vector field 中文意思是什麼

vector field 解釋
矢場
  • vector : n 1 【數學】向量，矢量，動徑。2 【航空】飛機航線；航向指示。3 【天文學】幅，矢徑。4 【生物學】帶...
  • field : n 菲爾德〈姓氏〉。n 1 原野，曠野；（海、空、冰雪等的）茫茫一片。2 田地，牧場；割草場；〈pl 〉〈集...
  1. Contravariant vector field

    反變向量場
  2. The electric current density vector field also satisfies superposition principle, some applications thereof are introduced

    摘要電流密度矢量場也滿足疊加原理，給出了一些應用電流密度場疊加原理的例子。
  3. Line integral convolution ( lic ) is one of texture - based methods for vector field visualization. even in the vector direction changing sharply fields, the method can show the direction of the vector field well, and display details of the vector field better. in addition, it can fully disclose the relativity among every spot of the vector field

    線積分卷積（ lineintegralconvolution ， lic ）方法是一種基於紋理生成技術的矢量場可視化映射方法，線積分卷積法能連續反映場中各點切矢，即使在矢量方向變化很大的區域，也能揭示出矢量的方向，可以較好地表達出矢量場的細節。
  4. Reseach on maths model of two - dimension vector field reconstruction with inverse projection

    反投影重建二維矢量場的一種數學模型研究
  5. The classification of phase portraits about some hamiltonian vector field with z3 - equivariant property

    等變向量場的相圖分類
  6. Interpolation of user - provided vectors provides a smooth vector field capable of being used to guide the change of directions and scales in texture synthesis

    根據用戶在此三角網格上指定表示紋理方向和大小的矢量來插值生成矢量場，用以控制合成紋理的變化。
  7. In this paper, micro - cavity semiconductor laser ( mcsl ) with pillar vertical - cavity surface - emitting structure ( vcsel ) which has potential applications in optical communication and optical interconnect is theoretically analyzed, the calculation model that used to discuss the modal performance of rectangular columnar and cylinder vcsel with oxidized aperture is established by using vector field model. the numerical simulations in the case of cylinder structure show oscillating wavelength and threshold gain against inside and outside radius of laser, the layer refractive index and pair number of bragg mirror, thickness, position and oxidized material ' s refractive index of oxidized aperture, in detail. more practically, considering dos shell of laser as non - perfect one, or supposing that dos shell is separated from the laser, we can obtain more significative results

    本工作以矢量場模型出發，對具有誘人應用前景的柱形垂直腔面發射結構（ vcsel ）的微腔半導體激光器（ mcsl ）進行了理論分析，建立了用於分析方柱形和圓柱形結構具有氧化孔徑層的激光器的模式特性的理論模型；對圓柱形結構情況進行了數值模擬，得到了振蕩波長、閾值增益隨激光器內外半徑、 bragg反射鏡層折射率、周期數以及氧化孔徑層厚度、位置和氧化物折射率的詳細變化規律；為使理論計算更接近實際，將外加金屬包殼視為非理想導體，或將金屬包殼與激光器結構隔開，分別對這兩種情況下的結果進行了討論。
  8. Based on the theory of field and considering all of the effects from around movement objects as one object in center of mass, expressing velocity and acceleration as vector, the dissertation extends mutual action model to a new microcosmic model for non - motorized vehicle : vector field model

    根據場的理論，對非機動車受到來自周圍多個運動物體的影響綜合為處在質心位置的一個運動物體的影響，用矢量表示速度與加速度，將相互作用模型擴展為一種新的非機動車微觀模型：矢量場模型。
  9. Presents a method for sfs based on model of polyhedron. we carry out the algorithm by solving a overdetermined linear equations which is constructed through the distributing of the vector field. the algorithm can reconstruct 3d surface from photometric stereo image given the direction of illumination

    針對目前「從明暗恢復物體形狀方法」存在的問題，提出了以多面體模型為基礎的快速演算法，根據向量場的分佈建立關於物體表面深度信息的超定線性方程組，在最小二乘意義下求得物體表面的深度值。
  10. A wavelet analysis was made to the wintertime integrative chilling damage index, time - coefficients of the first characteristic vector field and the second eigenvector field of wintertime integrative chilling damage index

    對廣東冬季綜合寒害指數和廣東冬季綜合寒害指數第一特徵向量的時間系數、第二特徵向量的時間系數進行了小波分解。
  11. In the first part, hilbert ' s 16th problem and the studies on it are introduced, and the results of zq - equivariant vector fields of degree 5 ( q = 2, 3, 5, 6 ) are given. in the second part, the definitions of zq - equivariant vector fields and the method of detection functions are stated, and all the forms of nontrivial zq - equivariant planar polynomial vector fields of degree 7 are obtained. in the third part, a concrete numerical example of zt - equivariant perturbed planar hamiltonian system of degree 7 is constructed, and for the unperturbed vector field having maximal number of centers, its global phase portraits are analyzed ( having at least 9 topologically different phase portraits ). then, for a given parameter group, its phase portrait trend is studied

    第一部分介紹了hilbert第16問題以及它的研究與發展現狀，給出了近年來利用李繼彬提出的判定函數法得出的z _ q -等變（ g = 2 ， 3 ， 5 ， 6 ）的5次系統關於它的第二部分的研究結果；第二部分介紹了z _ q -等變向量場以及判定函數法，給出了7次平面多項式系統的所有非平凡z _ q -等變向量場具有的形式；第三部分給出了一個7次平面擾動hamilton系統，研究了它的具有最大中心數的未擾動系統（ z _ 7 -等變）的全局象圖，得到了9種不同的拓撲圖形。
  12. By using the bifurcation theory of planar dynamical systems and the method of detection functions, this paper gives a configuration of limit cycles forming compound eyes. with the help of numerical analysis ( using maple ), it is shown that there exist parameter groups such that a polynomial vector field of degree 7 has at least 49 limit cycles with z8 - symmetry

    然後，利用平面動力系統的分支理論以及判定函數法，考慮z _ 8 -等變的擾動hamilton向量場，在計算機數學軟體（ maple ）的幫助下，我們得到結論： 8次平面向量場至少有49個極限環，形成具有z _ 8 -對稱性的極限環分佈。
  13. Sts produces substantially better visual results. sts is faster than lic ( linear integral convolution ) texture - based method. 2 ) in order to overcome the lic ' s shortcoming that only presents direction of the vector field, multi - granularity lic and image blend technique which can present the magnitude and direction at one time are proposed

    2 ）提出了多粒度lic紋理和圖象混合技術，它們能很好地同時表示矢量的大小和方向，從而克服了lic紋理方法只能表示矢量方向而不能表示矢量大小的缺點。
  14. An application of rotation of continuous vector field

    連續向量場旋度的一個應用
  15. In the third second, we study a closed oriented submanifold with parallel mean curvature vector field in a sphere. let s = s - nh2. we fist obtain a pinching theorem on 5

    第三節中研究了歐氏球面中具有常平均曲率向量子流形，獲得兩個結果，其中一個結果推廣了h
  16. We extend this result which is similar to ones of hirsch [ 1l ] and jiang [ 2 ] for 3 - dimensional cooperative system. furthermore, in the paper we discusse the cone of km, and obtain the similar result : theorem b : let f be a continuously differentiable cooperative vector field on d, suppose the following conditions hold : ( a ) d is pm - convex ; ( b ) every forward semi - orbit has compact closure in d ; ( c ) there is not more than one equilibrium p, then there is a unique equilibrium p and it is globally asymptotically stable

    此外，本文還將在k _ m錐下討論此問題，並得到平行的結果：定理b ：設f是d上一個連續可微的合作向量場，假設如下條件成立： （ a ） d是p _ m凸的； （ b ） d中的每一個正半軌道有緊閉包； （ c ）至多有一個平衡點p ，則一定存在唯一的平衡點p ，並且是全局漸近穩定的。
  17. In the second part, we investigate the compact submanifolds m with the parallel isoperimetric section in the real space forms rm ( c ) and prove that if there exists a parallel isoperimetric section on m, and the sectional curvature of m is always greater than zero, then m is contained in a hyper - sphere ; and get that the gauss curvature of the compact surfaces m with constant mean curvature in constant curvature space r4 ( c ) is always greater than zero, then m is a totally geodesic surface or a sphere, where an isoperimetric on m means a unit normal vector field defined globally on m with m1 ( ) = constant

    （ 2 ）研究了實空間形式r ~ m （ c ）中具有平行等參截面的緊致子流形m ，證明了具有一平行等參截面的子流形m ，如果m的截面曲率恆正，則m包含在r ~ m （ c ）的一個超球面內；對于常曲率空間及r ~ 4 （ c ）中具有常平均曲率的緊致曲面m ，如果m的高斯曲率處處大於零，則m或為r ~ m （ c ）中的全測地曲面或為一球面。這里m上的等參截面是m上整體定義的單位法向量場，使得m關於它的平均曲率m _ 1 （ ）是常數。
  18. Language is the most important communication tool for human. in television vector field, language has always been a part of program. host for conversation program, as a medium between program and audiences, his humor, wisdom, eloquence and good words become the virtual factor

    語言是人類最重要的交際工具，在電視這種傳播媒介里，語言從來都是電視節目的組成部分，談話類節目主持人做為溝通節目與觀眾的中介，語言詼諧風趣、機敏睿智，能言善辯、妙語連珠則成為至關重要的因素。
  19. Study of image mosaic based on oriented vector field

    基於向導矢量場的圖像鑲嵌演算法研究
  20. At last, we obtain several simple example about vector field

    最後我們分析了幾個光束傳輸的矢量場的簡單例子。
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