A new three-dimensional Lie algebra and its corresponding loop algebra are constructed, from which a modified AKNS soliton-equation hierarchy is obtained.
A close relation between gravitational waveforms and the types of trajectories in a superposed field between a pseudo-Newtonian Kerr black hole and quadrupolar halos is shown in detail The gravitational waveforms emit...A close relation between gravitational waveforms and the types of trajectories in a superposed field between a pseudo-Newtonian Kerr black hole and quadrupolar halos is shown in detail The gravitational waveforms emitted from circular, KAM tori and chaotic orbits must be periodic, quasiperiodic and stochastic, respectively. The chaotic motion can maximally enhance both the amplitudes and the energy emission rates of the waves.展开更多
An ensemble adjustment Kalman filter system is developed to assimilate Argo profiles into the Northwest Pacific MASNUM wave-circulation coupled model, which is based on the Princeton Ocean Model (POM). This model was ...An ensemble adjustment Kalman filter system is developed to assimilate Argo profiles into the Northwest Pacific MASNUM wave-circulation coupled model, which is based on the Princeton Ocean Model (POM). This model was recoded in FORTRAN-90 style, and some new data types were defined to improve the efficiency of system design and execution. This system is arranged for parallel computing by using UNIX shell scripts: it is easier with single models running separately with the required information exchanged through input/output files. Tests are carried out to check the performance of the system: one for checking the ensemble spread and another for the performance of assimilation of the Argo data in 2005. The first experiment shows that the assimilation system performs well. The comparison with the Satellite derived sea surface temperature (SST) shows that modeled SST errors are reduced after assimilation; at the same time, the spatial correlation between the simulated SST anomalies and the satellite data is improved because of Argo assimilation. Furthermore, the temporal evolution/trend of SST becomes much better than those results without data assimilation. The comparison against GTSPP profiles shows that the improvement is not only in the upper layers of ocean, but also in the deeper layers. All these results suggest that this system is potentially capable of reconstructing oceanic data sets that are of high quality and are temporally and spatially continuous.展开更多
安·泰尔博特(Ann Talbot),英国学者,1978年毕业于英国曼彻斯特大学,2008年获得英国波尔顿大学(University of Bolton)授予的哲学博士学位,著有《"知识之汪洋":游记文学对约翰·洛克著作的影响》("The Great Oce...安·泰尔博特(Ann Talbot),英国学者,1978年毕业于英国曼彻斯特大学,2008年获得英国波尔顿大学(University of Bolton)授予的哲学博士学位,著有《"知识之汪洋":游记文学对约翰·洛克著作的影响》("The Great Ocean of Knowledge":the Influence of Travel Literature on the Work of John Locke,Leiden:Brill Academic Pub,2010)。本文原名为:"John Locke and China:Context and Content",未曾发表。本文将洛克对中国的论述放在"礼仪之争"和启蒙运动的历史文化语境中,探讨了洛克中国观的内容、特点以及知识来源等问题,并首次公布了洛克"中国笔记"的存在,将中国文化与英国经验论联系在一起。展开更多
文摘A new three-dimensional Lie algebra and its corresponding loop algebra are constructed, from which a modified AKNS soliton-equation hierarchy is obtained.
基金Supported by the National Natural Science Foundation of China under Grant Nos.10873007 and 11173012
文摘A close relation between gravitational waveforms and the types of trajectories in a superposed field between a pseudo-Newtonian Kerr black hole and quadrupolar halos is shown in detail The gravitational waveforms emitted from circular, KAM tori and chaotic orbits must be periodic, quasiperiodic and stochastic, respectively. The chaotic motion can maximally enhance both the amplitudes and the energy emission rates of the waves.
基金Supported by the Project of National Basic Research Program of China (No. 2007CB816002)Special Fund for Fundamental Scientific Research (No. 2008G08)
文摘An ensemble adjustment Kalman filter system is developed to assimilate Argo profiles into the Northwest Pacific MASNUM wave-circulation coupled model, which is based on the Princeton Ocean Model (POM). This model was recoded in FORTRAN-90 style, and some new data types were defined to improve the efficiency of system design and execution. This system is arranged for parallel computing by using UNIX shell scripts: it is easier with single models running separately with the required information exchanged through input/output files. Tests are carried out to check the performance of the system: one for checking the ensemble spread and another for the performance of assimilation of the Argo data in 2005. The first experiment shows that the assimilation system performs well. The comparison with the Satellite derived sea surface temperature (SST) shows that modeled SST errors are reduced after assimilation; at the same time, the spatial correlation between the simulated SST anomalies and the satellite data is improved because of Argo assimilation. Furthermore, the temporal evolution/trend of SST becomes much better than those results without data assimilation. The comparison against GTSPP profiles shows that the improvement is not only in the upper layers of ocean, but also in the deeper layers. All these results suggest that this system is potentially capable of reconstructing oceanic data sets that are of high quality and are temporally and spatially continuous.
文摘安·泰尔博特(Ann Talbot),英国学者,1978年毕业于英国曼彻斯特大学,2008年获得英国波尔顿大学(University of Bolton)授予的哲学博士学位,著有《"知识之汪洋":游记文学对约翰·洛克著作的影响》("The Great Ocean of Knowledge":the Influence of Travel Literature on the Work of John Locke,Leiden:Brill Academic Pub,2010)。本文原名为:"John Locke and China:Context and Content",未曾发表。本文将洛克对中国的论述放在"礼仪之争"和启蒙运动的历史文化语境中,探讨了洛克中国观的内容、特点以及知识来源等问题,并首次公布了洛克"中国笔记"的存在,将中国文化与英国经验论联系在一起。
