We introduce a model of product development in a firm. Our model describes the process as a multi-stage contest (i.e., race) with an endogenous length (with one stage or two stages) between two workers. We model the payments to workers from the new product using the normatively appealing Nash...

The Circular Economy concept has emerged to face current unsustainable economic trends. Circularity requires to go beyond mainstream linear business models in favour of new design strategies and production processes able to support an efficient use and a continuous flow of resources. Clarifying...