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经济学 平稳性 Then, after ADF stationarity test, we used the factor sequences to establish a VAR model. We conducted Granger causality test and impulse response analysis. 其次,本文对提取出的因子序列进行了ADF平稳性检验,建立VAR模型并进行了Granger因果关系检验和脉冲响应分析。
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电子、通信与自动控制技术 平稳性 Firstly, based on cyclostationary signal theory, the non-stationarity of the chaotic signals is analyzed. Simulations show that the signals exhibit the cyclostationarity. 首先,根据循环平稳过程理论,分析了双漩涡吸引子运动行为下蔡氏电路所产生的混沌信号的循环平稳特性,模拟仿真证明了信号的非平稳性。 稳定性
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