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To overcomes the disadvantages of computing the attributes' weight method in multi-attribute decision problem. In this paper, a weighted averaging method based on Dempster-shafer evidential theory and grey fixed weight cluster has been used. Firstly, by using the Dempster-shafer evidential theory can integrate the subjective and objective weights to get the weight coefficients, and then avoid the...
Interference pattern of acoustic field can be used to estimate target parameters. Target parameters, such as depth, distance and velocity, etc. can be estimated by extracting the period of interference frequency for interference spectrum or the parameters of interference curve. It indicates that there exists the farthest interference distance when there is only sea surface reflection.
Urban road runoff caused by 36 storm events were collected using self-made volume proportional collecting device at south second ring road in Xi'an, China from Mar. 2009 to Feb. 2010. Event mean concentrations (EMC) of SS, NH3-N, total and dissolved COD, Pb and Zn were tested. Pollution intensity, as well as occurrence, correlation and seasonal variation of runoff pollutants were explored. Results...
Urban road runoff caused by 29 storm events were collected at South Second Ring Road in Xi'an city using self-made volume proportional collecting device from Mar. to Sep 2009. Event mean concentration (EMC) of SS, total and dissolved Pb, Zn were tested. Pollution intensity, as well as mode of occurrence, relationship and concentration influence factors of heavy metal in runoff were explored. Results...
This paper aims to use the theory of service quality evaluation and the method of mathematical statistics, initially establishes a medical service evaluation index system based on the archival research, experts consultation and patients communication. According to the prepared index system, the authors use questionnaire survey method to explore the major considered factors when patients evaluate the...
As electronic commerce develops, its success critically depends on establishing, maintaining and managing customer trust in e-commerce Web sites. This paper identifies critical success factors that enhance customer trust in e-commerce Web sites and examines those factors in relation to the e-commerce success metrics using qualitative and quantitative methods. The result suggests that certain functional,...
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