To obtain the accurate data and decrease the energy consumption for the data transmission in the sensor network,a new irregular wavelet data processing algorithm is proposed based on variable Voronoi polygon.

Using developed systems for measuring surface wave and hydrodynamic pressure variation, various surface waves(ship wavemaking, regular wave,irregular wave and wave pattern caused by a moving ship in wave) and pressure fluctuations on sea bottom were measured.

This paper introduces the testing of simulation performance of the regular wave and irregular wave of the import wave maker after its hardware and software are reformed.

The accuracy of the ship model seakeeping tests is greatly dependent on the quality of the long-crested irregular waves generated in the test lab.

Based on the bifurcation buckling of abnormal beamcolumn steel frame,it was found that the way to ascertain column s effective length of normal steel frame can also be used in abnormal beam-column steel frame;the principle of virtual work was used to deduce the flexural stiffness of two kinds of Abnormal beams,and its effect on the effective length of rigid steel frame column was analyzed.