A homological multi-information image fusion method was introduced for recognition of the gastric tumor pathological tissue images.The main purpose is that fewer procedures are used to provide more information and the...A homological multi-information image fusion method was introduced for recognition of the gastric tumor pathological tissue images.The main purpose is that fewer procedures are used to provide more information and the result images could be easier to be understood than any other methods.First,multi-scale wavelet transform was used to extract edge feature,and then watershed morphology was used to form multi-threshold grayscale contours.The research laid emphasis upon the homological tissue image fusion based on extended Bayesian algorithm,which fusion result images of linear weighted algorithm was used to compare with the ones of extended Bayesian algorithm.The final fusion images are shown in Fig 5.The final image evaluation was made by information entropy,information correlativity and statistics methods.It is indicated that this method has more advantages for clinical application.展开更多
Several earthquakes with M S≥5.0 occurred in the Datong seismic region in 1989, 1991 and 1999. The precise focus location of the earthquake sequence was made by the records of the remote sensing seismic station netwo...Several earthquakes with M S≥5.0 occurred in the Datong seismic region in 1989, 1991 and 1999. The precise focus location of the earthquake sequence was made by the records of the remote sensing seismic station network in Datong. Using that data together with macro-intensity distribution and focal mechanism solutions, we analyze the difference among three subsequences. The results show that the focal fault of the 1999 M S5.6 earthquake was a NWW-trending left-lateral strike-slip fault. It is 16 km long and 12 km wide. It developed at the depth of 5 km and is nearly vertical in dip. The two previous earthquake subsequences, however, were generated by activity along NNE-trending right-lateral strike-slip fault. It can be found that the rupture direction of the 1999 earthquake has changed. It is generally found that a rupture zone has more than two directions and has different strength along these two directions. The complicate degree of focal circumstance is related to the type of earthquake sequences. There is the NE-trending Dawangcun fault and the NW-trending Tuanbu fault in the seismic region, but no proof indicates a connection between focal faults and these two tectonic faults. The feature that focal faults of three subsequences are strike-slip is different from that of the two tectonic faults. It is suggested that the 1999 earthquake subsequence was possibly generated by a new rupture.展开更多
An adaptive PBC strategy for SM with a time-varying load torque to track fluxand speed trajectories was proposed.The key point of this method was the identificationof terms,known as workless forces,which appeared in t...An adaptive PBC strategy for SM with a time-varying load torque to track fluxand speed trajectories was proposed.The key point of this method was the identificationof terms,known as workless forces,which appeared in the dynamic equations of SM buthad no effect on the energy balance equation of the closed loop.PBC,combined withadaptive control schemes,not only preserved the advantages of PBC such as nonexistenceof singularity,but also rejected the flux and speed tracking error caused by statorand rotor resistance variation.The rotor currents of SM were estimated via a state observer.This algorithm simplified the control structure and enhanced the robustness of thecontrol system.The feasibility and effectiveness were confirmed by experimental resultsbased on dSPACE.展开更多
基金Supported by the National Science Foundation of China(No.30370403 )
文摘A homological multi-information image fusion method was introduced for recognition of the gastric tumor pathological tissue images.The main purpose is that fewer procedures are used to provide more information and the result images could be easier to be understood than any other methods.First,multi-scale wavelet transform was used to extract edge feature,and then watershed morphology was used to form multi-threshold grayscale contours.The research laid emphasis upon the homological tissue image fusion based on extended Bayesian algorithm,which fusion result images of linear weighted algorithm was used to compare with the ones of extended Bayesian algorithm.The final fusion images are shown in Fig 5.The final image evaluation was made by information entropy,information correlativity and statistics methods.It is indicated that this method has more advantages for clinical application.
文摘Several earthquakes with M S≥5.0 occurred in the Datong seismic region in 1989, 1991 and 1999. The precise focus location of the earthquake sequence was made by the records of the remote sensing seismic station network in Datong. Using that data together with macro-intensity distribution and focal mechanism solutions, we analyze the difference among three subsequences. The results show that the focal fault of the 1999 M S5.6 earthquake was a NWW-trending left-lateral strike-slip fault. It is 16 km long and 12 km wide. It developed at the depth of 5 km and is nearly vertical in dip. The two previous earthquake subsequences, however, were generated by activity along NNE-trending right-lateral strike-slip fault. It can be found that the rupture direction of the 1999 earthquake has changed. It is generally found that a rupture zone has more than two directions and has different strength along these two directions. The complicate degree of focal circumstance is related to the type of earthquake sequences. There is the NE-trending Dawangcun fault and the NW-trending Tuanbu fault in the seismic region, but no proof indicates a connection between focal faults and these two tectonic faults. The feature that focal faults of three subsequences are strike-slip is different from that of the two tectonic faults. It is suggested that the 1999 earthquake subsequence was possibly generated by a new rupture.
基金Supported by the National Basic Research Program of China(973 Program)(2005CB221505)the Special Scientific Research Foundation for Doctoral Subject of Colleges and Universities in China(20050248058)
文摘An adaptive PBC strategy for SM with a time-varying load torque to track fluxand speed trajectories was proposed.The key point of this method was the identificationof terms,known as workless forces,which appeared in the dynamic equations of SM buthad no effect on the energy balance equation of the closed loop.PBC,combined withadaptive control schemes,not only preserved the advantages of PBC such as nonexistenceof singularity,but also rejected the flux and speed tracking error caused by statorand rotor resistance variation.The rotor currents of SM were estimated via a state observer.This algorithm simplified the control structure and enhanced the robustness of thecontrol system.The feasibility and effectiveness were confirmed by experimental resultsbased on dSPACE.
