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Urban transportation projects are massive public investments that can transform cities. This article reviews how they shape where people live and how they affect the rich and poor differently. …
We introduce a collective experimentation problem where a continuum of agents choose the timing of irreversible actions under uncertainty and where public feedback from the actions arrives gradually …
We conduct a welfare analysis of R&D subsidies and tax credits using a model of innovation policy incorporating externalities, limited R&D participation and financial market imperfections. We …