Abstract: An access method and apparatus, and a communication system is provided One example method includes: sending resource configuration information, where the resource configuration information configures a first time-frequency resource used for access of a plurality of terminals; and receiving access information from at least one of the plurality of terminals on the first time-frequency resource, where the access information of the terminal includes at least one of first identity information or status information of the terminal, the first identity information identifies the terminal, and the status information indicates a status of the terminal.

Abstract: This disclosure relates to a communication method and an apparatus, applied to an internet of vehicles, for example, V2X, LTE-V, and V2V. An in-vehicle apparatus triggers an on-board function for a first vehicle. The first vehicle carries the in-vehicle apparatus. The in-vehicle apparatus checks whether the first vehicle is allowed to use the on-board function on a first road. When the first vehicle is on the first road, the in-vehicle apparatus enables or disables the on-board function based on a check result. In the embodiments of this disclosure, whether to enable a corresponding on-board function may be controlled, so that the on-board function is enabled without depending on a human requirement. In this way, the corresponding on-board function may be controlled to be applied to an appropriate road, to reduce a vehicle accident risk, and a danger to social security.

Abstract: A method for indicating, obtaining, and sending automated driving information includes: starting, by a first vehicle, an automated driving function application, or receiving, by a first vehicle, an instruction used to instruct the first vehicle to start an automated driving function application; and indicating, by the first vehicle by using first indication information, that a driving status of the first vehicle is an automated driving state. A vehicle having an automated driving function sends the automated driving information to a surrounding traffic participant, especially to a surrounding vehicle or a pedestrian, so that the surrounding traffic participant identifies the automated driving vehicle, to improve traffic safety of an entire road.

Abstract: A method for growing long-seed DKDP crystal by two-dimensional motion grows the crystal along the cylindrical surface, and there is no cylinder-cone interface with low optical quality, while avoiding three flow regions which are inevitable in the crystal growth process by rotating crystal method, including incident flow, side flow and wake flow, and easily cause inclusion formation. The long seed crystal moves periodically in the fresh solution, four cylindrical surfaces can achieve reversible shear flow in one cycle, and any point on the cylindrical surface experiences the same hydrodynamic conditions in one movement cycle, so that the solute supply is sufficient and uniform, the growth velocity is improved, and the stability of morphology is ensured. The method facilitates rapid growth of high quality DKDP crystals and provides a better solution for the large-size, high-quality DKDP crystal growth required by the ICF laser device.

Abstract: A method includes determining an operational design domain (ODD) of a target road section where an automated driving system is located, where a first parameter set corresponding to the ODD includes a first environmental parameter set or a first operating parameter set of the automated driving system, obtaining a second parameter set, where the second parameter set includes a second environmental parameter set or a second operating parameter set, the second environmental parameter set is a set of environmental parameters of the automated driving system on the target road section, and the second operating parameter set is a set of operating parameters of the automated driving system on the target road section, and when it is identified that the second parameter set is a subset of the first parameter set, determining that the automated driving system does not exceed the ODD of the target road section.

Abstract: A rod-spring structured clamping and loosening device for a downhole belt replacement apparatus includes an upper and a lower cylinder fixed seat. The upper and the lower cylinder fixed seat are respectively connected to a first and a second set of pull rods, and each set of the pull rods pass through a first transition plate, a second transition plate, and a third transition plate. A first chuck is mounted on a side of the first transition plate facing the upper cylinder fixed seat, a second chuck is mounted on a side of the third transition plate facing the lower cylinder fixed seat, and the first and the second set of the pull rods are fixed at the first and the second chuck. A disc spring is mounted between the first and the second transition plate, and a jack is mounted between the second and the third transition plate.

Abstract: Embodiments of this disclosure provide a connection configuration method and apparatus, and relate to the field of communication technologies. The method includes: obtaining device information of at least one second device; and generating topology information based on the device information of the at least one second device, where the topology information indicates a connection relationship between a first device and the at least one second device or a connection relationship between the at least one second device, and the connection relationship indicates a priority of a device and/or a master-slave relationship between devices. In this way, efficiency and convenience of connection configuration of a plurality of short-distance devices can be improved.

Abstract: Disclosed herein a process for preparing a cathode active material of Formula (I) LiNixCoyMnzO2, including steps of: i) preparing a precursor of hydroxides or carbonates of Ni, Co and Mn; ii) mixing the precursor obtained from step i) with a source of Li; and iii) calcining the mixture obtained from step ii), where step iii) includes multi-step calcination, where x is in a range of from 0.80 to 0.95 and preferably from 0.80 to 0.92, y is in a range of from 0.01 to 0.15 and preferably from 0.01 to 0.12, and z is in a range of from 0.01 to 0.15 and preferably from 0.01 to 0.12, and the sum of x, y and z is 1.

Abstract: Provided are a spacer for a battery cell, a battery cell, a battery pack, and a vehicle. The spacer includes a spacer body having an accommodation groove. The accommodation groove has a gap formed at a bottom wall of the accommodation groove. The gap is in communication with the accommodation groove. The gap is adapted for a tab of the battery cell to pass through the gap to enable the tab to be partially accommodated in the accommodation groove. The spacer body has a width D, and the gap has a width d, where 3*d?2*D.

Abstract: A composite cell and a battery containing the composite cell are provided. The composite cell includes positive electrode sheets each satisfying a condition that a ratio of its capacity per unit area to a capacity per unit area of any other positive electrode sheet is 0.9 to 1.1. The positive electrode sheets include first positive electrode sheets, and positive electrode active materials contained in the first positive electrode sheet include a first positive electrode active material and a second positive electrode active material. An energy density of the first positive electrode active material is greater than that of the second positive electrode active material. On each of the first positive electrode sheets, 10 ? % ? m ? 1 m ? 0 ? 50 ? % , an average single-side surface density of the positive active coating layer is 50 to 650 g/m2, and a specific surface resistance of the first positive electrode sheet is 0.0001 to 0.1500 ?/mm2·g.

Abstract: A method for indicating, obtaining, and sending automated driving information includes: starting, by a first vehicle, an automated driving function application, or receiving, by a first vehicle, an instruction used to instruct the first vehicle to start an automated driving function application; and indicating, by the first vehicle by using first indication information, that a driving status of the first vehicle is an automated driving state. A vehicle having an automated driving function sends the automated driving information to a surrounding traffic participant, especially to a surrounding vehicle or a pedestrian, so that the surrounding traffic participant identifies the automated driving vehicle, to improve traffic safety of an entire road.

Abstract: A buck-boost switching power circuit comprises a bypass control circuit which configured to determine whether the buck-boost switching power circuit operates in a bypass mode according to a bypass enable signal. When the conversion voltage difference between the input voltage and the output voltage is less than a reference voltage, the bypass control circuit controls to electrically connect the input power source with the output power source, and operates the buck-boost switching power circuit in the bypass phase of the bypass mode. Before and/or after the bypass phase, the bypass control circuit respectively controls the buck-boost switching power circuit to operate in a first transition phase and/or a second transition phase.

Abstract: A method includes determining an operational design domain (ODD) of a target road section where an automated driving system is located, where a first parameter set corresponding to the ODD includes a first environmental parameter set or a first operating parameter set of the automated driving system, obtaining a second parameter set, where the second parameter set includes a second environmental parameter set or a second operating parameter set, the second environmental parameter set is a set of environmental parameters of the automated driving system on the target road section, and the second operating parameter set is a set of operating parameters of the automated driving system on the target road section, and when it is identified that the second parameter set is a subset of the first parameter set, determining that the automated driving system does not exceed the ODD of the target road section.

Abstract: This application provides a prompt method for fitness training and an electronic device, and relates to the field of artificial intelligence. The method includes: obtaining required training space, where the required training space is used to complete one or more training actions; determining, based on a training scenario in which a user is located and the required training space, a training location recommended to the user; and recording a training action of the user based on the training location recommended to the user. A suitable training location is recommended to the user based on the training scenario in which the user is located and the required training space. Therefore, the user can also normally perform training in a scenario in which exercise space is limited, for example, when there is an obstruction or a site is insufficient.

Abstract: A data sending method includes an adaptation layer that obtains first data and attribute information corresponding to the first data from a network layer, where the attribute information includes destination address information, the adaptation layer generates a first access layer address based on the destination address information, the adaptation layer transfers the first data and the first access layer address to an access layer, and the access layer sends the first data through a sidelink based on the first access layer address.

Abstract: A drive assist apparatus includes a storage unit that stores a three-dimensional model indicating a moving region, an input unit that receives, from a sensor group installed in the moving region, first height information indicating a first height which is a height of the mobile object and second height information indicating a second height which is a height of an object that satisfies a predetermined distance criterion from the mobile object, an extraction unit that extracts, from the three-dimensional model, a first plan view based on the first height information and a second plan view based on the second height information, a generation unit that generates a combined map for two-dimensionally showing the moving region and assisting the driving of the mobile object by combining the first plan view and the second plan view, and an output unit that transmits a generated combined map to the mobile object.

Abstract: The invention provides a method and system for screening high developmental potential embryo for in-vitro fertilization. The method includes segmenting an embryo from an acquired multi-focus embryo image; segmenting a TE image from the multi-focus embryo image after embryo segmentation, and unfolding the segmented TE image; inputting the multi-focus embryo image after segmentation, the TE image unfolded after the segmentation, the biochemical features of the patient couple and the status features of the maternal uterus into a trained prediction model, and outputting an embryo developmental potential score; and selecting the embryo with the highest score as the high developmental potential embryo.

Abstract: A multi-wavelength mid-infrared laser pulse train cavity dumped laser based on Nd:MgO:APLN crystal is disclosed. In response to the needs in the field of differential absorption lidar, it is necessary to introduce multi-fundamental frequency light pulse accumulation and superposition, and parametric light synchronization pulse compression technology in the multi-wavelength mid-infrared laser operating mechanism. To this end, a splayed parametric light oscillation cavity formed in conjunction with a Nd:MgO:APLN crystal is disclosed, wherein it is possible to obtain multi-wavelength mid-infrared laser pulse train output with narrow pulse width and high peak power, meeting the needs of differential absorption lidar for mid-infrared lasers.

Abstract: A multi-wavelength mid-infrared laser pulse train cavity dumped laser based on Nd:MgO:APLN crystal is disclosed. In response to the needs in the field of differential absorption lidar, it is necessary to introduce multi-fundamental frequency light pulse accumulation and superposition, and parametric light synchronization pulse compression technology in the multi-wavelength mid-infrared laser operating mechanism. To this end, a splayed parametric light oscillation cavity formed in conjunction with a Nd:MgO:APLN crystal is disclosed, wherein it is possible to obtain multi-wavelength mid-infrared laser pulse train output with narrow pulse width and high peak power, meeting the needs of differential absorption lidar for mid-infrared lasers.

Abstract: An intelligent voice playing method includes displaying, by an electronic device, an interface of a first application, where the first application is used by a user to perform exercise training; capturing an image of a training action of the user; playing a video of a standard action, and displaying the image of the training action of the user; determining a plurality of to-be-selected voices triggered by a first action unit in the training action of the user, where the first action unit is one training action or a part of one training action; and selecting a voice from the to-be-selected voices for playing.