擬橢圓的 的英文怎麼說
中文拼音 [nǐtuǒyuánde]
擬橢圓的
英文
quasi-elliptic-
In this paper, the design of a practical sort of high performance biquadrates elliptic active band - pass filters is emphasized, and then the design techniques and how to calculate the resistors and capacitances, how to make computer simulation and tolerance analysis with computer are described in detail
摘要本文我們重點介紹了一種實用的雙二次型高性能橢圓函數有源帶通濾波器的設計方法，詳細介紹了該濾波器的設計步驟及阻容元件的參數計算，並對設計出的電路用計算機進行模擬模擬和容差分析。Previous algorithms either fitted general conies or were computationally expensive. by modifying the ellipticity constraint, we can ensure what we get is an ellipse, so that we can get the symbol to track moving objects
對此文中通過對橢圓擬合約束條件的修改確保擬合的二次曲線為橢圓，從而實現了符號化跟蹤運動物體的系統。1 milner, f. a., and park, e. j., a mixed finite element method for a strongly nonlinear second - order elliptic problem, math. comp., 1995, 64 : 973 988
2陳煥禎，二階擬線性橢圓問題混合元方法的最大模估計，高等學校計算數學學報，待發表The conventional sphere model of earth and circle model of orbit are discarded, and the ellipsoid model and the ellipse model are selected for further research, which achieves a method to determine the target position through the antenna pointing direction. and the spaceborne sar system design and simulation software is brought forth. this software accomplishes sar system coefficients design for antenna area, pulse repetition frequency, signal bandwidth, downlink data rate, radar transmitter power and satellite platform yaw steering
本文從星載雷達的星地幾何關系入手，舍棄傳統星載合成孔徑雷達研究中的球地球模型和圓軌道模型，研究了在地球橢球模型和橢圓軌道模型下由雷達天線確定目標坐標的方法，並在此基礎上研製了星載合成孔徑雷達系統設計與模擬軟體，完成雷達系統天線尺寸、脈沖重復頻率、信號帶寬、雷達信號數據率、雷達發射功率、衛星平臺的偏航牽引等幾個方面的系統參數設計以及雷達多普勒特性、雷達系統模糊、雷達定位及精度的分析，最後完成雷達回波信號的模擬。Selection of secure elliptic curves, implementation of elgamal encrytion and signature over big prime field ; 2. fpga implementation of point multiplication ; 3. at last put forward two blind signature based on ecc, nyberg - rueppel blind scheme and dsa blind scheme, these two schemes can be used in e - cash svstems
作者所做的主要工作有： （ 1 ）實現了安全橢圓曲線的選取，實現了基於大素數域上的橢圓曲線的elgamal加解密和數字簽名： （ 2 ）設計了標量乘的fpga功能模擬； （ 3 ）最後提出兩種用橢圓曲線密碼體制實現的盲簽名方案，基於ecc的nvberg - rueppel盲簽名方案和基於ecc的dsa盲簽名方案，這兩種方案可以用於電子現金系統獲得匿名性。2. based on the spaceborne sar theory, an elliptical earth model and an elliptical orbit model are proposed, which have some advantages over the traditional circular ones
2 .基於星載sar的基本理論，給出了一種進行星載sar回波信號模擬的橢圓地球模型和橢圓軌道模型，它們優于傳統的球地球模型和圓軌道模型。The laser power is detected through the pd ’ s movement across the faculous region. when the value of the peak value of laser power is got, the power of the facular boundary points can be found according to definition of the facular boundary such as “ 1 / e ~ 2 ” theory. then the equation of the facular boundary can be made fitting by using the least square method, and calculate the beam divergence at last
採用兩個光電探測器分別檢測光束不同高度上的兩個光斑，在確定光斑中心最大光強值后，根據光斑截面尺寸的1 / e2定義，得到光斑截面邊界點的光強值，並以其為標準判定光斑截面的邊界點，對探測到的邊界點通過最小二乘法進行擬合，得到橢圓光斑截面的方程，根據空間幾何關系求出發散角。A systematic summary of previous work has been given first. then this paper presents a novel multi - stage face detection algorithm, which makes a good use of human face pattern ' s valuable information in colour image sequences. the difficult detection task has been divided into four steps : the preprocessing, which is to gain skin colored regions with human skin color model ; the roughly detection and face region refining by elliptic curve fitting ; the fine detection with facial features " detection and location ; the face / non - face classification step based on pca and gaussian density estimation technique
本文對彩色序列圖像中的人臉檢測和跟蹤技術進行了深入的研究，其具體內容為：對近年來的研究工作進行了系統的介紹；提出了一個由粗到細的多階段的人臉檢測演算法，該演算法充分利用了序列圖像中人臉模式的各種有用信息，將復雜的檢測工作分為了四個部分：膚色區域分割預處理，人臉粗檢及利用橢圓擬和的人臉區域提煉，應用人臉基本特徵檢測和定位的人臉細檢， pca結合高斯概率密度估計的人臉驗證。Numerical calculation and computer simulation of magnetic field of long straight conductor with ellipse cross - section
橢圓截面長直載流導體磁場的數值計算和計算機模擬Based on the review, the fluid flow and heat transfer in the curved circular and rectangular pipes have been researched by employing perturbation method and numerical simulation with a physical model under the rotational orthogonal curvilinear coordinate in a rotating curvilinear pipe with multi - parameters. we firstly analyzed the fully developed fluid flow and heat transfer, mixed convection heat transfer, the development of flow and heat transfer in the inlet in different cross section ( circular, elliptical, annular and rectangular crossection ). the variations of the secondary flow, axial velocity, distribution of temperature, the friction force on the wall, the ratio of friction factor as well as the nusselt number with different dimensionless parameters had been examined in detailed
本文在總結和分析了一個世紀以來有關曲線管道流動和換熱特性的研究成果的基礎上，以旋轉正交曲線坐標系統下的多參數旋轉螺旋管道中的對流傳熱為物理模型，通過攝動方法和有限體積法，首次對各種截面（圓截面、橢圓截面、環形截面、矩形截面）旋轉曲線管道內充分發展流動的流動結構和傳熱特性（包括耦合對流傳熱特性）以及旋轉曲線管道開口段發展流動的流動結構和換熱特性進行了系統的數值模擬和理論分析，詳細討論了各種無量綱參數對管道內軸向速度分佈、二次流結構、溫度分佈、壁面摩擦力、摩擦系數比以及管道nusselt數的影響，獲得了若干創新性成果。We study in this paper the filtration problem in partially saturated layered porous media in one dimensional. that is the thid problem boundary value problem of on dimensional degenerate quasi - linear elliptic - parabolic equation with discontinuous coeffi - cients. the existence, uniquess of the solutions and some properties of the solution are proved
本文主要討論一維有限雙層多孔介質中部分飽和的滲流問題，即具有間斷系數的一維擬線性橢圓-拋物退化方程的第三邊值問題。證明了該問題的解的存在性、唯一性及弱解的邊界性質。Multiplicity of solutions for quasilinear elliptic equations
擬線性橢圓型方程的多解性結論The radial solutions of 2 - order quasilinear elliptic equation
二階擬線性橢圓型方程徑向解的存在性After validating the good agreement between simulated results and observed ones, the characteristics and the distribution rules of tides and tidal currents in the whole seas near to zhejiang are thoroughly analyzed, mainly based on the simulated results, combining with the observed conclusion. the co - tidal and co - range charts, co - current charts, types of tides and tidal currents, distribution of maximum possible tidal range and maximum possible tidal current, phenomenon of diurnal inequality, moving modes of tidal currents, tidal ellipses, distribution of tidal residual currents and the vertical structure of tidal currents and residual currents are investigated respectively. and thereout we draw a series of meaningful conclusions as follows, the main of these are : 1
在驗證模擬與實測符合良好的基礎上，本文以模擬計算結果為主，結合實測資料的分析結論，對整個浙江近海的潮汐、潮流特徵和分佈規律作了全面、深入的探討，分別對各主要分潮的潮汐同潮圖、潮流同潮圖、潮汐性質、潮流性質、最大可能潮差分佈、潮汐日不等現象、最大可能流速分佈、潮流的運動形式、潮流橢圓、余流分佈以及潮流和余流的垂向結構等進行了研究，並由此得到了一系列有意義的結論。The non - existence of radially non - increasing positive solutions is derived for a system of quasi - linear elliptic differential equations first of all
摘要首先得到一類擬線性橢圓型方程組正解的先驗界估計和衰減性質，從而推出該方程組的徑向非增正對稱解的不存在性結果。This method offers more precise geometry for spaceborne sar system design and simulation. 3. in the analyzing on the radar doppler properties, under the ellipsoid earth model and ellipse orbit model, considering the earth rotation, the radar doppler properties with different orbit eccentricity are compared, and the fact that orbit eccentricity affects doppler frequency rate is found
在雷達多普勒特性分析中，論文採用橢球地球模型和橢圓軌道模型，結合地球的自轉，通過不同偏心率下雷達多普勒特性的比較，研究了軌道偏心率對合成孔徑雷達系統設計與模擬軟體研究雷達多普勒調頻斜率的影響。Fusion problem of weak solutions for a class of quasilinear elliptic equations
擬線性橢圓型方程弱解的拼集問題Existence of positive radial solutionsfor a class of quasilinear elliptic systems
一類擬線性橢圓型方程組正對稱解的存在性Numerical simulation of flow behaviors and heat transfer characteristic of rectangular finned elliptical tube heat exchanger
矩形翅片橢圓管熱交換器流動和換熱特性的數值模擬First, the basic raster graphics algorithms for drawing 2d primitives are introduced, including edge coherence and the scan - line algorithm of triangle, brush algorithm of thick line ( and its improved method ) and midpoint circle and ellipse algorithm ; and the current situation of the advanced algorithms is also involved. second, the mapping of high level programming language to hardware description language is described, some principles of the conversion of algorithm to state machine are proposed also ; then, the implementation of basic graphics in hardware is discussed in detail, the state machines are drawn in the paper, and the interfaces of hardware are defined, block diagrams too, and the advanced algorithm of conic is proved ; finally, some issues about test are described, the results of simulation and synthesis are given in the last, and some detailed data are displayed in the appendix
首先介紹了現有的基本圖形生成演算法，包括三角形邊相關掃描演算法，寬直線的線刷子演算法及其改進和圓形、橢圓的生成演算法，同時介紹了加速演算法的研究現狀；然後，討論了高級語言描述到硬體描述語言的映射，提出了演算法到狀態機抽象的規律；接著具體討論了基本圖形的硬體實現，給出了各演算法的狀態機圖，介面定義和實現框架，並且從理論角度給出了二次曲線加速演算法的證明：最後採用軟體工具進行測試驗證，給出了模擬、綜合實現的結果，並在附錄中有詳細的實驗結果數據。分享友人