Abstract: A redispersible polymer powder composition includes at least one solvent selected from a process oil and an organic solvent, and a vinylacetate-ethylene (VAE)-based redispersible polymer powder pre-swelled by the solvent. The swelling ratio of the vinylacetate-ethylene (VAE)-based redispersible polymer powder exceeds 55%, measured by the equation swelling ratio (%)=[(B?A)/A]×100, where A is the initial mass of the vinylacetate-ethylene (VAE)-based redispersible polymer powder before adding the solvent, and B is the swelled mass of the vinylacetate-ethylene (VAE)-based redispersible polymer powder after adding the solvent and stirring at 300 rpm at room temperature (20° C.) for 30 minutes provided that the mixing ratio of the vinylacetate-ethylene (VAE)-based redispersible polymer powder and the solvent is 1:1 by weight.

Abstract: Discussed is a method for managing a battery that includes a plurality of battery cells, the method including a reference charging power limit setting operation of setting a referential predetermined charging power limit, and a real-time charging power limit setting operation of calculating a real-time charging power limit in real-time according to a real-time voltage of the battery and setting a real-time charging power limit of the battery. The real-time voltage of the battery is determined based on a voltage of one battery cell among the plurality of battery cells.

Abstract: Discussed is a method for managing a battery that includes a plurality of battery cells, the method being part of a control strategy programmed into a module battery management system (MBMS), the method includes a reference discharging power limit setting operation, via the MBMS, of setting a referential predetermined discharging power limit, a real-time discharging power limit setting operation, via the MBMS, of setting a real-time discharging power limit of the battery by reducing the reference predetermined discharging power limit according to a real-time voltage of the battery.

Abstract: A method and an apparatus for a messaging service are disclosed. A method of operating a server that provides a reserved message function interlinked with an app for a messaging service includes identifying a reserved message scheduled to be sent, determining whether a chat room corresponding to a destination of sending the identified reserved message is valid, and sending the identified reserved message through the chat room.

Abstract: A method for setting a charging power limit of a battery when charging the battery, according to an embodiment of the present invention, may include a reference charging power limit setting step in which a referential predetermined charging power limit is set, a real-time charging power limit calculation step in which a real-time charging power limit is calculated in real time according to a current voltage of the battery, a real-time charging power limit setting step in which a charging power limit of the battery is set to the real-time charging power limit calculated in the real-time charging power limit calculation step, and a charging power limit restoring step in which the real-time charging power limit set in the real-time charging power limit setting step is restored to the referential predetermined charging power limit.

Abstract: A chemical etching method using a metal catalyst is provided that prevents deterioration of device performance by preventing the formation of deep-level impurities inside silicon. The etching method comprises forming a metal catalyst containing nickel silicide on a silicon substrate, and selectively etching the silicon substrate in contact with the metal catalyst through chemical etching of the metal catalyst.

Abstract: This disclosure relates to a connector comprising a first RF contact; a second RF contact spaced apart from the first RF contact in a first axis direction; an insulation part; and a cover shell, wherein the first RF contact includes a (1-1)th RF linker member for connecting with an RF contact of the other connector; a (1-2)th RF linker member spaced apart from the (1-1)th RF linker member on the basis of a second axis direction perpendicular to the first; and a first RF linker member arranged between the (1-1)th RF linker member and the (1-2)th RF linker member on the basis of the second axis direction, the insulation part includes a first RF inspection window arranged between the (1-1)th RF linker member and the (1-2)th RF linker member on the basis of the second axis direction, and the first RF linker member is exposed through the first RF inspection window.

Abstract: A battery bank control device is provided for setting a power limit value of a battery bank in which a plurality of battery racks (BRs) are connected in parallel. The device includes: a voltage measurement unit measuring a voltage of each BR of the plurality of BRs; a first power limit calculation unit calculating a first power limit value according to a state of charge (SOC) calculated based on the voltage of each BR with respect to each BR; a capacity ratio calculation unit calculating a capacity ratio of each BR based on capacity information of the plurality of BRs; a second power limit calculation unit calculating a second power limit value using the capacity ratio and the first power limit value of each BR; and a battery bank power limit calculation unit calculating a battery bank power limit value using the second power limit value of each BR.

Abstract: An asphalt binder includes an asphalt and an adhesion promoter composition. The adhesion promoter composition includes a vinyl acetate-ethylene (VAE)-based redispersible polymer and a wetting agent. The wetting agent includes at least one selected from the group consisting of: polyethylene glycol phenyl ether, polyethylene glycol higher alkyl, ether dialkyl sulfosuccinate, alkyl amine, alcohol amine, polyethyleneimine, and sorbitan aliphatic ethylene oxide adduct. Further, the wetting agent is included in an amount ranging from 0.5 to 45 percent by weight (wt %) with respect to the total weight of the adhesion promoter composition.

Abstract: A method and apparatus for a messaging service are provided. An operating method of a server providing an assistant function linked with an application for a messaging service includes monitoring an execution of the application of a terminal logging in with a user account subscribing to the messaging service, determining whether a briefing execution condition for the assistant function is satisfied based on a result of the monitoring, identifying briefing targets from records generated based on an execution of the assistant function of the terminal based on a result of the determining, and transmitting a briefing message to notify the number of the identified briefing targets to the terminal.

Abstract: A method and an apparatus for a messaging service are disclosed. A method of operating a server that provides a reserved message function interlinked with an app for a messaging service includes identifying a reserved message scheduled to be sent, determining whether a chat room corresponding to a destination of sending the identified reserved message is valid, and sending the identified reserved message through the chat room.

Abstract: A method and apparatus for a messaging service are provided. An operating method of a terminal on which an application for a messaging service is installed includes switching an input mode of a chat interface to an assistant mode to call an assistant function, receiving a call for the assistant function, and displaying an assistant interface corresponding to the called assistant function.

Abstract: A method and an apparatus for a messaging service are disclosed. A method of operating a search server interlinked with a messaging service includes receiving an immediate sharing request of a search result for a search term, obtaining identification information of a search result page corresponding to the search term, obtaining rendering information of the search result page corresponding to the identification information, and generating the rendering information of the search result page as a message transmitted through the chat interface.

Abstract: A carrier tape hole processing device using laser drilling is provided. The carrier tape hole processing device includes a carrier tape formed in a band shape, a work unit configured to move the carrier tape while supporting the carrier tape, a laser drilling module disposed above the work unit and configured to irradiate a laser beam to the carrier tape placed on the work unit, a position recognition unit configured to detect a position and a moving speed of the carrier tape placed on the work unit, and a control unit configured to adjust a position of the laser beam irradiated by the laser drilling module. The control unit adjusts an irradiation position of the laser beam such that the laser beam follows the carrier tape according to the moving speed of the carrier tape detected by the position recognition unit.

Abstract: Discussed is a method for managing a battery that includes a plurality of battery cells, the method including a reference charging power limit setting operation of setting a referential predetermined charging power limit, and a real-time charging power limit setting operation of calculating a real-time charging power limit in real-time according to a real-time voltage of the battery and setting a real-time charging power limit of the battery. The real-time voltage of the battery is determined based on a voltage of one battery cell among the plurality of battery cells.

Abstract: A method for setting a charging power limit of a battery when charging the battery, according to an embodiment of the present invention, may include a reference charging power limit setting step in which a referential predetermined charging power limit is set, a real-time charging power limit calculation step in which a real-time charging power limit is calculated in real time according to a current voltage of the battery, a real-time charging power limit setting step in which a charging power limit of the battery is set to the real-time charging power limit calculated in the real-time charging power limit calculation step, and a charging power limit restoring step in which the real-time charging power limit set in the real-time charging power limit setting step is restored to the referential predetermined charging power limit.

Abstract: A method for setting a charging power limit of a battery when charging the battery, including a reference charging power limit setting step of setting a referential predetermined charging power limit, a real-time charging power limit calculation step of calculating a real-time charging power limit in real-time according to a real-time voltage of the battery, a real-time charging power limit setting step of setting a charging power limit of the battery to the real-time charging power limit calculated in the real-time charging power limit calculation step, and a charging power limit restoring step of restoring the real-time charging power limit set in the real-time charging power limit setting step to the referential predetermined charging power limit.