Abstract: Lidar detection device based on a lens and an integrated beam transceiver, comprising a laser, a coupling fiber, a substrate, an input waveguide, a connection waveguide, a 1×N optical switch, a switch electrical interface, N switch output waveguides, N transceiving units, an off-chip processor and a lens, wherein N is a positive integer above 2. The invention can realize three-dimensional detection of a target, and the invention has the characteristics of two-dimensional beam steering independent of wavelength switching, low control complexity, low electric power consumption, receiving and emitting monolithic integration and high receiving efficiency, and being compatible with two laser ranging functions of ToF and FMCW.

Abstract: Embodiments of this application disclose a message transmission method and apparatus, a terminal, and a base station. In the method, a symbol or symbol group may be used as a granularity to select a plurality of symbols or symbol groups from one or more slots and then allocate the plurality of symbols or symbol groups to a same terminal for transmitting data. The plurality of symbols or symbol groups may be used for uplink data scheduling or may be used for downlink data scheduling. Therefore, a slot resource is allocated at a small granularity, so that a time domain resource is more flexibly allocated, and the slot resource is more fully utilized. This helps improve message transmission efficiency, thereby expanding a coverage area.

Abstract: A data transmission method includes obtaining, by user equipment (UE), a maximum transmit power; determining, by the UE, a transmit power of a data channel and/or a transmit power of a control channel based on the maximum transmit power and a first parameter, where the first parameter includes at least one of the following: a bandwidth of the data channel, a bandwidth of the control channel, or a carrier type of a carrier of a first link; and sending, by the UE, the control channel and the data channel in a same subframe.

Abstract: The present invention provides a nanolayer-lubricated diamond grinding wheel grinding method based on a shock wave cavitation effect. In the method, after a gas pressure regulation valve is turned on, a shock wave generated by an acceleration tube pushes nanoparticles to move forward, and the nanoparticles are then accelerated by a small de Laval nozzle to acquire a high initial velocity. One wave source of a shock wave speed-increase module generates a high-frequency high-strength shock wave, to impact nanoparticles with an initial velocity, to enable the nanoparticles to be continuously accelerated downward in an axial direction of a large de Laval nozzle, until the nanoparticles are embedded on a grinding wheel surface at a maximum speed to form a nanolayer. The other wave source is used to clean impurities on the grinding wheel surface.

Abstract: This application discloses an image processing method. The method includes: obtaining to-be-rendered data; performing rasterization processing on the to-be-rendered data to obtain a first image; and identifying a target object in the first image by using an identifier, and performing ray tracing processing on the target object to obtain a second image. Because ray tracing processing is performed on a local object in an image, computing power requirement for image rendering is reduced, so that an electronic device with limited computing power can also implement image rendering by using the ray tracing processing, to improve image rendering effect.

Abstract: This application discloses a semantic learning-based down-sampling method of point cloud data of an aircraft, including: (S1) constructing a multi-input encoder based on feature learning according to point cloud semantic learning principle; inputting the point cloud data of the aircraft and feature point data into the multi-input encoder for feature fusion followed by decoding using a decoder the multi-input feature fused data to obtain to-be-measured data; (S2) constructing and training a point cloud feature weight calculation network based on semantic learning to acquire a feature weight of each point in the to-be-measured data; and (S3) performing spatial weighted sampling on the feature weight of each point in the to-be-measured data followed by down-sampling based on Gaussian distribution-based spatial sampling principle.

Abstract: The present disclosure provides an active pharmaceutical ingredient containing a crystal form including a compound of Formula (I) and fumaric acid. An X-ray powder diffraction pattern of the crystal form obtained by using Cu-K? radiation includes at least three peaks selected from the group consisting of 10.94°±0.2° 2?, 19.06°±0.2° 2?, 23.50°±0.2° 2?, and 24.66°±0.2° 2?; a particle size D90 of the active pharmaceutical ingredient is smaller than or equal to 20 ?m, and a particle size D50 of the active pharmaceutical ingredient is smaller than or equal to 10 ?m.

Abstract: The present disclosure provides an interference filter, a lithography system incorporating an interference filter, and a method of fabricating an interference filter. The interference filter includes a transparent substrate having a front surface and a back surface, a plurality of alternating material layers formed over the front surface of the transparent substrate that form a bandpass filter, and an anti-reflective structure formed over the back surface of the transparent substrate. The alternating material layers alternate between a relatively high refractive index material and a relatively low refractive index material.

Abstract: An adaptive, large graph-oriented unified memory management method is proposed; according to the order of priorities of different types of graph data structure in a graph computing application, whether the current GPU memory is full is sequentially determined by means of GPU memory checking; whether the size of current graph data exceeds the available memory capacity of the GPU is determined by means of data overflow checking; and then a unified memory management policy is configured; the method uses different graph algorithms based on the characteristics of graph data structure and the size of the available GPU memory; the method can significantly improve the performance of processing large graphs, which exceed the video memory capacity under a unified memory architecture, including improving GPU bandwidth utilization, reducing the number of page faults and the overhead of processing page faults, and speeding up the execution of graph computing programs.

Abstract: A transmit end obtains a frequency hopping parameter and resource allocation information of a to-be-transmitted message, where the frequency hopping parameter includes at least one of bandwidth part indication information, beam indication information, reference signal configuration information, subcarrier spacing indication information, transmission waveform indication information, slot type indication information, channel type indication information, and transmission carrier indication information. The transmit end determines, based on the resource allocation information and the frequency hopping parameter, a physical resource used to send the to-be-transmitted message, where the physical resource includes information about a frequency domain resource on which the to-be-transmitted message is mapped in at least one time unit. The transmit end sends the to-be-transmitted message by using the physical resource.

Abstract: A method for extracting and analyzing spatial information of a control and protection zone of rail transit with multiple threshold constraints, including the following steps: 1, performing format conversion on a data file and extracting a plurality of coordinate points; 2, selecting key points from the plurality of coordinate points for data simplification to obtain a simplified limit line, a simplified outer structure edge line and a simplified boundary line of construction; 3, programming the simplified limit line, the simplified outer structure edge line, and the simplified boundary line of construction, calling a database, and reading data therefrom for spatial relationship comparison; 4, determining whether the construction of a rail-involved construction project intrudes into a control and protection zone of rail transit according to a result of the spatial relationship comparison, thus completing the extraction and analysis of the spatial information of the control and protection zone of rail transit.

Abstract: According to the method and the apparatus, a first device generates a first synchronization sequence and/or a second synchronization sequence, where the first synchronization sequence is different from any sequence of a third synchronization sequence set, and/or the second synchronization sequence is different from any sequence of a fourth synchronization sequence set. The method and the apparatus may be applied to V2X, LTE-V, V2V, an internet of vehicles, MTC, the IoT, LTE-M, M2M, the internet of things, and the like.

Abstract: A pH-sensitive release system comprising a capsule capable of releasing an agent in both low pH environments and high pH environments. The capsule encapsulates an SrCrO4 agent and comprises at least two weak polyelectrolytes (e.g., PEI and PAA). The capsule responds to both low and high pH changes in the local environment by releasing the agent. The agent may include a corrosion inhibitor and may help prevent or ameliorate the effects of corrosion.

Abstract: A method includes: obtaining, by a first communications device, a first carrier, where the first carrier is used to transmit a first message and a second message; obtaining, by the first communications device, a first transmission resource and a second transmission resource of the first carrier, where the first transmission resource is used to send the first message, the second transmission resource is used to send the second message, and the first transmission resource and the second transmission resource are different transmission resources; sending, by the first communications device, the first message on the first transmission resource by using a first wireless access technology; and sending, by the first communications device, the second message on the second transmission resource by using a second wireless access technology, where the first wireless access technology and the second wireless access technology are different inter-device direct communications technologies.

Abstract: A convenient self-locking blood pressure cuff facilitating one-handed use by a user taking his own blood pressure includes a cuff belt, a casing assembly, and a self-locking structure. The self-locking structure is received in the casing assembly. The self-locking structure includes a core shaft, a locking assembly, and a pressing assembly. The core shaft is slidably connected to the casing assembly. The locking assembly and the pressing assembly are wrapped around the core shaft. The locking assembly can rotate when a free end of the cuff belt moves with respect to the casing assembly. The locking assembly can further press against the cuff belt when the core shaft slides in the casing assembly. The pressing assembly presses against the locking assembly to prevent the locking assembly from rotating back.

Abstract: Disclosed are a point cloud polar coordinate coding method and a device, including dividing a circular scanning area scanned by a lidar at an equal angle with an angle ?? to obtain a plurality of identical polar coordinate areas; dividing each of the polar coordinate areas with equal length along a radial direction with a length ?r to obtain a plurality of polar coordinate grids and generating a plurality of polar coordinate cylinders corresponding to each of the polar coordinate grids in a three-dimensional space; generating polar coordinate cylinder voxels; extracting structural features from the all point cloud data in each of the polar coordinate cylinder voxels; obtaining a two-dimensional point cloud pseudo-image; boundary supplementing to the two-dimensional point cloud pseudo-image; and performing feature extraction on the two-dimensional point cloud pseudo-image by using convolutional neural networks, and outputting a final feature map.

Abstract: The present invention relates to the field of plant genetic engineering. In particular, the present invention relates to acetolactate synthase (ALS) mutants, protoporphyrinogen oxidase (PPO) mutants, acetyl-CoA carboxylase (ACCase) mutants and/or p-hydroxyphenylpyruvate dioxidase (HPPD) mutants capable of conferring herbicide resistance in plants, especially in wheat and/or rice plants, and methods for production herbicide-resistant plants, especially wheat and/or rice plants comprising said acetolactate synthase (ALS) mutants and/or protoporphyrinogen oxidase (PPO) mutants and/or acetyl-CoA carboxylase (ACCase) mutants and/or p-hydroxyphenylpyruvate dioxidase (HPPD) mutants.

Abstract: Methods and structures of a three-dimensional memory device are disclosed. In an example, the method for forming a memory device includes the following operations. First, a plurality of first semiconductor channels can be formed over a first wafer with a peripheral device and a plurality of first via structures neighboring the plurality of first semiconductor channels. The plurality of first semiconductor channels can extend along a direction perpendicular to a surface of the first wafer. Further, a plurality of second semiconductor channels can be formed over a second wafer with a plurality of second via structures neighboring the plurality of second semiconductor channels. The plurality of second semiconductor channels can extend along a direction perpendicular to a surface of the second wafer and a peripheral via structure.

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 disclosure provides a method for dissipating heat from a vehicle, a storage medium, and a vehicle. The method includes the following steps: determining a target opening angle of an active air-intake grille based on a current vehicle-speed and a current heat-dissipation demand of the vehicle while the vehicle is in a driving state; determining a residual heat-dissipation demand of the vehicle based on the current heat-dissipation demand and a heat-dissipation demand that can be provided by the target opening angle; determining, according to the residual heat-dissipation demand, the target speed gear required for the cooling fan of the vehicle to provide the residual heat-dissipation demand; and adjusting an opening angle of the active air-intake grille of the vehicle to the target opening angle and a speed gear of the cooling fan to the target speed gear, to perform a heat dissipation for the vehicle.