Abstract: An information processing method according to an aspect of the present disclosure includes: acquiring first information indicating an initial value of one or more items; executing a first simulation using the first information to identify second information including information indicating a first location where an accident involving the one or more mobile bodies can occur and information regarding a mobile body and a person present in surroundings of the first location; calculating, based on the first information, third information that is an indicator of usability of the service and fourth information that is an indicator of economic performance of the service; calculating, based on the second information, fifth information indicating an amount of damage caused in case of the accident; and retrieving, using the third information, the fourth information, and the fifth information, an optimal solution for the one or more items under a predetermined condition.

Abstract: The present invention provides a suction device and a nozzle device, whose structures are simple, which can cause a fluid to be automatically expelled out of a nozzle toward an object by placing the nozzle close to or in contact with the object when conducting suction operation, and which can automatically stop the fluid being ejected out of the nozzle when the nozzle is moved away from the object. The fluid nozzle 12 for expelling the fluid toward the opening of the nozzle is provided inside of the nozzle 11. When the opening 13 of the nozzle 11 is unobstructed, the outside air 300 being sucked through the opening 13 into the nozzle 11 overcomes the fluid being expelled out of the fluid nozzle 12, and the fluid together with the outside air 300 can be sucked into the nozzle 11 through its opening 13 without the fluid being ejected out of the nozzle 11.

Abstract: The present invention provides a fluid injection and recovery device capable of spraying a fluid over an object, recovering at least, the sprayed fluid, as well as filtering and recycling the recovered fluid. This fluid injection and recovery device comprises: a main tank capable of containing fluid; a filter unit capable of filtering the fluid contained in the main tank; a fluid sprayer for spraying the fluid filtered with the filter unit over an object; and a recovery unit capable of recovering, into the main tank, the fluid sprayed over the object and the matter removed by the fluid.

Abstract: The present invention provides a nozzle capable of easily removing an aspiration object (residual solidified object) and an aspirator equipped with such a nozzle. This nozzle is connected to the aspirator and is used to aspirate the aspiration object. The nozzle comprises: a nozzle body including an opening, which can be opposed to a surface with the residual aspiration object, and a suction port for aspirating the aspiration object; and a liquid injection mechanism, which is provided at the nozzle body, for ejecting liquid toward the aspiration object.

Abstract: The present invention provides a nozzle capable of easily removing an aspiration object (residual solidified object) and an aspirator equipped with such a nozzle. This nozzle is connected to the aspirator and is used to aspirate the aspiration object. The nozzle comprises: a nozzle body including an opening, which can be opposed to a surface with the residual aspiration object, and a suction port for aspirating the aspiration object; and a liquid injection mechanism, which is provided at the nozzle body, for ejecting liquid toward the aspiration object.

Abstract: The present invention provides a fluid injection and recovery device capable of spraying a fluid over an object, recovering at least, the sprayed fluid, as well as filtering and recycling the recovered fluid. This fluid injection and recovery device comprises: a main tank capable of containing fluid; a filter unit capable of filtering the fluid contained in the main tank; a fluid sprayer for spraying the fluid filtered with the filter unit over an object; and a recovery unit capable of recovering, into the main tank, the fluid sprayed over the object and the matter removed by the fluid.

Abstract: The present invention provides a nozzle capable of easily removing an aspiration object (residual solidified object) and an aspirator equipped with such a nozzle. This nozzle is connected to the aspirator and is used to aspirate the aspiration object. The nozzle comprises: a nozzle body including an opening, which can be opposed to a surface with the residual aspiration object, and a suction port for aspirating the aspiration object; and a liquid injection mechanism, which is provided at the nozzle body, for ejecting liquid toward the aspiration object.

Abstract: A cleaner for both dry and wet use capable of sucking not only a solid but also a semisolid and liquid.