Abstract: A service providing system includes an operation terminal that includes a service information acquiring unit of acquiring service information indicative of at least one service and information of an apparatus to be used related to an electronic apparatus used for the at least one service, a receiving unit that receives a selection of one service, an apparatus information acquiring unit that acquires apparatus information determining at least one electronic apparatus, an apparatus information sending unit that sends the apparatus information through a previously defined interface; and an information processing apparatus that includes a service information sending unit that sends the service information and the information of the apparatus, and a service providing unit that provides the one service by controlling the at least one electronic apparatus by a cooperation method corresponding to the one service determined by the apparatus information sent from the operation terminal through the previously defined in

Abstract: The present invention provides: a carbon fiber sizing agent that can obtain a carbon fiber bundle having a superior effect of improving mechanical properties when composited using a resin; an aqueous dispersion thereof; a carbon fiber bundle; a sheet-shaped article having a carbon fiber bundle; and a composite material. The carbon fiber sizing agent contains: a compound (A) that is an ester of an unsaturated monobasic acid and an epoxy compound having a plurality of epoxy groups in the molecule, and that has at least one epoxy group in the molecule; a urethane acrylate oligomer (B) that is bifunctional and that has a tensile elongation rate of the cured product of at least 40%; and a polyurethane resin (C) having a tensile elongation rate of a dried coating film of 350-900% inclusive. The amounts of A-C contained satisfy the conditions described in the description. The aqueous dispersion disperses the sizing agent. The carbon fiber bundle contains 0.6-3.0 mass % inclusive of the sizing agent.