Mingai Li, received her B.Sc. degree and M.Sc. degree from Daqing Petroleum Institute, Heilongjiang, China, in 1987 and 1990 respectively, and Ph.D. degree from Beijing University of Technology, ...

Nowadays, smartphones replace the (video) camera on holiday, acts as a portable music player, has space for all WhatsApp media, and holds audio plays, e-books, and documents. To avoid losing such data ...