1Cruise Lines International Association Inc. The state of the cruise industry in 2014: global growth in passenger numbers and product offerings[EB/OL]. (2014-1-16) [ 2014-9-1 ], http ://www.cruising.org/vacation/news/ pressre|eases / 2014/01/state-cruise-industry-2014- global-growth-passenger-numbers-and-product-o.
2PEAKED E, GRAY C L, LUDWIG M R, et al. De- scriptive epidemiology of injury and illness among cruise ship passengers [J ]. Annals of Emergency Medi- cine, 1999, 33(1): 67-72.
3NICAS M, NAZAROFF W W, HUBBARD A. Toward understanding the risk of secondary airborne infection: emission of respirable pathogens [J]. Journal of Occu- pational and Environmental Hygiene. 2005, 2 (3) : 143-154.
4HE Q B, NIU J L, GAO N P, et al. CFD study of exhaled droplet transmission between occupants under different ventilation strategies in a typical office room [J]. Build- ing and Environment, 2011, 46(2): 397-408.
5GUPTA J K, LIN C H, CHEN Q Y. Transport of expi- ratory droplets in an aircraft cabin [J]. Indoor Air, 2011, 21(1): 3-11.
6ZHU S W, SREBRIC J, SPENGLER J D, et al. An ad- vanced numerical model for the assessment of airborne transmission of influenza in bus mieroenvironments [ J ]. Building and Environment, 2011, 47 : 67-75.
7ZHANG L, LI Y G. Dispersion of coughed droplets in a fully-occupied high-speed rail cabin [J]. Building and Environment, 2012, 47: 58-66.
8ZHAO B, CHEN C, TAN Z C. Modeling of uhrafine particle dispersion in indoor environments with an im- proved drift flux model [J]. Journal of Aerosol Sci- ence, 2009, 40( 1 ) : 29-43.
9CHEN Q. Comparison of different k-e models for in- door air flow computations [J]. Numerical Heat Trans- fer, Part B: Fundamentals: An International Journal of Computation and Methodology, 1995, 28 (3) : 353-369.
10YUAN X, CHEN Q, GL1CKSMAN L R, et al. Mea- surements and computations of room airflow with dis- placement ventilation [J]. ASHRAE Transactions, 1999, 105( 1 ) : 340-352.