A Meta-Learning-Assisted Training Framework for Physical Layer Modeling in Optical Networks

Application progress of enhanced coagulation in water treatment

“…Studies have shown that moderate amounts of ozone (low doses) enhance coagulation. 75 Several explanations have been proposed: 10,[76][77][78][79] (1) ozone oxidation can increase the concentration of oxygenated functional groups on solid surfaces (such as carboxylic acids), leading to complexation with cations (such as Ca 2+ , Mg 2+ , Al 3+ , etc.) and formation of metal humic acid complex precipitates; (2) ozone can convert high-molecular-weight chemicals into low-molecular-weight chemicals, reducing space and electrostatic repulsion, and ozonation reduces the stabilization of organics that cover the surface of particles, which results in their desorption; (3) ozonation polymerizes metastable organics, which results in particle aggregation through bridging reactions; (4) ozonation changes the surface chemistry of organics and increases coagulation via charge neutralization; and (5) ozone oxidation ruptures organometallic complexes, resulting in the in situ production of coagulants.…”

“…For example, permanganate oxidation-assisted coagulation has been widely used to improve turbidity and natural organic matter (NOM) and algae removal in the coagulation-ltration process. 9,10 Ballast microsand and magnetic powder are very mature technologies, 11,12 including "Actio" technology and "CoMag" technology. Researchers have further enhanced the application of ballast technology in wastewater treatment by modifying or changing the dosing materials based on this principle.…”

Meta-learning-based failure localization with digital-twin-enabled multi-mirror models in optical networks

“…Recently, meta learning shows potential to model complex tasks with few samples thanks to its advanced model updating procedure [9]. By performing a "meta training" across similar tasks, a pretrained-model can be obtained, which then is adapted to a new task by fine-tuning it with few samples from the new task.…”