The demand for petroleum has risen rapidly due to increasing industrialization and modernization of the world. The limited reserve of the fossil fuels is also dwindling alongside escalation in the prices. The threats from these and food insecurity are, however, drawing the attention of...

As deep reinforcement learning (DRL) has been recognized as an effective approach in quantitative finance, getting hands-on experiences is attractive to beginners. However, to train a practical DRL trading agent that decides where to trade, at what price, and what quantity involves error-prone...

Inorganic superionic conductors hold great promise for all-solid-state lithium batteries because of their superior ionic conductivity. However, their application as electrolytes is limited by trade-off between ion conduction and stability. Here, a thin composite solid electrolyte, vermiculite-Li...