中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
机构
采集方式
内容类型
发表日期
学科主题
筛选

浏览/检索结果: 共22条,第1-10条 帮助

条数/页: 排序方式:
Sentence Context Modulates the Neighborhood Frequency Effect in Chinese Reading: Evidence From Eye Movements 期刊论文  OAI收割
JOURNAL OF EXPERIMENTAL PSYCHOLOGY-LEARNING MEMORY AND COGNITION, 2021, 页码: 12
作者:  
Yao, Panpan;  Slattery, Timothy J.;  Li, Xingshan
  |  收藏  |  浏览/下载:57/0  |  提交时间:2022/01/21
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.  
Time and frequency transfer using BDS-2 and BDS-3 carrier-phase observations 期刊论文  OAI收割
IET RADAR SONAR AND NAVIGATION, 2019, 卷号: 13, 期号: 8, 页码: 1249-1255
作者:  
Zhang, Pengfei;  Tu, Rui;  Zhang, Rui;  Liu, Na;  Gao, Yuping
  |  收藏  |  浏览/下载:22/0  |  提交时间:2021/11/29
Dynamic linear modeling, identification and precise control of a walking piezo-actuated stage 期刊论文  OAI收割
Mechanical Systems and Signal Processing, 2019, 卷号: 128, 页码: 141-152
作者:  
P.Z.Li;  X.D.Wang;  L.Zhao;  D.F.Zhang;  K.Guo
  |  收藏  |  浏览/下载:31/0  |  提交时间:2020/08/24
On a Novel Current Control Method for Matrix Converter 会议论文  OAI收割
作者:  
Wang Bin;  Diao Chen;  Cai Ning;  Guo Ling;  IEEE
  |  收藏  |  浏览/下载:21/0  |  提交时间:2018/08/20
A preliminary study of movement intensity during a Go/No-Go task and its association with ADHD outcomes and symptom severity 期刊论文  OAI收割
CHILD AND ADOLESCENT PSYCHIATRY AND MENTAL HEALTH, 2016, 卷号: 10, 期号: 0, 页码: 1-10
作者:  
Li, Fenghua;  Zheng, Yi;  Smith, Stephanie D.;  Shic, Frederick;  Moore, Christina C.
收藏  |  浏览/下载:37/0  |  提交时间:2017/02/13
Optimal closed-loop bandwidth of tip-tilt correction loop in adaptive optics system 期刊论文  OAI收割
ACTA PHYSICA SINICA, 2014, 卷号: 63, 期号: 6
作者:  
Guo You-Ming;  Ma Xiao-Yu;  Rao Chang-Hui
收藏  |  浏览/下载:23/0  |  提交时间:2015/07/10
Study on time registration method for photoelectric theodolite data fusion (EI CONFERENCE) 会议论文  OAI收割
10th World Congress on Intelligent Control and Automation, WCICA 2012, July 6, 2012 - July 8, 2012, Beijing, China
Yang H.-T.; Gao H.-B.
收藏  |  浏览/下载:18/0  |  提交时间:2013/03/25
Stabilization and tracking precision improved based on disturbance observer (EI CONFERENCE) 会议论文  OAI收割
2011 2nd International Conference on Mechanic Automation and Control Engineering, MACE 2011, July 15, 2011 - July 17, 2011, Inner Mongolia, China
Sun G.; Zhu M.; Jia H.
收藏  |  浏览/下载:31/0  |  提交时间:2013/03/25
Based on the kinematics of semi-strapdown seeker  the framework coordinate of the semi-strapdown seeker is established and the optical axis stabilization equation of semistrapdown seeker is deduced based on product of exponential (POE) formula. The stabilization control principle block diagram of semi-strapdown seeker is shown based on the stabilization equation. The main influence factors of the stability precision are pointed out  such as friction disturbance  velocity measurement noise and missile disturbance. For the sake of improving the stabilization precision and tracking precision  disturbance observer was proposed in the inner loop of semi-strapdown seeker servo-control system. The low frequency external disturbance and high frequency velocity measurement noise are effectively restrained by the disturbance observer as shown in hardware-in-loop simulation  and optical axis stabilization precision and tracking precision are greatly improved. 2011 IEEE.