Abstract: Provided are an artificial intelligence (AI) learning method and system and an answer relay method and system using an AI. According to an AI learning method, an AI may transmit a question to users through a messaging service and may acquire learning data for the AI through reactions of the user to the transmitted question.

Abstract: A camera module according to an embodiment of the present invention includes: a lens group; a lens support unit for accommodating the lens group; a magnet arranged on the outer surface of the lens support unit; a yoke portion spaced apart from the magnet and arranged to face the magnet; and a coil arranged on the yoke portion so as to be spaced apart from and to face the magnet between the magnet and the yoke portion, wherein the lens group, the lens support unit, and the magnet move together along an optical axis according to a current applied to the coil, the yoke portion includes a first yoke and a second yoke arranged on the first yoke, the second yoke is arranged between the first yoke and the coil, and magnetism of the first yoke is stronger than that of the second yoke.

Abstract: A memory system includes: a plurality of memory devices; a plurality of cores suitable for controlling the plurality of memory devices, respectively; and a controller including: a host interface layer for providing any one of the cores with a request of a host based on mapping between logical addresses and the cores, a remap manager for changing the mapping between the logical addresses and the cores in response to a trigger, a data swapper for swapping data between the plurality of memory devices based on the changed mapping, and a state manager for determining a state of the memory system depending on whether the data swapper is swapping the data or has completed swapping the data, and providing the remap manager with the trigger based on the state of the memory system and a difference in a degree of wear between the plurality of memory devices.

Abstract: Provided are an artificial intelligence (AI) learning method and system and an answer relay method and system using an AI. According to an AI learning method, an AI may transmit a question to users through a messaging service and may acquire learning data for the AI through reactions of the user to the transmitted question.

Abstract: A query processing method may include receiving a query based on an utterance of a user and a context associated with the user; analyzing an intent of the user for the query based on a natural language understanding (NLU) for the query; and in response to the intent of the user being undetermined through the analyzing, predicting the intent of the user using a deep learning based probabilistic model having the query and the context as an input.

Abstract: A method, a computer system, a server, and a non-transitory computer-readable storage medium for providing a search service are provided. The method of providing the search service includes: executing the search service provided through a chatroom associated with a messenger application; and, based on a first search term input for the search service, displaying, on a search entry area, first search results corresponding to the first search term and at least one autocomplete search term of the first search term.

Abstract: A start control system of a fuel cell includes: a fuel cell configured to generate power upon receiving air and fuel; an air supply system configured to supply air to a cathode of the fuel cell through an air supply line; a fuel supply system configured to supply fuel to an anode of the fuel cell through a fuel supply line that re-circulates fuel discharged from an outlet of the anode of the fuel cell to an inlet of the anode to supply fuel; an air controller configured to control the air supply system such that air flowing into the air supply line bypasses the cathode of the fuel cell when a start ON signal is input; and a fuel controller configured to supply new fuel to the fuel supply line and to control the fuel supply system to purge fuel of the fuel supply line.

Abstract: Proposed is a mask inserted into a nasal cavity, and more particularly, to a nose mask equipped with a filter that can be inserted into a nose to filter various fine dust contained in external air that is inhaled into the nose during respiration, and provide antibacterial and far-infrared emitting effects to improve health of a respiratory tract.

Abstract: A method of assessing neurotoxicity of nanoparticles, includes: preparing a tissue or cell sample of mammal exposed to the nanoparticles; analyzing at least one polyamine metabolite selected from the group consisting of putrescine, N1-acetylspermidine, N8-acetylspermidine, N1-acetylspermine and spermine in the sample; and comparing expression degree of the polyamine metabolite with that of a control.

Abstract: A memory controller controls a memory device including memory blocks, and can equalize wear levels of cores for controlling memory devices. The memory controller includes: cores for controlling the zones; a reset information controller for generating reset count values representing a number of reset requests input with respect to the zones, in response to a reset request, and generating reset count sum values obtained by summing reset count values of zones controlled by each of the cores; and a wear level manager for controlling the cores such that a core that is different from a first core having a highest reset count sum value from among the cores controls some of zones controlled by the first core according to whether a difference value between the highest reset count sum value and a lowest reset count sum value from among the reset count sum values exceeds a threshold difference value.

Abstract: A memory system includes: a plurality of memory devices; a plurality of cores suitable for controlling the plurality of memory devices, respectively; and a controller including: a host interface layer for providing any one of the cores with a request of a host based on mapping between logical addresses and the cores, a remap manager for changing the mapping between the logical addresses and the cores in response to a trigger, a data swapper for swapping data between the plurality of memory devices based on the changed mapping, and a state manager for determining a state of the memory system depending on whether the data swapper is swapping the data or has completed swapping the data, and providing the remap manager with the trigger based on the state of the memory system and a difference in a degree of wear between the plurality of memory devices.

Abstract: A megasonic cleaner includes a water tank that includes a pair of opposite inner walls and a bottom wall connected thereto, and that accommodates a fluid therein; a plurality of supporting units arranged in the water tank at predetermined positions that support a wafer; and at least one transducer arranged on the bottom wall that transmits energy in the form of waves into the fluid, where each of the opposite inner walls has a first protrusion that protrudes into an internal space of the water tank, the first protrusion being spaced above the bottom wall and positioned at an height that is greater than or equal to a height of the centers of the plurality of supporting units.

Abstract: A method of preparing a polyvinyl alcohol nanofiber membrane includes a material for controlling cell specific adhesion, and a nanofiber membrane that can maintain cellular functions such as cell activity and growth is prepared by adding aqueous solutions containing a polyacrylic acid and a glutaraldehyde crosslinking agent in a polyvinyl alcohol and materials capable of enhancing or regulating cell adhesion, electrospinning, treating with hydrochloric acid vapor and dimethylformaldehyde solvent and treating with sodium hydroxide to control the cell adhesion.

Abstract: A query processing method may include receiving a query based on an utterance of a user and a context associated with the user; analyzing an intent of the user for the query based on a natural language understanding (NLU) for the query; and in response to the intent of the user being undetermined through the analyzing, predicting the intent of the user using a deep learning based probabilistic model having the query and the context as an input.

Abstract: The present invention relates to a nasal cavity insertion type mask, and the purpose of the present invention is to provide a nasal cavity insertion type mask for filtering various kinds of fine dust contained in external air inhaled through the nose and preventing a respiratory disease by improving an antibacterial effect inside the nasal cavity, when the mask is inserted into the nose and breathing occurs, and the mask inserted into the nasal cavity is configured so as not to be separated from the naval cavity, and is configured to maintain filtering performance and enable an economical use thereof since only a filter can be replaced.

Abstract: A method of assessing neurotoxicity of nanoparticles, includes: preparing a tissue or cell sample of mammal exposed to the nanoparticles; analyzing at least one polyamine metabolite selected from the group consisting of putrescine, N1-acetylspermidine, N8-acetylspermidine, N1-acetylspermine and spermine in the sample; and comparing expression degree of the polyamine metabolite with that of a control.

Abstract: A megasonic cleaner includes a water tank that includes a pair of opposite inner walls and a bottom wall connected thereto, and that accommodates a fluid therein; a plurality of supporting units arranged in the water tank at predetermined positions that support a wafer; and at least one transducer arranged on the bottom wall that transmits energy in the form of waves into the fluid, where each of the opposite inner walls has a first protrusion that protrudes into an internal space of the water tank, the first protrusion being spaced above the bottom wall and positioned at an height that is greater than or equal to a height of the centers of the plurality of supporting units.

Abstract: Provided are a culture medium of an adipose-derived stem cell, a method for preparing the same, and a composition for promoting hair growth, in which the composition includes the culture medium. The adipose-derived stem cell (ADSC-T) according to the present invention exhibits long lifespan, improved cell proliferation rate, and extended proliferation period, as compared with a primary adipose-derived stem cell (ADSC), and thus, the adipose-derived stem cell (ADSC-T) can be usefully used for the study about the adipose-derived stem cell and the mass production of the culture medium of the adipose-derived stem cell. In addition, according to the present invention, the culture medium of the adipose-derived stem cell (ADSC-T) that expresses a T antigen of SV40 exhibits excellent hair growth effectiveness and can be usefully used as a raw material for the hair loss prevention and hair growing agents.

Abstract: The present invention relates to a nasal cavity insertion type mask, and the purpose of the present invention is to provide a nasal cavity insertion type mask for filtering various kinds of fine dust contained in external air inhaled through the nose and preventing a respiratory disease by improving an antibacterial effect inside the nasal cavity, when the mask is inserted into the nose and breathing occurs, and the mask inserted into the nasal cavity is configured so as not to be separated from the naval cavity, and is configured to maintain filtering performance and enable an economical use thereof since only a filter can be replaced.