中国科学院机构知识库网格
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浏览/检索结果: 共8条,第1-8条 帮助

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The use of R in photosynthesis research 期刊论文  OAI收割
FUNCTIONAL PLANT BIOLOGY, 2021
作者:  
Liu, Yasi;  Wang, Xiangping;  Fan, Dayong;  Lai, Jiangshan
  |  收藏  |  浏览/下载:21/0  |  提交时间:2023/02/24
Combined carrier phase and code phase passive radiation source localisation method 期刊论文  OAI收割
IET RADAR SONAR AND NAVIGATION, 2020, 卷号: 14, 期号: 1, 页码: 147-155
作者:  
Li, Youyang;  Wang, Xue;  Lu, Xiaochun
  |  收藏  |  浏览/下载:20/0  |  提交时间:2020/11/09
Will This Bug-fixing Change Break Regression Testing? 会议论文  OAI收割
the International Symposium on Empirical Software Engineering and Measurement(ESEM), 中国北京友谊宾馆, 2015-10-25
Xinye Tang; Song Wang; Ke Mao
  |  收藏  |  浏览/下载:25/0  |  提交时间:2016/06/04
LABTM control system based on FPGA (EI CONFERENCE) 会议论文  OAI收割
2nd International Conference on Mechatronics and Applied Mechanics, ICMAM 2012, December 8, 2012 - December 9, 2012, Taiwan
作者:  
Wang Y.;  Yu P.;  Yu P.;  Wang Y.;  Wang Y.
收藏  |  浏览/下载:152/0  |  提交时间:2013/03/25
This paper presents the digital PI control method for design and simulation of a high precision limited angle brushless torque motor control system in Field Programmable Gate Array device (FPGA). The direct drive structures which are widely applied in many servo control fields. Matlab Xilinx System GeneratorR toolbox based on Fixed-Point Arithmetic is used to design the digital PI controller using DSP architecture  plot the responses of the control system and generate the VHDL source code. The control system model consists of a digital PI  a real LABTM  and a real absolute Inductosyn  encoder to rpm and position blocks. Through loading generated codes in process of the simulation that built by the digital discrete model  it is verified that the rising time of current loop is only 1.2ms  and rate loop is 8ms  overshoot is rarely 4.2%. Finally  the comprehensive positioning accuracy of system can reach up to 5 arc sec  and the rate jitter achieves 5% with the 4 arc sec accuracy absolute Inductosyn. (2013) Trans Tech Publications  Switzerland.  
A survey of code-based change impact analysis techniques 期刊论文  OAI收割
SOFTWARE TESTING VERIFICATION & RELIABILITY, 2013, 卷号: 23, 期号: 8, 页码: 613-646
Li, Bixin; Sun, Xiaobing; Leung, Hareton; Zhang, Sai
  |  收藏  |  浏览/下载:32/0  |  提交时间:2014/12/16
Systemic model for software cost analyzing and optimizing (EI CONFERENCE) 会议论文  OAI收割
2011 IEEE 3rd International Conference on Communication Software and Networks, ICCSN 2011, May 27, 2011 - May 29, 2011, Xi'an, China
作者:  
Zhanglei;  Zhanglei
收藏  |  浏览/下载:59/0  |  提交时间:2013/03/25
The compression and storage method of the same kind of medical images-DPCM (EI CONFERENCE) 会议论文  OAI收割
4th International Conference on Photonics and Imaging in Biology and Medicine, September 3, 2005 - September 6, 2005, Tianjin, China
作者:  
Liu H.;  Liu H.;  Liu H.
收藏  |  浏览/下载:13/0  |  提交时间:2013/03/25
Medical imaging has started to take advantage of digital technology  opening the way for advanced medical imaging and teleradiology. Medical images  however  require large amounts of memory. At over 1 million bytes per image  a typical hospital needs a staggering amount of memory storage (over one trillion bytes per year)  and transmitting an image over a network (even the promised superhighway) could take minutes - too slow for interactive teleradiology. This calls for image compression to reduce significantly the amount of data needed to represent an image. Several compression techniques with different compression ratio have been developed. However  the lossless techniques  which allow for perfect reconstruction of the original images  yield modest compression ratio  while the techniques that yield higher compression ratio are lossy  that is  the original image is reconstructed only approximately Medical imaging poses the great challenge of having compression algorithms that are lossless (for diagnostic and legal reasons) and yet have high compression ratio for reduced storage and transmission time. To meet this challenge  we are developing and studying some compression schemes  which are either strictly lossless or diagnostically lossless  taking advantage of the peculiarities of medical images and of the medical practice. In order to increase the Signal to-Noise Ratio (SNR) by exploitation of correlations within the source signal  a method of combining differential pulse code modulation (DPCM) is presented.  
一种开放源代码的网络仿真器的原理与实现 期刊论文  OAI收割
计算机工程与应用, 2004, 卷号: 40, 期号: 15, 页码: 137
王秀利; 王永吉
  |  收藏  |  浏览/下载:16/0  |  提交时间:2010/08/17