Abstract: This application discloses a point cloud motion compensation method and apparatus, a storage medium, and a LiDAR. The method includes: obtaining a millimeter-wave point cloud data frame by a millimeter-wave radar through scanning a preset working region, where each millimeter-wave point cloud data frame includes multiple pieces of millimeter-wave point cloud data, and each piece of millimeter-wave point cloud data includes a timestamp and a motion parameter of a target object; obtaining a LiDAR point cloud data frame by the LiDAR through scanning a preset working region, where each LiDAR point cloud data frame includes multiple pieces of LiDAR point cloud data, and each piece of LiDAR point cloud data includes a timestamp and spatial position coordinates of the target object; fusing the millimeter-wave point cloud data with the LiDAR point cloud data; and performing attitude compensation on the LiDAR point cloud data based on the fused data.

Abstract: In a driving policy determining method, for each object, a first target motion trajectory of the object is calculated on a premise that the object does not collide with another object that moves based on an initial motion trajectory. Then, for the ego vehicle, a second target motion trajectory of the ego vehicle is calculated on a premise that the ego vehicle does not collide with another object that moves based on a first target motion trajectory. Then, a driving policy is determined based on the second target motion trajectory of the ego vehicle and a first target motion trajectory of at least one game object. The foregoing operations are repeated until the determined driving policy matches an initial driving policy.

Abstract: A catheter assembly may include a catheter adapter, a septum housing, and a septum. The catheter adapter may include a distal end, a proximal end, an inner wall extending between the distal end and the proximal end, and a lumen formed by the inner wall. The septum housing may include one or more protrusions and may be secured to the inner wall by one or more of the following: an interference fit between the one or more protrusions and the inner wall, a snap fit between the one or more protrusions and the inner wall, and bonding between the one or more protrusions and the inner wall. The septum may be at least partially disposed within the septum housing and configured to at least substantially seal the lumen.

Abstract: The present application belongs to the technical field of radio frequency connectors. Provided is a radio frequency coaxial connector. A first conical surface is provided at a tail-end step at the rear end of an outer conductor, a second conical surface is provided on an inner side of the front end of a C-shaped open clamp, and after a cable to be connected is connected, the first conical surface and the second conical surface are in contact and abut against each other. In the present application, the outer diameter of the C-shaped open clamp with two or more turns is gradually enlarged, which not only improves the cable tensile resistance and intermodulation performance of the connector, but also ensures the coaxially of the connector and the cable.

Abstract: A micro-thrust and micro-impulse application device and method generates micro-thrust to a target by light pressure action from laser reflection. The device comprises a laser, a laser adjustment device, a beam splitter, a shutter, a reflector, and a laser power meter. Laser beam is generated by laser, adjusted by laser adjustment device, and divided into two paths by beam splitter. Laser in one path is measured at laser power meter; power measured determines magnitude for micro-thrust. In another path, it irradiates on the reflector on the target via shutter for generating micro-thrust. Light reflected by the reflector arrives at another laser power meter. Power of two laser paths are measured in real time by two laser power meters, acting micro-thrust is calculated by combining parameters including reflectivity and incident angle of laser irradiating the reflector, and light output power of the laser is adjusted in real time.

Abstract: The present disclosure provides a steerable and adjustable recorder pulse pillow for Traditional Chinese Medicine pulse diagnosis, and relates to the technical field of recorder pulse pillows. The steerable and adjustable recorder pulse pillow for Traditional Chinese Medicine pulse diagnosis comprises a main body, wherein a platform is installed right above the main body. The top surface of the platform is installed with a recording device. The bottom of the recording device is provided with a rotary disc. The rear end surface of the recording device is provided with an operating button. The rotary disc is fixedly connected with a micro-motor driving wheel inside the recording device. The micro-motor is electrically connected with a rotary knob of the recording device.

Abstract: Disclosed in the present disclosure is a folding tent with caster structures. The folding tent includes tent leg tubes, where a movable base is assembled at the bottom of each of the tent leg tubes; and each of the movable bases includes a leg tube seat, a roller base, and a roller, the roller is mounted on one side of the roller base, the leg tube seat is mounted on the roller base, and the roller base is rotatable relative to the leg tube seat and is configured to move the roller. According to the present disclosure, by means of the movable bases, the folding tent can be conveniently moved, carried or fixed.

Abstract: A method for quantifying and assessing a scheduling risk considering source load fluctuation and rescheduling, and an apparatus for quantifying and assessing a scheduling risk considering source load fluctuation and rescheduling are provided. The method includes establishing a scene set considering a new energy disturbance; establishing and solving a rescheduling optimization model considering the new energy disturbance in each scene based on a preset scheduling plan according to the scene set, so as to obtain a solving result of the rescheduling optimization model; and calculating a risk quantifying and assessing result corresponding to the preset scheduling plan according to the solving result of the rescheduling optimization model.

Abstract: Provided are a fan casing and a blower assembly, relating to the field of fan technology. The fan casing includes a mounting shell body, a heat dissipation member, a rear cover, and an elastic sealing ring. One side of the mounting shell body has an assembly opening. Another side of the mounting shell body has a mounting opening for holding a stator-rotor assembly. The heat dissipation member is at least partially disposed inside the mounting shell body and connected to the mounting shell body. The rear cover is disposed at the assembly opening and provided with a radially extending first reinforcing rib. The elastic sealing ring is disposed at the edge of the rear cover. The elastic sealing ring seals a gap between the mounting shell body and the rear cover and seals a gap between the heat dissipation member and the rear cover.

Abstract: A positioning system and method. The positioning system includes a positioning base station including a positioning module, n data transceiving modules, each of which include at least one positioning signal transceiving area and a parsing module; the positioning module is configured to perform information interaction with a terminal device through the positioning signal transceiving area, so as to generate a sending feature and a receiving feature; and the parsing module is configured to receive the sending feature and the receiving feature as well as a corresponding positioning module identifier and a corresponding terminal device identifier; determine at least one transmission feature quantity according to the sending feature and the receiving feature as well as the corresponding positioning module identifier and the corresponding terminal device identifier; and determine a first spatial coordinate of the terminal device according to each transmission feature quantity and each positioning module identifier.

Abstract: Provided are a fan casing, a blower assembly, and a vehicle air conditioning system, relating to the field of fan technology. The fan casing includes a mounting shell, a heat dissipation member, and a damping assembly. The mounting shell is provided with multiple limiting grooves and a mounting space for holding a stator-rotor assembly. The heat dissipation member includes a heat dissipation plate located inside the mounting shell. The multiple securing portions are disposed at the edge of the heat dissipation plate. The damping assembly includes multiple damping members. The multiple damping members are spaced apart along a first direction. The damping member is disposed in a corresponding limiting groove, and a pocket groove is disposed at the end of the damping member facing the central axis of the mounting shell. Each of the multiple securing portions is limited in a corresponding pocket groove.

Abstract: Embodiments of the specification provide a product object publishing method and a system. The method includes: obtaining an image of a product object; sending the image to a server; receiving a plurality of types of product attribute information obtained by image recognition on the image of the product object performed by an image recognizer set; displaying the plurality of types of product attribute information for selection by a user; generating structured information of the product object according to selection of the product attribute information; and publishing the product object, wherein the publishing comprises publishing the image and the structured information of the product object. Accuracy and efficiency of product object publishing can be improved.

Abstract: A high-strength, highly transparent nano-glass-ceramic, a preparation method therefor, and a use thereof. The high-strength, highly transparent nano-glass-ceramic uses precursor minerals mainly comprising synthetic aluminum-rich feldspar-like ceramic glass material, ?-spodumene material, cordierite material, synthetic ?-dicalcium silicate material, and magnesium aluminum spinel material for the main body of a feldspar-like matrix glass having a stable structure. Ultrafine zirconia powder having a particle size of less than 10 nm is used as a nucleating agent and microcrack damping and pinning agent, to control the formation of nanocrystallites smaller than 100 nm in the glass body formed after melting. The volume percentage content of the nanocrystallites is 50%-95%, and the nanocrystallites together with the matrix glass form a high-strength, highly transparent nano-glass-ceramic having a uniform microstructure.

Abstract: The present invention discloses a division method and system for distributed renewable-energy electricity generation clusters, where the method includes: obtaining electric power consumption-absorption data of the electricity-generation clusters; extracting and analyzing the absorbed electricity quantities of the corresponding target single electricity generators or the consumed electricity quantities of the corresponding target energy consumption nodes; constructing and determining consumption-absorption matching groups for a plurality of electricity generator sets and energy consumption districts according to distances from the target single electricity generators to the target energy consumption nodes, and executing division for the electricity-generation clusters. According to the present invention, energy waste can be avoided, and then management efficiency is increased.

Abstract: An audio encoding method and apparatus and an audio decoding method and apparatus are disclosed. During encoding of an audio channel signal of a current frame, whether a first target virtual loudspeaker and a second target virtual loudspeaker corresponding to an audio channel signal of a previous frame of the current frame meet a specified condition is first determined. When the first target virtual loudspeaker and the second target virtual loudspeaker meet the specified condition, a first encoding parameter of the audio channel signal of the current frame is determined based on a second encoding parameter of the audio channel signal of the previous frame, so that the audio channel signal of the current frame is encoded based on the first encoding parameter to obtain an encoding result, and the encoding result is written into a bitstream.

Abstract: Disclosed is a cirrus image generation method that solves the problem that remote sensing image dehazing datasets are not real and the number of cirrus image features is limited. The present disclosure includes: Obtaining real cirrus images, preprocessing; using a forward process diffusion, constructing a Markov chain, and adding random noise gradually to the cirrus image of the cirrus image dataset. A training dataset is constructed according to the pure noise image and the corresponding real noise. Taking the pure noise image as the input and the corresponding noise as the output, a noise prediction model is established, and the training dataset is used for training, by inputting the randomly generated noise image into the trained noise prediction model, and combining the predicted noise with posterior probability to perform reverse denoising on the image. After a set number of denoising steps, a cirrus image is obtained with real cirrus features.

Abstract: Discloses method for predicting multiple acoustic scattering characteristics of underwater vehicle, including: constructing geometric model of underwater vehicle for subsequent acoustic simulation and computation; subdividing mesh model of underwater vehicle, specifically, performing mesh subdivision based on geometric model to divide underwater vehicle model into smaller units for numerical computation; accelerating physical acoustics simulation process with iterative algorithm; performing computation on scattered acoustic fields of different levels to acquire accurate simulation result for multiple scattering phenomenon of underwater vehicle; performing analysis to acquire acoustic characteristics of underwater vehicle in underwater environment, including time-domain echo and target strength of multiple acoustic scattering of underwater vehicle.

Abstract: A shoe has a heel counter with heel cup. The heel cup has an upper portion with a top edge having medial elevated point and a lateral elevated point separated by a recessed point along a median line of the heel cup. The heel cup has a tapering thickness in a medial crest region and lateral crest region different from a thickness the trough region, providing differential flexibility. The shoe may have a tensioning system, wherein the tensioning system has a first tensioning system and a second tensioning system, and the first tensioning system is adjustable, and the second tensioning system is fixed. The second tensioning system may be located further from a shoe opening than the first tensioning system, and the first tensioning system is adjusted to a tension sufficient to allow a foot entry into the shoe without use of hands.

Abstract: Embodiments of this application disclose a three-dimensional audio signal processing method and apparatus, to implement bit allocation of a signal. The method includes: performing spatial coding on a to-be-coded three-dimensional audio signal, to obtain a transmission channel signal and transmission channel attribute information, where the transmission channel signal includes at least one virtual speaker signal group and at least one residual signal group; and determining a bit allocation ratio of the virtual speaker signal group and a bit allocation ratio of the residual signal group based on the transmission channel attribute information.

Abstract: This application discloses a three-dimensional audio signal coding method and apparatus, and an encoder, and relates to the multimedia field. The method includes: After determining a first quantity of virtual speakers and a first quantity of vote values based on a current frame of a three-dimensional audio signal, a candidate virtual speaker set, and a voting round quantity, the encoder selects a second quantity of representative virtual speakers for the current frame from the first quantity of virtual speakers based on the first quantity of vote values, and further encodes the current frame based on the second quantity of representative virtual speakers for the current frame to obtain a bitstream. This achieves efficient data compression.