查询词典 stationary function

To build an appropriate mathematic model of the random drift of flexible gyro ,two methods are discussed,using non-stationary time series analysis and using stationary time series analysis based on wavelet discomposition.

以挠性陀螺的随机漂移为研究对象，采用非平稳时间序列分析法和基于小波分解的平稳时间序列分析法，建立相应的随机漂移模型。

Some non-stationary time series can be decomposed into several approximate stationary time series with wavelet decomposition.Decomposed time series are forecasted with auto-regression model,to obtain forecasting results of the original time series.

通过小波分解可以将某些非平稳时间序列分解成多层近似意义上的平稳时间序列，然后采用自回归模型对分解后的时间序列进行预测，从而得到原始时间序列的预测值。

Through ARIMA model and standardization, the non-stationary vibration series acquired in the field were transformed to stationary time series normally distributed.

将现场测得的非平稳振动序列通过ARIMA模型和标准化处理，转化成标准正态平稳时间序列。

The main research contents are the modeling of price or returns series and correspondent volatility and risk. The main contents of this course include: modeling of single stationary time series and single non-stationary time series, non-linear modeling of single series, cointegration and vector autoregression modeling, etc.

适用于低频和高频数据；分为时域分析、谱域分析和回归分析集中分析方法；主要研究内容为价格或收益序列的建模，以及相应的波动性或风险的建模；主要内容分为单个平稳时间序列的建模、单个非平稳序列的建模、单个序列的非线性建模、协整和向量自回归建模等等。

Wastewater containing phenol was treated by β-cyclodextrin in the stationary bed,and the dosage of β-CD,the density of stationary bed and pH value was investigated.

在固定床中用β-环糊精处理苯酚废水，考察了β-环糊精的用量、固定床的密度以及pH值等影响因素。

By taking a variation on U with as a variable, one arrives at the stationary equation given by (2.110) and the stationary value of U, Us is given by 式中D

通过用 作为U的一个变量，由式2.110得到的固定方程式和U的固定值Us由下式得到

Experimental result showed that under the wavelength of 460 nm,there was good linear relation between absorbency and content of SO42-;and stationary time that absorbency value needed became longer along with the increase of sample quantity of phosphoric acid.When absorbency become stationary,there is good linear relation between the phosphoric acid sample quantity and the content ofSO42-.So the content of SO42- can be adjusted by turning the sample quantity to make it in scope of standard curve.

实验结果表明，在波长为460 nm处，硫酸根含量与吸光度成良好的线性关系；随着磷酸取样量的增加，吸光度达到稳定值所需的时间相应增加，稳定后磷酸取样量与硫酸根含量成良好线性关系，因此实验过程中可通过调整磷酸的取样量来调节硫酸根含量，使之在标准曲线的测定范围内。

The results show that the entanglement of field-atom reduced to a stationary value with time evolution and the entanglement between two modes increase to another stationary value with intrinsic decoherence, and the values only depend on the two-mode photon number and mean photon number.

结果表明，存在内禀退相干时，随着时间的演化，场一原子纠缠逐渐减小到一个确定值，而模间纠缠逐渐增大到一个确定值，两者演化的最终值只取决于双模光子数差和平均光子数，而与内禀退相干因子无关。

According to the characteristic difference between short-time dynamic signal and stationary noise background, this paper presents a novel LMS adaptive algorithm to be whitened stationary noise background based on AR model theory of time series.

根据短时动态信号与平稳背景噪声的特徵区别，以时间序列的AR模型理论为依据，导出背景噪声自适应白化滤波器的结构，并用变步长LMS算法实现自适应滤波。

If the initial state of the system is zero and the input is one-sided white noise, the input and output of the system are approximately stationary. This is a special case for non-stationary processes.

对零初始条件下的渐近平稳过程这一非平稳特例做了较详细的研究给出了若干有意义的结果。

Chimborazo and Cotopaxi, took me by the hand.

越过琴博腊索山和科托帕克西山。

This car is in a good condition.

这辆车的状况很好。