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Efficient single-photon-assisted entanglement concentration for partially entangled photon pairs 期刊论文  OAI收割
PHYSICAL REVIEW A, 2012, 卷号: 85, 期号: 1
Sheng, YB; Zhou, L; Zhao, SM; Zheng, BY
收藏  |  浏览/下载:23/0  |  提交时间:2013/09/17
Efficient human action recognition using accumulated motion image and support vector machines (EI CONFERENCE) 会议论文  OAI收割
International Workshop on Advanced Computational Intelligence and Intelligent Informatics, IWACIII 2011, November 19, 2011 - November 23, 2011, Suzhou, China
作者:  
Zhang X.;  Zhang J.;  Zhang J.;  Zhang X.;  Zhang X.
收藏  |  浏览/下载:74/0  |  提交时间:2013/03/25
Vision-based human action recognition provides an advanced interface  and research in this field of human action recognition has been actively carried out. This paper describes a scheme for recognizing human actions from a video sequences. The proposed method is an extension of the Motion History Image(MHI) method based on the ordinal measure of accumulated motion  which is robust to variations of appearances. We define the accumulated motion image(AMI) using image differences firstly. Then the AMI of the video sequencesis resized to a MN regulation following the standard of training phases. Finally  we employ Support Vector Machine(SVM) as a classifier to distinguish the current activity in target video sequences. In a word  our proposed algorithm not only outperforms the state of art on public available KTH data set and Weizmann data set  but also proves practical to some real world applications  in addition  this method is computationally simple and able to achieve a satisfactory accuracy.  
Optimum design of the carbon fiber thin-walled baffle for the space-based camera (EI CONFERENCE) 会议论文  OAI收割
International Symposium on Photoelectronic Detection and Imaging 2011: Space Exploration Technologies and Applications, May 24, 2011 - May 26, 2011, Beijing, China
Yan Y.; Gu S.; An Y.; Jin G.
收藏  |  浏览/下载:19/0  |  提交时间:2013/03/25
The thin-walled baffle design of the space-based camera is an important job in the lightweight space camera research task for its stringent quality requirement and harsh mechanical environment especially for the thin-walled baffle of the carbon fiber design. In the paper  an especially thin-walled baffle of the carbon fiber design process was described and it is sound significant during the other thin-walled baffle design of the space camera. The designer obtained the design margin of the thin-walled baffle that structural stiffness and strength can tolerated belong to its development requirements through the appropriate use of the finite element analysis of the walled parameters influence sensitivity to its structural stiffness and strength. And the designer can determine the better optimization criterion of thin-walled baffle during the geometric parameter optimization process in such guiding principle. It sounds significant during the optimum design of the thin-walled baffle of the space camera. For structural stiffness and strength of the carbon fibers structure which can been designed  the effect of the optimization will be more remarkable though the optional design of the parameters chose. Combination of manufacture process and design requirements the paper completed the thin-walled baffle structure scheme selection and optimized the specific carbon fiber fabrication technology though the FEM optimization  and the processing cost and process cycle are retrenchment/saved effectively in the method. Meanwhile  the weight of the thin-walled baffle reduced significantly in meet the design requirements under the premise of the structure. The engineering prediction had been adopted  and the related result shows that the thin-walled baffle satisfied the space-based camera engineering practical needs very well  its quality reduced about 20%  the final assessment index of the thin-walled baffle were superior to the overall design requirements significantly. The design method is reasonable and efficient to the other thin-walled baffle that mass and work environment requirement is requirement harsh. 2011 SPIE.  
Integrated context tacit knowledge manage model (EI CONFERENCE) 会议论文  OAI收割
2011 7th International Conference on Natural Computation, ICNC 2011, July 26, 2011 - July 28, 2011, Shanghai, China
作者:  
Liu G.;  Wang Y.-C.;  Wang Y.-C.
收藏  |  浏览/下载:35/0  |  提交时间:2013/03/25
Aimed at solving the practical problem about the difficult in the acquirement  the transformation and the sharing of the tacit knowledge  this paper have constructed a integrated context tacit knowledge modelCTKM  and the paper is based on the conclusion that knowledge is the product of certain context  the value of the knowledge depends on its context. Firstly  the model described in this paper fulfills online knowledge mutual platform  and it provide a support for the sharing transmission of the knowledge and the collection of tacit knowledge and knowledge context elements. After that  the paper constructs a context management model to finish the design of context recognition acquisition scheme and problem-based context modeling. Lastly  on the basis of the context model the paper fulfill the acquisition the expression  the sharing and the storage in the tacit knowledge management. CTKM model provide a solution of the integrated context for the tacit knowledge management and through the load of context elements achieve the effective sharing of the tacit knowledge. 2011 IEEE.  
Application of master-slave multi-communication system in pilotless airborne mapping equipment (EI CONFERENCE) 会议论文  OAI收割
5th International Symposium on Instrumentation Science and Technology, September 15, 2009 - September 18, 2009, Shenyang, China
作者:  
Chen J.;  Wang W.;  Wang W.;  Zhang Y.
收藏  |  浏览/下载:33/0  |  提交时间:2013/03/25
This paper presents a master-slave multi-communication system designed with several micro-controllers used as master and slave controllers to set signal the lamp to realize point-to-point communication through the RS422 interface. By describing a typical example of this system and the blue print of hardware and the flowchart of software  the reliable work of the system has been proved. The circuits of system are very simple and practical  and they can be used to realize all the functions of a pilotless airborne mapping equipment. It also has a strong anti-jamming capability due to its balanced transfer scheme with single transmitter and multiple receivers. It is very efficient in protecting the integrity and correctness of transmitted and received signals  avoiding the collision of signals through the bus  satisfying the communication among several micro-controllers in a single system and forming a special communication network. 2009 SPIE.