Total volatile basic nitrogen (TVB-N) level rapid evaluation on chicken meat based on gas sensor array (GSA) technique was studied in this paper. GSA responses to chicken meat stored at 4°C were examined for 5 days. TVB-N content was synchronously measured by chemical examination. Principal component analysis (PCA) and non-linear double-layered cascaded serial stochastic resonance (DCSSR) were utilized for measurement data analysis. TVB-N examination results suggested that chicken meat stored for more than 3 days was not fresh. PCA showed poor discrimination abilities, while DCSSR signal-to-noise ratio (SNR) quantitatively characterized the freshness of all samples. Chicken meat TVB-N forecasting model was developed by non-linear fitting between SNR eigenvalues and TVB-N values. The predicting model was constructed. Validation experiment results demonstrated that the forecasting accuracy of the developed model reached 93.3%.

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Aiming at the problem of complexity and uncertainty factors existing in network security risk assessment process, an analysis method based on Fuzzy Analytic Hierarchy Process is proposed in this paper. By the theory of fuzzy mathematic, this method establishes the network risk assessment model and constructs fuzzy judgment matrix to determine index weight of each level factor. The example of calculation results shows that the method is feasible and effective.

. In view of the application problems of integrated C/S framework in the existing single sign-on system, a safe, efficient and scalable enterprise integration logging-on system scheme which can integrate the structure characteristics of B/S and C/S is proposed in this paper, this scheme can focus on publishing application systems, management login and applying operation, and it has been carried on application verification by enterprise users in practice.