moment matrix 中文意思是什麼
moment matrix
解釋
矩量矩陣-
Aiming at five kinds of targets from geneva lake which are rock, sand, pebble, grit and sullage, the features we extracted based on the cwt time - frequency matrix are singular values, some parameters of histogram and invariant moment
針對萊蒙湖底的巖石、沙、卵石、砂礫、淤泥等五類目標，文中所提取的特徵主要有時頻矩陣的奇異值、直方圖的有關參數以及不變矩等三類特徵。 -
Moment method is used for the analysis of interference among the vehicular multiple antennae in this paper. the multiple antennae system is equivalent to a microwave network, then the admittance matrix of the network can be obtained. using the admittance matrix, we can analyze the characteristic of coupling between two antennae and the near field of the antennae by the mom
本文採用矩量法對車載多天線間的相互干擾特性進行了分析，將多天線系統等效為微波網路，然後採用矩量法求該網路的導納矩陣y ，利用該導納矩陣對天線間互耦特性進行分析，同時計算天線的近場分佈。 -
This dissertation deals with the content - based image retrieval ( cbir ) theory and technique ; some new features and tools for more concisely and discriminatingly charactering the content of an image are proposed, such as region - based color histogram, grey - primitive co - occurrence matrix, ratio of centripetal moment, ratio of eccentric moment and ratio of inertial moment. a new modified genetic algorithm is also described in this dissertation, which can upgrade the performance of standard genetic algorithm ( sga ) while used in image segmentation
本文以圖像數據庫檢索為主線，討論了基於視覺內容的圖像檢索方法，提出包括基於區域顏色直方圖、灰度?基元共生矩陣及向心矩比、偏心矩比、慣性矩比的特徵描述方式；對遺傳演算法存在的早熟、收斂到最優解慢等問題提出了解決方法，並將改進遺傳演算法應用到圖像分割中，編制了相應程序。 -
Analyze the rectangular microstrip patch array using green functions method, resolve the integral equation by the method of moment, propose a method for resolving the mom impedance matrix, which is a combine of analytical method and numerical method
用矩量法計算了同軸饋電的矩形微帶貼片陣列的電流分佈，在求解廣義阻抗矩陣時，給出了一種解析方法與數值方法相結合的方法。 -
Moment gyroscope is implement institution of the satellite attitude control system. the dynamics equation of single gimbal control moment gyroscope is set up, the control law of moment gycroscope is designed and the distribute matrix is confirmed reasonly
選擇力矩陀螺作為該衛星控制系統的執行機構，建立單框力矩陀螺的動力學方程，在此基礎上進行力矩陀螺控制律設計，合理地確定力矩陀螺的分配矩陣。 -
Secondly, i applied the method of matrix analysis to build up mathematic model of swaying platform, and solved the question of motion anti - solution, velocity and acceleration. then i analyzed the dynamics problems of the swaying platform. based on the calculation of the swaying platform ’ s force and moment, built up the dynamics equations of swaying platform by using virtual work principle
其次，應用矩陣分析和齊次坐標變換建立了搖擺臺的運動學數學模型，從反運動學的角度分析了搖擺臺的位置、速度和加速度的反解方程;分析了搖擺臺的動力學問題，通過對搖擺臺的驅動桿進行附加力和附加力矩計算，並利用達朗貝爾原理和虛功原理，建立了搖擺臺的動力學方程。 -
By calculating rcs of arbitrary shaped conducting objects and the input admittance of a wire antenna on the arbitrary shaped conducting platform, it is shown that the method of impedance matrix interpolation can greatly reduce the computation time compared with the traditional moment method
該方法僅對幾個插值點頻率直接進行計算，便可通過插值快速生成其他頻率點上的阻抗矩陣，相比于對每一個新頻率點重新直接計算阻抗矩陣，極大地減少了計算時間。 -
He meets morpheus and his companions, who believe that he is the prophesied " one " who can help free human civilization from its domination by the matrix. the only problem is neo himself. he lacks faith in his ability to counter the potent ai machines, and does not gain confidence until the film s climactic moment, when he fully develops his inner power and sacrifices himself to save his companions
男主角名叫尼歐，他是一名電腦駭客，他一直對身處的電腦世界充滿疑問，感覺不真實，因此他便在網路世界中尋找答案，因而結識了莫斐斯，莫斐斯等人都認為尼歐就是那位預言中，將人類自電腦牢籠中解放出來的救世主，可是唯一的問題就在於尼歐對自己並沒有信心，他認為自己無法跟電腦人的力量相抗衡，一直到最後緊急關頭，他為了拯救同伴而犧牲時，才完全開發出自己的萬能力量。 -
The pace of the film is quite fast, and a lot of materials are integrated together, there is hardly a silent moment where the characters have nothing to do. however, it doesn t mean the film is very entertaining, as most of the gags are either parodies of other films e. g. matrix, the
而且，片中笑料不是戲瘧其他電影如廿二世紀殺人網路和ptu ，就是翻炒舊橋尤其是周星馳的喜劇，例如學整蠱專家大玩無厘頭的武器設計，實在毫無新意可言。 -
Matrix method for several moment problems
幾類矩問題的矩陣解法 -
In this dissertation, the radiation problems of wire antenna mounted on the arbitrary shaped conducting platform and the scattering problems of arbitrary shaped conducting objects are analyzed using impedance matrix interpolation with the moment method
本文應用矩量法結合阻抗矩陣插值技術，快速有效地求解實際工程問題中常見的任意形狀金屬目標的電磁散射問題及金屬載體上線天線的電磁輻射問題。 -
Then the solving procedures of these bies by the rwg functions based moment method are elaborated, and the method of modeling complex objects built of arbitrary line, surface and volume structures is developed. in order to solve realize antenna and circuit problems, methods of adding excitations and concentrated loadings with moment method are deceloped, and matrix pencil ( mp ) method is used to deembeded the s prameters of antennas and circuits from the computed current distribution. some numerical results of practical complex antenna and scattering problems are presented to illustrate the veracity and effectiveness of the method
在第一部分中，首先從電磁場的基本理論出發，基於等效原理和邊界條件以統一的方法建立了用於分析金屬、介質及金屬與介質混合結構的邊界積分方程，並歸納和比較了各類積分的適用范圍和優缺點;在此基礎上，給出了使用基於rwg函數的矩量法求解各種邊界積分方程的一般過程;研究了具有任意線、面、體組成的復雜結構的電磁建模方法，並給出了各種多面連接情況下基函數和未知量的選取方法;研究了使用矩量法分析電路、天線問題時集總元件和激勵源的處理方法，並基於矩陣束方法（ matrixpencilmethod ）提取了電路和天線問題的s參數;最後通過分析一些工程中的復雜金屬天線問題和具有「金屬與介質混合結構」的散射和天線問題驗證了方法的準確性和高效性。 -
The moment method is used to calculate the rcs of three - dimensional targets in this paper. these targets include conducting targets, dielectric targets and coat targets. triangular patches are used to model the surface of the target, then electric field integral equation ( efie ) and magnetic field integral equation ( mfie ) are built which satisfy the boundary conditions. the rwg vector base functions are used to denote equivalent electric current and magnetic current on the surface of the target. finally use the galerkin method ( rwg vector base functions are basis function and test function ) to transform integral equations into matrix equation. when obtain the equivalent electric current and magnetic current, we can calculate the scattering field and the rcs of the target
本文利用矩量法計算了三維導體目標、介質目標、塗層目標的雷達散射截面。首先採用三角形面元對物體表面幾何形狀進行模擬，然後建立滿足邊界條件的電場積分方程（ efie ）和磁場積分方程（ mfie ） ，將物體表面的等效電磁流用rwg矢量基函數表示，最後利用伽略金法（ rwg矢量基函數既作為基函數又作為檢驗函數）將電磁場積分方程轉化為矩陣方程求解未知電磁流系數，得到了表面的等效電磁流后，可以計算散射場和目標的雷達散射截面。 -
An electric field integral equation is developed to relate the near fields to the equivalent magnetic current. a moment method procedure is employed to solve the integral equation by transforming it into a matrix equation
文中給出了關于測量近場和等效源之間關系的電場積分方程，並通過矩量法將積分方程轉化為矩陣方程。 -
Moment fourier descriptor matrix and its using in invriant pattern recognition
基於小波矩不變量的模式識別方法 -
Based onthe analysis of the behavior of joints, further analysis about the composite steel frame isproceeded. in this way, the stiffness matrix of the frames is inferred, and the formula of thefixed moment calculation about beam element with semi - rigid connections is presented. at theend of this paper, a two - span and five - story composite steel frame is analyzed using finiteelement software ansys8. 0. the analysis indicates that the semi - rigid behaviour of joints havesome influence on the mechanical behavior of frame, but the main factor of influence is the
最後採用ansys對一雙跨五層組合鋼框架進行了結構分析，分析表明，連接節點的半剛性性能對組合鋼框架的受力性能有影響，但半剛性組合鋼框架的受力性能的主要影響因素是節點約束系數，本文詳細分析了約束系數對框架受力性能的影響，指出在組合鋼框架設計當中，考慮連接的半剛性性能能使框架內力分配更為合理。
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