In order to improve the scientific and comprehensive nature of the index evaluation system, this paper takes the Chinese residents' consumption structure as an example, and uses the index weighting method combined with the entropy weight method and the correlation analysis, that is, the comprehensive entropy weight method to determine the weight value of each index of the Chinese residents' consumption structure. By calculating the method of comprehensive weight, it overcomes the shortcomings of using a single weighting method, makes the calculation of weight more scientific and reasonable, and through case analysis, the evaluation result obtained by this method is more objective and reasonable, practical and feasible.

Reversible binding of cell targeting motifs on biomaterial surfaces can be used to mimic the dynamic bioactivities of the extracellular matrix (ECM), thus showing potentials to modulate cell behaviours in...

No abstract

Ruin probability is an important scale of measurement for insurance company, for it can know own compensation ability well ,so it is important to research ruin probability's advancing expansion for its stable manage. In this paper, we consider the classical risk model, assuming that the tail of claim-size is second-order regular variation. First we prove the closeness of second-order regular variation, we obtain advancing gradually expansion of _____ ( ) n I F x * , then usingBeekman's convolution formula, finally get the advancing gradually expansion of ruin probability.