Abstract: An ash collecting system includes an ash discharge device, an ash conveying pipeline and an ash collecting tank. A first clean air chamber and a first foul air chamber are arranged in a shell. A plurality of first filtering structures and vibrating structures are arranged in the first clean air chamber. The first foul air chamber is provided with a sweeping structure for sweeping ash. The ash collecting tank includes a cylindrical shell and an ash bin. The ash removal port is in communication with the second air inlet. A second clean air chamber and a second foul air chamber are arranged in the cylindrical shell. Second filtering structures are arranged in the second foul air chamber. The ash bin is in communication with the second foul air chamber. An ash collecting structure for collecting ash is arranged in the ash bin.

Abstract: The present disclosure discloses a speaker box including a housing having a receiving space and a speaker unit received in the receiving space. The speaker unit includes a frame fixed on the support wall and spaced apart from the location wall, a vibration system mounted on the frame, including a diaphragm and a coil, a magnet system. The diaphragm includes a dome, an inner edge portion e, a folded ring, an outer edge portion, and a connection portion connected with the folded ring and the outer edge portion. The outer edge portion is glued to the support wall. The connection portion includes at least one first connection portion opposite to the location wall; the at least one first connection portion is a plate structure perpendicular with the vibration direction.

Abstract: An electronic device is provided.

Abstract: A method and an apparatus for question-answering, a related device, and a computer program product are provided. An answering content corresponding to question information is generated via first large models in a configured large model set. A second large model is pre-configured, a consistency of the answering contents generated by the respective first large models is detected using reasoning capability of the second large model, and a determination result of whether each pair of the answering contents in the answering content set is consistent is obtained. If the determination result indicates that at least one pair of answering contents is consistent, the consistent answering contents are outputted as a final answer. An error may exist in a single large model, but if at least one pair of answering contents is consistent, an accuracy rate of the consistent answering contents can be improved.

Abstract: A method of preparing lithium nickel manganese cobalt oxide high-nickel single-crystal positive electrode material comprises the following steps: mixing and ball milling nickel cobalt manganese hydroxide with a lithium source, zirconium oxide, tungsten oxide, and sodium carbonate, then performing primary sintering, pulverizing, and then obtaining an lithium nickel manganese cobalt oxide high-nickel single-crystal positive electrode material intermediate, the temperature of the primary sintering being 50-150° C. higher than a normal sintering temperature; and evenly mixing the lithium nickel manganese cobalt oxide high-nickel single-crystal positive electrode material intermediate and a coating agent, and then performing secondary sintering to obtain the lithium nickel manganese cobalt oxide high-nickel single-crystal positive electrode material.

Abstract: The present disclosure provides a complete machine structure, including a display module and a complete machine exterior frame. The display module includes a display panel and a front frame, the front frame including a front frame side edge on an outer side of a side edge of the display panel. The complete machine exterior frame includes at least one outer frame side edge each located on a side of the front frame side edge away from the display panel, and in contact with the front frame side edge. When a total contact area of all outer frame side edges and corresponding front frame side edges satisfies a certain condition, heat transferred from the display module to the complete machine exterior frame can be reduced by controlling the total contact area.

Abstract: In order to predict a preference that is representative of a group to which users belong more appropriately with higher accuracy based on preferences of the users for items, disclosed herein is an information processing apparatus, comprising: an encoding unit configured to encode a behavior history of a user for an item to generate a first embedding for each user; a weighting unit configured to derive a weight for each user based on information on a price of the item and the behavior history, and weight the first embedding generated by the encoding unit with the derived weight; and an aggregation unit configured to aggregate the first embedding weighted by the weighting unit to generate, for a group to which the user belongs, a second embedding indicating a preference of the group for the item.

Abstract: Provided is an electromagnetic field simulation method based on a face-centered cubic and a subgrid, including setting periodic boundary conditions and a metal plate to construct an electromagnetic field simulation model based on the face-centered cubic, FDTD and the subgrid; through the electromagnetic field simulation model, setting the source point in the subgrid region, selecting the detecting point, simulating the electromagnetic field simulated, and obtaining the moment domain waveform diagram of the electric field in the simulation region.

Abstract: Provided is an electromagnetic field simulation method based on a face-centered cubic and a subgrid, including setting periodic boundary conditions and a metal plate to construct an electromagnetic field simulation model based on the face-centered cubic, FDTD and the subgrid; through the electromagnetic field simulation model, setting the source point in the subgrid region, selecting the detecting point, simulating the electromagnetic field simulated, and obtaining the moment domain waveform diagram of the electric field in the simulation region.

Abstract: The present disclosure relates to a multi-stage temporary plugging fracturing method based on a stress cage effect, a device thereof and a storage medium, which are applied to the technical field of oil and gas exploitation. The method includes: determining a plugging point by acquiring a weak stress position on a major fracture; determining the consumption of temporary plugging deflection fluid by calculating a net pressure in a fracture that needs to be increased to generate a branch deflection fracture at the position where a principal stress is minimum; plugging a weakest stress position in the major fracture to form an artificial shielding layer, preventing subsequent fluid pressure from passing forward, thereby changing a geostress field near this position, thus forming an additional induced stress field near the weak position, generating a stress cage effect, and realizing formation of a multi-stage temporary plugging branch fracture in vertical wells.

Abstract: A speaker includes a frame, a vibration system, a magnetic circuit system, and flexible printed circuit boards. The vibration system, the magnetic circuit system, and the flexible printed circuit boards are accommodated in the frame. The vibration system comprises a sound film and a voice coil. The voice coil is configured to drive the sound film to vibrate and produce sound. The magnetic circuit system comprises a first magnetic steel and a second magnetic steel. The second magnetic steel is disposed around a periphery of the first magnetic steel. A magnetic gap is formed between the second magnetic steel and the first magnetic steel. The voice coil is disposed in the magnetic gap. Each of the flexible printed circuit boards includes an inner fixing portion, outer fixing portions, and elastic arms. The flexible printed circuit boards do not overlap with the voice coil. The speaker has better performance.

Abstract: The present invention concerns a method of producing at least one morphology-defined polymer aggregate by directly and covalently crosslinking polymer entities, the method comprising (a) providing polymer entities bearing covalently crosslinkable groups and respective crosslinker entities, the polymers bearing functional groups cross-linkable by the crosslinkers; and (b) bringing the polymer entities and the crosslinker entities in contact with each other in a solution under conditions that allow the polymer entities to aggregate or assemble into an ordered structure and be intermolecularly crosslinked in one step.

Abstract: A speaker includes a frame, a vibration system and a magnetic circuit system fixed with the frame, the magnetic circuit system includes a lower clamping plate, a main magnet fixed with an upper surface of the lower clamping plate, an annular secondary magnet surrounding the main magnet for forming a magnetic gap, the lower clamping plate includes a lower surface opposite to the upper surface and a leakage channel recessed from the upper surface to the lower surface but not penetrating the lower surface, the leakage channel connects to the magnetic gap and an outside of the annular secondary magnet. The present invention provides a thinner and more efficient sounding device. The present invention could effectively balance the sound pressure inside and outside the speaker and improve the acoustic performance of the speaker.

Abstract: The image restoration device has an initialization block that initializes the luminance value of each pixel coordinate to an intermediate value in the luminance array list that stores one of a pair of polarity values and intermediate values as the luminance value for each pixel coordinate. The image restoration device also has an update block that updates the initialized luminance array list according to the pixel coordinates and polarity values for each event, and an output block that outputs the luminance array list updated by the update block over the shooting period as a binary image. By the update performed in the update block, the luminance values of the firing coordinates where the event fired in the luminance array list are overwritten by the polarity values of the event. In addition, the update preserves the luminance values of the non-firing coordinates in the luminance array list, excluding the firing coordinates.

Abstract: The present invention relates, inter alia, to a method for functionalizing a cyanoacrylate-based material comprising the steps of providing a cyanoacrylate-based material having ester groups; providing a ligand having an amino group; contacting the cyanoacrylate-based material with the ligand under conditions favoring aminolysis of the amino group of the ligand and the ester groups of the cyanoacrylate-based material; and optionally obtaining the cyanoacrylate-based material functionalized with the ligand.

Abstract: The present disclosure relates to improving recommendations for small shops on an ecommerce platform while maintaining accuracy for larger shops. The improvement is achieved by retraining a machine-learning recommendation model to reduce sample selection bias using a meta-learning process. The retraining process comprises identifying a sample subset of shops on the ecommerce platform, where the sample batch includes shops in both a small size category and shops in a large size category. The machine-learning model is then used to make shop-specific user-item interaction predictions for each shop in the sample batch. A shop-specific loss is calculated for each shop based on the model's predicted user-item interactions for the shop-specific training dataset and the actual user-item interactions in the shop-specific training dataset. A global loss is calculated based on each of the shop-specific losses, and the baseline model is updated to minimize the global loss.

Abstract: A method and system for rapid retrieval of target images based on artificial intelligence, obtaining a template image and a plurality of known labels corresponding to the template image; extracting an image to be detected from a target image database; inputting both the image to be detected and the template image into a trained convolutional neural network, and outputting a hash code of the image to be detected and a hash code of the template image; obtaining a similarity between the images based on a Hamming distance between the hash codes, then selecting one or more images to be detected with the similarity higher than a set threshold as a retrieval result to output. Accordingly, the method and system is able to better cope with the retrieval of items in complex scenarios.

Abstract: A speaker includes: a frame, a vibration system, including a diaphragm, a voice coil, and a flexible circuit board, the flexible circuit board including a first fixing portion, a second fixing portion, and an elastic arm, and a magnetic circuit system, including a yoke with a through hole and a main magnet and a secondary magnet fixed to the yoke, the secondary magnet surrounding and spaced from the main magnet for forming a magnetic gap, the voice coil located in the magnetic gap, wherein a projection of the elastic arm along a vibration direction of the diaphragm is at least partially located in the through hole, the speaker further comprises a connecting piece connected with an outer surface of the yoke, the connecting piece covers the through hole. Compared with the related art, the speaker disclosed by the present disclosure has better acoustic performance.

Abstract: A multiple scenario-oriented item retrieval method and system. The method includes the steps of extracting, by Hashing learning, image features from an image training set to train a pre-built item retrieval model; when an image is in a scenario of hard samples, introducing an adaptive similarity matrix, optimizing the similarity matrix by an image transfer matrix, constructing an adaptive similarity matrix objective function in combination with an image category label; constructing a loss quantization objective function between the image and a Hash code according to the image transfer matrix; when the image is in a scenario of zero samples, introducing an asymmetric similarity matrix, constructing an objective function by taking the image category label as supervisory information in combination with equilibrium and decorrelation constraints of the Hash code; and training the item retrieval model based on the above objective function to obtain a retrieved result of a target item image.

Abstract: The present disclosure provides a display device comprising: a display panel having a light-exiting upper surface, a lower surface opposite to the light-exiting upper surface and a plurality of side edge end surfaces between the light-exiting upper surface and the lower surface, and having a first group of bonding electrodes at a side where a first side edge end surface in the plurality of side edge end surfaces is located; a first flexible circuit board electrically connected to the first group of bonding electrodes; a first insulating protection layer at a side of the first flexible circuit board away from the first group of bonding electrodes, wherein its upper edge is higher than an upper edge of the first flexible circuit board, and its lower edge is lower than the first group of bonding electrodes; a first conductive layer; and a first adhesive layer. The present disclosure also provides a display apparatus comprising the display device and a composite adhesive tape for a display device.