nonstationarity 中文意思是什麼
nonstationarity
解釋
不固定性-
Considering the characteristic of vibration of rotary machines, this thesis makes a thorough discussion of forecasting the trend of vibration by a means of time series model, puts forward means of processing the nonstationarity, nonnormality and singular value of the field data and distinguishing their models to build a appropriate model and gets precise mulstep forecast to the trend of vibration
針對旋轉機械的振動的特點，本文深入討論了利用時間序列模型預測振動趨勢的方法，並提出了如何處理現場數據的非平穩性，非正態性，奇異值和模型類型判別方法，以構建合適的模型，實現對振動趨勢進行準確的多步預測。 -
Discuss and analyze changing characteristic of berry phase, the berry phase is intimately connected with the nonstationarity of a quantum state
幾何相與量子狀態的非定態性有直接的聯系，定態沒有berry相。 -
This paper discusses mainly how to apply the varying coefficient regression model in the econometrics, fited by the varying coefficient model, we can not only obtain the well fitted value, but also can explore the nonstationarity in the economical structure explained
摘要文章主要討論了變系數回歸模型在計量經濟學中的應用，變系數回歸模型不但有很好的擬合效果，而且可以探討變量之間的經濟結構的非平穩性，這是經典的線性回歸模型所不能比擬的。 -
For the nonstationarity of the signal in field, eigenvector of fault is computed with newly advanced wavelet analysis, as the preprocessing in diagnosis procedure
考慮到現場中信號的非平穩性，採用新發展的小波分析工具，提取故障的特徵向量，作為診斷過程的預處理。 -
The traditional approaches for eeg signal processing are mostly on the time or frequency analysis. but due to the strong randomness and nonstationarity of eeg, the results obtained from those traditional methods are not very satisfying
但由於腦電信號隨機性和非平穩性都很強，這些時、頻分析方法就有其各自的局限性，很難得到令人滿意的結果。 -
The time series nonstationarity has relation to system and time scale with which researchers are concerned, and the research of nonstationarity focuses on the fields of the statistics, nonlinear science and time - frequency analysis now
摘要時間序列非平穩度不僅是系統特性的反映，還與研究者感興趣的時間尺度有關，目前相關的研究集中在統計學，非線性科學和時頻分析領域。 -
The analysis methods that the system adopts are introduced from the view of time - domain, frequency - domain and time - frequency - domain. emphasis is focused on the correlation integral analysis method. the measurement parameter of signal nonstationarity defined on the basis of correlation integral is discussed, and the feasibility that it is used to diagnose the faults of dynamic nonstationarity as the characteristic parameter is also investigated with a case
本文將系統中所實現的常規分析方法從時域分析、頻域分析和時頻域分析三個角度分類進行了說明，重點介紹了相關積分分析方法，探討了基於相關積分定義信號非平穩性的度量參數，並結合實例探討了該參數作為特徵參數診斷動態過程非平穩類故障的可行性。 -
As far as the nonstationarity during the long period operation of machinery was concerned, the application of adaptive linear element ( adaline ) neural network to prediction of nonstationary time series was studied. the relationship between adaline and auto regressive ( ar ) model was analyzed, and the method to determine the number of input neurons in adaline prediction model according to bic criteria was presented. the effect of the adaptive learning rate on prediction was also analyzed
針對生產實踐中設備運行的非平穩性，基於動態預測思想，研究了非平穩時間序列的自適應線性單元（ adaline ）神經網路預測，討論了adaline和自回歸（ ar ）模型之間的關系，提出根據ar模型定階方法確定adaline預測模型的輸入神經元數目，分析了自適應學習率對預測性能的影響，為機械設備狀態預測提供了一種方法。
分享友人