To understand the impact of Information Systems (ISs) on actual performance, we employed 616 Korean firms to estimate the complementarities among such systems and to uncover the contextual factors influencing them. In particular, we introduced various contextual variables and analysed their...

The paper suggests a different model for estimating a discrete/continuous choice framework using Gibbs sampling. The basic idea of using Gibbs sampling for the multinomial probit model is extended to the case of a discrete/continuous framework. To check the applicability of this method, it was...

E-mail is an efficient communication tool, but at the same time it is an efficient vehicle for Internet pollution in the form of spam—unsolicited, bulk e-mailings. Spam is a global phenomenon, and debate about possible means of controlling it is lively. Spammers impose a negative externality...