零均值 的英文怎麼說

中文拼音 [língjūnzhí]
零均值 英文
zero mean
  • 零 : Ⅰ數詞1 （零數） zero2 （數的空位） zero sign （0）; nought 3 （表示沒有數量;無） nil; nought 4 （...
  • 均 : Ⅰ形容詞（均勻） equal; even Ⅱ副詞（都; 全） without exception; all
  • 均值 : [數學] mean value
  1. The numerical results show that the time domain response of the laminated plates induced by the in - line force of non - steady component oscillating flow is similar to harmonic motion with certain ribbon which is formed by period motion

    計算結果表明，零均值流量脈動流順流向作用力誘發反對稱角鋪設層合板的時域響應近似於具有一定帶寬的諧波運動，而這一帶寬又是由一定周期運動形成的。
  2. W is a zero mean white noise source.

    W是一個零均值的白噪聲源。
  3. By end of 1998, the nominal value of derivatives transactions had happened in the official exchange within 5 years increased from 7. 7 trillion u. s. dollars to 13. 5 trillion u. s. dollars, meanwhile, the nominal value of derivative securities ( otc ) increased from 8. 7 trillion u. s. dollars to 51 trillion u. s. dollars, then, the nominal value of unliquidated derivatives was total about 64 trillion u. s. dollars, and the academic field also emerged frontier science borrowing for the financial science, physics financial science, financial engineering, etc. 1973, black and scholes put forward the differential equation that any derivative securities prices based on any non - dividend paying stock must be satisfied, that is black - scholes differential equation

    Jamshidian . f在其1989年的文章中推導出零息債券的期權價格。奧托同樣在其1998年的論文中用統計物理學中的路徑積分方法推導出了基於零息債券為基礎的期權定價模型。本文在這些學者研究成果的基礎上，進行了更深層次的研究，在vasicek隨機模型的基礎上，打破上述學者及著名的black - scholes期權定價模型只能求解證券及其衍生產品價格平均值的限制，對零息債券和基於零息債券的期權的價格求解，並推導證券瞬時價格的分佈函數。
  4. W is a zero mean white noise source

    W是一個零均值的白噪聲源。
  5. If measurement errors occur randomly, one can expect their mean to approach zero.

    如果測量誤差隨機產生，可以期望他們的平均值近於零。
  6. Third, mensurated the front axle ' s load - time history when truck was running on general tar - paved roads, mountainous roads and the proving ground enhancement roads, second sampled and pretreated to the load - time history with rpc software of mts corporation, acquired the relationship of the frequence of the mean and amplitude load, obtained the zero mean equivalent loads using goodman experiential fatigue equation, acquired the weibull distributing functions of equivalent loads of respective roads

    第三，測定了汽車前橋在一般瀝青公路、山區公路和試驗場強化試驗路面的載荷時間歷程。對載荷時間歷程進行了二次采樣和數據預處理。採用雨流計數法得到了各路面的載荷均、幅值的頻次關系，並根據goodman經驗疲勞公式，得到了零均值的等效載荷及相應的頻次。
  7. On the base of the relativity and the data self - sealing characteristics of circular division measurement, an arbitrary measurement system on circular division and dihedral is built, and the processing method of the dynamic data zero average and the balancing based on self - sealing nature reference are also built

    在圓分度測量的相對性和數據自封閉特徵的基礎上，建立了基於圓分度和二面角測量的任意角測量系統，和基於自封閉自然基準的動態誤差數據零均值處理和平差處理方法。
  8. The following algorithms have been proposed and tested in the thesis : 1 frequency selective fading : combine the isomorphism between the input space and the output space and propose a new approach to blind equalization of the channel. compared with conventional methods, the new approach offers lower computational complexity, better performance, and more robust against the over - determination of the system order ; 2 time selective fading : a new approach to the equalization of time selective channel based on the zero - forced equalizer is proposed which is more simple in its structure of algorithm ; 3 time - varying channel : using the instantaneous mean value changes of the output signal to extract the information of channel variations and model it using ar model, kalman filter is then employed to track channel variations, it bears faster ability in tracking the variation of tv channels ; based on the isomorphism between the inputs and the outputs and some of the approaches using in mimo system, a new algorithm of equalization of simo time - varying channel is proposed, which also share the merits of being robust against the over - determination of the system order ; model the time - varying channel using the multi - resolution decomposition wavelets, and then a blind identification method based " on the model is proposed ; at last, a new model for equalization and identification of mimo system is proposed

    主要工作在以下幾個方面： 1 、針對頻率選擇性衰落通道：結合輸入輸出空間同構關系提出一種新的頻率選擇性通道均衡方法，與傳統方法相比，該方法計算量更小，收斂速度更快，性能更優，且對系統階次的過確定表現穩健，具有實際均衡應用價值； 2 、針對時間選擇性衰落通道：提出一種基於迫零均衡的時間選擇性通道均衡方法，演算法結構簡單； 3 、針對時變色散通道：利用瞬態均值曲線提取通道時變信息，對之ar建模，利用卡爾曼濾波器跟蹤時變通道抽頭變化，可以快速跟蹤通道變化；基於輸入輸出空間之間的同構關系以及多輸入多輸出系統的處理方法，提出了新的單輸入多輸出色散時變通道均衡與識別演算法，同樣具有對通道階次過確定保持穩健的優點；結合小波多解析度分析提出一種基於小波模型的通道盲識別演算法；研究時變的多輸入多輸出系統的盲均衡與盲反卷積問題，給出一種時變系統處理模型。
  9. The major work and achievement of this paper are presented as follows : ( 1 ) we review the main methods of audio retrieval at home and abroad

    對音頻信號的短時過零率、短時能量、 mel倒譜系數等進行主要分析。提出均值mfcc系數作為音頻特徵的方法。
  10. 3, game theory analytics has been applied to improve mean - variance method of h. m. markowitz in fields of zero - sum game and non zero - sum game

    3 、運用博弈分析方法對馬克威茨的均值一方差法在零和博弈和非零和博弈的范疇內進行了改進。
  11. During the research, ultrasonic signal testing system was designated by adopting transform the average value of function to nought, optimizing of collection frequency and transducer frequency

    在研究過程中，採用零均值化、優化采樣頻率與探頭頻率的匹配等對超聲信號頻譜分析系統進行了標定。
  12. When the radar is narrow band, radar target is studies as a point target. target and clutter are modeled as having a zero - mean complex gaussian probability density function ( pdf ). target is assumed as slowly - fluctuant

    窄帶條件下，雷達目標可以看作是一個點目標，假設目標和雜波都服從零均值的復高斯分佈，目標為慢起伏。
  13. Testing of multi - dimensional normal population with mean zero

    多維正態總體零均值的假設檢驗
  14. The results show that the ionosphere - weighted model or the tropospheric estimation, integrated with the partly - weigthed least squares, can improve, the success rate and the reliability of ambiguity resolution ; however, if the ionospheric delay or the tropospheric delay, which is modeled on random walk process or first - order gauss - markov process, is estimated with the kalman filter, it will reduce the success rate and the reliability of ambiguity resolution

    將電離層延遲作為零均值的隨機遊走過程（電離層加權模型） ，將對流層延遲作為靜態參數，採用非遞推形式的加權最小二乘法來估計，可以提高模糊度解算的成功率和可靠性。
  15. Assuming that the earthquake ground motion is a zero mean valued non - stationary random excitation, the higher accuracy numerical algorithm of these complex oscillators were developed in virtue of the principle of pseudo - excitation method

    通過假定地震地面運動為一零均值的非平穩隨機激勵，應用虛擬激勵法原理，推導得到了廣義復振子動力坐標計算的一般公式，進而得到了非比例阻尼線性體系非平穩隨機地震響應計算的一般解答。
  16. The author makes a stabilized and zero mean treatment of the statistic data on the per capita annual net income of henan farmers between 1978 and 2005, and using the property of the autocorrelation function and partial autocorrelation function of time sequence, establishes the model appropriate for the data

    摘要筆者根據河南省1978年2005年的農民人均純收入統計數據，將這些數據進行平穩化、零均值化處理，並利用時間序列的自相關函數，偏自相關函數的性質，確認數據所適合的模型。
  17. The cyclic estimation approaches of chirp signals in additive nose or multiplicative noise are proposed, it presents a way for the parameters estimation of zero mean amplitude chirp signals. the estimation performances in the additive noise or multiplicative noise are analyzed by the first order perturbation analysis method, and the error variance expressions of the parameters estimation under large samples are derived

    針對加性噪聲情況及存在乘性噪聲的情況，提出了線性調頻信號參數的循環平穩估計方法，解決了零均值乘性噪聲的信號參數估計問題，並採用一階擾動分析方法，對兩種噪聲情況下的估計性能進行了分析，推導出了各參數的估計誤差方差公式。
  18. In this paper, a new spectral subtraction method is presented, which breaks the assumption that the noise is gaussian distribution with mean 0 in the original spectral subtraction method

    本文針對譜減法中關于噪聲是零均值的高斯分佈的假設，提出了一種可以打破這一假設的改進譜減演算法。
  19. Analysis performance expressions of the bit error rates are derived, and logsitic map with zero mean is used for chaos generation in simulation

    推導該方案的理論誤碼性能，以零均值logistic混沌映射為例進行模擬實驗。
  20. Two - levels and three levels algorithms are discussed in the more general system, which has control input and in which the processing noise and measurement noise are correlated gaussian white noise with nonzero mean

    針對存在控制輸入、過程噪聲與觀測噪聲相關且為非零均值高斯白噪聲的多傳感器系統，推導了二級、三級融合演算法。
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