One of the important issues in water transport and sewer systems is determining the flow resistance and roughness coefficient.An accurate estimation of the roug
<正> By constructing a series of mixture,which is inseparable but satisfies the Mermin-Klyshko inequality,for the N-qubit system,we prove that'violation of
<正> An optimal current lattice model with backward-looking effect is proposed to describe the motion of trafficflow on a single lane highway.The behavior of th