theory of approximations 中文意思是什麼

theory of approximations 解釋
逼近論
  • theory : n. 1. 理論，學理，原理。2. 學說，論說 （opp. hypothesis）。3. 推測，揣度。4. 〈口語〉見解，意見。
  • of : OF ＝Old French 古法語。
  1. In theory of approximations, the classic methods of polynomial approximation for rational expression are various interpolations and operator approximations, such as lagrange interpolation, hermite interpolation and bernstein polynomial approximation

    在逼近論中，用多項式逼近有理式的經典的方法是各種插值與運算元逼近方法，如lagrange插值、 hermite插值和bernstein多項式逼近等。
  2. According to the theory of light transmission, we derived the expression of rotation angle as a function of the dielectric constant conductivity of er fluid, and ( the angle between the electric vector of linearly polarized light and electric field ) from maxwell ' s equations and fresnel reflection, on the condition of several appropriate approximations and assumptions

    進而導出了非均相結構電流變液在外電場與光場交互作用下旋光角與（入射線偏振光振動方向與外加電場方向間夾角）及參數（為外加電場e 、分散顆粒介電常數、體積分數、絕緣油介電常數、位置矢量（ ? ）等量的函數）的西北工業大學應用物理系碩士學位論文摘要理論表達式。
  3. Bernstein approximation is one kind of classics and abundant research subjects in the theory of approximations, which mainly makes use of good properties and graceful structures of bernstein polynomials to discuss a great deal of relations between bernstein operators and the functions approached by it

    Bernstein逼近是逼近論中一類經典而豐富的研究課題，它主要是利用bernstein多項式的良好性質和優美結構來討論其與所逼近函數之間的諸多關系。
  4. This paper proposed some methods for finding out sure regions and ambiguous regions defined by lower and upper approximations in rough set theory. an applicable ending - criterion for semi - supervised back - propagation algorithm was proposed and a new rough classifier framework was studied, the assessment results show the effectiveness of the proposed criterion. a new classifier based on support vector machines was studied and applied

    本文提出了幾種劃分樣本邊界區的方法:提出了一種應用於半監督bp演算法的實用結束判據，並根據粗糙集理論，研究了一種新的粗糙分類機制，取得良好的效果；應用支持向量機理論，構造分類器並劃分樣本邊界區；最後研究多個分類器集成的方法尋找樣本邊界區，同樣提高了暫態穩定評估的可靠性
  5. The first part in this article has expounded the formulation about theory of approximations problems, and pointed out the research purpose and main contents of this thesis

    文中第一部分闡明了逼近論問題的提法，指出了論文的研究目的和主要內容。
  6. In particular, based on the complex analytical signal theory, the solutions for the components of a pulsed gaussian - like beam in rectangular symmetry are derived and compared with those derived from slowly - varying - envelop - approximations ( svea )

    本部分給出了時間波形為gauss 、 hyperbolicsecant和lorentz的脈沖光束奇異性的計算模擬，並給出了解決這些奇異性的復解析信號（ complexanalyticalsignal ）解。
  7. On the basis of the theory and knowledge of many learning branches such as fractal geometric, the percolation mechanics, the reservoir engineering, mathematic and physic method, numeric analysis method, compute graphic procession method, software engineering analysis method and so on, this thesis based on the developed research work, concludes the following a few facets to the unsteady seepage flow mathematical models in the pressure - sensitive deformable double media fractal reservoir. fractal geometric theory and method are good approximations to describe the complicity and we can more easily analyze all kinds of the pressure - sensitive deformable double media fractal complex reservoir relatively than others

    本文綜合運用分形幾何理論，滲流力學理論，油藏工程方法，數學物理方法，數值計算，計算機圖形處理技術，軟體工程的分析方法等方面的理論知識和應用技術，在已有研究成果的基礎上，對分形油藏作了以下幾方面的研究：一-一- -絲竺絲型進些絲燮竺鯉絲竺塑望絲些些竺色? （ l ）以m厄仃en一root模型為基礎，引入分形參數d了、 0和壓縮系數。
  8. One is the change of the operating environment and other unmeasurable disturbances. the other is that some simplifications such as model reduction and linear approximations are made during modeling due to the limitation of theory and technology. the difference is usually described as the uncertainties in control systems

    在實際工業過程式控制制中，一方面因為外部工作環境變化和各種不可測干擾的影響，另一方面因為受理論和技術的限制，在建模過程中經常要做一些簡化處理，例如高階系統的降階處理、非線性方程的線性化等，這些原因使得實際系統與用以分析與綜合的數學模型之間存在著一定的差別，在研究中一般將這種「差別」敘述為系統的不確定性。
  9. Application of the theory of moving frames leads to costruct symmetry - preserving numerical approximations to differential invariants and invariant differential equations

    通過應用活動標架理論，我們可以構造出微分不變量和不變微分方程的保對稱數值近似。
  10. At first, we describe the optical keer effect induced by the 3rd order nonlinear effect, then we introduce the nonlinear paraxial equation and b - t theory. after describing the approximations adopted to arrive at the paraxial equation, the limitations of b - t theory have been identified

    我們首先介紹了三階非線性引起的光克爾效應，由此引出了描述非線性介質中光傳輸的近軸波方程以及用於分析小擾動增長的b - t理論，同時敘述了近軸波方程的近似條件及b - t理論的不足。
  11. Then the model is simplified, the theory of martingale, simulation, and diffusion approximations are discussed firstly. these methods are applied in the model. then get some useful results, so we can estimate the upper bound for the ruin probability and the approximation of the finite time ruin probability

    並詳細的討論了模型有限時間內破產概率和最終破產概率的估計，應用隨機過程序列弱收斂，鞅以及隨機模擬等理論，得出一些有意義的結果? ?在有限時間內破產概率的逼近表達式；最終破產概率的上界和有限時間內破產概率上界；有限時間內破產概率的隨機模擬演算法；並得到最終破產概率滿足的泛函方程。
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