類空矢量 的英文怎麼說
中文拼音 [lèikōngshǐliáng]
類空矢量
英文
spacelike vector-
Svm maps input vectors nonlinearly into a high dimensional feature space and constructs the optimum separating hyperplane in the spade to realize modulation recognition
支撐矢量機把各個識別特徵映射到一個高維空間，並在高維空間中構造最優識別超平面分類數據，實現通信信號的調制識別。For the bldcm which has a pseudo - sinusoidal back - emf waveform, this dissertation presents a svpwm control method using six discrete position signals for minimizing the torque ripple. the main aspects for the implementation of this method are analyzed, including the initial orientation of the voltage vector, reasonable choice of the impedance angle and the advance commutation angle, and estimation of the successive rotor positions
針對反電動勢類似正弦的準正弦波反電動勢無刷直流電動機，本文提出一種基於六個離散位置信號的自同步svpwm （電壓空間矢量法）控制方法，用以削弱電磁轉矩脈動，分析了實現這種方法的主要控制環節，包括起動時電壓空間矢量的初始定位，阻抗角與電流超前角的合理選擇以及連續轉子位置的估計等。Airborne gravimetry which is discussed in this paper denote scalar airborne gravimetry only. in order to estimate the accuracy of airborne gravity measurements, the tracks of an airborne gravity survery are generally planed to join each other
依據測量值的類型不同，它可以分為航空標量重力測量和航空矢量重力測量兩類，前者用以測定重力加速度的大小，後者不僅測定重力的大小，而且同時測定重力的方向。In the last part of the paper, we derive the euclidean equation of motion of the magnetic vector in a theoretical magnetic film consisting of biaxial - anisotropic molecular ferromagnets, which is reduced to the 2 + 1 dimensional sine - gordon field equation in the strong anisotropy limit. we obtain various domain structures which are the static solutions of the sine - gordon field equation
最後考慮由雙軸各向異性分子磁體形成的理想無界膜，在強各向異性極限下，採用半經典近似方法，將磁化矢量的時空運動方程約化為2 + 1維sine - gordon場方程，從而得到各類疇結構。The article illuminates mainly two segments color - separation model based on three dimensions, gives a model conception on a knowledge base of unification technology and analyse and design digital prepress system from the whole on the problem of systemic requirement analysis. second, the article brings forward new data compress method based on memory stream and sets up new data structure to realize undo and redo methods based on analyzing all kinds of datas referred to on systemic based construction. because printing and dyeing cad system deals with many arithmetics on graphics ans image and production technics, the article illuminates vector conception, expatiates gray graphic vectorization and brings forward to graphic component ' s conception to enhangce the systemic stability and manipulating speed and improve graphic transmission
在印染cad系統的需求分析問題中，結合目前印染行業的發展和實際cad系統的整體構架，著重闡述了基於三維空間的二段法分色模型，提出了一體化工藝知識庫這個模型的概念，對數字印前系統做了整體的分析、設計在系統的底層架構問題上，著重分析了cad系統涉及到的各類數據，提出一種新型的基於內存流的數據壓縮方法，同時設計了自己的數據結構，用以實現系統的undo 、 redo操作，由於整個系統涉及眾多的圖形圖像演算法和實際工藝，為了提高系統的穩定性和操作速度，以及增強圖像的網路傳輸功能，在部分演算法中採用了矢量的概念，著重講解了灰度圖像矢量化，並且提出了圖像組件這一嶄新的概念。There are mainly two type of algorithms used for spatial spectrum estimation : one is those based on bayesian maximum likelihood method, like the ml ( maximum likelihood ) algorithm, maximum entropy method and etc., the others are based on the spatial decomposition or projection of correlation matrix, this kind of algorithm include vector characterization method, music ( multiple signal classification ) algorithm, projection matrix method, etc. music is a classical spatial spectrum estimation algorithm that has a super high resolution and is widely used today, however, it cannot estimate doa of signals that are correlated
空間譜估計的演算法大致分兩大類:一是基於極大似然估計和最大后驗概率估計統計理論的演算法，包括:極大似然估計法（ ml ） 、最大熵法等;另一類是基於對協方差矩陣進行子空間分解或投影的演算法，包括:矢量特徵法、多重信號分類法（ music ） 、投影矩陣法等。其中， music法是一種經典的空間譜估計主流演算法，具有超強的分辨性能，但它無法實現對相干信號進行測向分辨。Taking gis software ( arc / info and arcview ) and visual foxpro as basic plat, protracted the system maps of land resource, those basic subject maps included land use status map, land types map, soil types map, grade map and soil organic substance map, combing with former summarizing research results, built the spatial basic database of land resource ; based the spatial database, by the means of attribute table manipulation and take the map plot as basic unit to get the subject attributes of basic information, combined with social economy attribute information, built the attribute database ; take the spatial basic database as basic work, by the means of vector piles to get the land resource dynamic movement system maps, included land use status, land types and soil organic substance dynamic movement map
以gis軟體（ arc info 、 arcview ）與visualfoxpro為基礎平臺，繪制完成土地資源的系列圖，包括土地利用圖、土地類型圖、土壤類型圖、坡度圖、土壤有機質圖等基礎專題圖件，結合以前的工作成果，構築土地資源的空間本底數據庫；通過空間疊加分析，得到基礎單元圖斑，採用屬性表操作的方法獲取基礎單元圖斑的專題屬性信息，結合社會經濟屬性信息，建立屬性數據庫；以空間本底數據庫為基礎，採用矢量疊加對比分析的方法，得到土地資源動態變化系列圖，包括土地利用、土地類型、土壤有機質等動態變化圖。At first, we introduce a class of generalized s - r - kkm type mapping in g - convex space, and establish generalized s - r - kkm type nonempty intersection theorem under the noncompact setting of g - convex space. as for application, some new minimax inequalities, saddle point theorem and existence theorem of maximal elements are proved in g - convex spaces ; second, by using the generalized r - kkm mapping and generalized r - kkm theorems in [ 13 ], some new existence theorem of maximal elements, existence theorem of equilibrium point for the abstract generalized vector equilibrium problem and existence theorem of solutions for equilibrium problem with lower and upper bounds are obtained in topological spaces
首先，我們在g -凸空間內引入了廣義s - r - kkm型映像，並在非緊設置下建立了一類新的廣義s - r - kkm型非空交定理，作為應用，證明了g -凸空間內一些新的極大極小不等式、鞍點定理和極大元存在定理；其次，利用文[ 13 ]中引入的廣義r - kkm映像和廣義r - kkm定理，在拓撲空間上得到了一些新的極大元存在定理、抽象廣義矢量平衡問題平衡點的存在定理和有上下界的平衡問題解的存在性定理。The paper has made detailed observation by the existing apparatus and the field observation stations. based on the image and the vector database of the yutian oasis, the study has obtained the precise coordinates of investigation points by gps technique, and overlapped them with the images. after classifying the images with the maximum likelihood supervised classification method, we import the result into cis software, and analyze the yutian oasis changes about land cover " s quantity, quality and spatial position from 1976 to 2001
本文利用現有儀器設備和野外觀測網站進行詳細觀測，在建立於田綠洲圖像庫和矢量數據庫的基礎上，運用gps技術取得野外考察樣點的精確坐標並與研究區各時期影像疊加，對影像進行了最大似然法監督分類，並將分類結果轉入gis軟體處理，全面分析了1976年至2001年該綠洲的土地覆蓋類型數量、質量與空間上的變化。On this basis, the color characteristic in this system we extract is : a 72 bit vector of one dimension by statistical color histogram in hsv space ; a set of color average of sub - images and a set of position of sub - images by dividing the original image and using statistic information of pixels " color ; a set of representative color of an image using a suitable cluster algorithm in the hsl space
基於這方面的考慮，提取圖像的顏色特徵有：在hsv顏色模型空間中進行顏色直方圖統計得到一個72bit一維矢量；將圖像在縱橫方向進行平均分割，以各個分割快中像素的色彩平均值和分割塊在圖像中的位置作為圖像的像素坐標空間特徵；在hsl顏色模型空間，通過適當的聚類分析演算法提取出能夠代表圖像顏色特徵的代表色集。Face recognition based on the algebraic feature face recognition based on the algebraic feature expresses the human faces by vectors of feature too. but the vectors are algebraic feature ones. it is the projection of the human faces in the lower dimension sub - space of eigenface
基於代數特徵的人臉識別方法這類識別方法也是將人臉用特徵矢量表示，但採用的是代數特徵矢量：即人臉圖像在由「特徵臉」張成的降維子空間上的投影。Firstly this paper ananlyzed the way and problem of digital city in 3d visualization. then generalizing the development in 3d cis. especially in 3d spatial data model. based on the existing 3d data model, digital city is composed of piont, wire, surface > soild, we can use 3d vector data model in building 3d city model. on the other hand the paper emphasizes 3d reconstruction and 3d interactive of city building model
本文首先分析了數字城市三維可視化所面臨的問題和發展現狀，總結了當前3dgis ，特別是3d空間數據模型的特點和功能，在此基礎上，把數字城市中幾何目標分類為：點、線、面、體四種類別，採用了三維矢量數據模型建立三維城市模型，而且本文著重探討了城市建築物的三維重建以及三維交互。Abstract : basing on the introduction of brim - vector and face - vector, by means of analogy, the paper popularizes the cosine - theorem from flat - triangle to vacuum - polygon and arbitrary - polyhedron, concludes a series of generalized cosine - theorems which have symmetric and conformable form, and presents short and strict proof
文摘:在引入邊矢量及面矢量概念的基礎上，以類比作為手段，對餘弦定理進行由平面三角形到空間多邊形乃至任意多面體的一系列推廣，得出了形式對稱一致的一組廣義餘弦定理，並給出了其簡捷嚴謹的證明。By projecting feature vector to every class subspace, the character can be determined to one class in accordance with the projecting length. this is the difference between subspace method and other statistic methods
在分類決策時，將樣本特徵矢量向各類別子空間投影，由投影長度判別樣本歸屬，這也是子空間方法與其它統計模式識別方法的不同之處。Besides, successfully calculating the electromagnetic four - potential in the spacetime of charged black hole expressed by the generali zed spherical coordinate and furtherly solving the h - j equation of such spacetime make it possible to get the exact description of the energy extent of nonthermal radiation particle and to study the characteristics of such black hole ' s nonthermal radiation
另外，本文還求出了一類用扁橢球坐標表示的荷電黑洞時空中的電磁四維勢矢量，從而成功地求解了此類彎曲時空中的hh方程，得到了這種非熱輻射粒子能量范圍的精確表達式，從而對這類黑洞的非熱輻射特徵進行了研究。At the same time, we especially study a class of abstract generalized vector equilibrium problem ( in short, agvep ) in g - convex space, using the generalized s - r - kkm type theorem, we establish some new existence theorems of equilibrium points for the agvep in noncompact g - convex spaces
同時，我們在g -凸空間內著重研究了一類抽象廣義矢量平衡問題（簡稱agvep ） ，利用廣義s - r - kkm型定理在非緊g -凸空間內建立了一些新的抽象廣義矢量平衡問題平衡點的存在定理。In this paper, the backward simulation was summarizd at home andabroad, the characteristics of shell nosing were introduced, the theory and scheme of backward simul - ation of shell nosing was constructed, the determined methods of the boundary conditions were put forward in backward simulation for the processes of shell nosing
論述了推力矢量控制技術是提高空空導彈性能的核心技術，介紹了常用的三類推力矢量裝置，著重討論了燃氣舵式和擾流片式推矢裝置的特點、設計方法、性能及其優缺點.在此基礎上，研究了適用於氣動力/推力矢量復合控制的變結構控制系統及其開關函數的切換條件和飛行控制系統框圖.最後綜述了推力矢量裝置在第四代空空導彈上的應用情況Based on the analysis of image wavelet transformation and the space / frequency distributing characteristics of different subbands " coefficients, this dissertation fully exploits the following theories and methods : scalar quantization, vector quantization, trellis coded quantization, trellis coded vector quantization, vector classification, codebook expansion and weighted mean square error rule basing mankind visual characteristics, etc. from different angles of information amalgamation, it develops several innovative algorithms of image compression and coding, gives their realization schemes, and makes plentiful simulation tests
本文在分析了圖像小波變換的原理和子帶系數空間及頻率分佈特點的基礎上，充分利用標量量化、矢量量化、網格編碼量化、網格編碼矢量量化、矢量分類、碼書擴展和基於人眼視覺特性的加權均方誤差準則等思想和方法，從信息融合的不同角度展開了對小波圖像的壓縮編碼研究，同時也討論了這些方法在靜止圖像量化中的具體應用。Such integra ting feature vector is used for building k dim e nsion gaussian m odel, whose param e ters are estim ated by an expectation - m a xi m i zation ( em ) algorithm, and then the resulting block - cluster m e mberships provide a segm entation of th e im age. after segm ented, a m e thod of param e ter - trimm e d average for describing re gion is proposed, of which the param e ter is decided by area and position of region dire ctly. the sim ilarity m easure between two im ages is defined by integrating properties of all regions in the im age
文中先將圖像分成4 4小塊，各塊的顏色、紋理、位置特徵構成8維的特徵空間；在該空間中對得到的8維特徵矢量建立一個k維高斯模型，應用期望最大em演算法估計模型參數，產生的塊特徵-聚類隸屬度函數實現對圖像的分割；為減小分割演算法不確定性對檢索效果的不良影響，對得到的區域採用參數均衡平均特徵表示，其中參數的確定直接與區域的面積、位置有關。Three spatially discrete schemes about the convection terms of the n - s equations : the centered difference with artificial viscosity by jameson, the van leer scheme of flux vector splitting, and the roe scheme of flux difference splitting are studied respectively
3研究了n - s方程組中對流項的三種空間離散格式：改進的jameson中心+人工粘性格式、通量矢量分裂類vanleer格式和通量微分分裂類roe格式。分享友人