Abstract: Embodiments of this application provide a resource configuration method and a device. According to this method, a first terminal device may reserve N resources based on listen before talk LBT durations corresponding to N transmission requirements. Because the LBT durations are considered, cases in which an LBT duration of a transmission requirement has not ended when a resource corresponding to the transmission requirement arrives can be reduced, so that a probability that the first terminal device can transmit data on the resource corresponding to the transmission requirement can be increased, thereby ensuring communication efficiency of the terminal device.

Abstract: The disclosure provides an apparatus, method, device and medium for 3D dynamic sparse convolution. The method includes: receiving an input feature map of a 3D data sample; performing input feature map partition to divide the input feature map into a plurality of disjoint input feature map groups; performing a shared 3D dynamic sparse convolution to the plurality of disjoint input feature map groups respectively to obtain a plurality of output feature maps corresponding to the plurality of disjoint input feature map groups, wherein the shared 3D dynamic sparse convolution comprises a shared 3D dynamic sparse convolutional kernel; and performing output feature map grouping to sequentially stack the plurality of output feature maps to obtain an output feature map corresponding to the input feature map. (FIG. 2).

Abstract: A method for pre-positioning a rotor of an outdoor fan in a counter-rotation state before operation includes: 1) during a counter-operation state, sending, by a microprocessor, a signal to the inverter circuit to turn off all upper electronic switching tubes and turn on all lower electronic switching tubes; 2) measuring a phase current of each phase coil winding in the stator assembly; 3) calculating a back electromotive force of each phase coil winding in the stator; 4) calculating a position angle of the rotor assembly; 5) checking if the phase current of each phase coil winding is all smaller than a preset threshold current; if not, return to 1); if yes, proceed to 6); and 6) calculating a resistance torque to stop the rotor assembly based on the position angle of the rotor assembly, and then stopping the rotor assembly to achieve pre-positioning of the rotor before starting.

Abstract: Provided are a gravure coating device for preparing a large-width ultrathin metal lithium strip and the preparation method, relating to the technical field of preparation of metal lithium materials.

Abstract: In some embodiments, a method calculates a reward function for an adaptive bitrate function that is based on a bandwidth and profiles in a profile ladder for a current segment of content. The reward function calculates a first profile should be selected for the current segment and, based on a previously selected profile from a prior segment and profiles in the profile ladder, changes the first profile to a second profile from the profile ladder. The method requests the second profile from the profile ladder for the current segment.

Abstract: A cell is provided, including a main body formed by winding electrode sheets and a separator. The main body is a flat structure with a length direction and a width direction. The first length L1 of the main body along the length direction is greater than the first width W1 of the main body along the width direction. The width direction of the main body is perpendicular to the plane where the winding direction of the main body is located. The cell has a width direction perpendicular to the plane where the winding direction of the main body is located, thereby shortening the infiltration path of the electrolyte and improving the infiltration rate and infiltration effect of the electrolyte. A prismatic battery is also provided.

Abstract: An emergency call method is applied to a vehicle-mounted communications system. The emergency call method includes a telematics box activating a host function. The host function includes controlling a first transmission node and a peripheral connected to the first transmission node. The telematics box is connected to the first transmission node, and the telematics box performs data transmission with the first transmission node using the host function. The first transmission node is in a master node mode.

Abstract: In an embodiment, a magnetic assembly includes: an inner permeance annulus; and an outer permeance annulus connected to the inner permeance annulus via magnets, wherein the outer permeance annulus comprises a peak region with a thickness greater than other regions of the outer permeance annulus.

Abstract: A first device determines, based on a location of the first device and a quality of service parameter of first data, an identity of a first zone in which the first device is located, where the first data is data sent by the first device. The first device sends indication information, where the indication information includes first information, and the first information indicates the identity of the first zone.

Abstract: An exemplary embodiment of the present disclosure provides a chip-scale atomic beam system comprising an atomic vapor source, a plurality of channels, and a propagation chamber. The atomic vapor source chamber can comprise an atomic vapor source configured to emit an atomic vapor. The plurality of channels can have first ends and second ends. The first ends can be in fluid communication with the atomic vapor source chamber. The plurality of channels can be configured to collimate the atomic vapor as it moves through the plurality of channels from the first ends to the second ends. The propagation chamber can be in fluid communication with the second ends of the plurality of channels. The propagation chamber can have an internal pressure less than an internal pressure of the atomic vapor source chamber to enable the collimated atomic vapor to propagate through the propagation chamber.

Abstract: A functional chef kitchen machine, a feeding device thereof and a feeding method therefor. The feeding device comprises a first assembly and a second assembly rotationally connected to the first assembly; a plurality of ingredient storage bins are disposed along a circumference of the second assembly; bottoms of the ingredient storage bins are provided with openings; the first assembly is provided with a discharge port; and when the second assembly rotates on the first assembly, the openings at lower ends of the plurality of ingredient storage bins are sequentially communicated with the discharge port. By placing different food materials into the different ingredient storage bins, when the second assembly rotates, the different food materials can be sequentially fed from the discharge port. Accordingly, different food materials can be fed by stages.

Abstract: The present invention discloses an urban traffic velocity estimation method based on multi-source crowd sensing data. This method, based on roadside pedestrian data and road navigation data collected by smart phones, obtains a final estimated velocity through the steps of missing data filling, self-view velocity aggregation and multi-view velocity fusion. This fine-grained large-scale urban traffic velocity estimation method can achieve velocity estimation on all types of roads, including suburban road sections and paths, instead of just focusing on main roads in a city center. According to the present invention, based on data driving, the urban traffic velocity estimation method does not need to install additional devices on roads, and is low in cost and high in universality. Compared with the prior art, the urban traffic velocity estimation method has higher practicability, theoretical property and applicability, and is of great significance for improving traffic management and planning.

Abstract: A method and a system for controlling cooling of a vehicle, and a vehicle are provided in the present disclosure. In the present disclosure, a maximum value among cooling demand values of cooling objects is used to control a servo component in a cooling system to operate according to an execution opening determined by a preset corresponding relation, so that operating states of the servo components may be correlated and may be comprehensively controlled, so as to prevent the control system from oscillating and improve control stability, thus solving a problem that periodic oscillation of the operating states of the servo components is easily caused and service life of the servo components is affected in existing control modes of the cooling system of the vehicle.

Abstract: The present invention relates to pile foundations and provides an intelligent construction control method and system for jet grouting piles based on stratum information inversion. This method integrates multi-source sensing components and local transmission to perceive real-time drilling information to a data integration terminal. Using engineering soil layer data as training samples, a machine learning algorithm correlates perception information with geological conditions, judging and outputting stratum conditions in real time. An XGBoost model quickly and accurately identifies soil layers at the site. Based on big data matching of a cloud platform, an optimal construction parameter database is established, and the optimal combination of parameters is acquired through algorithm matching.

Abstract: A simulated flame lamp includes a dispersion lamp shade, a support having a mounting platform, a first illuminant, a second illuminant and a control IC. The first illuminant is configured to emit light toward a side wall of the dispersion lamp shade, and the second illuminant is located above the first illuminant and configured to emit light toward the side wall of the dispersion lamp shade. The first illuminant is always on when energized, and the light of the first illuminant is projected to a lower section of the side wall of the dispersion lamp shade; the control IC is configured to control the second illuminant to emit light at intervals so that the light of the second illuminant is projected to an upper section of the side wall of the dispersion lamp shade. The simulated flame lamp has simple structure, low cost and good simulation effect.

Abstract: The present invention provides a hypersonic large internal contraction ratio air inlet channel having stepless adjustable air release valve, including an air inlet channel front body, an air-discharging slit cover plate, sidewalls, a lip cover, air-discharging cavities, valve plates, partition plates, a rotatable shaft, an expansion section and a driver. The valve plates are rotated through the driver according to the actual working conditions of air inlet channel, the minimum cross-section of the air discharging flow path is thus changed, and a stepless dynamic adjustment of the air discharging flow of the air inlet channel can be realized, so that the aerodynamic performance of the air inlet channel is improved, and the air discharging resistance of the air vehicle is reduced.

Abstract: A display panel includes an array substrate and a color filter substrate, where the color filter substrate includes a first substrate, spacer pillars, and color filter layers, each spacer pillar is in the spacing region, and each pixel region is provided with a color filter layer. Each spacer pillar includes at least one spacer layer each made of the same material as the color filter layer in one of the pixel regions. The array substrate includes a second substrate and a support layer, where the support layer is on a side of the second substrate facing the color filter substrate, and includes a body layer and a plurality of protrusions on a side of the body layer away from the second substrate, where each protrusion is each opposite to at least one of the spacer pillars. At least one of the spacer pillars is each supported on the corresponding protrusion.

Abstract: A simulated flame lamp includes a dispersion lamp shade, a support having a mounting platform, a first illuminant, a second illuminant and a control IC. The first illuminant is configured to emit light toward a side wall of the dispersion lamp shade, and the second illuminant is located above the first illuminant and configured to emit light toward the side wall of the dispersion lamp shade. The first illuminant is always on when energized, and the light of the first illuminant is projected to a lower section of the side wall of the dispersion lamp shade; the control IC is configured to control the second illuminant to emit light at intervals so that the light of the second illuminant is projected to an upper section of the side wall of the dispersion lamp shade. The simulated flame lamp has simple structure, low cost and good simulation effect.

Abstract: Provided are a digital twinning method and system for a scene flow based on a dynamic trajectory flow, which belong to the field of traffic control. The method includes: extracting and identifying a target semantic trajectory with a detecting and tracking integrated multi-modal fusion and perception enhancement network; extracting road traffic semantics, so as to obtain a highly parameterized virtual road layout top view; obtaining a road layout traffic semantic grid encoding vector based on the virtual road layout top view; constructing a target coupling relation model; constructing a traffic force constraint model; constructing a long short term memory trajectory prediction network; predicting a motion trajectory of a target with the long short term memory trajectory prediction network, so as to obtain the predicted motion trajectory; and obtaining a digital twin of the scene flow based on trajectory extraction, semantic identification and the predicted motion trajectory.

Abstract: This specification provides a key management method and a related device, which are applied to security hardware. The method includes: preventing, in response to a start instruction for the electronic device, the CPU from being started, and encrypting a second key corresponding to the security hardware by using the stored first key; sending an encrypted second key to the storage medium, so that the storage medium decrypts the encrypted second key by using the first key, and stores a decrypted second key, where the second key is stored in volatile storage space of the storage medium, and the second key is used to encrypt data when the data is written into the storage medium, and decrypt data when the data is read; and controlling, in response to that the storage medium successfully stores the second key, the CPU to be started.