Spectrum analyses of water quality time series have been carried out for five hydrometric stations including Wuhan hydrometric station of the Changjiang (Yangtz
This paper discusses the problem of estimating the time delays of multipath signals in wireless communications. The new multipath channel model is presented. An
In this paper, we displayed one-dimensional climate signals, such as global temperature variation, Southern Oscillation Index and variation of external forcing
This paper generalizes the makeup and forming dynamic mechanism of natural disaster systems, principles and methods of comprehensive division of natural disaste