Abstract: Provided is a method and system for group-based energy harvesting. The group-based energy harvesting method performed by an access point in an energy harvesting system includes allocating an access period in each group including at least one station, receiving an energy state from the station in the group corresponding to the allocated access period, and scheduling stations in each group as a data transmission station or an energy reception station based on the received energy state.

Abstract: A silencer for a leaf spring for a commercial vehicle is provided. The silencer includes an upper rubber body having defined therein a fitting hole into which a second leaf spring is press-fitted, with a top surface of the upper rubber body serving as a contact surface in contact with a first leaf spring, and a lower rubber body having defined therein an accommodation space, with a first buffering protrusion being provided on a bottom surface of the lower rubber body such that a third leaf spring is able to be in contact with the first buffering protrusion.

Abstract: The present disclosure relates to a method and apparatus for selective communication between a tag and a reader using a filter. According to an embodiment of the present disclosure, a communication method between a tag and a reader using a filter performed by a reader includes generating a filter based on tag information of the tag to collect data, transmitting the generated filter to the tag, and receiving data from a tag that selected through a filtering operation of the transmitted filter.

Abstract: Provided is a spike neural network circuit. The spike neural network circuit includes an axon configured to generate an input spike signal, a synapse including a first transistor for outputting a current according to a weight and a second transistor connected to the first transistor and outputting the current according to an input spike signal, a neuron configured to compare a value according to the current output from the synapse with a reference value and generate an output spike signal based on a comparison result, and a radiation source attached to a substrate on which the synapse is formed, configured to output radiation particles to the synapse, and configured to increase magnitudes of threshold voltages of the first and second transistors of the synapse.

Abstract: Methods of encoding and decoding an audio signal using a learning model and an encoder and a decoder for performing the methods are disclosed. A method of encoding an audio signal using a learning model may include extracting pitch information of the audio signal, determining a dilation factor of a receptive field of a first expandable neural network block to extract a feature map from the audio signal based on the pitch information, generating a first feature map of the audio signal using the first expandable neural network block in which the dilation factor is determined, determining a second feature map by inputting the first feature map into a second expandable neural network block to process the first feature map, and converting the second feature map and the pitch information into a bitstream.

Abstract: A method and a user terminal for providing contents to a user, and a method and a server for providing contents to a user terminal. The method for providing contents to a user includes: displaying, by a user terminal, a first list including a first content belonging to a first set and a second content belonging to a second set different from the first set in a first region on a chat room screen; when a user's interaction with the first content is received, displaying, by the user terminal, a first interface for requesting contents in the first set; and when a user's interaction with the first interface is received, displaying, by the user terminal, an icon indicative of the first set on the screen and a second list including at least one content belonging to the first set in the first region.

Abstract: A wall mount including a guide member. The guide member includes a first guide coupling portion positioned in one end portion of the guide member, a second guide coupling portion positioned in another end portion of the guide member, the second guide coupling portion being symmetrical to the first guide coupling portion, a third guide coupling portion positioned between the first guide coupling portion and a center of the guide member, and a fourth guide coupling portion positioned between the second guide coupling portion and the center of the guide member and being symmetrical to the third guide coupling portion; a first fixing bracket coupleable to the first guide coupling portion or the third guide coupling portion; and a second fixing bracket coupleable to the second guide coupling portion or the fourth guide coupling portion.

Abstract: A wireless power module includes a coil layer including a coil including a curved area, a wiring board disposed on the coil layer, and a plurality of conductive lines disposed on the wiring board. At least a portion of the conductive lines crosses the curved area within a predetermined angle range when viewed in a plane.

Abstract: An encoding/decoding apparatus and method for controlling a channel signal is disclosed, wherein the encoding apparatus may include an encoder to encode an object signal, a channel signal, and rendering information for the channel signal, and a bit stream generator to generate, as a bit stream, the encoded object signal, the encoded channel signal, and the encoded rendering information for the channel signal.

Abstract: An apparatus and a method for automatically controlling a screen brightness of an AVN system are provided to automatically change screen brightness in a user customized manner in a response to a change in illumination outside the vehicle. The apparatus include a screen brightness control module that controls such that a screen brightness of a display provided in the AVN system is automatically changed according to a change in the illumination data received from the illumination sensor, based on a default matching relationship between previously stored illumination data and screen brightness and a gain adjustment module that generates a new customized matching relationship by correcting the screen brightness matched to each illumination data based on the default matching relationship in accordance with an input of a user who adjusts to enhance or weaken the screen brightness and provides the screen brightness control module with the new customized matching relationship for screen brightness control.

Abstract: The present disclosure relates to an organic electroluminescent device comprising a light-emitting layer and a hole transport zone. By comprising a specific combination of a light-emitting layer and a hole transport zone, it is possible to provide an organic electroluminescent device having low driving voltage, high luminous efficiency and/or long lifespan properties.

Abstract: An input recognition method carried out by an electronic device implemented by a computer comprises the steps of generating a virtual grid of which the distance between lines is variable, in correspondence with at least a partial region of a display included in or connected to the electronic device; and recognizing, by using an index of the virtual grid, a position selected by a user of the electronic device in the region of the display corresponding to the virtual grid.

Abstract: Disclosed herein are an air conditioner system and a controlling method thereof. In a situation that air-conditioning systems such as air conditioners and refrigerators are installed and operated in a site, real-time operation data are acquired and the air conditioning and efficiency are calculated at the site. By comparing performance data provided by a device manufacturer and the real-time operation data, device performance is corrected for the site's installation environment. By using corrected device performance, it is possible to save building facility energy by providing optimal operation number control suitable for the installation environment.

Abstract: Disclosed are a training method for a learning model for recognizing an acoustic signal, a method of recognizing an acoustic signal using the learning model, and devices for performing the methods. The method of recognizing an acoustic signal using a learning model includes identifying an acoustic signal including an acoustic event or acoustic scene, determining an acoustic feature of the acoustic signal, dividing the determined acoustic feature for each of a plurality of frequency band intervals, and determining the acoustic event or acoustic scene included in the acoustic signal by inputting the divided acoustic features to a trained learning model.

Abstract: A semiconductor memory device in which performance is improved by reducing a wiring resistance is provided. The semiconductor memory device comprising an inter-wiring insulation film on a substrate, a first wiring pattern extending in a first direction, in the inter-wiring insulation film, a barrier insulation film that is on an upper surface of the inter-wiring insulation film, a barrier conductive pattern electrically connected to the first wiring pattern, in the barrier insulation film, a memory cell electrically connected to the barrier conductive pattern and including a selection pattern and a variable resistor pattern, and a second wiring pattern extending in a second direction intersecting the first direction, on the memory cell, wherein a width of the barrier conductive pattern in the second direction is different from a width in the second direction of a portion of the memory cell that is adjacent to the barrier conductive pattern.

Abstract: Provided are a display device and a manufacturing method thereof. The display device comprises: a substrate; a first electrode and a second electrode disposed on the substrate to be spaced apart from each other; a first insulating layer disposed on the substrate so as to cover at least a portion of the first electrode and the second electrode; and at least one first light emitting element disposed between the first electrode and the second electrode, on the first insulating layer. The first insulating layer comprises: a first sub-insulating layer comprising a first portion including a hydrophilic material and a second portion which is a region of the first insulating layer except for the first portion and includes a hydrophobic material; and a second sub-insulating layer disposed below the first sub-insulating layer, and at least a portion of the at least one first light emitting element is disposed on the first portion.

Abstract: The present invention relates to a pharmaceutical composition for the treatment of sepsis or systemic inflammatory response syndrome (SIRS) comprising mitochondria as effective ingredient. When activated macrophages and monocytes are treated with mitochondria which are effective ingredient of the pharmaceutical composition of the present invention, expression of IL-1?, TNF-? and IL-6 which are pro-inflammatory cytokines can be restored to normal levels. Furthermore, when the pharmaceutical composition of the present invention is administered to a subject suffering from sepsis, the survival rate of the subject can be remarkably increased. Therefore, the pharmaceutical composition according to the present invention can be useful for the treatment of sepsis.

Abstract: The present disclosure is related to a method to control sizes of core-shell nanoparticles comprising the steps of: manufacturing slurry by irradiating ultrasonic waves to a dispersion solution containing a reducing solvent, a carbon support, a transition metal precursor and a precious metal precursor; manufacturing a solid by filtering the manufactured slurry, followed by washing and drying; and manufacturing a nanoparticle of a transition metal core and a platinum shell by heat-treating the dried solid at a temperature of 450 to 900° C. and a pressure of 1 to 90 bar for 0.5 to 10 hours under N2 atmosphere.

Abstract: The present invention relates to an electrolytic copper foil for a secondary battery and a method of producing the same, and more particularly, to an electrolytic copper foil for a secondary battery, which has little change in a physical property of a copper foil before and after vacuum drying in a process of producing an electrolytic copper foil, thereby exhibiting excellent cycle life in a battery test at a high-density negative electrode, and preventing cracking. The electrolytic copper foil for a secondary battery is produced from a plating solution containing Total Organic Carbon (TOC), zinc, and iron by using a drum, in which a ratio of the TOC to the zinc and the iron contained in the electrolytic copper foil follows Formula 1 below: TOC/(zinc+iron)=1.3 to 1.

Abstract: A display device comprises a first electrode, a first insulating layer disposed on the first electrode, a second electrode disposed on the first insulating layer, at least a part of the second electrode facing the first electrode in a first direction, one or more first light-emitting elements disposed between the first electrode and the second electrode, the one or more first light-emitting elements extending in a direction, wherein the first insulating layer partially encompasses the outer surface of the one or more first light-emitting element, and the extending direction of at least one of the one or more first light-emitting element is parallel to the first direction.