OBJECTIVE To determine whether there is evidence that mass-media campaigns can be effective in reducing illicit drug consumption and the intent to consume. DESIGN Systematic review of randomised and non-randomised studies. METHODS We searched four electronic databases (MEDLINE, EMBASE, ProQuest Dissertations & Theses A&I and CENTRAL) and further explored seven additional resources to obtain...

Mass media digitization is an unfolding phenomenon, posing novel societal opportunities and challenges that researchers are beginning to note. We build on and extend MIS research on process digitization and digital versus traditional communication media to study how and to what extent social media—one form of digital mass media—are emancipatory (i.e., permitting wide-spread participation in pub...

Cosmic ray experiments outside the Earth’s atmosphere are subject to severe restrictions on the mass of the instruments. Therefore, it is important that the experimental information that can be obtained per unit detector mass is maximized. In this paper, tests are described of a thin (1.4 λint deep) hadron calorimeter that was designed with this goal in mind. This detector was equipped with two...

Instant Messaging (IM) has become one of the most popular applications for many Internet users. While prior research has primarily focused on IM initial adoption, continued usage (or continuance) has not drawn much attention. This research integrates media choice theories with motivation theory to explain IM continuance. It tests the proposed model using data collected from a sample of 207 Chin...

In Internet-based social networks, the nodes have the most pivotal role in the processes and outcomes of the networks. Whether they pay attention to a message in the network or ignore it defines the fate of the message. One message is shared and re-shared by millions of users and another is left forgotten. The current study tries to shed light on one aspect of the role of the users in a social ...