Abstract: Provided is a base station that performs feedback with regard to data transmission. The base station includes a downlink feedback information (DFI) generation unit and a transmitter. On the basis of a resource allocation configuration that was configured by a terminal, the DFI generation unit determines a transmission method for feedback information that includes a response signal regarding uplink data. The transmitter transmits the feedback information on the basis of the transmission method.

Abstract: According to the present invention, a base station can dynamically change a repetition transmission method as appropriate. In a base station (100), a repetition control unit (103) determines a data repetition pattern for a terminal (200). A transmission unit (109) repeatedly transmits data (repetition transmission) on the basis of the repetition pattern. The data repetition pattern corresponds to control information to be reported to the terminal (200) by dynamic signaling.

Abstract: An instrument panel reinforcement which extends in a vehicle width direction and of which both ends are fixed to a side surface of a vehicle at positions on a front side of an instrument panel in a vehicle front-rear direction includes a first support portion configured to support a steering mechanism, and a second support portion disposed in a row with the first support portion in a vehicle width direction and is detachably connected to the first support portion.

Abstract: A roll forming method includes: performing a cross-section forming process to causing a steel strip, to pass through a forming roll die so that a cross-sectional shape of the steel strip is formed into a predetermined cross-sectional shape; performing a heating process of heating the steel strip to a first temperature that is equal to or higher than an austenitizing temperature; performing a preliminary cooling process of cooling the steel strip to a second temperature lower than the austenitizing temperature and equal to or higher than a martensite transformation point; performing a cross-section correcting process of causing the steel strip to pass through a correction roll die and correcting the cross-sectional shape of the steel strip, and performing a main cooling process of cooling the steel strip having passed through the correction roll die to a third temperature lower than the martensite transformation point.

Abstract: A roll forming method includes: performing a cross-section forming process to causing a steel strip, to pass through a forming roll die so that a cross-sectional shape of the steel strip is formed into a predetermined cross-sectional shape; performing a heating process of heating the steel strip to a first temperature that is equal to or higher than an austenitizing temperature; performing a preliminary cooling process of cooling the steel strip to a second temperature lower than the austenitizing temperature and equal to or higher than a martensite transformation point; performing a cross-section correcting process of causing the steel strip to pass through a correction roll die and correcting the cross-sectional shape of the steel strip, and performing a main cooling process of cooling the steel strip having passed through the correction roll die to a third temperature lower than the martensite transformation point.