Abstract: Embodiments of the present disclosure provide a data query method, a device, a system, and a storage medium. In this embodiment of the present disclosure, a data schema of target data may be constructed via a query request; and the target data is assembled according to the constructed data schema. In this way, based on the query request and the data schema, a computing operation can be performed on the target data stored in the constructed data schema to obtain a query result, thereby implementing schema on read. This data query manner does not require data to be written according to a fixed data schema, which can improve data flexibility. In addition, schema on read can satisfy computation and analysis requirements and improve data computing capability of the database.

Abstract: An air conditioner includes a housing provided with an air inlet and an air outlet, a heat exchanger and a fan assembly disposed inside the housing. The fan assembly includes a mounting assembly, and the mounting assembly includes a first mounting member and a second mounting member. The first mounting member is detachably disposed on the second mounting member. The first mounting member includes at least one first volute portion and at least one first fixing portion. The second mounting member includes at least one second volute portion, at least one second fixing portion and a partition portion. The second mounting member is fixed to the top plate. The at least one second volute portion, the at least one second fixing portion and the partition portion are integrally formed.

Abstract: Embodiments of the disclosure provide an array substrate, a display panel and a display apparatus. The array substrate includes: a plurality of first metal wires extending in the first direction, a plurality of conductive portions in the display region; an orthographic projection of at least one conductive portion is between the orthographic projections of adjacent first metal wires on the base substrate; the second conductive layer includes: a plurality of first electrodes in the display region; a first metal sub-wire and a second metal sub-wire included in the first metal wire are on two sides adjacent to the conductive portion; the first metal sub-wire is electrically connected with the second portion; the first part is electrically connected with the first electrode through the conductive portion.

Abstract: The present disclosure discloses an earphone. The earphone includes a loudspeaker component and at least one blocking member, the at least one blocking member including a first blocking member, the first blocking member being provided on one side of the loudspeaker component, wherein, in a wearing state, at least a portion of the first blocking member extends in an extension direction from the loudspeaker component to an ear canal of a user. In the above manner, the earphone provided in the present disclosure can increase a volume heard by the user's ear, so that the user can hear the content with a smaller volume and also the sound leakage can be reduced, thereby improving the user's listening effect.

Abstract: The present application relates to a real-time defect detection method for metal deposition based on artificial intelligence, which includes: acquiring a deposition defect dataset and extracting key deposition features by using a backbone network; capturing high-level semantic features in the deposition features and performing multi-scale feature fusion by a high-efficiency hybrid encoder; adopting an Intersection over Union (IoU) aware query selection method to assign corresponding classification scores to deposition features with different IoU values during the training process for constraining model learning, and selecting more accurate deposition features in the decoding stage by optimizing object queries; mapping the optimized objects to classification confidence and bounding boxes, and accelerating training convergence through a denoising module in a decoder.

Abstract: The present embodiments relate to a modular system to sort and analyze melee sized gemstones in an automated manner. The system can use a rotating tabletop design to separate gemstones for individual analysis and sorting. For instance, a feeder subsystem can obtain gemstones, and a singulation subsystem can orient the gemstones for further processing. The gemstone can move between subsystems due to the rotation of the table. A set of metric subsystems disposed about the table can process aspects of the gemstone to derive metrics for the gemstone. Further, a sorting subsystem can sort the gemstone into a corresponding bin based on the derived metrics for the gemstone.

Abstract: Disclosed are a backlight module and a display apparatus. The backlight module includes: a backboard and a diffusion plate arranged opposite to each other, and a middle bezel arranged along an edge of the backboard and abutting against the diffusion plate; and a plurality of light-emitting devices on a side of the backboard facing the diffusion plate. The light-emitting device of the plurality of light-emitting devices located on an outermost side is a first light-emitting device, and in a first direction of the middle bezel pointing toward the first light-emitting device, the light-emitting device nearest the first light-emitting device is a second light-emitting device.

Abstract: A long-span corridor comprising two sets of floor cantilevered inclined trusses combined with suspension cable bearing is provided, including floor cantilevered inclined trusses, floor double-arch trusses, radial circumferential connecting structures, V-shaped support structures, corridor truss structures and suspension cable bearing structures; two trapezoidal tapering planar inclined trusses of each set of floor cantilevered inclined trusses are connected to each other through a combination of the floor double-arch trusses and through the radial circumferential connecting structures to form a single-set system; and the corridor truss structures are arranged between the two single-set systems.

Abstract: The present disclosure provides an impedance device and a system for simulating an impact of a head on a vibration of a vibration unit. The impedance device may include a mass part, an elastic part, and a fixing part. The mass part is connected to the fixing part through the elastic part. The fixing part is a hollow structure, the fixing part includes an opening. The elastic part is located at the opening and is connected to the fixing part. The elastic part forms a cavity with the fixing part. An elastic coefficient of the elastic part of a vibration direction in which the mass part vibrates relative to the fixing part in a range of 600 N/m~5000 N/m.

Abstract: A repeat transmission processing method includes obtaining, by a terminal, first information; determining, by the terminal, at least one transmission gap in a first repeat transmission process according to the first information; and performing, by the terminal, a first operation in a transmission gap.

Abstract: A video encoding method, an electronic device, and a storage medium are provided. The method includes: obtaining a first playback feature of a first video within a preset number of time windows in response to a preset trigger; determining a first temporal feature according to the first playback feature and determining a first image quality weight and a first smoothness weight according to the first temporal feature; constructing a first encoding evaluation model according to the first image quality weight and the first smoothness weight; inputting candidate encoding parameter combinations into the first encoding evaluation model to obtain a first encoding evaluation value; determining a first encoding parameter combination from the candidate encoding parameter combinations according to the first encoding evaluation value; and encoding the first video according to the first encoding parameter combination.

Abstract: Provided are a cyclic 2-aminopyrimidine compound having a structure as shown in formula (I), or a pharmaceutically acceptable salt, stereoisomer or prodrug molecule thereof, and a use thereof. The compound can effectively inhibit the activity of EGFR protein kinase drug-resistant mutants (such as EGFRT790M and EGFR19del/T790M/C797S), and can overcome the clinical drug resistance of patients suffering from tumors such as non-small cell lung cancer induced by existing third-generation selective EGFRT790M small molecule inhibitors Osimertinib (AZD9291), Olmutinib (HM6171), Rociletinib (CO-1686) and the like.

Abstract: The present disclosure provides a pair of eyeglasses, comprising: a sound-producing device including a diaphragm and a magnetic circuit assembly; an eyeglass temple configured to accommodate the sound-producing device, and an eyeglass rim. A front cavity is formed at a side of the diaphragm away from the magnetic circuit assembly, and a back cavity is formed at a side of the diaphragm facing the magnetic circuit assembly. The eyeglass temple is provided with a sound outlet hole and a pressure relief hole, the sound outlet hole is in communication with the back cavity, and the pressure relief hole is in communication with the front cavity. In a wearing state, the sound outlet hole is closer to an ear canal opening of a user than the pressure relief hole, and an opening area of the sound outlet hole is greater than an opening area of the pressure relief hole.

Abstract: The embodiment of the present disclosure provides a video frame prediction method and device.

Abstract: Disclosed are a polyurethane-polyurea aqueous dispersion, and a preparation method therefor and a use thereof. The aqueous dispersion comprises a polyurethane-polyurea dispersed therein, containing a terminal carboxyl group, a sulfonate group, and a carboxylate group, and having a specific theoretical molecular weight, wherein the content of the carboxylate group is 1.49-11.9 mmol/100 g, the content of the sulfonate group is 0.26-7.9 mmol/100 g, the content of the terminal carboxyl group is 0.5-3.7 mmol/100 g, the molecular weight is 60,000-390,000, and the specific theoretical molecular weight is a theoretical design molecular weight and is obtained by means of an end-group calculation method. The polyurethane-polyurea aqueous dispersion avoids the problems of glove cracking and pinholes in glove production and improves production stability.

Abstract: Provided are an electric motor having an adjustable magnetic field, and a vehicle. An excitation ring assembly of the electric motor includes an excitation ring having an outer ring wall and an inner ring wall and an excitation winding. An excitation rotor of the electric motor includes first permanent magnets and a rotor core provided with first and second magnetic pole forming sections that are circumferentially arranged alternately, a first magnetic pole cooperating portion corresponding to the first magnetic pole forming section, and a second magnetic pole cooperating portion corresponding to the second magnetic pole forming section. The first permanent magnets correspond to the first and second magnetic pole forming sections. A second air gap is defined by the outer ring wall and the first magnetic pole cooperating portion and a third air gap is defined by the inner ring wall and the second magnetic pole cooperating portion.

Abstract: Disclosed are a backlight module and a display apparatus. The backlight module includes: a backboard and a diffusion plate arranged opposite to each other, and a middle bezel arranged along an edge of the backboard and abutting against the diffusion plate; and a plurality of light-emitting devices on a side of the backboard facing the diffusion plate. The light-emitting device of the plurality of light-emitting devices located on an outermost side is a first light-emitting device, and in a first direction of the middle bezel pointing toward the first light-emitting device, the light-emitting device nearest the first light-emitting device is a second light-emitting device.

Abstract: The present application relates to a real-time simulation and model prediction method for wire arc additive manufacturing based on event sequences, including: in the real-time process of wire arc additive manufacturing of metal structures, activating elements in real time through event sequences and guiding the heat source in real time; setting heat source model parameters, thermal simulation parameters and mechanical simulation parameters to perform real-time thermal-mechanical coupling simulation of wire arc additive manufacturing; establishing a simplified calculation theoretical model of the residual stress field and correcting the calculation model prediction.

Abstract: A display substrate and a display apparatus are provided. The display substrate includes a base substrate; sub-pixels arranged in an array and on the base substrate; data line groups on the base substrate; each data line group includes data lines, each of which is connected to one column of sub-pixels; data selectors on the base substrate and connected to the data line groups in a one-to-one correspondence; data lines in a same data line group are connected to a same data selector; and data selection signal lines, wherein different data selection signal lines output different data selection signals; and different data lines connected to a same data selector correspond to different data selection signal lines, respectively. The display panel provided may effectively reduce the resistance on the data selection signal lines, thereby reducing the delay of the data selection signals and further improving the charging uniformity of sub-pixels.

Abstract: The embodiments of the present disclosure provide an acoustic output device including a sound emitting part. The sound emitting part may include at least one acoustic driver, and a first chamber, and a second chamber acoustically coupled to the at least one acoustic driver. The first chamber may have at least one first sound outlet, and the second chamber has at least one second sound outlet. The at least one acoustic driver may radiate sounds to an external environment through the at least one first sound outlet and the at least one second sound outlet. In at least a portion of a low-frequency range, the sounds emitted by the sound emitting part towards a far field may exhibit directivity.