系統演化樹 的英文怎麼說

中文拼音 [xìtǒngyǎnhuàshù]
系統演化樹 英文
phylogenetic tree
  • 系 : 系動詞（打結; 扣） tie; fasten; do up; button up
  • 統 : Ⅰ名詞1 （事物間連續的關系） interconnected system 2 （衣服等的筒狀部分） any tube shaped part of ...
  • 演 : 動詞1 （演變; 演化） develop; evolve 2 （發揮） deduce; elaborate 3 （依照程式練習或計算） drill;...
  • 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...
  • 系統 : 1. （按一定關系組成的同類事物） system 2. （有條理的;有系統的） systematic
  • 演化 : evolution
  1. Phylogenetic analysis surports that anseranas should be placed in monotypic family anseranatidae, and the whistling ducks and the white - backed duck should be separated from subfamily anserinae and placed them into family dendrocygnidae. the family anatidae could be classified into two subfamilies, anserinae and anatinae. the results approve that the swans should be put into the tribe cygnini of subfamily anserinae as suggested by livezey ( 1996, 1997b ) and the shelducks should be placed in the tribe tadornini of subfamily anatinae, therefore, our results do not support sibley and ahlquist ' s ( 1990 ) establishment of the subfamily cygninae and placing the shelducks in the tribe anserini

    研究結果表明： 1 ）雁形目鳥類12srrna基因有較多的堿基插入和缺失，堿基轉換數高於顛換數； 2 ）贊同將鵲鵝（ anseranas ）置於鵲鵝科（ anseranatidae ）中，樹鴨（ dendrocygna ）應從雁亞科（ anserinae ）中獨立出來設立樹鴨科（ dendrocygnidae ） ，白背鴨（ thalassornis ）隸屬于樹鴨科； 3 ）鴨科（ anatidae ）可分為雁亞科和鴨亞科（ anatinae ） 2個亞科，不贊同sibley & ahlquist （ 1990 ）設立天鵝亞科（ cygninae ）及將麻鴨歸入雁族（ anserini ）的觀點，支持livezey （ 1996a ， 1997b ）的觀點建議將天鵝類歸為雁亞科天鵝族（ cygnini ） ，麻鴨置於鴨亞科下麻鴨族； 4 ）在鴨亞科內的系統發生上，潛鴨最早分歧出來，麻鴨、海中文摘要鴨及棲鴨彼此iaj的親緣關系較近；河鴨族為一單系發生群，在系統演化中形成獨立的一支。
  2. In this paper, a lot of researches and exploration are applied to studying the universality and expansibility of hardware and the arithmetic design and code optimization of software. especially, all of the following arithmetics or conceptions are worked out in the research of software design : self - adaptable compression arithmetic based on dictionary model for data collection system, similarity full binary sort tree, a optimized quick search arithmetic and an improved arithmetic of multiplication in the floating - point operation. and all of the arithmetic are designed with mcs - 51 assembly language. the quick search arithmetic, in which merits of both binary search and sequence search are used fully, are based on the specialty of preorder traversal in similarity full binary sort tree

    特別在軟體設計研究中，提出了適用於數據採集系統的數據壓縮演算法? ?基於字典模型的自適應壓縮演算法；提出了類滿二叉排序樹的定義；提出了基於類滿二叉排序樹的先序遍歷特性的最優化快速查找演算法，它充分利用了折半查找和順序查找各自的優點；提出了浮點運算乘法的改進演算法；並在mcs - 51匯編語言層次上對所有的演算法加以實現。
  3. Directed by the advance theories of sequence stratigraphy, reservoir beds sedimentology, seismic stratigraphy and petro - geology, measured by exactitude seismic procession, analysis of seismic facies, analysis of single well lithfacies and sedimentary facies, study of macro and micro character of reservoir and diagenesis, this paper study comprehensively the stratigraphy sequence, the type and distributiong of sedimentary facies, reservoir properties, the diagenesis and the evolution of pores of the 2nd and 3rd parts of pingdiquan formation of permian in wucaiwan - shishugou region in jungan basin. we can optimum seek favourable target area and apply the study results on oil field production in order to solve the difficult questions. we mainly achieve several views as follows : l ) establish the sedimential sequence framework of permian formation in studying area and delimint the jiangjunmiao formation of middle dyas series as lowstand system tract, the lower of the second part to the third part of pingdiquan formation of middle dyas series as transgressive system tract, the upper of the second part to the first part of pingdiquan formation as highstand system tract

    以層序地層學、儲層沉積學、地震地層學、石油地質學的先進理論為指導，以地震資料精細目標處理、地震相分析、單井巖相分析、沉積相分析、宏觀和微觀儲層特徵分析及成巖作用研究為手段，對準噶爾盆地東部五彩灣? ?石樹溝地區二疊系平地泉組二、三段的地層層序、沉積相類型及展布、儲層物性特徵、成巖作用及孔隙演化進行綜合研究，優選出有利勘探區帶，並將研究結果應用到生產中，解決生產中的難題，主要取得了以下幾點認識：建立了工區內二疊系沉積層序框架，把中二疊統將軍廟組地層劃為低水位體系域，中二疊統平地泉組二段下部三段地層為水進體系域，二段上部一段地層為高水位體系域。
  4. This paper makes researches on pdm ' s kernel function - pcm ( product configuration management ) under the conditions of autocad and low - price dbms witch could be acceptable in our middle or small factories. this paper mainly discusses the recursive query algorithm based on general database witch is offered in oracle, the problem of the automatic bom maker for autocad and conversion from bom to product structure trees. thus the data of autocad files could go into erp ( enterprise resource plan )

    本文從pdm理念出發，在我國中小企業普遍能接受的autocad和低價位數據庫管理系統的平臺條件下，對pdm的核心技術模塊pcm （產品結構管理）的實現進行了研究，重點解決了在一般數據庫中實現數據庫系統oracle中具備的遞歸查詢演算法， autocad環境下bom表的自動生成技術，以及bom表向產品結構樹的轉化問題，從而使cad數據通過bom表的橋梁作用進入erp （企業資源計劃）系統。
  5. Furthermore, combined the execution rule of petri nets and the search algorithms of tree, an innovative scheduling method is proposed by applying a heuristic search to the state space of petri nets. specially, by introducing heuristic function, depth - first and width - first is mixed in the search course ; thereby a feasible solution can be generated in a reasonable amount of time

    其次，在所得柔性製造系統petri網模型的基礎上，通過把樹的遍歷演算法與petri網的運行規則相結合，提出了一種啟發式調度演算法，通過在演算法中引入反映問題特徵的啟發函數，把廣度優先和深度優先搜索有機地結合，使得該演算法能夠在合理的時間復雜度內得到滿足精度要求的優化調度。
  6. Establishing 3 - d terrain models with vector contour lines and elevation terrain models with the help of the determination of space corresponding relations between contour lines, tile operation and branch operation. explanation of real - time reflection of terrain models, including three algorithms in lod technology, compared with quadtree algorithm, roam algorithm and the algorithm based on the intermediate belt, to show the advantages and disadvantages of the different situations of the terrains, so as to find out the right algorithm, the quadtree algorithm. developing and implementing the fast demonstration on the vc platform with three - dimentional visualization techniques, such as vrml and opengl, providing a persuasive argument for the research

    論文首先概括介紹了用等高線快速建立3d地面模型和顯示的相關技術，並論述了課題研究的背景和選題依據;其次，論文闡述了如何對等高線數據進行預處理，提出了有效的得到矢量化等高線的方法;再次用矢量化的等高線數據建立三維地面模型，通過等高線間的對應關系的確定、瓦片操作、分支操作建立地面的高程模型;然後論文對地面模型的實時渲染問題進行了深入闡述，主要是從lod技術的三種演算法著手進行研究，通過對比四叉樹演算法、 roam演算法和基於過渡帶演算法對不同種情況的地面數據顯示的優缺點，再結合本系統的地形數據的特點選擇了適合的演算法:四叉樹演算法;最後，用vrml和基於opengl的三維可視化技術在vc平臺上開發並實現了地形的三維快速顯示系統，為論文的研究內容提供了有力的論證。
  7. To be dealed agaist extended data, this thesis has improved on and come true arithmetic of time sequence model, and amended conventional decision tree arithmetic, introduced the decision tree arithmetic for extended data, namely threshold value control approach. according to threshold value and concept hierarchy, threshold value control approach can set up the concise and statistic classification tree. at the same time, based on the theory of the concept lattice, this thesis introduces the arithmetic of mining association rules based on quantified concept lattice reduced by uncertainty coefficient

    針對泛化后的數據，本文改進並實現時間序列模式發現演算法；修改了傳統的決策樹演算法，提出了一種適合於泛化數據的決策樹構造演算法：閾值控製法，閾值控製法通過閾值和概念層次的控制，可以建立簡潔明了、具有統計意義的分類樹；在概念格理論基礎上提出了基於不確定系數法挖掘關聯規則的演算法。
  8. 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。
  9. To the former one, since most previous work depends on the signature of nodes, which would be costly to be computed, a new way is proposed to discriminate those nodes that have the same paths in the intrinsic properties of the xml document. towards this end, the thesis introduces a series of notions related to the key path, which make the change detection of xml document easier. based on the notions, a change detection algorithm named kf - diff is presented, which is tailored to unordered trees

    對於前者，針對已有演算法大多依賴非常耗時的結點簽名，並且演算法過程復雜的問題，本文提出了一種文檔變化檢測的處理方法，該方法利用文檔固有信息建立特徵參照體系，通過特徵路徑相關的一系列概念的引入，將傳統標號樹匹配問題轉化為無重復路徑的標號樹匹配問題，有效地解決了路徑等價類比較的問題，簡化了xml文檔的比較。
  10. At last, according to the characteristic of report generator in tribon, we established the product structure managing system, studied the algorithm for the generation of the product structure tree and generated the visual product structure tree, and have an eye on the management of bom, taking accout of the correctness of the information of bom, we adopted the method of from top to bottom or from bottom to top to provide information ; and designed 6 bom to accomplish the function

    最後，根據tribon系統中報表生成器的特點，建立了產品結構管理系統，研究了產品結構樹生成的演算法，生成了可視化產品結構樹。並對產品物料清單bom的管理進行了研究，考慮到bom信息的準確性，採用了bom以自頂向下分解的形式或是以自底向上跟蹤的形式提供信息；並設計了物料清單bom的六種形式來實現其功能。
  11. Main contents list as follows : 1. eai communication mechanism of vrml 2. feature based model restructure 3. mapping algorithm of model 4. assembly processing analysis 5. creating mechanism of assembly model 6. optimization of model 7. assembly constraint relations processing prototype system of web - based interactive virtual assembly platform is developed based on studies above, and its functions, such as data management of network virtual product, definition of assembly tree structure, control of assembly, etc, are implemented and have gotten well engineering application effect

    課題重點研究了該平臺的體系結構及支持網路化虛擬裝配中的相關關鍵技術，包括vrml的eai （ externalauthoringinterface ）通信機制、基於特徵的模型重構、模型的映射生成演算法、裝配過程分析、裝配模型的創建機制、模型的優化處理、裝配約束關系的處理，並在此基礎上開發了一個基於web的互動式虛擬裝配平臺的原型系統，實現了網路化虛擬產品的數據管理、裝配樹結構的定義以及裝配控制等功能，取得了較好的工程應用效果。
  12. Based on the summarization of former research, some advanced or new algorithms on data processing are provided in this paper. the subarea path planning rules and algorithm is studied in detail. and the solidification shrinkage compensation of curable resin is discussed as well

    本文在系統總結前人關于這方面研究成果的基礎上，結合臺式低成本普通紫外光固化快速成型工藝的一些特殊要求，對其中的一些演算法進行了改進，詳細討論了分區掃描路徑規劃的規則和演算法，並提出了輪廓平行掃描的基本實現方法，探討了光敏樹脂固化收縮的工藝補償方法。
  13. Some central musa ( including 46 cultivars and 14 wild species ) were tested using aflp molecular markers with two pairs of primers ( e - acc / m - cat and e - acc / m - cag ). one aim of this research is to ascertain the relationships between wild species and cultvars, cultivars belong to the same group in simmonds system. another aim is to provide molecular basis for musa systemetics and banana evolution route research

    作者於2001年4月2002年5月以國家果樹種質廣州香蕉圃和華南農大香蕉品種園的主要芭蕉屬植物為研究對象，應用aflp分子標記技術探討野生蕉種間、野生蕉與栽培蕉、栽培蕉各類型之間以及各類型內部品種（系）之間的親緣關系，為香蕉的演化途徑研究、香蕉種質資源的評價利用、品種鑒定以及在分類上存在爭議的個別種質的系統學劃分等提供分子水平上的依據。
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