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Chinese Academy of Sciences Institutional Repositories Grid
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浏览/检索结果: 共7条,第1-7条 帮助

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The mechanism of gas-water extraction in micro- and nanoscale pores in shale gas reservoirs: Based on gas-water interactions 期刊论文  OAI收割
CHEMICAL ENGINEERING SCIENCE, 2022, 卷号: 248, 页码: 14
作者:  
Wang, Ke;  Ye, Kairui;  Jiang, Beibei;  Li, Haitao;  Tan, Yongsheng
  |  收藏  |  浏览/下载:51/0  |  提交时间:2022/02/17
Interaction and Mechanism between Imidazolium Ionic Liquids and the Zwitterionic Amino Acid Tyr: a DFT Study 期刊论文  OAI收割
ACTA PHYSICO-CHIMICA SINICA, 2021, 卷号: 37, 期号: 10, 页码: 10
作者:  
Wu, Zhiwei;  Ding, Weilu;  Zhang, Yaqin;  Wang, Yanlei;  He, Hongyan
  |  收藏  |  浏览/下载:75/0  |  提交时间:2021/08/31
Influence of molten salt with or without V2O5 on hot corrosion and high-temperature tribological performance of HVOF-sprayed Ni-based self-lubricating composite coating 期刊论文  OAI收割
Surface & Coatings Technology, 2021, 期号: 417, 页码: 1-12
作者:  
Enkang Hao;  Yijing Wang;  Xiaoqin Zhao;  Meizhen Gao;  Jianmin Chen
  |  收藏  |  浏览/下载:52/0  |  提交时间:2021/12/06
Application and prospect of hard rock TBM for deep roadway construction in coal mines 期刊论文  OAI收割
TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY, 2018, 卷号: 73, 页码: 105-126
作者:  
Huang, Xing
  |  收藏  |  浏览/下载:32/0  |  提交时间:2018/06/05
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:63/0  |  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).  
Analysis of the disturbance of remote aerial detector induced by laser (EI CONFERENCE) 会议论文  OAI收割
High-Power Lasers and Applications III, November 8, 2004 - November 11, 2004, Beijing, China
作者:  
Zhou J.;  Fu Y.;  Guo J.;  Guo J.
收藏  |  浏览/下载:46/0  |  提交时间:2013/03/25
It is important to study the interaction effect between laser and photoelectric detector. In most of the laser detecting systems  laser must irradiate the photoelectric detector. The detector will be saturated or damaged easily if the fluence of the laser is higher than the saturation threshold of the detector. Now  many photoelectric detectors are used in space. To achieve their interaction  "Cat's eye" effect is applied to find and locate the remote aerial detector by laser. The possibility and mechanism of disturbance to remote aerial detector induced by laser are analyzed  and the factors of influence are also analyzed. The fluence of laser on the photoactive area of remote aerial detector is estimated. With two samples of CCD and TV tracking system  the mechanism of soft damage to CCD and TV tracking system induced by laser are introduced. The saturation of CCD and crosstalk of CCD are the main reasons of disturbance. When the tracking system is used in wave-door tracking mode  it will lose its tracking target if the saturation or crosstalk of CCD can enter into wave-door. At last  the influence to disturbance induced by atmosphere effect is also analyzed.  
Interaction mechanism between ecological enviromnent and land use and cover change in valley-basin megapolis: a case study of Lanzhou 会议论文  OAI收割
Dong S. C.; Fan Z. J.; Li Y. C.; Liu G. H.; Ieee
收藏  |  浏览/下载:21/0  |  提交时间:2012/06/30