Introduction -- Brief History and Basic Concepts of Infrastructure -- Origin and Development of Infrastructure Economics -- A Review of Infrastructure Economic Growth Models.-Achievements and Challenges of China’s Infrastructure Development (1949-2019) -- Infrastructure and Market Integration:...

We consider simple methods to improve the growth nowcasts and forecasts obtained by mixed frequency MIDAS and UMIDAS models with a variety of indicators during the Covid-19 crisis and recovery period, such as combining forecasts across various specifications for the same model and/or across...