峭度 的英文怎麼說

中文拼音 [qiàodù]
峭度 英文
peakedness; kurtosis; excess; leptokurtosis
  • 峭 : 形容詞1. （山勢又高又陡） high and steep; precipitous2. [書面語] （嚴厲; 嚴峻） severe; stern
  • 度 : 度動詞[書面語] （推測; 估計） surmise; estimate
  1. Based on the sha lo wan profiler data at 0740utc, the vertical shear at around 1, 100 ft was close to 8 kt per 100 ft. although this was lower than the 8 kt per 100 ft which has been used in the windshear warning system at the old kai tak airport, the increase in head wind was nonetheless significant due to the steep climb angle

    根據沙螺灣的氣流剖析儀在0740utc錄得的資料顯示，在約1 ， 100尺的垂直切變接近每百尺每小時8海里。雖然此切變低於以往啟德機場的風切變警報系統所用的每百尺每小時8海里，但因為陡峭的爬升角度，令到逆風的增加變得顯著。
  2. A new kurtosis loose switching algorithms for blind source separation

    一種峭度寬松開關盲分離演算法
  3. An approach named component analysis based on kurtosis ( cabk ) was used to identify the overlapped peaks

    摘要基於峭度的組分分析方法用來解析重疊峰。
  4. This paper proposes an algorithm for fetal electrocardiogram ( fecg ) extraction, which is based on joint maximization of kurtosis and autocorrelation

    摘要針對胎兒心電圖提取問題，提出了一種基於峭度和自相關函數聯合最大化的演算法。
  5. One is the bss based on kernel density estimation ( kde ) and genetic algorithm ( ga ), the other is the blind deconvolution based on high order cross cumulants and ga. without nlf, the performance of separation in both algorithms is independent with the kurtosis of the sources

    兩種演算法的實現無需引入非線性函數，因此都與源信號的峭度性質無關;另外，選取全局搜索的遺傳演算法進行尋優，避免了梯度法搜索的局部性，使得演算法均能收斂到問題的全局最優解。
  6. Secondly, we propose a multi - user detection based on kurtosis. this method can suppress not only mai ( multiple - access interference ) but also isi ( inter - symbol interference ). all needs in the detection are only the desire user ' s spreading code

    並在此基礎上，提出了一種基於峭度的盲檢測方法，這種方法不但可以抑制多址干擾mai （ multiple - accessinterference ） ，還可以抑制符號間干擾isi （ inter - symbolinterference ） ，而且在檢測時只需要期望用戶的擴頻碼信息，是一種全盲檢測方法。
  7. The heuristic analysis, some concepts and theorems of constrained optimization are employed, e. g., linear feasible direction ( lfd ), and then the proof is first provided for the uniqueness, i. e., maximum nongaussianity is the sufficient and necessary condition to independent source recovery. moreover, based on the conclusion of the uniqueness of maximum nongaussianity, the paper also proposes an alternative but straightforward approach to the proof for the well known “ one - bit - matching ” conjecture presented in multi - unit approaches

    和基於啟發性分析等傳統方法和結論比較，文中引入了線性化可行方向（ linearfeasibledirection ， lfd ）等約束優化概念和理論，首次給出了基於峭度的最大非高斯估計的唯一性證明，指出最大非高斯估計是獨立源提取的充分和必要條件。
  8. Test results show the method is simple and effective and that kurtosisness is a satisfying diagnosis parameter

    試驗結果還表明，峭度指標是一個理想的診斷參數。
  9. A open - close mathematic model is introduced into calculation of torsional vibration. results show : kurtosisness and high harmonic will increase when crankshaft have crack. 5. cylinder score is also diagnosed by torsional vibration in this paper, when cylinder score occurring, the friction of piston will decrease the action of air pressure

    本文借鑒了裂紋轉子剛度的開閉模型，首次對含有變剛度單元的柴油機動力裝置進行了扭振計算，結果表明柴油機曲軸有裂紋后，扭振的角位移和附加振動力矩的高諧次分量會增加，峭度值增加。
  10. 5, using the method of virtual value. kurtosis, time domain averaging and so on to pick up equipment fault information, and processing data by the method of svm theory

    5 、利用有效值、峭度、時域平均分析等方法提取設備故障信息，並利用支持向量機（ svm ）理論進行機器學習演算法研究。
  11. Chapter 4 : applying the definitions of the generalized second and fourth order moments, the beam propagation m2 - factor and the kurtosis parameter of coherent and incoherent combinations of two - dimensional off - axis elegant hermite - gaussian ( ehg ) beams are derived analytically and numerically. and the power in bucket ( pib ) is also presented numerically. our results illustrate the propagation properties of the beam through a first - order optical abcd system

    第四章：討論了相干和非相干離軸完美厄密高斯（ eleganthermitegaussian （ ehg ） ）光束組的傳輸特性，通過解析推導和數值模擬，研究了相干和非相干的離軸ehg光束組的傳輸，得出並比較了相干和非相干的離軸ehg光束組的光束質量因子、陡峭度和筒內的功率（ powerinbucket ） 。
  12. Assume combustion pressure as pulse force, the kurtosisness of torsional vibration of diesel is steady when engine is " healthy "

    在正常發火情況下，扭振信號的峭度不一定按照正態分佈，但是對特定的柴油機裝置是穩定的。
  13. By adopting the vibration signal amplitude domain multi - parameter diagnosis method, the troubles of the valve on a triplex pump can be recognized accurately

    採用振動信號幅值域多參數（如峭度指標、裕度指標和脈沖指標等）診斷法，可較準確地判別三缸泵泵閥的故障。
  14. The fast ica algorithm based on kurtosis is applied successfully to separate the signals, and some valuable sound sources and the corresponding machine parts are extracted

    因此，採用基於峭度的快速獨立分量分析（ ica ）演算法，成功地分離出了信號的一些獨立成分及對應的發聲零部件。
  15. After reading many references, how to diagnose these faults using torsional vibration signal is studied in this paper. some satisfactory results are achieved in this paper : 1

    本文的主要研究內容和創新成果如下： 1提出了利用扭振信號的峭度分析來診斷柴油機單缸熄火故障的方法。
  16. In this paper, a new method of diagnosing cylinder misfire by using kurtosisness of torsional vibration is first introduced. kurtosisness is a parameter which is sensitive to pulse

    這一思路提出的來源於：峭度對大幅值和脈沖類信號比較敏感，根據柴油機燃燒的特點，可以假設氣缸壓力在一個在循環中為一個脈沖激勵。
  17. The frequently used parameters such as the power in bucket ( pib ), the beam width, the curvature radius, the far field divergence, the m2 - factor, the rayleigh length and the kurtosis are calculated in term of the intensity moments

    第二章用強度矩的方法研究了hchg光束，研究了hchg光束的pib系數、陡峭度在傳輸過程中的變化以及偏心系數b和厄米多項式階數m對光束質量的影響。
  18. In chapter 3, the elegant hermite - cosh - gaussian beams as another special case in hermite - sinusodiol - gaussian family is introduced and its propagation properties through a first - order optical abcd system are investigated. an analytical solution of the elegant herimite - cosh - gaussian beam propagating through a first - order abcd system is derived, and correspondingly, the closed - form m2 - factor, the beam width, the curvature radius and the power in bucket are presented analytically. the numerical investigations are carried out and show that the m2 - factor of elegant hermite - cosh - gaussian beam is greater than that of elegant hermite - gaussian beams and less than that of hermite - gaussian beams approximately

    本文得到的主要結果可歸納為：首次用強度矩的方法研究了hermite - cosh - gaussia （ hchg ）光束，得到了hchg光束的束寬、曲率半徑、 m ~ 2因子、瑞利距離等的解析表達式；用陡峭度和pib參數去衡量hchg光束的光束質量，找到了hchg光束在傳輸過程中影響光束質量的因素並得到了變化規律；證明了hchg光束在傳輸過程中的重心和對稱性都會得到保持。
  19. After analyzing the traditional methods of generating exciting signals in vibration control system of electrodynamic ( electrohydraulic ) shaker, a new method of adjusting the skewness and kurtosis of exciting signals by second phase modulation is proposed. based on this method, a new algorithm for generating super - gaussian and quasi - random vibration exciting signals with specified psd, skewness and kurtosis is proposed. simulation and experimental results validate the algorithm

    2 .通過分析目前電動（液）振動臺數字式隨機振動控制系統中廣泛採用的激勵信號生成原理，在其基礎上提出了一種通過二次相位調制來控制激勵信號峭度值和偏斜度值的方法，分別得到了頻譜可控的對稱和非對稱分佈超高斯偽隨機激勵信號生成演算法，並進行了數值模擬和試驗驗證，為研究頻譜可控的超高斯真隨機激勵信號生成技術奠定了基礎。
  20. Two common defects are founded in bss algorithms based on independent component analysis ( ica ) : the selection of none - linear function ( nlf ) in ica depends on the kurtosis of original signals, which degrades the performance of separation seriously when the observed signals are the mixture of super - gaussian and sub - gaussian signals

    2 .對一些現在流行的基於獨立分量分析的盲分離演算法進行深入研究后，發現其存在以下兩點共同缺陷:由於演算法中非線性函數的選取依賴于源信號的峭度性質，當觀測信號為超高斯和亞高斯混合信號時，分離演算法性能急劇下降。
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