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In order to meet the trend of miniaturization, large capacity and intelligence of the current vacuum circuit breaker, a new model of three-phase disc rotation vacuum circuit breaker has been proposed, in which the main circuit distribution was changed from the same direction to the opposite. Besides, some adjustments were made to the position of operating mechanism. The electric field distribution...
Due to the demands of the market, high density and low profile packaging options of small packaging are continuously developed. As high density packaging technologies such as Molded Underfill (MUF) on flip chip package are usually used due to its simplification of assembly process steps and the saving of the cost. For MUF process, in order to ensure void free package, it is often constructed a vacuum...
This paper presents a classify model of learning behavior on an intelligent tutoring website which provides a describing method of learning behavior. MFR Model creates a conceptual model and a analysis model according to students' learning behavior on the website. By using MFR model, influences of participation and learning effects can be judged by learning behavior which can not only strengthen the...
A customer churn analytical model based Bayesian network is built for prediction of customer churn. We propose Bayesian Network approaches to predict churn motivation, mining the result in churn characters in order to help decision-making manager formulate corresponding detainment strategy. Experimental results show that classification performance of both methods is resultful.
Terminal Sensitive Projectile is a sensitive type of Picture ammunition, which use the advanced sensor technology and EFP technology together. The text is introducing the Monte Carlo Method to analyses and simulation the characteristic of Terminal Sensitive Projectile's damage rate, using of picture and simulation picture of the result to explain the influence factor of Terminal Sensitive Projectile's...
In order to analyze low gravity influence to the tractive performance of lunar rover effectively, similitude methodology was introduced to investigate the lunar wheel-soil interaction. The key parameters of the system between lunar soil and rover wheel were selected at first, the terramechanical model of the system under lunar gravity was created according to similarity theorem, then the feasibility...
With the rapid development of information technology, the computer and Internet had been thoroughly applied in every area of society, particularly in the public administrative management areas, which maximally changed the government operation model and management method and improved the operational efficiency and management quality. Informationalization of the public administrative management has...
The severe restriction of topographic factors, etc. the layout of the valley-city development along with the topography, so that the site selection of passenger station in the valley-city is different from that of the plain-city. The principles of the layout and site selection of passenger station is described in this paper, the ANP method is introduced into the site selection of passenger station...
Calculations based on a rigorous analytical model are carried out to optimize the width of the indium phosphide avalanche region in high-speed direct-detection avalanche photodiode-based optical receivers. The model includes the effects of intersymbol interference (ISI), tunneling current, avalanche noise, and its correlation with the stochastic avalanche duration, as well as dead space. A minimum...
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