In tension and compression of polymers, some abnormal phenomena of volume changes were often observed and its mechanism is still unclear. In this paper, based on the thermodynamics principle, it is shown that the combined effects of internal energy and entropy are the basic reason of causing the...

Economic Impact of COVID-19 Pandemic / Cai Fang -- Its Impact on "Agriculture, Rural areas and Farmers" and Countermeasures / Li Xuesong, Wang Hongju, Feng Ming, Li Shuangshuang and Zhang Binbin -- The Impact of the COVID-19 Pandemic on China's Industrial Economy and Countermeasures / Wei...

The San Franciscan Origins -- The World’s First Sharing City -- The Story of the Sharing Cities Alliance -- The transformation of Milan -- Sharing Towns - Building success with the sharing economy outside big cities -- Sharing cities in Australia -- The status of the sharing economy in Japan...

We establish that stock liquidity is conducive to less corporate diversification. Two potential channels are identified: the financial constraint channel and the corporate governance channel. Specifically, we find that the negative effect of liquidity on diversification is stronger among...