Photocatalytic uranium extraction in seawater provides a promising strategy for the sustainable utilization of nuclear energy. Herein, we in-situ constructed Cu2O/CuO interface by a wet-etching method, achieving an ultrafast reaction kinetics and photocatalytic activity for seawater U(VI)...

We propose a reinforcement learning (RL) approach to solve the continuous-time mean-variance portfolio selection problem in a regime-switching market, where the market regime is unobservable. To encourage exploration for learning, we formulate an exploratory stochastic control problem with an...