Organisms and humans should plan for things that occur with some frequency; buildings in earthquake-prone areas must be ready for tremors just as surely as mating Horseshoe crabs need to know the phase of the moon.
Let us consider the Rényi entropy of an ideal TFD, denoted as I s (t, f), of a compactly supported signal s(t) (in Figure 2 represented by a Gabor logon [3] in the (t, f) plane, being an elementary time-frequency building block).
LWF groups together words that have similar local word frequencies, building a statistical likelihood profile based on known CRMs that allows for prediction of similar CRMs [10].
The impacts of time-variant hurricane intensity and time-variant hurricane frequency on building damage are assessed individually using the developed framework.
Superior quality well log data are essential for the high-quality seismic reservoir characterization because well log data are routinely used for wavelet estimation, low frequency model building, seismic velocity calibration, and time-to-depth conversion.
Briefly, noise exposure was based on transportation-related information, including road traffic data (e.g., speed limits, traffic volume, fleet composition, and road width), railway data (e.g., type of train, velocity, and frequency), and building heights and footprints.
A more precise estimate of fundamental period or natural frequency of buildings can be obtained with the use of modal analysis, which is available in commercial building software programs.
As the natural frequency of buildings leave the range of dominant ground shaking frequencies, the damage factors diminish as demonstrated by the data for Takasago Apartment and Lions Tower Kotodai.
To avoid the global feature selection mechanism, it is desirable to distinguish features (e.g., sort) according to their frequencies by building some screening techniques to separate two types of features in the feature selection.
Conversely, if the building frequency is lower than the soil frequency, the building does not "feel" the effect of the site resonance, and the damage level is comparable on soil and rock: This was observed for instance in Mexico City in 1985 for very high-rise buildings with frequencies much below 0.5 Hz.
