In recent years, Smartphone users are increasing rapidly. Moreover, Smartphone users' age occupies from young to old. In the past, studies focus on Smartphone users generally targets the office workers rather than younger users. Yet, previous studies do not talk about the income and life-value...

Lotto was inaugurated in January 2002, and immediately became a popular activity in Taiwan; as the big craze following its initial introduction has subsided, the growth of Lotto game sales has slowed. To maintain lottery sales' momentum, operators have conducted numerous jackpot promotions; this...