As natural gas becomes increasingly important in our daily life, studies have been carried out on trace elements such as mercury and arsenic within it. Other than those, the existence of radioactive gaseous radon from the combustion of natural gas indoors can cause severe diseases and damages to...

Software vulnerabilities represent a serious threat to cybersecurity, most cyberattacks exploit known vulnerabilities. Unfortunately, there is no agreed-upon policy for their disclosure. Disclosure policy (which sets a protected period given to a vendor to release the patch for the...

Tolls are collected on many highways as a means of traffic control and revenue generation. However, the presence of tollbooths on highway surely slows down traffic flow. Here, we investigate how the presence of tollbooths affect the average car speed using a simple-minded single lane...

Using a database of firms issuing short-term financing bonds and mid-term notes in China from 2007 to 2011, we uncover whether and how political connections influence the companies' capital allocation efficiency. The authors show that politically connected firms have significantly lower capital...

By establishing a foreign direct investment (FDI) technology spillover estimation model based on technology absorptive capacity and using provincial panel data of the coastal regions of East China from 2001 to 2010, we empirically conclude that FDI technology spillover effect in the coastal...

An intermodal transportation terminal is a facility that provides commuters with easy transfer between transit modes and providers such as buses, light rail, subway, taxis, airport shuttles, and commuter rail. The probability of a passenger transferring from one mode to another and the...

In the process of setting operational targets to achieve sustainable development of economy, environment and natural resources, estimation of potential energy saving and potential CO2 emission reduction becomes extremely important. This estimation can be conducted based on the energy efficiency...

As the demand for water continuously increases with population growth and economic development, the gap between water supply and demand in China has become increasingly wide. In recent years worsening water pollution has caused this gap to become much more serious. Conventional allocation...