Abstract: An embodiment roof assembly for a vehicle includes a roof panel including a core, an upper skin attached to a top surface of the core, and a lower skin attached to a bottom surface of the core, a face sheet disposed above the roof panel, and a foam layer interposed between the roof panel and the face sheet.

Abstract: A removable fastening system includes a rail unit located in a vehicle, an electrode portion located at the inner side of the rail unit, a fixing unit having one end inserted to be fixed to the rail unit, and a mounting unit mounted at another end of the fixing unit, wherein the fixing unit is inserted into the rail unit and has a conductive portion rotated to be brought into contact with the electrode portion.

Abstract: The present disclosure relates to a method of generating, by a terminal, an integrated graph using a distributed graph including: receiving source node information from a user; identifying, by a graph types module, a location of a graph database related to a type of a source node based on the source node information; requesting, by a graph manager module, graph data to an application corresponding to the location of the graph database; receiving the graph data from the application; and integrating, by a graph integration module, a node and an edge based on the source node and the graph data to generate the integrated graph.

Abstract: A method for determining a low voltage defect of a lithium secondary battery is provided. The method includes measuring a primary voltage of a lithium secondary battery whose formation process has been completed, transporting the lithium secondary battery, measuring temperatures to which the lithium secondary battery has been exposed during the transporting process, measuring a secondary voltage of a lithium secondary battery whose transporting has been completed, revising the secondary voltage to calculate a corrected secondary voltage based on the temperature to which the lithium secondary battery has been exposed, and comparing the primary voltage and the corrected secondary voltage to determine whether the lithium secondary battery is defective.

Abstract: Disclosed are a spinning dope for an aramid and carbon-nanotube composite fiber and a method of manufacturing an aramid and carbon-nanotube composite fiber using the same.

Abstract: A portable sterilizer according to an embodiment of the present application is capable of spraying ultra-fine chemicals, and includes a housing in which a space is formed and an injection nozzle is provided at a front end thereof, a chemical tank provided on one side of the space of the housing, a chemical feed pipe formed between the chemical tank and the injection nozzle, and a water pump which is installed on one side of the chemical supply pipe to supply the chemical to the injection nozzle through the chemical supply pipe.

Abstract: A method for determining a low voltage defect of a lithium secondary battery is provided.

Abstract: An apparatus for correcting an error of a radar sensor for a vehicle and a method thereof can correct a target measurement error of the radar sensor installed inside a bumper of the vehicle based on target information obtained from a camera image. The apparatus includes: a radar sensor that is installed inside a bumper of the vehicle to detect a target, a camera that photographs a surrounding image of the vehicle, and a controller that corrects a target detection error of the radar sensor based on target information obtained from an image photographed by the camera.

Abstract: A portable sterilizer according to an embodiment of the present application is capable of spraying ultra-fine chemicals, and includes a housing in which a space is formed and an injection nozzle is provided at a front end thereof, a chemical tank provided on one side of the space of the housing, a chemical feed pipe formed between the chemical tank and the injection nozzle, and a water pump which is installed on one side of the chemical supply pipe to supply the chemical to the injection nozzle through the chemical supply pipe.

Abstract: The present disclosure relates to a carbon nanotube fiber having improved physical properties and a method for manufacturing the same. The method according to the present disclosure comprises the steps of: spinning carbon nanotubes with a purity of 90% by weight or more to obtain a first carbon nanotube fiber; and heat-treating the first carbon nanotube fiber at 500 to 3,000° C. under an inert gas atmosphere to obtain a second carbon nanotube fiber, wherein the second carbon nanotube fiber has a density of 1.0 to 2.5 g/cm3.

Abstract: Various embodiments of the present invention relate to an electronic device comprising a wireless communication circuit, and a portable communication device.

Abstract: In a method for estimating a position of a missile, an incident angle of a signal of a radar irradiated to the moving missile is calculated. The incident angle is defined by an angle between a measurement vector indicating a direction from the radar toward the missile and a movement vector indicating a moving direction of the missile. A distance compensation value from a point on a surface of the missile to an origin point of the missile is calculated based on the calculated incident angle. A distance from the radar to the origin point of the missile is calculated based on the calculated distance compensation value and a distance from the radar to the point on the surface of the missile. A position of the missile is estimated based on a position of the radar and the calculated distance from the radar to the origin point of the missile.

Abstract: An electronic device includes a housing; a first antenna located at a first part of the housing; a second antenna located at a second part separated from the first part of the housing; a transceiver configured to generate a first signal and a second signal; a first coupler electrically connected between the first antenna and the transceiver and configured to receive the first signal from the transceiver and provide the received first signal to the first antenna; a second coupler electrically connected to the second antenna and the transceiver and configured to receive the second signal from the transceiver and provide the received second signal to the second antenna; and a control circuit operationally connected to the transceiver, wherein the control circuit is configured to determine at least one value related to gains of the first signal and the second signal based at least partially on the signals provided from the first coupler and the second coupler, determine whether the first signal has a higher gain

Abstract: Provided is a method of manufacturing a server room cooling apparatus, the method including: providing a housing; providing at least one frame in the housing; providing, on the at least one frame, a barrier wall configured to divide a space inside the housing into at least two spaces; forming a mist ejection unit configured to eject mist to an outer air supplied from outside the server room cooling apparatus, at a side of a supply unit that is formed by the barrier wall and supplies outer air to a server room; forming a filter unit configured to filter outer air supplied from outside the server room cooling apparatus, at a side of the mist ejection unit; and forming an outer air inflow unit into which outer air flows, at one side of the filter unit.

Abstract: Provided is an operating method of a memory system including a plurality of logical address groups each having a preset logical address range. The operation method may include: selecting a victim block; selecting a plurality of target blocks among empty blocks; mapping at least one logical address group of the logical address groups to each of the target blocks; determining a first logical address group including a logical address of first valid data stored in the victim block, among the logical address groups; and backing up the first valid data into a first target block mapped to the first logical address group among the target blocks.

Abstract: Provided is a carbonaceous material for a negative electrode active material additive for a lithium secondary battery, which has Dv50 of 6 ?m or less and Dn50 of 1 ?m or less. According to the carbonaceous material for a negative electrode active material additive for a lithium secondary battery of an embodiment of the present invention, since lithium ions may be rapidly adsorbed to and desorbed from a negative electrode adopting the carbonaceous material, output characteristics of a lithium secondary battery including the carbonaceous material are improved, and since a decrease in a capacity is small even when repeatedly charged and discharged, life characteristics are excellent.

Abstract: A method of correcting a target angle error of a radar sensor, the method may include recognizing a first target angle of a target through the radar sensor; recognizing a second target angle of the target through V2X communication and then calculating a target angle error between the first target angle and the second target angle; comparing the target angle error with a predetermined critical error; and correcting a phase curve of the radar sensor by applying the target angle error to the phase curve in accordance with the comparison result, and then giving a target warning using the corrected phase curve.

Abstract: An apparatus for correcting an error of a radar sensor for a vehicle and a method thereof can correct a target measurement error of the radar sensor installed inside a bumper of the vehicle based on target information obtained from a camera image. The apparatus includes: a radar sensor that is installed inside a bumper of the vehicle to detect a target, a camera that photographs a surrounding image of the vehicle, and a controller that corrects a target detection error of the radar sensor based on target information obtained from an image photographed by the camera.

Abstract: A memory system capable of efficiently managing meta data is provided. The memory system includes a non-volatile memory device for storing a plurality of map segment groups each including map segments including mapping information between at least one physical addresses and at least one logical address of a host; and a controller for loading one map segment from each of selected map segment groups among the plurality of map segment groups, and differently configuring flush data to be flushed to the non-volatile memory device in response to a program request that includes a first target logical address received from the host according to whether a target map segment corresponding to the first target logical address is in the loaded one map segment.

Abstract: Various embodiments of the present invention relate to an electronic device comprising a wireless communication circuit, and a portable communication device.