This paper examines the relationship between environmental policy and “green” innovation in shipbuilding. The primary … motivating question of this work is whether there is evidence of: i) technology push from innovation that enables environmental … policy initiatives; and/or, ii) policy pull that induces innovation leading to “green” ships. This paper focuses on four …

documents and their evolution in time, which can be modelled as a diffusion process. By focusing on the combinatorial dimension … of the process we obtain insights that complement those from counting patents. Our results show that the density of the … can then be used to estimate the time to maturity defined as the year at which the diffusion process for a specific …