指數積分函數 的英文怎麼說

中文拼音 [zhǐshǔjīfēnhánshǔ]
指數積分函數 英文
exponential integral function
  • 指 : 指構詞成分。
  • 數 : 數副詞（屢次） frequently; repeatedly
  • 積 : Ⅰ動詞（積累） amass; store up; accumulate Ⅱ形容詞（長時間積累下來的） long standing; long pending...
  • 分 : 分Ⅰ名詞1. （成分） component 2. （職責和權利的限度） what is within one's duty or rights Ⅱ同 「份」Ⅲ動詞[書面語] （料想） judge
  • 函 : 名詞1. [書面語] （匣; 封套） case; envelope 2. （信件） letter 3. （姓氏） a surname
  • 指數 : 1. [經] （比數） index number; index 2. [數學] exponent
  • 積分 : 1. [數學] integral; integrate; integration 2. [體育] （積累的分數） accumulate points
  • 函數 : [數學] function函數計算機 function computer; 函數計算器 function calculator; 函數運算 functional operation
  1. First, in virtual of identification of flaws is a typical of in - verse problems, proceeding from time - harmonic electromagnetic maxwell ' s equa - tion and helmholtz equation, the uniqueness and existence of direct scattering problems including the numerical algorithms of diverse of boundary conditions is given. second, the uniqueness and existence of inverse scattering problems and the theory of ill - posed integral equation are briefly looked back upon. finally, indicator function method for boundary identification is set up under all kinds of boundary conditions for inverse scattering of homogenous and inhomogenous objects, meanwhile, the proof of possibility for near - field measurements and nu - merical simulation are given

    由於缺陷的識別是一類典型的反問題，因而首先從時諧電磁maxwell方程和helmholz方程出發，具體地闡述了求解正散射問題的有關方法，包括各種（夾雜）邊界條件下的數值解法，就解的存在性唯一性給予了肯定的回答；隨后對逆散射問題的理論作了簡短的回顧，包括解的唯一性以及非線性不適定積分方程的處理等；然後對均勻介質和非均勻介質的逆散射問題建立了在各種邊界條件下的邊界識別的指示函數方法，鑒于近場數據獲得的重要性，對近場測試時邊界識別的方法給予了相應的證明，並且實現了數值模擬。
  2. From mathematical models for inverse scattering in two dimensional inho - mogenous media including variable impedance, all kinds of probable mixed variable impedance boundaries and cracks, from interior and exterior trans - mission problems and radiation condition, ill - posed integral equation and indicator function method are formulated for the diverse of boundary iden - tification. it is shown that the kernel of the integral equation characters the boundary of scatterer, which is determined by solving it by virtual of regularity method, meanwhile, some numerical tests are given. 3

    在二維非均勻介質逆散射邊界識別的數學模型（包括一般的非均勻介質，正交各向異性介質，變阻抗介質，各種可能的混合變阻抗邊界問題）下，由內透射問題和外透射問題以及輻射條件，推導了上述介質的邊界識別的積分方程和指示函數方法，由於積分方程的核充分表徵了散射物的邊界，由此說明只要利用正則化方法求解該積分方程，就可以確定散射物的邊界。
  3. From mathematical models for inverse scattering in two dimensional homoge - nous media including dirichlet, neumann, robin, all kinds of probable mixed boundaries and cracks, direct and inverse scattering are discussed, and ill - posed integral equation and indicator function method are formulated for the diverse of boundary identification. it is shown that the kernel of the integral equation characters the boundary of scatterer, which is determined by solv - ing it by virtual of regularity method, meanwhile, some numerical tests are given. 2

    在二維均勻介質逆散射各種邊界識別的數學模型（包括dirichlet ， neumann ， robin ，各種可能的混合邊界問題，裂紋問題）下，分別考慮了正散射問題和逆散射問題，推導了上述各種邊界識別的不適定積分方程以及指示函數方法，由於積分方程的核充分表徵了散射物的邊界，由此說明只要利用正則化方法求解該積分方程，就可以確定散射物的邊界，並給出了一些數值實驗。
  4. In regard to research method, this paper adopted properties combining the qualitative and quantitative supply chain, and evaluated supply chain informationization. membership function, regular trapezium fuzzy mathematics, integral fuzzy mathematics and triangle fuzzy ahp were used to build up in index system. this paper innovated in the following points

    在研究方法上，本文基於定性和定量相結合的原則，運用模糊數學的隸屬函數、正梯形模糊數、積分解模糊法等來對評價體系中的指標進行評價並量化，並綜合運用模糊數學的方法對供應鏈的信息設備利用率進行評價計算，最後運用基於三角模糊數的模糊ahp方法，來對供應鏈的信息化水平進行綜合評價。
  5. The dissertation refers to comparatively full literatures in the field of vsc, and the development history and characteristics of vsc are summarized, and the elementary concepts, elementary definitions, elementary properties, elementary principles and design methods are particularly introduced, and the causes of the chattering phenomenon are systematically analysed, and the study status of the chattering phenomenon and the main methods to eliminate the chattering are elaborated. for the deficiencies of traditionary methods, three improved methods are developed, which are improved exponent reaching law solution, variable boundary layer solution and the solution by adding an auxiliary continuous control term. for uncertain linear systems, an adaptive fuzzy integral variable structure control stategy ( afivsc ) is put forward to eliminate the chattering around the sliding plane, which introduces fuzzy logic to soften the non - linear discontinuous sig nal in the control variable and utilizes adaptive theory to adjust output membership function according to how much the uncertainty of the system is

    比較全面地查閱了關于變結構控制理論的文獻，總結了滑模變結構控制的發展歷史和特點，詳細介紹了變結構控制的基本概念、基本定義、基本性質、基本原理以及設計方法；系統分析了變結構控制系統抖振產生的機理，並闡述了國內外目前對抖振問題的研究現狀以及消除抖振的主要方法；針對傳統抑制和消除抖振方法的不足，改進了傳統方法，得到了三種新的消除抖振的方法? ?即改進的指數趨近律法、可變邊界層法和附加連續項法；針對不確定性線性系統，在變結構控制策略中引入模糊邏輯和自適應理論來消除滑動平面上的抖振，提出了一種自適應模糊積分變結構控制方案（ afivsc ） ，利用模糊邏輯來柔化控制量中非線性不連續部分，採用自適應理論，根據系統不確定性大小在線調整模糊輸出量的隸屬函數，另外，鑒于模糊控制本質上是有靜差的，所以本文選擇了帶積分項的切換函數，由於積分項的存在使系統較正為無靜差系統。
  6. The minimum square method was used in regressing analysis for the result of treatment in a supposed distribution function, the " d " examination method was used for weibull distribution and index distribution, and obtained the distribution type in the life of the main shaft bearings, appraised the reliability life, the mean life and the reliability in 500hours of the main shaft bearings with theoretical distribution function

    用殘存比率法、平均故障法和累積故障法對主軸軸承可靠壽命進行了評估，用最小二乘法對現場數據統計處理結果進行了假設分佈的回歸分析，並用d檢驗法對威布爾分佈和指數分佈進行了分佈檢驗，得出主軸軸承壽命分佈類型。利用理論分佈函數，對主軸軸承可靠壽命、平均壽命、 500小時的可靠度進行了評估。
  7. In the analysis process, the six main peaks in 88 - 100 kev region, including the y peaks of 234th, the k peaks of th and the k peaks of u, are chosen. the smoothly joined gaussian function and low energy exponential tail is taken as peak shape function and quadratic polynomial is taken as background function. the two functions are fitted to gether to calculate the peak area

    在分析過程中，選擇了88 - 100kev能區的~ （ 234 ） th的射線峰， th的k _射線峰以及u的k _射線峰共六個主要能峰，通過採用高斯函數和低能指數尾部光滑聯接的峰形函數和二次多項式本底函數一起擬合，來求出峰面積；而該能區所有能峰的探測效率可以認為是近似相等的，由此得到鈾富集度。
  8. Analyzed result on observed data shows that runoff erosivity and sediment transport modulus have a good power function ( y = mxn ) relationship. all the correlation coefficients of regression equation are bigger than 0. 9 in different watershed and power exponent b is 0. 4 - 0. 65, which average is 0. 52. and n is bigger as harness degree high

    實際流域的觀測資料分析結果表明：徑流侵蝕力與輸沙模數之間有很好的冪函數（ y = mx ~ n ）關系，回歸方程相關系數均在0 . 9以上，關系式中冪指數n在0 . 4 - 0 . 65之間，平均為0 . 52 ，治理度越高， n值越大，而參數m與流域面積和治理度有關， m值隨著流域面積的增大和治理度的提高而減小。
  9. This paper introduces three theorems. by using the theorem, we can easily calculate the limit of integral upper limit function and power function

    摘要介紹了三個定理，利用這三個定理在求解有關積分上限函數的極限及冪指函數的極限時更加簡便。
  10. According to the wind speed distribution function with exponential rule, the difference value is accurately calculated between the actual wind power produced through the rotor swept area and the wind power produced by taking wind speed at the rotor centre as the design wind speed, and the power increment is obtained

    摘要根據指數律的風速分佈函數，對風輪掃掠面積上的實際風功率與以風輪中心風速為設計風速產生的風功率的差值做精確計算，得到了風功率的增量。
  11. Taking erectophile type continuous vegetation as a example, authors had done many monte carlo simulations, and established empirical analytic expressions of radiances with component temperature, soil emissivity and leaf area index. empirical analytic expressions were used to construct objective function and genetic algorithm was employed to synchronously retrieve 5 parameters, such as component temperature, soil emissivity and lai, from thermal infrared 2 channels and 2 angles data. many experiments of genetic algorithm inversion from simulated data were conducted, results show that it is very robust to retrieve component temperature using genetic algorithm ; genetic algorithm can cope with uncertainty inversion problem pretty well if full advantage of priori knowledge was taken. comparison between inversion results and ground - truth data has been done. this paper offers a new example to retrieve component temperature from multi - channel, multi - angle thermal infrared data based on the model of directionality of thermal radiance

    在熱輻射方向性規律的基礎上，以喜直型連續植被為例，進行了大量的monte carlo模擬，建立了輻射亮度和組分溫度植被葉面積指數及土壤比輻射率之間的經驗函數關系。採用遺傳演算法，從熱紅外2個波段2個角度數據中，同時反演混合像元組分溫度土壤比輻射率和葉面積指數等5個參數。通過對模擬的觀測數據進行大量的遺傳演算法反演試驗，結果表明，遺傳演算法反演組分溫度非常穩健，在寬松的先驗知識條件下，遺傳演算法可以解決不確定性反演問題。
  12. 2. using techniques of liapunov functions and inner products, we extend the approach and the results in part i and give criterion on the stability, asymptotic stability and exponential stability with respect to partial variables for time - varying nonlinear systems

    二、仍然使用上述方法再加上liapunov函數及內積等技巧，研究了非線性時變系統對部分變元的穩定性、漸近穩定性、指數穩定性，推廣了第一部分結果。
  13. This paper mainly discusses the periodic solutions of some integral and differential equations with infinite delay. the studies of the existence and uniqueness of the periodic solutions and the stabilities of these equations have attracted great concern in recent years and many good results have been obtained. this paper has further extended these conclusions on the foundations of them, and obtained some new results with the method of exponential dichotomy, fixed point theorem and liapunov functional respectively

    本文主要討論具有無窮時滯積分微分方程的周期解。對于這類方程周期解的存在唯一性和穩定性的研究近年來已經引起人們極大的關注，也得到了若干很好的結果。本文主要是在這些結果的基礎上將已有結論做了進一步的推廣，分別用指數型二分性，不動點定理， liapunov泛函的方法得到一些新的結論。
  14. Under the same working pressure and flow rate, the flow passage length and cross - section area of the seven different emitters were compared. according to those results, the anti - clogging ability of emitters was analyzed and several good structural form of flow passage were obtained. in addition, regression model describing the relationship among flow rate, the length of flow passage and work pressure was set up

    比較了不同結構形式滴頭的流態指數和相同工作壓力和流量下的流道長度與流道截面積，分析了其抗堵塞性能，得出了較佳的幾種流道結構，並建立了描述滴頭流量與工作壓力及流道長度之間關系的函數模型。
  15. This paper describes the feature of riemann integratiable function, and point out that the space of riemann integratiable function is not perfect under the meaning of lebesgue integral

    摘要綜述了黎曼可積函數的基本特徵，並指出黎曼可積函數列的極限運算在積分意義下是不封閉的。
  16. Two kinds of mathematical models of the forklift truck in intensive test and their formulas of parameters estimation are established ; thereby the cumulative failure strength function of the forklift truck in intensive test is obtained. the author also applies the related - index - method ( rim ) to verify the analysis results

    本文運用隨機過程理論，根據可靠性強化試驗叉車故障數據的特點，建立了可靠性強化試驗叉車的可靠性數學模型，推導了其參數估計公式，從而得到了可靠性強化試驗叉車的累積故障強度函數，並運用相關指數法對分析結果進行了驗證。
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