We introduce a new comprehensive announcement-level database tracking the extraordinary fiscal, monetary, prudential, and other policies that countries adopted in response to Covid-19. The database provides detailed information, including sizes where available, for 28 granular policies adopted...

This book is a collection of original works by authors from all over the world on aspects of unemployment and job issues, seen from various angles and based on their recent research. It sheds light on fresh ideas on unemployment, such as the intergenerational approach and unemployment...

In this paper, an energy level analysis model of oil transfer station system is established, which is divided into oil transfer station subsystem and pipeline network subsystem. From the perspective of the level of energy, the system is evaluated and optimized by virtue of using energy level...