平稳

However, almost all the current theories for climate prediction, including the ones in statistics and nonlinear science, are based on assumption that the process is stationary which is contrary to the nature of the climate process.

在大气运动中，气候正是一个典型的非平稳系统，但是现有的气候预测理论，包括统计预测理论和非线性预测理论，几乎都无一例外地建立在平稳性假定的基础之上，这有悖于气候过程的基本性质，因此它有可能是导致气候预测水平低下的重要的理论原因。

One is stationary time series, the other is nonstationary time series. In daily time we usually observe time series which is almost nonstationary especially in the phenomena of society and economic.

在实际问题中，我们经常遇到的序列，特别是反映社会、经济现象的序列，大多数并不平稳，并且呈现出明显的趋势性或周期性，因此研究非平稳时间序列的建模具有很重要的现实意义。

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。

After standardizing transform of fluctuant component series of size curves of cocoon filaments, the simulation method of the series is brought forward by means of auto-regressive model of stationary time series. The simulation and analysis are carried out.

茧丝纤度曲线波动分量通过标准化变换处理后，近似看作平稳时间序列，利用平稳时间序列的自回归模型，给出了这种时间序列的模拟方法。

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。

So cooperative controlling of driving force of wheel is a key of trafficability on tough lunar terrain.Based on SQP algorithm,driving force of wheel was optimized. Optimization is based on restriction of moving safely and smoothly.The aim of optimization is to minimize power consume of motors and varying range of driving force.

本文基于序列二次规划算法优化摇杆-转向架式月球车车轮系统驱动力输出，建立保证月球车在月壤平稳安全通过的力学约束方程，以车轮驱动功率和驱动力变化最小为目标函数优化车轮驱动力输出，使月球车平稳前进的同时车轮驱动电机功率消耗最小，这对能源有限的月球车来说是很有意义的。

Clustering method is used to classify time series for stationarity analysis and a nonlinear transformation theory is presented.

采用聚类方法实现了金融多元时间序列平稳性的自动分类，并提出了非线性转换理论，大幅度提高了传统平稳性分析方法的准确率；4。

This paper discusses the identifyability and identification algorithms for the non-minimum-phase linear system with unmeasurable non-stationary input.

摘要非平稳过程在实际中是大量遇到的，该文研究当系统输入是不可量测的非平稳过程时，系统相位的可辨识性及辨识方法。

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。