A method and system for optimal model-based multivariable balancing for distributed hydronic networks based on global differential pressureflow rate information. Said water-based coating composition comprises mesoporous silica nanoparticles in organosilica, water, and a film-forming catalyst, and optionally with a small amount of ethanol. In accordance with a specified reproduction speed within the variable reproduction speed range, thinning-out or repeating processing is performed on the data of image andor audio utilizing the frame identification information, thereby making a reproduction speed of the main data variable easily to generate image signals or audio signals. An animated eye display may provide data in a more meaningful fashion.