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Based on full investigation and further research of DSM, this paper established comprehensive evaluation index system, adopting fuzzy mathematics and Grey Theory. It established evaluation matrix of ray fuzzy in grey statistics, defining the weight of evaluation index according to grey correlation analysis. Evaluating the effect of DSM according to maximum membership degree principle, furthermore,...
On the basis of three-dimensional finite element modeling method, a cutting model is built in accordant with the real working environment. In the simulation, some results including the temperature distribution, cutting force variable and stress field were obtained. The simulation result can help to improve and optimize the parameters of the real turning process, to reduce costly and time consuming...
Considering the impact of the objective environment on the economic system, this article introduces gray elements to a dynamic input-output model which is based on variable structure control, and proposes the methods of determining the important parameters of the model. This model can reveal the relationship between propensity to consume, propensity to invest, the structure of consumption and investment,...
Evaluating road safety is essential in identifying the potential road safety hazard which could result in casualties and property losses. in this paper, a BP neural network was built by using neural network toolkit in "Matlab", Two similar roadways are used in calibrating and validating the network. The high level of predictability provided that the application of BP neural network model...
This paper describes the research and implementation of parameters system for small or medium-sized four-column hydraulic press design, which the whole process is valuable and practical. Firstly, the status quo of hydraulic design is analyzed. Secondly, based on the analysis of the design process about the upper beam in four-column hydraulic, the design process of various components are illustrated...
Taking the fuzzy and grey features of transformer substation construction project into account, this paper classified the evaluation system of transformer substation construction project into 4 indexes of grade A and 13 indexes of grade B. The weight of each index is decided reasonably by the Analytic Hierarchy Process (AHP).The grey number and the grey evaluating weight of each index are obtained...
Basing on the idea of intrusion masking and defense-in-depth, a generic architecture of survivable storage system is presented. The architecture includes 3 subsystems: storage strategy, user management and security module. Through analyzing the overall survivability of storage systems, and importing survivable requirement into the design phase of storage systems, security and other attributes is easily...
The concept semantic similarity computation has vast application in the question answering system field, semantic similarity is becoming the basis of semantic expansion in the question answering system, and influences the recall rate and precision rate of the question answering system immensely. After we analyze the traditional method of semantic similarity computation, we consider comprehensively...
An object pool model based on RMS is proposed. Aimed to solve the Memory peak problem in J2ME, on the basis of object pool design pattern, an object pool model used RMS is designed and implemented. According to the test result, the performance of program can be increased and the memory overhead can be reduced by using the model.
Signals output from the gyros usually contain turbulent noise, which comes down the signal accuracy and lowers the systemspsila function. So denoising is necessary. an algorithm, based on three-layer wavelet packet transform of semisoft threshold, was applied to process the gyropsilas state signal. The decomposition coefficient of each node was got from the decomposition of third-layer wavelet packet...
The paper presents an application of a new SAPWM (saddle pulse width modulation) rectifier for the driver of electric actuator to transform 115 V/400Hz AC power to 280 V DC power. In this paper, a comparison between SPWM rectifier and SAPWM rectifier is made by simulation, it proves that the SAPWM rectifier is superior for its higher output power. It also proves that the SAPWM rectify technology can...
In order to eliminate noise and singularities from dynamical test data, this paper employs spatial correlation of wavelet coefficients to remove noise by the feature, which noise-decomposed coefficients using wavelet transform are not correlative at the different finest scales, and uses the characteristic of the singularities through decomposing wavelet to eliminate these singularities, that is denoising...
Fiber attachment soldering is low cost and high-precision technology in direct-coupling optoelectronic packaging. The three-dimensional shape of solder joint in fiber attachment soldering was predicted by using the public domain software called Surface Evolver. The influences of material and manufacturing parameters on solder joint geometry and the stand-off height were investigated. The results can...
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