In this paper, the design and implementation of an access control model for Linux system are discussed in detail. The design is based on the RBAC model and comb
Based on observation data of temperature from automatic meteorological stations in all towns and the national weather station in Guilin City,annual and monthly
[Objective] The study aims to discuss the effects of metal ions on the activity of Pleurotus ostreatus and Pleurotus eryngii cellulose.[Method]0.5 mmol/L Fe SO4
Based on the fast algorithm of meteorological satellite guide wind vector tracing,cloud motion wind vector is calculated. According to the different characteris