Abstract: A method of providing a chat service in a map-based virtual space includes receiving a place selection signal based on map information and/or a motion detection signal from user terminals, determining location information and FoV information of the corresponding account in the virtual space, determining image information of a perspective view and one or more other accounts to be displayed on the corresponding user terminal, receiving a chat request from a first user terminal, receiving a result regarding whether to accept a chat in response to the chat request from a second user terminal, determining whether an account of the first user terminal and the other account of the second user terminal on the street view satisfy a preset condition, and providing the chat service between the first user terminal and the second user terminal based on whether the chat is accepted and whether the preset condition is satisfied.

Abstract: A vehicle control apparatus is provided. The vehicle control apparatus comprising: a reception unit for recognizing a plurality of events comprising a first event and a second event, and receiving information of the plurality of events and information comprising a set speed of a vehicle and a current speed of the vehicle; a determination unit for determining whether a control starting condition is satisfied; a calculation unit for calculating a reference distance for control, calculating a target speed using the reference distance for control, and modifying the target speed; and a vehicle control unit for performing control comprising acceleration and deceleration so that the vehicle travels at the target speed when the control starting condition is satisfied.

Abstract: An exemplary embodiment attempts to provide a full transmission device for wide-angle mode conversion of elastic waves which can realize mode conversion of elastic waves with high energy efficiency over a wide range of angle of incidence by a single filter. A full transmission device for wide-angle mode conversion of elastic waves includes an incidence medium where elastic waves including longitudinal waves and transverse waves enter obliquely within a preset wide angle range, a transmission medium that transmits elastic waves when the elastic waves enter the transmission medium within the wide angle range through the incidence medium, and a filter that is formed so as to satisfy a wide-angle mode conversion full-transmission condition when the filter is interposed between the incidence medium and the transmission medium, such that elastic waves entering the incidence medium within the wide angle range are completely converted without being reflected so as to be transmitted to the transmission medium.

Abstract: According to an embodiment of the present disclosure, there is provided a method of predicting a brain tissue lesion distribution, the method including: a model learning operation of learning a prediction model for predicting a brain tissue lesion distribution of a subject by using brain image data of a plurality of previous patients; an input obtaining operation of obtaining input data from brain image data of the subject; and an output operation of generating output image data including information on the lesion distribution after recanalization treatment for the subject, by using the prediction model. The prediction model includes a success prediction model that is learned by using data of patients in which recanalization treatment is successful among the plurality of previous patients, and a failure prediction model that is learned by using data of patients in which recanalization treatment fails among the plurality of previous patients.

Abstract: A fuel cell vehicle includes a battery and a cell stack including a plurality of unit cells stacked one above another. The fuel cell vehicle also includes a boost converter configured to boost and output a target voltage received from the cell stack in response to a switching signal. The fuel cell vehicle further includes a switching unit configured to be switched in response to a control signal to connect an output side of the boost converter to the battery. The fuel cell vehicle additionally includes a controller configured to generate the control signal when startup of the fuel cell vehicle is requested. The controller is also configured to vary a switching frequency of the switching signal in response to a difference between a first voltage output from the cell stack and a second voltage of the battery.

Abstract: A battery pack for a vehicle may include: a plurality of battery modules arranged on a plane; a lower case forming an accommodation space surrounding the lower and lateral portions of the plurality of battery modules; a pack cover coupled to the upper portion of the lower case so as to cover the upper portion of the accommodation space; a plurality of inner members provided in the accommodation space to separate the plurality of battery modules; and a heat blocker provided between the pack cover and the inner members so as to thermally isolate the battery modules separated by the inner members.

Abstract: A coolant connection structure includes an upper body fastened to an upper end portion of the vehicle, a lower body positioned at a lower end portion of the upper body, a floor panel formed between the upper body and the lower body, and a joint module positioned at the floor panel and fluidly connected to a coolant tank positioned at the lower body.

Abstract: A positive electrode active material precursor particle and/or a positive electrode active material particle according to one embodiment of the present disclosure include a core portion and a shell portion, the core portion includes nickel (Ni) and aluminum (Al), the shell portion includes cobalt (Co), a mol % value of the nickel (Ni) of the core portion is greater than a mol % value of nickel (Ni) of the shell portion, a mol % value of the aluminum (Al) of the core portion is greater than a mol % value of aluminum (Al) of the shell portion, and a mol % value of the cobalt (Co) of the shell portion is greater than a mol % value of cobalt (Co) of the core portion.

Abstract: There are provided a method and system for automatic augmentation of gloss-based sign language translation data. A system for automatic augmentation of sign language translation training data according to an embodiment includes: a database configured to store a sequence of sign language glosses and a sequence of spoken-language words in pairs; and an augmentation module configured to augment the pairs stored in the database. Accordingly, gloss-based training data of high quality may be acquired by performing automatic augmentation for gloss-based training data for sign language translation in an efficient method in terms of time and economic aspects, and eventually, accuracy of translation between sign language glosses and sentences may be enhanced.

Abstract: An augmented reality (AR) system includes a data generator configured to generate three-dimensional (3D) data corresponding to a press mold product, and an AR terminal configured to convert the 3D data into AR data. The AR terminal includes a data inputter configured to receive the 3D data and display information corresponding to location information of each node of the 3D data. The AR terminal also includes a data processor configured to convert the 3D data into a form of polygon mesh according to a type of form information of the 3D data and generate AR data in a form of 3D virtual model through matching with the display information. The AR terminal additionally includes a data augmentation part configured to augment and match the AR data on a real product displayed on a camera image, and augment and display the display information for each node, through a user interface (UI).

Abstract: A positive electrode active material precursor particle and/or a positive electrode active material particle according to one embodiment of the present disclosure include a core portion and a shell portion, the core portion includes nickel (Ni) and zirconium (Zr), the shell portion includes cobalt (Co), a mol % value of the nickel (Ni) of the core portion is greater than a mol % value of nickel (Ni) of the shell portion, a mol % value of the zirconium (Zr) of the core portion is greater than a mol % value of zirconium (Zr) of the shell portion, and a mol % value of the cobalt (Co) of the shell portion is greater than a mol % value of cobalt (Co) of the core portion.

Abstract: A semiconductor device may include a gate structure including insulating layers and conductive layers alternately stacked, a channel layer passing through the gate structure, an insulating core disposed in the channel layer, and a capping layer including a capping pattern disposed in the channel layer and a capping liner disposed between the capping pattern and the insulating core and extending between the channel layer and the capping pattern, wherein the capping liner and the capping pattern may include impurities having different concentrations.

Abstract: A polarizing plate and an optical display apparatus are disclosed. A polarizing plate includes a polarizer and a protective layer on at least one surface of the polarizer, and the polarizer includes a polyvinyl alcohol film containing a dichroic substance and contains zinc cations and potassium cations, and the polarizing plate has a value of 0.1 or less, as calculated according to Equation 1.

Abstract: The present disclosure relates to a composition for improving exercise performance, or preventing, ameliorating or treating muscle diseases, the composition containing a gypenoside compounds as an active ingredient. A composition of the present disclosure, which contains a gypenoside compound as an active ingredient, has an excellent effect in improving exercise performance and enhancing physical strength and, thus, is expected to be very useful in the field of pharmaceuticals or functional foods.

Abstract: Various aspects of the present disclosure provide a semiconductor device, for example comprising a finger print sensor, and a method for manufacturing thereof. Various aspects of the present disclosure may, for example, provide an ultra-slim finger print sensor having a thickness of 500 ?m or less that does not include a separate printed circuit board (PCB), and a method for manufacturing thereof.

Abstract: In a method for ameliorating or treating a respiratory disease, a composition including a Lysimachia mauritiana extract as effective component is administered to a subject in need thereof. Since the Lysimachia mauritiana extract is effective in reducing the production amount of the chemokine RANTES, an inflammatory mediator, from bronchial epithelial cells, which are respiratory cells, the composition can be advantageously used as a functional health food or medicine for respiratory diseases including asthma or chronic obstructive pulmonary disease (COPD).

Abstract: Disclosed herein are a microelectrode chip and a method for differentiating neural stem cells into neurons using same. The microelectrode chip can efficiently differentiate neural stem cells into neurons, thereby enabling the production of a large quantity of functional neurons through the differentiation of patient-specific neural stem cells. This facilitates quality-controlled production of neurons and can be widely used in various fields, including platforms for screening neural regeneration candidates and research into treatments for various degenerative neurological diseases.

Abstract: A method for collateral circulation assessment, using dynamic MRI images, includes the steps of: receiving dynamic perfusion MRI images of a subject by an analysis device; extracting arterial phase images, capillary phase images, and venous phase images from the dynamic perfusion MRI images by the analysis device; inputting the arterial phase images, capillary phase images, and venous phase images into pre-trained, deep learning models, respectively, to calculate a plurality of collateral circulation prediction probability values by the analysis device; and conducting a final collateral circulation assessment for the subject, using the plurality of collateral circulation prediction probability values by the analysis device.

Abstract: Disclosed is an acoustic matching member comprising matching pattern to determine an impedance of the acoustic matching member and a phase change of the acoustic matching member defined as the product of a wave number and thickness of the acoustic matching member, which satisfies the impedance and the phase change matching conditions so that 90% or more of an ultrasound may be transmitted through a barrier located between an incident medium and a target medium.

Abstract: A DC-DC converter includes: a master converter configured to operate to generate a panel power voltage based on an input voltage regardless of a panel current, and a slave converter configured to operate to generate the panel power voltage with the master converter based on the input voltage when the panel current is greater than a reference current. The master converter and the slave converter are connected to a first inductor.