Aiming at the problem, we improved the hyperbolic curve travel time formula for conventional pre-stack time migration,and proposed extended travel time computation formula for pre-stack time migration with laterally variable velocity.

Study on Computational Performance and Benchmark Test of PC Cluster Parallel Computer in Engineering;

Expansion of array disk subsystem in SGI Origin 2000 parallel computer;

Performance analysis and application of the parallel computer.;

In judicial practice,investigators commonly take "two-steps" approach in gathering digital evidence that lived in the running computer at crime scene,that means the investigator just implement the duty of unplug the running computer and book it into the evidence facility,from there,the investigator requests that the computer be examined by a trained digital evidence examiner.