INTERNATIONAL JOURNAL OF MODERN PHYSICS C, cilt.18, sa.5, ss.849-859, 2007 (SCI-Expanded)
A model on the effects of leader, media, viruses, worms, and other agents on the opinion of individuals is developed and utilized to simulate the formation of consensus in society and price in market via excess between supply and demand. The effects of some time varying drives (harmonic and hyperbolic) are also investigated.