In order to study the dynamic changes in gas concentration, to reduce gas hazards, and to protect and improve mining safety, a new method is proposed to predict gas concentration. The method is based on the opposite degree algorithm. Priori and posteriori values, opposite degree computation,...

In order to study the dynamic changes in gas concentration, to reduce gas hazards, and to protect and improve mining safety, a new method is proposed to predict gas concentration. The method is based on the opposite degree algorithm. Priori and posteriori values, opposite degree computation,...

Since the 2008 Financial Crisis, stress tests based on extreme-yet-plausible scenarios have become a preferred method of assessing risk for large financial institutions, yet scenario choice has largely been ad-hoc. We propose a principled methodology to choose scenarios by minimizing the...

Polycyclic aromatic hydrocarbons (PAHs) and their nitrated derivatives (NPAHs) attract continuous attention due to their outstanding carcinogenicity and mutagenicity. To investigate the seasonal and diurnal variations, sources, formation mechanism and health risk assessment of PAHs and NPAHs,...