We present a modified Deffuant-Weisbuch opinion dynamics model that integrates the influence of media campaigns on opinion. Media campaigns promote messages intended to inform and influence the opinions of the targeted audiences through factual and emotional appeals. Media campaigns take many...

Combining the neo-classical model of imperfect competition approximating to the markets in which the three firms competed with the resource-oriented and agency concepts of Edith Penrose, this essay describes, analyses and compares the evolution of the product development policies of three...