approximate error 中文意思是什麼

approximate error 解釋
近似誤差
  • approximate : vt 1 使接近。2 接近；走近。3 近似，約計。4 模擬。5 估計。vi 近於。 His income this year approxima...
  • error : n. 1. 錯誤；失錯。2. 謬見，誤想；誤信；誤解。3. 罪過。4. 【數學】誤差；【法律】誤審，違法；（棒球中的）錯打。adj. -less 無錯誤的，正確的。
  1. The relation of radius of curvature and error as well as formulas of increasing parameters on condition of constant error are diverted. the equation of the line on the center of approximate circular arc is obtained ， and it can avoids the trouble that numerical solution owns possibility of no convergence and simplifies node calculation of non - circular curve

    導出了曲率半徑與逼近誤差之間的關系和等誤差條件下的參數遞推公式，建立了通過逼近圓弧圓心的直線方程和圓心坐標計算公式.按這種方法用圓弧逼近平面參數曲線，不需要求解非線性方程組，避免了計算可能不收斂的麻煩，簡化了非圓曲線的節點計算過程
  2. Finite element method ( fem ) is an approximate solution in engineering, there exists some error in the analysis result, so it is important to check the result and to geta right view of the result in the analyzing process, then this can lead the right analysis in the next step

    摘要有限元法是一種工程近似求解的方法，存在誤差，所以在用有限元軟體進行工程分析計算時，很重要的一點是分析過程中必須審視分析的結果，對結果有正確的認識，從而指導工程分析的正確進行。
  3. In section 2. 2, by a priori estimates and fourier spectral method, we prove the existence and uniqueness of the global smooth solution for the periodic initial value problem and obtain the large time error estimate between spectral approximate solution and the exact solution. in sections 2. 3 and 2. 4, by a priori estimates and galerkin method, we prove the existence of the global smooth solution and global attrac - tors for the initial - boundary value problem. chapter 3, consider the initial - boundary value problem of the multidimen - sional non - homogeneous gbbm equations

    第二章，考慮一類一維非齊次bbm方程，在第二節中利用fourier譜方法和先驗估計證明了具有周期初值問題的整體光滑解的存在性和唯一性，給出了fourier譜近似解和精確解的長時間誤差估計；在第三、四節中討論了初邊值問題，利用與時間t無關的一致先驗估計，證明了整體光滑解和整體吸引子的存在性。
  4. With the thorough research on these and computer ability increasing quickly, people are paying more and more attention to relational numerical study. the mostly discussion is how to numerical simulate, concering error estimate in long - time, the existence of approximate attractor, well - posedness of solution and numerical solution and dimension estimate and so on, now there are much study [ 5 ], [ 15 ]. spectral method is important numerical method, but it is very hard so that research is a less

    隨著對它研究的深入和計算機能力的迅速提高，與之相關的數值研究也越來越被人們關注，這方面討論的主要是對原系統如何進行數值模擬的問題，涉及到大時間誤差估計，近似吸引子的存在性，穩定性，收斂性及其維數估計等諸多問題，目前已有很多工作。
  5. Transformed the six - bar guide - bar mechanism realizing linear displacement in automatic instruments into a basic rotating guide - bar mechanism, established the mathematical model of velocity approaching constant by the classical approximate synthesis theory and the modern error theory, discussedthe influences of the existent region of main mechanismic parameters on kinematic and dynamic properties, analysed the theoretical transmission ratio error, advances systematic, complete steps and methods for dimensional synthesis of this mechanism with computer aided design

    將自動化儀表中實現線性輸出的六桿導桿機構轉化為基礎轉動導桿機構，應用經典的機構近似綜合理論與現代的誤差理論，建立了速度逼近常數的數學模型，討論了主要機構參數存在區域及對運動、動力性能的影響，分析了傳動比理論誤差，提出了系統完整的計算機輔助尺度綜合的步驟與方法。
  6. Finally, take example for a non - linear function, method mentioned in this paper is used to design wavelet neural network to approximate this function. the computer simulations confirm the method that is brought out in this paper is useful, and prove that wavelet neural network has not only fast convergence and better precision of approximation, but also good capability of forecasting and escaping error

    最後，對於一個實際的非線性函數，用本文介紹的方法來設計小波神經網路來逼近函數，模擬結果表明該方法的有效性，並且表明小波神經網路在函數逼近上，網路的收斂速度快，逼近精度高的特點，並且網路具有很好的泛化能力和容錯性。
  7. In this paper, we expand eigenvalue of poisson equation using bilinear element, by the formulation of the error expanition, we can conclude that it is a upper bound. and by two numerical example, we computer the approximate eigenvalue of poisson equation in square and l - shape domains, then we analyses the approximate eigenvalue. we also extraplate the error expansion and enhance the accuracy of the eigenvalue form the second order to the forth order

    本論文對poisson方程的特徵值採用雙線性元進行展開，得到了誤差展開式，通過誤差展開式，我們能得到特徵值是上界。通過數值算例，計算方形與l形區域上的poisson方程的近似特徵值，並對數據進行分析，驗證了理論的正確性，然後通過對誤差展開式外推，收斂級數可以從二階提高到四階，得到了高精度的解。
  8. Firstly, based on backstepping and the supervisory control strategy, a robust adaptive fuzzy controller is designed for a class of nonlinear systems. the first type fuzzy logic system is used to approximate the unknown part of the process. the adaptive compensation term of the optimal approximation error is adopted

    本文首先針對一類不確定非線性系統，基於backstepping方法，利用監督控制，引入最優逼近誤差的自適應補償項，並利用型模糊邏輯系統逼近系統的未知部分，提出了一種魯棒自適應模糊控制器設計方案，運用李亞普諾夫第二方法，先證明了閉環模糊控制系統全狀態有界，再證明了跟蹤誤差收斂到零。
  9. In the fields of fluid dynamics, entropy inequality reflects the second law of thermodynamics. i. e. entropy must increase across shock waves ( a kind of discontinuity ). all kind of approximate schemes should reflect the fact that it must satisfies some kind of discrete entropy inequality ). from the view of practical computation, stability and theo - retical error of any kind discrete schemes all dependend of the smoothness of the solution of ( 0. 2. 1 ). generally, the approximate solution have good stability and theoretial error in the area where the solutions have more regularity and poor stability and theoretial error in other area

    從流體力學來看，它事實上是熱力學第二定理的反映，即熵越過激波（一種間斷）要增加。各種估計格式構造的估計解應反映這一事實，即滿足熵不等式。從實際計算來看，總是通過離散化求解，不考慮計算的積累誤差，它的穩定性與計算精度都依賴與真解的光滑性，一般說，在解較光滑的區域有較好的穩定性與計算精度，而在較粗糙的區域則相反。
  10. We introduce some marks and lemmas before we construct chebyshev rational spectral formation of semi - discrete with respect to space. then we obtian the error estimate for the approximate solution and the existence of approximate attractor an, and besides, we prove the upper semi - continuty on the global attractor

    在引入一些本文所需的記號和引理之後，通過建立chebyshev關于空間方向的半離散有理譜格式，證明了方程近似解的誤差估計，以及在此格式下近似吸引子a _ n的存在性，並且得到關于原方程整體吸引子的上半連續性。
  11. One of the important prerequisites for nn to approximate the nonlinear function f ( x ) is the states x of the system should be in a compact set. therefore, the unkown unlinear systems can be expressed by nn and a model error e ( x ), and there exists a positive constant 6 such that e ( x ) < 8. so the problem can be incorporated into robust adaptive control

    神經網路可以逼近非線性函數f （ x ）的一個重要前提是x必須落入某一緊集s中，因此在一緊集u上，未知的非線性系統就可以用神經網路及一建模誤差項（ x ）表示出來，且存在一正的常數，使得（ x ） ，從而這一問題可以歸結到魯棒自適應控制中。
  12. A popular solution toimprove the speed and scalability of the association rule mining is todo the algorithm on a random sample instead of the entire database. buthow to effectively define and efficiently estimate the degree of errorwith respect to the outcome of the algorithm, and how to determine the samplesize needed are entangling researches until now. in this paper, an effective and efficient algorithm is given based on the pac probably approximate correct learning theory to measure and estimatesample error

    關聯規則挖掘作為數據挖掘的核心任務之一，由於其任務本身的復雜性通常需要多次整個掃描數據庫才能完成挖掘任務且頻繁模式可能產生組合爆炸，使得從原始的大規模數據集上抽取一部分樣本，在其上尋找用戶感興趣的近似規則成為目前提高演算法效率和可擴展性的一種簡單有效的現實可行方法之一。
  13. Iv ) constructing of a kind of approximate integration conservative remapping algorithm. through analyzing a second order sign - preserving conservative remapping method, two conservative remapping algorithms have been constructed by using the reconstruction method to take the place of the positivity - preserving error compensation algorithm

    （ 4 ）近似積分守恆重映方法構造：在分析了二階保號守恆重映方法的基礎上，通過重構的方法代替原演算法中的誤差補償方法，構造了兩個守恆重映方法。
  14. The backward error and the structured backward error of the approximate solution are the criteria to judge the stability and the strong stability of the numerical algorithm. condition number is a measure of the sensitivity to the approximate solution for the perturbation of original date

    近似解的最佳向後誤差和最佳結構向後誤差的數值分別是判別演算法的穩定性和強穩定性的標準，而條件數則是反映數值問題的解對于該問題數據擾動的敏感程度。
  15. In chapter two, we consider the finite volume element methods for nonlinear parabolic problems optimal order error estimates in the h1, l2norms and w1, almost optimal error estimates in l are demonstrated. moreover superconvergence in the error between the approximate solution and the generalized elliptic projection of the exact solution is also shown

    第二章考慮非線性拋物方程的初值問題的體積有限元法，並證明了h ~ 1 ， l _ 2和w ~ （ 1 ， ）誤差估計以及l _最優誤差估計，而且還得到了近似解和真解的廣義橢圓投影間的超收斂估計。
  16. The hspice simulation results indicate that the charging current is up to 2a and the precision of termination voltage is very high with the error only around 10 - 3. the efficiency is approximate 68 % when the ic is powered by fix voltage source and up to 95 % when the ic is powered by current limited source

    Hspice模擬結果表明，該晶元恆流模式下最大充電電流為2a ;對充電終止電壓的控制精度高達10 - 3 ;當採用恆壓作為電源時，充電效率為68 %左右;當採用具有電流限制功能的電源時，充電效率可達到95 % 。
  17. Abstract : an approximate solution of a class of singular integral equation is given, the error and the possibility of the solution is analysed and proved

    文摘:給出了一類奇異積分方程的一種近似解法，並對其誤差進行了分析估計，同時驗證了該方法的可行性
  18. The same conclusion as derived from the original pda under approximate condition is concluded this way without any approximations. the second method is the instant - state performance prediction based on the hyca method. this method not only gives the off - line recursive error variance relation, but also gets a series of performance measurement such as track life

    然後應用兩種方法對其進行性能估計和預測，一是基於riccati方程的穩態性能估計，其結果與pda演算法近似條件下得出的結論相同；二是基於hyca方法的瞬態性能預測，不僅給出了誤差方差的離線遞推關系，而且得到了航跡壽命等一系列性能指標的估計值。
  19. Firing error caused by using the nato meteorological layer - weight, by using the approximate meteorological layer - weight and by using the exact meteorological layer - weight under different initial velocity and different ballistic coefficient is analyzed. firing error caused by air - layer numbers of trajectory are set forth

    討論了在不同初速和彈道系數下用北約層權、近似層權和準確層權計算的射擊諸元精度，闡明了利用準確層權及近似層權時彈道分層數對射擊精度的影響、不同初速與彈道系數下分層數與精度的關系。
  20. Based on the statere configuration system, an unknown input observer is presented for the prediction of time series. the approximate error of the ar model is regarded as the unknown - input of system

    以實時擬合時間序列的線性ar模型作為時變系統的已知線性部分，將擬合誤差作為時變系統的未知輸入，實現了系統狀態的多步預測。
分享友人
分享到 Line

分享到臉書