decomposition temperature decreased, in the meanwhile oxidative decomposition reaction was accompanied ; polar groups such as c = o, c - o - c and so on in the carbon fiber surface is advantageous to increase compatibility with other components and interlayer shearing strength ; uniform design experimental method could help to find the relationship between formula and frictional property by relatively small tests. the developing trend of each formula ' s friction coefficient could be showed by fitting curve ; the friction coefficient with no copper powder or graphite in formula was relatively big. this fact showed that copper powder and graphite should be used cooperatively ; it was found that when the ratio of copper powder to graphite by weight is 15 : 60, 30 : 30 - 40 and 60 : 15 - 30 respectively, the friction coefficient was relatively small. the degree of crystallinity of pure ptfe reached maximum by air cooling and the abrasion loss also reached maximum among three ones ; at the same time, the abrasion loss of solid lubricant sample was also the biggest among three ones ; when solid lubricant matched with 45 # steel axle or gcrl5 steel axle, lubricant transfer film could be formed on metal surface, thus direct contact between the surface of metal friction pair rings was reduced. their working life was elongated extremely ; there was mainly much graphite, a little ptff, moo3, feso4, cus and so on in lubricant transfer film

    試驗結果表明：所選原料的尺寸、形狀及純度可滿足固體潤滑劑的性能要求；聚四氟乙烯樹脂熱分解溫度超過400 ，但在ptfe中加入無機填料會使復合材料吸水率提高，熔融溫度及分解溫度降低，且伴有氧化分解反應；碳纖維表面含有c = o及c - o - c等極性基團，有利於提高其與其它組分的相容性，提高層間剪切強度；均勻設計試驗方法能夠用較少的試驗次數找出配方與摩擦性能間的關系，擬合曲線基本能表示各配方的摩擦系數發展趨勢；配方中不加銅粉或不加石墨，其摩擦系數均較高，說明銅粉和石墨應該配合使用；當銅粉15份、石墨60份時，銅粉30份、石墨30 - 40份時，銅粉60 、石墨15 - 30份時，摩擦系數均具有較低值；純聚四氟乙烯樹脂在空氣冷卻時結晶度最大，磨損量也是三者中最大的；同時，固體潤滑劑試樣在空氣冷卻時的磨損量也是三者中最大的：不論是固體潤滑劑與45 #鋼軸配副或是固體潤滑劑鑲嵌入銅套后與gcr15鋼軸配副，在金屬表面均可形成潤滑轉移膜，從而減少金屬摩擦副表面間的直接接觸，大大延長其使用壽命;轉移膜中主要含有較多的石墨、少量聚四氟乙烯、 moo 。
  5. To control the process of adding all the methods and classes described in the last section, the jibx binding compiler first creates an internal representation of each binding in the form of a code generation tree structure

    為了控制上一節中描述的所有方法和類的添加過程， jibx綁定編譯器首先用代碼生成樹結構的形式，創建了每個綁定的內部表示形式。
  6. The analysis of these two sequences and reported sequences ( three families, 15 sequences in total ) by nj method and the simplest principle shows, the evolutionary trees established by these two methods are consistent and the sequences of the same family constitute one group. the sequences of thaliana and the sequences of brassicaceae each makes up a sub - group in it. the sequences of violaceus distribute in brassicaceae sub - group and this phenomena shows that the relationship is very near

    我們對這些序列與已發表的相應序列（合計3個科， 15個序列）用nj法和最簡約性分析，結果表明：由兩種方法構建的進化樹是一致的，同一科的序列形成一組:在十字花科組的分之圖中，來自於擬南芥屬的序列與來自於蕓墓屬的序列又各自形成亞組;來自於諸葛菜屬的序列分佈在蕓墓屬的分之圖中，揭示出諸葛菜屬與蕓矍屬有著極其近的親源關系。
  7. Abstract : biological invasions are a continuous feature of a non - equilibrium world, ever more so as a result of accidental and deliberate introductions by mankind. while many of these introductions are apparently harmless, others have significant consequences for organisms native to the invaded range, and entire communities may be affected. here we provide a survey of common models of range expansion, and outline the consequences these models have for patterns in genetic diversity and population structure. we describe how patterns of genetic diversity at a range of markers can be used to infer invasion routes, and to reveal the roles of selection and drift in shaping population genetic patterns that accompany range expansion. we summarise a growing range of population genetic techniques that allow large changes in population size ( bottlenecks and population expansions ) to be inferred over a range of timescales. finally, we illustrate some of the approaches described using data for a suite of invasions by oak gallwasps ( hymenoptera, cynipidae, cynipini ) in europe. we show that over timescales ranging from 500 10000 years, allele frequency data for polymorphic allozymes reveal ( a ) a consistent loss of genetic diversity along invasion routes, confirming the role of glacial refugia as centres of genetic diversity over these timescales, and ( b ) that populations in the invaded range are more subdivided genetically than those in the native range of each species. this spatial variation in population structure may be the result of variation in the patchiness of resources exploited by gallwasps, particularly host oak plants

    文摘:生物入侵是不均衡世界的一個永恆話題，尤其是當人類有意或無意地引入物種后.很多引入顯然是無害的，但另外一些則有著嚴重的後果，會給入侵地的生物以至於整個生物群落造成影響.本文總結了分佈區擴張的常見模式，概述了它們對遺傳多樣性和種群結構式樣所造成的影響.描述了如何根據以一批遺傳標記所得到的遺傳多樣性式樣來推斷入侵途徑，來揭示伴隨擴張選擇和漂變在形成種群遺傳樣式中的作用.本文對日益增多的群體遺傳學方法進行了總結，這些技術可以用來在不同的時間尺度上推斷種群規模所發生的巨大變化（瓶頸效應及種群擴張） .最後，我們以歐洲櫟癭蜂（膜翅目，癭蜂科，癭蜂族）一系列入侵的數據為例對一些方法進行了說明.從500 10000年的時間尺度上，多態的等位酶位點上等位基因頻率的數據表明: 1 ）遺傳多樣性沿入侵路線呈不斷下降的趨勢，支持了冰河期避難所作為遺傳多樣性中心的作用; 2 ）入侵地區的種群與該物種原產地的種群相比，遺傳上的分化更為強烈.這種種群結構在空間上的變異可能是被櫟癭蜂開發的資源尤其是櫟樹寄主在斑塊上出現變異的反映
  8. The core contents of digital power transmission network are to build the true three dimension scene of objective region, to search for the transmission equipments and to operate them in the scene interactively. according to the two main kinds of three dimension digital models ( earth surface model and transmission equipment model ), this thesis describes a simplifying method depended on view - point : it accomplishes displaying and flying over a large area of true earth surface with level of detail model based on block - binary tree. and it realizes " the efficient display of abundant data of equipment models and interactive management by the method of combination of models and images

    構建目標區域的真實三維場景，並在場景中對輸電設備進行查詢和交互操作是數字輸電網路的核心內容，本文針對數字平臺中兩種主要的三維數據模型? ?地表模型及輸電設備模型提出了基於視點的簡化方法：用塊? ?二叉樹結構的動態細節層次模型解決了大區域真實地形的顯示及漫遊方法；用失柵結合的方式實現了對海量設備模型數據的高效顯示及交互管理的功能。
  9. Firstly, this paper discussed failure mechanisms, failure reasons and precautions of explosion, corrosion, abrasion, deformation and leakage etc by studying the rationales of internal and overseas failure analysis for pressure vessels. secondly, each fault tree of failure analysis was built and the knowledge base of failure analysis for pressure vessels was made by combining production rule with framework in the end

    本文借鑒國內外的壓力容器失效分析的基本原理，研究了破裂或爆破失效、腐蝕失效、磨損失效、變形失效、泄漏失效等失效機理、失效原因及預防處理措施，進而建立其各自相應的失效分析故障樹，最後通過產生式系統與框架系統相結合的知識表示方法建立了壓力容器失效分析知識庫。
  10. Existent automatic grading model of programs can not deal with the programs with structural body. in this paper, we study the syntax and concept of structural body based on an existed model, and improve the original model in the following aspects : increasing the middle representation form of structural body in analysis of morphology and syntax and system dependence graph and abstract syntax tree, adding standardization rules, mainly including type definition, nesting structure, initialization, function invocation, renaming and sequence of program sentence, besides standardization rules of bit operation and program with enumeration, enhancing the function of inspecting syntax error and improving matching strategies

    本文在原有的編程題自動評分模型的基礎上，對結構體的語法結構和實現原理進行研究，並在以下幾個方面完善原有模型:在詞法和語法分析、程序的系統依賴圖建立和抽象語法樹生成三個方面增加結構體類型的中間表示形式;擴充程序的標準化規則，主要包括類型定義標準化、結構體嵌套結構標準化、結構體初始化的標準化、結構體作為函數參數時函數調用標準化、結構體變量名稱標準化、結構體語句排列順序標準化等等;另外，還增加了位運算標準化、枚舉標準化以及文件的處理;增強學生程序中語法錯誤的檢測和改進程序匹配策略。
  11. Bulk operations on a ttreeview are often painfully slow, because every time a node is referenced using an index, the ttreeview has to walk through its linked list of nodes to get to the specified index

    對一個樹開視圖控制項進行大量操作經常速度很慢，因為每一次節點都需要通過一個索引進行引用，樹形視圖控制項必須遍歷它的節點鏈表以獲到特定的索引，這個例子演示了一種解決這一問題的方法。
  12. How to rapidly stream ttreeview contents - bulk operations on a ttreeview are often painfully slow, because every time a node is referenced using an index, the ttreeview has to walk through its linked list of nodes to get to the specified index

    對一個樹開視圖控制項進行大量操作經常速度很慢，因為每一次節點都需要通過一個索引進行引用，樹形視圖控制項必須遍歷它的節點鏈表以獲到特定的索引，這個例子演示了一種解決這一問題的方法。
  13. In chapter 5, common representations of user profiles are introduced firstly, and then the representation based on huffman tree is discussed. on the base of this representation, documents filtering a

    本文分析了表示用戶個性化模式常用的幾種表示方式，並提出了一種基於huffman樹形式的個性化模式表示方法。
  14. 4. advancing a new representation of user profiles and corresponding filtering algorithm based on huffman tree how to provide users what they really want faster and more exactly is the development focus of information retrieval systems

    提出一種基於hudria n樹形式的個性化模式表示方法及相應的文檔過濾演算法如何更快、更準確的向用戶提供其所感興趣信息是當前搜索引擎系統發展的方向之一。
  15. After expounding the actual and development trend of process planning knowledge management, combining with the basic conception of it, this paper presents a classification and hierarchy model for supervising knowledge, and sets up a process planning resource knowledge base using the model ; the process planning knowledge is expressed with intelligent object representation which is synthesized rule, framework and object - oriented representation ; process planning knowledge is showed by process planning tree using the idea of intelligent object representation ; in the end, the algorithm of the inconsistency of knowledge base and integrality are also given

    本文在闡述了工藝知識管理系統的現狀及發展趨勢后，結合工藝知識管理的基本概念，提出了一種分類層次模型以組織和管理工藝知識，並據此建立工藝資源知識庫；採用產生式規則、框架表示和面向對象三者相結合的方法? ?智能對象表示法對工藝知識進行表示；並利用智能對象表示法的思想將工藝知識通過工藝知識樹的形式顯示出來；最後給出了工藝知識庫不一致檢測和完備性檢查演算法。
  16. Furthermore, good compression effectivity is presented in application to compression of pd gray intensity images. according to the research on difference degree between computational values of fractal features extracted from decoded pd images and that from original images, it is shown elementarily that the proposed method is effective for application in pd pattern auto - recognition system. ( 4 ) this paper brings forward pd pattern auto - recognition project based on the above recognition features and fractal compression of pd gray intensity images and designs the classifier with back - propagation neural network ( bpnn )

    （ 3 ）研究了局部放電灰度圖像的四叉樹分形圖像壓縮方法，通過模擬實驗證明採用本文演算法能夠獲得一定的圖像壓縮比，在局部放電灰度圖像壓縮應用中顯示了良好的壓縮效果，進一步研究了局部放電解碼圖像的識別結果與原始圖像之結果的差異程度，研究結果初步表明該方法應用於局部放電模式自動識別系統中是有效的； （ 4 ）研究了基於局部放電解碼圖像的bpnn識別方法及，通過分析對解碼圖像的識別效果，驗證了設計的系統模式識別方案的有效性，同時表明該方案能夠滿足實地局部放電模式自動識別和遠程數據通訊及自動識別的需要。
  17. 3. present corresponding database representation method for diagnostic knowledge : aimed at knowledge based on decision trees, use the parent node representation adding node state column and fault column to implement the database storage for diagnostic knowledge ; while for knowledge based on cases, the fault symptom matrix is available. 4

    診斷知識的表示方面，提出了相應的數據庫表示方法：對于基於決策樹的知識，用增加狀態數據域和結點狀態列以及故障列的雙親結點表示法，實現診斷知識的數據庫存儲：對于基於案例表示的診斷知識，以故障徵兆矩陣的形式存入數據庫。
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