This paper deals with stochastic characteristic of the wind speed, and gives an auto-regressive moving-average (ARMA) model for wind speed subjected to particular power spectral density.
该文针对风速随机变化的特性，在风速统计特性研究的基础上，用自回归滑动平均(ARMA)方法建立了具有一定功率谱密度特性的风速模型。
In the past, the hot point is the macroscopic model, which discusses the relationships among the traffic stream variables-speed, flow and density.
以前的研究主要集中于宏观模型，讨论交通流量及密度的变化。
In the past, the hot point is the macroscopic model, which discusses the relationships among the traffic stream variables-speed, flow and density.
以前的研究主要集中于宏观模型，讨论交通流量及密度的变化。
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