點群對稱 的英文怎麼說

中文拼音 [diǎnqúnduìchèn]
點群對稱 英文
point group symmetry
  • 點 : Ⅰ名詞1 （液體的小滴） drop （of liquid） 2 （細小的痕跡） spot; dot; speck 3 （漢字的筆畫「、」）...
  • 群 : Ⅰ名詞（聚在一起的人或物） crowd; group Ⅱ量詞（用於成群的人或物） group; herd; flock
  • 對 : Ⅰ動詞1 （回答） answer; reply 2 （對待; 對付） treat; cope with; counter 3 （朝; 向; 面對） be tr...
  • 稱 : 稱動詞（適合; 相當） fit; match; suit
  1. In 1990s based on the eigenfunction method of representation theory of groups, a new method, the symmetrized boson representation ( sbr ) method, was brought forward

    90年代，陳金全等人在點群的表示理論上提出了一種新的方法，對稱化玻色表象方法（ sbr ） 。
  2. Consisting of the protracting graph of hydrogen - like atom ' s angle distributing, computer simulation of the symmetry of molecular orbital and chemical reaction mechanism, showing the molecular point group and symmetry element, computer simulation of molecular vibration, bravias ' s crystal lattice and their transforming, extracting of plane periodic lattice, extracting of solid periodic lattice, close packing of isometrical pellet and the structure of simple mental substance, close packing of unequal pellet and crystal structure of representative ionic crystal, computer simulation of phase analysis by x - ray diffraction

    內容包括類氫原子角度分布圖的繪制，分子軌道對稱性和反應機理的微機模擬，分子點群和對稱元素顯示，分子振動運動的微機模擬，布拉維晶格和晶格轉化，平面點陣抽取，立體點陣抽取，等徑網球的密堆積和金屬單質結構，不等徑圓球密堆積和典型離子晶體結構， x射線多晶衍射的微機模擬十個子模塊。
  3. Symmetry and matrix representation of octagonal point groups in quasicrystal

    準晶體中八方晶系點群的對稱性與矩陣表示
  4. Hi the aspect of symmetry analyzing to the hopfield model neural network with hebbian learning, we study on the dynamical behavior of the state space under the action of isometric transformation group g = z2 ? n, and prove the invariant property of the energy orientation ? / / " ) of the state space under the action of g. we find that the symmetry relationship of the network is sx - sw = sh when the active function of the neuron is odd, where sx is the symmetry of the patterns set x under hebbian learning rule, sh is the symmetry of the network and sw is the symmetry of the weight matrix w of the network

    ） s _ n為手段，研究了網路狀態空間在群g作用下各點的運動情況，證明了群g作用下的不變性。證明了當神經元的激活函數f為奇函數時， hebb法則下存儲樣本集x的對稱性s _ x 、網路對稱性s _ h以及連接矩陣對稱性s _ w三者之間滿足s _ x = s _ w = s _ h的關系；同時，我們還證明了：網路穩定態集vf同一s _ h軌道中的兩個穩定態的動力學行為（能量和吸引域大小）相同；兩個等距網路h和h 1 = g ? h ， （ ? ） g （
  5. In the rear of the group, ilya andreitch was nodding approval ; several of the audience turned their shoulders briskly to the orator at the conclusion of a phrase and said : thats so, thats so, indeed

    伊利亞安德烈伊奇在那個圈子的人群後面頻頻點頭稱贊在那個人說到最後一句話的時候，有幾個人猛地轉身對著演說的人說：
  6. The traits of the two kinds of lattice determine which method we use to study it. the site - block method is often for transitionally invariant lattice and decimation for fractals

    這兩種晶格的特點也就決定了在重整化群計算時選取什麼樣的粗粒化方法，平移對稱晶格一般採用自旋?元塊法，分形晶格採用格點消元法。
  7. Every eye then sought some other eye in the crowd, and gleamed at it approvingly ; and heads nodded at one another, before bending forward with a strained attention

    每一雙眼睛都轉向人群中的另一雙眼睛，稱許地向對方眨眨眼，點點頭，又再向前望去，聚精會神地聽著。
  8. It ' s a general method to construct the symmetry adapted bases of point groups. it has the advantage that the algebraic solutions of point groups can be obtained and the solutions are independent of representation space

    它是尋找點群不可約表示的一般方法，不依賴于具體的表示空間，可以得到點群表示的代數解，特別適用於構造分子的對稱基。
  9. The fundamental theoretical framework of this dissertation is the " stimulus - response " model of psychological behaviorism. the author applies this model into the apparel - buying behavior and proposes the " systematical integrated model " in the apparel consumption decision - making. the author tends to find out the correspondent relationship between the different buying behaviors and their characteristics through the newest technique of data mining - - hybrid machine learning ( hml ). therefore, three sub - models on apparel consumption will be established

    本研究的立足點是心理學行為主義學派「刺激? ?反應」理論在服裝消費行為決策過程中的延伸，並在購買者行為模式的基礎上提出了服裝消費決策行為系統整合模型，筆者試圖通過系統整合的思想，採用數據挖掘的最新技術? ?混合機器學習（ hybridmachinelearning ，簡稱hml ）力圖找出具有不同購買反應的人群特徵的對應關系，即通過hml對所採集的數據庫的運行及其分析，構建上海地區服裝消費在「購買產品及其數量選擇」 、 「購買地點選擇」和「購買者確定」三個子模型，從而勾勒上海家庭服裝消費決策行為系統整合模型。
  10. It shows at the same time that there is too much speculation and individual investors in chinese securities markets. all of these 4 points make herding probably

    中國證券市場由於存在政策干預頻繁，信息不對稱嚴重，以個人投資者為主，投機盛行等特點，為羊群行為的產生提供了適宜的環境。
  11. The relationship of ethnic group, national relationship and social relationship are multidirection, unsymmetry and dynamic

    族群關系、民族關系與社會關系的關系具有多向性、非對稱性和動態性的特點。
  12. The architecture applies quantilized trade - based credit scheme, which easily solve the problems like asymmetry of interest and collusion that are difficulties for reputation - based schemes. moreover, the monetary - like trust scheme may smooth the deployment of the future commercial p2p applications. the architecture first groups the peers, according to the underlying topology information, into cc ( candidate community ) and then groups the peers that are within the same cc into the ibc ( interest - based community )

    本課題價值還在於:體系架構設計基於擴展的gnutella協議之上，便於在現有的系統上進行快速擴展應用;採用了基於交易的量化的信譽方案，既可以解決傳統的基於名譽的信任方案所難以處理的非對稱興趣問題和合謀問題;同時採用了接近現實世界貨幣體系的量化方案，以便於今後商業化p2p應用系統部署的平穩過渡;體系架構將節點根據拓撲信息劃分成不同區域的候補群體cc （ candidatecommunity ） ，並在實際運行中在cc的基礎上形成不同興趣的ibc （ interest - basedcommunity ）群體。
  13. Zinc oxide ( zno ) is a wide band gap ( 3. 4ev ) semiconductor with the hexagonal crystal structure ( wurtzite type ). zno thin films with the c - axis orientation perpendicular to the substrate show excellent piezo - electrical properties and are widely used in piezo - electrical filed. and the dense anjd uniform surface of the films is required when zno thin films are used as integrated functional films

    Zno屬於六方晶系6mm點群，晶體在c軸垂直面上的電性和彈性都是對稱的，因而c軸擇優取向的多晶薄膜能夠具有單晶那樣的壓電性和光電性質，而具有平整均勻的表面形貌則是zno薄膜作為一種集成功能薄膜應用性能的保證。
  14. The mrci program based on hole - particle symmetry has been parallelized and tested on a ia cluster consisting of 12 nodes

    設計了基於空穴-粒子對稱的并行化組態相互作用程序， ?在一個有12個結點的計算機集群上測試了程序的運行。
  15. But, pso convergence ' s speed become slow in latter iterative phase, and pso is easy to fall into local optimization. at present, some scholars improve base pso mostly using 3 methods : disperse algorithm, increase convergence speed, enhance particle ' kinds. in the paper, i put forward 2 methods aiming at local best resutl but not whole best result. i modify base pso using the last method. some scholars put forward times initializations, so i select best result after circulating some times to be a parameter of formula. first, put particle into some small region, and ensure every region having one paticle at least. second, every region ' s particle has probability transfer other regions. although increase running time, enhance particle ' kinds, decrese the probability of convergence far from whole best result. nerms ( network educational resource management system ) is one of the research projects in the science and technology development planning of jilin province. the aim of nerms is to organize and manage various twelve kinds of network educational resources effectively so that people can share and gain them easily and efficiently, so as to quicken the development of network education

    但粒子群演算法仍存在如下不足:首先在多峰的情況下，粒子群有可能錯過全局最優解，遠離最優解的空間，最終得到局部最優解;其次在演算法收斂的情況下，由於所有的粒子都向最優解的方向群游，所有的粒子趨向同一，失去了粒子間解的多樣性，使得後期的收斂速度明顯變慢，同時演算法收斂到一定精度時，演算法無法繼續優化，本文對原始粒子群演算法提出了二點改進方案: 1 .演算法迭代到一定代數后，把此時找到的全局最優解當作速度更新公式的另一參數（本文稱之為階段最優解）再進行迭代; 2 .每次迭代過程中除最優解以外的每個粒子都有一定概率「變異」到一個步長以外的區域，其中「變異」的粒子在每一維上都隨機生成一個步長。
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