PurposeThe purpose of this study is to analyse factors influencing subscribers' usage of 3G mobile services in Taiwan.Design/methodology/approachThe research model, based on a technology acceptance model (TAM) and added perceived enjoyment, was tested by means of a two‐stage structure equation modelling approach. Data were collected from 532 respondents via a web questionnaire survey.FindingsThe findings indicate that perceived usefulness, perceived ease of use and perceived enjoyment are positively related to attitude, and perceived enjoyment has a positive influence on perceived usefulness.Practical implicationsThe findings suggest users of 3G mobile services need to be provided with more diverse and entertaining ways of communicating, which are at the same time easily accessible and convenient to use.Originality/valueA new correlation from perceived enjoyment to perceived usefulness was found to have a significant effect. This finding indicates enjoyment as a key factor influences customers' adoption of 3G services.

Introduction of Ag(i) ions into a sulfonic acid functionalized MOF ((Cr)-MIL-101-SO3H) significantly enhances its interactions with olefin double bonds, leading to its much higher selectivities for the separation of C2H4-C2H6 and C3H6-C3H8 at room temperature over the original (Cr)-MIL-101-SO3H and other adsorbents at room temperature.

This study showed that cigarette combustion will produce high concentration of ROS, and this high concentration of ROS in mainstream cigarette smoke probably is one major factor contributing to a high incidence of lung cancer in smokers. Environmental tobacco smoke (ETS) or second-hand smoke is a major indoor air pollutant that could potentially harm non-smokers. We will try to determine the ROS in ETS in the future.