Abstract: Disclosed is an apparatus and method for controlling step charging of a secondary battery. A charging control unit determines a SOC, an OCV and a polarization voltage of the secondary battery, determines an OCV deviation corresponding to a difference between the OCV and a predefined minimum OCV value, determines a correction factor corresponding to the polarization voltage and the OCV deviation, determines a look-up SOC by correcting the SOC according to the correction factor, determines the magnitude of a charging current corresponding to the look-up SOC, and provides the determined charging current to a charging device.

Abstract: There is provided an apparatus for diagnosing whether or not an error has occurred in battery cells, the apparatus including a voltage measurement circuit for measuring a voltage of a battery cell, a data processing circuit for calculating a target statistical value indicating a state of the battery cell based on a voltage measured by the voltage measurement circuit, and calculates a cumulative statistical value, and a diagnosis circuit that determines whether or not an error has occurred in the battery cell through a cumulative determination operation of comparing the cumulative statistical value with a cumulative reference value, and counts a number of times of cumulative error when it is determined that the error has occurred in the battery cell in the cumulative determination operation.

Abstract: In one example, a semiconductor device can comprise a substrate, a device stack, first and second internal interconnects, and an encapsulant. The substrate can comprise a first and second substrate sides opposite each other, a substrate outer sidewall between the first substrate side and the second substrate side, and a substrate inner sidewall defining a cavity between the first substrate side and the second substrate side. The device stack can be in the cavity and can comprise a first electronic device, and a second electronic device stacked on the first electronic device. The first internal interconnect can be coupled to the substrate and the device stack. The encapsulant can cover the substrate inner sidewall and the device stack and can fill the cavity. Other examples and related methods are disclosed herein.

Abstract: The present invention relates to a positive electrode active material having improved capacity characteristic and life cycle characteristic, and a method of preparing the same, and specifically, to a positive electrode active material for a lithium secondary battery, wherein the positive electrode active material comprises a compound represented by Formula 1 above and allowing reversible intercalation/deintercalation of lithium, and from a crystal structure analysis of the positive electrode active material by a Rietveld method in which space group R-3m is used in a crystal structure model on the basis of an X-ray diffraction analysis, the thickness of MO slab is 2.1275 ? or less, the thickness of inter slab is 2.59 ? or greater, and the cation mixing ratio between Li and Ni is 0.5% or less, and a method of preparing the same.

Abstract: A wireless signal spectral analysis method using a multi-task learning-based spectral analysis learning model, the wireless signal spectral analysis method may be provided.

Abstract: A method of providing intelligent software is provided. According to the present disclosure, it is possible to request an optimal AI model on the basis of a pre-trained AI model and meta information of the AI model, and it is possible to easily provide an AI model optimized for an intelligence device by responding to the request by creating a plurality of AI differentiation models from the AI model in accordance with a plurality of differentiation levels.

Abstract: Disclosed are a method and an apparatus of synthetic data generation for training an artificial intelligence model. The method includes: reading a target environmental model simulating a target environment to generate synthetic data among a plurality of environmental models simulating a plurality of actual environments, respectively; extracting an environmental feature which influences generation of data in the target environment; configuring a synthetic data generation function of a synthetic data generation simulator for the target environmental model so that the synthetic data reflects the environmental feature; and generating the synthetic data by using the synthetic data generation simulator for the target environmental model, and has an effect of being capable of generating high-quality learning synthetic data which may be used for training an artificial intelligence model.

Abstract: Provided is a method for purifying an anti-4-1BB/anti-HER2 bispecific antibody, the method of which includes carrying out affinity chromatography with a sodium acetate buffer containing a certain inorganic salt as an elution buffer. The purification method of the presently claimed subject matter increases the elution of an antibody in the intact form, thereby being able to provide an anti-4-1BB/anti-HER2 bispecific antibody in the intact form in high purity and high yield.

Abstract: The present invention relates to a naphthalimide sulfonate derivative, and a photoacid generator and a photoresist composition each comprising same and, more specifically, to a naphthalimide sulfonate derivative compound, and a photoacid generator and a photoresist composition each comprising same, wherein the compound has excellent absorbance for light of i-line (365 nm) wavelength, is greatly easy to prepare into a polymerizable composition due to very high solubility in an organic solvent, has good thermal stability, and shows a favorable acid generation rate.

Abstract: A filter for controlling a pH of purified water is disclosed. The pH-controlling filter according to an aspect of the present disclosure may include a water permeable filter having a hollow formed in a center of a cross-section from one end to the other end; a lower stopper closing a lower end of the water permeable filter, a filling unit inserted into the hollow of the water permeable filter to form an inner space, the filling unit having an inlet through which the purified water passing through the water permeable filter flows into the inner space and an outlet through which the purified water passing through the inner space flows out; and control particles filled in the inner space of the filling unit to adjust a pH of the purified water passing through the inner space of the filling unit and comprising OH group-generating particles configured to supplement the purified water passing through the inner space with OH groups.

Abstract: An apparatus for providing brain lesion information based on an image includes a magnetic resonance angiography (MRA) provider configured to provide an environment capable of displaying 3D time-of-flight magnetic resonance angiography (3D TOF MRA) using user input, a brain lesion input unit configured to generate and manage a brain lesion image, a maximum intensity projection (MIP) converter configured to configure MIP image data including at least one image frame corresponding to a projection position of the brain lesion image, a noise remover configured to remove noise of brain lesion information and to configure corrected MIP image data, from which the noise is removed, and an MRA reconfiguration unit configured to reconfigure a corrected brain lesion image by back-projecting the corrected MIP image data.

Abstract: An operating method of a server operating a digital twin built into a virtual space for a plurality of base stations and a plurality of mobile devices may be provided. The operating method according to an embodiment of the present disclosure may include: invoking a digital twin-based beamforming management service; obtaining location information about a target mobile device from among the plurality of mobile devices and a target base station corresponding to the target mobile device; searching for a plurality of paths capable of forming a beam from the target base station to the target mobile device based on the location information and spatial information of the digital twin; performing a first communication performance simulation for the plurality of paths; determining a final beamforming parameter based on a result of the first communication performance simulation; and transmitting beamforming information including the final beamforming parameter to the target base station.

Abstract: Disclosed is a method of preparing sodium-catalyzed iron-aluminum inorganic catalyst for catalyzing a hydrogenation reaction of carbon dioxide. The method of preparing sodium-catalyzed iron-aluminum inorganic catalyst includes: a first step of mixing a precipitant solution formed by dissolving a basic precipitant with a reaction solution formed by dissolving an iron (Fe) precursor material and an aluminum (Al) precursor material, thereby forming a suspension solution; a second step of aging the suspension solution; a third step of separating powder from the aged suspension solution; a fourth step of drying the separated powder and then performing a first heat treatment, thereby forming first catalyst powder; and a fifth step of adding and stirring the first catalyst powder and a sodium precursor material to water and evaporating the water and then performing a second heat treatment, thereby preparing a sodium-introduced iron-aluminum inorganic catalyst.

Abstract: Systems and methods using engineered nanofiltration layers to facilitate acceleration of palladium nanowire hydrogen sensors. The sensors include a metal-organic framework (MOF) assembled on palladium (Pd) nanowires (NWs) for highly selective and ultra-fast H2 molecule detection.

Abstract: A cooking appliance may include a casing having a cavity and an electric chamber therein, and a door configured to open and close the cavity. A guide duct having an air discharge flow path therein may be disposed in the electric chamber. A cooling fan may be disposed at the guide duct, and be configured to discharge air in the casing forward along the air discharge flow path. A lighting device may be disposed at a position spaced forward from the cooling fan toward the door. A lighting guide with a guide space having an oblong hole shape may be disposed at a center portion of the guide duct, and the lighting device may be disposed in the guide space. Accordingly, the lighting module may emit light to the center portion of the cavity to illuminate uniformly an entire internal space of the cavity. Further, the lighting module may be surrounded by the lighting guide, thereby preventing overheating of the lighting module due to high temperature discharged air flowing through the guide duct.

Abstract: A positive electrode active material for a secondary battery including: a lithium complex transition metal oxide which contains nickel (Ni) and cobalt (Co), and contains at least one selected from the group consisting of manganese (Mn) and aluminum (Al); and a composite coating portion which is formed on a surface of the lithium complex transition metal oxide is provided. The lithium complex transition metal oxide has a nickel (Ni) content of 65 mol % or more with respect to the total transition metal content, and the composite coating portion contains cobalt (Co) and boron (B), and contains at least one selected from the group consisting of lanthanum (La), titanium (Ti), and aluminum (Al).

Abstract: A display device includes: first and second display panels adjacent to each other along one direction, wherein: each of the first and second display panels includes a substrate, and a display portion on the substrate and includes a plurality of pixels including a pixel circuit layer on the substrate, at least one transistor, a display element layer on the pixel circuit layer, and at least one light emitting element emitting light; the substrate of the first display panel and the substrate of the second display panel are engaged with each other in a plan view and a cross-sectional view; the display portion of the first display panel and the display portion of the second display panel are engaged with each other in a plan view and a cross-sectional view; and a boundary between the display portion of the first display panel and the display portion of the second display panel.

Abstract: A method for preparing a positive electrode active material for a secondary battery is provided. The method includes preparing a lithium composite transition metal oxide including nickel, cobalt, and manganese (Mn), wherein the content of the nickel in the total content of the transition metal is 60 mol % or greater. The lithium composite transition metal oxide, MgF2 as a fluorine (F) coating source, and a boron (B) coating source undergoes dry mixing and heat treatment to form a coating portion on the particle surface of the lithium composite transition metal oxide. In addition, a positive electrode active material prepared as described above, is also provided.

Abstract: The present invention relates to a method of preparing a positive electrode active material precursor for a lithium secondary battery in which particle size uniformity and productivity may be improved by using three reactors, a method of preparing a positive electrode active material for a lithium secondary battery by using the above-prepared positive electrode active material precursor for a lithium secondary battery, and a positive electrode for a lithium secondary battery and a lithium secondary battery which include the above-prepared positive electrode active material for a lithium secondary battery.

Abstract: An apparatus for evaluating validity of detection of a cancer region may be provided.