one of the thinkers¨ demands for governments is to take due care of the social rights of citizens thus far. no doubt, imam `ali (a.s.), as a muslim ruler, concentrated on maintaining man¨s rights both in theory and in practice. this article refers to the relationship between the right and the duty from imam ali¨s viewpoint, studies the foundations of man¨s rights and duties and discusses imam a...

Price rigidity is the key mechanism for propagating business cycles in traditional Keynesian theory. Yet the New Keynesian literature has failed to show that sticky prices by themselves can e¤ectively propagate business cycles in general equilibrium. We show that price rigidity in fact can (by itself) give rise to a strong propagation mechanism of the business cycle in standard New Keynesian mo...