Abstract: The purpose of the present invention is to provide a methyl methacrylate-containing composition with high quality stability during storage. This can be solved with a methyl methacrylate-containing composition, a pyrazine compound represented by Formula (1) (component A1), and a polymerization inhibitor (Component B1), in which the concentration of methyl methacrylate is from 99 to 99.99% by mass.

Abstract: It is an object of the present invention to provide a technique capable of performing user estimation without making the user aware of it. The appliance has a first sensor input unit that inputs a plurality of control commands for controlling an operation, and estimates the user based on the control command input to the first sensor input unit and an operation feature amount at the time of inputting the control command. The first sensor input unit includes a touch panel. The operation feature amount includes an operation position of the touch panel, an electrostatic capacitance value corresponding to a pressing of the touch panel, and a time-dependent change pattern thereof.

Abstract: There is a need to acquire more reliable profile information without relying on only the personal subjective judgment on the profile information. Profile information about a dweller is automatically extracted by evaluating and comprehensively determining each of feature amounts concerning the dweller from sensing data acquired from a sensor or a usage log concerning an equipment instrument in a living space based on a criterion for the feature amounts predetermined for a profile item. The reliability of the self-reported profile information is evaluated by comparing and verifying the automatically extracted profile information with the self-reported profile information supplied by the dweller.

Abstract: It is an object of the present invention to provide a technique capable of performing user estimation without making the user aware of it. The appliance has a first sensor input unit that inputs a plurality of control commands for controlling an operation, and estimates the user based on the control command input to the first sensor input unit and an operation feature amount at the time of inputting the control command. The first sensor input unit includes a touch panel. The operation feature amount includes an operation position of the touch panel, an electrostatic capacitance value corresponding to a pressing of the touch panel, and a time-dependent change pattern thereof.

Abstract: There is a need to acquire more reliable profile information without relying on only the personal subjective judgment on the profile information. Profile information about a dweller is automatically extracted by evaluating and comprehensively determining each of feature amounts concerning the dweller from sensing data acquired from a sensor or a usage log concerning an equipment instrument in a living space based on a criterion for the feature amounts predetermined for a profile item. The reliability of the self-reported profile information is evaluated by comparing and verifying the automatically extracted profile information with the self-reported profile information supplied by the dweller.