Abstract: A method and system for determining acoustic emission (AE) parameters of rock based on moment tensor analysis. The method includes: constructing, according to macroscopic mechanical parameters, a numerical model of a rock specimen to be tested; loading the numerical model through particle flow code software to simulate a failure process of the rock specimen to be tested, and identifying fracturing time and positions of microcracks when the PFC software loads the numerical model; determining, when the PFC software loads the numerical model, if rock grains of two sequentially generated microcracks include common rock grains, and an interval for generating the two microcracks is less than duration time of a present AE event, the two microcracks as a same AE event; taking geometric centers of all microcracks within a spatial range of an AE event as source positions of the corresponding AE event; and determining AE parameters of the AE event.

Abstract: By providing propellers for vertical ascent and descent and for horizontal flight, and a blade for horizontal flight, it is possible to obtain an aerial vehicle capable of high speed horizontal flight and capable of flying a long distance.

Abstract: A voltage indicator includes a polypeptide sequence comprising a voltage-sensitive opsin domain and a capture protein domain arranged and disposed to capture a fluorescent dye ligand. When the fluorescent dye ligand is captured and the voltage indicator is bound to a cell membrane, an increase in voltage across the cell membrane causes an increase in fluorescent emission.

Abstract: An image decoding method is disclosed in the present specification. An image decoding method according to the present invention may include: determining a prediction mode of a current block as IBC (Intra Block Copy) mode, deriving a candidate list for deriving a block vector of the current block and deriving a block vector of the current block by using the candidate list, wherein the candidate list is derived based on a size of the current block.

Abstract: Disclosed herein are an apparatus and method for virtual device mirroring between edges. An edge server includes memory configured to store at least one program and a processor configured to execute the program, wherein the program is configured to create a virtual device based on specification information of an actual device and provide the specification information used to create the virtual device in response to a request received from an additional edge server, or acquire specification information used to create a virtual device of the additional edge server in response to a request of the actual device and create a virtual device based on the acquired specification information, wherein the virtual device synchronizes data with the actual device and the virtual device of the additional edge server in real time.

Abstract: A method for generating a visual representation of an environment based on a point cloud includes hierarchically processing the point cloud with different granularity levels to generate multiple groups of primitives and multiple sets of points. The method also includes generating a group of intermediate sets associated with the point cloud, each intermediate set associated with one of the multiple groups of primitives and one of the multiple sets of points, having a same granularity level. The method further includes iteratively determining respective features associated with each intermediate set of a sequence of intermediate sets, each intermediate set included the set of primitives and the set of points, the respective features including first features of the set of primitives and second features of the set of points. The method still further includes generating the visual representation based on the respective features of each one of the sequence of intermediate sets.

Abstract: Disclosed is a disentangled personalized federated learning method via consensus representation extraction and diversity propagation provided by embodiments of the present application. The method includes: receiving, by a current node, local consensus representation extraction models and unique representation extraction models corresponding to other nodes, respectively; extracting, by the current node, the representations of the data of the current node by using the unique representation extraction models of other nodes respectively, and calculating first mutual information between different sets of representation distributions, determining similarity of the data distributions between the nodes based on the size of the first mutual information, and determining aggregation weights corresponding to the other nodes based on the first mutual information; the current node obtains the global consensus representation aggregation model corresponding to the current node.

Abstract: Provided is a method of operating a central control device for generating a transmission signal to be transmitted to a plurality of user equipment through a plurality of base stations, the method including calculating a transmission power coefficient and a codebook parameter, such that a minimum value of a data rate of each of the plurality of user equipment is maximized, and a transmission power of the plurality of base stations is less than or equal to a transmission power limit and satisfies a fronthaul capacity limit, generating, by the central control device, a transmission signal based on the transmission power coefficient, and transmitting, by the central control device, the transmission signal to the plurality of base stations through a fronthaul.

Abstract: The present disclosure relates to a method of deriving quality improvement requirements. The method according to some embodiments may include receiving a plurality of evaluation information for a first product from an evaluation information database, inputting the plurality of evaluation information into a key phrase extraction model and determining key phrases for the plurality of evaluation information based on an output of the key phrase extraction model, grouping some of the key phrases for the plurality of evaluation information into multiple groups and storing information on each of the multiple groups in a memory, ranking the key phrases included in each of the multiple groups and storing information associated with the ranks of the key phrases included in each of the multiple groups in the memory and determining top n key phrases from each of the multiple groups as quality improvement requirements.

Abstract: An image decoding is performed by steps including: determining whether or not to perform filtering on a boundary of a current block; determining a filtering strength on the boundary of the current block, and a number of samples used in filtering; and performing filtering on the boundary of the current block on the basis of the filtering strength and the number of samples used in filtering, where the number of samples used in filtering is determined on the basis of a size of the current block.

Abstract: Disclosed are methods and apparatuses for image data encoding/decoding. A method for decoding a 360-degree image includes the steps of: receiving a bitstream obtained by encoding a 360-degree image; generating a prediction image by making reference to syntax information obtained from the received bitstream; adding the generated prediction image to a residual image obtained by dequantizing and inverse-transforming the bitstream, so as to obtain a decoded image; and reconstructing the decoded image into a 360-degree image according to a projection format. Therefore, the performance of image data compression can be improved.

Abstract: A high-power four-quadrant converter system includes a double-secondary-side oil-immersed rectifier transformer with an output connected to four three-phase bridge type thyristor rectifiers, wherein every two rectifier bridges share a group of rectifier transformer secondary sides; two rectifier bridges sharing a group of rectifier transformer secondary sides are inversely connected in parallel, one of the two rectifier bridges realizes a forward output, and the other one realizes a reverse output; two groups of rectifier bridges which output in the same direction can operate independently or in parallel; when the two groups of rectifier bridges operate in parallel, reactors are connected in parallel to realize current sharing; and the rectifier bridges for the forward output and the reverse output realize free smooth transition under control of a controller, so that a four-quadrant operation of an output current is realized.

Abstract: The present disclosure provides organoid co-cultures and methods of using such co-cultures. In particular, the present disclosure provides organoid-immune cell and organoid-bacterial cell co-cultures. The present disclosure further provides methods for testing therapeutic agents using the disclosed organoid co-cultures.

Abstract: Embodiments provide is a quantum dot composition that includes quantum dots, a cross-linking agent including four or more moieties represented by Formula A, and a mixed solvent including a first solvent, a second solvent, and a third solvent. The second solvent has a higher boiling point than the first solvent, the second solvent has a lower surface tension than the first solvent, and the third solvent includes a compound represented by Formula 3. Formula A and Formula 3 are explained in the specification: Ar2—R2.

Abstract: Provided is a method for recovering lithium from a waste lithium battery cell including: heat treating a mixture including a waste lithium battery cell and an additive; and trapping a lithium salt produced in the heat treating.

Abstract: An electrochromic composition includes an oxidizable compound, a reducible compound, and a solvent. The oxidizable compound includes wherein each R2 is independently —N(R1)2, —OR1, or —R1, and R1 is C1-3 alkyl group. The reducible compound has a chemical structure of and each R3 is independently C4-12 alkyl group, —OCnH2n+1, and n=0˜7.

Abstract: To control a mobile node group that performs a formation flight, mobile nodes constituting the mobile node group and a ground station that wirelessly communicates with each of the mobile nodes are included. The mobile nodes are classified into a follower mobile node and a leader mobile node that collects information on the follower mobile node and controls the follower mobile node. The mobile nodes wirelessly communicate with one another based on beamforming or MIMO. Based on an installed on-board processor, the leader mobile node controls the follower mobile node, and the mobile node controls a position or an attitude of the mobile node itself for performing the formation flight. The ground station performs link control of the wireless communication with the mobile node or link control of the wireless communication between the mobile nodes, and control of selecting any ground station that wirelessly communicates with the mobile node.

Abstract: The present invention successively performs hydrodeoxygenation (HDO) and dehydration so that, unlike that of a conventional technique, an alpha-olefin is prepared to have high selectivity, and not an olefin having a double bond at sites other than the alpha position. In addition, according to the present invention, selectivity for alpha-olefin can be further improved under optimal reaction conditions, and an alpha-olefin can be stably prepared with an extended preparation time of up to 180 hours.

Abstract: The present invention relates to a fluorine-based polymer coating film, an optical substrate comprising same, and a method for manufacturing the optical substrate, and provides a fluorine-based polymer coating film which is formed from fluorine-based polymer nanoparticles coming in contact and being bound to each other, and which is coated on a substrate to improve infrared transmittance. The fluorine-based polymer coating film according to the present invention has improved infrared transmittance, and since the size of the fluorine-based polymer nanoparticles is controlled to control the ultraviolet-infrared transmittance, transmission wavelength selectivity can be improved.

Abstract: A long-acting brexpiprazole preparation for injection and a preparation method therefor. The preparation method therefor comprises: (a) dissolving brexpiprazole in an organic solvent to form a brexpiprazole solution; (b1) pumping the brexpiprazole solution into a sheared or violently stirred precipitation solvent, so as to precipitate brexpiprazole, or (b2) pumping the precipitation solvent into the sheared or violently stirred brexpiprazole solution, so as to precipitate brexpiprazole; (c) filtering and optionally using water to wash an obtained solid; and (d1) drying the obtained solid, and respectively packaging the dried solid and an auxiliary material solution to obtain the long-acting brexpiprazole preparation for injection, or (d2) dispersing the obtained solid into the auxiliary material solution to obtain the long-acting brexpiprazole preparation for injection.