Abstract: Disclosed is a method of fuel cell analysis. The method includes measuring at least a portion of an electrode of a fuel cell to determine a measured result. The method also includes analyzing a state of the fuel cell according to the measured result.

Abstract: An apparatus for providing operation logic of a fuel cell system may include an activation part configured to perform activation on a fuel cell, and an operating performance part configured to perform constant current operation according to the performing of activation.

Abstract: A gadget for retroreflected signal measurement is disclosed. The gadget for measuring the retroreflected signal includes a partitioning wall; a portable terminal receiving portion disposed on one surface of the partitioning wall; a biosensor receiving portion disposed on the other surface of the partitioning wall and constructed to receive a biosensor therein; a light exit channel defined in the partitioning wall and at one side thereof; and a light-receiving channel adjacent to the light exit channel and defined in the partitioning wall, wherein light passes through the light exit channel and then is reflected from the biosensor, and then is incident into the light-receiving channel.

Abstract: An electronic device according to various embodiments of the present invention may comprise: a housing comprising a first surface facing in a first direction and a second surface facing in a second direction that is opposite to the first direction, the first surface comprising an at least partially transparent part and at least one opening formed adjacent to the at least partially transparent part; a camera positioned inside the housing, the camera comprising an image sensor facing in the first direction through the at least partially transparent part of the housing; and an acoustic component arranged between the first surface and the second surface, the acoustic component comprising a vibration plate configured to generate a sound such that the same moves in at least one direction selected from the first and second directions, a first passage formed in a third direction that is substantially perpendicular to the first direction such that the generated sound passes through the same, and a second passage forme

Abstract: Disclosed are a method of training a spiking neural network computation based on a temporal coding and a system thereof. The method includes a kernel generation operation of generating a kernel computation for a log computation, a conversion recognition learning operation of converting a spike timestep using the kernel computation and one or more activation functions, a PSP computation operation of computing a sum of postsynaptic potentials (PSPs) using the converted spike timestep, and an SNN learning operation, by a spiking neural network (SNN) model, of training data using a membrane potential value depending on the sum.

Abstract: Disclosed are a spiking neural network training method based the conversion aware training and a system thereof. The spiking neural network training method includes an ANN generation operation of generating an analog artificial neural network (ANN) model and inputting variable data, a conversion aware training operation of simulating a spiking neural network (SNN) model by using one or more activation functions with respect to the analog ANN model, and an SNN generation operation of generating the SNN model by correcting parameters and weights of layers based on a result of the simulation.

Abstract: The present invention discloses an encoding apparatus using a Discrete Cosine Transform (DCT) scanning, which includes a mode selection means for selecting an optimal mode for intra prediction; an intra prediction means for performing intra prediction onto video inputted based on the mode selected in the mode selection means; a DCT and quantization means for performing DCT and quantization onto residual coefficients of a block outputted from the intra prediction means; and an entropy encoding means for performing entropy encoding onto DCT coefficients acquired from the DCT and quantization by using a scanning mode decided based on pixel similarity of the residual coefficients.

Abstract: A cylindrical secondary battery includes: an electrode assembly including a first electrode plate and a second electrode plate; a cylindrical case having a disk-shaped top portion and a side portion extending from the top portion, the cylindrical case accommodating the electrode assembly; a cathode terminal extending through the top portion and insulated therefrom; a first current collector plate electrically connected to the first electrode plate and the cathode terminal; a second current collector plate electrically connected to the second electrode plate and the side portion of the cylindrical case; a cap plate coupled to the side portion and insulated therefrom; and an insulation tape between the top portion of the cylindrical case and the first current collector plate and covering the first current collector plate.

Abstract: An embodiment of the present invention relates to a cylindrical secondary battery in which a positive electrode terminal is adhered and fixed to a cylindrical can by an insulating sheet, and thus sealing between the cylindrical can and the positive electrode terminal can be facilitated due to an increased contact area.

Abstract: Disclosed are novel compounds of Chemical Formula 1, optical isomers of the compounds, and pharmaceutically acceptable salts of the compounds or the optical isomers. The compounds, isomers, and salts exhibit excellent activity as GLP-1 receptor agonists. In particular, they, as GLP-1 receptor agonists, exhibit excellent glucose tolerance, thus having a great potential to be used as therapeutic agents for metabolic diseases. Moreover, they exhibit excellent pharmacological safety for cardiovascular systems.

Abstract: The present disclosure provides a method for preparing a polymerization initiator composition, including (a) a step of mixing water and a water-soluble initiator to prepare an aqueous initiator solution having a concentration of 1 to 10%; and (b) a step of activating the aqueous initiator solution, wherein the step of activating is performed by (b-1) a step of heat treating the aqueous initiator solution for 0.5 to 4.5 hours at a temperature of 48 to 62° C.; and (b-2) a step of treating the aqueous initiator solution to achieve pH of 1 to 7, where the steps above are performed in no particular order.

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: The present disclosure provides a composition for preparing a vinyl chloride-based polymer, including a vinyl chloride-based first seed; a vinyl chloride-based second seed; an initiator composition including a water-soluble initiator and an oil-soluble initiator; a reducing agent; and a vinyl chloride-based monomer, wherein a metal catalyst is not included in the composition, and a method for preparing a vinyl chloride-based polymer using the same.

Abstract: A method for obtaining a Fourier ptychography image using a smartphone comprises the steps of: (a) sequentially providing illumination of different angles to the sample by sequentially displaying, according to a first pattern composed of point light sources at different positions, the point light sources of the first pattern on a display of the smartphone; (b) obtaining an image for each illumination angle of the sample using a camera of the smartphone whenever illumination of different angles is provided by the point light sources of the first pattern; and (c) restoring a first Fourier ptychography image using a plurality of images for each illumination angle obtained using the camera of the smartphone.

Abstract: A method for manufacturing a phase mask and a lens-less camera module comprises the steps of: obtaining a replica mold on which an inverted phase shift pattern is formed in which a phase shift pattern of a master phase mask spaced apart from an image sensor is inverted; calculating a thickness of a phase mask disposed on the image sensor replacing the master phase mask; arranging a photocurable material for implementing the phase mask on the image sensor to a calculated thickness, placing the replica mold on an upper surface of the photocurable material, and then curing the photocurable material; and removing the replica mold from the top of the phase mask, so that the focal distance change or parallel movement does not occur depending on the position of the phase mask.

Abstract: The present disclosure relates to a method and a device for recognizing speech in a vehicle. The method for recognizing the speech in the vehicle may include collecting one or more types of information, determining information to be linked with each other for speech recognition based on an information processing priority predefined corresponding to each type of the collected information, analyzing the determined information to perform the speech recognition for a signal input through a microphone, and extracting at least one of a wake up voice or a command voice through the speech recognition to control the vehicle. Therefore, the present disclosure has an advantage of more accurately performing the speech recognition by linking collected various information in the vehicle with each other.

Abstract: A method for obtaining a Fourier ptychography image using a smartphone comprises the steps of: (a) sequentially providing illumination of different angles to the sample by sequentially displaying, according to a first pattern composed of point light sources at different positions, the point light sources of the first pattern on a display of the smartphone; (b) obtaining an image for each illumination angle of the sample using a camera of the smartphone whenever illumination of different angles is provided by the point light sources of the first pattern; and (c) restoring a first Fourier ptychography image using a plurality of images for each illumination angle obtained using the camera of the smartphone.

Abstract: An apparatus and method for manufacturing phase masks for lens-less camera comprises: a light source; a digital image mirror that receives a two-dimensional map, reflects the light irradiated from the light source with different intensities for each location and outputs reflected light; a two-dimensional map generator for generating the 2D map for adjusting the intensity of reflected light for each position such that the phase mask has a unique pattern of a different height for each position from a point spread function acquired in advance depending on the purpose of use of the phase mask; and a material holder on which a photo-curable film is disposed that is irradiated with the reflected light and cured to different depths depending on the light intensity for each position of the irradiated reflected light.

Abstract: An embodiment vehicle control system includes a display, a microphone configured to acquire a user's voice, a memory configured to store a dialog model related to a sign in a vehicle, and a processor configured to identify a question about the sign in the vehicle in the user's voice, determine a response corresponding to the question about the sign using the dialog model, and control the display to output the determined response.

Abstract: A vehicle includes a communication device configured to communicate with a terminal capable of providing a communication function; a sensor configured to receive voice of a user; a storage configured to store a user pattern related to a call pattern of the user; and a controller configured to search for at least one name candidate corresponding to input voice when receiving the input voice, determine a threshold for a confidence score of the at least one name candidate based on the user pattern, and select a name corresponding to the input voice from among the at least one name candidate based on the determined threshold.