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浏览/检索结果: 共9条,第1-9条 帮助

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Estimation of Partially Linear Panel Data Models with Cross-Sectional Dependence 期刊论文  OAI收割
JOURNAL OF SYSTEMS SCIENCE & COMPLEXITY, 2021, 页码: 12
作者:  
Huang, Bai;  Sun, Yuying;  Wang, Shouyang
  |  收藏  |  浏览/下载:35/0  |  提交时间:2021/04/26
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:52/0  |  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.  
Tests for homogeneity of risk differences in stratified design with correlated bilateral data 期刊论文  OAI收割
JOURNAL OF APPLIED STATISTICS, 2019, 页码: 23
作者:  
Qiu, Shi-Fang
  |  收藏  |  浏览/下载:73/0  |  提交时间:2020/01/10
Efficient virtual network transmission using correlated equilibrium on Xen-based platform 期刊论文  OAI收割
JOURNAL OF VISUAL COMMUNICATION AND IMAGE REPRESENTATION, 2016, 卷号: 35, 页码: 248-256
作者:  
Ma, Hongrun;  Li, Liang;  Liang, Yongquan;  Chen, Junpeng;  Yin, Jian
  |  收藏  |  浏览/下载:35/0  |  提交时间:2019/12/13
Observation and Modeling of Geostationary Orbit Electron Energization Induced by Enhanced Dayside Whistler-Mode Waves 期刊论文  OAI收割
PLASMA SCIENCE & TECHNOLOGY, 2013, 卷号: 15, 期号: 9
作者:  
He Yihua;  Yang Chang;  He Zhaoguo;  Zhang Zelong;  Xiao Fuliang
收藏  |  浏览/下载:15/0  |  提交时间:2015/10/29
Design of driving circuit for binocular CCD image system (EI CONFERENCE) 会议论文  OAI收割
5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optoelectronic Materials and Devices for Detector, Imager, Display, and Energy Conversion Technology, April 26, 2010 - April 29, 2010, Dalian, China
作者:  
Zhang X.;  Zhang X.;  Zhang X.
收藏  |  浏览/下载:42/0  |  提交时间:2013/03/25
The paper designs a driving circuit of high sensitive  wide dynamic and high signal-to-noise ratio for binocular CCD imaging system which adopts a Dalsa-made high resolution full-frame 33-mega pixels area CCD FTF5066M. Inner structure and driving timing of the FTF5066M sensor are presented. Field Programmable Gate Array (FPGA) is used as the main device to accomplish the timing design of the circuits and power driver control of the two sensors. By using the Correlated Double Sampling (CDS) technique  the video noise is reduced and the SNR of the system is increased. A 12- bit A/D converter is used to improve the image quality. The output rate of the imaging system designed with integrated chip can reach to 1.3 frames per second through bi-channel. For its good performance  low power consumption and small volume  the driving system can be applied to aeronautics and astronautics field. With a further improvement  a maximum data output rate of 2.7 frames per second can be reached through all the eight channels of the two CCDs. 2010 Copyright SPIE - The International Society for Optical Engineering.  
Unbiased chi(2) estimator for linear function fit involving correlated data 期刊论文  OAI收割
HIGH ENERGY PHYSICS AND NUCLEAR PHYSICS-CHINESE EDITION, 2007, 卷号: 31, 期号: 8, 页码: 745-749
作者:  
Mo XH(莫晓虎);  Mo, XH
收藏  |  浏览/下载:15/0  |  提交时间:2016/06/28
A goodness-of-fit test for the marginal cox model for correlated interval-censored failure time data 期刊论文  OAI收割
BIOMETRICAL JOURNAL, 2006, 卷号: 48, 期号: 6, 页码: 1020-1028
作者:  
Wang, Lianming;  Sun, Liuquan;  Sun, Jianguo
  |  收藏  |  浏览/下载:13/0  |  提交时间:2018/07/30
Different X-2 forms for correlated data and their properties 期刊论文  OAI收割
HIGH ENERGY PHYSICS AND NUCLEAR PHYSICS-CHINESE EDITION, 2003, 卷号: 27, 期号: 9, 页码: 747-753
作者:  
Mo XH(莫晓虎);  Zhu YS(朱永生);  Mo, XH;  Zhu, YS
收藏  |  浏览/下载:26/0  |  提交时间:2016/06/28