Abstract: A rental fee calculation device for calculating a rental fee for renting a battery to be rented when the battery is rented to a user via a battery storage apparatus configured to allow the battery to be attached and detached includes: a first fee calculation unit configured to calculate a first fee based on a rental period from when the battery is removed from the battery storage apparatus to when the battery is returned; a second fee calculation unit configured to calculate a second fee based on a used power amount discharged by the battery during the rental period; a rental fee calculation unit configured to calculate the rental fee based on the first fee and the second fee; and an input and output unit functioning as an output unit configured to output rental fee information indicating the calculated rental fee.

Abstract: In a battery rental management device for controlling a battery storage apparatus provided in a predetermined management area where a worker works and configured to allow a battery to be rented to be attached and detached, in response to receiving a rental request for the battery which includes identification information of a desiring user, a storage unit configured to store identification information of an authorized user who has an authority to use the battery is referred to, and whether the desiring user is the authorized user is determined based on the identification information of the desiring user, and the desiring user is permitted to rent the battery based on a determination that the desiring user is the authorized user.

Abstract: An electrolyte solution containing a compound represented by the following formula (1).

Abstract: This magnetic disk device is a 3.5-inch magnetic disk device equipped with magnetic disks formed from an aluminum alloy substrate. The magnetic disks arranged in a stacked manner have a thickness Td of 0.3 mm to 0.6 mm, the number N of magnetic disks involved is 10 to 16, and spacers disposed between the magnetic disks have an outside diameter 2 Rso of 35 mm to 65 mm. The outside diameter 2 Rso (mm) of the spacers satisfies 2 Rso??60 Td+70 and 2 Rso??0.5 N2?+16.5 N?73.

Abstract: An electrolyte solution containing a compound (1) represented by the formula (1), (wherein R101 and R102 are each individually a substituent such as a C1-C7 alkyl group, and the substituent optionally contains at least one divalent to hexavalent hetero atom in a structure or optionally has a structure obtained by replacing at least one hydrogen atom by a fluorine atom or a C0-C7 functional group) and at least one compound (11) selected from compounds such as a compound represented by formula (11-1) (wherein R111 and R112 are the same as or different from each other and are each a hydrogen atom or the like, and R113 is an alkyl group free from a fluorine atom or the like):

Abstract: A steering device (1) includes: a steering wheel (2); a plurality of proximity sensors (4, 5, 6, 7) which are arranged on a rim part (20) of the steering wheel (2), and output detection values (Ch_1, Ch_2, Ch_3, Ch_4) that vary according to distance between each arrangement position and the human body; and a grip determination device (8) which determines the presence/absence of gripping of the rim part (20) based on the detection values (Ch_1 to Ch_4) of the proximity sensors (4 to 7). The grip determination device (8) includes a selector (81) which selects a target sensor from among the plurality of proximity sensors (4 to 7) based on a change extent of detection values of the plurality of proximity sensors (4 to 7); and a determinator (82) which determines the presence/absence of gripping of the rim part (20) based on the detection value of the target sensor.

Abstract: A gas estimating unit configured to estimate an amount and a composition of a gas generated inside a secondary battery includes at least one processor and at least one memory electrically coupled to each other. The at least one processor is configured to detect a presence or absence of a gas generating period. The gas generating period is a period for which the gas is generated inside the secondary battery while the secondary battery is in one or both of an overcharging state in which the secondary battery exceeds a voltage limit and a high-temperature state in which the secondary battery exceeds a temperature limit.

Abstract: A working part (13) of a lawnmower (10) includes a disk (20) rotatably supported by a main body of the lawnmower and configured to be rotated by a power source (15), a blade (36) having a base end portion (46) rotatably attached to an outer peripheral part of the disk via a pivot shaft (32) and a free end portion (47) configured to protrude radially outward from an outer peripheral edge of the disk, and a blade guard (37) having a base end portion (51) rotatably supported by the pivot shaft and a free end portion (52) overlying the free end portion of the blade.

Abstract: A method for controlling a medical device for treating a biological tissue includes controlling the treatment procedure based on the heat capacity of the biological tissue being treated as observed by the medical device. A change in the rate of change of heat capacity from a decreasing rate to an increasing rate or exceeding a maximum threshold value of rate of change of the heat capacity indicates completion, e.g., cutting or sealing. The heat capacity of the biological tissue may be estimated by determining a ratio of energy input to an end-effector of the medical device over a sampling interval to a change in temperature of the biological tissue over that sampling interval. The method may be incorporated into a controller for a medical device for treating a biological tissue.

Abstract: A contact detection device includes an electrostatic capacitance sensor provided on a steering wheel of a vehicle, and configured to detect contact of a human body with the steering wheel, an estimation unit configured to estimate whether the human body is in contact with the steering wheel, and a diagnosis unit configured to conduct a failure diagnosis related to the electrostatic capacitance sensor, based on a detection result of the electrostatic capacitance sensor in a case where the estimation unit estimates that the human body is in contact with the steering wheel and a detection result of the electrostatic capacitance sensor in a case where the estimation unit estimates that the human body is in no contact with the steering wheel.

Abstract: A medical device and a method of operating the same are provided. In a method of operating a medical device for ultrasonic treatment, the medical device including an ultrasonic instrument having a vibration transmission member that vibrates ultrasonically, a power source configured to supply electric energy to the ultrasonic instrument, and a processor including a control unit operably connected to the power source, the method includes: controlling supply of the electric energy to the ultrasonic instrument, obtaining a temperature value related to a temperature of the vibration transmission member, the vibration transmission member being separate from a transducer, and controlling the power source to reduce or stop the supply of electric energy of the power source based on the rate of change of the temperature value.

Abstract: In a lawn mower, one power receiving terminal is provided on a surface of the lawn mower, and the other power receiving terminal is disposed in a position where it sandwiches at least a part, such as the upper front portion, of a vehicle body with the one power receiving terminal. This configuration serves to suppress a situation in which moisture establishes electrical continuity between the pair of power receiving terminals.

Abstract: The lawn mower has at least a first structure in which a pair of power receiving terminals are separately disposed in the vehicle body cover and the vehicle body that are different parts from among a plurality of parts constituting the lawn mower, or a second structure in which the power receiving terminal, which is one of the pair of power receiving terminals, has a downward-facing contact surface that comes into contact with the charging station.

Abstract: A method for controlling a temperature at an end-effector of an instrument connected with a controller includes estimating a residual energy associated with a prior application of base energy to the end-effector based on a first set of parameters. An amount of electric power that is converted to heat at the end-effector is estimated based on the first set of parameters. A current temperature at the end-effector is estimated based on: (i) the residual energy, (ii) the amount of electric power provided to the end-effector, and (iii) a time for which the electric power is provided. The electric power provided to the instrument is controlled to maintain the current temperature at the end-effector within a predetermined range.

Abstract: A current collector monitoring system in one aspect of the present disclosure is provided with: a collected current measurement unit; a collected current state determination unit; an image acquisition unit; an event recognition unit; an event determination unit; and a determination result output unit. When a state of collected current corresponds to an abnormal state, the image acquisition unit acquires an image including, within an angle of view, a collector shoe provided to a current collector.

Abstract: Provided is a collected current monitoring device enabling an analysis of collected current in each current collector while allowing a reduced equipment cost. The collected current monitoring device of the present disclosure is installed in a railroad vehicle including current collectors, main transformers, and main converters.

Abstract: Provided is a collected current monitoring device. A transformer current acquisition unit acquires a current value Ip of a current flowing through a part of a plurality of transformers. A total collected current calculation unit calculates a current value Iall of a collected current supplied by a plurality of current collectors from the current value Ip by using a following Equation (1): Iall=Ip×(Mall/Mp). A collected current acquisition unit acquires a current value IX of a collected current supplied by the current collector(s) other than one current collector. The collected current calculation unit calculates a current value IY of a collected current supplied by the one current collector by subtracting the current value IX from the current value Iall.

Abstract: The lawn mower has at least a first structure in which a pair of power receiving terminals are separately disposed in the vehicle body cover and the vehicle body that are different parts from among a plurality of parts constituting the lawn mower, or a second structure in which the power receiving terminal, which is one of the pair of power receiving terminals, has a downward-facing contact surface that comes into contact with the charging station.

Abstract: A working part (13) of a lawnmower (10) includes a disk (20) rotatably supported by a main body of the lawnmower and configured to be rotated by a power source (15), a blade (36) having a base end portion (46) rotatably attached to an outer peripheral part of the disk via a pivot shaft (32) and a free end portion (47) configured to protrude radially outward from an outer peripheral edge of the disk, and a blade guard (37) having a base end portion (51) rotatably supported by the pivot shaft and a free end portion (52) overlying the free end portion of the blade.

Abstract: The disclosure is provided to improve the accuracy of a ground fault position detected from a power conditioning system. A ground fault position calculation part (41) calculates a ground fault position (Pg) by using a power supply voltage of a solar cell string (11), a ground fault current (Ig), and a ground potential of an input terminal (N) measured by a power conditioning system (12). The ground fault position calculation part (41) sets a lower limit value of the power supply voltage to be used.