Due to the continuous development and growth of domestic international securities market, investors are more inclined use professional trading tools manage investments. So, for major institutions investors, transaction strategy gradually formulating managing liquidity assets will be meaningful. Therefore, we developed three models: first model is price prediction model; second investment return...

<p>Photovoltaic (PV) systems are becoming increasingly popular; however, arc faults on the direct current (DC) side more widespread as a result of effects aging well trend toward higher DC voltage levels, posing severe risk to human safety and system stability. The parallel present level compared with series faults, making it difficult spot arc. In this paper for aim condition monitoring,...