近似正態性 的英文怎麼說

中文拼音 [jìnsìzhēngtàixìng]
近似正態性 英文
approximate normality
  • 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...
  • 正 : 正名詞（正月） the first month of the lunar year; the first moon
  • 態 : 名詞1. （形狀; 狀態） form; condition; appearance 2. [物理學] （物質結構的狀態或階段） state 3. [語言學] （一種語法范疇） voice
  • 性 : Ⅰ名詞1 （性格） nature; character; disposition 2 （性能; 性質） property; quality 3 （性別） sex ...
  • 近似 : approximate; similar; approach; approximation; roughness; propinquity
  1. Collisonal quantum interference ( cqi ) was observed in the intramolecular rotational energy transfer in the experiment of the static cell, and the integral interference angles were measured. to observe more precise information, the experiment in the molecular beam should be taken, from which the differential interference angle can be obtained precisely. in this paper, the theoretical model of cqi is described in an atom - diatom system in the condition of the molecular beam, based on the first - born approximation of time dependent perturbation theory, taking into accounts the anisotropic lennard - jones interaction potentials. the method of observing and measuring correctly the differential interference angle is presented. the changing tendencies of the differential interference angle with the impact parameter, velocity, and et al. are discussed

    分子內部轉動傳能的靜態池實驗觀察到了碰撞量子干涉效應（ cqi ） ，並且測得積分干涉角，為了獲得更加精確的分子內部轉動傳能的碰撞量子干涉效應信息，實驗就必須要採用分子束實驗進行.本文理論上採用各項異性相互作用勢，應用含時微擾理論的一級波恩近似，假想在分子束實驗的條件下，建立在原子-雙原子分子體系中碰撞量子干涉的理論模型.理論上推導出微分干涉角具體表達式，通過計算定性地討論了微分干涉角隨著碰撞參數、速率等的變化趨勢，同時初步探討了實驗的正確觀測途徑，得出了採用分子束進行實驗觀測的實驗方法，為進一步進行分子束實驗提供了理論基礎，對實驗的進行起到了一定的借鑒作用
  2. Abstract : the theory of variable structure control of sing ular nonlinear control systems was considered based on the singular nonlinear systems itself by employing the method of geography, and gives the sufficient condition of existence of variable structure control and approximation theory of real sliding mode. it is shown that sliding condition only guarantee the slow - varying state of real sliding mode approach that of ideal sliding mode but not guarantee the fast - varying state of real sliding mode approach that of ideal sliding mode. the method applied for studying normal nonlinear system can not be used directely to singular nonlinear system

    文摘:利用幾何方法，從廣義非線性系統本身出發，研究了廣義非線性控制系統的變結構控制理論，給出了系統存在變結構控制的充分條件及實際滑動模的近似定理.從所得結論可知，滑動條件僅能保證實際滑動模的慢變狀態趨近於理想滑動模的慢變狀態，而不能保證實際滑動模的快變狀態趨近於理想滑動模的快變狀態，研究正常非線性系統的方法已不能簡單地被利用到廣義非線性系統
  3. The relativistic random phase approximation ( rrpa ) is a relativistic extension of the random phase approximation for studying microscopically nuclear dynamical excitations and giant resonances. the consistency of rrpa calculations requires two aspects : first, it demands that the relativistic mean - field wave " function of nucleus and the particle - hole residual interactions in the rrpa are calculated in a same effective lagrangian. second, the consistent treatment of rrpa within rmf approximation requires the configurations including not only the pairs formed from the occupied fermi states and unoccupied stat es but also the pairs formed from the dirac states and occupied fermi states

    自洽的相對論無規位相近似理論的自洽性要求有兩方面的內容：第一，描述原子核的激發態性質和基態性質時必須從同一個有效的拉矢量出發；第二，相對論無規位相近似計算，不但要考慮正能的粒子-空穴組態的貢獻，而且還要考慮從fermi海核子態到dirac海負能核子態形成的對激發的貢獻。
  4. Asymptotic normality of multi - dimension quasi - maximum likelihood estimate in generalized linear models with adaptive design

    自適應設計廣義線性回歸多維擬似然估計的漸近正態性
  5. The limit distributions of estimators and likelihood ratio test are given, the strong consistency of estimators is also proved

    證明估計的強相合性和漸近正態性，給出似然比檢驗統計量的極限分佈，並討論基於精確分佈的檢驗問題。
  6. Abstract : the sample breakdown point of a test is defined as the smallest proportion of arbitrary outlier in the sample that reverses the test decision. in this paper, wegive the sample breakdown point of a test for maximum likelihood estimate of exponential distribution parameter and analyze the asymptotically normal characteristic of the sample breakdown point

    文摘:如何量化一種統計方法對異常值的不敏感性一直是穩健統計研究的一個重要課題.檢驗的樣本崩潰點是樣本中能逆轉判決的離群值的最小比例.在研究相關文獻的基礎上，計算出指數分佈參數極大似然估計檢驗的樣本崩潰點，並分析了樣本崩潰點的漸近正態性，為量化統計方法的穩健性提供了一種新的途徑
  7. And beginning with a perturbed nls equation, using a multi - scales perturbation expansion, we get the zero order and the first order equations, discuss the eigenstates of the operator in the equations, induct relevant " derivative states ", form the completeness of the bounded eigenstates of the associated operator in li space, and expand the corresponding parameters in the closure, get a series evolution equations of the coefficients in the expanded formulas, find the first order approximate solution by researching the evolution equations. this paper also gives the basis of this method - the completeness we have formed and the singular perturbation technique

    ） dinser方程的求解問題，討論了自伴運算元的本徵函數的正交性和完備性，介紹了尋求微分方程的近似解常用的攝動方法，並從帶有某種擾動項的nls方程出發，利用多重尺度的攝動方法得到了方程的零級近似方程和一級近似方程，通過對近似方程中運算元的特徵態的討論，引入適當的「導出態」 ，建立了運算元在l _ 2空間的特徵態的完備性。
  8. In this paper, the limit theory is discussed and the main problems are solved as followed : 1. we will obtain asymptotic normality and consistency of mle for agarch model introduced by wu shuosi and fang zhaoben ( 2000 ). 2

    對于吳碩思和方兆本（ 2000 ）提出的非對稱廣義自回歸條件異方差新模型，證明了它的極大似然估計（ mle ）的漸近正態性和相合性。
  9. The definition of the maximum likelihood estimator with the prior information ( pmle ) is given in this paper, and the consistency and asymptotic normality of pmle are proved

    摘要定義了有先驗信息的極大似然估計，它能夠充分利用參數的先驗信息，還具有正規條件下的相合性和漸近正態性。
  10. In former design of gear strength reliability, both strength and stress approximatly dealt with normal distribution, its method had lower calculation precision

    在原先齒輪強度可靠性設計中，強度和應力均按正態分佈近似處理，計算精度較低。
  11. The probability density distribution of the particle velocity fluctuation differs in different flow regions, and is approximately normally distributed where the space restrictions are small. velocity fluctuation of particles with different sizes is similar

    顆粒脈動速度的概率密度分佈隨流區有所差異；在空間尺度影響較小的范圍接近正態分佈；各種粒徑的顆粒脈動速度具有相似的特性。
  12. The link failure probability is also formulated by utlizing a simple and accurate approximation to incorporate the effect of imperfect power control

    使用合併正態對數的近似方法推導出鏈路可靠性與非理想功率控制的關系。
  13. The coherent state is represented by a minimum uncertainty wave packet, the quantum correlation in these state is absent, so that it behaves as a quasi - classical state. it is such a property that leads to the results coincide completely with those obtained in semiclassical approximation

    正是因為相干態是一個量子力學允許的最小的測不準波包，沒有任何量子關聯，可以看作是一個準經典態，才導致了完全量子場論和半經典近似下理論結果的完全一致性。
  14. Two - order enhanced un - split finite volume euler method for multi - fluid flow, which combines the roe approximate riemann solver, is developed to simulate the multi - fluid interactions, such as the fluid described by polynomial eos, stiffen gas eos, jones - wilkins - lee ( jwl ) gaseous explosive eos, cochran - chan ( cc ) solid explosive eos and hom shock wave eos, etc. numerical results of the id, 2d and 3d multi - fluid interaction examples show that the high - resolution method and interface capturing equations can resolve the multi - fluid flow correctly and successfully. a simple fluid - mixture type ppm algorithm for multi - fluid flow, which is based on vof interface capturing method and resolved by langange / remap two steps, is developed to simulate the high density or high pressure ratio flow at both sides of the interface

    本文提出了實用於多介質流體的增強型二階精度有限體積歐拉數值計算方法，採用roe方法近似求解riemann問題，可以適用於多項式狀態方程、 「 stiffengas 」狀態方程、 jones - wilkins - lee爆轟產物狀態方程、 cochran - chan固體炸藥狀態方程以及hom狀態方程等，並對多介質流體相互作用的一維、二維、三維問題進行數值計算，數值驗證了本文給出的高精度差分格式和界面捕捉方法的正確性，兩種方法耦合形成的多介質流體數值計算方法是成功的。
  15. Abstract : a previously proposed approximate quasi - static theoretical method is employed herein to examine the deformation and perforation of a simply - supported circular plate struck by a flat - faced projectile at normal incidence. based on the principle of virtual work, static load - displacement relationships are first obtained and then used to predict the energy - absorbing capacity of the plate subjected to relatively low speed impact. it is shown that good agreement is obtained between the theoretical predictions and the available experimental data, provided that adiabatic shear plugging failure does not occur, but the influence of strain rate sensitivity is taken into account

    文摘:採用準靜態近似理論方法分析簡支圓板在平頭彈丸正撞下的變形和穿透.首先基於虛功原理得到了靜態荷載位移關系，並將其用於預測低速沖擊下圓板的能量吸收能力.當考慮了材料的應變率敏感性，並且不發生絕熱剪切沖塞破壞的前提下，理論預測和實驗結果吻合良好
  16. According to the characteristics of uwb standard channel models, we propose the concept of “ composite lognormal random variables ( rvs ) ”. based on this new concept, a new and precise approach is proposed to approximate the statistical distribution of lognormal rvs ’ sum, which places no restriction on the distributional parameters and correlation between the two branches. then, we

    在此基礎上，提出了一種新的對對數正態隨機變量和的統計特性進行近似的方法，該方法對變量的分佈參數和變量間的相關特性沒有任何限制，且精度較已有方法有了進一步的提高。
  17. We will give the asymptotic normality and consistency of mle for multivariate model with constant correlation introduced by bollerslev ( 1990 ). 3. moreover we will introduce the agarch model with non - normal distribution and have empirical study shows that the model suggested is feasible

    在多維的情形下，著重研究bollerslev （ 1990 ）提出的常數相關的多維garch模型的極大似然估計（ mle ）的漸近正態性和相合性。
  18. In this paper, we consider several classes of common ecological models such as predator prey model and epidemic model, and obtain uniform persistence and stability of the solution or the periodic solution by constructing appropriate lyapunov functional and using eigenvalue analysis to model ' s linear similar system at the equilibrium

    本文所研究的問題涉及到生態系統中有關捕食-被捕食系統、流行病模型等幾個常見的生態模型的定性分析，所採用的研究方法是通過構造合適的lyapunov泛函以及對模型的線性近似系統在其平衡態處的特徵根分析，獲得模型解或正周期解的一致持久和穩定的漸近性質。
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