Abstract: The present specification relates to a hetero-cyclic compound represented by the following Chemical Formula 1, and an organic light emitting device including the same. Such hetero-cyclic compound used as a material for an organic material layer of an organic light emitting device improves efficiency, achieves low driving voltage, and/or improves service life characteristics. [Chemical Formula 1] wherein R1 to R5, r3 to r5, L1, and Ar1 are defined therein.

Abstract: The present invention discloses a method for a terminal to receive an aperiodic channel state information-reference signal (CSI-RS) resource in a wireless communication system. In particular, the method is characterized by: receiving period information for a periodic CSI-RS resource and first offset information; receiving configuration information related to an aperiodic CSI-RS resource set including at least one aperiodic CSI-RS resource; and receiving the at least one aperiodic CSI-RS resource on the basis of the configuration information and the first offset information, wherein the period information is not used for the at least one aperiodic CSI-RS resource.

Abstract: The present specification relates to a method and apparatus for transmitting a reference signal in a wireless communication system. According to this specification, in a method for transmitting a reference signal in a wireless communication system, a method performed by a base station comprises: transmitting, to a terminal, control information including panel identification information related to identification of a plurality of antenna panels used for transmission of the reference signal, wherein a reference signal sequence used to generate the reference signal is initialized based on the panel identification information by the terminal; and receiving, from the terminal, the reference signal generated based on the initialized reference signal sequence by the terminal.

Abstract: First and second controllers output respective first and second control signals for first and second plants that respectively correspond to the stages of an actuator. An inverse model of the first plant used to determine a decoupled output of the second plant from a combined output of the first and second plants. A disturbance estimate is subtracted from the second control signal to obtain a disturbance-corrected output. A loop-shaping filter is used between the disturbance corrected output and the second plant.

Abstract: A multi-display device includes: a plurality of display panels adjacent to each other; and a first upper frame between the display panels adjacent to each other. The first upper frame may include: a partition wall portion between the display panels adjacent to teach other; and a bezel portion extended from the partition wall portion to overlap front surface edges of each of the display panels adjacent to each other.