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31.
This paper presents a new approach to the extraction of a moving object from video sequence.The method is based on morphological motion filter using connected operator and a propsed new filtering criterion.The morphological motion filter aims to detect motion which is distinct from that of the background,and thereby locates independently moving physical objects in the secnes.Experiments show that the algorithm can extract object from moving backgrounds efficiently.  相似文献   
32.
PDM(product data management)is one kind of techniques based on software and database,which integrates information and process related to products.But it is not enough to perform the complication of PDM in enterprises.Then the mechanism to harmonize all kinds of information and process in needed.The paper introduces a novel approach to implement the intelligent monitor of PDM based on MAS(multi-0agent system).It carries out the management of information and process by MC( monitor Center).The paper first puts forward the architecture of the whole system,then defines the structure of MC and its interoperation mode.  相似文献   
33.
In this paper,the existence,uniqueness,and asymptotic behavior of the solution of the density evolution equation for M/M/∞ model was studied by the semigroup theory of linear operators.  相似文献   
34.
A simple method for calculating the 3D coordinates of points on a moro object in a multi-camera system is proposed.It simplifies the algorithms used in traditional computer vision system by eliminating the calculation of the CCD( charge coupled device) camera parameters and the relative position between cameras,and using solid geometry in the calculation procedres instead of the calculation of the complex matrixes,The algorithm was used in the research of generating a virtual magnified 3D image of a micro object to be operated in a micro operation system,and the satisfactory results were obtained.The application in a virtual tele-operation system for a dexterous mechanical gripper is under test.  相似文献   
35.
A study on the sorption of monocrotophos and parathion-methyl on Yellow River‘s sediments was performed.The influence of some factors,such as pH value and ionic strength,on the sorption was investigated and first order kinetics mode for the sorption of monocrophos was shown.Freundlich isotherm was suggested as the most appropriate type for monocrophos an parathion-methyl.But the sorption isotherms of monocrotophos and parathion-methyl are also in conformity with Langmuir equation.Both partition and adsorption occur to the sorption of monocrophos to Yellow River‘s sediments.but partition is the predominant for that of parathionmethyl.  相似文献   
36.
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中国进出口商品质量认证中心(htp://www.cqc-china.com)该网站是中国进出口商品质量认证中心建立的。它可提供进出口商品许可制度与许可程序、质量体系认证与认证流程,并可查询进口商品安全质量许可证数据库、质量体系认证数据库和认证产品目录...  相似文献   
37.
Environmental PressuresThe consequences flowing from the changing world economy,and the associated decline of faithin the welfare state,are so well known that will only briefly review them here.Western nations foundthemselves increasingly unable to compet…  相似文献   
38.
One-dimensional traffic model was studied with the consideration of stochastic deceleration by using the lattice Boltzmannmethod.The evolution equation for vehicle density was derived,which has the form of the Burgers equation exhibiting the effect of viscosity corresponding to the deceleration.The simulation with the model shows that the variation of vehicle density in space tends to a periodic one,which implies the existence of kinematic waves in the 1D traffic flow and coincides with theoretical prediction.  相似文献   
39.
In this letter,we briefly describe a program of self-adapting hidden Markov model(SA-HMM) and its application in multiple sequences alignment.Program consistes of two stage optimisation algorithm.  相似文献   
40.
Traffic assignment models are one of the basic tools for the analysis and design of transportation systems.However,the existing models have some defects.Considering the characteristics of Chinese urban mixed traffic and the randomness of transportation information,the author develops a combinatorial model involving stochastic choices of destination.mode and route,Its uniqueness and equivalance are also proved by the optimization theory.  相似文献   
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