Pseudo-random code is the basis of spread spectrum communication, at the same time, coherent receiver the spread spectrum signal by make use of the favorable correlation and reproducibility features of pseudo-random c...
详细信息
This paper based on the flow field numerical simulation method to analyze the valves used for space instrumentation , the flow field of high-pressure unloading valve was numerical simulation upon different structural ...
详细信息
It is widely agreed that strapdown TV seeker simulation has very important significance to the development and evaluation of guided weapon systems which has strapdown TV seeker. The paper emphasizes on the research of...
详细信息
In this paper, an unconditionally stable implicit difference scheme based on quartic spline interpolations in space direction and finite difference discretization in time direction for the numerical solution of two-di...
详细信息
A new compaction powder metallurgy equipment integrated with the mould and the frame is introduced to substitute the traditional powder metallurgy equipment (P/M). During the design and manufacture, finite element met...
详细信息
A novel chaotic image encryption algorithm is proposed to overcome some drawbacks in the existed methods. The algorithm creates a relation between the plain image and the generated pesuedo-random numbers, which are co...
详细信息
In the paper we present the importance of the general semantic concepts & action for semantic searching. The amount of knowledge is increasing endlessly. And the existing Web pages where knowledge is conveniently ...
详细信息
This paper proposes a new user similarity measure to improve the collaborative filtering algorithm. We apply a basic fractional function and an exponential function to calculate the similarity between users by taking ...
详细信息
Passive suspension hydraulic shock absorber of a certain minicar is being improved design. Step motor added to adjust settable orifice in valve core bar of shock absorber. For validate feasibility of improved control,...
详细信息
The process of gas dispersion is very complex, especially the gas of well blowout. Safety design and scale-up of these systems requires a through understanding of gas diffusion patterns and affected area. This paper p...
详细信息
暂无评论