Abstract: A track fusion method for an unmanned surface vehicle includes: (a) obtaining perception information of the unmanned surface vehicle, where the perception information includes GPS data information and radar data information; (b) pre-processing the radar data information to obtain target radar information; (c) constructing a track correlation model; and performing track correlation between the GPS data information and the target radar information based on the track correlation model; and (d) constructing a fusion data weight allocation model; and subjecting between the GPS data information and the target radar information correlated therewith to track fusion based on the fusion data weight allocation model. This application further provides a track fusion device for unmanned surface vehicles.

Abstract: A cleaning robot includes a dust suction assembly including a roller brush assembly, a cavity body, a first blocking member located on a front side and a second blocking member located on a rear side of the roller brush assembly. The roller brush assembly includes a first roller brush and a second roller brush that are longitudinally arranged. Each of the first blocking member and the second blocking member has a free end close to a bottom surface of the dust suction assembly; a distance between the free end of the first blocking member and the bottom surface is a first distance, and a distance between the free end of the second blocking member and the bottom surface is a second distance, both the first distance and the second distance is greater than or equal to 0 and less than 5 mm.

Abstract: A memory system includes: a memory device and a memory controller coupled with the memory device, wherein the memory device includes a plurality of first subregions storing mapping data; the memory controller is coupled with a host; the host includes a plurality of second subregions corresponding to the plurality of first subregions; the mapping data includes a logical address to physical address mapping relationship; logical address ranges of mapping data stored in a first subregion and a second subregion corresponding to each other are the same; the memory controller is configured to: divide the first subregion into a plurality of data units; when mapping data in a data unit is changed, label the data unit; and based on the number of the labeled data units in the first subregion, determine whether to trigger an update of mapping data in the second subregion corresponding to the first subregion.

Abstract: The polymerizable composition for optical materials of the present invention includes a polyester polyol (a), a compound (b) of which light absorption characteristics vary by sensing changes in environment; and a polymerization reactive compound (c).

Abstract: An energy generation device Including: a surface for supporting movement of a work material, and an energy converter. The surface is operable to induce movement of the work material relative to the surface. The energy converter is arranged to generate electrical energy based on the induced movement of the work material relative to the surface.

Abstract: The present application describes memory systems, hosts, electronic devices and operation methods, and computer-readable storage media. An example memory system includes: a memory device; a multi-mode circuit having data computing and processing capabilities and configured to: provide a main functional service when in a busy state, and provide an additional functional service when in an idle state, the main functional service including implementation of normal access operations to data stored in the memory device, the additional functional service including implementation of computing services other than the normal access operations to the data stored in the memory device; and a processor coupled to the memory device and the multi-mode circuit and configured to control the memory device and the multi-mode circuit.

Abstract: A multi-purpose mobile power supply includes a first discharge interface configured for powering a computer, communication and consumer electronic product; a second discharge interface configured for powering an electric tool; and an assembly of the mobile power supply and the electric tool. The electric tool includes: an motor; a mounting portion configured for a freely assembling and disassembling connection with the multi-purpose mobile power supply; a power supply terminal provided on the mounting portion and electrically connected to the motor, where the power supply terminal is configured for being combined with the second discharge interface; a latch arranged on the mounting portion, where the multi-purpose mobile power supply is provided with a latch groove corresponding to the latch, and the latch is fitted in the latch groove in a latching connection.

Abstract: The present disclosure provides a method for operating a memory system. The method includes providing a logical block management table, wherein the logical block management table includes a first sequence corresponding to identities of M first logical blocks, the identities of the M first logical blocks are constructed as a ring queue, and allocation states of the M first logical blocks are managed through the logical block management table. The method may include allocating, according to an order of the identities of the M first logical blocks in the ring queue, one first logical block whose allocation state is a first state representing an unallocated state to one second logical block among N second logical blocks. The method may include updating the allocation state of the first logical block in the logical block management table from the first state to a second state representing an allocated state.

Abstract: The present disclosure relates to an electric drive axle, including a driving assembly, a power coupling gear, a first gear transmission assembly, a second gear transmission assembly and two half shafts connected by a differential, the driving assembly is used to drive the differential. In the above way, the electric drive axle and the electric vehicle realize 3 shifting speeds, and can timely engage in different speeds according to the vehicle load, road conditions, transportation time requirements, etc., so as to realize the efficient operation of the vehicle, improve the operation efficiency, reduce energy consumption, meet the power demand of commercial vehicles with diverse loads and working conditions, and obtain high transportation efficiency and economic benefits.

Abstract: Methods and systems for generating artificial parcel data are provided. An example method involves accessing geospatial imagery depicting one or more buildings and surrounding areas, applying a machine learning model to the geospatial imagery to generate artificial parcel data in a form of a distance-transform raster map that represents a legal land parcel for each of the one or more buildings, and converting the distance-transform raster map into a vector map containing one or more polygons that represent the boundaries of each of the legal land parcels.

Abstract: Example systems and methods for data augmentation for occlusion handling in feature extraction are provided. An example method involves accessing a geospatial image depicting an occludable landcover feature; augmenting the geospatial image with a simulated occluding landcover feature to generate an occluding feature-augmented geospatial image, wherein the simulated occluding landcover feature partially occludes the occludable landcover feature as depicted in the geospatial image; and training a machine learning model, using the occluding feature-augmented geospatial image, to extract geometric representations of occludable landcover features as depicted in geospatial imagery.

Abstract: The present invention provides a medical device including a delivery mechanism and an implant, wherein the delivery mechanism includes a delivery component and an assistive component that is connected to the delivery component and configured to be expanded or shrunk in a radial direction of the delivery component, and the implant is detachably connected to the delivery component; the delivery mechanism is configured to deliver the implant to a predetermined position in a target lumen and release the implant, and the assistive component is radially expanded during the release of the implant so as to release the implant with a predetermined form in the predetermined position. The advantage of the medical device is that the implant is positioned with a predetermined form in the target lumen, improving the efficiency for thrombus interception and facilitating subsequent retrieval.

Abstract: The present disclosure discloses an electric drive axle, comprising a driving assembly, a power coupling gear, a first gear transmission assembly, a second gear transmission assembly and two half shafts connected by a differential, the driving assembly is used to drive the differential. In the above way, the electric drive axle and the electric vehicle provided according to the present disclosure realize 3 shifting speeds, and can timely engage in different speeds according to the vehicle load, road conditions, transportation time requirements, etc., so as to realize the efficient operation of the vehicle, improve the operation efficiency, reduce energy consumption, meet the power demand of commercial vehicles with diverse loads and working conditions, and obtain high transportation efficiency and economic benefits.

Abstract: A UV/O3/H2O2 advanced oxidation reactor includes a water inlet pipe, a water outlet pipe, an ultraviolet reactor, an H2O2 adding device and an O3 adding device. The ultraviolet reactor has a plurality of ultraviolet lamps embedded therein, and the ultraviolet lamps are arranged at an angle with respect to partition plates. The water inlet pipe is connected to a water inlet in a lower portion of the ultraviolet reactor, and the water outlet pipe is connected to a water outlet in an upper portion of the ultraviolet reactor. The H2O2 adding device and the O3 adding device are arranged on a connecting pipe of the water inlet pipe. After raw water is pressurized, H2O2 is added into the raw water through the H2O2 adding device, then ozone is added in the raw water through a water injector, and finally the raw water enters the ultraviolet reactor.

Abstract: Disclosed herein are a production apparatus of a motor laminated core and a method for producing the same, the production apparatus comprises an upper die assembly, a lower die assembly and an adhesive spraying device, the adhesive spraying device comprises an adhesive spraying plate, a first die plate and a second die plate successively from top to bottom, and channels are disposed between the plates, and respective channels communicate with first adhesive spraying openings and second adhesive spraying openings so as to coat an adhesive on a portion of a metal strip used for forming an core sheet, and after the core sheet is formed, a plurality of core sheets are cured and bonded at normal temperature in the production apparatus with the aid of a hydraulic cylinder so as to form a motor laminated core.

Abstract: A training mechanism for water-based lower-limb rehabilitation, including two leg training sub-mechanisms. Each leg training sub-mechanism includes a hip joint training device, an adjustable thigh plate, an adjustable shank plate, a knee training device, an ankle training device and a pedal. The hip joint training device, knee training device and ankle training device are connected to a remote control motor box through a Bowden cable assembly, respectively. A robot including the training mechanism is also provided, whose power source is arranged outside the water, and the power is supplied to the training mechanism through the Bowden cable assembly.

Abstract: A preparation method and an application of a scallop shell extract efficient adsorbent are provided. The adsorbent employs waste scallop shells as a primary raw material, and converts the scallop shells into an extract with excellent adsorption performance by heating and multiple times of extraction with acetic acid. The prepared scallop shell extract is used as an efficient adsorbent to be applied to adsorption of aqueous solution dyes and shows good adsorption performance. The preparation method has a simple preparation process, realizes high-value utilization of the waste scallop shells, effectively lightens the environmental burden, reduces shell pollution and waste, has low cost and high renewable efficiency, and has good ecological benefit and economic value.

Abstract: Methods and systems for generating artificial parcel data are provided. An example method involves accessing geospatial imagery depicting one or more buildings and surrounding areas, applying a machine learning model to the geospatial imagery to generate artificial parcel data in a form of a distance-transform raster map that represents a legal land parcel for each of the one or more buildings, and converting the distance-transform raster map into a vector map containing one or more polygons that represent the boundaries of each of the legal land parcels.

Abstract: A street lamp intelligent measurement and control device includes an MCU chip, and an electrical parameter measuring circuit, an NB-IoT communication circuit, a dimming circuit and a switching control circuit respectively connected to the MCU chip. The electrical parameter measuring circuit determines electrical parameter data and electrical energy data of a street lamp load, and transmits the electrical parameter data and the electrical energy data to the MCU chip. The MCU chip actively uploads the electrical parameter data and/or the electrical energy data to a remote control center according to a preset time interval, receives a controlling instruction from the remote control center, and sends out a switching signal and/or a dimming signal according to the controlling instruction. The switching control circuit controls an on-off of the street lamp load according to the switching signal sent by the MCU chip.