Based on X_α multiple scattering one-electron wave functions, a way for solving the many-electron Schrodinger equation by means of irreducible tensor method is reported. As an application, the analysis of the spectra...Based on X_α multiple scattering one-electron wave functions, a way for solving the many-electron Schrodinger equation by means of irreducible tensor method is reported. As an application, the analysis of the spectra of molecule NIF_6^(4-) is presented.展开更多
Objective To study the effect of using improved 2D computer-assisted fluoroscopic navigation through simulating 3D vertebrae image to guide pedicle screw internal fixation.Methods Posterior pedicle screw internal fixa...Objective To study the effect of using improved 2D computer-assisted fluoroscopic navigation through simulating 3D vertebrae image to guide pedicle screw internal fixation.Methods Posterior pedicle screw internal fixation,distraction展开更多
In this paper some improvements on certainty factor model are discussed aiming at:1)including, in a rule“E→H”,not only the CF of H when E exists but also CF of(?)when E does not exist(partly or completely).For this...In this paper some improvements on certainty factor model are discussed aiming at:1)including, in a rule“E→H”,not only the CF of H when E exists but also CF of(?)when E does not exist(partly or completely).For this purpose another factor(?)is added into the original model;2) improving the model so that it can tackle problems with unknown evidence.In this aspect two concepts are introduced:(relative)maximum existence risk and(relative)maximum non-existence risk.An impor- tant result is that even if some necessary evidence is unknown one can still know the tendency whether the conclusion is true.Based on the improvements a conflict resolution model for problem-level conflict is also presented展开更多
It is seriously interfered by ship noise when analyzing and extracting broadband spark sound source signal. In the energy concentrated domain which is below 5 kHz, the traditional scale correlation filtering algorithm...It is seriously interfered by ship noise when analyzing and extracting broadband spark sound source signal. In the energy concentrated domain which is below 5 kHz, the traditional scale correlation filtering algorithm, which is based on adjacent-scale correlation, has limited anti-interference ability due to the low signal-to-noise ratio （SNR） and similar Lipschitz exponent characteristic of each other. However, because different frequency bands of the broadband electric spark signal have different noise interferences, the filtering algorithm based on adjacent-scale correlation is adapted to high SNR and small-scale high-frequency wavelet coefficients filtering; the filtering algorithm based on cross-scale correlation is adapted to low SNR and large-scale low-frequency wavelet coefficients filtering, and the threshold coefficient selection method had been corrected in the algorithm. It is shown that the filtering algorithm has a good filtering effect and extracts the broadband spark sound source signal effectively; it is applicable to broadband underwater acoustic signM processing in the presence of narrow-band strong interference background noise.展开更多
文摘Based on X_α multiple scattering one-electron wave functions, a way for solving the many-electron Schrodinger equation by means of irreducible tensor method is reported. As an application, the analysis of the spectra of molecule NIF_6^(4-) is presented.
文摘Objective To study the effect of using improved 2D computer-assisted fluoroscopic navigation through simulating 3D vertebrae image to guide pedicle screw internal fixation.Methods Posterior pedicle screw internal fixation,distraction
文摘In this paper some improvements on certainty factor model are discussed aiming at:1)including, in a rule“E→H”,not only the CF of H when E exists but also CF of(?)when E does not exist(partly or completely).For this purpose another factor(?)is added into the original model;2) improving the model so that it can tackle problems with unknown evidence.In this aspect two concepts are introduced:(relative)maximum existence risk and(relative)maximum non-existence risk.An impor- tant result is that even if some necessary evidence is unknown one can still know the tendency whether the conclusion is true.Based on the improvements a conflict resolution model for problem-level conflict is also presented
基金supported by the Scientific Research Foundation of Third Institute of Oceanography,SOA(NO.2010018)the Public Science and Technology Research Funds Projects of Ocean(NO.201005004,NO.201305038)
文摘It is seriously interfered by ship noise when analyzing and extracting broadband spark sound source signal. In the energy concentrated domain which is below 5 kHz, the traditional scale correlation filtering algorithm, which is based on adjacent-scale correlation, has limited anti-interference ability due to the low signal-to-noise ratio （SNR） and similar Lipschitz exponent characteristic of each other. However, because different frequency bands of the broadband electric spark signal have different noise interferences, the filtering algorithm based on adjacent-scale correlation is adapted to high SNR and small-scale high-frequency wavelet coefficients filtering; the filtering algorithm based on cross-scale correlation is adapted to low SNR and large-scale low-frequency wavelet coefficients filtering, and the threshold coefficient selection method had been corrected in the algorithm. It is shown that the filtering algorithm has a good filtering effect and extracts the broadband spark sound source signal effectively; it is applicable to broadband underwater acoustic signM processing in the presence of narrow-band strong interference background noise.
