The French Forest Sector Model (FFSM) combines a spatial price equilibrium model à la Samuelson and an imperfect substitution assumption à la Armington for wood products between France and the Rest of the World. This paper aims at proving the existence and the conditions of equilibrium in...

Social conformity can spread social norms and behaviors through a society. This research examines such a process geographically and over time for voting, which is strongly influenced by the norm that citizens should vote. A mathematical model for the spread of voting participation under the...

This short paper considers a number of temporal and spatial models that can be used for international comparison of internal migration levels across all countries of the world. First, among the various spatial models used, the model linking migrations to the zoning of the territory provides a...