Low cost, high performance and environmentally friendly lubricants are needed for modern industrial development. Here, the high-yield carbon dots (CDs) were rapidly prepared by the aldol condensation reaction. The size of the CDs was less than 10 nm, with discrete and quasi-spherical morphology....

In timing property listings, real estate developers can exercise the “option to wait” or “option to presale” to mitigate price uncertainty risk. In this study, we proposed a theoretical model to study the effectiveness of both strategies under a unified framework. We tested our model...

Urban land reform in China aims to build an efficient land market. However, it has led to a dual land supply system that consists of both market-based leasing and administrative allocation. In recent years, the control by local municipal government over land supply has strengthened...