Abstract: Provided is an acoustic signal processing device for a spatially extended sound source and a method thereof. The acoustic signal processing device includes a memory configured to store instructions, and a processor electrically connected to the memory and configured to execute the instructions. When the instructions are executed by the processor, the processor performs a plurality of operations, and the plurality of operations includes transforming an object provided as a spatially extended sound source into a cuboid in a virtual reality (VR) space, obtaining coordinates of the cuboid, and determining a position of a sound source of the object based on the coordinates of the cuboid and coordinates of a user in the VR space.

Abstract: A negative electrode active material including a core, an intermediate layer on a surface of the core, and a shell layer on a surface of the intermediate layer, wherein the core includes a silicon oxide of SiOx (0<x<2); the intermediate layer includes a lithium silicate, the shell layer includes lithium fluoride (LiF) and the intermediate layer is present in an amount of 5 wt %-15 wt % based on a total weight of the negative electrode active material. Also, a method for preparing the negative electrode active material, and a negative electrode and lithium secondary battery including the same. The negative electrode active material provides excellent initial efficiency and life characteristics.

Abstract: Disclosed is a negative electrode active material which includes: secondary particles having a plurality of primary particles which include a silicon oxide composite including i) Si, ii) a silicon oxide represented by SiOx (0<x?2), and iii) a metal silicate containing Si and M, wherein M is at least one of Li and Mg; and a first carbon coating layer disposed partially or totally on the surfaces of the primary particles to interconnect and fix the primary particles; and a second carbon coating layer disposed on the surfaces of the secondary particles, wherein the second carbon coating layer has higher crystallinity as compared to the first carbon coating layer, and the primary particles have an average particle diameter (D50) of 0.1-3.5 ?m. A negative electrode including the negative electrode active material, and a lithium secondary battery including the negative electrode are also disclosed.

Abstract: The present invention relates to a method and system for screening and separating biological specimens. The screening and separating method and system provide reliable results based on information related to the types, shapes, and positions of labeled products provided by an agent for accurate screening. In addition, the information related to the types, shapes, and positions can be combined to determine objective indices for the state of a target specimen, enabling rapid selection of the target specimen. The method and system for screening and separating biological specimens according to the present invention use an agent optimized to accurately and effectively create information on the selection of a target specimen and process images based on information on images stored in a server, enabling sensitive and highly reproducible screening evaluation.

Abstract: Disclosed herein is a method for measuring the weight of a discrete entity, performed in a neural network model configured with multiple layers, the method including receiving data configured with the indices of discrete entities, converting the data into embedding vectors corresponding to respective indices through an embedding layer, generating a masked vector through element-wise multiplication between a mask vector and the embedding vector, calculating a loss using output based on the masked vector, and training the model based on the loss.

Abstract: The present invention relates to: a negative electrode active material including silicon-based composite particles containing SiOx (0<x<2) and a MgSiO3 phase, wherein the MgSiO3 phase includes a first MgSiO3 phase having an enstatite structure and a second MgSiO3 phase having a clinoenstatite structure at a weight ratio of 1:1 to 1:5; a negative electrode including the same; and a secondary battery including the negative electrode.

Abstract: An apparatus and method for pitch-shifting an audio signal with low complexity are disclosed. The method includes identifying a distance between an audio object included in the audio signal and a listener, checking whether the distance between the audio object and the listener decreases, and performing stepwise stretching pitch-shifting of repeatedly using at least one of frequency components of the audio signal when the distance between the audio object and the listener decreases.

Abstract: A negative electrode whose rapid charging performance and lifetime characteristics are excellent and a secondary battery including the negative electrode. The negative electrode includes a current collector and a negative electrode active material layer on at least one surface of the current collector. The negative electrode active material layer includes a negative electrode active material. The negative electrode active material includes uncoated artificial graphite particles consisting of secondary particles formed by agglomerating a plurality of primary particles, the primary particles have an average particle diameter (D50) of 7 ?m to 10 ?m, the secondary particles have an average particle diameter (D50) of 15 ?m to 20 ?m, and the uncoated artificial graphite particles have a crystallite size along the a-axis (La(100)) of 200 nm to 300 nm and a crystallite size along the c-axis (Lc(002)) of 50 nm to 100 nm as analyzed by XRD.

Abstract: A negative electrode active material for a lithium secondary battery, a lithium secondary battery including the same, and a method for preparing the negative electrode active material is disclosed. The negative electrode active material includes a porous carbon coating layer self-bound to a surface of a carbonaceous material. The porous carbon coating later contains porous carbon particles, and thus shows reduced resistance during lithium-ion intercalation on the surface of the carbonaceous material and provides improved surface reactivity and structural stability. This provides improved high-rate charge characteristics, while causing no deterioration of charge/discharge efficiency and life characteristics, when being used as a negative electrode active material for a lithium secondary battery. The self-bound amorphous carbon coating layer may optionally have a controlled pore structure through chemical etching.

Abstract: Provided is a negative electrode active material which includes: a silicon-based core; and an outer coating layer formed on the silicon-based core and including polyimide, wherein the polyimide comprises a fluorine-containing imide unit. The outer coating layer may be included in an amount of more than 0 wt % and 4.5 wt % or less in the negative electrode active material.

Abstract: An apparatus for measuring a vent pressure of a pouch cell includes a pouch cell accommodating an electrode assembly therein, and formed with a heat fusion part on a side thereof; a measurement unit defining therein a space for seating the pouch cell, expanding the pouch cell by a negative pressure formed in the measuring unit, and measuring a vent pressure of the pouch cell; and a negative pressure forming unit connected to the measurement unit, and forming a negative pressure inside the measurement unit.

Abstract: A negative electrode active material including a core containing SiOx (0?x<2) and a lithium-containing compound, and a shell disposed on the core and containing SiOx (0?x<2) and magnesium silicate.

Abstract: Provided is a dual structure humidifier, and more particularly, a dual structure floating-type humidifier with a noise reduction function. The dual structure humidifier includes a water tank in which a fluid is contained, a floating body which floats in the fluid in the water tank and performs a humidification operation using an ultrasonic module provided therein, a blowing fan which introduces external air into the water tank and the floating body or discharges the air in the floating body to the outside, and a water tank case which is provided to form a predetermined separation distance from the water tank and surround an outer circumference of the water tank and has air intake ports formed at one side to communicate with the blowing fan and reduce noise generated inside the water tank.

Abstract: Disclosed is a negative electrode active material which includes: a silicon oxide composite including i) Si, ii) a silicon oxide represented by SiOx (0 < x ? 2), and iii) magnesium silicate containing Si and Mg; and a carbon coating layer positioned on the surface of the silicon oxide composite and including a carbonaceous material, wherein X-ray diffractometry of the negative electrode active material shows peaks of Mg2SiO4 and MgSiO3 at the same time and shows no peak of MgO; the ratio of peak intensity, I (Mg2SiO4)/I (MgSiO3), which is intensity I (Mg2SiO4) of peaks that belong to Mg2SiO4 to intensity I (MgSiO3) of peaks that belong to MgSiO3 is smaller than 1, the peaks that belong to Mg2SiO4 are observed at 2? = 32.2 ± 0.2°, and the peaks that belong to MgSiO3 are observed at 2? = 30.9 ± 0.2°.

Abstract: A negative electrode active material including: silicon-containing composite particles including SiOx (0<x<2) and a Li compound; a carbon layer on at least a part of the surface of the silicon-containing composite particles; a surface layer including an amorphous phase on at least a part on the silicon-containing composite particles; and at least one Group 13 element and at least one Group 15 element.

Abstract: A negative electrode active material including: silicon-containing composite particles including SiOx (0<x<2) and pores; and a carbon layer on a surface of the silicon-containing composite particles and in the pores, in which the carbon layer includes a metal, the metal includes at least one selected from the group consisting of Li, Na and K, and the pores have an average diameter in a range of 2 nm to 45 nm, a negative electrode including the same, a secondary battery including the negative electrode and a method for preparing the negative electrode active material.

Abstract: A negative electrode including a negative electrode active material layer, in which the negative electrode active material layer includes a silicon-containing negative electrode active material and a conductive material, the silicon-containing negative electrode active material includes a core and a carbon layer on the core, the core includes SiOx, wherein 0<x<2 and at least one metal atom, the at least one metal atom includes at least one selected from the group consisting of Mg, Li, Al, and Ca, the silicon-containing negative electrode active material has a D5/D50 of 0.5 or more, a D5 of 3 ?m or more, and a D50 of 4 ?m or more and 11 ?m or less, and the conductive material includes single-walled carbon nanotubes, and a secondary battery including the negative electrode.

Abstract: A negative electrode active material, a negative electrode including the same, a secondary battery including the same and a method for preparing a negative electrode active material.

Abstract: A silicon-containing negative electrode active material including a core and a carbon layer disposed on the core, in which the core includes SiOx, wherein 0<x<2 and at least one metal atom, the at least one metal atom includes at least one selected from the group consisting of Mg, Li, Al and Ca, D5/D50 is 0.5 or more, D5 is 3 ?m or more, and D50 is 4 ?m or more and 11 ?m or less, a negative electrode including the same, and a secondary battery including the same.

Abstract: An electrode for batteries that does not include a metal-film-type current collector is disclosed herein. In some embodiments, the electrode comprises a composite having a core-shell structure including a core having an electrode active material, and a metal material coated on or doped in the surface of the core. A secondary battery having the electrode has increased capacity and energy density and exhibits improved lifespan characteristics.