In the near future at clustering periodic time series data study up have more and more extensive trend.
近期在周期性时间序列资料分群研究上有越来越广泛的趋势。
For periodic waveforms, the Fourier series representations are valid over all time.
对于周期波形，傅立叶级数表示法在整个时间段都是有效的。
The periodic occurrence of any sedimentary event may be expressed by the frequency in the time series.
某一沉积事件周期性出现的频繁程度可用时间序列中的频率来表示。
The RC series circuit (linear time - invariant circuit)excited by the non - sine periodic voltage is analysed, both the transient response and the steady - state response of this circuit are obtained.
分析了非正弦周期电压作用下的RC串联电路（线性、非时变电路），得到了暂态响应分量和稳态响应分量。
Time series model can simulate and predict the increase of Quercus variabilis population by the difference, periodic method.
时间序列分析可以通过差分、周期的方法，对植物种群的增长进行模拟与预测。
This paper describes the need to transform the continuous periodic signal in time domain to the discrete signal in frequency domain by using Fourier Series (FS).
讨论了利用傅里叶级数把连续周期时域信号转换成离散的频域信号的必要性。
The periodic mean superposition method can predict the result through decomposing the hydrological time series into several periodic waves, extrapolating the periodic waves, and linear superposition.
周期均值叠加法将随时间变化的水文要素序列分离成若干个周期波，然后将周期波进行外延，再进行线性叠加，从而获得预报结果。
To characterize the deterministic dynamics in heart rhythm, the unstable periodic orbit analysis were the RR interval time series of healthy young men.
为刻划心脏节律存在的确定性动力学特征，运用不稳定周期轨道分析方法对健康青年人的RR间期时间序列数据进行分析。
Periodicity mining is the mining of periodic patterns, that is, the search for recurring patterns in time-series database.
周期模式主要是研究时序数据库中的循环特性，是时态数据挖掘的一个重要的研究方向。
Periodicity mining is the mining of periodic patterns, that is, the search for recurring patterns in time-series database.
周期模式主要是研究时序数据库中的循环特性，是时态数据挖掘的一个重要的研究方向。
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