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Far offset refractive velocity properties of the Cenozoic strata in the northern South China Sea 期刊论文  OAI收割
CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION, 2014, 卷号: 57, 期号: 7, 页码: 2223-2234
作者:  
Chen Jiang-Xin;  Zhang Bao-Jin;  Song Hai-Bin
  |  收藏  |  浏览/下载:27/0  |  提交时间:2018/09/26
Far offset refractive velocity properties of the Cenozoic strata in the northern South China Sea 期刊论文  OAI收割
CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION, 2014, 卷号: 57, 期号: 7, 页码: 2223-2234
作者:  
Chen Jiang-Xin;  Zhang Bao-Jin;  Song Hai-Bin
  |  收藏  |  浏览/下载:20/0  |  提交时间:2018/09/26
A prospective study to evaluate the efficacy of an intracardiac electrogram-based atrioventricular and interventricular intervals optimization method in cardiac resynchronization therapy 期刊论文  OAI收割
CHINESE MEDICAL JOURNAL, 2012, 卷号: 125, 期号: 3, 页码: 428-433
作者:  
Hua Wei;  Wang Dongmei;  Cai Lin;  Sun Chaofeng;  Fu Guosheng
  |  收藏  |  浏览/下载:16/0  |  提交时间:2021/02/02
A prospective study to evaluate the efficacy of an intracardiac electrogram-based atrioventricular and interventricular intervals optimization method in cardiac resynchronization therapy 期刊论文  OAI收割
CHINESE MEDICAL JOURNAL, 2012, 卷号: 125, 期号: 3, 页码: 428-433
作者:  
Hua Wei
  |  收藏  |  浏览/下载:14/0  |  提交时间:2021/02/02
Structure buckling load interval analysis of supercavitating projectile (EI CONFERENCE) 会议论文  OAI收割
2011 9th International Conference on Reliability, Maintainability and Safety: Safety First, Reliability Primary, ICRMS'2011, June 12, 2011 - June 15, 2011, Guiyang, China
作者:  
Zhou L.
收藏  |  浏览/下载:26/0  |  提交时间:2013/03/25
As a result of supercavitating projectiles with high underwater velocity  their structures undergo high longitudinal force. It is necessary to perform structure buckling load interval analysis because the uncertainty of structural own parameters should be considered. Critical buckling load of supercavitating projectiles is calculated by Galerkin method. The partial matrixes of critical buckling load implicit function to each uncertainty variable are deduced  and the interval of structure critical buckling load is calculated by interval analysis and convex model methods. Numerical results show that the nominal value  lower and upper bounds of critical buckling load increase with the increment of the ratio of base diameter to cavitator diameter. And the uncertainty degree of basic variables should be controlled as far as possible in the project for high reliability. 2011 IEEE.  
Estimation algorithm of mobile OFDM CFOs based on step-size (EI CONFERENCE) 会议论文  OAI收割
2009 International Conference on Information Engineering and Computer Science, ICIECS 2009, December 19, 2009 - December 20, 2009, Wuhan, China
Lin L.; Qiao Y.-F.; Su W.-X.
收藏  |  浏览/下载:26/0  |  提交时间:2013/03/25
In order to maintain orthogonality among subcarriers for mobile OFDM  a CFOs step-size estimation model is established to avoid severe performance degradation caused by ICI  and algorithmic stability  step-size parameter  the error of CFOs estimate and etc are investigated. First  after an averaging window algorithm is introduced  the mathematic model of step-size estimation algorithm is obtained through step-size parameter and time-varying CFOs. Then  based on the results of MATLAB simulation  the determination of step-size parameter  the advantages of step-size algorithm and precision are discussed. Finally  time sequence plots of added CP  interleaver and subcarrier modulation with VHDL are presented. Experimental results indicate that the maximum of CFOs errors is 0.00987 in 3 variance interval  when mobile velocity is 400 km/h  according with verdicted principle that in order for the ICI effects to be negligible  the error of CFOs estimation must be accurate within 1-2% of the subcarrier spacing  and programs can correctly implement on circuit board. 2009 IEEE.