Abstract: A top-blowing lance nozzle is configured to freely switch an adequate expansion condition so as to control an oxygen-blowing amount and a jetting velocity independently of each other without requiring a plurality of lance nozzles or a mechanically movable part. A lance nozzle is configured to blow refining oxygen to molten iron charged in a reaction vessel while a gas is blown from a top-blowing lance to the molten iron. One or more blowing holes for blowing a working gas are on an inner wall side surface of the nozzle, at a site where the lance nozzle has a minimum cross-sectional area in a nozzle axis direction or at a neighboring site of the site.

Abstract: A detection device is configured to detect an electrostatic capacitance between an operated member having a plurality of detection areas and an electrode having areas associated with the detection areas respectively. A control device is configured to determine whether an operation is performed to each of the detection areas based on whether a difference between the electrostatic capacitance and a reference electrostatic capacitance exceeds a threshold range, and to change the reference electrostatic capacitance based on a change in the electrostatic capacitance. The control device holds the reference electrostatic capacitance in a case where different changes in the electrostatic capacitance are detected between the detection areas.

Abstract: A detection device is configured to detect an electrostatic capacitance between an operated member having a plurality of detection areas and an electrode having areas associated with the detection areas respectively. A control device is configured to determine whether an operation is performed to each of the detection areas based on whether a difference between the electrostatic capacitance and a reference electrostatic capacitance exceeds a threshold range, and to change the reference electrostatic capacitance based on a change in the electrostatic capacitance. The control device holds the reference electrostatic capacitance in a case where different changes in the electrostatic capacitance are detected between the detection areas.

Abstract: A center of gravity shifting training system includes a display device having a display screen, a measurement device configured to measure a center of gravity position of the user, and a control device. The control device has a training mode and a setting mode of preparing setting data indicating a position of the target image in the display screen. In the setting mode, the control device performs estimation of a deviation of the center of gravity position based on the center of gravity position measured, and prepares the setting data indicating the position of the target image according to a result of the estimation. In the training mode, the control device displays the operation image on the screen in accordance with the center of gravity position measured, and displays the target image on the screen based on the setting data prepared through the setting mode.

Abstract: A center of gravity shifting training system includes a display device having a display screen, a measurement device configured to measure a center of gravity position of the user, and a control device. The control device has a training mode and a setting mode of preparing setting data indicating a position of the target image in the display screen. In the setting mode, the control device performs estimation of a deviation of the center of gravity position based on the center of gravity position measured, and prepares the setting data indicating the position of the target image according to a result of the estimation. In the training mode, the control device displays the operation image on the screen in accordance with the center of gravity position measured, and displays the target image on the screen based on the setting data prepared through the setting mode.

Abstract: The exercise assisting system includes: a display device including a display screen displaying an image to a user; a comparison image storing unit storing a comparison image representing an image of an exerciser performing a predetermined exercise; a comparison image display unit displaying the comparison image stored in the storing unit on the screen; a mirror image displaying means displaying a mirror image of the user so as to overlap the comparison image; a characteristic amount extraction unit detecting positions of sampling points of a body of the user and calculating a characteristic amount representing a posture of the user based on the position; a posture estimation unit comparing the characteristic amount from the extraction unit with a criterion amount representing a posture of the exerciser and estimating a deviation between postures of the user and the exerciser; and a presentation unit presenting an estimation result of the estimation unit.

Abstract: An improved human motion applicator assures a quick and sufficient amount of displacement given to a part of a human body. The applicator includes a support adapted to be fitted on the part of the human body. The support carries at least one electro-active elastic actuator in a force-transmitting relation to the human part. The actuator includes a dielectric core and a pair of electrodes on opposite of the core for receiving a driving DC voltage thereacross. The elastic actuator has a length and elastically deforms in the lengthwise direction to exert a stretching force to the human part to a greater extent as the driving DC voltage increase. The applicator also includes a controller which applies the driving DC voltage of varying levels to the elastic actuator, thereby generating a varying motion-inducing force to be applied to the part of the human body.

Abstract: An improved human motion applicator assures a quick and sufficient amount of displacement given to a part of a human body. The applicator includes a support adapted to be fifted on the part of the human body. The support carries at least one electro-active elastic actuator in a force-transmitting relation to the human part. The actuator includes a dielectric core and a pair of electrodes on opposite of the core for receiving a driving DC voltage thereacross. The elastic actuator has a length and elastically deforms in the lengthwise direction to exert a stretching force to the human part to a greater extent as the driving DC voltage increase. The applicator also includes a controller which applies the driving DC voltage of varying levels to the elastic actuator, thereby generating a varying motion-inducing force to be applied to the part of the human body.