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Using Schema Teaching Mode for Students' Cultural Capability through Learning Culture-Type English Courses in Class 会议论文
作者:  Liu, Zi;  Ma, Qiong;  Dong, Xiao-Hong
收藏  |  浏览/下载：8/0  |  提交时间：2019/11/26
Design of Safety-Critical Software Reliability Demonstration Test Based on Bayesian Theory 会议论文
PROCEEDINGS OF 2013 INTERNATIONAL CONFERENCE ON QUALITY, RELIABILITY, RISK, MAINTENANCE, AND SAFETY ENGINEERING (QR2MSE), VOLS I-IV, 2013-01-01
作者:  Wu, Yumei;  Li, Haifeng;  Yu, Yongli
收藏  |  浏览/下载：1/0  |  提交时间：2020/01/06
Design of transmission of high-speed CCD driving signals (EI CONFERENCE) 会议论文
2011 International Conference on Mechatronic Science, Electric Engineering and Computer, MEC 2011, August 19, 2011 - August 22, 2011, Jilin, China
Zhang S.; Xue X.
收藏  |  浏览/下载：34/0  |  提交时间：2013/03/25
In order to overcome the distortion problem of CCD driving signals caused by signal transmission  the detail implementation of transmission of high-speed CCD driving signals based on transmission line theory is discussed. The CCD driving signals are critical to the CCD to produce high quality images. In high speed application these drivers will occupy more circuit board areas and can not be put very close to the CCD. So the driving signals must be transmitted. Because the CCD exhibits capacitive load  the driving signals distortion problem is much severe. Transmission line theory is used to analyze the problem. The method of source termination is adopted to avoid signal reflections. Meanwhile the characteristic impedance of the circuit board and the resistance of terminal resistor are designed small enough to decrease the rising and falling time of the driving signals. Experimental results show that there is no distortion of the high speed driving signals after transmission. 2011 IEEE.  
Enhancement of dielectric properties by additions of Ni nano-particles to a X7R-type barium titanate ceramic matrix 会议论文
Ceramics International, 3rd Asian Meeting on Electroceramics (AMEC-3), , Singapore, INSPEC
Renzheng Chen; Xiaohui Wang; Hai Wen; Longtu Li; Zhilun Gui
收藏  |  浏览/下载：5/0
Simulation of structural parameters and superconducting transition temperature of MgB/sub 2/ under pressure 会议论文
Materials Science Forum, Fifth Pacific Rim International Conference on Advanced Materials and Processing PRICM-5, Beijing, China, INSPEC
Yang Shao; Zhang, X.; Fuling Tang
收藏  |  浏览/下载：7/0
Gimbal displacement error analysis on an electro-optical seeker (EI CONFERENCE) 会议论文
Optical Design and Testing IV, October 18, 2010 - October 20, 2010, Beijing, China
Jiang Z.; Zhang X.; Ai X.; Wei Q.; Jia H.
收藏  |  浏览/下载：23/0  |  提交时间：2013/03/25
It is essential to analyze the gimbal displacement errors for a seeker due to the importance for cueing of targets and tracking for the final approach. Otherwise  for a seeker electro-driven with a concentric glass dome  the large errors will decrease the picking  pointing  and tracking precision rooted from the displacement errors existing between the rotation center of the optical system and the gimbal. And the gimbaled camera system displacement errors are never eliminated but reduced due to the geometric errors consists of geometric tolerances of gimbal structure  manufacture  installation and vibration coming from working environment. In this paper  the gimbal displacement errors in an electro-optically stabilized platform resulting from geometric errors and environment errors were analyzed and shown in detail. The mathematical modal of the gimbal displacement errors created based on multi-body dynamics demonstrated the connection between the gimbal displacement errors and the stabilized platform. Taking a visible light image seeker as a case  the diameter is 120mm  and the geometric tolerances came from the values of primary design and the vibration data came from the environmental vibration test on the pitch-yaw seeker  and at the same time  the errors resulting from installation were considered too. Based on calculating  the maximum gimbal displacement error will reach to 0.2mm for pitching angle smaller than 40 and yawing angle smaller than 60. However  the critical parts have been found out according to the probability theory and the reliability analysis successfully used in the paper  and finally  the maximum gimbal displacement error reduced to 0.1mm  which is acceptable corresponding to the picking  pointing and tracking precision for an optical imaging seeker. 2010 Copyright SPIE - The International Society for Optical Engineering.  
Research on the local government communication mechanism from the governance perspective: A case study of the "11.17" mass incident in Longnan, Gansu Province 会议论文
2010 International Conference on Management and Service Science, MASS 2010, Wuhan, China, August 24, 2010 - August 26, 2010
作者:  Wei, Ningning
收藏  |  浏览/下载：0/0  |  提交时间：2017/01/18
Study on the influence and disposal method of the micro-cracks of optical components (EI CONFERENCE) 会议论文
4th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Advanced Optical Manufacturing Technologies, November 19, 2008 - November 21, 2008, Chengdu, China
Chen X.-P.; Xuan B.; Wang P.; Li J.-F.; Song S.-M.; Zhang H.; Xie J.-J.
收藏  |  浏览/下载：21/0  |  提交时间：2013/03/25
Micro-crack is one of the most effective factor to the intensity and service life of optical components. Owing to the micro-crack on surface  actual strength of optical components is reduced severely  even less than ten-percent of its theoretical strength. According to fracture mechanics  the mechanisms of the formation and propagation of micro-crack and the growth theory of sub-critical micro-crack are discussed in the paper firstly. Based on practice  an on-line test method disposing etching holes-the molecule-infiltrating method and the principles of acid-etching method disposing micro-crack are described. Followed by the demolishing mechanism of abrasives and a more reasonable removal redundancy of fine-grinding and polishing during  optical production is given by using abrasives in different-size orderly. 2009 SPIE.  
System Failure Analysis Based On Complex Network Theory 会议论文
作者:  Jiang, Hongquan;  Gao, Jianmin;  Chen, Fumin
收藏  |  浏览/下载：2/0  |  提交时间：2019/12/18
Thermoelastic buckling behavior of functionally graded Circular/annular plates based on first order shear deformation plate theory 会议论文
Huangshan, China, June 3, 2008 - June 8, 2008
作者:  Ma, L.S.;  Fu, J.Q.;  Yang, F.
收藏  |  浏览/下载：7/0  |  提交时间：2020/11/15

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