Abstract: Provided is a buck-boost converting circuit including an LED current regulator and bypass switches. The buck-boost converting circuit includes switches coupled in a matrix form in order to individually control a plurality of LEDs connected in series, an LED current regulator, and a circuit capable of buck-boost conversion.

Abstract: A robot and an operation method thereof are disclosed. A robot may include a loading box provided to load goods, and to be movable at a certain distance with respect to the robot when closed and opened, a drive wheel configured to drive the robot, an auxiliary wheel provided at a position spaced apart from the drive wheel, and a variable supporter configured to change the position of the auxiliary wheel, and supporting the loading box, and the variable supporter may move the auxiliary wheel so as to correspond to the movement direction of the center of gravity of the robot. The robot may transmit and receive a wireless signal on the mobile communication network constructed according to a 5 Generation (G) communication.

Abstract: Disclosed is a mobile robot configured to cut lawn in a work area. The mobile robot may include a main body, a weight sensing sensor, an obstacle sensing sensor, a blade, and a processor. The mobile robot may execute an artificial intelligence (AI) algorithm and/or a machine learning algorithm, and perform communication with other electronic devices in a 5G communication environment. As a result, it is possible to enhance user convenience.

Abstract: A computer system for processing audio content may receive content that includes metadata on spatial features about a plurality of objects, convert a format set according to a production environment of the content to a format according to a playback environment in an electronic apparatus, and transmit the content in the converted format to the electronic apparatus. The computer system may support content produced in various production environments and various playback environments.

Abstract: Provided are a computer system for transmitting audio content to realize a user-customized being-there and a method thereof. The computer system may be configured to detect audio files that are generated for a plurality of objects at a venue, respectively, and metadata including spatial features that are set for the objects at the venue, respectively, and to transmit the audio files and the metadata for a user. An electronic device of the user may realize a being-there at the venue by rendering the audio files based on the spatial features in the metadata. That is, the user may feel a user-customized being-there as if the user directly listens to audio signals generated from corresponding objects at a venue in which the objects are provided.

Abstract: Methods and apparatus for sensing hydrogen in a mixture of hydrogen and natural gas are provided. One example of the apparatus comprises: a first chamber for receiving air; a second chamber for receiving the mixture of hydrogen and natural gas; a first electrode for adsorbing oxygen molecules from air in the first chamber and for reducing the oxygen molecules to oxide ions; a second electrode; an ionic conductor for transporting the oxide ions from the first electrode to the second electrode in order to cause the transported oxide ions to combine with hydrogen molecules at the second electrode; sensing circuitry for sensing an electrical parameter associated with the combination of the transported oxide ions with the hydrogen molecules at the second electrode; and processing circuitry configured to determine a proportion of hydrogen in the mixture, based at least in part on the electrical parameter sensed by the sensing circuitry.

Abstract: A method by a computer system including generating audio files based on respective audio signals, the audio signals having been respectively generated from a plurality of objects at a venue, generating metadata including spatial features at the venue that are respectively set for the objects, and transmitting the audio files and the metadata for the objects to a first electronic device to cause the first electronic device to realize a being-there at the venue by rendering the audio files based on the spatial features in the metadata may be provided.

Abstract: Provided are a computer system for producing audio content for realizing a user-customized being-there and a method thereof. The computer system may be configured to generate audio files based on respective audio signals that are respectively generated from a plurality of objects at a venue, set spatial features at the venue for the objects, respectively, using a production tool, and generate metadata for the audio files based on the spatial features. An electronic device may realize a being-there at the venue by rendering the audio files based on the spatial features in the metadata. That is, a user of the electronic device may feel a user-customized being-there as if the user directly listens to audio signals generated from corresponding objects at a venue in which the objects are provided.

Abstract: Provided is a floating structure for solar power generating on water. The floating structure includes: unit lines including a main buoyancy body and an auxiliary buoyancy body arranged in a transverse direction and being arranged in a longitudinal direction; a connection member that connects the main buoyancy body to the auxiliary buoyancy body so that the bottom surface of the main buoyancy body is located lower than the bottom surface of the auxiliary buoyancy body; and a platform that connects auxiliary buoyancy bodies included in adjacent unit lines in the longitudinal direction. One or more ends of the main buoyancy body and the auxiliary buoyancy body include a first fastening portion and a second fastening portion that fastens two or more of the main buoyancy body and the auxiliary buoyancy body, and the connection member includes a support portion and third fastening portions provided at ends of the support portion.

Abstract: Disclosed is an electrolysis device including an electrolytic cell composed of an anode compartment equipped with an anode, a cathode compartment equipped with a cathode, and a diaphragm separating the anode compartment and the cathode compartment from each other. The device further includes an alkaline solution supply unit for supplying an alkaline solution as an electrolyte to the anode compartment, an acidic solution supply unit for supplying an acidic solution as an electrolyte to the cathode compartment, and first and second outlets for discharging electrolyzed water from the anode compartment and the cathode compartment, respectively. In the anode compartment, hydroxide ions of the alkaline solution generate oxygen through an electrode reaction, and, in the cathode compartment, hydrogen ions generate hydrogen through an electrode reaction.

Abstract: The present invention relates to novel anti-CD40 antibodies and a use thereof and, more specifically, provided are a pharmaceutical composition for treating or preventing autoimmune diseases and a composition for inhibiting immune rejection during organ transplantation, both compositions containing, as an active ingredient, novel anti-CD40 antibodies that specifically bind to a novel epitope of CD40. Novel anti-CD40 antibodies of the present invention directly target CD40, but not CD40 ligands, and block the signaling of CD40-CD154 without stimulating platelets so as to exhibit excellent antagonistic effects, thereby being expected to be usable as a preparation effective in the treatment of autoimmune diseases and the inhibition of organ transplantation rejection.

Abstract: The present invention relates to novel anti-CD40 antibodies and a use thereof and, more specifically, provided are a pharmaceutical composition for treating or preventing autoimmune diseases and a composition for inhibiting immune rejection during organ transplantation, both compositions containing, as an active ingredient, novel anti-CD40 antibodies that specifically bind to a novel epitope of CD40. Novel anti-CD40 antibodies of the present invention directly target CD40, but not CD40 ligands, and block the signaling of CD40-CD154 without stimulating platelets so as to exhibit excellent antagonistic effects, thereby being expected to be usable as a preparation effective in the treatment of autoimmune diseases and the inhibition of organ transplantation rejection.

Abstract: A mask for extreme ultraviolet lithography is provided. The mask for extreme ultraviolet lithography comprises: a reflective structure comprising a plurality of unit layers laminated on a substrate and an etch stop layer placed between one pair of adjoining unit layers among the plurality of unit layers and having a trench through which the etch stop layer is exposed; and an absorption pattern placed on the bottom surface of the trench, wherein each of the unit layers comprises a first material layer and a second material layer on the first material layer.

Abstract: Provided is a buck-boost converting circuit including an LED current regulator and bypass switches. The buck-boost converting circuit includes switches coupled in a matrix form in order to individually control a plurality of LEDs connected in series, an LED current regulator, and a circuit capable of buck-boost conversion.

Abstract: A method for manufacturing an extreme ultraviolet (EUV) pellicle structure may include preparing a pellicle membrane that includes an intermediate layer structure in which EUV transmission layers and heat dissipation layers are alternately stacked, a first thin layer disposed on a top surface of the intermediate layer structure, and a second thin layer disposed on a bottom surface of the intermediate layer structure and having a heat emissivity lower than that of the first thin layer, and disposing a cooling structure for absorbing heat from the pellicle membrane on an edge sidewall of the pellicle membrane at which the heat dissipation layers are exposed.

Abstract: An apparatus and method for controlling a screen display in a portable terminal are provided. The apparatus includes a display unit, an input unit, a memory unit, a magnification identifying unit, and a controller. The display unit displays a screen display having a controlled magnification level. The input unit sets a zoom-in or zoom-out point on the screen display. The memory unit stores reference information for determining a zoom-in or zoom-out magnification level of the screen display. The magnification identifying unit measures a tilt of the portable terminal, and determines control or non-control of a magnification level of the screen display using the measured tilt. The controller controls the screen display according to the identified magnification level.

Abstract: The present invention relates to novel anti-CD40 antibodies and a use thereof and, more specifically, provided are a pharmaceutical composition for treating or preventing autoimmune diseases and a composition for inhibiting immune rejection during organ transplantation, both compositions containing, as an active ingredient, novel anti-CD40 antibodies that specifically bind to a novel epitope of CD40. Novel anti-CD40 antibodies of the present invention directly target CD40, but not CD40 ligands, and block the signaling of CD40-CD154 without stimulating platelets so as to exhibit excellent antagonistic effects, thereby being expected to be usable as a preparation effective in the treatment of autoimmune diseases and the inhibition of organ transplantation rejection.

Abstract: A display control method includes displaying at least a portion of a page, in which one or more content regions including contents are arranged, on a screen image; recognizing a scrolling operation with respect to the page; and scrolling the page based on the scrolling operation and applying an animation with respect to content included in a content region exposed on the screen image as the page is scrolled.

Abstract: An apparatus and method for controlling a screen display in a portable terminal are provided. The apparatus includes a display unit, an input unit, a memory unit, a magnification identifying unit, and a controller. The display unit displays a screen display having a controlled magnification level. The input unit sets a zoom-in or zoom-out point on the screen display. The memory unit stores reference information for determining a zoom-in or zoom-out magnification level of the screen display. The magnification identifying unit measures a tilt of the portable terminal, and determines control or non-control of a magnification level of the screen display using the measured tilt. The controller controls the screen display according to the identified magnification level.

Abstract: Disclosed is a pipe-type electrolysis cell including: a pair of terminal electrodes including an outer electrode and an inner electrode that are electrically connected to each other at respective first ends thereof and separated from each other at respective second ends thereof; and a bipolar electrode installed between the terminal electrodes and electrically insulated the terminal electrodes.