If you look today at the skyline of downtowns throughout the Middle East and beyond, the joint-stock corporation has transformed the urban landscape. The corporation makes itself present through the proliferation of its urban mega-projects, including skyscrapers, downtown developments and gated...

We develop a model where the unemployed workers in the city can find a job either directly or through weak or strong ties. We show that, in denser areas, individuals choose to interact with more people and meet more random encounters (weak ties) than in sparsely populated areas. We also...

A new urban revolution begun in the second half of the XX century and it is going to challenge the relation between the size and economic role of cities: on one side, the last decades have witnessed the emergence and the never seen growth of a number of Mega-cities, with more than 9 million...