空間群對稱 的英文怎麼說

中文拼音 [kōngjiānqúnduìchèn]
空間群對稱 英文
space group symmetry
  • 空 : 空Ⅰ形容詞（不包含什麼; 裏面沒有東西或沒有內容; 不切實際的） empty; hollow; void Ⅱ名詞1 （天空） s...
  • 間 : 間Ⅰ名詞1 （中間） between; among 2 （一定的空間或時間里） with a definite time or space 3 （一間...
  • 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
  • 空間 : space; enclosure; room; blank; interspace
  1. Metallothionein - ii, 6. 8kda, purified from the liver of rabbit induced by cadmium, has been crystallized in the space group p6322 using hanging drop vapor diffusion method, with unit cell parameters

    金屬硫蛋白懸滴汽相擴散法空間群晶胞參數不對稱單位中圖分類號：
  2. This paper is to study harmonic maps into symplectic groups and local isometric immersions into space forms by means of the soliton theory. by realizing an action of the rational loop group on the spaces of corrsponding solutions, we get the backlund transformation and the darboux transformation, and thereby we give the explicit construction for harmonic maps into symplectic groups and local isometric immersions into space forms via purely algebraic algorithm

    主要用孤立子理論研究到辛群的調和映射和到空間形式的局部等距浸入，通過有理loop群在其解空間上的dressing作用，給出b icklund變換和darboux變換的顯式表示，從而獲得到辛群及其對稱空間的調和映射和到空間形式的局部等距浸入的純代數構造方法。
  3. 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 （
  4. What we do at this aspect are : firstly, we describe the permutation symmetry of the structure of some special networks and the corresponding attractor sets with some geometric graphs in euclidean space, which are called attractors graph and geometrized structure graph of the networks respectively ; the geometrizing conditions are also given ; we study the dynamical behavior of the networks using the geometrized structure graph and attractors graph of the network ; moreover, we propose an approach to construct a big - size network with some small - size network with symmetry by the method of direct - sum, direct - produce and semidirect - produce. we also study the dynamical properties " relation between the big - size network and the small - size networks. all those results will provide some theoretical basis for designing a special large - scale network

    本文在這方面所做的工作如下：首次將一些特殊網路的結構和吸引子集的置換對稱性用三維歐氏空間中的一些幾何圖來表示，分別稱之為幾何結構圖和吸引子圖；給出了網路對稱性的幾何化條州即相應的對稱性群為可遷群） ：並惜助網路的幾何結構圖和吸弓吁圖分析網路的動力學性質；此外，我們提出了用簡單的具有一定對稱性的小網路按照群的直和、半直積和直積的方式組合成較大的網路的方法，探討了這些小網路和所組成的大網路的一些動力學性質的關系，如穩定態的個數、各穩定態的回憶性質等，為較大網路的設計提供一些理論依據。
  5. Linear maps preserving group inverses of matrices on symmetric matrix spaces over a field

    域上保對稱矩陣空間上群逆的線性映射
  6. 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。
  7. They are all centrosymmetry molecules. there exists three coordination modes for ligand l : chelating, monodentate, bridging. the length of each molecule is almost 4 run

    空間群，中心對稱結構，配體l有三種配位方式：螯合、橋連、單齒，分子長度將近4個納米。
  8. As a liquid, the blue phase shows the 3d - space group symmetry, just like crystals, which arouses people ' s interest

    作為一種流體，液晶藍相能像晶體一樣有三維空間群對稱性，這引起了人們的廣泛興趣。
  9. During recent 30 years, the blue phase of liquid crystal has attracted much attention. the physical nature of bpi ( the first subphase of blue phase ) and bpii ( the second subphase of blue phase ) have the symmetry of space group

    近30年來，液晶藍相受到廣泛的關注，研究表明藍相一相（ bp ）和藍相二相（ bp ）的物理性質有空間群對稱性。
  10. The text however develops basic riemannian geometry, complex manifolds, as well as a detailed theory of semisimple lie groups and symmetric spaces

    然而課程還將簡單介紹了基本的黎曼幾何和復流形的知識，並會詳細討論半單李群和對稱空間的理論。
  11. The study of the statement and extant problems in china analyzes that although china possesses a unique and rich culture resources, the people has a low awareness of the protection of the culture resources ; the distribution of the culture resources lacks competition at the international level ; the irrational distribution of the culture resources restricts the development of the culture resources. based on the above - mentioned achievements, the paper states the categories of china ' s culture markets and its consumption groups. after illustrating the statement of the market capacity of china ' s culture industry by a model, the author points out that in spite of the fast development of china ' s culture markets, the course of its development, which moves along a horizon of low level balance between supply and demand, is in a state of non - symmetry and has structural conflictions

    根據以上研究成果，本論文得出了以下基本結論：我國的文化消費由於收入水平的不同，不同的消費群體之間有著很大的差別，且區域間的文化消費不平衡，出現了由東向西的「擠壓傳遞放應」 ；我國文化產業的市場空間沒目前雖然發展很快，而且有著巨大的發展空間，但是在其發展過程中是一種低水平總體上的供求平衡，處于非對稱狀態，存在著結構性矛盾；我國居民在文教娛樂服務消費擴大的同時，其內部結構並不完全合理，這其中的消費，絕大部分是教育消費，而教育支出的過于龐大，實際上已經制約了居民的其它文化消費。
  12. The subjects to be covered include groups, vector spaces, linear transformations, symmetry groups, bilinear forms, and linear groups

    涵蓋的主題包括群、向量空間、線性轉換、對稱群、雙線性結構、線性群等。
  13. In this paper, the authors give the globally classfication of the maximal totally geodesic submanifolds with maximal rank of normal riemannian symmetric spaces by computing the fundamental group

    摘要通過計算全測地子流形的基本群，確定了緊正規黎曼對稱空間的極大的極大秩全測地子流形的整體分類。
  14. The text for this class is differential geometry, lie groups and symmetric spaces by sigurdur helgason ( american mathematical society, 2001 )

    然而課程還將簡單介紹了基本的黎曼幾何和復流形的知識，並會詳細討論半單李群和對稱空間的理論。
  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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