逼近論 的英文怎麼說

中文拼音 [bījìnlún]
逼近論 英文
theory of approximations
  • 逼 : Ⅰ動詞1 （逼迫; 給人以威脅） compel; force; drive; threaten 2 （強迫索取） extort; exert pressure ...
  • 近 : Ⅰ形容詞1 （空間或時間距離短） near; close 2 （接近） approaching; approximately; close to 3 （親...
  • 論 : 論名詞（記錄孔子及其門徒的言行的「論語」） the analects of confucius
  • 逼近 : 1 （靠近 接近） press on towards; gain on [upon]; approach; crowd on; close in on; draw near 2 [...
  1. Some properties of polynomial mollifier are presented and the conclusion that polynomial can consistently approximate continuous function is proved

    給出多項式軟化子的幾個性質，並由此證得用多項式一致逼近連續函數的結論。
  2. We will regularize the equations by the standard mollifier to get the approximate solutions. then by making uniform estimates to the approximate solutions and by passing to the limit, we obtain the local existence for the above problem. then, based on the local existence of the classical solution, we discuss the blow - up criterion

    我們主要研究了此方程組古典解的局部存在性，爆破準則以及通過粘性消失方法來研究如上方程組的局部存在性和收斂率問題，主要結論有： （ 1 ）解的局部存在性利用光滑子對方程組進行正則化，從而得到原方程組的逼近解。
  3. Secondly, a new adaptive osculatory rational interpolation kernel function is constructed from the point of approximating the ideal interpolating function, the function ' s characteristics, i. e., the space properties, the spectral properties, and the efficiency are analyzed, and the comparision it with other interpolation methods is made

    然後，在圖像采樣和圖像重建理論的基礎上，基於逼近理想插值核函數的思想，構造了一種自適應切觸有理插值函數，對其空域和頻域的性能進行了分析，並與傳統的圖像插值核函數進行了比較。
  4. In chapter five, the research work focus on color gamut transform correction in panel display. a method of color gamut transform correction which introduces the concept of virtual gamut space is presented to solve the problem of luminance and chromic disuniformity which arises from the differentia of chromic and drive characteristics of each module or pix on the same display panel. and the high quality of image displayed on the panel is ensured

    提出了克服同一種平板顯示屏由於各個顯示模塊（顯示象素）的色度空間特性和中國科學院長春光學精密機械與物理研究所博十學位論文基十擬合逼近理論的平板圖像顯示技術研究基色驅動顯示特性的差異而造成的平板顯示屏色度和亮度分佈不均的有效方法，解決了平板顯示屏的全屏幕亮度、色度一致化的問題，保證了高質量視頻圖像的顯示。
  5. 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。
  6. The necessary and sufficient condition for centrosymmetric solution of matrix equation was presented and general solutions were obtained. the optimal approximation solution to a given matrix was provided in the solution set

    先討論一類矩陣方程存在中心對稱解的充分必要條件，給出解的一般表達式，並在解集合中給出了與給定矩陣的最佳逼近解。
  7. In addition, the problem of using anti - centrosymmetric matrices to construct the optimal approximation to a given matrix is discussed, the necessary and sufficient conditions about the problem are derived, and the expression of the solution is provided

    並討論了用反中心對稱矩陣構造給定矩陣的最佳逼近問題，給出了該問題有解的充要條件和解的表達式。
  8. The nurbs curves and surfaces approximation to constrained data sets is discussed in this dissertation. the major works are as follows : firstly, based on simulated annealing algorithm and least square principle, a nurbs curves approximation algorithm to constrained discrete data sets is presented

    本文討論了帶約束的離散點集的nurbs曲線、曲面的逼近問題，主要工作如下： 1基於模擬退火演算法和最小二乘法，給出了帶插值條件的離散點集的nurbs曲線逼近的演算法。
  9. In chapter two, we consider full disceret scheme of mixed finite element methods for the following initial - value problems of linear integro - differential equations of parabolic in this chapter, we give the error analysis of this full discrete scheme and get optimal error estimates for the discrete solutions of u and p

    第二章討論下述線性拋物型積分微分方程初邊值問題混合有限元方法的后差全離散格式。給出了該全離散格式的誤差分析，得到了離散解逼近未知函數u以及伴隨速度p的關于空間和時間的最優階誤差估計。
  10. This paper mainly focuses on the noise limiting by means of the direct sequence spread spectrum ( dsss ) and the analysis of the transmission performance of the plc and some digital modulation technology. the contents of the paper is as follows : 1 ) the technical feasibility is proved after simulating noise limiting principle of dsss by means of systemview, the simulation software ; 2 ) a kind of band pass filter ( bpf ) is realized according to the requirement of filter and the principle of butterworth approximation, which satisfies the index of performance of dsss. 3 ) the low voltage plc system includes the sc1128, the specific modulation / demodulation ic, the bpf filter and other circuit components, furthermore, the control function of system is realized by means of the personal computer and the microcontroller

    本課題在對低壓電力線的傳輸特性和數字調制技術進行分析的基礎上，將通信理論中的直接序列擴頻技術（ dsss ）用於解決低壓電力線通信的干擾問題，主要研究內容如下： （ 1 ）用通信模擬軟體systemview對dsss技術的通信和抗干擾原理進行模擬分析，分別對時域和頻域下採用dsss技術前後接收信號的頻譜進行分析，驗證dsss技術在本系統中的可行性； （ 2 ）由dsss技術對濾波系統的要求，根據濾波理論分析了巴特沃思型濾波器的逼近原理並設計了合適的濾波電路； （ 3 ）用調制解調晶元sc1128和自行設計的濾波器加之輔助外圍電路，構造出低壓電力線載波通信系統，並採用atmel公司的單片機設計了接收和發射電路的微控制器； （ 4 ）分別對採取抗干擾措施前後輸入和輸出信號進行對比實驗，並對結果進行分析，驗證了dsss技術對干擾信號的抑制作用。
  11. Finally, in the third section, by constructing some functional which similar to the conservation law of evolution equation and the technical estimates, we prove that in the inviscid limit the solution of generalized derivative ginzburg - landau equation ( ggl equation ) converges to the solution of derivative nonlinear schrodinger equation correspondently in one - dimension ; the existence of global smooth solution for a class of generalized derivative ginzburg - landau equation are proved in two - dimension, in some special case, we prove that the solution of ggl equation converges to the weak solution of derivative nonlinear schrodinger equation ; in general case, by using some integral identities of solution for generalized ginzburg - landau equations with inhomogeneous boundary condition and the estimates for the l ~ ( 2 ) norm on boundary of normal derivative and h ~ ( 1 ) ' norm of solution, we prove the existence of global weak solution of the inhomogeneous boundary value problem for generalized ginzburg - landau equations

    第三部分：在一維情形，我們考慮了一類帶導數項的ginzburg ? landau方程，通過構造一些類似於發展方程守恆律的泛函及巧妙的積分估計，證明了當粘性系數趨于零時， ginzburg ? landau方程的解逼近相應的帶導數項的schr （ ? ） dinger方程的解，並給出了最優收斂速度估計；在二維情形，我們證明了一類帶導數項的廣義ginzburg ? landau方程整體光滑解的存在性，以及在某種特殊情形下， gl方程的解趨近於相應的帶導數項的schr （ ? ） dinger方程的弱解；在一般情形下，我們討論了一類ginzburg ? landau方程的非齊次邊值問題，通過幾個積分恆等式，同時估計解的h ~ 1模及法向導數在邊界上的模，證明了整體弱解的存在性。
  12. Verdu derives the ideal of multi - user detection in 1986. the multiple access interference, he deemed it has available information in certainly structure. adopted by the mlsd in the theoretical, it has many good abilities, such as its capability close with the single user ' s, near - far resistance, raised the capacity of the system. thereby come to operate the mud ' s research

    1986年， verdu提出了多用戶檢測思想，認為多址干擾是具有一定結構的有效信息，理論上證明了採用最大似然序列（ mlsd ）可以逼近單用戶接收性能，並有效地克服了遠近效應，大大提高了系統容量，從而開始了對多用戶檢測的研究。
  13. The study of direct and inverse theorems on the approximation of linear operators to functions in normed linear spaces is an important subject in the approximation theory. it is significant in theory and application

    線性運算元對賦范線性空間中函數逼近正逆定理的研究是逼近論中重要的研究課題之一，在理論和實際應用上都具有重要的意義。
  14. 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。
  15. 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。
  16. Sui yunkang and yang zhiguang, modified newton method and dual method through a rational approximation at two expanded points, engineering optimization, vol. 24 ( 1995 ) : 1 - 17

    隋允康，結構優化的曲線尋優理論及其逼近論和常微分方程組解法，中國學術期刊文摘， 1卷2期（ 1995 ）
  17. Conditions that a class of sequence has convergent subsequence arc discussed in the paper, this sequence is important in function approximation. the gained conclusions are useful in some relative areas

    摘要文章討論了在函數逼近論中有重要作用的一類序列存在收斂子列的條件，文中所得結論在相關問題的研究中有較重要的作用。
  18. There are many important applications in approximate theory, control theory and variation inequalities etc. according to the requirement of various subjects and applications, orlicz spaces is extended from the classical spaces lp

    一致凸是banach空間的重要幾何概念，其在逼近論、控制論、變分不等式等領域有著重要的應用。
  19. The paper applies algebraic geometry, computational geometry, approximation theory to study the following problems : the nother type theory and the riemann - roch type theory of the piecewise algebraic curve ; the number of real intersection points of piecewise algebraic curves ; the real piecewise algebraic variety and the b - net resultant of polynomials

    本文應用代數幾何，計算幾何，函數逼近論等學科的基本理論，分別就分片代數曲線的n （ ? ） ther型與riemann - roch型定理；分片代數曲線的實交點數；實分片代數簇以及多項式的b -網結式進行研究。
  20. This paper discuss a modeling and predicting means for nonlinear systems proceeding from nonlinear systems modeling and predicting theory, whch is based on drnn model. this means overcomes the fact that ar model is used only in linear systems, at the same time it connects itself with approximation theory symbolic statistics and conjugate gradient algorithm, and formulate a system of large watercrafts motion modeling and predicting which is based on drnn model, and simulate it

    本論文從非線性系統建模與預報的理論及應用觀點出發，系統地闡述了一類適用於非線性系統的建模預報方法? ?基於drnn模型的建模預報方法，克服了ar模型僅局限於線性的情況，同時結合逼近論、數理統計等知識，運用共軛梯度演算法，提出並建立了基於對角回歸神經網路的大型艦船運動建模預報系統，並進行了模擬。
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