Abstract:In the actual analysis of grey clustering evaluation, the length of a grey clustering interval was partially longer, which is determined by the grey clustering evaluation method based on the center-point triangular whitenization weight function. In response to problems like this, this paper proposes a new grey evaluation method on the basis of the reformative triangular whitenization weight function. Motivated by ideas of the end-point and the center-point triangular whitenization weight functions, we construct a new compact-center-point triangular whitenization weight function. Then, several aspects of the three kinds of triangular whitenization weight functions are compared, such as the crossing properties of grey cluster, clustering coefficients, rules for grey clustering interval, rules for choosing end-points and clustering performance. In the following, this paper proposes an example about the evaluation of a basin initial water rights allocation scheme, which analyzes the three methods to further verify that the new grey clustering evaluation method is feasible and effective. The results indicate that the compact-center-point triangular whitenization weight function precedes the end-point triangular whitenization weight function and the center-point triangular whitenization weight function soundly.
Characteristics of field failure data are analyzed in this paper. The failure data and sales
record of LZL-type mass flowmeter are used to infer life distribution of this conduct. The lines can be
fitted in coordinates of six distribution using least square and the residual sum of squares are
compared, the minimum correspond is the best distribution type. The results show that the life
distribution style of this conduct is the two parameter exponential distribution, which is the base to
analyze and predict failure development, research failure mechanism and draw up maintenance
policy.
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