Abstract: here are now several observations of internal solitary waves passing through a critical point where the coefficient of the quadratic nonlinear term in the variable coefficient Korteweg?de Vries equation changes sign, ...

Abstract: Rutting is one of the major distresses of the expressway pavements in China. At present, rut depth is the only evaluation index for rutting at home and abroad. It can’t show the whole information of rut. A rut-meter is ...