2Heinrich H W, Petersen D, Roos N. Industrial Acci- dent Prevention [ M ]. New York : McGraw-Hill, 1950.
3Lingard H, Rowlinson S M. Occupational Health and Safety in Construction Project Management [ M ]. Lon- don :Taylor & Francis,2005.
4Wallen E S, Mulloy K B. Computer-based training for safety: comparing methods with older and younger workers [ J ]. Journal of Safety Research,2006,37 ( 5 ) : 461-467.
5Balabanovi M, Shoham Y. Fab : content-based, collab- orative recommendation [ J ]. Communications of the ACM, 1997,40 ( 3 ) : 66 -72.
6Musto C, Semeraro G, Lops P, et al. E-Commerce and Web Technologies [ M ]. Berlin : Springer Berlin Hei- delberg,2011.
