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您的检索式：作者名="DING Liangbo"
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| 1 | An iterative algorithm for solving ill-conditioned linear least squares problems显示文摘Linear Least Squares(LLS) problems are particularly difficult to solve because they are frequently ill-conditioned, and involve large quantities of data. Ill-conditioned LLS problems are commonly seen in mathematics and geosciences, where regularization algorithms are employed to seek optimal solutions. For many problems, even with the use of regularization algorithms it may be impossible to obtain an accurate solution. Riley and Golub suggested an iterative scheme for solving LLS problems. For the early iteration algorithm, it is difficult to improve the well-conditioned perturbed matrix and accelerate the convergence at the same time. Aiming at this problem, self-adaptive iteration algorithm(SAIA) is proposed in this paper for solving severe ill-conditioned LLS problems. The algorithm is different from other popular algorithms proposed in recent references. It avoids matrix inverse by using Cholesky decomposition, and tunes the perturbation parameter according to the rate of residual error decline in the iterative process. Example shows that the algorithm can greatly reduce iteration times, accelerate the convergence,and also greatly enhance the computation accuracy. | Deng Xingsheng Yin Liangbo Peng Sichun Ding Meiqing | 2015 | Geodesy and Geodynamics2015，6，6： | 8 |
| 2 | Controls on the Gas Hydrate Occurrence in Lower Slope to Basin-Floor,Northeastern Bay of Bengal显示文摘High resolution seismic data and newly acquired logging data reveal the presence of gas hydrates in the deep-water area in the northeastern Bay of Bengal.Bottom Simulating Reflectors(BSRs)appear at 430 ms beneath the seafloor,with the features of typical gas hydrates reported elsewhere except for some discontinuity.The BSR distribution is closely related to the position of anticline structures and turbidite channels.Anticlines provide conduits for the upward migration of gases from deeper intervals,while the turbidite sands within channels act as reservoirs for gas hydrate accumulation.High sedimentation rates in the Bengal Fan were ge-nerally favorable to produce a great amount of methane gas,providing favorable preconditions for the formation of gas hydrates.The discovery of gases in adjacent area indicates the contribution of the biogenic gas to the formation of gas hydrates.Meanwhile,seismic sections provide the evidence for the potential thermogenic gas kitchen in deep intervals.The anticline structures and the associated vertical fractures may constitute vertical fluid flowing conduits,which hydraulically connect the two deeper thermogenic petroleum systems(i.e.,rifting and Eocene-Oligocene source rocks)with the turbidite reservoirs and thus facilitate the fluid migration from the sources to the reservoirs,generating favorable conditions for gas-hydrate accumulation in such foreland setting. | LU Yintao LUAN Xiwu SHI Boqing FAN Guozhang RAN Weimin XU Ning WANG Haiqiang SHAO Dali DING Liangbo WANG Xingxing | 2022 | Journal of Ocean University of China2022，21，4： | 0 |
| 3 | Energy Saving and Pollutant Reduction: Nuclear vs Thermal显示文摘This paper presents the development status of thermal and nuclear power industries in China in recent years. It makes a comparison between the two industries from the aspects of reliability, economics, energy saving and pollutant reduction, by which the effects of expanding nuclear power on pollution control, resources conservation and eff icient energy use are evaluated, and several points of view are summarized. | Guo Juanyan, Ding Liangbo and Zhang Yingyi Suzhou Nuclear Power Research Institute Co., Ltd. Ding Liangbo | 2010 | Electricity2010，21，4： | 0 |
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