Urban last-mile delivery providers are facing more and more challenges with the explosive development of e-commerce. The advancement of smart mobile and communication technology in recent years has stimulated the development of a new business model of city logistics, referred to as crowdsourced...

Particle-phase polycyclic aromatic hydrocarbon (PAHs) accounts for a large proportion of hazardous compounds in PM2.5 derived from vehicle emission. This study aimed at determining the profiles of PAHs based on tunnel measurement and urban roadside observation. The real-world vehicle emission...

The synthesis of different structures quantum dots (QDs) in a biologically friendly aqueous solution is the current trend for the preparation of nanoparticles. CdTe QDs were synthesized in aqueous by a green and environmentally friendly way with glutathione (GSH). Rod like core-shell CdTe/CdSe...

The material and microstructure of the carrier-selective layers in the perovskite solar cells are important to determining their efficiency and stability. Planar tin dioxide (p-SnO 2 ) is the most commonly used inorganic electron transport layer, but there are few reports on its mesoporous...

Suppliers usually worry about losing important customers far away. This study examines the effect of long-distance customers on the supplier's cash holdings in China. We find that firms with long-distance major customers tend to hold more cash holdings. Our results still hold when considering...

We find public directional order imbalance of in-the-money options on S&P500 (“DOI”) negatively predicts market returns over a monthly horizon, up until three months, after controlling for established sentiment measures and market return predictors. Stocks in the High-tech industry are the...

Offensive humor, underpinned by jokes that stir emotional responses and instigate conflicts, represents a burgeoning research domain within pragmatics and digital communication. This study delineates an innovative exploration of offensive joking within Chinese social milieus, presenting insights...

Tailings ponds are the final storage site for tailings associated with mine extraction and metal smelting. Even though they play an important supporting role in mineral excavation and utilization and related industrial development, they are also considered to be a major source of environmental...

This paper tries to analyze two questions in economic history. The first is why the Asian countries failed to achieve the industrial revolution, but Western Europe did. The second one is to analyze the role of public education in the economic transition. I also apply the model to explain why the...