Common methods for Q-value calculation are rise-time method, spectral ratio method, spectrum modeling method, wavelet modeling method and so forth.

通常用于求取q值的方法有升时法、频谱比法、谱模拟法及子波模拟法等。

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The major methods of measuring Q-value by the natural earthquakes are the ones of using the data of free vibration of earth, body wave, surface wave and coda.

利用天然地震波测量Q值的主要方法有：利用地球自由振荡资料、利用体波、利用面波和利用尾波来研究Q值。

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Hence we derive the expression of fitting function and propose a new Q-value inversion method using non - linear parameter statistical modeling of seismic records.

为此我们导出了拟合函数表达式，提出用非线性参数统计模拟地震记录的方法反演q值。

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Still, she sees projects like In-Q-Tel's as confirmation that virtual worlds have value for serious organizations.

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