Abstract: A positive electrode active material is provided, including a lithium transition metal oxide containing nickel (Ni), cobalt (Co), and manganese (Mn), wherein the lithium transition metal oxide has 60 mol % or more nickel (Ni) with respect the total number of moles of transition metal except lithium, and is doped with at least any one doping element selected from the group consisting of B, Zr, Mg, Ti, Sr, W, and Al. The positive electrode active material has an average particle diameter (D50) of 4 ?m to 10 ?m after rolling at a rolling density of 3.0 g/cm3 to 3.3 g/cm3 and has the form of a single particle. A method of preparing the positive electrode active material, a positive electrode including the positive electrode active material, and a lithium secondary battery are also provided.

Abstract: There is provided a communication device. The communication device may comprise one or more processors; a communication interface; and a memory that stores a computer program executed by the one or more processors, wherein the computer program includes instructions for operations of: forming a general security channel according to a first transport layer security (TLS) protocol that does not support a post-quantum cryptography algorithm with another communication device; forming a communication channel of an application layer (L7) with another communication device through the general security channel; forming a quantum security channel by performing a handshake procedure according to a second TLS protocol that supports the post-quantum cryptography algorithm with another communication device through the communication channel; and communicating with another communication device through the quantum security channel.

Abstract: The present invention relates to a magnetic-field generating device for a precision procedure and, more specifically, to a magnetic-field generating device for a precision procedure, in which, by extending a magnetic field generated from a magnetic coil to the upper side to extend the area of the magnetic field, a procedural robot that is inserted into a patient's body can be safely and precisely moved up to a target position by using the magnetic field. The magnetic-field generating device for a precision procedure, according to an embodiment of the present invention for solving the problem described above, comprises: a moving unit configured to be movable; a first magnetic-field generating unit installed in a moving enclosure; a second magnetic-field generating unit that generates a magnetic field so as to overlap the area of the magnetic field generated by the first magnetic-field generating unit.

Abstract: A motion feedback method is disclosed. The method includes: acquiring a frame in which a scene of the motion performed by a user is captured through a camera; acquiring motion data of the user by analyzing the captured frame; acquiring pressure data measured in response to the user's motion through a pressure sensor; generating comparison target data by normalizing the motion data and the pressure data so as to correspond to pre-prepared reference data according to the expert's motion; and comparing the reference data and the comparison target data to generate feedback data for the user's motion, and outputting the generated feedback data.

Abstract: An apparatus for cleaning a metal filter comprises a cleaning bath having a predetermined size and connected to a cleaning solution tank, a jig which is vertically elevatable and horizontally slidable in the cleaning bath and to which the metal filter is fixed, a nozzle mounted so that a discharge hole thereof is faced upward in the cleaning bath, and a controller which controls supply and blocking of a cleaning solution from the cleaning solution tank to the cleaning bath, controls supply and blocking of compressed air or the water to the nozzle, controls movement of the jig, and controls filling or discharging of the water into/from the cleaning bath. The controller controls the movement of the jig and selectively controls the supply and blocking of the water, the cleaning solution, and the compressed air, and the draining of the cleaning bath according to predetermined logic.

Abstract: A cleaning method according to the present invention comprises mounting the metal filter on a jig that is vertically elevatable and horizontally slidable in a cleaning bath so that the opening is faced downward, descending the jig so that a first nozzle installed in the cleaning bath enters the opening, injecting a predetermined amount of water and a cleaning solution into the cleaning bath so that the metal filter is immersed, spraying compressed air through the first nozzle to discharge bubbles of the compressed air toward an inner surface of the metal filter, draining the cleaning bath, spraying water through a second nozzle to remove the cleaning solution from the metal filter, and spraying the compressed air through the first nozzle to dry the metal filter. An apparatus for cleaning a metal filter is also disclosed.

Abstract: The present invention provides a positive electrode active material precursor having a uniform particle size distribution and a method of preparing the same, and, specifically, provides a positive electrode active material precursor represented by Formula 1, wherein a percentage of fine powder with an average particle diameter (D50) of 1 ?m or less generated when the positive electrode active material precursor is rolled at 2.5 kgf/cm2 is less than 1%, and an aspect ratio is 0.93 or more, and a method of preparing the positive electrode active material precursor. [NixCOyM1zM2w](OH)2??[Formula 1] In Formula 1, 0.55?x<1, 0<y?0.5, 0<z?0.5, and 0?w?0.1, M1 includes at least one selected from the group consisting of Mn and Al, and M2 includes at least one selected from the group consisting of Zr, B, W, Mo, Cr, Nb, Mg, Hf, Ta, La, Ti, Sr, Ba, Ce, F, P, S, and Y.

Abstract: present invention relates to: a composition for promoting neurogenesis, containing extracellular vesicles prepared by a novel preparation method and derived from three-dimensional spheroid-type cell aggregate; and a neurogenesis promotion method. Extracellular vesicles prepared by a novel preparation method, of the present invention, can improve neuroplasticity by inducing neurogenesis, neuronal differentiation or neural circuit restoration, and thus can be effectively used in the treatment of various diseases requiring neurogenesis.

Abstract: The present invention relates to a composition, for freeze-dry protecting extracellular vesicles, capable of preserving the function and characteristics of extracellular vesicles, and an extracellular vesicle freeze-drying method using same. Trehalose and sucrose of the present invention are added to an extracellular vesicle freeze-drying process to solve the problems of crystal growth and redissolution capacity degradation, which are problems in an existing freeze-dry protective agent, and also maintain the unique marker, functional factor expressions and therapeutic effects of the extracellular vesicles, and thus may be variously utilized for producing various therapeutic agents using extracellular vesicles.

Abstract: Provided is a method of transmitting an anisochronous packet between devices in a time-sensitive wireless network. The method includes determining whether a whole packet to be transmitted is transmittable within a residual time of a contention period (CP), when the whole packet to be transmitted is not transmittable within the residual time of the CP, segmenting the packet to be transmitted into packet fragments with a length which is transmittable within the residual time of the CP, adding packet fragment information to the packet fragments, and transmitting one of the packet fragments within the residual time of the CP.

Abstract: A method for preparing a positive electrode active material precursor includes preparing a metal aqueous solution including a nickel raw material, a cobalt raw material, and a manganese raw material (step 1); adding the metal aqueous solution, an ammonium cation complex forming agent, and a basic aqueous solution into a reactor, co-precipitating the mixture at pH 11 to less than pH 12 to form nuclei of first positive electrode active material precursor particles and growing the nuclei (step 2); adjusting input amount of the basic aqueous solution to increase the pH in the reactor to a range of 0.8 to 1.5 compared to that of step 2; and adjusting input amount of the basic aqueous solution to change the pH in the reactor to pH 11 to less than pH 12 (step 4). A positive electrode active material precursor prepared by the above preparation method has an improved packing density.

Abstract: A positive electrode active material precursor having a uniform particle size distribution and represented by Formula 1, wherein a percentage of fine powder with an average particle diameter (D50) of 1 ?m or less is generated when the positive electrode active material precursor is rolled at 2.5 kgf/cm2 is less than 1%, and an aspect ratio is 0.93 or more, and a method of preparing the positive electrode active material precursor [NixCoyM1zM2w](OH)2 ??[Formula 1] in Formula 1, 0.5?x<1, 0<y?0.5, 0<z?0.5, and 0?w?0.1, M1 includes at least one selected from the group consisting of Mn and Al, and M2 includes at least one selected from the group consisting of Zr, B, W, Mo, Cr, Nb, Mg, Hf, Ta, La, Ti, Sr, Ba, Ce, F, P, S, and Y. A method of preparing the positive electrode active material precursor is also provided.

Abstract: Provided is a communication method and an electronic device performing the communication method. The communication method includes establishing a wireless connection for transmission of data, generating a medium access control (MAC) frame including a header formed only of a frame control field based on a type of the data, and transmitting the MAC frame including the data.

Abstract: An operation method of an access point (AP) and a terminal, in a wireless time sensitive network (WTSN), may comprise: receiving, by an AP, an uplink frame from a first terminal; generating compensation indication information for compensation to be performed in the first terminal according to channel information between the first terminal and the AP estimated based on the uplink frame; transmitting the compensation indication information to the first terminal through a downlink frame; and performing, by the first terminal, the compensation based on the compensation indication message transmitted through the downlink frame.

Abstract: The present invention relates to: a method in which extracellular vesicles with improved therapeutic efficacy are produced from a three-dimensional spheroid-type cell aggregate produced using a microwell having a particular structure; and extracellular vesicles produced by the production method. When the method for producing extracellular vesicles, according to the present invention, is used, extracellular vesicles having enhanced efficacy can be mass-produced, and the produced extracellular vesicles include higher levels of various efficiency factors than existing extracellular vesicles and exhibit uniform characteristics without difference between donors, and thus can be used for various purposes in the medical industry.

Abstract: An integrated circuit chip includes; a package substrate including a first signal ball, a first semiconductor chip on the package substrate, a second semiconductor chip on the first semiconductor chip, a first bump disposed between the package substrate and the first semiconductor chip and electrically connected to the first signal ball, and a second bump disposed between the first semiconductor chip and the second semiconductor chip and electrically connected to the first signal ball, wherein during a first mode, the first signal ball receives a signal from the first semiconductor chip through the first bump and receives a signal from the second semiconductor chip through the second bump.

Abstract: Provided are a lamp apparatus of a vehicle and a control method thereof. The lamp apparatus includes: a first integrated lamp installed at either the front or rear of a vehicle and having a plurality of lamps, one or more of which being turned on according to a lighting mode; a second integrated lamp installed at a position different from the installation position of the first integrated lamp and having a plurality of lamps, one or more of which being turned on; a travel direction input unit that receives a travel direction; a driving signal input unit that receives driving signals for turning on and off the lamps; and a lamp control unit that receives the travel direction to set the lighting modes of the first and second integrated lamps, and drives one or more of the plurality of lamps included in each of them.

Abstract: The present invention relates to a method and apparatus for radio communication of a time sensitive network. The method includes dividing, by the first node, a frame into a downlink section and an uplink section, transmitting, by the first node, downlink data to at least one second node in units of slots in the downlink section, and receiving, by the first node, uplink data from the at least one second node in units of slots in the uplink period.

Abstract: The present invention provides a cell culture apparatus. A cell culture apparatus according to one embodiment of the present invention is a cell culture apparatus for culturing a cell to form the cell into a three-dimensional spheroid. The cell culture apparatus may comprise: a plate; and a well which is arranged, in plural, on one side of the plate at predetermined intervals, has cells cultured inside, and has a micropattern disposed on the inner surface such that the inner surface and the cells are spaced apart from each other.

Abstract: A lamp system for traffic lane indication using a navigation link may include a multi-function sensor sensing an environment and a line in front of a host vehicle, a line lamp generating and outputting a prediction line at a location corresponding to a line of a road, a navigation device providing location information of the host vehicle, and a vehicle controller predicting a forward line based on a line sensed by the multi-function sensor, and the location information of the host vehicle provided by the navigation device and controlling the line lamp to output the prediction line to follow the predicted forward line.