Institution
Beijing Wuzi University
Education•Beijing, China•
About: Beijing Wuzi University is a education organization based out in Beijing, China. It is known for research contribution in the topics: Supply chain & Computer science. The organization has 1210 authors who have published 1092 publications receiving 6370 citations.
Papers published on a yearly basis
Papers
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TL;DR: In this article, a deep learning method is applied to set up the solar flare forecasting model, in which forecasting patterns can be learned from line-of-sight magnetograms of solar active regions.
Abstract: Solar flares originate from the release of the energy stored in the magnetic field of solar active regions, the triggering mechanism for these flares, however, remains unknown. For this reason, the conventional solar flare forecast is essentially based on the statistic relationship between solar flares and measures extracted from observational data. In the current work, the deep learning method is applied to set up the solar flare forecasting model, in which forecasting patterns can be learned from line-of-sight magnetograms of solar active regions. In order to obtain a large amount of observational data to train the forecasting model and test its performance, a data set is created from line-of-sight magnetogarms of active regions observed by SOHO/MDI and SDO/HMI from 1996 April to 2015 October and corresponding soft X-ray solar flares observed by GOES. The testing results of the forecasting model indicate that (1) the forecasting patterns can be automatically reached with the MDI data and they can also be applied to the HMI data; furthermore, these forecasting patterns are robust to the noise in the observational data; (2) the performance of the deep learning forecasting model is not sensitive to the given forecasting periods (6, 12, 24, or 48 hr); (3) the performance of the proposed forecasting model is comparable to that of the state-of-the-art flare forecasting models, even if the duration of the total magnetograms continuously spans 19.5 years. Case analyses demonstrate that the deep learning based solar flare forecasting model pays attention to areas with the magnetic polarity-inversion line or the strong magnetic field in magnetograms of active regions.
128 citations
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TL;DR: The modulational instability analysis of the solutions with variable coefficients in the presence of a small perturbation is studied and the semirational solutions of the nonautonomous LF model are obtained, which can be used to describe the interactions between the rogue waves and breathers.
Abstract: In this paper, the nonautonomous Lenells-Fokas (LF) model is investigated. The modulational instability analysis of the solutions with variable coefficients in the presence of a small perturbation is studied. Higher-order soliton, breather, earthwormon, and rogue wave solutions of the nonautonomous LF model are derived via the n-fold variable-coefficient Darboux transformation. The solitons and earthwormons display the elastic collisions. It is found that the nonautonomous LF model admits the higher-order periodic rogue waves, composite rogue waves (rogue wave pair), and oscillating rogue waves, whose dynamics can be controlled by the inhomogeneous nonlinear parameters. Based on the second-order rogue wave, a diamond structure consisting of four first-order rogue waves is observed. In addition, the semirational solutions (the mixed rational-exponential solutions) of the nonautonomous LF model are obtained, which can be used to describe the interactions between the rogue waves and breathers. Our results could be helpful for the design of experiments in the optical fiber communications.
116 citations
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TL;DR: To find the conserved substructures, an efficient algorithm for aligning molecular networks based on both molecule similarity and architecture similarity is developed by using integer quadratic programming (IQP) which almost always ensures an integer solution, thereby making molecular network alignment tractable without any approximation.
Abstract: Motivation: With more and more data on molecular networks (e.g. protein interaction networks, gene regulatory networks and metabolic networks) available, the discovery of conserved patterns or signaling pathways by comparing various kinds of networks among different species or within a species becomes an increasingly important problem. However, most of the conventional approaches either restrict comparative analysis to special structures, such as pathways, or adopt heuristic algorithms due to computational burden.
Results: In this article, to find the conserved substructures, we develop an efficient algorithm for aligning molecular networks based on both molecule similarity and architecture similarity, by using integer quadratic programming (IQP). Such an IQP can be relaxed into the corresponding quadratic programming (QP) which almost always ensures an integer solution, thereby making molecular network alignment tractable without any approximation. The proposed framework is very flexible and can be applied to many kinds of molecular networks including weighted and unweighted, directed and undirected networks with or without loops.
Availability: Matlab code and data are available from http://zhangroup.aporc.org/bioinfo/MNAligner or http://intelligent.eic.osaka-sandai.ac.jp/chenen/software/MNAligner, or upon request from authors.
Contact:zxs@amt.ac.cn, chen@eic.osaka-sandai.ac.jp
Supplementary information: Supplementary data are available at Bioinformatics online.
110 citations
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TL;DR: In this article, a two-dimensional Kortewegde-de Vries (KdV) model was derived and transformed into bilinear form by symbolic computation.
109 citations
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TL;DR: In this article, the inhomogeneous nonlinear Schrodinger Maxwell-Bloch (INLS-MB) equations were investigated for the propagation of optical waves in an inhomogenous nonlinear light guide doped with two-level resonant atoms.
107 citations
Authors
Showing all 1236 results
Name | H-index | Papers | Citations |
---|---|---|---|
Fang-Xiang Wu | 43 | 402 | 7566 |
Muhammad Hafeez | 24 | 196 | 2280 |
Fanyong Meng | 16 | 36 | 711 |
Feng-Hua Qi | 13 | 20 | 652 |
Fanyong Meng | 12 | 30 | 349 |
Chunlin Li | 12 | 46 | 362 |
Li Shen | 11 | 11 | 794 |
Yang Ding | 11 | 22 | 296 |
Zhenping Li | 10 | 15 | 364 |
Hengliang Tang | 9 | 12 | 182 |
Jun Liu | 9 | 47 | 366 |
Fei Xue | 9 | 40 | 771 |
Yang Cao | 8 | 12 | 873 |
Li-Ping Tian | 7 | 24 | 156 |
Liu Bingwu | 7 | 77 | 183 |