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This article presents a method to describe system requirements with B abstract machine, and transformation rules from B method to the Architecture Analysis and Design Language (AADL) model. We aim at solving the problems of requirements non-deterministic and ensuring requirements consistency during conversion procedure, AADL architecture model is consistent with requirements. Furthermore, in the early...
For real-time environmental monitoring of air quality to design the system, use the virtual instrument test software LabVIEW to achieve real-time monitoring of pollutant gases, With database access toolkit to access Access database for LabSQL, display the Real time monitoring data and trends, Environmental monitoring personnel Customized monitoring time and data storage time based on actual conditions,...
Steganographic technique is a means of covert communication and needs to satisfy two basic requirements--good security and high hiding capacity. The capacity of different hiding algorithms may be compared directly, but there are few methods suitable for analyzing their security. In this paper, the DC and AC DCT coefficients of an image are fitted with Gaussian density and generalized Gaussian density...
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