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浏览/检索结果: 共25条，第1-10条 帮助 条数/页： 5101520253035404550556065707580859095100 排序方式： 请选择题名升序题名降序提交时间升序提交时间降序作者升序作者降序发表日期升序发表日期降序 Synchronous X-ray/Optical QPOs from the Black Hole LMXB MAXI J1820+070 期刊论文  OAI收割 Monthly Notices of the Royal Astronomical Society, 2021 作者:  HXMT   |  收藏  |  浏览/下载：53/0  |  提交时间：2022/02/08 black hole physics  Low Mass X-ray Binaries  accretion  accretion  discs  stars: individual (MAXI J1820+070)  Astrophysics - High Energy  Astrophysical Phenomena  Abstract: We present high-speed optical photometry from SAAO and SALT on the black hole LMXB MAXI J1820+070 (ASSASN-18ey), some of it simultaneous with NICER, Swift and Insight-HXMT X-ray coverage. We detect optical Quasi-Periodic Oscillations (QPOs) that move to higher frequencies as the outburst progresses, tracking both the frequency and evolution of similar X-ray QPOs previously reported. Correlated X-ray/optical data reveal a complex pattern of lags, including an anti-correlation and a sub-second lag that evolve over the first few weeks of outburst. They also show correlated components separated by a lag equal to the QPO period roughly centered on zero lag, implying that the inter-band variability is strongly and consistently affected by these QPOs at a constant phase lag of roughly ±Ю The synchronisation of X-ray and optical QPOs indicates that they must be produced in regions physically very close to each other  we thus propose that they can be explained by a precessing jet model, based on analogies with V404 Cyg and MAXI J1348-630.   Modulated optical signal detection based on cross-correlation algorithm 会议论文  OAI收割 Beijing, China, 2021-06-20 作者:  Zeng, Ke;  Han, Junfeng;  Wang, Haitao;  Wang, Chen;  Xie, Xiaoping   |  收藏  |  浏览/下载：23/0  |  提交时间：2022/01/30 Space laser communication  Modulated optical signal  Cross-correlation algorithm  Extremely low SNR   Shared Low-Rank Correlation Embedding for Multiple Feature Fusion 期刊论文  OAI收割 IEEE TRANSACTIONS ON MULTIMEDIA, 2021, 卷号: 23, 页码: 1855-1867 作者:  Wang, Zhan;  Wang, Lizhi;  Wan, Jun;  Huang, Hua   |  收藏  |  浏览/下载：21/0  |  提交时间：2021/12/28 Correlation  Kernel  Task analysis  Fuses  Noise measurement  Laplace equations  Dictionaries  Common subspace  low-rank representation  multiple feature fusion  canonical correlation analysis   Selenium Nutritional Status of Rural Residents and its Correlation with Dietary Intake Patterns in a Typical Low-Selenium Area in China 期刊论文  OAI收割 NUTRIENTS, 2020, 卷号: 12, 期号: 12, 页码: 10 作者:  Wang, Xiaoya;  Li, Hairong;  Yang, Linsheng;  Kong, Chang;  Wang, Jing   |  收藏  |  浏览/下载：23/0  |  提交时间：2021/03/15 Binxian  low-selenium area  hair  food consumption frequency  hierarchical  correlation   Selenium Nutritional Status of Rural Residents and its Correlation with Dietary Intake Patterns in a Typical Low-Selenium Area in China 期刊论文  OAI收割 NUTRIENTS, 2020, 卷号: 12, 期号: 12, 页码: 10 作者:     |  收藏  |  浏览/下载：19/0  |  提交时间：2021/03/15 Binxian  low-selenium area  hair  food consumption frequency  hierarchical  correlation   Online Fast Adaptive Low-Rank Similarity Learning for Cross-Modal Retrieval 期刊论文  OAI收割 IEEE TRANSACTIONS ON MULTIMEDIA, 2020, 卷号: 22, 期号: 5, 页码: 1310-1322 作者:  Wu, Yiling;  Wang, Shuhui;  Huang, Qingming   |  收藏  |  浏览/下载：33/0  |  提交时间：2020/12/10 Semantics  Correlation  Training  Data models  Visualization  Adaptation models  Fasteners  Cross-modality learning  similarity function learning  online learning  low-rank matrix   Crustal shear-wave velocity structure of northeastern Tibet revealed by ambient seismic noise and receiver functions 期刊论文  OAI收割 GONDWANA RESEARCH, 2017, 卷号: 41, 页码: 400-410 作者:  Wu, Zhenbo;  Xu, Tao;  Badal, Jose;  Yao, Huajian;  Wu, Chenglong   |  收藏  |  浏览/下载：19/0  |  提交时间：2017/11/16 Northeastern Tibet  Ambient Noise Cross-correlation  Phase Velocity Dispersion  Receiver Functions  Joint Inversion  Crustal Low Velocity Zone   PLS-CCA Heterogeneous Features Fusion-based Low-resolution Human Detection Method for Outdoor Video Surveillance 期刊论文  OAI收割 International Journal of Automation and Computing, 2017, 卷号: 14, 期号: 2, 页码: 136-146 作者:  Hong-Kai Chen;  Xiao-Guang Zhao;  Shi-Ying Sun;  Min Tan   |  收藏  |  浏览/下载：14/0  |  提交时间：2021/02/23 Low-resolution human detection  partial least squares  canonical correlation analysis  heterogeneous features  outdoor video surveillance.   Improving residue-residue contact prediction via low-rank and sparse decomposition of residue correlation matrix 期刊论文  OAI收割 BIOCHEMICAL AND BIOPHYSICAL RESEARCH COMMUNICATIONS, 2016, 卷号: 472, 期号: 1, 页码: 217-222 作者:     |  收藏  |  浏览/下载：36/0  |  提交时间：2019/12/13 Protein contacts prediction  Correlation analysis  Background correlation removal  Low-rank and sparse matrix decomposition   Time-Domain Nuclear Magnetic Resonance Investigation of Water Dynamics in Different Ginger Cultivars 期刊论文  OAI收割 JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY, 2016, 卷号: 64, 期号: 2, 页码: 470-477 作者:  Huang, Chongyang;  Zhou, Qi;  Gao, Shan;  Bao, Qingjia;  Chen, Fang 收藏  |  浏览/下载：24/0  |  提交时间：2016/03/18 ginger  low-field NMR  water distribution  metabonomics  Pearsons's correlation