Abstract: A method of a base station may comprise: detecting a beam failure for a terminal; in response to detecting the beam failure, transmitting a beam recovery early indicator (BREI) to the terminal based on a beam sweeping scheme; receiving a BREI response from the terminal; and identifying a preferred beam of the terminal based on reception of the BREI response.

Abstract: Disclosed is a technique for switching from a master node to a secondary node in a communication system. A method of a first communication node may comprise: adding the first communication node as a primary secondary cell (PSCell) to a second communication node through dual connectivity (DC); generating a first user plane path for smart dynamic switching (SDS) and a first instance for supporting the first user plane path according to a request from the second communication node; transmitting information on the first user plane path and the first instance to a terminal; receiving user data based on the first user plane path from the terminal as the first instance; and transmitting the user data to a core network using the first user plane path.

Abstract: A display device is provided including a substrate. A second semiconductor layer is disposed on the substrate. The second semiconductor layer includes Si. A second gate lower electrode overlaps a channel region of the second semiconductor layer. A second gate insulating layer is disposed on the second gate lower electrode. A second gate upper electrode and a light blocking layer are disposed on the second gate insulating layer. A first auxiliary layer is disposed on the second gate upper electrode and the light blocking layer. A first semiconductor layer overlaps the light blocking layer. The first semiconductor layer includes an oxide semiconductor. A first gate electrode overlaps a channel region of the first semiconductor layer. The first auxiliary layer includes an insulating layer including at least one compound selected from SiNx, SiOx, and SiON, and at least one material selected from F, Cl, and C.

Abstract: A work chair is provided herein a worker wears a pelvis belt in a transverse direction from both sides of a cushion chair so as to surround the pelvis, while simultaneously wearing a safety belt between both legs and along the front of the pelvis belt in a longitudinal direction by pulling the lower side of the cushion chair, thus allowing the centering position of the cushion chair to be firmly held against the buttocks around the anus, even when the worker repeatedly sits down and stands up and waddles, and maximizing convenience of use. Moreover, by correctly positioning the cushion chair, the worker can be prevented from filling on his or her buttocks while working, thus ensuring safety during use. Furthermore, the work chair ensures that the cushion chair is centered around the anus when the safety belt is worn, whereas an attachment/detachment ring is returned upward and fitted into a collecting ring when the safety belt is not worn.

Abstract: A work chair is provided herein a worker wears a pelvis belt in a transverse direction from both sides of a cushion chair so as to surround the pelvis, while simultaneously wearing a safety belt between both legs and along the front of the pelvis belt in a longitudinal direction by pulling the lower side of the cushion chair, thus allowing the centering position of the cushion chair to be firmly held against the buttocks around the anus, even when the worker repeatedly sits down and stands up and waddles, and maximizing convenience of use. Moreover, by correctly positioning the cushion chair, the worker can be prevented from filling on his or her buttocks while working, thus ensuring safety during use. Furthermore, the work chair ensures that the cushion chair is centered around the anus when the safety belt is worn, whereas an attachment/detachment ring is returned upward and fitted into a collecting ring when the safety belt is not worn.

Abstract: A web control system for solar tracking includes one or more trackers, a communication port management unit, a status processing unit, a tracker control unit, a back tracking unit, a web server unit, and the memory unit. The trackers operate in compliance with driving commands and change the position of a solar cell panel in response to the tracking of the location of a sun. The communication port management unit is responsible for data transmission and reception. The status processing unit scans the status of the trackers. The tracker control unit directly controls the trackers. The back tracking unit analyzes the status information, and controls the tracker control unit. The local GUI interface unit displays a local or remote user screen. The web server unit provides the GUI data to a user. The memory unit stores the information.