Using plausibly exogenous variations in the ethnicity-specific assigned birth quotas and different fertility penalties across Chinese provinces over time, we provide new evidence for the transferable utility model by showing how China's One-Child Policy induced a significantly higher unmarried...

Operation optimization is a critical issue in the management of the multi-source large-scale urban centralized heating system (UCHS). A major challenge is to deal with the complex topological structure of its heating network. We investigate the operation enhancement of UCHS from the view of...