Background: Multiple imputation (MI) provides an effective approach to handle missing covariate data within prognostic modelling studies, as it can properly account for the missing data uncertainty. The multiply imputed datasets are each analysed using standard prognostic modelling techniques to...

Proton exchange membrane (PEM) water electrolysis systems offers several advantages over traditional technologies including greater energy efficiency, higher production rates, and more compact design. Normally in these systems, the anode has the largest overpotential at typical operating current...

Alfred Marshall, Principles of Economics (1890) – Founder of Modern (Neo-classical) Economics. His book Principles of Economics was the dominant textbook in economics for a long time and it is considered to be his seminal work.