Abstract: This embodiment discloses a dual-band signal booster for a public safety radio network. The signal booster disclosed herein performs a low-noise amplification and a frequency down/up conversion on a radio frequency signal received from a donor antenna, amplifies the amplified and converted signal to a high-power level, and transmits the amplified signal to a service antenna. Further, the signal booster disclosed herein performs the low-noise amplification and the frequency down/up conversion on a radio frequency signal received from the service antenna, amplifies the amplified and converted signal to a high-power level, and transmits the amplified signal to the donor antenna. According to this embodiment, it is possible to simultaneously service a plurality of channels to increase a communication capacity.

Abstract: An off-chain data storage method and apparatus for supporting the integrity and capacity scalability of a data object stored in an off-chain storage. The off-chain data storage method includes collecting a plurality of transactions for a plurality of data objects, creating a root transaction on the basis of a Merkle root of a Merkle tree created based on the collected transactions, and storing the root transaction in a blockchain storage.

Abstract: The present disclosure relates to a distributed antenna monitoring apparatus for monitoring antennas of a distributed antenna system (DAS) installed in a building in a public safety radio network, and a method therefor.

Abstract: This embodiment discloses a dual-band signal booster for a public safety radio network. The signal booster disclosed herein performs a low-noise amplification and a frequency down/up conversion on a radio frequency signal received from a donor antenna, amplifies the amplified and converted signal to a high-power level, and transmits the amplified signal to a service antenna. Further, the signal booster disclosed herein performs the low-noise amplification and the frequency down/up conversion on a radio frequency signal received from the service antenna, amplifies the amplified and converted signal to a high-power level, and transmits the amplified signal to the donor antenna. According to this embodiment, it is possible to simultaneously service a plurality of channels to increase a communication capacity.

Abstract: The polymer electrolyte membrane includes: a first ion conductive polymer layer; and a second ion conductive polymer layer disposed on at least one surface of the first ion conductive polymer layer, wherein the first ion conductive polymer layer comprises a first ion conductive polymer comprising a sulfonic acid group, wherein the second ion conductive polymer layer comprises a second ion conductive polymer comprising a carboxylic acid group, and wherein a thickness of the second ion conductive polymer layer is in a range of 1% to 80% of a thickness of the polymer electrolyte membrane. Further, disclosed are the method for preparing the same, the membrane-electrode assembly including the same, and the fuel cell including the same.

Abstract: Disclosed is a 5G NR antenna device. An antenna module includes an antenna material formed of a metal material and having a semi-planar inverted-F antenna (PIFA) structure, and a support formed in the shape of a hexahedron with side and bottom faces that are bent from the antenna material by stamping, wherein the support and the antenna material are formed as an integral body.

Abstract: The present invention relates to a chemically modified anion exchange membrane and a method of preparing the same and, more particularly, an anion exchange membrane in which sulfonic acid groups in a perfluorinated sulfonic acid electrolyte membrane are substituted with anion conductive groups such as ammonium group, phosphonium group, imidazolium group, pyridinium group and sulfonium group, and a method of preparing an anion exchange membrane by chemically modifying sulfonic acid groups in a perfluorinated sulfonic acid electrolyte membrane.

Abstract: Disclosed is a secondary battery including a positive electrode, a negative electrode and an electrolyte, wherein the secondary battery further includes a reaction-inducing substance located in any one of the positive electrode, the negative electrode and the electrolyte, wherein the reaction-inducing substance forms a reaction product when exposed to a predetermined temperature or higher in a use environment of the secondary battery, wherein the reaction product is a non-conductor.

Abstract: Provided is an information providing method of an electronic apparatus, the method including identifying sales information of an item that is for sale through the network, identifying whether it is necessary to provide item sales management information based on the identified sales information of the item, and, when it is necessary to provide the item sales management information, providing the item sales management information generated based on the sales information of the item.

Abstract: The present disclosure relates to a technology for a sensor network, machine to machine (M2M), machine type communication (MTC), and Internet of things (TOT). The present disclosure can be utilized for intelligent services (smart home, smart building, smart city, smart car or connected car, healthcare, digital education, retail, security and safety related services, etc.) on the basis of the above technology. The present disclosure provides a method and apparatus for controlling operations of electronic devices.

Abstract: The present inventive concept relates to a chemically modified anion exchange membrane and a method of preparing the same and, more particularly, an anion exchange membrane in which sulfonic acid groups in a perfluorinated sulfonic acid electrolyte membrane are substituted with anion conductive groups such as ammonium group, phosphonium group, imidazolium group, pyridinium group and sulfonium group, and a method of preparing an anion exchange membrane by chemically modifying sulfonic acid groups in a perfluorinated sulfonic acid electrolyte membrane.

Abstract: Disclosed is an antenna device. The antenna device includes a first conductor pattern including a plurality of first antenna components, the first conductor pattern formed on a first substrate, a second conductor pattern including a plurality of second antenna components, the second conductor pattern formed on a second substrate, and a plurality of conductor lines connecting each of the first antenna components of the first conductor pattern and each of the second antenna components of the second conductor pattern, wherein the first conductor pattern and the second conductor pattern may be spaced apart from each other.

Abstract: A kickdown switch for an accelerator pedal informs a driver of a misoperation state by using a kickdown switch provided in the accelerator pedal when the driver misoperates the accelerator pedal rather than operating a brake pedal while braking is required. Accordingly, the driver can definitely recognize the misoperation state of the accelerator pedal and rapidly stop misoperation of the accelerator pedal and sudden acceleration of the vehicle, whereby occurrence of accidents can be prevented.

Abstract: A video encoding method and apparatus and a video decoding method and apparatus are provided. The video encoding method includes: prediction encoding in units of a coding unit as a data unit for encoding a picture, by using partitions determined based on a first partition mode and a partition level, so as to select a partition for outputting an encoding result from among the determined partitions; and encoding and outputting partition information representing a first partition mode and a partition level of the selected partition. The first partition mode represents a shape and directionality of a partition as a data unit for performing the prediction encoding on the coding unit, and the partition level represents a degree to which the coding unit is split into partitions for detailed motion prediction.

Abstract: In various embodiments, a metamaterial structure antenna may comprise: a feed line for feeding a signal; a ground plane comprising a cross-shaped aperture forming circular polarization on the basis of a magnetic field induced by the fed signal; and a patch plane formed parallel to the ground plane which emits electromagnetic waves on the basis of the circular polarization.

Abstract: An antenna device includes a plurality of first antennas for communication in a first frequency band, a first ground plane configured to provide a ground voltage to the first antennas, a plurality of second antennas for communication in a second frequency band, and a second ground plane configured to provide a ground voltage to the second antennas, and the first ground plane and the second ground plane are electrically isolated from each other.

Abstract: An apparatus is provided to inhibit forcible separation of a shift cable 100 coupled to a shift lever 220 by a cover member 300 combined with a shifting device 200 which includes a shift lever housing 210 and the shift lever 220, thereby preventing forcible changing of a current gear from a P-stage to a N-stage in a vehicle. Accordingly, it is possible to help prevent theft of the vehicle.

Abstract: Disclosed embodiments provide systems and methods implementing a web-browser plugin for providing requested information. A method for providing requested information comprises receiving, as a user interaction on a graphical user interface, a request to provide data associated with a target object presented on a web page, retrieving an object identifier associated with the target object based on a determined data accessibility, the object identifier incorporated in the web page, transmitting the retrieved object identifier to a plurality of systems storing data associated with the target object, the plurality of systems configured to provide data corresponding to the received object identifier in response to the received object identifier, receiving data responsive to transmitting the retrieved object, modifying the web page to include the received data, and presenting the web page on the graphical user interface.

Abstract: The present invention relates to a filler comprising a hyaluronic acid hydrogel having a lift value in a specific range relative to the unit amount (w/w %) of hyaluronic acid included in a filler, in contrast to the modification degree, and as a result of having said lift value the filler exhibits improved high viscoelasticity flow properties, has the advantages of both monophasic and biphasic hyaluronic acid hydrogel fillers, and thus exhibits good tissue-restoring properties, has low mobility when injected into skin whilst still maintaining the shape thereof for a long time, and has minimized deformation of the hyaluronic acid through the minimization of the use of crosslinkers, and thus the natural form of hyaluronic acid molecules can be maintained, enabling a reduction in the occurrence of immune reactions and side effects, and thus has excellent soft tissue restoration properties, volume expansion properties and wrinkle alleviation properties.

Abstract: An example user terminal apparatus includes communication circuitry configured to be connected to a home network comprising a plurality of devices; a display configured to display a UI screen for managing the home network; a sensor configured to sense a user manipulation of the UI screen; and processing circuitry configured to change the UI screen displayed on the display according to the user manipulation. The UI screen is one of a plurality of service pages that are changeable according to a user manipulation in a first direction, the plurality of service pages being pages for respectively providing different home network management services. At least one of the plurality of service pages comprises an area that is displayable on the display according to a user manipulation in a second direction.