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Gonzalez et al. [9] reported that one of the major problems associated with PVC is its sensitivity to weathering.
El Raghi, R.

El Maraghy, Manufacturing Education Notes Education and Research.
Gershenson, et al., Infusing sustainability principles into manufacturing/mechanical engineering curricula, Journal of Manufacturing Systems 24 (2005) 215-225

Brie et al [4] found that depending on the demodulation type (amplitude or phase) the frequency band is different and he proposed adaptive methods to find the OFB (It should be noticed that due to varying operating conditions, that might cause amplitude and frequency modulations [12], vibration signature of damaged element (location of carrier and bandwidth) may be very different and it is important to know instantaneous value of speed and load [13, 14,17]). 2.4 Time-Frequency Domain Techniques Time-frequency methods include (among others) the Short-Time Fourier Transform (STFT), the Gabor transform, and the wavelet analysis, of which the last one has been extensively engaged in diagnostics of rotating machinery for several years [3,7,18].
[19] Antoni, J., Bonnardot, F., Raad, A., El Badaoui, M., Cyclostationary modeling of rotating machine vibration signals, Mechanical Systems and Signal Processing 18 (6) (2004) pp. 1285-1314.

The main empirical methods in literature are the Damage Probability index Method (DPM), proposed by Whitman et al. [2], and the Vulnerability Index Method (VIM) [3,4].
Rubellini, Firenze, sismicità dell’area fiorentina, S.EL.CA, Firenze, 2008

EL-Din Zohny, Numerical Analysis of Additional Stresses in Railway Track Elements Due to Subgrade Settlement Using FEM Simulation.
Alkaissi and Y.M.Al-Badran, Finite element modeling of rutting for flexible pavement.

We choose El Centro (NS) wave, Taft (NS) wave and artificial wave generated according to the geological conditions, which are suitable for site of class Ⅱ.
(In Chinese) [4] CHANG K C,HWANH J S, CHAN T C, et al.

References [1] Jun Shi, Jiading Wang, et al.
El-Halwagi.

Hauser et al., in: Proc.
Sandstrom and E.L.

A first mentioning of blue shift of D4 band with temperature had been reported by Fukatsu et al. [8] but without any comments.
g l , (1) The equation (1) is written under simplifying conditions that el/T>>1 and R>>rD, rD is Debye screening length, r2 D =gT/4ヾe2ne.

They used a super computer named CRAY YMP-EL‎[4] for the simulation.
Edwardson, et al. in: FEM modeling of laser forming at macro and micro scales, Physics Procedia Vol. 5(2010), Part B(0), pp. 371-380