Novel valve spring blocking structure for generating pulsed waterjet was proposed, which belonged to interrupted type and purposed using in petroleum drilling. The characteristics and rock breakage performances of the pulsed waterjet were studied through experiments by changing its structural...

The high growth of the automotive industry reveals the very bright future of this technology and its high penetration effects on the human society. No doubt that the random and volatile charging demand of these devices would affect the power grid optimal operation and scheduling which may be...

Extensive studies have been carried out on vertical or horizontal impact cutting because they are both high-efficiency rock breaking methods, but little attention has been paid to impact cutting with simultaneous vertical and horizontal impact loads. In this work, we conducted numerical...

Background: Online lending (P2P lending) is a type of internet finance mainly used to meet the financial needs of small and medium-sized enterprises and groups of individuals. It is a supplement to the traditional financial system. Method: This paper uses PPDai.com - the most influential online...

We analyze preferences of foreign institutional investors in the Chinese stock market in a sample that covers 2003 to 2014. We find foreign investors changed their investment behavior during the sample period from generic patterns found in much of the world to China-specific patterns. The...