中国科学院机构知识库网格系统: 检索

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	Effects of random damages on dynamic behavior of metallic sandwich panel with truss core 期刊论文 OAI收割 COMPOSITES PART B-ENGINEERING, 2017, 卷号: 116, 页码: 278-290 作者: Lu LL(路玲玲); Song HW(宋宏伟); Huang CG(黄晨光); Song, HW (reprint author), Chinese Acad Sci, Inst Mech, Key Lab Mech Fluid Solid Coupling Syst, Beijing 100190, Peoples R China.; Song, HW (reprint author), Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China. 收藏 \| 浏览/下载：26/0 \| 提交时间：2017/07/24 Sandwich Panel With Truss Core Random Damages Natural Frequency Mode Shape Boundary Condition
	The effect of specimen shape and strain rate on uniaxial compressive behavior of rock material 期刊论文 OAI收割 BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT, 2016, 卷号: 75, 期号: 4, 页码: 1669-1681 作者: Liang, C. Y.; Zhang, Q. B.; Li, X.; Xin, P. \| 收藏 \| 浏览/下载：34/0 \| 提交时间：2017/11/21 Shape effect Strain rate Uniaxial compressive strength Fracture mode Rock material
	Evanescent-field interaction with carbon nanotubes for a multi-wavelength ultrafast all-fiber laser 期刊论文 OAI收割 laser physics, 2015, 卷号: 25, 期号: 5 作者: Han, X. X. 收藏 \| 浏览/下载：39/0 \| 提交时间：2015/07/22 mode-locked nanotubes D-shape fiber ultrafast fiber laser
	A visual measurement of fish locomotion based on deformable models 会议论文 OAI收割 7th International Conference on Intelligent Robotics and Applications (ICIRA), Guangzhou, PEOPLES R CHINA, DEC 17-20, 2014 作者: Xia, Chunlei(1,2); Li, Yan; Lee, Jang-Myung; Xia, Chunlei 收藏 \| 浏览/下载：24/0 \| 提交时间：2015/08/10 Fish Active Shape Models Biological studies Deformable models Model-based tracking Observation systems Posture measurement Swimming mode Visual measurements
	Integrated intensity, orientation code and spatial information for robust tracking (EI CONFERENCE) 会议论文 OAI收割 2007 2nd IEEE Conference on Industrial Electronics and Applications, ICIEA 2007, May 23, 2007 - May 25, 2007, Harbin, China 作者: Wang Y.; Wang Y.; Wang Y.; Wang Y.; Wang Y. 收藏 \| 浏览/下载：28/0 \| 提交时间：2013/03/25 real-time tracking is an important topic in computer vision. Conventional single cue algorithms typically fail outside limited tracking conditions. Integration of multimodal visual cues with complementary failure modes allows tracking to continue despite losing individual cues. In this paper we combine intensity orientation codes and special information to form a new intensity-orientation codes-special (IOS) feature to represent the target. The intensity feature is not affected by the shape variance of object and has good stability. Orientation codes matching is robust for searching object in cluttered environments even in the cases of illumination fluctuations resulting from shadowing or highlighting etc The spatial locations of the pixels are used which allow us to take into account the spatial information which is lost in traditional histogram. Histograms of intensity orientation codes and spatial information are employed for represent the target Mean shift algorithm is a nonparametric density estimation method. The fast and optimal mode matching can be achieved by this method. In order to reduce the compute time we use the mean shift procedure to reach the target localization. Experiment results show that the new method can successfully cope with clutter partial occlusions illumination change and target variations such as scale and rotation. The computational complexity is very low. If the size of the target is 3628 pixels it only needs 12ms to complete the method. 2007 IEEE.
	High power VCSEL device with periodic gain active region (EI CONFERENCE) 会议论文 OAI收割 Optoelectronic Materials and Devices II, November 2, 2007 - November 5, 2007, Wuhan, China 作者: Zhang Y.; Liu Y.; Liu Y.; Liu Y.; Qin L. 收藏 \| 浏览/下载：31/0 \| 提交时间：2013/03/25 High power vertical cavity surface emitting lasers with large aperture have been fabricated through improving passivation lateral oxidation and heat dissipation techniques. Different from conventional three quantum well structure a periodic gain active region with nine quantum wells was incorporated into the VCSEL structure with which high efficiency and high power operation were expected. The nine quantum wells were divided into three groups with each of them located at the antinodes of the cavity to enhance the coupling between the optical field and the gain region. Large aperture and bottom-emitting configuration was used to improve the beam quality and the heat dissipation. A maximum output power of 1.4W was demonstrated at CW operation for a 400m-diameter device. The lasing wavelength shifted to 995.5nm with a FWHM of 2nm at a current of 4.8A due to the internal heating and the absence of active water cooling. A ring-shape farfield pattern was induced by the non-homogeneous lateral current distribution in large diameter device. The light intensity at the center of the ring increased with increasing current. A symmetric round light spot at the center and single transverse mode operation with a divergence angle of 16 were observed with current beyond 4.8A.
	Vibratory characteristics of flexural non-uniform Euler-Bernoulli beams carrying an arbitrary number of spring-mass systems 期刊论文 OAI收割 INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES, 2002, 卷号: 44, 期号: 4, 页码: 725-743 作者: Qiao, H; Li, QS; Li, GQ 收藏 \| 浏览/下载：19/0 \| 提交时间：2016/12/05 natural frequency mode shape vibration beam spring-mass system