You can study the adoption the low-GHG manufacturing processes in the cememt production industries of a given country and see the proportion of firms that adopt them, vs. not adopting. Or you could do a between-country analysis, say Kyoto Signatories, where you could explore the relative weight of regulations/incentives in driving country-level adoption rates (means) in the cement industry.
PS: this research is from a management or economics standpoint, there are other topics, in engineering and applied sciences, of course.