中国科学院机构知识库网格系统: 检索

浏览/检索结果: 共6条，第1-6条

帮助

条数/页：排序方式：
	Determining the ecological security pattern and important ecological regions based on the supply-demand of ecosystem services: A case study of Xuzhou City, China 期刊论文 OAI收割 FRONTIERS IN PUBLIC HEALTH, 2023, 卷号: 11 作者: Wang, Ziyi; Zhang, Ji; Chen, Jiangchang; Gao, Huizhi; Li, Jiaming \| 收藏 \| 浏览/下载：24/0 \| 提交时间：2023/04/06 ecological security pattern important ecological regions supply-demand of ecosystem services circuit theory research framework
	The Integration of New-Type Urbanization and Rural Revitalization Strategies in China: Origin, Reality and Future Trends 期刊论文 OAI收割 LAND, 2021, 卷号: 10, 期号: 2, 页码: 16 作者: Chen, Mingxing; Zhou, Yuan; Huang, Xinrong; Ye, Chao \| 收藏 \| 浏览/下载：25/0 \| 提交时间：2021/04/25 new-type urbanization rural revitalization urban bias integration urban-rural relation research framework
	The Integration of New-Type Urbanization and Rural Revitalization Strategies in China: Origin, Reality and Future Trends 期刊论文 OAI收割 LAND, 2021, 卷号: 10, 期号: 2, 页码: 16 作者: Chen, Mingxing; Zhou, Yuan; Huang, Xinrong; Ye, Chao \| 收藏 \| 浏览/下载：15/0 \| 提交时间：2021/04/25 new-type urbanization rural revitalization urban bias integration urban-rural relation research framework
	Knowledge Brokerage for Impact Assessment of Land Use Scenarios in Inner Mongolia, China: Extending and Testing the FoPIA Approach SCI/SSCI论文 OAI收割 2015 作者: Konig H. J.; Podhora, A.; Zhen, L.; Helming, K.; Yan, H. M. 收藏 \| 浏览/下载：28/0 \| 提交时间：2015/12/09 landscape functioning sustainable development impact assessment expert knowledge knowledge brokerage policy support environmental-management interdisciplinary research sustainable development assessment tools wind erosion top-down framework policies bottom productivity
	The new approach for infrared target tracking based on the particle filter algorithm (EI CONFERENCE) 会议论文 OAI收割 International Symposium on Photoelectronic Detection and Imaging 2011: Advances in Infrared Imaging and Applications, May 24, 2011 - May 24, 2011, Beijing, China 作者: Sun H.; Han H.-X.; Sun H. 收藏 \| 浏览/下载：60/0 \| 提交时间：2013/03/25 Target tracking on the complex background in the infrared image sequence is hot research field. It provides the important basis in some fields such as video monitoring precision and video compression human-computer interaction. As a typical algorithms in the target tracking framework based on filtering and data connection the particle filter with non-parameter estimation characteristic have ability to deal with nonlinear and non-Gaussian problems so it were widely used. There are various forms of density in the particle filter algorithm to make it valid when target occlusion occurred or recover tracking back from failure in track procedure but in order to capture the change of the state space it need a certain amount of particles to ensure samples is enough and this number will increase in accompany with dimension and increase exponentially this led to the increased amount of calculation is presented. In this paper particle filter algorithm and the Mean shift will be combined. Aiming at deficiencies of the classic mean shift Tracking algorithm easily trapped into local minima and Unable to get global optimal under the complex background. From these two perspectives that "adaptive multiple information fusion" and "with particle filter framework combining" we expand the classic Mean Shift tracking framework.Based on the previous perspective we proposed an improved Mean Shift infrared target tracking algorithm based on multiple information fusion. In the analysis of the infrared characteristics of target basis Algorithm firstly extracted target gray and edge character and Proposed to guide the above two characteristics by the moving of the target information thus we can get new sports guide grayscale characteristics and motion guide border feature. Then proposes a new adaptive fusion mechanism used these two new information adaptive to integrate into the Mean Shift tracking framework. Finally we designed a kind of automatic target model updating strategy to further improve tracking performance. Experimental results show that this algorithm can compensate shortcoming of the particle filter has too much computation and can effectively overcome the fault that mean shift is easy to fall into local extreme value instead of global maximum value.Last because of the gray and fusion target motion information this approach also inhibit interference from the background ultimately improve the stability and the real-time of the target track. 2011 Copyright Society of Photo-Optical Instrumentation Engineers (SPIE).
	Dynamic coupling analysis and modeling for stabilized platform of rolling-pitching seeker (EI CONFERENCE) 会议论文 OAI收割 2011 International Conference on Electric Information and Control Engineering, ICEICE 2011, April 15, 2011 - April 17, 2011, Wuhan, China 作者: Liu H.; Liu H.; Liu H. 收藏 \| 浏览/下载：13/0 \| 提交时间：2013/03/25 Missile's attitude change will be delivered to visual axis through stabilized platform during maneuvering flight and the missile vibration will be an interference source to visual axis stabilization. In order to solve this problem the coupling relationship between missile attitude and visual axis is obtained by Coordinate transformation. When the seeker stably tracks a target the angular velocity of visual axis in inertial space is zero so the relative angular velocity of roll axis and pitch axis can be derived for servo control. According to Oura dynamics equation the dynamic models of roll axis and pitch axis were established and kinetic equations of two axises were obtained. The dynamic models can provide theoretical basis to developing research of servo control system and structural optimization design of stabilized platform. Finally some measures could reduce the dynamic coupling between the framework was given. 2011 IEEE.