Weiwei Wang*,Xiao Liang,Mingzhu Zhang
College of Information and Control Engineering,China University of Petroleum,Qingdao 266580,China
The publisher regrets the title of the mentioned paper had a spelling mistake in the originally published article.The spelling of the word“Measurement”in the title was misprinted as “Measurment”.
The publisher would like to apologise for any inconvenience caused.