Accretion disks around supermassive black holes in active galactic nuclei produce continuum radiation at ultraviolet and optical wavelengths. Physical processes the accretion flow lead to stochastic variability of this emission on a wide range timescales. We measure observed 67 characteristic timescale which power spectrum flattens. find correlation between hole mass, extending over entire mass...

The Mean Residence Time is a quantity which used very often to characterise chemical reactors. This can be calculated using the Distribution of specific, continuous reactor and assuming closed-closed boundary conditions. Many reactors in industry though, are discontinuous ones direct application these methods general not possible. work presents new distribution, Local Distribution, observes eac...

Evaluating the potential utilization of hybrid energy systems and determining multi-scale optimal operation strategy is critical to power system planning in context structure adjustment, especially for large-scale systems. Considering long-term short-term complementary characteristics, this paper puts forward a coordinated optimization framework integrated world's largest multi-energy base on Y...