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浏览/检索结果: 共10条，第1-10条 帮助

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A new barium-containing alkali metal silicate fluoride NaBa3Si2O7F with deep-UV optical property 期刊论文  OAI收割
SCIENCE CHINA-MATERIALS, 2019, 卷号: 62, 期号: 10, 页码: 1454-1462
作者:  Miao, ZH (Miao, Zhaohong)[ 1,2,3 ];  Yang, Y (Yang, Yun)[ 1,2 ];  Wei, ZL (Wei, Zhonglei)[ 1,2,3 ];  Yang, ZH (Yang, Zhihua)[ 1,2 ];  Abudouwufu, T (Abudouwufu, Tushagu)[ 1,2 ]
  |  收藏  |  浏览/下载：56/0  |  提交时间：2019/09/24
Comparison of socioeconomic factors between surrounding and non-surrounding areas of the qinghai-tibet railway before and after its construction 期刊论文  iSwitch采集
Sustainability, 2016, 卷号: 8, 期号: 8, 页码: 17
作者:  Li, Shicheng;  Wang, Zhaofeng;  Zhang, Yili;  Wang, Yukun;  Liu, Fenggui
收藏  |  浏览/下载：33/0  |  提交时间：2019/05/09
Comparison of Socioeconomic Factors between Surrounding and Non-Surrounding Areas of the Qinghai-Tibet Railway before and after Its Construction SCI/SSCI论文  OAI收割
2016
作者:  Li S. C.;  Wang, Z. F.;  Zhang, Y. L.;  Wang, Y. K.;  Liu, F. G.
  |  收藏  |  浏览/下载：29/0  |  提交时间：2017/11/09
Design of a miniature axial flux flywheel motor with PCB winding for nanosatellites (EI CONFERENCE) 会议论文  OAI收割
2012 International Conference on Optoelectronics and Microelectronics, ICOM 2012, August 23, 2012 - August 25, 2012, Changchun, China
Wu J.
收藏  |  浏览/下载：40/0  |  提交时间：2013/03/25
This paper presents the design and analysis of an axial flux permanent-magnet (AFPM) machine for nanosatellites application. It is a miniature axial flux surface mounted permanent magnet flywheel motor  using a printed circuit board (PCB) stator winding. The PCB stator has simplified the design and construction and avoids unnecessary space  since size reduction has become one of the most important aspects of flywheel motor design for nanosatellites. The performances of the machine are estimated by combination method of three-dimensional (3D) electromagnetic finite element analysis (FEA) and approximate theoretical analysis. The back EMF and electromagnetic torque are derived. A comparison between the analysis and experimental measurement results of the prototype machine is also presented. Both simulated and experimental results show that the proposed motor would be an acceptable solution for the nanosatellite applications with advantages such as simple structure and low-cost  as multi-layer circuit board production techniques have made the production of printed circuit coils cheaper and easier. 2012 IEEE.  
Random vibration analysis on the support of strapdown inertial navigation system (EI CONFERENCE) 会议论文  OAI收割
2nd Annual Conference on Electrical and Control Engineering, ICECE 2011, September 16, 2011 - September 18, 2011, Yichang, China
作者:  Li M.
收藏  |  浏览/下载：27/0  |  提交时间：2013/03/25
Vibration of the support is an important factor to the accuracy of strapdown inertial navigation. To get vibration characteristics of the support  FEM model of the support was created with Ansys  and then response characteristics were analyzed on the support under the separated random loads during carrier flight  including the phases of subsonic and subsonic. To validate the analysis method  wide band random vibration test was done on the points of the support  which are used for mounting inertial instruments. The comparison of the analysis and the test data shows that the relative error of analysis result is not more than 13%. According to the two results the support structure was improved. Finally random vibration analysis was carried out on the improved one. The result shows that the acceleration response was largely reduced than before. This research can be a reference of performance improvement of the strapdown inertial support and navigation system precision. 2011 IEEE.  
Control strategies and error compensation methods of high precision gyro stabilized platform (EI CONFERENCE) 会议论文  OAI收割
30th Chinese Control Conference, CCC 2011, July 22, 2011 - July 24, 2011, Yantai, China
Deng K.; Cong S.; Shen H.
收藏  |  浏览/下载：27/0  |  提交时间：2013/03/25
SANA: an algorithm for sequential and non-sequential protein structure alignment 期刊论文  OAI收割
AMINO ACIDS, 2010, 卷号: 39, 期号: 2, 页码: 417-425
作者:  Wang, Lin;  Wu, Ling-Yun;  Wang, Yong;  Zhang, Xiang-Sun;  Chen, Luonan
  |  收藏  |  浏览/下载：22/0  |  提交时间：2018/07/30
Evaluating Protein Similarity from Coarse Structures 期刊论文  OAI收割
IEEE-ACM TRANSACTIONS ON COMPUTATIONAL BIOLOGY AND BIOINFORMATICS, 2009, 卷号: 6, 期号: 4, 页码: 583-593
作者:  Wang, Yong;  Wu, Ling-Yun;  Zhang, Ji-Hong;  Zhan, Zhong-Wei;  Zhang, Xiang-Sun
  |  收藏  |  浏览/下载：16/0  |  提交时间：2018/07/30
The analysis and design of low velocity estimation based on observer (EI CONFERENCE) 会议论文  OAI收割
2009 IEEE International Conference on Automation and Logistics, ICAL 2009, August 5, 2009 - August 7, 2009, Shenyang, China
作者:  Wang D.;  Zhang S.
收藏  |  浏览/下载：34/0  |  提交时间：2013/03/25
Low velocity servo system needs precision velocity estimation. An observer for low velocity estimation was proposed in this paper. First  the source of low velocity estimation errors and the shortcomings of the single period difference were analyzed. The relationship between the estimation accuracy and estimator's frequency characteristics was concluded. Then  the structure of the observer was proposed. Frequency characteristics were used to design the compensator which can stabilize the observer. The stability of the observer was also discussed. At last  the observer's estimation accuracy was evaluated through a quantitative comparison. The results of simulation and experiment have shown that the quantized error in velocity estimation decreases dramatically when a velocity observer is used. Compared with some commonly-used estimators  the phase lag accompanying the observer is much less. 2009 IEEE.  
Cross-cultural music phrase processing: An fMRI study 期刊论文  OAI收割
HUMAN BRAIN MAPPING, 2008, 卷号: 29, 期号: 3, 页码: 312-328
作者:  Nan, Yun;  Knoesche, Thomas R.;  Zysset, Stefan;  Friedericil, Angela D.;  T. R. Knosche
  |  收藏  |  浏览/下载：20/0  |  提交时间：2011/08/22