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浏览/检索结果: 共8条,第1-8条 帮助

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Sex differences in resting-state cerebral activity alterations in internet gaming disorder 期刊论文  OAI收割
BRAIN IMAGING AND BEHAVIOR, 2019, 卷号: 13, 期号: 5, 页码: 1406-1417
作者:  
Sun, Yawen;  Wang, Yao;  Han, Xu;  Jiang, Wenqing;  Ding, Weina
  |  收藏  |  浏览/下载:90/0  |  提交时间:2019/12/06
Ground experiments on a liquid bridge facility for TG-2 space laboratory 会议论文  OAI收割
65th International Astronautical Congress 2014: Our World Needs Space, IAC 2014, Toronto, ON, Canada, September 29, 2014 - October 3, 2014
作者:  
Duan L(段俐);  Kang Q(康琦)
收藏  |  浏览/下载:51/0  |  提交时间:2017/05/27
Dynamic optimization of valveless micropump (EI CONFERENCE) 会议论文  OAI收割
2011 16th International Solid-State Sensors, Actuators and Microsystems Conference, TRANSDUCERS'11, June 5, 2011 - June 9, 2011, Beijing, China
Deng Y. B.; Wu Y. H.; Xuan M.; Korvink J. G.; Liu Z. Y.
收藏  |  浏览/下载:20/0  |  提交时间:2013/03/25
Correction method for detection of the frequencies of railway fsk signals (EI CONFERENCE) 会议论文  OAI收割
2008 9th International Conference on Signal Processing, ICSP 2008, October 26, 2008 - October 29, 2008, Beijing, China
作者:  
Yu J.
收藏  |  浏览/下载:63/0  |  提交时间:2013/03/25
In order to acquire the information of railway binary frequency-shift keying signals  which include upper/down side frequencies and base low-frequency with high-accuracy  a novel frequency detection algorithm for France UM-71 system is proposed. Combining fast Fourier transform with the ratio correction method  the carrier frequency and the base frequency are obtained. Furthermore  the hardware consumption has been decreased. And it possesses the advantage of simple algorithm and fast operation speed. Comparing with the detection of the base frequency  the upper/down side frequency of railway signal is more difficult. Based on spectrum analysis and the spectrum correction  a new method  which adopts the sliding window  is put forward in this paper. The absolute differences between the upper side frequencies and the down side frequencies obtained are regarded as the criterion for judgment. Then the set of data  in which the maximum absolute value is  is to be the result of the upper/down side frequency. Because the sliding window will go through every stage when the upper/down side frequency changes  therefore  it is not sensitive enough to the position of data which need to be transformed. Using the method mentioned above  the experiment results show that the accuracy requirement of the side frequency is satisfied well. 2008 IEEE.  
Arc fault signatures detection on aircraft wiring system (EI CONFERENCE) 会议论文  OAI收割
6th World Congress on Intelligent Control and Automation, WCICA 2006, June 21, 2006 - June 23, 2006, Dalian, China
Hongkun Z.; Tao C.; Wenjun L.
收藏  |  浏览/下载:22/0  |  提交时间:2013/03/25
Study of removing striping noise in CCD image (EI CONFERENCE) 会议论文  OAI收割
ICO20: Optical Information Processing, August 21, 2005 - August 26, 2005, Changchun, China
作者:  
Liu H.;  Liu H.;  Liu H.
收藏  |  浏览/下载:16/0  |  提交时间:2013/03/25
Striping noise is the common system noise during formation of image using linear array CCD and has the character of periodicity  directivity and banding distributing. It can be caused by errors in internal calibration devices  or by slight gain/offset differences among the elements that conform the array of detectors. Striping noise covers up useful information in CCD image and brings adverse effect to image interpretation. On the basis of analyzing wavelet decomposed coefficient  the regularities of distribution about striping noise in wavelet coefficient is found  thereby the method of wavelet threshold selection which is suitable to striping noise distribution is put forward. According to Donoho's method about denoising using wavelet  the image including striping noise is processed. Comparing the power spectrum of processed image with the one of original image polluted by striping noise in frequency field  we find pulse brought by striping noise is removed and the goal which reserves image details and reduces stripes is achieved.  
Numerical analysis of two distinct types of vortex dislocation in wake-type flows with different spanwise nonuniformities 会议论文  OAI收割
3rd M.I.T. Conference on Computational Fluid and Solid Mechanics, Boston, MA, United states, June 14, 2005 - June 17, 2005
作者:  
Ling GC(凌国灿);  Niu JY(牛家玉)
收藏  |  浏览/下载:27/0  |  提交时间:2017/06/01
Quantitative analysis on euglenoid distribution in seven regions of China 会议论文  OAI收割
Workshop on Biogeography of Freshwater Algae, at the 5th International Phycological Congress, QINGDAO, PEOPLES R CHINA, JUN, 1994
Shi, ZX
收藏  |  浏览/下载:218/64  |  提交时间:2010/11/11