It is thought that under normal eonditions a vertical line unite formula replaces a cubic formula in forward calculation, thus increasing the speed of calculation about 20 times besides assuring certain calculation precision.
The phases of direct P, S and converted SP waves in the displacement seismograms, produced by twice integration of the observed accelerograms, are identified via forward calculation using Green's functions for homogeneous semi-infinite elastic medium, and used in the inversion.
以均匀半无限弹性介质的格林函数解释路径效应,并通过正演计算识别由两次积分得到的位移地震图中的直达 P 波、直达 S 波和 SP 转换波震相,然后用这些震相进行矩张量反演.
It is of interest for interpreting the thin-bedded AVO anomaly to calculate the equation of reflection coefficient in the solid multilayered medium as derived in the paper and based on which to write the reflection forward computation program.
Considering the influence of the topography, the authors analyzed in detail the geoelectric section model and made CSAMT two-dimensional inversion for the direct calculation data of the model. The result is basically consistent with the shape of the direct model. The electric section obtained can satisfactorily reflect the underground geological structure and accord with the geological data.
It takes advantage of the reverse projection technique of seismic wave and electromagnetic wave, and applies the reverse projection of resistivity combined with the utilization of routine algorithm (conductive center method for direct calculation and nonlinear least squares method for inverse revision)so as to carry out the reconstriction of two-dimensional resistivity image.
Block diagram implementation of the time-recursive algorithm is described, computational complexity with respect to increasing block size is compared with straight forward computation, and the proper time-recursive block size is suggested.
This approach avoids forward computation on the complex geometry of irregular grids.
A forward computation algorithm continuously computes dynamic slices as statements are executed.
As far as we know, no experimental data has been published for forward computation algorithm.
As mentioned above, the forward computation algorithms maintain the latest dynamic slice for each variable/location.
The method of digital synthesis is based on the straightforward calculation of the output signal phase used to increase the operation rate and to extend the functional capabilities of digital frequency synthesizers.
A straightforward calculation of the average radiative strength functions allows us to conclude that in36ClM1 transitions are weaker than estimated by schematic studies of heavier nuclei.
The free surface, mass conserving ocean model leads to a straightforward calculation of these changes.
The modelling method could allow for straightforward calculation of the non-respiratory CO2 excretion rate for future validation work.
We derive anew the non-trivial relation for the stress tensor that allows a straightforward calculation of the mean stress from discrete element simulations and comment on the applicability.