In the last four years, daily deals have emerged from nowhere to become a multi-billion dollar industry world-wide. Daily deal sites such as Groupon and Livingsocial offer products and services at deep discounts to consumers via email and social networks. As the industry matures, there are many questions regarding the impact of daily deals on the marketplace. Important questions in this regard ...

A new, formal, role-based, framework for modeling and analyzing both real world and artificial organizations is introduced. It exploits static and dynamic properties of the organizational model and includes the (frequently ignored) environment. The transition is described from a generic framework of an organization to its deployed model and to the actual agent allocation. For verification and v...

Mass media carry political information to the voter. This makes voters using mass media more likely to respond to campaign promises and to hold politicians accountable for cuts that hurt them. As a consequence, politicians should target voters using mass media. These ideas are developed in a voting model which is then used as a basis for empirical investigation. To isolate the e¤ects of mass me...