This paper explores the dynamics between the returns process of an index exchange traded fund (ETF) in a market subject to price movement or price limit constraints. Using the SSE 50ETF, which is comprised of the 50 largest companies by market capitalization listed on the Shanghai Stock Exchange...

The corrosion problem of liquid lead-bismuth eutectic alloy (LBE) on structural materials is one of the key material technologies that restrict the development of LBE cooling reactors. In this paper, two different Cr-Al coatings were synthesized by electroplating and multi-arc ion plating (MAIP)...

Ultrasound-triggered sonodynamic therapy has shown great promising for the treatment of tumors, however, only few clinical reports describe the use of sonodynamic therapy, which results from that the traditional sonosensitizers tend to suffer from very poor efficiency combined with low retention...

Social distancing is vital to mitigate the spread of the novel coronavirus. We use geolocation data to document that political beliefs present a significant limitation to the effectiveness of state-level social distancing orders. Residents in Republican counties are less likely to completely...

We examine the cross-section of skill among non-professional analysts (NPAs) on Seeking Alpha, a prominent crowd-sourced investment research platform. We estimate that 60% of NPAs are skilled, and we document substantial dispersion in skill. Even after accounting for bid-ask spreads and allowing...