漸近特性 的英文怎麼說

中文拼音 [jiānjìnxìng]
漸近特性 英文
asymptotic behavior
  • : 漸副詞(逐步; 漸漸) gradually; by degrees
  • : Ⅰ形容詞1 (空間或時間距離短) near; close 2 (接近) approaching; approximately; close to 3 (親...
  • : Ⅰ形容詞(特殊; 超出一般) particular; special; exceptional; unusual Ⅱ副詞1 (特別) especially; v...
  • : Ⅰ名詞1 (性格) nature; character; disposition 2 (性能; 性質) property; quality 3 (性別) sex ...
  • 漸近 : [數學] [物理學] asymptotic; approximation漸近操作(法) evolutionary operation; 漸近點 asymptotic...
  • 特性 : characteristic(s); character; performance; features; properties; behaviour; response; character...
  1. Firstly, by numerical and theoretical analysis, the author compares some existent confidence intervals, for example, " exact " confidence interval, wald confidence interval and bayesian confidence interval, and finds some deficiencies points of the confidence intervals, whose modification version has been proposed. also, several better confidence intervals such as are also presented. secondly, for given confidence coefficient and interval width, the author constructs a class of asymptotical two - stage interval estimate procedures. at the same time, under varies restriction of confidence coefflcientent interval width, the optional sample size of the first stage has been computed by numerical computation. the numerical computation shows that the method considered in this dissertation have good properties and applied value

    同時,由於poisson分佈的,我們知道不存在其參數區間長度小於0 . 5的置信區間,基於這些情況,我們主要展開了以下兩個方面的研究:一是利用數值計算分析與理論分析的方法對現有的若干置信區間如「精確」置信區間, wald置信區間, bayes置信區間等進行分析比較,發現了一些缺陷,針對這些缺陷,我們進行適當的修正,並得到幾種質較好的置信區間如:修正大樣本區間jeffreys原則下置信區間二是針對已給定的置信系數與區間長度,我們提出了一種的兩階段區間估計程序,並利用數值計算的方法,在各種置信系數與區間長度限定下,算出了最優的第一階段觀測次數(抽樣量) ,大量數據表明,本文考慮的方法態良好,具有應用價值。
  2. In the light of the recent work in biological models, especially in the chemostat models, the dissertation provides a systematic study on the asymptotical behaviour of some chemostat models built by delay or diffusion differential equations. the main contents and results in this dissertation are as follows : i ) the global asymptotic behavior of the chemostat model with the beddington - deangelies functional responses and time delays is studied. the conditions for the uniform persistence of the competing populations are obtained via uniform persistence of infinite dimensional systems

    本論文基於當前生物學模型,別是恆化器模型的研究現狀,深入系統的研究了時滯和擴散方程描述的幾類恆化器系統的態,本文的主要內容包括以下幾個方面:一、研究了具有beddington - deangelies功能反應函數的時滯恆化器模型,利用無窮維連續動力系統的一致持續生存的理論給出了兩競爭種群一致持續生存的充分條件,利用單調動力學系統得到了系統的全局穩定
  3. In the end, the impedance matrix of any three - dimensional conducting object can be portioned into sub - matrices by the projection iterative method ( pim ), the surface current and rcs can be calculated with convergent iterations, the wide - band electromagnetic scattering characteristics of three - dimensional conducting objects are also analyzed with the asymptotic waveform evaluation technique

    最後應用投影迭代方法( pim )將三維導體目標的阻抗矩陣剖分成小矩陣,通過迭代計算出表面電流和雷達散射截面,並與波形估計技術結合分析了三維導體目標的寬帶電磁散射
  4. In order to prove the existence of the periodic boucing solutions, firstly we will introduce a new coordinate transformation, transform the system from right half plane to the whole plane. and give the relation of the eigenvalues of hill ' s equation and the rotation numbers, using this approach and pioncar - birkhoff twist theorem, we proved the existence of the periodic bouncing solutions for asymptotical linear oscillator

    對于周期解的存在證明,我們引進新的坐標變換把右半平面上的碰撞問題轉化到整個平面上,給出旋轉數與hill方程的徵值的關系,並以此來度量振子,再應用pioncar - birkhoff扭轉定理得到周期碰撞解的存在
  5. ( 2 ) on the leading edge, the film cooling effectiveness at the zone immediately downstream of the cooling holes is affected by blowing ratio and mainstream reynolds number, while the effects are not important in the downstream zone far from the cooling holes. ( 3 ) on the front half of pressure surface, the effectiveness increases with decreasing blowing ratio at the downstream near the cooling row and it is contrary at the downstream far from the cooling row. ( 4 ) on the rear pare of the pressure surface, the effectiveness decreases with increasing blowing ratio and does not vary so much downstream in the cases of higher blowing ratio

    研究結果表明葉片吸力面端壁附區域壓力系數分佈呈現出較強的三維,動葉吸力面尤其明顯;氣膜孔流量系數隨吹風比的增加而增大,在高吹風比情況下,流量系數逐趨于常數;在不同型面區域,冷卻效率分佈有較大的差異,而且吹風比與主流雷諾數的影響程度也不盡相同;低吹風比下,孔出口下游附可以得到較好的冷卻,中、高吹風比下,冷氣射流在加速流動主流的作用下返回壁面進行二次冷卻,孔下游較遠區域可以得到較好的冷氣覆蓋。
  6. By choosing some appropriate exponential weight functions we prove that the essential spectra and the eigenvalues ( except the simple zero eigenvalue ) have negative real parts, thus we get the locally asymptotically exponential stability of travelling waves ( al ) and ( a2 ) in some weighted spaces

    通過選用合適的權函數,我們證得在加權空間線化運算元的本質譜和除簡單徵值零以外的徵值均具有負實部。因此,我們得到行波( a1 ) , ( a2 )在加權的l ~ 2 ( r )空間的局部指數穩定。
  7. The warping is found in terms of the 1 - d strains via the variational - asymptotical method ( vam ) and then cross - sectional stiffness for a gpr blade with arbitrary geometry and material property can be obtained

    根據1維應變,用變分方法建立翹曲位移,然後可以得到具有任意幾何形狀和材料的玻璃鋼葉片的橫截面剛度。
  8. Multi - channel deconvolution, based on multi - channel signal analysis, is presented to recover receiver function from three - component teleseismic p waveforms clustered within certain backazimuth and epicenter distance, to increase the resolution of receiver function. wavelet inversion is also introduced to broadband receiver function, to solve for nonuniqueness cased by linear approximation of nonlinear problem, and broadband receiver function is decomposed into multi - resolution versions, and the inversion result for the low - resolution version is iteratively taken as the initial model for the high - resolution, and gradually obtain the inversion model for broadband receiver function

    為克服廣義線反演對初始模型的依賴,並保持其快速收斂的點,本文首次將小波變換引入到接收函數波形反演,將接收函數分解到不同的分辨尺度上,分別進行廣義線反演,並將低解析度的反演結果作為高解析度反演的初始模型,地獲取寬頻帶接收函數的模型,克服了非線問題線化帶來的非唯一
  9. Recent years, the using of piezoelectric sensors becomes a focus in novel biosensors research. the basic principle is that the characters of its oscillation are highly responded with the changes of the surface mass adsorption, or the physic characters in the reaction system including density, viscosity, conductivity and so on. a piezoelectric biosensor with a nanogram sensitivity could be constructed through a reasonable biological processing and structure designing to the piezoelectric quartz crystal

    年來,壓電傳感器檢測技術逐成為生物分析中的研究熱點,其基本原理是利用石英晶體振蕩對石英晶體表面質量負載(質量效應)和反應體系物理狀如密度、粘度、電導率(非質量效應)等的改變具有高度敏感的,通過對石英晶體進行適當的生物學處理和結構設計,構建出具有具有ng級檢測能力的生物傳感器。
  10. For viscous shock waves c, by the spectral analysis we prove that in l2 ( r ) space the essential spectra and the eigenvalues ( except the simple zero eigenvalue ) of the linearized operator have negative real parts, thus we show that the viscous shock waves c is locally asymptotically exponentially stable in l2 ( r ) space

    對粘沖擊波c利用類似方法,我們證得在l ~ 2 ( r )空間線化運算元的本質譜和除簡單徵值零以外的徵值均具有負實部。於是,我們得到粘沖擊波c在l ~ 2 ( r )空間的局部指數穩定。
  11. Since in many situations the error term is not normally distributed, it is important to know the asymptotic properties ( large sample properties ), i. e., the properties of ols estimator and test statistics when the sample size grows without bound

    由於在很多情形下誤差項可能呈現非正態分佈,了解ols估計量和檢驗統計量的,即當樣本容量任意大時的就是重要的問題。
  12. This paper studies the corner layer behavior in quasi linear systems with turning points. under the appropriate conditions and by usin g the theory of differential inequality, the existence of the solution and its c omponentwise uniformly valid asymptotic estimation are obtained when the reduced solution does not have a continuous first - derivative in some point of ( 0, 1 )

    奇攝動轉向點問題是來自量子力學及其他物理力學中的重要問題,別對非線系統的轉向點問題,已有的結果甚少,文章研究一類具有轉向點的擬線系統的角層現象,在適當的假設條件下,利用微分不等式方法證明了當其退化解在( 0 , 1 )內某些點上一階導數不連續時解的存在,並得到了解的按分量的一致有效的估計。
  13. Subsequently, the special elastic coupling manner of the high - speed maglev is considered, and the restriction between the coupling factor of the single magnet module and other system parameters is studied. the influence of the coupling factor on the vehicle and guideway coupling vibration is also valued

    在此基礎上研究二維電磁鐵模塊系統的彈結構耦合因素,分析穩定條件下耦合系數與其它系統參數的制約關系,考察耦合參數對車軌耦合振動幅頻的影響。
  14. In this paper, the dynamic characteristics associated with the high - speed maglev vehicle and guideway coupling system has been studied. two issues are discussed : one is the asymptotic stability of the system and the other is the coupling vibration characteristic. the basic relation between the control, structure and coupling parameters is studied emphatically to trace the rule of the vibration and to give help for the design of guideway, vehicle structures and controller

    本文選擇高速磁浮列車系統懸浮方向的車軌耦合動力學作為研究對象,分析車軌耦合動力學的兩個基本問題:系統穩定和車軌耦合振動,重點研究控制、結構和各種耦合參數與這兩項系統的關系,目的在於尋找車軌耦合振動的規律,為軌道、車輛結構和控制器設計提供參考。
  15. But in more situations the random variables generating counting processes may not independent identically distributed, and in all kinds of dependent relations, negative association ( na ) and positive association ( pa ) are commonly seen. the research and apply in this aspect are rather valuable. in chap 2 we prove wald inequalities and fundamental renewal theorems of renewal counting processes generated by na sequences and pa sequences ; in chap 3 we are enlightened by cheng and wang [ 8 ], extend some results in gut and steinebach [ 7 ], obtain the precise asymptotics for renewal counting processes and depict the convergence rate and limit value of renewal counting processes precisely ; at last, in the study of na sequences, su, zhao and wang ( 1996 ) [ 9 ], lin ( 1997 ) [ 10 ] have proved the weak convergence for partial sums of stong stationary na sequences. however product sums are the generalization of partial sums and also the special condition of more general u - statistic

    但在更多的場合中,構成計數過程的隨機變量未必相互獨立,而在各種相依關系中,負相協( na )和正相協( pa )是頗為常見的關系,這方面的研究和應用也是頗有價值的,本文的第二章證明了na列和pa列構成的更新計數過程的wald不等式和基本更新定理的一些初步結果;本文的第三章則是受到cheng和wang [ 8 ]的啟發,推廣了gut和steinebach [ 7 ] )中的一些結論,從而得到了更新計數過程在一般吸引場下的精緻,對更新計數過程的收斂速度及極限狀態進行精緻的刻畫;最後,在有關na列的研究中,蘇淳,趙林成和王岳寶( 1996 ) 》 [ 9 ] ,林正炎( 1997 ) [ 10 ]已經證明了強平穩na列的部分和過程的弱收斂,而乘積和是部分和的一般化,也是更一般的u統計量的況,它與部分和有許多密切的聯系又有一些實質的區別,因此,本文的第四章就將討論強平穩na列的乘積和過程的弱收斂,因為計數過程也是一種部分和,也可以構成乘積和,這個結果為研究計數過程的弱收斂作了一些準備。
  16. For the single point suspending system, the double loops - pid control algorithm is given, the asymptotic stable range of the coupling system and vibration caused by the hopf bifurcation near the critical state and the nonlinearity of the system are researched first

    針對一維單點問題,給出了雙環pid控制演算法,研究了單點懸浮控制系統的穩定、 hopf分岔點附的振動和非線振動的幅頻
  17. An sm based identifier is presented to deal with the parameter identification problem for a class of parameter uncertain nonlinear dynamic systems with input nonlinearity. an smc algorithm is employed to ensure the global reaching condition of the sliding mode for the nonlinear system, and an identifier is designed to identify the uncertain parameters of the nonlinear system

    論文的主要內容如下:針對一類相對于輸入為非線的系統,設計了滑模變結構控制器保證非線系統的全局穩定,在此基礎上,考慮到系統運行在滑模面上時所具有的點,提出了一種基於滑模變結構控制的參數辨識方法來辨識非線系統的未知參數。
  18. As analyzing the electromagnetic scattering characteristics of two - dimensional electrically large conducting objects, the object is divided into some small regions by using spatial decomposition technique ( sdt ), but still consider the coupling effect among all the regions, the surface current and rcs of the object can be computed with progressive iterative numerical method ( pnm ). then the wide - band electromagnetic scattering characteristics of two - dimensional electrically large conducting objects are analyzed with the asymptotic waveform evaluation ( awe ) technique

    文中應用空間分解技術( sdt )將二維電大導體目標在空間中分解為若干子區域,考慮子區域間的耦合,採用累進迭代方法( pnm )快速計算表面電流和雷達散射截面,然後與波形估計技術( awe )結合分析了二維電大導體目標的寬帶電磁散射
  19. In the last few years, the polution and harm of harmonic hi the power system is becoming more and more serious. the lc passive filter that is used widely ca n ' t satisfy the new demands of harmonic filter. the combined system of shunt lc passive filter and active power filter are put forward, and this paper focus on the following four aspects. 1

    年來,電力系統諧波的污染和危害日趨嚴重,而國內普遍使用的lc無源濾波器逐不能適應濾波的新要求,本文提出了與可變參數lc濾波器混合使用的並聯型有源電力濾波器系統,並著重研究了以下幾個主要問題: 1 、 lc無源濾波器(主要是高通濾波器)參數調節對阻抗和無功補償的影響。
  20. In capter 2, it is proved that the system possesses a global attractor and a two - side estimate for the fractal dimension of it is presented. in capter 3, several different approximate intertial manifolds of the system are constructed by applying linear galerkin method, method of projecting operator and operator eigenvalue and successive iterative method, and it is proved that arbitary trajectory of the system enters into a small neighbourhood of the global attractor after large time. capter 4 studies the asymptotic attractor of the system by constructing a solution sequence which approaches to the global attractor of the equation in long time, and the dimentional estimate of the asymptotic attractor is given

    第二章證明了該系統的整體吸引子的存在,給出了其分形維數的上下界;第三章利用線galerkin方法、運算元投射和運算元徵值方法及逐次迭代方法構造了幾類似慣流形,證明了該方程的任意解軌道在長時間后進入整體吸引子的任意小鄰域;第四章構造了一個有限維解序列即該系統的吸引子,證明了它在長時間后無限趨于方程的整體吸引子,並給出了吸引子的維數估計
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